Power battery and vehicle

Abstract

The application discloses a power battery and a vehicle, which comprise a battery shell and a heat conducting piece, the battery shell is internally provided with an installation groove for assembling a single battery cell, a flow channel for circulating temperature adjusting medium is arranged in the groove wall of the installation groove, and a part of the groove wall is used for contacting the single battery cell to realize direct heat conduction between the single battery cell and the groove wall, the heat conducting piece is arranged in the installation groove, and the heat conducting piece contacts the outer wall surface of the single battery cell and the groove wall of the installation groove to realize indirect heat conduction between the single battery cell and another part of the groove wall. The flow channel of the power battery of the application is integrally arranged in the battery shell, and the effective heat exchange area of a single battery cell and the battery shell is large, so that the heat exchange efficiency such as cooling of the single battery cell is fully guaranteed, and the use requirement of rapid cooling of the power battery is fully met.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a power battery and a vehicle. Background Technology

[0002] In recent years, vehicles such as automobiles and all-terrain vehicles have gradually moved towards electrification. Furthermore, with the improvement of overall vehicle performance in pure electric and hybrid vehicles, the performance requirements for vehicle power batteries are becoming increasingly stringent. Half-power and full-power batteries represent the current development trend in power batteries, but they suffer from high heat generation per unit time. However, current thermal management systems for power batteries suffer from low cooling efficiency and long cooling times, failing to meet the cooling requirements of full-power batteries. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] To this end, this invention proposes a power battery in which the flow channel is integrally disposed within the battery casing, and the effective heat exchange area of ​​a single cell and the battery casing is large, which fully ensures the heat exchange efficiency such as cooling of the single cell, thereby fully meeting the use requirements of rapid cooling of power batteries.

[0005] The present invention also proposes a vehicle including the above-described power battery.

[0006] The power battery of this invention includes:

[0007] A battery casing, wherein the battery casing has an installation groove for assembling individual battery cells, the groove wall has a flow channel for the flow of temperature regulating medium, and a portion of the groove wall is used to contact the individual battery cells to achieve direct heat conduction between the individual battery cells and the groove wall;

[0008] A heat-conducting component is disposed within the mounting groove, and the heat-conducting component is in contact with both the outer wall surface of the individual battery cell and the groove wall of the mounting groove to achieve indirect heat conduction between the individual battery cell and another part of the groove wall.

[0009] In some embodiments, the mounting slot extends along a first direction, and a plurality of individual battery cells are disposed in the mounting slot and stacked along the first direction. A heat-conducting element is disposed between any two adjacent individual battery cells.

[0010] In some embodiments, the mounting groove includes a bottom wall, and there are multiple heat-conducting elements, each of which includes a first plate portion and a second plate portion arranged at an angle.

[0011] Multiple individual battery cells are respectively disposed within the angle formed by the first plate portion and the second plate portion of each heat-conducting component. The first plate portion is sandwiched between two individual battery cells. Multiple heat-conducting components and multiple first plate portions are arranged alternately along the first direction. The second plate portion is sandwiched between the individual battery cell and the bottom wall of the tank.

[0012] In some embodiments, the single cell has a first side surface arranged opposite to each other in the first direction, the area of ​​the first side surface being the upper limit of the area of ​​the surfaces of different sides of the single cell, and the first plate portion being in contact with the first side surface.

[0013] In some embodiments, the length direction of the single cell is consistent with a second direction orthogonal to the first direction, the single cell has two second side surfaces arranged opposite to each other in the length direction, the mounting groove includes two groove sidewalls arranged opposite to each other in the second direction, and the two second side surfaces respectively contact the two groove sidewalls.

[0014] And / or, the mounting groove is closed at both ends in the first direction.

[0015] In some embodiments, there are multiple mounting slots, which are arranged at intervals along a second direction orthogonal to the first direction, and each mounting slot contains multiple individual battery cells.

[0016] In some embodiments, the mounting groove includes a bottom wall and two side walls arranged opposite to each other in the second direction, and the flow channel includes a first flow channel disposed in the side wall and a second flow channel disposed in the bottom wall, both the first flow channel and the second flow channel extending along the first direction.

[0017] In some embodiments, there are multiple second flow channels, which are arranged at intervals along the second direction, and at least one second flow channel is in communication with the first flow channel.

[0018] In some embodiments, the thermally conductive element and the individual battery cell are bonded and fixed together by thermally conductive adhesive.

[0019] In some embodiments, the battery includes an inlet pipe and a return pipe, both of which are located inside the battery casing. The flow channel connects the inlet pipe and the return pipe. The battery casing has an inlet port and a return port. The inlet pipe is connected to the inlet port, and the return pipe is connected to the return port.

[0020] In some embodiments, the battery casing includes:

[0021] The housing has a mounting groove located inside it, and the housing has an opening. The opening of the mounting groove and the opening face the same direction. The flow channel is located within the housing.

[0022] A cover that seals the opening of the box.

[0023] In some embodiments, the housing is provided with a partition cavity, which is located on the outer periphery of the mounting groove and is used to buffer the impact of external forces on the individual battery cells.

[0024] The vehicle in this embodiment of the invention includes the power battery as described in any of the above embodiments.

[0025] Beneficial effects: In the power battery and vehicle of the present invention, the flow channel of the power battery is integrated into the battery casing, and the effective heat exchange area of ​​a single cell and the battery casing is large, which fully ensures the heat exchange efficiency such as cooling of the single cell, thereby fully meeting the use needs of rapid cooling of power batteries. Attached Figure Description

[0026] Figure 1 This is an exploded view of the overall structure of the power battery according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the arrangement of the mounting slot and flow channel of the power battery according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the arrangement of a single battery cell and a heat-conducting component according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram showing the arrangement of multiple mounting slots inside the battery casing according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the stacked arrangement of multiple individual battery cells and multiple heat-conducting components according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the bottom wall and side wall of the mounting groove in an embodiment of the present invention.

[0032] Figure 7 This is an exploded schematic diagram of a single battery cell and a heat-conducting component according to an embodiment of the present invention.

[0033] Figure 8 This is a top view schematic diagram of the power battery according to an embodiment of the present invention.

[0034] Figure 9 yes Figure 8 Schematic diagram of cross-section at point AA.

[0035] Figure 10 yes Figure 9A magnified view of a portion of point A in the middle.

[0036] Figure 11 A schematic diagram of the arrangement of the inlet and return pipelines in an embodiment of the present invention.

[0037] Figure label:

[0038] 1-Battery casing; 11-Box body; 111-Inlet port; 112-Return port; 12-Cover; 13-Mounting slot; 131-Flow channel; 132-Bottom wall of the slot; 1321-Second flow channel; 133-Side wall of the slot; 1331-First flow channel; 134-End wall; 14-Cavity;

[0039] 2-Single battery cell; 21-First side; 22-Second side;

[0040] 3-Heat-conducting component; 31-First plate section; 32-Second plate section;

[0041] 4-Inlet pipe; 5-Return pipe. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] The power battery of this invention includes a battery casing 1, a single battery cell 2, and a heat-conducting component 3.

[0044] The battery casing 1 has an installation groove 13 for assembling individual battery cells 2. The groove wall of the installation groove 13 has a flow channel 131 for the flow of temperature regulating medium, and a part of the groove wall is used to contact the individual battery cells 2 to achieve direct heat conduction between the individual battery cells 2 and the groove wall.

[0045] For example, such as Figure 1 As shown, the battery case 1 can be set in two parts. The battery case 1 can include a housing 11 and a cover 12. The top of the housing 11 is open and has an opening. The cover 12 can be flat. The cover 12 can be fixed to the top side of the housing 11 and the cover 12 seals the opening of the housing 11.

[0046] The mounting slot 13 can be integrally formed within the aforementioned housing 11, and the opening of the mounting slot 13 can be arranged facing upwards. During assembly, the individual battery cell 2 can be directly placed in the mounting slot 13, and one or more individual battery cells 2 can be installed in the mounting slot 13 as needed.

[0047] like Figure 2As shown, the housing 11 may be provided with some partitions and other structures. The above-mentioned mounting groove 13 can be formed by the partitions. The groove wall shell of the mounting groove 13 is regarded as the partition that forms the mounting groove 13. The corresponding partitions may be provided with flow channels 131 for the flow of temperature regulating medium, etc. The temperature regulating medium may be antifreeze or other liquids.

[0048] When the aforementioned single battery cell 2 is assembled into the mounting groove 13, a portion of the groove wall of the mounting groove 13 can directly contact the corresponding surface of the single battery cell 2. Thus, the heat generated by the single battery cell 2 during use can be directly transferred to the groove wall of the mounting groove 13, and then the heat can be quickly dissipated to the outside by the temperature regulating medium in the flow channel 131.

[0049] The heat-conducting component 3 is disposed in the mounting groove 13, and the heat-conducting component 3 is in contact with the outer wall surface of the single cell 2 and the groove wall of the mounting groove 13 to achieve indirect heat conduction between the single cell 2 and another part of the groove wall.

[0050] For example, such as Figure 3 As shown, the heat-conducting component 3 can be made of a material with good thermal conductivity. The heat-conducting component 3 can be directly fixed to the corresponding surface of the single battery cell 2. During assembly, the single battery cell 2 can be directly placed into the mounting groove 13 with the heat-conducting component 3 connected to it, and the heat-conducting component 3 can be in close contact with another part of the groove wall of the mounting groove 13.

[0051] When in use, the heat generated by the individual battery cell 2 can first be conducted to the heat-conducting component 3, and then the heat can be conducted to the wall of the mounting groove 13 through the heat-conducting component 3, and finally discharged to the outside under the action of the flowing temperature-regulating medium.

[0052] It should be noted that the power battery of this embodiment of the invention is not only designed for the case of excessively high operating temperature of the single cell 2, but also for the case of severe cold weather such as winter, where heat can be transferred to the single cell 2 directly or indirectly through a temperature regulating medium, thereby heating up the single cell 2 and avoiding severe battery degradation under low temperature conditions.

[0053] In the power battery of this embodiment, the flow channel 131 of the power battery is integrally disposed in the groove wall of the mounting groove 13 of the battery shell 1, and the surface of the individual cell 2 achieves heat conduction with the corresponding groove wall of the mounting groove 13 through direct contact or indirect contact with the heat-conducting component 3, thereby increasing the effective heat exchange area of ​​the individual cell 2 and fully ensuring the heat exchange efficiency such as cooling of the individual cell 2, thus fully meeting the use requirements of rapid cooling of power batteries.

[0054] In some embodiments, the mounting groove 13 extends along a first direction and is provided with a plurality of individual battery cells 2. The plurality of individual battery cells 2 are all provided in the mounting groove 13 and stacked along the first direction. A heat-conducting element 3 is provided between any two adjacent individual battery cells 2.

[0055] For example, such as Figure 4 As shown, the mounting slot 13 can be a rectangular slot, with the first direction being the front-to-back direction. The mounting slot 13 can extend along the front-to-back direction. Multiple individual battery cells 2 can be installed within the mounting slot 13, such as... Figure 5 As shown, multiple individual battery cells 2 can be stacked in the front-to-back direction, and multiple heat-conducting components 3 can be provided. The multiple individual battery cells 2 and multiple heat-conducting components 3 can be arranged alternately in the front-to-back direction. This allows two adjacent individual battery cells 2 to share a single heat-conducting component 3, which helps to simplify the overall structural layout.

[0056] In some embodiments, the mounting groove 13 includes a groove bottom wall 132, and there are multiple heat-conducting elements 3, each heat-conducting element 3 including a first plate portion 31 and a second plate portion 32 arranged at an angle. For example, as Figure 6 As shown, the bottom wall 132 of the groove is the groove wall that is opposite to the groove opening of the mounting groove 13 in the vertical direction, such as... Figure 7 As shown, the heat-conducting component 3 can be generally L-shaped. The heat-conducting component 3 can be divided into two parts according to the different extension directions. The two parts are the first plate part 31 and the second plate part 32. Both the first plate part 31 and the second plate part 32 can be flat. The first plate part 31 can be arranged vertically, while the second plate part 32 can be arranged horizontally.

[0057] Multiple individual battery cells 2 are respectively disposed within the angle formed by the first plate portion 31 and the second plate portion 32 of each heat-conducting component 3. The first plate portion 31 is sandwiched between two individual battery cells 2. Multiple heat-conducting components 3 and multiple first plate portions 31 are arranged alternately along the first direction. The second plate portion 32 is sandwiched between the individual battery cell 2 and the bottom wall 132 of the tank.

[0058] For example, such as Figure 7 As shown, the first plate portion 31 and the second plate portion 32 can form a near-right-angle structure. During assembly, the individual battery cell 2 can be directly placed within the right angle of the heat-conducting component 3, wherein the rear surface of the individual battery cell 2 can be in contact with the first plate portion 31, and the bottom surface of the individual battery cell 2 can be in contact with the second plate portion 32. Furthermore, after multiple individual battery cells 2 are placed in the mounting groove 13, the first plate portion 31 can be clamped between two adjacent individual battery cells 2 in the front-back direction, and each second plate portion 32 can be bent towards the front of the heat-conducting component 3 and clamped between the individual battery cell 2 and the bottom wall 132 of the mounting groove 13. This ensures effective heat conduction for each individual battery cell 2.

[0059] In some other embodiments, the heat-conducting element 3 can also be integrally formed. For example, the second plate portion 32 of the above-mentioned multiple heat-conducting elements 3 can be connected as one piece and located on the same plane, and the single cell 2 can be inserted and assembled between two adjacent first plate portions 31.

[0060] In some embodiments, the single cell 2 has a first side surface 21 arranged opposite to each other in a first direction, the area of ​​the first side surface 21 being the upper limit of the area of ​​the surfaces of different sides of the single cell 2, and the first plate portion 31 is in contact with the first side surface 21.

[0061] For example, such as Figure 7 As shown, the single cell 2 can be roughly rectangular, and the first side 21 can be the front or back surface of the single cell 2. The single cell 2 has six surfaces in total. Among these surfaces, the first side 21 has the largest area, that is, the first side 21 is the large surface of the single cell 2.

[0062] The first plate portion 31 of the aforementioned heat-conducting component 3 can be in contact with the first side 21 of the corresponding single cell 2. Since the heat-conducting component 3 has good thermal conductivity, the heat conduction efficiency between the single cell 2 and the wall of the mounting groove 13 is fully guaranteed.

[0063] In some embodiments, the length direction of the single cell 2 is consistent with the second direction orthogonal to the first direction, the single cell 2 has two second side surfaces 22 arranged opposite to each other in the length direction, and the mounting groove 13 includes two groove sidewalls 133 arranged opposite to each other in the second direction, and the two second side surfaces 22 respectively contact the two groove sidewalls 133.

[0064] For example, such as Figure 7 As shown, the second direction and the length direction of the single cell 2 can both be left and right. The second side 22 can be the left or right side of the single cell 2. The second side 22 is also the surface with the smallest area among the multiple surfaces of the single cell 2.

[0065] like Figure 6 As shown, the sidewalls 133 of the mounting groove can be two groove walls arranged opposite each other in the left-right direction. When a single battery cell 2 is assembled into the mounting groove 13, the second side 22 on the left side of each single battery cell 2 can be in close contact with the left sidewall 133 of the mounting groove 13, and the second side 22 on the right side of each single battery cell 2 can be in close contact with the right sidewall 133 of the mounting groove 13. This increases the contact area between the single battery cell 2 and the groove wall of the mounting groove 13, ensuring heat exchange effect and efficiency.

[0066] In some embodiments, the mounting groove 13 is closed at both ends in the first direction. For example, as Figure 6As shown, the mounting groove 13 can be provided with end walls 134 at both ends in the front and rear directions. The end walls 134 can be connected between the two side walls 133 of the groove. This can enhance the independence of the internal space of each mounting groove 13 and achieve a better isolation effect. On the other hand, the end walls 134 can be provided with flow channels 131, which facilitates the convergence of flow channels 131 in different directions, and thus facilitates the connection with the subsequent liquid inlet pipe 4 and liquid return pipe 5.

[0067] In some embodiments, there are multiple mounting slots 13, which are spaced apart along a second direction orthogonal to the first direction, and each mounting slot 13 houses multiple individual battery cells 2. For example, as Figure 6 As shown, the mounting slots 13 can be provided in three, four, five, six, or other quantities. Each mounting slot 13 can extend along the front-to-back direction, and multiple mounting slots 13 can be spaced apart in the left-to-right direction. Each mounting slot 13 can be equipped with multiple individual battery cells 2 and multiple heat-conducting components 3. This ensures the capacity of the power battery and also achieves the separation of the arrangement of multiple individual battery cells 2.

[0068] In some embodiments, such as Figure 8 As shown, the cover 12 of the battery case 1 can be flat and can be fastened to the top side of the box 11. The corners of the cover 12 can be rounded, which can eliminate stress concentration.

[0069] In some embodiments, the mounting groove 13 includes a bottom wall 132 and two side walls 133 arranged opposite to each other in a second direction. The flow channel 131 includes a first flow channel 1331 disposed in the side wall 133 and a second flow channel 1321 disposed in the bottom wall 132. Both the first flow channel 1331 and the second flow channel 1321 extend along the first direction.

[0070] For example, such as Figure 9 As shown, two adjacent mounting slots 13 can share a slot sidewall 133. Each slot sidewall 133 can be provided with a first flow channel 1331. The cross-section of the first flow channel 1331 can be rectangular and can extend in the vertical direction. Each mounting slot 13 bottom wall 132 can be provided with a second flow channel 1321. The cross-section of the second flow channel 1321 can also be rectangular and can extend in the horizontal direction.

[0071] The first flow channel 1331 and the second flow channel 1321 can both be arranged to extend along the front and rear direction, thereby meeting the cooling needs of the individual cells 2 at various positions of the mounting groove 13 in the extension direction. Furthermore, the arrangement of the first flow channel 1331 and the second flow channel 1321 can also serve to cover the individual cells 2, thereby fully ensuring the heat exchange effect between the different surfaces of the individual cells 2.

[0072] In some embodiments, there are multiple second flow channels 1321, which are arranged at intervals along a second direction, and at least one second flow channel 1321 is connected to the first flow channel 1331.

[0073] For example, such as Figure 10 As shown, each mounting slot 13 can have two second flow channels 1321 on its bottom wall 132. The two second flow channels 1321 can be arranged at intervals along the left and right direction. The second flow channel 1321 on the right side can communicate with the first flow channel 1331. In some other embodiments, the second flow channel 1321 on the left side can also communicate with the first flow channel 1331. This allows for the synchronization of the flow of the temperature-regulating medium in the side wall 133 and bottom wall 132 of the slot, thereby improving the overall heat exchange effect.

[0074] In some embodiments, the heat-conducting component 3 and the individual battery cell 2 are bonded and fixed together by thermally conductive adhesive. For example, the first plate portion 31 can be bonded and fixed to the rear surface of the individual battery cell 2 by thermally conductive adhesive, and the second plate portion 32 can be bonded and fixed to the bottom surface of the individual battery cell 2 by thermally conductive adhesive. This achieves an integrated arrangement of the heat-conducting component 3 and the individual battery cell 2, facilitating installation and arrangement within the mounting slot 13, and also ensuring the heat conduction efficiency between the individual battery cell 2 and the heat-conducting component 3.

[0075] In some embodiments, the power battery includes an inlet pipe 4 and a return pipe 5, both of which are located inside the battery casing 1. A flow channel 131 is connected between the inlet pipe 4 and the return pipe 5. The battery casing 1 is provided with an inlet port 111 and a return port 112. The inlet pipe 4 is connected to the inlet port 111, and the return pipe 5 is connected to the return port 112.

[0076] For example, such as Figure 11 As shown, both the inlet port 111 and the return port 112 can be connecting flanges. Both the inlet port 111 and the return port 112 can be located on the front wall of the housing 11. Both the inlet pipe 4 and the return pipe 5 can be short pipes. The rear end of the inlet pipe 4 can be connected to the flow channel 131 within the corresponding end wall 134, and the front end of the inlet pipe 4 can be connected to the inlet port 111. The rear end of the return port 112 can be connected to the flow channel 131 within the corresponding end wall 134, and the front end of the return pipe 5 can be connected to the return port 112.

[0077] This facilitates the circulation of the temperature-regulating medium through the inlet pipe 4 and the return pipe 5 to the flow channels 131 in the walls of each mounting tank 13, simplifying the overall structural layout.

[0078] In some embodiments, the housing 11 is provided with a cavity 14, which is located on the outer periphery of the mounting groove 13 and is used to buffer the impact of external forces on the individual battery cell 2. For example, as Figure 9 As shown, the left and right sides of the housing 11 can be provided with cavities 14. The cavities 14 are hollow and can extend along the front-back direction. When the housing 11 is impacted from the left or right, the cavities 14 can provide a certain deformation buffer space, thereby avoiding the impact from directly impacting and squeezing the individual battery cells 2, and improving the safety of use.

[0079] The vehicle according to an embodiment of the present invention is described below.

[0080] The vehicle in this embodiment of the invention includes a power battery, which can be the power battery described in any of the above embodiments. The vehicle can be a sedan, SUV, bus, or other vehicle that uses a power battery as its power source.

[0081] In the vehicle power battery of this embodiment, heat conduction and heat exchange can be achieved on all five surfaces of each individual cell 2, thereby fully ensuring the overall heat exchange efficiency and meeting the needs of power-type power batteries. Furthermore, since each mounting slot 13 has a flow channel 131 within its wall, the temperature unevenness and heat accumulation of the individual cells 2 during use are also improved.

[0082] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0086] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A power battery, characterized in that, include: A battery casing, wherein the battery casing has an installation groove for assembling individual battery cells, the groove wall has a flow channel for the flow of temperature regulating medium, and a portion of the groove wall is used to contact the individual battery cells to achieve direct heat conduction between the individual battery cells and the groove wall; A heat-conducting component is disposed within the mounting groove, and the heat-conducting component is in contact with both the outer wall surface of the individual battery cell and the groove wall of the mounting groove to achieve indirect heat conduction between the individual battery cell and another part of the groove wall.

2. The power battery according to claim 1, characterized in that, The mounting slot extends along a first direction, and a plurality of individual battery cells are provided in the mounting slot. The plurality of individual battery cells are all provided in the mounting slot and stacked along the first direction. A heat-conducting element is provided between any two adjacent individual battery cells.

3. The power battery according to claim 2, characterized in that, The mounting groove includes a bottom wall, and there are multiple heat-conducting components, each of which includes a first plate portion and a second plate portion arranged at an angle. Multiple individual battery cells are respectively disposed within the angle formed by the first plate portion and the second plate portion of each heat-conducting component. The first plate portion is sandwiched between two individual battery cells. Multiple heat-conducting components and multiple first plate portions are arranged alternately along the first direction. The second plate portion is sandwiched between the individual battery cell and the bottom wall of the tank.

4. The power battery according to claim 3, characterized in that, The single cell has a first side surface arranged opposite to each other in the first direction, the area of ​​the first side surface being the upper limit of the area of ​​the surfaces of different sides of the single cell, and the first plate portion being in contact with the first side surface.

5. The power battery according to claim 2, characterized in that, The length direction of the single cell is consistent with the second direction orthogonal to the first direction. The single cell has two second side surfaces arranged opposite to each other in the length direction. The mounting groove includes two groove sidewalls arranged opposite to each other in the second direction. The two second side surfaces respectively contact the two groove sidewalls. And / or, the mounting groove is closed at both ends in the first direction.

6. The power battery according to claim 2, characterized in that, There are multiple mounting slots, which are arranged at intervals along a second direction orthogonal to the first direction. Each mounting slot contains multiple individual battery cells.

7. The power battery according to claim 6, characterized in that, The mounting groove includes a bottom wall and two side walls arranged opposite each other in the second direction. The flow channel includes a first flow channel disposed in the side wall and a second flow channel disposed in the bottom wall. Both the first flow channel and the second flow channel extend along the first direction.

8. The power battery according to claim 7, characterized in that, There are multiple second flow channels, which are arranged at intervals along the second direction, and at least one second flow channel is connected to the first flow channel.

9. The power battery according to claim 1, characterized in that, The thermally conductive component and the individual battery cell are bonded and fixed together by thermally conductive adhesive.

10. The power battery according to claim 1, characterized in that, It includes an inlet pipe and a return pipe, both of which are located inside the battery casing. The flow channel connects the inlet pipe and the return pipe. The battery casing has an inlet port and a return port. The inlet pipe is connected to the inlet port, and the return pipe is connected to the return port.

11. The power battery according to any one of claims 1-10, characterized in that, The battery casing includes: The housing has a mounting groove located inside it, and the housing has an opening. The opening of the mounting groove and the opening face the same direction. The flow channel is located within the housing. A cover that seals the opening of the box.

12. The power battery according to claim 11, characterized in that, The housing is provided with a partition cavity, which is located on the outer periphery of the mounting groove and is used to buffer the impact of external forces on the individual battery cells.

13. A vehicle, characterized in that, Includes the power battery as described in any one of claims 1-12 above.

Images