Battery pack case and battery pack

Abstract

The application discloses a battery pack box and a battery pack. The box body of the battery pack box is provided with a containing cavity for containing single batteries, and the box body is also provided with a first flow port, and the containing cavity is communicated with an inlet flow channel or an outlet flow channel through the first flow port. Heat exchange fluid is introduced into the containing cavity from the inlet flow channel to exchange heat with the single batteries, and the heat exchange fluid is discharged through the outlet flow channel. The driving part of the driving assembly is configured to drive the connecting part to drive each linkage to rotate through the movement of the driving part, and then drive the corresponding baffle to rotate through each linkage to adjust the flow area of the first flow port. The application adjusts the flow area of the first flow port to adjust the size of the air inlet or air outlet, further adjusts the heat exchange time of the single batteries and the heat exchange fluid, well adjusts the temperature of the single batteries, and reduces the risk of excessively high or low temperature of the single batteries.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack housing and a battery pack. Background Technology

[0002] In recent years, with the continuous development of new energy vehicles, power batteries, as the power source for these vehicles, have been widely used. Currently, the internal temperature of the battery packs in new energy vehicles is prone to being too low or too high in winter or summer, which can lead to reduced battery activity and unsatisfactory cycle performance. Therefore, it is urgent to regulate the internal temperature of the battery packs. Summary of the Invention

[0003] This application provides a battery pack housing and a battery pack that can regulate the temperature of individual battery cells.

[0004] This application provides a battery pack housing, comprising: a housing body having an inlet channel, a receiving cavity, and an outlet channel, the inlet channel, the receiving cavity, and the outlet channel being fluidly connected; the receiving cavity being used to receive a single battery cell; heat exchange fluid entering the receiving cavity from the inlet channel to exchange heat with the single battery cell; and the heat exchange fluid being discharged through the outlet channel; the housing body having a first flow port; the receiving cavity being connected to the inlet channel or the outlet channel through the first flow port; a louver assembly including at least two louvers, each louver being rotatably disposed on the housing body; and a drive assembly including a linkage member, a connecting member, and a drive member; the louvers having linkage members; the connecting members being linked to the linkage members and the drive member respectively; wherein the drive member is configured to be able to drive the connecting members to rotate through its own movement, thereby driving the corresponding louvers to rotate through the linkage members to adjust the flow area of ​​the first flow port.

[0005] In one embodiment of this application, the box body has a first direction; wherein, each louver is distributed sequentially along the first direction, and the driving member is configured to move along the first direction to drive each linkage member to rotate.

[0006] In one embodiment of this application, the linkage member has a linkage hole, which is an oblong hole. One end of the connector is connected to the drive member, and the other end is rotatably embedded in the linkage hole. The linkage member is configured to be able to rotate about a rotation axis.

[0007] In one embodiment of this application, the linkage hole extends toward the rotation axis; during the rotation of the linkage member, the connecting member can also move synchronously along the linkage hole.

[0008] In one embodiment of this application, the battery pack housing further has a second direction, which intersects the rotation axis; the linkage includes: a connecting portion connected to the louvered plate and extending along the rotation axis; and a linkage portion connected to the connecting portion and extending along the second direction, with a linkage hole formed in the linkage portion.

[0009] In one embodiment of this application, one of the louvers and the linkage is provided with a limiting block, and the other is provided with a limiting groove. The limiting block is embedded in the limiting groove, and the limiting block and the limiting groove cooperate to enable the louvers and the linkage to rotate synchronously.

[0010] In one embodiment of this application, the louvered plate is provided with a limiting block and a first fixing hole; the linkage is provided with a limiting groove and a second fixing hole; the battery pack housing further includes a fixing member, which passes through the first fixing hole and the second fixing hole to fix the louvered plate and the linkage member.

[0011] In one embodiment of this application, the drive assembly further includes: a guide member disposed on the housing body, and the guide member is provided with a guide groove, the drive member being movably disposed in the guide groove, the guide groove being used to guide the movement of the drive member.

[0012] In one embodiment of this application, the drive assembly further includes: a power component disposed on the housing body, and a drive gear disposed at the output end of the power component; wherein, the drive component is provided with a drive rack, the drive rack meshes with the drive gear, and the power component drives the drive component to move through the drive rack and the drive gear transmission cooperation.

[0013] In one embodiment of this application, the box body includes a first main body and a second main body, which are stacked together. The first main body encloses and forms a receiving cavity. An inlet channel and an outlet channel are located between the first main body and the second main body. A first outlet is opened in the first main body.

[0014] In one embodiment of this application, the inlet channel has an inlet located in the second main body, and the heat exchange fluid enters the inlet channel from the inlet; the outlet channel has an outlet located in the second main body, and the heat exchange fluid is discharged through the outlet; the receiving cavity is connected to the outlet through a first through port; the first main body is provided with an through port assembly, which includes at least two second through ports, and the receiving cavity is connected to the inlet through each second through port.

[0015] In one embodiment of this application, the inlet and outlet are respectively disposed on opposite sides of the second main body, and the second outlets of the outlet assembly are distributed sequentially at intervals along the direction from the inlet to the outlet, and the flow area of ​​the second outlet closer to the inlet is smaller than the flow area of ​​the second outlet closer to the outlet.

[0016] Accordingly, this application also provides a battery pack, including a single battery cell and a battery pack housing as described in the above embodiments, wherein the single battery cell is housed in the battery pack housing and is disposed in the housing cavity at a position corresponding to the inlet channel.

[0017] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a battery pack housing and a battery pack. The housing body is provided with a receiving cavity for accommodating individual batteries, and the housing body also has a first flow port. The receiving cavity is connected to an inlet channel or an outlet channel through the first flow port. Heat exchange fluid enters the receiving cavity from the inlet channel to exchange heat with the individual batteries, and the heat exchange fluid is discharged through the outlet channel. The driving component of the drive assembly is configured to drive the connecting components to rotate through its own movement, thereby driving the corresponding louvers to rotate to adjust the flow area of ​​the first flow port. This application, by adjusting the flow area of ​​the first flow port, adjusts the inlet or outlet air volume, thereby adjusting the heat exchange time between the individual battery and the heat exchange fluid, and can effectively regulate the temperature of the individual batteries, thus reducing the risk of excessively high or low temperatures in the individual batteries. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the battery pack of this application;

[0020] Figure 2 yes Figure 1 The diagram shows the exploded structure of the battery pack.

[0021] Figure 3 This is a schematic diagram of the structure of one embodiment of the battery pack housing of this application;

[0022] Figure 4 yes Figure 3 A top view of the battery pack housing shown.

[0023] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure of the battery pack housing along the AA direction;

[0024] Figure 6 yes Figure 4 A schematic diagram of the cross-sectional structure of the battery pack housing along the BB direction;

[0025] Figure 7 yes Figure 6The diagram shows the structural diagram of area C of the battery pack housing.

[0026] Figure 8 This is a schematic diagram of the structure of an embodiment of the driver component of this application;

[0027] Figure 9 This is an exploded structural diagram of an embodiment of the louvered panel and linkage of this application;

[0028] Figure 10 This is a schematic diagram of the structure of one embodiment of the linkage component of this application;

[0029] Figure 11 This is a schematic diagram of an embodiment of the operation process of the linkage component in this application;

[0030] Figure 12 yes Figure 9 A schematic diagram of the structure of region D of the louvered panel shown;

[0031] Figure 13 This is a structural schematic diagram of an embodiment of the guide component of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10 Battery pack; 20 Battery pack housing; 21 Housing body; 211 First main body; 212 Second main body; 221 Inlet channel; 2211 Inlet port; 2212 Inlet channel body; 222 Receiving cavity; 223 Outlet channel; 2233 Outlet channel body; 2234 Outlet port; 224 First overflow port; 225 Overflow port assembly; 2251 Second overflow port; 23 Louver assembly; 231 Louver; 2311 First fixing hole; 2312 Rotating shaft; 24 Drive assembly; 241 Linkage component; 2411 Linkage hole; 2412 Second fixing hole; 2413 Connecting part; 2414 Linkage part; 242 Connecting component; 243 Drive component; 2431 Drive rack; 244 Guide component; 2441 Guide groove; 245 Power component; 2451 Drive gear; 251 Limiting block; 252 Limiting groove; 26 Fixing component; 27 Cover; 30 Single battery cell. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.

[0035] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] This application provides a battery pack housing and a battery pack, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0037] To address the technical problem of excessively high or low internal temperatures in existing battery packs, one embodiment of this application provides a battery pack housing. The battery pack housing includes a main body with an inlet channel, a receiving cavity, and an outlet channel. These three channels are fluidly connected. The receiving cavity accommodates individual battery cells. Heat exchange fluid enters the receiving cavity through the inlet channel to exchange heat with the individual cells, and the heat exchange fluid exits through the outlet channel. The main body has a first flow port, through which the receiving cavity communicates with either the inlet or outlet channel. The battery pack housing also includes a louver assembly comprising at least two louvers, each rotatably mounted on the main body. Furthermore, the battery pack housing includes a drive assembly comprising a linkage, a connector, and a driving component. The louvers are equipped with linkages, and the connectors are linked to both the linkages and the driving component. The driving component is configured to move to drive the connectors to rotate, thereby rotating the corresponding louvers to adjust the flow area of ​​the first flow port. The following section will elaborate on this point.

[0038] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an embodiment of the battery pack of this application. Figure 2 yes Figure 1 The diagram shows the exploded structure of the battery pack.

[0039] In one embodiment, the battery pack 10 includes a battery assembly and a battery pack housing 20. The battery assembly includes a plurality of individual cells 30, which are housed in the battery pack housing 20.

[0040] The battery pack 10 provides electrical energy to electrical devices. These devices can be mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers. Individual battery cells 30 can be housed independently within the battery pack housing 20. Alternatively, multiple individual battery cells 30 can be integrated into a battery module or battery pack housed within the battery pack housing 20, such as... Figure 2 As shown. The single cell 30 includes, but is not limited to, lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments disclosed herein do not limit this to any particular type.

[0041] The following describes the battery pack housing 20 according to an embodiment of this application.

[0042] Please refer to the following: Figures 3 to 7 , Figure 3 This is a structural schematic diagram of one embodiment of the battery pack housing of this application. Figure 4 yes Figure 3 The diagram shows a top view of the battery pack housing. Figure 5 yes Figure 4 The diagram shows a cross-sectional view of the battery pack housing along the AA direction. Figure 6 yes Figure 4 The diagram shows a cross-sectional view of the battery pack housing along the BB direction. Figure 7 yes Figure 6 The diagram shows the structure of region C of the battery pack housing.

[0043] In one embodiment, the battery pack housing 20 includes a main body 21. The main body 21 is provided with a receiving cavity 222 for accommodating a single battery cell 30. The main body 21 is also provided with an inlet channel 221 and an outlet channel 223. The inlet channel 221, the receiving cavity 222, and the outlet channel 223 are in fluid communication. Heat exchange fluid enters the receiving cavity 222 from the inlet channel 221 to exchange heat with the single battery cell 30, and the heat exchange fluid is discharged through the outlet channel 223. The single battery cell 30 is disposed in the receiving cavity 222 at a position corresponding to the inlet channel 221. The main body 21 is also provided with a first flow port 224, through which the receiving cavity 222 communicates with the inlet channel 221 or the outlet channel 223. This embodiment of the application uses the example of the receiving cavity 222 communicating with the outlet channel 223 through the first flow port 224 for illustration only, and is not intended to limit the scope of the application.

[0044] Furthermore, a fan can be installed to guide the heat exchange fluid outside the battery pack 10 into the battery pack 10 for heat exchange with the individual battery cells 30 in the battery pack 10. Additionally, the main body 21 specifically includes a cover 27 and a lower housing, with the cover 27 and the lower housing docking to form a receiving cavity 222.

[0045] In one embodiment, the lower housing includes a first main body portion 211 and a second main body portion 212. The first main body portion 211 and the second main body portion 212 are stacked. The first main body portion 211 encloses a receiving cavity 222, an inlet channel 221 and an outlet channel 223 are located between the first main body portion 211 and the second main body portion 212, and a first outlet 224 is formed in the first main body portion 211. The first outlet 224 is disposed on the first main body portion 211 and communicates with the outlet channel 223.

[0046] Specifically, the inlet channel 221 includes an inlet 2211 and an inlet channel body 2212. The inlet 2211 is disposed in the second main body 212, and the inlet channel body 2212 is located between the first main body 211 and the second main body 212. The first main body 211 is also provided with an outlet assembly 225, which includes a second outlet 2251. The inlet 2211 communicates with the second outlet 2251 through the inlet channel body 2212, and then communicates with the receiving cavity 222 through the second outlet 2251. The heat exchange fluid introduced from the inlet 2211 sequentially enters the receiving cavity 222 through the inlet channel body 2212 and the second outlet 2251.

[0047] The outflow channel 223 includes an outflow channel body 2233 and an outflow port 2234. The outflow channel body 2233 is located between the first main body portion 211 and the second main body portion 212, and the outflow port 2234 is disposed in the second main body portion 212. The outflow port 2234 is connected to the first flow port 224 through the outflow channel body 2233, and then connected to the receiving cavity 222 through the first flow port 224. The heat exchange fluid in the receiving cavity 222 passes through the first flow port 224 and the outflow channel body 2233 in sequence, and then is discharged from the outflow port 2234.

[0048] In one embodiment, the flow port assembly 225 includes at least two second flow ports 2251, and the receiving cavity 222 is connected to the inlet 2211 through each of the second flow ports 2251. The inlet 2211 and the outlet 2234 are respectively disposed on opposite sides of the second main body 212, and the second flow ports 2251 of the flow port assembly 225 are sequentially spaced apart along the direction from the inlet 2211 toward the outlet 2234. The flow area of ​​the second flow port 2251 closer to the inlet 2211 is smaller than the flow area of ​​the second flow port 2251 closer to the outlet 2234.

[0049] The second flow ports 2251 in the flow port assembly 225 are arranged sequentially along the first direction, and the individual cells 30 in the battery module are also arranged sequentially along the first direction. The flow resistance of the second flow port 2251 near the inlet 2211 is less than that of the second flow port 2251 near the outlet 2234. Therefore, in this embodiment, the flow area of ​​the second flow port 2251 near the inlet 2211 is smaller than that of the second flow port 2251 near the outlet 2234. This is beneficial to ensure that the heat exchange fluid flow rate of each second flow port 2251 in the flow port assembly 225 is consistent, which is conducive to uniform heat exchange of the individual cells 30 at different positions in the battery module.

[0050] It should be noted that, in the direction from the inlet 2211 to the outlet 2234, the flow resistance at different locations of the second flow ports 2251 in the flow port assembly 225 is not a simple increasing relationship, and the flow area of ​​each second flow port 2251 in the flow port assembly 225 is also related to the heat generation of the individual battery cells 30 at different locations in the battery module. The flow area of ​​each second flow port 2251 in the flow port assembly 225 can be designed based on simulation results. Therefore, in this embodiment, in the direction from the inlet 2211 to the outlet 2234, the flow area of ​​each second flow port 2251 in the flow port assembly 225 generally shows an increasing trend, allowing the flow area of ​​some second flow ports 2251 to not completely follow this increasing rule.

[0051] For example, the battery pack 10 of this application embodiment contains two sets of battery modules. Each battery module is provided with a corresponding inlet channel 221 and an outlet channel 223. The battery pack housing 20 of this application embodiment has two sets of inlets 2211 and outlets 2234, realizing dual-inlet and dual-outlet circulating heat exchange for the battery pack 10.

[0052] For each battery module, the inlet channel 221 includes two inlet channel bodies 2212. Each inlet channel body 2212 is located on both sides of the first outlet 224. The inlet channel bodies 2212 extend along the arrangement direction of the louvers 231. The heat exchange fluid entering from the inlet 2211 is diverted to each inlet channel body 2212 and enters the receiving cavity 222 through each inlet channel body 2212. Furthermore, two outlet combinations 225 are provided for each battery module, and each outlet combination 225 corresponds to one inlet channel body 2212. The second flow ports 2251 in the flow port assembly 225 are distributed sequentially at intervals along the extension direction of the inlet channel body 2212. Each inlet channel body 2212 is connected to the receiving cavity 222 through the second flow ports 2251 of the corresponding flow port assembly 225. The heat exchange fluid in each inlet channel body 2212 enters the receiving cavity 222 through the second flow ports 2251 of the corresponding flow port assembly 225.

[0053] Please refer to the following: Figure 8 In one embodiment, the battery pack housing 20 further includes a louver assembly 23. The louver assembly 23 includes at least two louvers 231, each louver 231 being rotatably disposed on the housing body 21.

[0054] The battery pack housing 20 also includes a drive assembly 24. The drive assembly 24 includes a linkage 241, a connector 242, and a drive component 243. The louver 231 is provided with a linkage 241, and the connector 242 is linked to the linkage 241 and the drive component 243 respectively. The drive component 243 is configured to drive the connector 242 to rotate each linkage 241 through its own movement, thereby driving the corresponding louver 231 to rotate through each linkage 241 to adjust the flow area of ​​the first flow port 224.

[0055] In this embodiment, by adjusting the flow area of ​​the first flow port 224, the flow rate of the heat exchange fluid in and out of the receiving cavity 222 is adjusted to regulate the heat exchange time between the individual battery 30 and the heat exchange fluid. This allows for the regulation of the temperature of the individual battery 30, thereby reducing the risk of problems such as excessively high or low temperatures in the individual battery 30. This embodiment helps to ensure the activity and discharge capacity of the individual battery 30, thereby improving the battery life of the electrical device using the battery pack 10 of this embodiment.

[0056] For example, the first flow port 224 extends along a first direction, and each louver 231 is disposed at the first flow port 224. In operating conditions with low external ambient temperature (e.g., winter), the temperature of the applied heat exchange fluid is high. When the temperature of the individual battery 30 is too low, the louvers 231 are driven to rotate to minimize the flow area of ​​the first flow port 224, reducing or slowing the discharge of the heat exchange fluid, allowing more heat exchange fluid to remain in the receiving cavity 222, thereby efficiently increasing the temperature of the individual battery 30 and providing insulation. When the temperature of the individual battery 30 is too high, the louvers 231 are driven to rotate to maximize the flow area of ​​the first flow port 224, accelerating the discharge of the heat exchange fluid, allowing the heat of the individual battery 30 to dissipate through the heat exchange fluid, achieving a cooling effect. When the temperature of the individual battery 30 is suitable, the angle of the louvers 231 is controlled so that the flow area of ​​the first flow port 224 is adapted to the current temperature of the individual battery 30, thereby controlling the temperature of the individual battery 30 within a reasonable range.

[0057] Similarly, in operating conditions with high external ambient temperatures (such as summer), the temperature of the heat exchange fluid used is lower. When the temperature of the single cell 30 is too high, the louvered plate 231 is driven to rotate to minimize the flow area of ​​the first flow port 224, reducing the discharge of heat exchange fluid and allowing more heat exchange fluid to remain in the receiving cavity 222, thereby cooling the single cell 30. When the temperature of the single cell 30 is too low, the louvered plate 231 is driven to rotate to maximize the flow area of ​​the first flow port 224, accelerating the discharge of heat exchange fluid. The single cell 30 generates heat during operation, causing its temperature to rise to a reasonable range. When the temperature of the single cell 30 is suitable, the angle of the louvered plate 231 is controlled so that the flow area of ​​the first flow port 224 is adapted to the current temperature of the single cell 30, thereby controlling the temperature of the single cell 30 within a reasonable range.

[0058] Of course, in other embodiments of this application, the receiving cavity 222 can also be connected to the inlet channel 221 through the first flow port 224. In this case, the flow area of ​​the first flow port 224 affects the inlet flow rate of the heat exchange fluid.

[0059] It should be noted that, Figure 8 The illustration demonstrates that each louver 231 is equipped with a linkage 241. Each louver 231 corresponds one-to-one with a linkage 241, and each louver 231 is driven to rotate by its corresponding linkage 241. Each linkage 241 is also linked to a drive component 243 via a corresponding connector 242. Please refer to the accompanying documentation. Figure 9One end of the louver 231 is provided with an integrated rotating shaft 2312, which is rotatably embedded in the box body 21. The other end of the louver 231 is provided with a linkage 241, which is rotatably disposed in the box body 21, so that the louver 231 can rotate relative to the box body 21. Of course, in other embodiments of this application, the number of linkages 241 may be less than the number of louver 231, that is, only some of the louver 231 are provided with linkages 241, and the louver 231 are also linked by a transmission mechanism such as a linkage rod. In this way, the linkage 241 drives the louver 231 directly linked to it to rotate, while the remaining louver 231 are linked through a transmission mechanism, so that all louver 231 can rotate. This is not limited here.

[0060] Please refer to the following: Figure 10 and Figure 11 , Figure 10 This is a structural schematic diagram of one embodiment of the linkage component of this application. Figure 11 This is a schematic diagram of an embodiment of the operation process of the linkage component in this application.

[0061] In one embodiment, the linkage 241 has a linkage hole 2411. One end of the connector 242 is connected to the drive 243, and the other end is rotatably fitted into the linkage hole 2411. The linkage 241 is configured to rotate about a rotation axis O. During the movement of the drive 243, the drive 243 drives the connector 242 to drive each linkage 241 to rotate, while the connector 242 rotates synchronously in the linkage hole 2411.

[0062] Specifically, the linkage hole 2411 is an oblong hole. The linkage hole 2411 extends toward the rotation axis O. During the rotation of the linkage 241, the connecting member 242 can also move synchronously along the linkage hole 2411. The battery pack housing 20 has a first direction (e.g., Figure 8 As indicated by the middle arrow X (the same applies below), each louver 231 is distributed sequentially along the first direction. The driving member 243 is configured to move along the first direction to drive each linkage 241 to rotate.

[0063] like Figure 11 As shown, during the movement of the driving member 243, the driving member 243 moves linearly along the first direction, and the connecting member 242 drives the corresponding linkage member 241 to rotate as the driving member 243 moves. The connecting member 242 rotates synchronously in the linkage hole 2411, and the connecting member 242 also moves synchronously along the linkage hole 2411. Figure 11 The solid line in the middle shows the linkage 241 and the connecting part 242 before the drive component 243 moves. Figure 11 The dashed line shows the linkage 241 and connecting part 242 after the driving component 243 moves. (Example) Figure 8As shown, the driving member 243 moves along the first direction, driving each louver 231 to rotate. At this time, the louver 231 reduces the flow area of ​​the first flow port 224. Meanwhile, the driving member 243 moves in the opposite direction of the first direction, driving each louver 231 to rotate. At this time, the louver 231 increases the flow area of ​​the first flow port 224.

[0064] Of course, in other embodiments of this application, the linkage hole 2411 can also be a circular hole, etc. In this case, the driving member 243 needs to translate along the circumferential direction of the rotation axis O during the movement process, so that the movement trajectory of the driving member 243 matches the movement trajectory of the linkage hole 2411, thereby ensuring that the driving member 243 can drive the connecting member 242 to drive the linkage member 241 to rotate. This is not limited here. Compared with the case where the linkage hole 2411 is a circular hole, the linkage hole 2411 in this embodiment is an oblong hole. It is only necessary to control the driving member 243 to make a simple linear movement, avoiding the need to control the driving member 243 to translate along the circumferential direction of the rotation axis O. This is beneficial to simplifying the control process of the driving member 243 and simplifying the driving assembly 24.

[0065] In one embodiment, the battery pack housing 20 also has a second orientation (e.g., Figure 10 As indicated by the middle arrow Y (the same applies below), the second direction intersects the rotation axis O and also intersects the first direction; preferably, the second direction is perpendicular to the rotation axis O. The linkage 241 includes a connecting portion 2413 and a linkage portion 2414. The connecting portion 2413 is connected to the louvered plate 231 and extends along the rotation axis O. The linkage portion 2414 is connected to the connecting portion 2413 and extends along the second direction; a linkage hole 2411 is formed in the linkage portion 2414. The linkage portion 2414 is connected to the louvered plate 231 through the connecting portion 2413, enabling the louvered plate 231 and the linkage 241 to rotate synchronously.

[0066] Please refer to the following: Figure 12 , Figure 12 yes Figure 9 The diagram shows the structure of region D of the louvered panel.

[0067] In one embodiment, one of the louvered panel 231 and the linkage member 241 is provided with a limiting block 251 and the other is provided with a limiting groove 252. The limiting block 251 is embedded in the limiting groove 252, and the limiting block 251 and the limiting groove 252 cooperate to enable the louvered panel 231 and the linkage member 241 to rotate synchronously.

[0068] Specifically, the louvered panel 231 is provided with a limiting block 251 and a first fixing hole 2311. The limiting block 251 is adjacent to the first fixing hole 2311, and the limiting block 251 is divided into two sections by the first fixing hole 2311. The linkage member 241 is provided with a limiting groove 252 and a second fixing hole 2412. The second fixing hole 2412 passes through at least the connecting portion 2413 of the linkage member 241 along the rotation axis O. Figure 10 An exemplary illustration shows a linkage 2414 connected to one end of a connecting part 2413. A second fixing hole 2412 penetrates both the connecting part 2413 and the linkage 2414. A limiting groove 252 is located at the end of the connecting part 2413 away from the linkage 2414. The limiting groove 252 is adjacent to the second fixing hole 2412 and is divided into two segments by the second fixing hole 2412. Each segment of the limiting block 251 is embedded in the corresponding segment of the limiting groove 252, so that the limiting block 251 and the limiting groove 252 cooperate to allow the louvered plate 231 and the linkage 241 to rotate synchronously. The battery pack housing 20 also includes a fixing member 26, which passes through the first fixing hole 2311 and the second fixing hole 2412 to fix the louvered plate 231 and the linkage 241. The fixing member 26 can be a bolt, screw, or other fastening element.

[0069] Of course, in other embodiments of this application, the louvered plate 231 may be provided with a limiting groove 252 and the linkage 241 may be provided with a limiting block 251, which is not limited here.

[0070] Please continue reading. Figure 8 In one embodiment, the drive assembly 24 further includes a power component 245. The power component 245 is disposed in the housing body 21. Specifically, the power component 245 can be accommodated in the receiving cavity 222, and the power component 245 does not interfere with the single battery 30 and other structural components. A drive gear 2451 is provided at the output end of the power component 245. The drive component 243 is provided with a drive rack 2431, which meshes with the drive gear 2451. The power component 245 drives the drive component 243 to move through the transmission cooperation between the drive rack 2431 and the drive gear 2451.

[0071] Optionally, the power component 245 can be a motor or the like, and is not limited here. Of course, in other embodiments of this application, the power component 245 can also be a cylinder or the like, and the power component 245 directly drives the drive component 243 to move, and is not limited here.

[0072] Please refer to the following: Figure 13 , Figure 13 This is a structural schematic diagram of an embodiment of the guide component of this application.

[0073] In one embodiment, the drive assembly 24 further includes a guide 244 disposed on the housing body 21. The guide 244 is provided with a guide groove 2441, through which the drive member 243 is movably disposed, the guide groove 2441 being used to guide the movement of the drive member 243.

[0074] The number of guide members 244 can be one, two, or more. When the number of guide members 244 is two or more, the guide members 244 are distributed sequentially at intervals along the first direction. Figure 8 An example is shown where the number of guide members 244 is two.

[0075] In summary, this application provides a battery pack housing and a battery pack. The housing body is provided with a receiving cavity for accommodating individual batteries, and the housing body also has a first flow port. The receiving cavity is connected to an inlet channel or an outlet channel through the first flow port. Heat exchange fluid enters the receiving cavity from the inlet channel to exchange heat with the individual batteries, and the heat exchange fluid is discharged through the outlet channel. The driving component of the driving assembly is configured to drive the connecting component to rotate through its own movement, thereby driving the corresponding louvers to rotate through the connecting component to adjust the flow area of ​​the first flow port. By adjusting the flow area of ​​the first flow port, this application regulates the heat exchange process between the individual batteries and the heat exchange fluid, and can maintain a constant temperature for the individual batteries, thereby reducing the risk of problems such as excessively high or low temperatures in the individual batteries.

[0076] The battery pack housing and battery pack provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery pack housing, characterized in that, include: The main body of the box is provided with an inlet channel, a receiving cavity and an outlet channel. The inlet channel, the receiving cavity and the outlet channel are fluidly connected. The receiving cavity is used to receive a single battery cell. The heat exchange fluid enters the receiving cavity from the inlet channel to exchange heat with the single battery cell, and the heat exchange fluid is discharged through the outlet channel. The main body of the box is provided with a first flow port, and the receiving cavity is connected to the inlet channel or the outlet channel through the first flow port; the main body of the box includes a first main body part and a second main body part, the first main body part and the second main body part are stacked, the first main body part surrounds the receiving cavity, the inlet channel and the outlet channel are located between the first main body part and the second main body part, and the first flow port is opened in the first main body part; A louvered panel assembly includes at least two louvers, each of which is rotatably mounted on the box body; as well as The drive assembly includes a linkage, a connector, and a drive component. The louver is provided with the linkage. The connector is linked to the linkage and the drive component respectively. The drive component is configured to drive the connector to rotate through its own movement, thereby driving the corresponding louver to rotate through the linkage to adjust the flow area of ​​the first flow port.

2. The battery pack housing according to claim 1, characterized in that, The box body has a first orientation; The louvers are arranged sequentially along the first direction, and the driving member is configured to move along the first direction to drive the linkage members to rotate.

3. The battery pack housing according to claim 2, characterized in that, The linkage component has a linkage hole, which is an oblong hole. One end of the connector is connected to the drive component, and the other end is rotatably embedded in the linkage hole. The linkage is configured to rotate about a rotation axis.

4. The battery pack housing according to claim 3, characterized in that, The linkage hole extends toward the rotation axis; during the rotation of the linkage member, the connecting member can also move synchronously along the linkage hole.

5. The battery pack housing according to claim 3, characterized in that, The battery pack housing also has a second direction, which intersects the rotation axis and the first direction; The linkage component includes: A connecting portion, connected to the louvered plate, and the connecting portion extending along the axis of rotation; and The linkage part is connected to the connecting part, and the linkage part extends along the second direction, and the linkage hole is formed in the linkage part.

6. The battery pack housing according to claim 1 or 2, characterized in that, One of the louvers and the linkage is provided with a limiting block, and the other is provided with a limiting groove. The limiting block is embedded in the limiting groove, and the limiting block and the limiting groove cooperate to enable the louvers and the linkage to rotate synchronously.

7. The battery pack housing according to claim 6, characterized in that, The louvered panel is provided with the limiting block and the first fixing hole; the linkage is provided with the limiting groove and the second fixing hole; The battery pack housing also includes: A fastener is inserted through the first fixing hole and the second fixing hole to fix the louvered plate to the linkage.

8. The battery pack housing according to claim 1 or 2, characterized in that, The driving component also includes: A guide member is disposed on the main body of the box, and the guide member is provided with a guide groove. The drive member is movably disposed through the guide groove, and the guide groove is used to guide the drive member to move.

9. The battery pack housing according to claim 1 or 2, characterized in that, The driving component also includes: A power component is provided on the main body of the box, and a drive gear is provided at the output end of the power component; The driving component is provided with a driving rack, which meshes with the driving gear. The power component drives the driving component to move through the driving rack and the driving gear.

10. The battery pack housing according to claim 1 or 2, characterized in that, The inlet channel has an inlet, which is located in the second main body, and the heat exchange fluid enters the inlet channel from the inlet. The outflow channel has an outflow port, which is located in the second main body. The heat exchange fluid is discharged through the outflow port, and the receiving cavity is connected to the outflow port through the first flow port. The first main body is provided with an overflow port assembly, the overflow port assembly including at least two second overflow ports, and the receiving cavity is connected to the inlet port through each of the second overflow ports.

11. The battery pack housing according to claim 10, characterized in that... The inlet and the outlet are respectively disposed on opposite sides of the second main body. The second outlets of the outlet assembly are distributed sequentially at intervals along the direction from the inlet to the outlet. The flow area of ​​the second outlet closer to the inlet is smaller than that of the second outlet closer to the outlet.

12. A battery pack, characterized in that, It includes a single battery cell and a battery pack housing as described in any one of claims 1 to 11, wherein the single battery cell is housed in the battery pack housing and is disposed within the housing cavity at a position corresponding to the inlet channel.

Images