Side plate of battery module, battery module, battery pack and vehicle

Abstract

The utility model discloses a kind of side plate of battery module, battery module, battery pack and vehicle, the side plate of battery module includes: side plate main body and phase change material, first phase change material containing cavity and second phase change material containing cavity are formed in side plate main body, second phase change material containing cavity is located at the outside of first phase change material containing cavity in the thickness direction of side plate main body, second phase change material containing cavity is communicated with first phase change material containing cavity, phase change material is set to first phase change material containing cavity and is adapted to phase change and flow to second phase change material containing cavity when temperature reaches preset condition. By the phase change material in first phase change material containing cavity and second phase change material containing cavity, when being subjected to higher temperature, phase change material flows in turn, so that the side plate of battery module can effectively manage the heat generated by battery, which is beneficial to balance the temperature between battery and cockpit, can prolong the life of battery, can reduce the charging time of vehicle, and can ensure the rapid charging of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a side plate of a battery module, a battery module, a battery pack, and a vehicle. Background Technology

[0002] Currently, the rapid development of new energy vehicles has placed higher demands on battery thermal management. The heat generated during the charging and discharging process is difficult to manage effectively. The uneven energy distribution between battery thermal management and the cabin temperature control system leads to low energy utilization efficiency, affecting battery life and vehicle range.

[0003] In related technologies, battery thermal management systems have liquid cooling plates installed at the bottom of the battery cells. When the vehicle is fast charging, high temperatures are generated, and the temperature of the battery cells will exceed the design range. The only way to reduce the temperature of the battery cells is to limit the charging current. This not only fails to effectively manage heat and affect the battery life, but also extends the charging time and driving range of the vehicle, thus failing to meet the fast-paced needs of users. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a side plate for a battery module that can effectively manage the heat generated by the battery, thereby extending battery life, reducing vehicle charging time, and ensuring the vehicle's driving range.

[0005] This utility model further proposes a battery module.

[0006] This utility model further proposes a battery pack.

[0007] This utility model further proposes a vehicle.

[0008] The side plate of the battery module according to this utility model includes: a side plate body and a phase change material. A first phase change material receiving cavity and a second phase change material receiving cavity are formed in the side plate body. The second phase change material receiving cavity is located outside the first phase change material receiving cavity in the thickness direction of the side plate body. The second phase change material receiving cavity is connected to the first phase change material receiving cavity. The phase change material is disposed in the first phase change material receiving cavity and is adapted to undergo phase change and flow to the second phase change material receiving cavity when the temperature reaches a preset condition.

[0009] According to the side panel of the battery module of this utility model, by setting a first phase change material receiving cavity and a second phase change material receiving cavity in the main body of the side panel, the first phase change material receiving cavity and the second phase change material receiving cavity can hold phase change material, and the first phase change material receiving cavity and the second phase change material receiving cavity are arranged sequentially in the thickness direction of the main body of the side panel. In this way, when the phase change material in the first phase change material receiving cavity and the second phase change material receiving cavity are subjected to high temperature, the phase change material flows sequentially. This allows the side panel of the battery module to effectively manage the heat generated by the battery, which is conducive to balancing the temperature between the battery and the cabin, extending the battery life, reducing the vehicle charging time, and ensuring the vehicle's driving range, thereby meeting the user's need for fast charging of the vehicle.

[0010] In some examples of this utility model, the side plate body includes: an outer plate, an inner plate and a middle plate, the middle plate is disposed between the outer plate and the inner plate, a first phase change material receiving cavity is formed between the middle plate and the inner plate, a second phase change material receiving cavity is formed between the middle plate and the outer plate, and the middle plate is provided with an intermediate flow channel that connects the second phase change material receiving cavity and the first phase change material receiving cavity.

[0011] In some examples of this utility model, the inner plate is formed with a first receiving groove that opens toward the middle plate, and the middle plate covers the opening of the first receiving groove to form a first phase change material receiving cavity; and / or the outer plate is formed with a second receiving groove that opens toward the middle plate, and the middle plate covers the opening of the second receiving groove to form a second phase change material receiving cavity.

[0012] In some examples of this utility model, in the height direction of the side plate body, the bottom of the second phase change material receiving cavity is higher than the bottom of the first phase change material receiving cavity.

[0013] In some examples of this utility model, the intermediate flow channel is inclined, and one end of the intermediate flow channel connected to the second phase change material receiving cavity is higher than the other end connected to the first phase change material receiving cavity.

[0014] In some examples of this utility model, there are multiple intermediate channels, which are distributed in rows and / or columns on the intermediate plate.

[0015] In some examples of this utility model, a portion of a plurality of intermediate flow channels is connected between the top of the second phase change material receiving cavity and the top of the first phase change material receiving cavity, and another portion of the plurality of intermediate flow channels is connected between the bottom of the second phase change material receiving cavity and the bottom of the first phase change material receiving cavity.

[0016] In some examples of this utility model, a first flow guiding slope is formed at the top of the first phase change material receiving cavity, and the outer side of the first flow guiding slope is higher than its inner side; and / or a second flow guiding slope is formed at the bottom of the second phase change material receiving cavity, and the outer side of the second flow guiding slope is higher than its inner side.

[0017] In some examples of this utility model, the outer surface of the outer plate is provided with heat sinks, which are correspondingly located around the second phase change material receiving cavity.

[0018] In some examples of this utility model, there are multiple first phase change material receiving cavities and multiple second phase change material receiving cavities. The multiple first phase change material receiving cavities are spaced apart in the height direction of the side plate, and the multiple second phase change material receiving cavities are spaced apart in the height direction of the side plate. The multiple first phase change material receiving cavities and multiple second phase change material receiving cavities are connected in a one-to-one correspondence.

[0019] In some examples of this utility model, the volume of the phase change material is V1, the volume of the first phase change material receiving cavity is V2, and V1 and V2 satisfy the relationship: 1 / 4≤V1 / V2≤2 / 3.

[0020] In some examples of this utility model, the phase change material is a liquid-gas phase change material.

[0021] The battery module according to this utility model includes: a plurality of batteries and a side plate of the battery module as described above, wherein the plurality of batteries are disposed on the inner side of the side plate body.

[0022] In some examples of this utility model, a plurality of batteries are arranged sequentially along the length direction of the side plate, and the thickness direction of the batteries is the same as the length direction of the side plate.

[0023] The battery pack according to this utility model includes: the battery module described above.

[0024] The vehicle according to this utility model includes: the battery pack described above.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the battery module according to an embodiment of the present utility model; Figure 2This is a perspective view of the side panel of the battery module according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the side panel of the battery module according to an embodiment of the present utility model; Figure 4 This is an exploded view of the side panel of the battery module according to an embodiment of the present utility model.

[0027] Figure label: 1000, Battery Module; 100. Side panel of battery module; 10. Side plate main body; 11. First phase change material receiving cavity; 12. Second phase change material receiving cavity; 13. Outer plate; 131. Second receiving groove; 14. Inner plate; 141. First receiving groove; 15. Intermediate plate; 16. Intermediate flow channel; 17. Heat sink; 18. First flow guide slope; 19. Second flow guide slope; 200, battery; 300, end plate. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0029] The following is for reference. Figures 1-4 This invention describes a side panel 100 of a battery module according to an embodiment of the present invention, which is used in a vehicle, such as a new energy vehicle.

[0030] like Figures 1-4 As shown, the side plate 100 of the battery module according to this utility model includes: a side plate body 10 and a phase change material. A first phase change material receiving cavity 11 and a second phase change material receiving cavity 12 are formed in the side plate body 10. The second phase change material receiving cavity 12 is located outside the first phase change material receiving cavity 11 in the thickness direction of the side plate body 10. The second phase change material receiving cavity 12 is connected to the first phase change material receiving cavity 11. The phase change material is disposed in the first phase change material receiving cavity 11 and is adapted to undergo phase change and flow to the second phase change material receiving cavity 12 when the temperature reaches a preset condition.

[0031] It is understood that the side plate body 10 and the phase change material constitute the main body of the side plate 100 of the battery module. The side plate body 10 is provided with a first phase change material receiving cavity 11 and a second phase change material receiving cavity 12. The first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 are arranged at intervals along the thickness direction of the side plate body 10. The side plate body 10 is closer to the battery 200 on the inner side and farther away from the battery 200 on the outer side. The first phase change material receiving cavity 11 is located inside the second phase change material receiving cavity 12, that is, the first phase change material receiving cavity 11 is closer to the battery 200 than the second phase change material receiving cavity 12. The first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 are connected, so that the phase change material can carry heat and circulate in the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12.

[0032] The first phase change material receiving cavity 11 is equipped with a phase change material, which can change from one state to another. In this embodiment, the phase change material is a liquid-gas phase change material, which can absorb a large amount of heat while maintaining a constant temperature. The phase change material in the first phase change material receiving cavity 11 is close to the battery 200. When the heat generated by the battery 200 reaches a certain standard, that is, when the heat generated by the battery 200 reaches a preset value, the phase change material in the first phase change material receiving cavity 11 undergoes a phase change, changing from liquid to gas. The gas continues to flow to the second phase change material receiving cavity 12, which is far away from the battery 200. This allows the heat carried by the gas to be dissipated to a place far away from the battery 200. This allows the side plate 100 of the battery module to effectively manage the heat generated by the battery 200, which is beneficial to balancing the temperature between the battery 200 and the cabin, extending the life of the battery 200, reducing the vehicle's charging time, and ensuring the vehicle's range, thereby meeting the user's fast-paced charging needs.

[0033] Therefore, by providing a first phase change material receiving cavity 11 and a second phase change material receiving cavity 12 within the side panel body 10, the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 can hold phase change materials. Moreover, the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 are arranged sequentially in the thickness direction of the side panel body 10. This allows the phase change materials in the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 to flow sequentially when subjected to higher temperatures. This enables the side panel 100 of the battery module to effectively manage the heat generated by the battery 200, which is beneficial for balancing the temperature between the battery 200 and the cabin, extending the life of the battery 200, reducing the vehicle's charging time, and ensuring the vehicle's driving range, thereby meeting the user's need for fast charging of the vehicle.

[0034] Among them, such as Figures 2-4As shown, the side plate body 10 includes an outer plate 13, an inner plate 14, and a middle plate 15. The middle plate 15 is disposed between the outer plate 13 and the inner plate 14. A first phase change material receiving cavity 11 is formed between the middle plate 15 and the inner plate 14. A second phase change material receiving cavity 12 is formed between the middle plate 15 and the outer plate 13. The middle plate 15 is provided with an intermediate flow channel 16 that connects the second phase change material receiving cavity 12 and the first phase change material receiving cavity 11.

[0035] It is understood that the outer plate 13, inner plate 14, and intermediate plate 15 are sequentially spliced ​​together. The outer plate 13 is farther away from the battery 200 relative to the inner plate 14. The intermediate plate 15 is located between the inner plate 14 and the outer plate 13. A first phase change material receiving cavity 11 is formed between the inner plate 14 and the intermediate plate 15, and a second phase change material receiving cavity 12 is formed between the outer plate 13 and the intermediate plate 15. This allows the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 to be arranged at intervals along the thickness direction of the side plate body 10, thereby providing space for the phase change material. The phase change of the material provides a flow space. An intermediate flow channel 16 is provided on the intermediate plate 15. One end of the intermediate flow channel 16 is connected to the first phase change material receiving cavity 11, and the other end is connected to the second phase change material receiving cavity 12. In this way, the intermediate flow channel 16 can connect the second phase change material receiving cavity 12 with the first phase change material receiving cavity 11. When the temperature of the battery 200 reaches the preset temperature, the phase change material in the first phase change material receiving cavity 11 undergoes a liquid-gas phase change. The gas after the phase change transformation flows through the intermediate flow channel 16 to the second phase change material receiving cavity 12, thereby facilitating the transfer and dissipation of heat.

[0036] In addition, such as Figure 4 As shown, the inner plate 14 has a first receiving groove 141 that opens toward the middle plate 15. The middle plate 15 covers the opening of the first receiving groove 141, thereby forming a first phase change material receiving cavity 11. The outer plate 13 has a second receiving groove 131 that opens toward the middle plate 15. The middle plate 15 covers the opening of the second receiving groove 131, thereby forming a second phase change material receiving cavity 12.

[0037] In other words, a first receiving groove 141 is formed on the outer side of the inner plate 14, and the first receiving groove 141 forms an opening facing the middle plate 15. This facilitates the middle plate 15 to cover the first receiving groove 141, thereby forming a closed space. This space is the first phase change material receiving cavity 11, where liquid phase change material can be stored. It also prevents the liquid phase change material from leaking during vehicle movement. A second receiving groove 131 is formed on the inner side of the outer plate 13, and the second receiving groove 131 forms an opening facing the middle plate 15. This facilitates the middle plate 15 to cover the second receiving groove 131, thereby forming a closed space. This space is the second phase change material receiving cavity 12, where gaseous phase change material after phase change is stored. Heat is dissipated to the outside through the outer plate 13, thereby reducing the heat generated during battery charging. For example, the first receiving groove 141 and the second receiving groove 131 are formed by stamping or laser forming, which not only ensures structural strength but also facilitates subsequent installation and disassembly.

[0038] In particular, such as Figure 3 As shown, in the height direction of the side plate body 10, the bottom of the second phase change material receiving cavity 12 is higher than the bottom of the first phase change material receiving cavity 11. That is, the bottom of the second phase change material receiving cavity 12 is located above the bottom of the first phase change material receiving cavity 11. This allows the liquid phase change material to be converted into a gaseous phase change material. Since the gaseous phase change material has a lower density, it flows upward. The second phase change material receiving cavity 12 located above facilitates the collection of the gaseous phase change material, thereby ensuring that the heat carried by the gaseous phase change material is concentrated in the outer plate 13, which is beneficial to the dissipation of heat generated by the battery 200.

[0039] In addition, such as Figure 3 As shown, the intermediate flow channel 16 is inclined, and the end of the intermediate flow channel 16 connected to the second phase change material receiving cavity 12 is higher than the other end connected to the first phase change material receiving cavity 11.

[0040] It is understandable that the intermediate flow channel 16 is inclined along the thickness direction of the side plate body 10. The end of the intermediate flow channel 16 near the first phase change material receiving cavity 11 is located below the end near the second phase change material receiving cavity 12. The intermediate flow channel 16 is inclined upward from the inside to the outside. This not only allows the intermediate flow channel 16 to connect the second phase change material receiving cavity 12 with the first phase change material receiving cavity 11, but also allows the gaseous phase change material with lower density to flow obliquely upward to the second phase change material receiving cavity 12. When the battery 200 temperature reaches the preset temperature, the phase change material in the first phase change material receiving cavity 11 undergoes a liquid-gas phase change. The gas after the phase change transformation flows obliquely upward through the intermediate flow channel 16 to the second phase change material receiving cavity 12. Thus, the heat generated when the battery 200 is charging can be dissipated to the outside through the first phase change material receiving cavity 11, the intermediate flow channel 16 and the second phase change material receiving cavity 12 in sequence.

[0041] Optionally, such as Figures 2-4 As shown, there are multiple intermediate flow channels 16, which are distributed in rows and columns on the intermediate plate 15. This allows the gaseous phase change material to flow uniformly and quickly into the second phase change material receiving cavity 12, thereby ensuring that the heat generated during battery charging is dissipated quickly, thus meeting the requirements of the vehicle's long-term fast charging mode. For example, the multiple intermediate flow channels 16 can be circular, square, or other shapes.

[0042] Among them, such as Figure 3 As shown, a portion of a plurality of intermediate flow channels 16 is connected between the top of the second phase change material receiving cavity 12 and the top of the first phase change material receiving cavity 11, and another portion of a plurality of intermediate flow channels 16 is connected between the bottom of the second phase change material receiving cavity 12 and the bottom of the first phase change material receiving cavity 11.

[0043] In other words, multiple intermediate channels are arranged at intervals in the vertical direction. The upper intermediate channel is connected to the upper side of the first phase change material receiving cavity 11 at one end, and to the upper side of the second phase change material receiving cavity 12 at one end. This allows the upper intermediate channel to connect the upper side of the first phase change material receiving cavity 11 and the upper side of the second phase change material receiving cavity 12. The lower intermediate channel is connected to the lower side of the first phase change material receiving cavity 11 at one end, and to the lower side of the second phase change material receiving cavity 12 at one end. The lower side of the phase change material receiving cavity 12 is connected so that the middle channel located below can connect the lower side of the first phase change material receiving cavity 11 and the lower side of the second phase change material receiving cavity 12. This allows the phase change material in the first phase change material receiving cavity 11 to change from a liquid phase change material to a gaseous phase change material after reaching the preset temperature of the battery 200. Then, it flows to the second phase change material receiving cavity 12 through the middle channel located above and below. This ensures that all the gasified phase change material flows to the second phase change material receiving cavity 12 without affecting the phase change material in the first phase change material receiving cavity 11 to continue changing phase. It also ensures that the heat generated during the charging of the battery 200 is effectively dissipated to the outside.

[0044] In addition, such as Figure 3 As shown, a first flow guiding slope 18 is formed on the top of the first phase change material receiving cavity 11. The outer side of the first flow guiding slope 18 is higher than its inner side, that is, the first flow guiding slope 18 is provided on the upper side of the first phase change material receiving cavity 11. Along the thickness direction of the side plate body 10, the side of the first flow guiding slope 18 near the battery 200 is located below the side away from the battery 200. The inner side of the first flow guiding slope 18 is lower than the outer side, which can ensure that the inclination of the first flow guiding slope 18 is consistent with the inclination of the middle flow channel 16. When the temperature of the battery 200 reaches the preset temperature, The phase change material in the first phase change material receiving cavity 11 undergoes a liquid-gas phase change. The gas after the phase change transformation flows upward and continues to flow upward after contacting the first guide slope 18. It then flows through the middle flow channel 16 located above to the second phase change material receiving cavity 12. This allows the heat generated during the charging of the battery 200 to be dissipated to the outside through the first phase change material receiving cavity 11, the middle flow channel 16, and the second phase change material receiving cavity 12 in sequence. This ensures that the gaseous phase change material flows completely to the second phase change material receiving cavity 12, thereby ensuring effective heat dissipation.

[0045] Furthermore, a second flow guide slope 19 is formed at the bottom of the second phase change material receiving cavity 12. The outer side of the second flow guide slope 19 is higher than its inner side. That is, a first flow guide slope 18 is provided on the lower side of the second phase change material receiving cavity 12. Along the thickness direction of the side plate body 10, the side of the second flow guide slope 19 closest to the battery 200 is located below the side away from the battery 200. The inner side of the second flow guide slope 19 is lower than the outer side, which can ensure that the inclination of the second flow guide slope 19 is consistent with the inclination of the intermediate flow channel 16. After the gaseous phase change material enters the second phase change material receiving cavity 12, the gaseous phase change material continues to flow upward after contacting the bottom of the second phase change material receiving cavity 12. When the temperature of the battery 200 is lower than the preset temperature, the gaseous phase change material falls back and transforms into liquid phase change material. After contacting the second flow guide slope 19, it flows to the first phase change material receiving cavity 11 through the intermediate flow channel 16. This not only ensures the effective dissipation of heat, but also ensures the repeated use of the phase change material.

[0046] In addition, such as Figures 2-4 As shown, a heat sink 17 is provided on the outer surface of the outer plate 13. The heat sink 17 is located around the second phase change material receiving cavity 12. This allows the heat carried by the gaseous phase change material in the second phase change material receiving cavity 12 to be dissipated to the outside through the heat sink 17. Thus, the heat generated by the battery 200 during fast charging can be dissipated to the outside through the first phase change material receiving cavity 11, the intermediate flow channel 16, the second phase change material receiving cavity 12, and the heat sink 17 in sequence, thereby ensuring effective heat dissipation. For example, the heat sink 17 is a heat dissipation fin, which ensures the heat dissipation effect of the heat sink 17.

[0047] In addition, such as Figures 2-4 As shown, there are multiple first phase change material receiving cavities 11 and multiple second phase change material receiving cavities 12. The multiple first phase change material receiving cavities 11 are spaced apart in the height direction of the side plate, and the multiple second phase change material receiving cavities 12 are spaced apart in the height direction of the side plate. The multiple first phase change material receiving cavities 11 and the multiple second phase change material receiving cavities 12 are connected in a one-to-one correspondence.

[0048] It is understood that there are at least two first phase change material receiving cavities 11 and two second phase change material receiving cavities 12. The two first phase change material receiving cavities 11 are arranged vertically with a gap between them, and the two second phase change material receiving cavities 12 are arranged vertically with a gap between them. The phase change material is placed in the two first phase change material receiving cavities 11, which can increase the contact area between the first phase change material receiving cavity 11 and the battery 200. The second phase change material receiving cavity 12 corresponds to the first phase change material receiving cavity 11 one by one. This allows the heat generated by the battery 200 during fast charging to reach a preset value. The phase change material in the first phase change material receiving cavity 11 undergoes a phase change, changing from liquid to gas. The gas continues to flow to the second phase change material receiving cavity 12, which is away from the battery 200. This allows the heat carried by the gas to be dissipated to a place away from the battery 200, thereby meeting the user's fast-paced charging needs for the vehicle.

[0049] Optionally, the volume of the phase change material is V1, and the volume of the first phase change material receiving cavity 11 is V2. V1 and V2 satisfy the relationship: 1 / 4≤V1 / V2≤2 / 3.

[0050] In other words, the ratio between the volume of the phase change material and the volume of the first phase change material receiving cavity 11 must be within a reasonable range. If the volume of the phase change material is less than 1 / 4 of the volume of the first phase change material receiving cavity 11, there will be too little phase change material, which will not be able to dissipate the heat generated during the fast charging of the battery 200 in a timely manner, and the heat generated by the battery 200 will not be effectively managed. If the volume of the phase change material is greater than 2 / 3 of the volume of the first phase change material receiving cavity 11, there will be too much phase change material, and when the heat generated by the fast charging of the battery 200 reaches the preset temperature, the phase change material will not be able to effectively change from a liquid phase to a liquid phase. In a gaseous state, heat cannot be effectively dissipated. If the ratio between the volume of the phase change material and the volume of the first phase change material cavity 11 is within a reasonable range, it can not only effectively change the liquid phase change material into a gaseous state, but also dissipate the heat generated during fast charging of the battery 200 in a timely manner. This allows the side plate 100 of the battery module to effectively manage the heat generated by the battery 200, which is beneficial for balancing the temperature between the battery 200 and the cabin, extending the life of the battery 200, reducing the vehicle's charging time, and ensuring the vehicle's range, thereby meeting the user's need for fast charging of the vehicle.

[0051] Specifically, when the battery 200 is being charged, the temperature of the battery 200 rises. When the temperature rises to a preset value (greater than or equal to 50 degrees Celsius), the phase change material in the first phase change material receiving cavity 11 changes from a liquid state to a gaseous state. At this time, the phase change material absorbs heat, and the gaseous phase change material enters the second phase change material receiving cavity 12 through the intermediate flow channel 16. Finally, the heat is dissipated through the heat sink 17. When the temperature of the battery 200 gradually decreases (below 50 degrees Celsius), the gaseous phase change material enters the first phase change material receiving cavity 11 through the intermediate flow channel 16. At this time, the gaseous phase change material changes from a liquid state. The liquid phase change material forms a rapid film flow (flow velocity > 0.5 m / s) and returns to the first phase change material receiving cavity 11 under the action of gravity, completing the thermosiphon cycle.

[0052] The battery module 1000 according to this utility model includes: a plurality of batteries 200 and a side plate 100 of the battery module in the above embodiments. The plurality of batteries 200 are disposed on the inner side of the side plate body 10. The side plate 100 and the end plate 300 of the battery module are connected by eight long screws to form a space for placing the plurality of batteries 200. A first phase change material receiving cavity 11 and a second phase change material receiving cavity 12 are provided in the side plate body 10. The first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 can hold phase change materials. Moreover, the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 are arranged sequentially in the thickness direction of the side plate body 10. The plurality of batteries 200 are located on the inner side of the side plate body 10. This allows the phase change materials in the first phase change material receiving cavity 11 and the second phase change material receiving cavity 12 to flow sequentially when subjected to high temperatures. This allows the side plate 100 of the battery module to effectively manage the heat generated by the batteries 200, which is beneficial to balancing the temperature between the batteries 200 and the cabin.

[0053] As shown in the figure, multiple batteries 200 are arranged sequentially along the length of the side plate. The thickness direction of the battery 200 is the same as the length direction of the side plate. This optimizes the arrangement space of the battery 200 and allows the larger surface of the battery 200 to fit against the larger surface of the side plate. This allows the heat generated by the battery 200 during fast charging to be transferred to the side plate through the larger surface, which is beneficial for heat dissipation.

[0054] The battery pack according to this utility model includes: the battery module 1000 of the above embodiments. This arrangement allows the side plate 100 of the battery module to effectively manage the heat generated by the battery 200, which helps to balance the temperature between the battery 200 and the passenger compartment, can extend the life of the battery 200, and can reduce the vehicle's charging time.

[0055] The vehicle according to this utility model includes: the battery pack of the above embodiment. This arrangement can balance the temperature between the battery 200 and the passenger compartment, reduce the vehicle's charging time, ensure the vehicle's driving range, and thus meet the user's need for fast charging.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A side plate (100) of a battery module, characterized in that, include: The side plate body (10) has a first phase change material receiving cavity (11) and a second phase change material receiving cavity (12) formed inside it. The second phase change material receiving cavity (12) is located outside the first phase change material receiving cavity (11) in the thickness direction of the side plate body (10). The second phase change material receiving cavity (12) is connected to the first phase change material receiving cavity (11). A phase change material is disposed in the first phase change material receiving cavity (11) and is adapted to undergo phase change and flow to the second phase change material receiving cavity (12) when the temperature reaches a preset condition.

2. The side panel (100) of a battery module according to claim 1, characterized in that The side panel body (10) includes: outer panel(13); Inner panel (14); An intermediate plate (15) is disposed between the outer plate (13) and the inner plate (14). A first phase change material receiving cavity (11) is formed between the intermediate plate (15) and the inner plate (14). A second phase change material receiving cavity (12) is formed between the intermediate plate (15) and the outer plate (13). The intermediate plate (15) is provided with an intermediate flow channel (16) that connects the second phase change material receiving cavity (12) and the first phase change material receiving cavity (11).

3. The side panel (100) of a battery module according to claim 2, characterized in that The inner plate (14) has a first receiving groove (141) opening toward the intermediate plate (15), and the intermediate plate (15) covers the opening of the first receiving groove (141) to form the first phase change material receiving cavity (11); and / or The outer plate (13) has a second receiving groove (131) that opens toward the middle plate (15), and the middle plate (15) covers the opening of the second receiving groove (131) to form the second phase change material receiving cavity (12).

4. The side plate (100) of a battery module according to claim 2, characterized in that In the height direction of the side plate body (10), the bottom of the second phase change material receiving cavity (12) is higher than the bottom of the first phase change material receiving cavity (11).

5. The side panel (100) of a battery module according to claim 4, characterized in that The intermediate flow channel (16) is inclined, and one end of the intermediate flow channel (16) connected to the second phase change material receiving cavity (12) is higher than the other end connected to the first phase change material receiving cavity (11).

6. The side plate (100) of a battery module according to claim 2, characterized in that There are multiple intermediate channels (16), and the multiple intermediate channels (16) are distributed in rows and / or columns on the intermediate plate (15).

7. The side panel (100) of a battery module according to claim 6, characterized in that A portion of a plurality of intermediate channels (16) is connected between the top of the second phase change material receiving cavity (12) and the top of the first phase change material receiving cavity (11), and another portion of the plurality of intermediate channels (16) is connected between the bottom of the second phase change material receiving cavity (12) and the bottom of the first phase change material receiving cavity (11).

8. The side panel (100) of a battery module according to claim 7, characterized in that A first flow guide slope (18) is formed at the top of the first phase change material receiving cavity (11), and the outer side of the first flow guide slope (18) is higher than its inner side; and / or The bottom of the second phase change material receiving cavity (12) is formed with a second flow guide slope (19), and the outer side of the second flow guide slope (19) is higher than its inner side.

9. The side panel (100) of a battery module according to claim 2, characterized in that The outer surface of the outer plate (13) is provided with heat sinks (17), which are located around the second phase change material receiving cavity (12).

10. The side panel (100) of a battery module according to claim 1, characterized in that There are multiple first phase change material cavities (11) and multiple second phase change material cavities (12). The multiple first phase change material cavities (11) are spaced apart in the height direction of the side plate, and the multiple second phase change material cavities (12) are spaced apart in the height direction of the side plate. The multiple first phase change material cavities (11) and multiple second phase change material cavities (12) are connected in a one-to-one correspondence.

11. The side panel (100) of a battery module according to claim 1, characterized in that The volume of the phase change material is V1, and the volume of the first phase change material receiving cavity (11) is V2. V1 and V2 satisfy the relationship: 1 / 4≤V1 / V2≤2 / 3.

12. The side panel (100) of the battery module according to claim 1, characterized in that The phase change material is a liquid-gas phase change material.

13. A battery module (1000) characterized by include: Multiple batteries (200); The side panel (100) of the battery module according to any one of claims 1-12, wherein a plurality of batteries (200) are disposed on the inner side of the side panel body (10).

14. The battery module (1000) according to claim 13, characterized in that Multiple batteries (200) are arranged sequentially along the length of the side plate, and the thickness direction of the batteries (200) is the same as the length direction of the side plate.

15. A battery pack, characterized by include: The battery module (1000) according to any one of claims 13-14.

16. A vehicle characterized by comprising: include: The battery pack of claim 15.

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