Vehicle high-voltage battery unit assembly

Specific implementation

Embodiments. However, it is to be understood, that the disclosed embodiments are merely examples and other embodiments may take various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details. Thus, specific structural details and functional details disclosed herein are not to be construed as limiting, but merely as teaching the representative basis. It will be understood by those skilled in the art, various features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to produce embodiments that are not explicitly illustrated or described herein. The combinations of features illustrated provide representative embodiments for typical applications. However, for specific applications or implementations, various combinations and modifications of features consistent with the teachings of the present disclosure may be desirable.

1 Illustrates an example, of a battery cell assembly. Herein is generally referred to as a battery cell assembly 100. The battery cell assembly 100 includes a battery unit case 104 and a case cover 106. The battery cell housing 104 defines a cavity sized to receive a battery cell. The housing cover 106 defines first apertures 112 and second apertures 114. The battery cells include means for generating energy and first terminals 116 and second terminals 118 for transferring energy from the components of the components. The housing cover 106 is mounted to the battery unit case 1 04 时, for example. The first Apertures 112 and second aperture 114 are each sized such that one of first terminal 116 or second terminal 118 extends therethrough.

The battery cell case 104 includes an inner wall defining a cavity for receiving the battery unit 108 and an outer wall spaced apart from the inner wall 120. The support layer 128 is disposed between the inner wall and the outer wall. The support layer is structured to aid in mitigating impact energy absorption, including one or more neutralizing agents to release upon failure of the battery cell and reducing the weight of the battery cell housing compared to previous designs, for example. 128 104In one example, support layer 128 may include a plurality of separate support chambers as further described herein.

2 Illustrates another example, of a battery cell assembly. The battery cell assembly 101 is generally referred to as a battery cell module. The battery cell assembly 101 includes a structured frame, referred to herein as a battery cell housing 105, for. The battery cell housing 105 defines a cavity sized to receive the battery cell 109. The battery cell 109 includes means for generating energy and first terminals 117 and second terminals 119 for transferring energy from the components of the components. The battery cell housing 105 defines first apertures and second apertures for extending the terminal therethrough. The first Pores and second pores are each sized such that one of first terminal 117 or second terminal 119 extends therethrough.

Battery cell case 105 includes an outer wall 109 defining an inner wall 121 and for receiving a cavity of battery cell 121 and an inner wall 123 spaced apart. Each of the inner wall 121 and the outer wall 123 may contain a flexible material to facilitate managing the impact load to help protect the battery unit 109. It is contemplated, that the inner wall 121 may contain a material having a different nature from the material of the outer wall 123. For example, the material of the inner wall 121 may be desired to have rigid properties and the material of the outer wall 123 is desired to have flexible properties. In another example, the material of the inner wall 121 may be expected to have a lower melting point than the material of the outer wall 123.

The support layer 127 is disposed between the inner wall 121 and the outer wall 123. The support layer is structured to aid in mitigating impact energy absorption, including one or more neutralizing agents to release upon failure of the battery cell and reducing the weight of the battery cell housing compared to previous designs, for example. 127 105In one example, the support layer 127 may include a plurality of separate support chambers.

3 Is a cross-sectional view of a portion of a battery cell housing, for example. It shows an example, such as a support layer of the battery cell case 129 or the battery cell case 104 identified as the region 105, for the structure of the support layer. An area 129 represented by a broken line is shown as an example. 1 and 2 as an example of the position of the support layer. In FIG. 3, the support layer 127 includes a plurality of hexagonally shaped support chambers, which are arranged to define a honeycomb structure with respect to each other. Each of the support chambers includes a diaphragm having a plurality of side faces, and a diaphragm, the diaphragm having a plurality of sides. An angle is defined between two adjacent sides. In one example where the plurality of sides contain a rigid or flexible material, each of the angles may be less than ninety degrees or greater than ninety degrees to facilitate transfer of the impact load path received from the outer wall 123, as further described below. In another example where the plurality of sides contain a flexible material, each of the angles may be approximately ninety degrees. Of the angle between the plurality of sides may be based on a thickness.

4 Shows an example, in which one of the support chambers is supported. The support chamber 140 is referred to as a support chamber. In the example, the support chamber 140 includes eight side faces 142 that define the diaphragm. Each of the sides 142 is connected to the other two sides 142, defining an angle 142 between the two adjacent sides 148. In this example, each of the angles 148 are approximately 135°. Each support chamber 140 may have a variety of shapes, with an angle between adjacent sides 90° that is substantially unitally-@ or less. (e.g. less) 90° (e.g.). Triangle).

5A to 7B illustrate other examples of shapes of the battery cell case 104 and the battery cell case 105 supporting chamber. FIGS. FIGS 5A through 7B are shown as being similar to each other, it is contemplated, that the respective support layer may include a collection. The support chambers of various shapes may be organized based on the desired performance to selectively guide the load path from the impact on the battery cells. For example, the support chamber located near the inner wall 121 or the outer wall 123 may be larger or smaller than the support chamber located therebetween. In addition, each side of the respective support chamber may contain a flexible material to flex when impacted by the inner wall 121 or outer wall 123 to help mitigate the load path that is generated by the impacts. Further, the support chamber may be spaced from inner wall 121 and outer wall 123, as shown 6A, to provide clearance for inner wall 121 and/or outer wall 123 in receiving force for buckling.

5A and 5B, FIGS. The support layer 150 is shown disposed between the inner wall 121 and the outer wall 123. The support layer 150 includes a plurality of support chambers 140 defining an octagonal shape having eight sides. The neutralizing agent may be disposed within one or more of the support chambers 140 or between adjacent support chambers. The neutralizing agent may be used to help mitigate or eliminate the potential failure problem of the battery cells. For example, the neutralizing agent 154 represented by the hatched portion in FIG. 5A may be disposed within each of the support chambers 140. In another example, the neutralizing agent 156 represented by the hatched portion in FIG. 5B may be disposed between the support chambers 140.

Each of the neutralizing agents may be disposed between the respective support chambers 140 or adjacent support chambers 140, respectively. When pierced, the neutralizing agent is released to help alleviate or eliminate battery cell failure. As an example, the impact on the battery cells may result in one or more chemicals being released. The support chamber 140 may be arranged such that one or more of the sides of the support chamber 140 may release a neutralizing agent contained therein or therebetween as a result of impact-piercing. The neutralizing agent may contact one or more chemicals released from the battery cells, for example. Any damage.

6A and 6B, FIGS. The support layer 160 is shown disposed between the inner wall 121 and the outer wall 132. The support layer 160 includes a plurality of support chambers, each defining a twelve-sided polygon, such as a dodecagon. In this example, an angle of approximately nyl@ may be defined between two adjacent 150° edges. The neutralizing agent may be disposed within one or more of the plurality of support chambers or between adjacent support chambers. As described above, the neutralizing agent may be used to help mitigate the potential failure problem of the battery cells. For example, the neutralizing agent 164 represented by the hatched portion in FIG. 6A may be disposed within each of the support chambers of the support layer 160. In another example, the neutralizing agent 166 represented by the hatched portion in FIG. 5B may be disposed between the support chambers of the support layer 160.

7A and 7B, FIGS. The support layer 170 is shown disposed between the inner wall 121 and the outer wall 123. The support layer 170 includes a plurality of support chambers, each defining a six-sided polygon, such as a hexagon. In this example, an angle of approximately nyl@ may be defined between two adjacent 120° edges. The neutralizing agent may be disposed within one or more of the plurality of support chambers or between adjacent support chambers. As described above, the neutralizing agent may be used to help mitigate or eliminate potential failure issues of battery cells. For example, the neutralizing agent 174 represented by the hatched portion in FIG. 7A may be disposed within each of the support chambers of the support layer 170. In another example, the neutralizing agent 176 represented by the hatched portion in FIG. 7B may be disposed between the support chambers of the support layer 170.

The angular relationship between the side of the support chamber and the additional apexes may also help manage the load received from the impact force to the battery units. to illustrate examples of load path transfer due to the structure of the support chamber of the support layer. 8A 8C 150In FIG. 8A, the force indicated by the force arrow 180 is applied to the outer wall 122. This force may be related to the impact on the battery cell housing 104 or the battery cell housing 105. In FIG. 8B, the force arrow 186 represents the load path generated by the force indicated by the force arrow 180, for example. This force is shown traveling. An angle defined between each of the sides of the support chamber is used to change a portion of the load path through the inclined side instead of directly toward the direction. An angle value less than ninety degrees and greater than ninety degrees helps to affect the load path so that it does not directly travel toward the battery cell. It is contemplated, based on the appropriate thickness of each of the sides, an angle value of about ninety degrees may be acceptable. In addition, the sides may be arranged to be spaced apart from each other such that a load path from a force applied to the outer wall is distributed over an area greater than the area at the point of application.

Each of the support chambers may also be structured to facilitate management of heat transfer through the battery cell housing 104 or the battery cell housing 105, respectively. As shown 9. In FIG. 9, the support layer 190 is shown disposed between the inner wall 121 and the outer wall 123. The thermal arrow 200 represents the heat source of the inner wall 121. For example, the thermal arrow may represent an increase in heat flow experienced by a portion (such as a hot spot from a battery cell) of the battery cell. 200The side of the support chamber of the support layer 190 may contain a material that helps manage heat represented by the thermal arrow 200. In another example, the phase change material may be disposed within one or more support chambers of the support layer 190. The phase change material may be selected based on a temperature dependent phase change property (such as a latent heat transition from solid state to liquid state when exposed to a temperature above a predetermined threshold).

The phase change material within the support chamber of the support layer 190 may begin to transition from the solid state upon exposure to heat represented by the thermal arrow 200. When the phase change material is transformed, heat may be absorbed such that heat is dispersed on the outer wall 123 in a more uniform and dispersed pattern, as represented by the thermal arrow 204.

While various exemplary embodiments have been described above, various exemplary embodiments are described. However, it is not intended that these embodiments describe all possible forms encompassed by the claims. The words used in the present specification are words, and are not limitative words, and it is to be understood, that various changes may be made without departing from the spirit and scope of the present disclosure. As previously described, features of various embodiments may be combined to form further embodiments of the present disclosure, which may not be explicitly described or illustrated. While various embodiments may have been described with respect to one or more desired features to provide advantages or to other embodiments or prior art implementations, various embodiments may be practiced. One of ordinary skill in the art would recognize, however, that one or more features or characteristics may be sacrificed to achieve the desired overall system properties, depending on the particular application and implementation. These properties may include, but are not limited to, cost, strength, durability, life cycle costs, market marketability, appearance, packaging, size, serviceability, weight, manufacturability, ease of assembly, and the like. Thus, embodiments described in terms of one or more characteristics to be less desirable than other embodiments or prior art implementations do not depart from the scope of the present disclosure and may be desirable for a particular application.

To the present invention, there is provided a traction battery unit assembly having: a battery unit; and a battery unit case for accommodating the battery unit and including an inner wall, an outer wall, and a diaphragm including a plurality of support chambers disposed between the inner wall and the outer wall, wherein each of the five or more side surfaces is disposed together with an adjacent side to define an angle greater than ninety degrees therebetween, and a battery cell case, and a battery unit case including a plurality of support chambers disposed between the inner wall and the outer wall.

To an embodiment, the present invention is further characterized by, in at least one of the support chambers, a neutralizing agent, wherein the support chamber is arranged within the layer such that one of the support chambers is pierced to release the neutralising agent.

To one embodiment, the invention is also characterized in, that a neutralizing agent arranged between three or more support chambers, wherein the support chamber is arranged within the layer such that the neutralising agent travels toward the impact on the inner wall . the support chamber is arranged in the layer.

To an embodiment, a phase change material is disposed between the five or more sides.

To one embodiment, the phase change material, based on a temperature dependent phase change property, is selected, and wherein the selected phase change material absorbs heat when exposed to a temperature above a predetermined threshold and turns from solid state to liquid.

To one embodiment, each of the five or more side surfaces contains a flexible material, and wherein the plurality of support chambers are arranged such that each of the five or more side faces of the respective support chamber is bent when the outer wall is subjected to an impact.

To one embodiment, the five or more sides are also arranged with respect to each other such that a load path from a force applied to the outer wall is distributed over the area of the area that is greater than the point of application.

The invention, according to the invention. A traction battery cell assembly having a battery cell; and a battery cell housing defining a cavity sized to receive the battery cell, and including an inner wall, an outer wall, and a polygonal, disposed between the inner wall and the outer wall, wherein the side faces are arranged to define a dose chamber for containing a neutralizing agent, and wherein the plurality of support chambers are arranged together with the inner wall and the outer wall, and a battery cell housing, and a plurality of support chambers. The impact on one of the walls results in piercing of one of the sides of the support chamber to release the neutralising agent.

To one embodiment, each of the support chambers includes five or more sides, and wherein adjacent sides define an angle therebetween that is greater than ninety degrees therebetween.

To one embodiment, each of the support cavities includes three sides to form a triangular shape.

To one embodiment, the plurality of side faces are further arranged so that the load path from the force applied to the outer wall is distributed over the area of the area which is greater than the point of the application point.

To an embodiment, a phase change material is disposed between the five or more sides.

To one embodiment, the phase change material, based on a temperature dependent phase change property, is selected, and wherein the selected phase change material absorbs heat when exposed to a temperature above a predetermined threshold and turns from solid state to liquid.

The invention, according to the invention. A traction battery cell assembly having an inner wall defining a cavity body for receiving a battery cell and defining an opening; an outer wall that is sized to close the opening and defines first and second apertures; first a terminal extending from the battery cell and extending through the first aperture; and second a terminal extending through the second aperture from the battery cell assembly, and a cap, that is sized to receive the battery cell assembly cavity; and a terminal, wherein the terminal extends through the aperture, and extends through the aperture. The support layer includes a plurality of support chambers, the plurality of support chambers being shaped to transfer a load path from a force applied to the inner wall or an outer wall through an inclined side of each of the plurality of support chambers.

To one embodiment, a neutralizing agent is disposed at one of the locations in each of the support chambers and between adjacent support chambers, wherein the neutralising agent is released when one or a corresponding support chamber in the outer wall is pierced.

To one embodiment, the support chamber includes a plurality of sides defining a diaphragm, and wherein the support chamber is further shaped such that adjacent sides of the plurality of sides form an angle of less than ninety degrees or an angle greater than ninety degrees.

To one embodiment, each of the inclined side surfaces contains a flexible material, and wherein the plurality of support chambers are arranged such that each of the inclined side surfaces of the respective support chamber is bent when the outer wall is subjected to an impact.

To one embodiment, the support chamber is spaced from the inner wall and the outer wall, providing a space for the inner wall and the outer wall to deflect.