Shell of battery assembly, battery assembly and electronic device

Abstract

The utility model discloses a shell of a battery assembly, the battery assembly and an electronic device. A shell of the battery assembly comprises a box body, a cover body and a sealing assembly, the cover body is installed on the box body, the cover body and the box body are suitable for forming a containing cavity, the containing cavity is suitable for containing a battery module, the battery module is in direct contact with a cooling medium, a groove is formed in the periphery of at least one of the box body and the cover body, and at least part of the sealing assembly is arranged in the groove. The box body and the cover body jointly clamp the sealing assembly located in the groove. According to the shell, under the condition that the cooling medium permeates towards the outside of the shell from the joint of the cover body and the box body, the flowing path of the cooling medium can be bent through the arrangement of the groove, so that the flowing path of the cooling medium is prolonged, and the cooling medium can be prevented from flowing out of the shell; and the sealing assembly arranged in the groove can further prevent the cooling medium in the groove from flowing out of the shell. The sealing effect of the shell is good, and the cooling medium in the shell is not prone to leaking out of the shell.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more specifically, to a housing of a battery assembly, a battery assembly, and an electronic device. Background Art

[0002] In recent years, with the accelerated development of the new energy industry, energy storage devices have been more and more widely promoted and applied. Generally, for an energy storage device, such as a battery assembly, when working continuously for a long time, the heat generated by the battery modules in the battery assembly accumulates continuously, resulting in an increase in temperature. When the temperature rises to a certain threshold, the battery modules are prone to thermal runaway, causing safety problems such as fire and explosion. At the same time, the service life of the battery modules will be rapidly shortened. At present, some battery assemblies use immersion cooling to dissipate heat from the battery modules. Specifically, the battery modules are immersed in a cooling medium to directly contact the cooling medium, and the cooling medium can circulate to take out the heat of the battery modules to the outside of the battery assembly and dissipate it. However, currently, the sealing effect of the battery assembly using the immersion cooling technology is poor, and the cooling medium is easy to leak from the battery assembly. Summary of the Utility Model

[0003] Embodiments of the present application provide a housing of a battery assembly, a battery assembly, and an electronic device, which are at least used to solve the problem that the sealing effect of the battery assembly using the immersion cooling technology is poor, and the cooling medium is easy to leak from the battery assembly.

[0004] The housing of the battery assembly according to the embodiments of the present application includes a box body, a cover body, and a sealing assembly. The cover body is installed on the box body. The cover body and the box body are adapted to form a receiving cavity, and the receiving cavity is adapted to receive battery modules. The battery modules are in direct contact with a cooling medium. At least one of the peripheries of the box body and the cover body is provided with a groove, at least a part of the sealing assembly is disposed in the groove, and the box body and the cover body jointly clamp the sealing assembly located in the groove.

[0005] In some embodiments, the top surface of the periphery of the box body is recessed towards the bottom surface to form a first groove. When the cover body is installed on the box body, at least a part of the cover body extends into the first groove. The sealing assembly includes a first sealing member, and the first sealing member is disposed in the first groove. The cover body and the bottom wall of the first groove jointly clamp the first sealing member.

[0006] In some embodiments, the bottom surface of the cover body is recessed toward the top surface to form a second groove. The side wall of the second groove away from the accommodation cavity extends into the first groove, and the side wall of the first groove close to the accommodation cavity extends into the second groove. The second groove communicates with the first groove to form a bent passage. The sealing assembly further includes a second seal, which is disposed in the second groove. The side wall of the first groove close to the accommodation cavity and the top wall of the second groove jointly clamp the second seal, and the side wall of the second groove away from the accommodation cavity and the bottom wall of the first groove jointly clamp the first seal.

[0007] In some embodiments, in the length direction and width direction of the housing, the second groove is closer to the accommodation cavity than the first groove.

[0008] In some embodiments, in the height direction of the housing, the height of the position where the first seal is located is different from the height of the position where the second seal is located.

[0009] In some embodiments, the sealing assembly further includes a third seal, which is disposed outside the periphery of the cover body and on the top surface of the periphery of the box body, and seals the gap between the side wall of the second groove away from the accommodation cavity and the side wall of the first groove away from the accommodation cavity.

[0010] In some embodiments, the box body includes a main body portion and a mounting portion. The mounting portion extends from the periphery of the main body portion away from the accommodation cavity. The first groove is provided in the mounting portion, and a first mounting hole is provided in the bottom wall of the first groove. The cover body is provided with a second mounting hole corresponding to the first mounting hole. The housing further includes a fastener that passes through the second mounting hole and the first mounting hole to connect the cover body and the box body.

[0011] In some embodiments, the housing is provided with a signal line interface and a power line interface. The signal line interface is surrounded by a first convex edge extending from the housing. A signal line connector is installed in the first convex edge, and a first sealant is provided between the signal line connector and the first convex edge.

[0012] In some embodiments, the housing is provided with a signal line interface and a power line interface. The power line interface is surrounded by a second convex edge extending from the housing. A power line connector is installed in the second convex edge, and a second sealant is provided between the power line connector and the second convex edge.

[0013] In some embodiments, the housing is provided with a signal line interface and a power line interface. The signal line interface is surrounded by a first flange extending from the housing. A signal line connector is installed within the first flange, and a first sealant is provided between the signal line connector and the first flange. The power line interface is surrounded by a second flange extending from the housing. A power line connector is installed within the second flange, and a second sealant is provided between the power line connector and the second flange.

[0014] In some embodiments, the box body is provided with an inlet and an outlet. The inlet is used for allowing a cooling medium to enter the housing, and the outlet is used for allowing the cooling medium to flow out of the housing. On a side of the cover body facing the box body, a gas guiding assembly is provided. The gas guiding assembly is used for guiding the gas in the housing to be discharged out of the housing when the cooling medium enters the housing from the inlet.

[0015] In some embodiments, the gas guiding assembly includes a plurality of first guiding strips, a plurality of second guiding strips, and an exhaust valve. The first guiding strips extend along the width direction of the housing. The plurality of first guiding strips are arranged at intervals along the length direction of the housing, and a gas guiding channel is formed between two adjacent first guiding strips. The plurality of second guiding strips are arranged at intervals. The second guiding strips intersect with the first guiding strips, and an exhaust channel is formed between two adjacent second guiding strips. The plurality of gas guiding channels are all communicated with the exhaust channel. The exhaust valve penetrates through the cover body and is communicated with one end of the exhaust channel. Compared with the exhaust valve, the other end of the exhaust channel is closer to the inlet.

[0016] In some embodiments, the second guiding strip is provided with a plurality of guiding openings. Both sides of the exhaust channel are communicated with the gas guiding channels through the guiding openings. Along the direction of gas flow in the exhaust channel, the opening sizes of the plurality of guiding openings on the second guiding strip gradually decrease.

[0017] In some embodiments, in the height direction of the housing, the height of the inlet is lower than the height of the outlet.

[0018] In some embodiments, the height of the housing ranges from [80 mm, 150 mm].

[0019] In some embodiments, the ratio of the length of the housing to the width of the housing ranges from (1.1, 2).

[0020] The battery assembly according to the embodiments of the present application includes the housing and the battery module described in the above embodiments. The battery module is installed within the housing.

[0021] In some embodiments, in the height direction of the housing, the height of the box body is higher than the height of the battery module.

[0022] In some embodiments, the housing is provided with a signal line interface and a power line interface, and the signal line interface and the power line interface are respectively located on two sides of the housing in the width direction; the battery module includes a plurality of battery cells arranged along the length direction of the housing, and two tab ears of each battery cell are respectively located at opposite ends of the battery cell in the length direction, and the length direction of the battery cell is consistent with the width direction of the housing.

[0023] In some embodiments, at least one battery module is provided in the housing, and a plurality of flow channels are formed inside the battery module or between the battery module and the housing in the height direction of the housing, and the flow channels extend along the inlet to outlet direction of the housing; the battery assembly further includes: a first flow deflector, which is installed in the housing and located between the inlet and the battery module, the inlet is communicated with one side of the first flow deflector, and the other side of the first flow deflector is provided with a plurality of layers of communication through holes stratified in the height direction of the housing, and the plurality of layers of communication through holes are respectively communicated with the plurality of flow channels.

[0024] In some embodiments, the flow channels include a first flow channel formed between the battery module and the bottom wall of the box body, a second flow channel formed between the battery module and the cover body, and a third flow channel formed by the gap between adjacent battery modules; the plurality of communication through holes include a first through hole communicated with the first flow channel, a second through hole communicated with the second flow channel, and a third through hole communicated with the third flow channel.

[0025] In some embodiments, at least one battery module is provided in the housing, and a plurality of flow channels are formed inside the battery module or between the battery module and the housing in the height direction of the housing, and the flow channels extend along the inlet to outlet direction of the housing; the battery assembly further includes: a second flow deflector, which is installed in the housing and located between the outlet and the battery module, the outlet is communicated with one side of the second flow deflector, and the other side of the second flow deflector is provided with a plurality of layers of communication through grooves stratified in the height direction of the housing, and the plurality of layers of communication through grooves are respectively communicated with the plurality of flow channels.

[0026] In some embodiments, the circulation channels include a first circulation channel formed between the battery module and the bottom wall of the box body, a second circulation channel formed between the battery module and the cover body, and a third circulation channel formed by the gaps between adjacent battery modules; the plurality of communication grooves include a first groove communicating with the first circulation channel, a second groove communicating with the second circulation channel, and a third groove communicating with the third circulation channel.

[0027] The electronic device according to the embodiment of the present application includes the battery assembly described in the above embodiment.

[0028] In the housing of the battery assembly according to the embodiment of the present application, the battery assembly and the electronic device, at least one of the peripheral edges of the box body and the cover body is provided with a groove, and at least part of the sealing assembly is disposed in the groove. In the case where the cooling medium penetrates from the connection between the cover body and the box body toward the outside of the housing, the provision of the groove can make the circulation path of the cooling medium bend, so as to extend the circulation path of the cooling medium, thereby blocking the cooling medium from flowing out to the outside of the housing. The sealing assembly is used to seal the gap between the box body and the cover body, and the sealing assembly disposed in the groove can further block the cooling medium in the groove from flowing out to the outside of the housing. The sealing effect of the housing of the present application is good, and the cooling medium in the housing is not easily leaked from the housing.

[0029] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0030] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0031] Figure 1 is a perspective schematic view of a battery assembly according to some embodiments of the present application;

[0032] Figure 2 is Figure 1 a schematic cross-sectional view of the battery assembly taken along line II-II;

[0033] Figure 3 is Figure 1 a perspective exploded schematic view of the battery assembly;

[0034] Figure 4 is Figure 1 a perspective schematic view of the battery assembly from another perspective;

[0035] Figure 5 is Figure 4 a perspective schematic view of the cover body in the battery assembly;

[0036] Figure 6 isFigure 4 Schematic cross-sectional view of the housing in the battery assembly;

[0037] Figure 7 is Figure 4 Schematic perspective view of the second deflector in the battery assembly;

[0038] Figure 8 Schematic structural view of the electronic device according to some embodiments of the present application.

[0039] Description of main component symbols:

[0040] 10000, electronic device; 1000, battery assembly; 100, housing; 10, box body; 20, groove; 11, first groove; 111, first mounting hole; 13, passage; 15, accommodation cavity; 16, body part; 17, mounting part; 18, inlet; 19, outlet; 30, cover body; 31, second groove; 33, second mounting hole; 35, air guiding assembly; 351, first guiding strip; 3511, air guiding channel; 353, second guiding strip; 3531, exhaust channel; 3533, guiding port; 355, exhaust valve; 50, sealing assembly; 51, first seal; 53, second seal; 55, third seal; 70, fastener; 80, signal line interface; 81, first flange; 83, signal line connector; 90, power line interface; 91, second flange; 93, power line connector; 95, second blind hole; 300, battery module; 301, battery cell; 500, flow channel; 501, first flow channel; 503, second flow channel; 505, third flow channel; 700, first deflector; 701, communicating through hole; 7011, first through hole; 7013, second through hole; 7015, third through hole; 900, second deflector; 901, communicating through slot; 9011, first through slot; 9013, second through slot; 9015, third through slot. Detailed implementation manners

[0041] To make the above objects, features and advantages of the present application more apparent and understandable, the following detailed description of the specific implementation manners of the present application will be given with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0047] In recent years, with the accelerated development of the new energy industry, energy storage devices have been more and more widely promoted and applied. Generally, for an energy storage device, such as a battery assembly, when it works continuously for a long time, the heat generated by the battery modules in the battery assembly accumulates continuously, resulting in an increase in temperature. When the temperature rises to a certain threshold, the battery modules are prone to thermal runaway, causing safety problems such as fire and explosion. At the same time, the service life of the battery modules will be rapidly shortened. At present, some battery assemblies use immersion cooling to dissipate heat from the battery modules. Specifically, the battery modules are immersed in a cooling medium to be in direct contact with the cooling medium, and the cooling medium can circulate to take the heat of the battery modules out of the battery assembly and dissipate it. However, at present, the sealing effect of the battery assemblies using immersion cooling technology is poor, and the cooling medium is easy to leak out of the battery assembly. To solve this problem, the embodiments of the present application provide a housing 100 of a battery assembly ( Figure 1 as shown), a battery assembly 1000 ( Figure 1 as shown), and an electronic device 10000 ( Figure 8 as shown).

[0048] Please refer to Figure 1 and Figure 2 . The housing 100 of the battery assembly 1000 according to the embodiments of the present application includes a box body 10, a cover body 30, and a sealing assembly 50. The cover body 30 is installed on the box body 10. The cover body 30 and the box body 10 are adapted to form a receiving cavity 15 for receiving the battery modules 300. The battery modules 300 are in direct contact with the cooling medium. At least one of the peripheries of the box body 10 and the cover body 30 is provided with a groove 20, at least a part of the sealing assembly 50 is disposed in the groove 20, and the box body 10 and the cover body 30 jointly clamp the sealing assembly 50 located in the groove 20.

[0049] Specifically, the battery assembly 1000 is a structure for storing electrical energy and capable of supplying power to other components. The battery assembly 1000 can be a battery pack or a battery module. The battery assembly 1000 in the present application is a battery pack. The battery assembly 1000 includes a housing 100 and battery modules 300, and the battery modules 300 are installed in the housing 100. The battery modules 300 can be battery cell modules or batteries, and the battery modules 300 can store electrical energy and supply power to other components.

[0050] The material of the housing 100 includes metals and non-metals. Among them, the metal material can be but is not limited to stainless steel or aluminum alloy, etc. The non-metal material includes composite non-metal materials. Exemplarily, the composite non-metal material can be polyphenylene ether reinforced composite material (containing 20% glass fiber) (PPE+GF20). When the material of the housing 100 is metal, the housing 100 has high strength. When the material of the housing 100 is composite non-metal, the housing 100 is lighter in weight, which is beneficial to the lightweight design of the housing 100.

[0051] Please refer to Figure 1 , in some embodiments, the value range of the height H of the housing 100 is [80mm, 150mm]. For example, the height H of the housing 100 can be 80mm, 94mm, 103mm, 114mm, 125mm, 129mm, 137mm, 141mm, 148mm or 150mm, etc. At this time, when multiple battery assemblies 1000 are placed in a container, the volume utilization rate inside the container can be improved. That is, when the volume of the container is fixed (for example, the container is a 20-foot container or a 40-foot container, etc.), as many battery assemblies 1000 as possible can be loaded in the container, and the waste of internal space in the container can be avoided as much as possible. At the same time, the volume utilization rate inside the housing 100 can also be improved, and more battery modules 300 can be loaded inside the housing 100. When the height H of the housing 100 is less than 80mm or the height H of the housing 100 is greater than 150mm, the volume utilization rate inside the container is relatively low. That is, when the size of the container is fixed, the number of battery assemblies 1000 that the container can load is less, and there will still be a certain amount of space waste inside the container after loading a certain number of battery assemblies 1000.

[0052] In some embodiments, the ratio of the length D to the width W of the housing 100 ranges from (1.1, 2), that is, the relationship between the length D and the width W of the housing 100 satisfies: 1.1W < D < 2W. Preferably, the height H of the housing 100 is less than the length D and the width W of the housing 100. At this time, when multiple battery modules 1000 are placed in a container, the volume utilization rate inside the container can be improved. That is, when the volume of the container is fixed (for example, the container is a 20-foot container or a 40-foot container, etc.), as many battery modules 1000 as possible can be loaded in the container, and the waste of internal space in the container can be minimized. At the same time, the volume utilization rate inside the housing 100 can also be improved, and more battery modules 300 can be loaded inside the housing 100. When the relationship between the length D and the width W of the housing 100 does not satisfy 1.1W < D < 2W, and the height H of the housing 100 is greater than or the length D and / or the width W of the housing 100, the volume utilization rate inside the container is relatively low. That is, when the size of the container is fixed, the number of battery modules 1000 that can be loaded in the container is small, and there will still be some waste of space inside the container after loading a certain number of battery modules 1000.

[0053] Please refer to Figures 1 to 3 , the cover 30 is detachably mounted on the box body 10, wherein the detachable mounting includes but is not limited to threaded connection, screw connection, snap connection, etc. In this application, the cover 30 and the box body 10 are in threaded connection. The cover 30 and the box body 10 together form a receiving cavity 15 for mounting the battery module 300 and other components of the battery module 1000 therein, and the receiving cavity 15 is also used for loading the cooling medium therein. When the battery module 300 is loaded into the housing 100, the cover 30 needs to be opened first, the battery module 300 is loaded into the box body 10 from the open end of the box body 10, and then the cover 30 is mounted on the box body 10. The combination of the cover 30 and the box body 10 can protect the internal battery module 300 on the one hand, and can prevent the performance of the battery module 300 from being affected by external moisture and dust, etc. On the other hand, when the cooling medium enters the receiving cavity 15, the tight connection between the cover 30 and the box body 10 can prevent the cooling medium inside the receiving cavity 15 from leaking out of the housing 100.

[0054] The sealing assembly 50 is a structure for sealing the gap between the cover body 30 and the box body 10, to prevent the cooling medium in the accommodation cavity 15 from flowing out through the gap between the cover body 30 and the box body 10. The groove 20 is a structure for the sealing assembly 50 to be installed therein. When at least part of the sealing assembly 50 is located within the groove 20, the cooling medium first enters the groove 20 and is then blocked by the sealing assembly 50 within the groove 20, thereby preventing the cooling medium from flowing out of the housing 100. When the cooling medium penetrates from the connection between the cover body 30 and the box body 10 towards the outside of the housing 100, the provision of the groove 20 can make the flow path 13 of the cooling medium become bent, so as to extend the flow path 13 of the cooling medium, thereby blocking the outflow of the cooling medium. By arranging the sealing assembly 50 in the groove 20, the sealing assembly 50 is used to prevent the cooling medium entering the groove 20 from flowing out of the housing 100, thereby further blocking the outflow of the coolant, and the sealing effect of the housing 100 is relatively good.

[0055] In one embodiment, a groove 20 with an opening facing the cover body 30 is provided at the periphery of the box body 10. At this time, the structure of the cover body 30 is relatively simple and the processing of the cover body 30 is relatively convenient. When the cover body 30 is installed on the box body 10, the cover body 30 and the box body 10 jointly clamp the sealing assembly 50, and the sealing assembly 50 is fixed relative to the box body 10, so that the sealing assembly 50 can effectively seal the gap between the cover body 30 and the box body 10. Moreover, after the cooling medium enters the groove 20, due to its own gravity, the cooling medium will be stored at the bottom of the groove 20, thereby further preventing the cooling medium from flowing out of the housing 100.

[0056] In another embodiment, a groove 20 with an opening facing the box body 10 is provided at the periphery of the cover body 30. At this time, the structure of the box body 10 is relatively simple and the processing of the box body 10 is relatively convenient. When the cover body 30 is installed on the box body 10, the cover body 30 and the box body 10 jointly clamp the sealing assembly 50, and the sealing assembly 50 is fixed relative to the box body 10, so that the sealing assembly 50 can effectively seal the gap between the cover body 30 and the box body 10. Also, in the height direction Z of the housing 100, the top of the groove 20 is higher than the top of the box body 10. When the cooling medium penetrates from the connection between the cover body 30 and the box body 10 towards the outside of the housing 100, the cooling medium can be received within the groove 20, thereby further preventing the cooling medium from flowing out of the housing 100.

[0057] In still another embodiment, grooves 20 are provided on the peripheries of both the box body 10 and the cover body 30. The periphery of the box body 10 is provided with a groove 20 with an opening facing the cover body 30, and the periphery of the cover body 30 is provided with a groove 20 with an opening facing the box body 10. At this time, the cooperation between the groove 20 and the sealing assembly 50 can effectively prevent the cooling medium from flowing out of the housing 100, and the sealing effect of the housing 100 is relatively good. In the embodiment of the present application, grooves 20 are provided on the peripheries of both the box body 10 and the cover body 30.

[0058] In the housing 100 of the embodiment of the present application, a groove 20 is provided on the periphery of at least one of the box body 10 and the cover body 30, and at least a part of the sealing assembly 50 is arranged in the groove 20. In the case where the cooling medium penetrates from the connection between the cover body 30 and the box body 10 toward the outside of the housing 100, the provision of the groove 20 can make the flow path 13 of the cooling medium become bent to extend the flow path 13 of the cooling medium, so as to prevent the cooling medium from flowing out of the housing 100. The sealing assembly 50 is used to seal the gap between the box body 10 and the cover body 30, and the sealing assembly 50 arranged in the groove 20 can further prevent the cooling medium in the groove 20 from flowing out of the housing 100. The sealing effect of the housing 100 of the present application is relatively good, and the cooling medium in the housing 100 is not easily leaked from the housing 100.

[0059] The housing 100 will be further described below with reference to the accompanying drawings.

[0060] Please refer to Figure 2 and Figure 3 , in some embodiments, the top surface of the periphery of the box body 10 is recessed in the direction from the top surface to the bottom surface to form a first groove 11. When the cover body 30 is installed on the box body 10, at least a part of the cover body 30 extends into the first groove 11; the sealing assembly 50 includes a first seal 51, and the first seal 51 is arranged in the first groove 11, and the cover body 30 and the bottom wall of the first groove 11 jointly clamp the first seal 51.

[0061] Among them, the opening of the first groove 11 faces the cover body 30, and the first groove 11 is used for installing the first seal 51 therein. On the one hand, the first groove 11 is used to bend and extend the flow path of the cooling medium in the case where the cooling medium penetrates from the connection between the cover body 30 and the box body 10 toward the outside of the housing 100, so as to prevent the cooling medium from flowing out of the housing 100 through the gap between the box body 10 and the cover body 30. On the other hand, in the case where the cooling medium penetrates outward from the connection between the cover body 30 and the box body 10, after the cooling medium enters the first groove 11, due to its own gravity, the cooling medium will be present at the bottom of the first groove 11, so as to further prevent the cooling medium from flowing out of the housing 100.

[0062] The first seal 51 is used to seal the gap between the cover body 30 and the box body 10. The first seal 51 is used to prevent the cooling medium entering the first groove 11 from flowing out through the gap between the box body 10 and the cover body 30, so as to improve the sealing effect of the housing 100. The material of the first seal 51 can be but is not limited to rubber or silica gel, etc. Among them, rubber includes silicone rubber, neoprene, nitrile rubber, butyl rubber, etc. After the first seal 51 is installed in the first groove 11, the cover body 30 is then installed on the box body 10. At least part of the cover body 30 extends into the first groove 11, and the cover body 30 and the bottom wall of the first groove 11 jointly clamp the first seal 51, so that the first seal 51 can be fixed relative to the box body 10. The first seal 51 has a good sealing performance for the gap between the cover body 30 and the box body 10, and the first seal 51 does not need to be fixed by other components, so the structure of the housing 100 is relatively simple and the installation of the housing 100 is relatively convenient.

[0063] Please refer to Figure 2 and Figure 3 Further, in some embodiments, the bottom surface of the peripheral edge of the cover body 30 is recessed toward the top surface to form a second groove 31. The side wall of the second groove 31 far from the accommodation cavity 15 extends into the first groove 11, and the side wall of the first groove 11 close to the accommodation cavity 15 extends into the second groove 31. The second groove 31 communicates with the first groove 11 to form a bent passage 13. The sealing assembly 50 further includes a second seal 53. The second seal 53 is disposed in the second groove 31. The side wall of the first groove 11 close to the accommodation cavity 15 and the top wall of the second groove 31 jointly clamp the second seal 53, and the side wall of the second groove 31 far from the accommodation cavity 15 and the bottom wall of the first groove 11 jointly clamp the first seal 51.

[0064] Wherein, the opening of the second groove 31 faces the box body 10, and the second groove 31 is used for installing the second seal 53 therein. On the one hand, when the cooling medium penetrates from the connection between the cover body 30 and the box body 10 toward the outside of the housing 100, the second groove 31 is used to further bend and extend the flow path of the cooling medium to block the cooling medium from flowing out through the gap between the box body 10 and the cover body 30. On the other hand, when the cooling medium penetrates outward from the connection between the cover body 30 and the box body 10, the cooling medium can be received in the second groove 31, so as to further prevent the cooling medium from flowing out of the housing 100.

[0065] The second seal 53 is used to seal the gap between the cover body 30 and the box body 10 to further prevent the cooling medium from flowing out of the gap between the box body 10 and the cover body 30. The material of the second seal 53 can be but is not limited to rubber or silica gel, etc. Among them, rubber includes silicone rubber, neoprene, nitrile rubber, butyl rubber, etc. After the first seal 51 is installed in the first groove 11 and the second seal 53 is installed in the second groove 31, the cover body 30 is then installed on the box body 10. At least a part of the box body 10 extends into the second groove 31, and the box body 10 and the top wall of the second groove 31 jointly clamp the second seal 53, so that the second seal 53 can be fixed relative to the box body 10. The second seal 53 has a good sealing performance for the gap between the cover body 30 and the box body 10, and the second seal 53 does not need to be fixed by other components, and the structure of the housing 100 is relatively simple, and the installation of the housing 100 is relatively simple.

[0066] When the second groove 31 and the first groove 11 communicate, on the plane formed by the width direction of the housing 100 and the length direction X of the housing 100, the projection of the second groove 31 is connected or at least partially overlapped with the projection of the first groove 11, that is, in the height direction Z of the housing 100, the second groove 31 and the first groove 11 do not completely correspond.

[0067] When the first groove 11 is provided on the box body 10, the second groove 31 is provided on the cover body 30, the first seal 51 is provided in the first groove 11, and the second seal 53 is provided in the second groove 31, the first groove 11 and the second groove 31 can form a bent passage 13. The flow of the cooling medium in the bent passage 13 is relatively difficult, and the flow path 13 is relatively long, so as to prevent the cooling medium from flowing out of the housing 100. Moreover, under the double sealing of the first seal 51 and the second seal 53, the sealing effect between the cover body 30 and the box body 10 is good, and it can further prevent the cooling medium from flowing out of the housing 100.

[0068] Please refer to Figure 2 and Figure 3 , in some embodiments, in the length direction X and the width direction Y of the housing 100, the second groove 31 is closer to the accommodation cavity 15 than the first groove 11.

[0069] In the case where the cooling medium penetrates outward from the connection between the cover body 30 and the box body 10, the cooling medium first flows into the second groove 31. Part of the cooling medium is received in the second groove 31 and is blocked by the second seal 53, so that less cooling medium flows into the first groove 11 from the second groove 31. After this small amount of cooling medium flows into the first groove 11, the cooling medium is stored in the first groove 11 and is blocked by the first seal 51. After the cooling medium passes through the second groove 31, the second seal 53, the first groove 11 and the first seal 51, the amount of the cooling medium leaking out between the box body 10 and the cover body 30 is very small, and can even be zero.

[0070] In some embodiments, in the height direction Z of the housing 10, the height of the position where the first seal 51 is located is different from the height of the position where the second seal 53 is located. The height of the position where the second seal 53 of the present application is located is higher than the height of the position where the first seal 51 is located. When the position of the second seal 53 is relatively high, the sealing effect of the second seal 53 on the cooling medium is better, and it is difficult for the cooling medium to enter the first groove 11 through the second seal 53.

[0071] Please continue to refer to Figure 2 and Figure 3 Furthermore, in some embodiments, the sealing assembly 50 further includes a third seal 55. The third seal 55 is disposed on the outer side of the periphery of the cover body 30 and the top surface of the periphery of the box body 10, and seals the gap between the side wall of the second groove 31 far from the accommodation cavity 15 and the side wall of the first groove 11 far from the accommodation cavity 31.

[0072] Specifically, when the side wall of the second groove 31 far from the accommodation cavity 15 extends into the first groove 11 to clamp the first seal 51, there will be a gap between the side wall of the second groove 31 far from the accommodation cavity 15 and the side wall of the first groove 11 far from the accommodation cavity 15. The cooling medium that has penetrated through the first seal 51 may flow out of the housing 100 through this gap. The third seal 55 is used to seal the gap between the side wall of the second groove 31 far from the accommodation cavity 15 and the side wall of the first groove 11 far from the accommodation cavity 15. Since the amount of the cooling medium that penetrates into the gap through the first seal 51 is very small after the cooling medium passes through the second groove 31, the second seal 53, the first groove 11 and the first seal 51, this small amount of cooling medium can be blocked by the third seal 55, so that the cooling medium cannot flow out of the housing 100, and the sealing effect of the housing 100 is better.

[0073] The third seal 55 can be sealant. After the cover body 30 is connected to the box body 10, sealant is applied between the outer side of the peripheral edge of the cover body 30 and the top surface of the peripheral edge of the box body 10 to form further sealing between the cover body 30 and the box body 10. The materials of the sealant include but are not limited to silicone, polyurethane, acrylate, polysulfide, etc.

[0074] When a first groove 11 is provided on the box body 10, a second groove 31 is provided on the cover body 30, the first seal 51 is arranged in the first groove 11, and the second seal 53 is arranged in the second groove 31, the first groove 11 and the second groove 31 can form a bent passage 13. The flow of the cooling medium in the bent passage 13 is relatively difficult, and the flow path 13 is relatively long, so as to block the cooling medium from flowing out of the housing 100. Moreover, under the triple sealing of the first seal 51, the second seal 53 and the third seal 55, the sealing effect between the cover body 30 and the box body 10 is better, and almost no cooling medium can flow out of the housing 100 from the gap between the cover body 30 and the box body 10. The sealing effect of the housing 100 is good, which can avoid the problem of the cooling medium leaking from the housing 100.

[0075] Please refer to Figure 2 and Figure 3 , in some embodiments, the box body 10 includes a main body portion 16 and a mounting portion 17. The mounting portion 17 extends from the peripheral edge of the main body portion 16 in a direction away from the accommodation cavity 15. The mounting portion 17 is provided with a first groove 11, and a first mounting hole 111 is provided on the bottom wall of the first groove 11; the cover body 30 is provided with a second mounting hole 33, and the second mounting hole 33 corresponds to the first mounting hole 111; the housing 100 further includes a fastener 70, and the fastener 70 passes through the second mounting hole 33 and the first mounting hole 111 to connect the cover body 30 and the box body 10.

[0076] The main body portion 16 and the mounting portion 17 can be an integral structure or a split structure. The main body portion 16 is used to load the battery module 300 and other components of the battery assembly 1000, and the mounting portion 17 is used to mount the first seal 51 and to connect with the cover body 30. The main body portion 16 and the mounting portion 17 together form the box body 10 with a flange structure.

[0077] The fastener 70 is used to tightly connect the box body 10 and the cover body 30, so that the first seal 51 can be firmly clamped by the box body 10 and the cover body 30, the sealing effect of the first seal 51 is good, the second seal 53 can be firmly clamped by the box body 10 and the cover body 30, the sealing effect of the second seal 53 is good, and the third seal 55 can be firmly connected to the outer side of the peripheral edge of the cover body 30 and the top surface of the peripheral edge of the box body 10, and the sealing effect of the third seal 55 is good.

[0078] The fastener 70 of the present application is a screw, which passes through the second mounting hole 33, the first seal 51 and the first mounting hole 111 to ensure the stable installation of the first seal 51, the second seal 53 and the third seal 55, so that the first seal 51, the second seal 53 and the third seal 55 can effectively seal the gap between the cover body 30 and the box body 10, and prevent the cooling medium from leaking out of the housing 100.

[0079] Please refer to Figure 1 and Figure 3 , in some embodiments, the housing 100 is provided with a signal line interface 80 and a power line interface 90. The signal line interface 80 is surrounded by a first flange 81 extending from the housing 100. The signal line connector 83 is installed in the first flange 81. A first sealant is provided between the signal line connector 83 and the first flange 81. The power line interface 90 is surrounded by a second flange 91 extending from the housing 100. The power line connector 93 is installed in the second flange 91. A second sealant is provided between the power line connector 93 and the second flange 91.

[0080] The signal line connector 83 is installed in the signal line interface 80 and is used to connect to the battery module 300 inside the housing 100. The first sealant is used to seal the gap between the signal line connector 83 and the first flange 81, which can prevent the cooling medium in the housing 100 from leaking from the installation interface of the signal line connector 83. The housing 100 is also provided with a first blind hole, and the first flange 81 surrounds the first blind hole. While fixing the signal line connector 83, the first blind hole can also prevent the cooling medium in the housing 100 from flowing out.

[0081] The power line connector 93 is installed in the power line interface 90 and is used to connect to the positive and negative electrodes of the battery module 300 inside the housing 100. The second sealant is used to seal the gap between the power line connector 93 and the second flange 91, which can prevent the cooling medium inside the housing 100 from leaking from the installation interface of the power line connector 93. The housing 100 is also provided with a second blind hole 95, and the second flange 91 surrounds the second blind hole 95. While fixing the power line connector 93, the second blind hole 95 can also prevent the cooling medium in the housing 100 from flowing out.

[0082] Please refer to Figures 3 to 5 , in some embodiments, the box body 10 is provided with an inlet 18 and an outlet 19. The inlet 18 is used for the cooling medium to enter the housing 100, and the outlet 19 is used for the cooling medium to flow out of the housing 100; on the side of the cover body 30 facing the box body 10, a gas guiding assembly 35 is provided, and the gas guiding assembly 35 is used to guide the gas in the housing 100 to be discharged outside the housing 100 when the cooling medium enters the housing 100 from the inlet 18.

[0083] Before injecting the cooling medium into the housing 100, an external device extracts the gas inside the housing 100 through the outlet 19 to keep the inside of the housing 100 in a vacuum state. However, during the evacuation process, the air inside the housing 100 may not be completely exhausted. At this time, when the cooling medium enters the housing 100 from the inlet 18, if the remaining air inside the housing 100 cannot be discharged, the cooling medium cannot fill the housing 100, so that the cooling medium may not completely cover the battery module 300, and the cooling effect of the cooling medium on the battery module 300 is poor. In this application, a gas guiding assembly 35 is provided on the side of the cover 30 facing the box body 10. While the cooling medium enters the housing 100, the gas inside the housing 100 can be guided to be discharged outside the housing 100, so that the cooling medium can fill the inside of the housing 100, the cooling medium can completely cover the battery module 300, and the cooling effect of the cooling medium on the battery module 300 is good.

[0084] Please refer to Figure 5 , in some embodiments, the gas guiding assembly 35 includes a plurality of first guiding strips 351, a plurality of second guiding strips 353 and an exhaust valve 355. The first guiding strips 351 extend along the width direction of the housing 100, and the plurality of first guiding strips 351 are arranged at intervals along the length direction X of the housing 100. An air guiding channel 3511 is formed between two adjacent first guiding strips 351. The plurality of second guiding strips 353 are arranged at intervals, the second guiding strips 353 intersect with the first guiding strips 351, an exhaust channel 3531 is formed between two adjacent second guiding strips 353, and the plurality of air guiding channels 3511 are all communicated with the exhaust channel 3531. The exhaust valve 355 penetrates through the cover 30 and is communicated with one end of the exhaust channel 3531. Compared with the exhaust valve 355, the other end of the exhaust channel 3531 is closer to the inlet 18.

[0085] Specifically, the first guiding strip 351 is used to guide the gas inside the housing 100 into the exhaust channel 3531, and the second guiding strip 353 is used to guide the gas to be discharged from the exhaust valve 355. The number of the first guiding strips 351 can be, but is not limited to, 2, 3, 4, 5 or more. The first guiding strip 351 can be an integral structure or a split structure with the cover 30. When the first guiding strip 351 is an integral structure with the cover 30, the first guiding strip 351 extends from the side of the cover 30 facing the box body 10. When the first guiding strip 351 is a split structure with the cover 30, the connection manner between the first guiding strip 351 and the cover 30 can be, but is not limited to, clamping, interference fit, welding or gluing, etc.

[0086] The number of the second flow guiding bars 353 may be, but is not limited to, 2, 3, 4, 5 or more. The second flow guiding bars 353 may be of an integral structure or a split structure with the cover body 30. When the second flow guiding bars 353 and the cover body 30 are of an integral structure, the second flow guiding bars 353 extend from the side of the cover body 30 facing the box body 10. When the second flow guiding bars 353 and the cover body 30 are of a split structure, the connection manner between the second flow guiding bars 353 and the cover body 30 may be, but is not limited to, snap fit, interference fit, welding or gluing, etc. The number of the second flow guiding bars 353 in the present application is 2, and the two second flow guiding bars 353 are arranged at intervals to form an exhaust passage 3531. One end of the exhaust passage 3531 is close to the inlet 18, and the other end is communicated with the exhaust valve 355.

[0087] The inlet 18 and the outlet 19 are respectively arranged at opposite ends of the housing 100 in the length direction X, and the position of the exhaust valve 355 is close to the outlet 19. When the cooling medium enters the housing 100 from the inlet 18, the flow direction of the cooling medium is from the inlet 18 to the outlet 19. During the flowing process, the cooling medium can push the gas in the air guiding passage 3511 into the exhaust passage 3531 and discharge it to the outside of the housing 100 through the exhaust passage 3531 from the exhaust valve 355.

[0088] Please refer to Figure 5 , in some embodiments, the second flow guiding bars 353 are provided with a plurality of flow guiding openings 3533. Both sides of the exhaust passage 3531 are communicated with the air guiding passage 3511 through the flow guiding openings 3533. Along the flowing direction of the gas in the exhaust passage 3531, the opening sizes of the plurality of flow guiding openings 3533 on the second flow guiding bars 353 gradually decrease.

[0089] The number of the flow guiding openings 3533 is the same as that of the flow guiding channels, so that the flow guiding openings 3533 can guide the gas in each flow guiding channel into the exhaust passage 3531. Along the direction from the inlet 18 to the outlet 19, the opening sizes of the plurality of flow guiding openings 3533 gradually decrease. The opening size of the flow guiding opening 3533 at the position close to the inlet 18 is larger, and the gas in the flow guiding channel can quickly enter the exhaust passage 3531 and be discharged from the exhaust valve 355 through the exhaust passage 3531, so that the gas in the housing 100 can be quickly discharged to the outside of the housing 100. The opening size of the flow guiding opening 3533 at the position close to the outlet 19 gradually decreases, that is, the opening size of the flow guiding opening 3533 close to the exhaust valve 355 gradually decreases, so that the gas in the flow guiding channel close to the exhaust valve 355 enters the exhaust passage 3531 at a slower speed, and it can be avoided that a large amount of gas in the flow guiding channel close to the exhaust valve 355 enters the exhaust passage 3531, so as to prevent the gas in the exhaust passage 3531 from colliding with each other and affecting the exhaust.

[0090] Please refer toFigures 2 to 4 , in some embodiments, in the height direction Z of the housing 100, the height of the inlet 18 is lower than the height of the outlet 19. Wherein, when the height of the inlet 18 is lower, the cooling medium enters the housing 100 from the inlet 18, which can push the gas in the housing 100 into the air guide channel 3511 at the top end of the housing 100, facilitating the discharge of the gas in the housing 100. When the height of the outlet 19 is higher, when the cooling medium enters the housing 100, the cooling medium is not easily discharged from the housing 100. Preferably, the outlet 19 can be arranged at a position near the top of the housing 100, so that after the cooling medium enters the housing 100, the cooling medium can almost fill the housing 100 and then be discharged out of the housing 100 through the outlet 19. At this time, the soaking effect of the cooling medium on the battery module 300 in the housing 100 is better, and the cooling medium can effectively take out the heat of the battery module 300 to the outside of the housing 100.

[0091] Please refer to Figure 1 and Figure 2 , the battery assembly 1000 of the embodiment of the present application includes the housing 100 and the battery module 300 of the above embodiment, and the battery module 300 is installed in the housing 100.

[0092] In the battery assembly 1000 of the embodiment of the present application, at least one of the peripheries of the box body 10 and the cover body 30 is provided with a groove, and at least a part of the sealing assembly 50 is arranged in the groove. When the cooling medium penetrates from the connection between the cover body 30 and the box body 10 towards the outside of the housing 100, the arrangement of the groove can make the flow path 13 of the cooling medium become bent to extend the flow path 13 of the cooling medium, so as to block the cooling medium from flowing out to the outside of the housing 100. The sealing assembly 50 is used to seal the gap between the box body 10 and the cover body 30, and the sealing assembly 50 arranged in the groove can further block the cooling medium in the groove from flowing out to the outside of the housing 100. The sealing effect of the housing 100 of the present application is good, and the cooling medium in the housing 100 is not easily leaked from the housing 100.

[0093] Please refer to Figure 2 , in some embodiments, in the height direction Z of the housing 100, the height of the box body 10 is higher than the height of the battery module 300. At this time, after the cooling medium completely covers the battery module 300, even if the cover body 30 is not connected to the box body 10, the cooling medium liquid is not easily overflowed from the box body 10. And, when the components inside the box body 10 need to be maintained, only the cover body 30 needs to be opened, and there is no need to pump out the cooling medium in the box body 10. The maintenance of the components inside the box body 10 is relatively simple, and at the same time, the cooling medium in the box body 10 will not overflow from the box body 10 to affect the heat dissipation effect of the battery module 300.

[0094] Please refer to Figure 1 andFigure 3 , in some embodiments, the signal line interface 80 and the power line interface 90 are respectively located on two sides of the housing 100 in the width direction; the battery module 300 includes a plurality of battery cells 301 arranged along the length direction X of the housing 100, and two tab ears of the battery cell 301 are respectively located at opposite ends of the battery cell 301 in the length direction, and the length direction of the battery cell 301 is consistent with the width direction of the housing 100.

[0095] The two tab ears of the battery cell 301 respectively correspond to the signal line interface 80 and the power line interface 90, which facilitates the signal lines such as the temperature, current and voltage of the battery cell 301 to be directly connected to the signal line connector 83 installed on the signal line interface 80, and also facilitates the power lines of the positive and negative electrodes of the battery cell 301 to be directly connected to the power line connector 93 installed on the power line interface.

[0096] Please refer to Figure 2 , in some embodiments, at least one battery module 300 is provided in the housing 100, and a plurality of flow channels 500 are formed in layers in the height direction Z of the housing 100 inside the battery module 300 or between the battery module 300 and the housing 100, and the flow channels 500 extend along the direction from the inlet 18 to the outlet 19 of the housing 100.

[0097] Among them, the flow channel 500 is a structure for allowing a cooling medium to flow therein. In one embodiment, the housing 100 includes one battery module 300. At this time, in the height direction Z of the housing 100, a flow channel 500 is formed between the upper surface of the battery module 300 and the cover 30, and another flow channel 500 is formed between the lower surface of the battery module 300 and the bottom wall of the box body 10. In another embodiment, the housing 100 includes a plurality of battery modules 300, and the plurality of battery modules 300 are stacked in sequence in the height direction. At this time, in the height direction Z of the housing 100, a flow channel 500 is formed between the upper surface of the uppermost battery module 300 and the cover 30, a flow channel 500 is formed between the lower surface of the lowermost battery module 300 and the bottom wall of the box body 10, and a flow channel 500 is also formed between two adjacent battery modules 300.

[0098] In the current battery assembly 1000, the cooling medium can only flow through a flow channel (S-shaped channel) to dissipate heat from the battery module 300. In this application, the cooling medium entering the housing 100 from the inlet 18 can flow through multiple flow channels 500 to dissipate heat from the battery module 300. Compared with the current battery assembly 1000, the cooling medium in this application has a shorter flow path in the flow channel 500, so that the cooling medium can effectively dissipate heat from the battery module 300, and the temperature difference between the battery cells 301 near the inlet 18 and the battery cells 301 near the outlet 19 is smaller, and the heat dissipation of the cooling medium to the battery module 300 is more uniform.

[0099] Please refer to Figure 2 , Figure 3 and Figure 6 , in some embodiments, the battery assembly 1000 further includes a first deflector 700, which is installed in the housing 100 and located between the inlet 18 and the battery module 300. The inlet 18 is communicated with one side of the first deflector 700, and the other side of the first deflector 700 is provided with a plurality of layers of communication through holes 701 stratified in the height direction Z of the housing 100, and the plurality of layers of communication through holes 701 are respectively communicated with the plurality of flow channels 500.

[0100] Specifically, in some embodiments, the flow channel 500 includes a first flow channel 501 formed between the battery module 300 and the bottom wall of the box body 10, a second flow channel 503 formed between the battery module 300 and the cover body 30, and a third flow channel 505 formed by the gap between adjacent battery modules 300; the plurality of communication through holes 701 include a first through hole 7011 communicated with the first flow channel 501, a second through hole 7013 communicated with the second flow channel 503, and a third through hole 7015 communicated with the third flow channel 505.

[0101] When the number of battery modules 300 is two, the number of the third flow channels 505 is one. When the number of battery modules 300 is three, the number of the third flow channels 505 is two. When the number of battery modules 300 is four, the number of the third flow channels 505 is three. When the number of battery modules 300 is n, the number of the third flow channels 505 is n - 1.

[0102] The first flow deflector 700 is used to divide the cooling medium entering the housing 100 from the inlet 18, so that the cooling medium can enter the first flow channel 501, the second flow channel 503, and the third flow channel 505 respectively. The flow paths of the cooling medium in the first flow channel 501, the second flow channel 503, and the third flow channel 505 are all short, so that the cooling effect of the cooling medium on the battery module 300 is better. The cooling medium can quickly take out the heat of the battery module 300 to the outside of the housing 100, so that the battery module 300 can be quickly cooled. At the same time, the temperature difference between multiple cells in the battery module 300 is also small.

[0103] In the height direction Z of the housing 100, the height of the first through hole 7011 can be the same as the height of the first flow channel 501, the height of the second through hole 7013 can be the same as the height of the second flow channel 503, and the height of the third through hole 7015 can be the same as the height of the third flow channel 505. Thus, the cooling medium entering from the inlet 18 can directly enter the first flow channel 501 through the first through hole 7011, the cooling medium can directly enter the second flow channel 503 through the second through hole 7013, and the cooling medium can directly enter the third flow channel 505 through the third through hole 7015.

[0104] Please refer to Figure 2 、 Figure 3 and Figure 7 Furthermore, in some embodiments, the battery assembly 1000 further includes a second flow deflector 900. The second flow deflector 900 is installed in the housing 100 and is located between the outlet 19 and the battery module 300. The outlet 19 is communicated with one side of the second flow deflector 900. The other side of the second flow deflector 900 is provided with a plurality of layers of communicating grooves 901 that are stratified in the height direction Z of the housing 100. The plurality of layers of communicating grooves 901 are respectively and correspondingly communicated with the plurality of flow channels 500.

[0105] Specifically, in some embodiments, the flow channel 500 includes a first flow channel 501 formed between the battery module 300 and the bottom wall of the box body 10, a second flow channel 503 formed between the battery module 300 and the cover body 30, and a third flow channel 505 formed by the gap between adjacent battery modules 300; the plurality of communicating grooves 901 include a first through groove 9011 communicated with the first flow channel 501, a second through groove 9013 communicated with the second flow channel 503, and a third through groove 9015 communicated with the third flow channel 505.

[0106] The second flow guide 900 is used to collect the cooling medium in the first flow channel 501, the second flow channel 503, and the third flow channel 505, so that the cooling medium flows out of the housing 100 from the outlet 19. After the cooling medium flows through the first through hole 7011 and the first flow channel 501, it passes through the first through groove 9011 and flows out from the outlet 19. After the cooling medium flows through the second through hole 7013 and the second flow channel 503, it passes through the second through groove 9013 and flows out from the outlet 19. After the cooling medium flows through the third through hole 7015 and the third flow channel 505, it passes through the third through groove 9015 and flows out from the outlet 19.

[0107] In the height direction Z of the housing 100, the height of the first through groove 9011 can be the same as the height of the first flow channel 501, the height of the second through groove 9013 can be the same as the height of the second flow channel 503, and the height of the third through groove 9015 can be the same as the height of the third flow channel 505. Thus, the cooling medium flowing out of the first flow channel 501 can directly flow out from the first through groove 9011, the cooling medium flowing out of the second flow channel 503 can directly flow out from the second through groove 9013, and the cooling medium flowing out of the third flow channel 505 can directly flow out from the third through groove 9015. After the cooling medium flowing out of the first through groove 9011, the second through groove 9013, and the third through groove 9015 is collected, it then flows out from the outlet 19.

[0108] Please refer to Figure 8 , the electronic device 10000 of the embodiment of the present application includes the battery assembly 1000 of the above embodiment. Among them, the electronic device 10000 includes at least one of an electric vehicle, a drone, an electric boat, and a robot, and the battery assembly 1000 is used to supply electrical energy to at least one of an electric vehicle, a drone, an electric boat, and a robot.

[0109] In the electronic device 10000 of the embodiment of the present application, at least one of the peripheries of the box body 10 and the cover body 30 is provided with a groove, and at least a part of the sealing assembly 50 is arranged in the groove. In the case where the cooling medium penetrates from the connection between the cover body 30 and the box body 10 towards the outside of the housing 100, the setting of the groove can make the flow path 13 of the cooling medium become bent to extend the flow path 13 of the cooling medium, thereby blocking the cooling medium from flowing out of the housing 100. The sealing assembly 50 is used to seal the gap between the box body 10 and the cover body 30, and the sealing assembly 50 arranged in the groove can further block the cooling medium in the groove from flowing out of the housing 100. The sealing effect of the housing 100 of the present application is good, and the cooling medium in the housing 100 is not easily leaked from the housing 100.

[0110] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification. At the same time, other embodiments can be derived from the above-described embodiments, so that structural and logical substitutions and changes can be made without departing from the scope of the present disclosure.

[0111] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A housing (100) of a battery assembly (1000), characterized in that: The housing (100) comprises: Cover body (30); A box body (10), the cover body (30) being mounted on the box body (10), the cover body (30) and the box body (10) being adapted to form a receiving cavity, the receiving cavity being adapted to receive a battery module (300), the battery module (300) being in direct contact with a cooling medium, and a groove (20) being provided on the periphery of at least one of the box body (10) and the cover body (30); and A sealing component (50), at least a portion of which is disposed in the groove (20), and the box body (10) and the cover body (30) jointly clamp the sealing component (50) in the groove (20).

2. The housing (100) according to claim 1, characterized in that: The top surface of the peripheral edge of the box body (10) is recessed toward the bottom surface to form a first groove (11), and when the cover body (30) is installed on the box body (10), at least a portion of the cover body (30) extends into the first groove (11); The sealing assembly (50) comprises a first sealing member (51), wherein the first sealing member (51) is arranged in the first groove (11), and the cover body (30) and the bottom wall of the first groove (11) jointly clamp the first sealing member (51).

3. The housing (100) according to claim 2, characterized in that: The bottom surface of the peripheral edge of the cover body (30) is recessed toward the top surface to form a second groove (31); the side wall of the second groove (31) away from the accommodating cavity (15) extends into the first groove (11); the side wall of the first groove (11) close to the accommodating cavity (15) extends into the second groove (31); the second groove (31) is connected to the first groove (11) to form a bent passage (13); The sealing assembly (50) further comprises a second sealing member (53), wherein the second sealing member (53) is arranged in the second groove (31), the side wall of the first groove (11) close to the accommodating cavity (15) and the top wall of the second groove (31) jointly clamp the second sealing member (53), and the side wall of the second groove (31) away from the accommodating cavity (15) and the bottom wall of the first groove (11) jointly clamp the first sealing member (51).

4. The housing (100) according to claim 3, characterized in that: In the length direction and the width direction of the housing (100), the second groove (31) is closer to the accommodating cavity (15) than the first groove (11).

5. The housing (100) according to claim 3, characterized in that: In the height direction of the housing (100), the height of the position where the first sealing member (51) is located is different from the height of the position where the second sealing member (53) is located.

6. The housing (100) according to claim 3, characterized in that: The sealing assembly (50) further comprises: A third sealing member (55), wherein the third sealing member (55) is disposed on the outer side of the periphery of the cover body (30) and the top surface of the periphery of the box body (10), and seals a gap between a side wall of the second groove (31) away from the accommodating cavity (15) and a side wall of the first groove (11) away from the accommodating cavity (15).

7. The housing (100) according to claim 3, characterized in that: The box body (10) comprises a main body (16) and a mounting portion (17), wherein the mounting portion (17) extends from the periphery of the main body (16) in a direction away from the accommodating cavity (15), the mounting portion (17) is provided with the first groove (11), and the bottom wall of the first groove (11) is provided with a first mounting hole (111); The cover body (30) is provided with a second mounting hole (33), and the second mounting hole (33) corresponds to the first mounting hole (111); the shell (100) also includes a fastener (70), and the fastener (70) penetrates the second mounting hole (33) and the first mounting hole (111) to connect the cover body (30) with the box body (10).

8. The housing (100) according to claim 1, characterized in that: The housing (100) is provided with a signal line interface (80) and a power line interface (90), the signal line interface (80) is surrounded by a first flange (81) extending from the housing (100), a signal line connector (83) is installed in the first flange (81), and a first sealant is provided between the signal line connector (83) and the first flange (81); and / or The power line interface (90) is surrounded by a second flange (91) extending from the shell (100), the power line connector (93) is installed in the second flange (91), and a second sealant is provided between the power line connector (93) and the second flange (91).

9. The housing (100) according to claim 1, characterized in that: The box body (10) is provided with an inlet (18) and an outlet (19), wherein the inlet (18) is used for allowing a cooling medium to enter the shell (100), and the outlet (19) is used for allowing the cooling medium to flow out of the shell (100); the cover body (30) is provided with an air guide component (35) on a side facing the box body (10), and the air guide component (35) is used for guiding the gas in the shell (100) to be discharged outside the shell (100) when the cooling medium enters the shell (100) from the inlet (18).

10. The housing (100) according to claim 9, characterized in that: The air guide component (35) comprises: a plurality of first guide strips (351), wherein the first guide strips (351) extend along the width direction of the shell (100), the plurality of first guide strips (351) are arranged at intervals along the length direction of the shell (100), and two adjacent first guide strips (351) form an air guide channel (3511); a plurality of second guide bars (353), the plurality of second guide bars (353) being arranged at intervals, the second guide bars (353) intersecting with the first guide bars (351), two adjacent second guide bars (353) forming an exhaust channel (3531), and the plurality of air guide channels (3511) being connected to the exhaust channel (3531); and An exhaust valve (355), wherein the exhaust valve (355) passes through the cover body (30) and is connected to one end of the exhaust channel (3531), and the other end of the exhaust channel (3531) is closer to the inlet (18) than the exhaust valve (355).

11. The housing (100) according to claim 10, characterized in that: The second guide strip (353) is provided with a plurality of guide openings (3533), and the two sides of the exhaust channel (3531) are connected to the gas guide channel (3511) through the guide openings (3533), and along the direction of gas flow in the exhaust channel (3531), the opening sizes of the plurality of guide openings (3533) on the second guide strip (353) gradually decrease.

12. The housing (100) according to claim 9, characterized in that: In the height direction of the housing (100), the height of the inlet (18) is lower than the height of the outlet (19).

13. The housing (100) according to claim 1, characterized in that The height of the housing (100) ranges from [80 mm to 150 mm].

14. The housing (100) according to claim 1, characterized in that The ratio of the length of the shell (100) to the width of the shell (100) is in the range of (1.1, 2).

15. A battery assembly (1000), characterized in that: include: The housing (100) according to any one of claims 1 to 14; and A battery module (300), the battery module (300) is installed in the housing (100).

16. The battery assembly (1000) according to claim 15, characterized in that: In the height direction of the housing (100), the height of the box body (10) is higher than the height of the battery module (300).

17. The battery assembly (1000) according to claim 15, characterized in that: The shell (100) is provided with a signal line interface (80) and a power line interface (90), and the signal line interface (80) and the power line interface (90) are respectively located on both sides of the shell (100) in the width direction; the battery module (300) includes a plurality of battery cells (301) arranged along the length direction of the shell (100), and two pole ears of the battery cell (301) are respectively located at opposite ends of the battery cell (301) in the length direction, and the length direction of the battery cell (301) is consistent with the width direction of the shell (100).

18. The battery assembly (1000) according to claim 15, characterized in that: At least one battery module (300) is disposed in the housing (100), and a plurality of flow channels (500) are formed in layers in the height direction of the housing (100) inside the battery module (300) or with the housing (100), and the flow channels (500) extend in a direction from an inlet (18) to an outlet (19) of the housing (100); the battery assembly (1000) further comprises: A first flow guide (700), the first flow guide (700) is installed in the shell (100) and is located between the inlet (18) and the battery module (300), the inlet (18) is connected to one side of the first flow guide (700), and the other side of the first flow guide (700) is provided with a plurality of layers of connecting through holes (701) layered in the height direction of the shell (100), and the plurality of layers of connecting through holes (701) are respectively connected to the plurality of circulation channels (500).

19. The battery assembly (1000) according to claim 18, characterized in that: The circulation channel (500) includes a first circulation channel (501) formed between the battery module (300) and the bottom wall of the box body (10), a second circulation channel (503) formed between the battery module (300) and the cover body (30), and a third circulation channel (505) formed by the gap between adjacent battery modules (300); the plurality of connecting through holes (701) include a first through hole (7011) connected to the first circulation channel (501), a second through hole (7013) connected to the second circulation channel (503), and a third through hole (7015) connected to the third circulation channel (505).

20. The battery assembly (1000) according to claim 15, characterized in that: At least one battery module (300) is disposed in the housing (100), and a plurality of flow channels (500) are formed in layers in the height direction of the housing (100) inside the battery module (300) or with the housing (100), and the flow channels (500) extend in a direction from an inlet (18) to an outlet (19) of the housing (100); the battery assembly (1000) further comprises: A second flow guide (900), the second flow guide (900) is installed in the shell (100) and is located between the outlet (19) and the battery module (300), the outlet (19) is connected to one side of the second flow guide (900), and the other side of the second flow guide (900) is provided with a plurality of layers of communicating grooves (901) layered in the height direction of the shell (100), and the plurality of layers of communicating grooves (901) are respectively connected to the plurality of circulation channels (500).

21. The battery assembly (1000) according to claim 20, characterized in that: The circulation channel (500) includes a first circulation channel (501) formed between the battery module (300) and the bottom wall of the box body (10), a second circulation channel (503) formed between the battery module (300) and the cover body (30), and a third circulation channel (505) formed by the gap between adjacent battery modules (300); the plurality of connecting grooves (901) include a first groove (9011) connected to the first circulation channel (501), a second groove (9013) connected to the second circulation channel (503), and a third groove (9015) connected to the third circulation channel (505).

22. An electronic device (10000), characterized in that: include: The battery assembly (1000) according to any one of claims 15 to 21.

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