Battery shell, battery device, electric equipment and energy storage system

Abstract

The utility model discloses a battery shell, a battery device, electric equipment and an energy storage system. The battery shell comprises a shell body and a first fluid director. The shell body is suitable for containing the battery module, a flow channel is formed in the battery module and / or between the battery module and the shell body, the flow channel is used for allowing a cooling medium to flow in the shell body, and the shell body is provided with an inlet. The first fluid director is arranged in the shell body and communicates with the inlet and the flow channel, and the first fluid director is used for allowing a cooling medium flowing into the shell body from the inlet to flow to the flow channel. According to the battery device, the cooling medium can be in contact with the battery module and is used for cooling and dissipating heat of the battery module, so that overheating damage of the battery module caused by accumulation of heat generated in the operation process of the battery module can be prevented, normal work of the battery device is further ensured, the safety performance of the battery device is improved, and the service life of the battery device is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of energy storage, and more specifically, to a battery housing, a battery device, an electrical equipment, and an energy storage system. Background Art

[0002] In the related art, heat is generated during the operation of a battery device. If heat dissipation is not performed in a timely manner, the heat will continuously accumulate, leading to overheating and damage of the battery device. For example, the battery device is prone to thermal runaway, causing safety problems such as fire and explosion, which is not conducive to the use safety of the battery device and affects the service life of the battery device. Therefore, how to achieve cooling and heat dissipation of the battery device has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0003] Embodiments of this application provide a battery housing, a battery device, an electrical equipment, and an energy storage system.

[0004] The battery housing of the embodiments of this application includes a housing body and a first flow deflector. The housing body is adapted to accommodate a battery module. A flow channel is formed inside the battery module and / or between the battery module and the housing body. The flow channel is used for a cooling medium to flow in the housing body. The housing body is provided with an inlet. The first flow deflector is disposed in the housing body and is in communication with both the inlet and the flow channel. The first flow deflector is used for guiding the cooling medium flowing into the housing body from the inlet to the flow channel.

[0005] In some embodiments, there are a plurality of flow channels. The plurality of flow channels are stratified in the height direction of the housing body. The plurality of flow channels are used for the cooling medium to flow in a bent manner in the housing body.

[0006] In some embodiments, the housing body is further provided with an outlet. The battery housing further includes a second flow deflector. The second flow deflector is disposed in the housing body and is in communication with both the outlet and the flow channel. The second flow deflector is used for guiding the cooling medium in the flow channel to flow out of the housing body through the outlet.

[0007] In some embodiments, in the height direction of the housing body, the height of the inlet is higher than the height of the outlet.

[0008] In some embodiments, the value range of the ratio of the height of the inlet to the height of the outlet is [2.5, 3.5].

[0009] In some embodiments, the inlet and the outlet are disposed on the same side of the housing body in a first direction, where the first direction is perpendicular to the height direction of the housing body.

[0010] In some embodiments, the inlet and the outlet are disposed on opposite sides of the housing body in a first direction, where the first direction is perpendicular to the height direction of the housing body.

[0011] In some embodiments, the housing body includes a box body and a cover body mounted on the box body. The flow channel includes a first flow channel formed between the battery module and the cover body, and a second flow channel formed between the battery module and the bottom wall of the box body. The first deflector is provided with a communication hole, and the communication hole is correspondingly communicated with the first flow channel. The second deflector is provided with a guiding through hole, and the guiding through hole is correspondingly communicated with the second flow channel.

[0012] In some embodiments, the battery module includes at least one cell module. The flow channel further includes a third flow channel formed by the gap between adjacent cell modules. In a first direction, the flow channel includes opposite first and second ends, and the first direction is perpendicular to the height direction of the housing body. When the inlet and the outlet are disposed on opposite sides of the housing body in the first direction, the first end of the first flow channel is communicated with the communication hole, the second end of the first flow channel is only communicated with the second end of the adjacent third flow channel, the second end of the second flow channel is communicated with the guiding through hole, and the first end of the second flow channel is only communicated with the first end of the adjacent third flow channel.

[0013] In some embodiments, the battery module includes at least one cell module. The flow channel further includes a third flow channel formed by the gap between adjacent cell modules. In a first direction, the flow channel includes opposite first and second ends, and the first direction is perpendicular to the height direction of the housing body. When the inlet and the outlet are disposed on the same side of the housing body in the first direction, the first end of the first flow channel is communicated with the communication hole, the second end of the first flow channel is only communicated with the second end of the adjacent third flow channel, the first end of the second flow channel is communicated with the guiding through hole, and the second end of the second flow channel is only communicated with the second end of the adjacent third flow channel.

[0014] In some embodiments, a flow gap is formed between the battery module and the peripheral wall of the box body. The battery housing further includes a barrier member disposed in the flow gap. The barrier member is used to make the first flow channel only communicate with the adjacent third flow channel, and the barrier member is further used to make the second flow channel only communicate with the adjacent third flow channel.

[0015] In some embodiments, a blocking block is disposed in the flow gap. One end of the blocking block is connected to the housing body, and the other end is connected to the battery module. The blocking block is the barrier member.

[0016] In some embodiments, the barrier is the top wall of the second deflector in the height direction of the housing body.

[0017] In some embodiments, in a first direction, the housing body includes opposite first and second sides, the first deflector is disposed between the first side of the housing body and the battery module, the first direction is perpendicular to the height direction of the housing body, and the battery housing further includes a seal disposed between the first deflector and the first side of the housing body to seal the gap between the first deflector and the first side of the housing body.

[0018] In some embodiments, in a first direction, the housing body includes opposite first and second sides, the first deflector is disposed between the first side of the housing body and the battery module, the first direction is perpendicular to the height direction of the housing body, and the battery housing further includes a seal disposed between the first deflector and the battery module to seal the gap between the first deflector and the battery module.

[0019] In some embodiments, in a second direction, the housing body includes opposite third and fourth sides, and the battery housing further includes a barrier disposed between the first deflector and the third side and the fourth side of the housing body to seal the gap between the first deflector and the third side and the fourth side of the housing body, and the second direction is perpendicular to the first direction and the height direction of the housing body.

[0020] In some embodiments, in a first direction, the housing body includes opposite first and second sides, the second deflector of the battery housing is disposed between the second side of the housing body and the battery module, the first direction is perpendicular to the height direction of the housing body, and the battery housing further includes a seal disposed between the second deflector and the second side of the housing body to seal the gap between the second deflector and the second side of the housing body.

[0021] In some embodiments, in a first direction, the housing body includes opposite first and second sides, the second deflector of the battery housing is disposed between the second side of the housing body and the battery module, the first direction is perpendicular to the height direction of the housing body, and the battery housing further includes a seal disposed between the second deflector and the battery module to seal the gap between the second deflector and the battery module.

[0022] In some embodiments, in the second direction, the housing body includes an opposite third side and a fourth side, and the battery housing further includes a blocking member disposed between the second flow guide and the third side and the fourth side of the housing body to seal a gap between the second flow guide and the third side and the fourth side of the housing body. The second direction is perpendicular to the first direction and the height direction of the housing body.

[0023] In some embodiments, the thickness of the sealing member 80 ranges from [3 mm, 7 mm].

[0024] In some embodiments, a signal line interface and a power line interface are provided on the housing body, and the signal line interface and the power line interface are respectively located on opposite sides of the housing body in the second direction.

[0025] The battery device according to an embodiment of the present application includes a battery module and the battery housing according to any one of the above embodiments. The battery module is disposed within the battery housing.

[0026] The electrical equipment according to an embodiment of the present application includes the battery device according to the above embodiment.

[0027] The energy storage system according to an embodiment of the present application includes the battery device according to the above embodiment.

[0028] In the battery housing, battery device, electrical equipment, and energy storage system according to the embodiments of the present application, the first flow guide is used to supply the cooling medium flowing into the housing body from the inlet to the flow channel. In this way, the cooling medium can contact the battery module and cool and dissipate heat from the battery module, thereby preventing heat accumulation generated during the operation of the battery module from causing overheating and damage to the battery module, further ensuring the normal operation of the battery device, improving the safety performance of the battery device, and extending the service life of the battery device.

[0029] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0031] Figure 1 is a three-dimensional structural schematic diagram of a battery pack according to some embodiments of the present application;

[0032] Figure 2 is Figure 1 a three-dimensional exploded schematic diagram of an embodiment of the battery pack shown in

[0033] Figure 3 is Figure 1 a schematic cross-sectional view of an embodiment of the battery pack shown;

[0034] Figure 4 is Figure 1 a schematic cross-sectional view of another embodiment of the battery pack shown;

[0035] Figure 5 is Figure 1 a schematic perspective view of the first flow deflector and the seal in the battery pack shown;

[0036] Figure 6 is Figure 1 a schematic perspective view of the second flow deflector and the seal in the battery pack shown;

[0037] Figure 7 is a schematic structural view of an electronic device according to some embodiments of the present application.

[0038] Description of main component symbols:

[0039] electrical equipment 1000;

[0040] battery device 100; height direction Z; width direction X; length direction Y;

[0041] battery housing 110, closure 1101, housing body 10, inlet 101, outlet 102, first side 103, second side 104, third side 105, fourth side 106, signal line interface 107, power line interface 108, negative electrode interface 1081, positive electrode interface 1083, box body 11, bottom wall 111, peripheral wall 113, cover body 13; first flow deflector 30, communication hole 31; second flow deflector 40, through hole 41; barrier member 70; seal 80; blocking member 90;

[0042] battery module 20; flow channel 50, first flow channel 51, first end 511, second end 513, second flow channel 53, first end 531, second end 533, third flow channel 55, first end 551, second end 553; flow gap 60. Detailed embodiments

[0043] To make the above objects, features, and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order 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.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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.

[0045] 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" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0046] In the present application, unless otherwise clearly specified and limited, terms such as "installed", "connected", "coupled" should 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 limited. 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.

[0047] In the present application, unless otherwise clearly specified and limited, 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.

[0048] Please refer to Figure 1 , the energy storage system according to the embodiment of the present application includes a battery device 100. It should be noted that in some embodiments, the energy storage system may be a battery energy storage system. Among them, the energy storage system can be applied to the power system to achieve functions such as demand-side management, peak shaving and valley filling, and rapid adjustment of the grid frequency, improve the stability and reliability of the grid operation, and reduce the impact of new energy power generation systems with large instantaneous changes such as photovoltaic or wind power on the grid.

[0049] Among them, since the energy storage system in this embodiment includes the battery device 100, it can be understood that the energy storage system at least includes the same beneficial effects as the battery device 100. Therefore, for the beneficial effects of the energy storage system, please refer to the beneficial effects of the battery device 100 introduced below.

[0050] Please refer to Figure 1 and Figure 7 , the electrical device 1000 of the embodiment of the present application includes the battery device 100. It should be noted that in some embodiments, the electrical device 1000 may include, but is not limited to, at least one of a vehicle, a drone, an electric boat, an energy storage cabinet, and a robot. The battery device 100 can provide electrical energy for at least one of a vehicle, a drone, an electric boat, an energy storage cabinet, and a robot.

[0051] Among them, since the electrical device 1000 in this embodiment includes the battery device 100, it can be understood that the electrical device 1000 at least includes the same beneficial effects as the battery device 100. Therefore, for the beneficial effects of the electrical device 1000, please refer to the beneficial effects of the battery device 100 introduced below.

[0052] Please refer to Figure 1 and Figure 2 , the battery device 100 of the embodiment of the present application includes a battery housing 110 and a battery module 20. The battery module 20 is disposed within the battery housing 110.

[0053] It should be noted that in some embodiments, the battery device 100 is a structure capable of realizing energy storage and release. The functions of the battery device 100 include, but are not limited to, energy storage, energy dispatching, and energy storage power stations, etc. In some embodiments of the present application, the battery module 20 includes at least one cell module, and a flow channel 50 is formed between adjacent cell modules. Among them, when the battery module 20 includes a plurality of cell modules, the plurality of cell modules are stacked in the height direction Z of the housing body 10. Further, in some embodiments, the cell module includes a plurality of cells, and the plurality of cells can be directly connected in series, in parallel, or in a hybrid connection (including series and parallel) together. It can be understood that the number of cells in the cell module can be adaptively adjusted according to the application scenario and capacity of the battery module 20.

[0054] Among them, since the battery device 100 in this embodiment includes the battery housing 110, it can be understood that the battery device 100 at least includes the same beneficial effects as the battery housing 110. Therefore, for the beneficial effects of the battery device 100, please refer to the beneficial effects of the battery housing 110 introduced below.

[0055] Please refer to Figures 1 to 3The battery housing 110 of the embodiment of the present application includes a housing body 10 and a first flow guide 30. The housing body 10 is suitable for accommodating the battery module 20. A flow channel 50 is formed inside the battery module 20 and / or between the battery module 20 and the housing body 10. The flow channel 50 is used for allowing the cooling medium to flow in the housing body 10. The housing body 10 is provided with an inlet 101. The first flow guide 30 is disposed in the housing body 10 and is connected to both the inlet 101 and the flow channel 50. The first flow guide 30 is used for allowing the cooling medium flowing into the housing body 10 from the inlet 101 to flow to the flow channel 50.

[0056] The shell body 10 is a structure in the battery device 100 that can accommodate and protect the battery module 20 and other devices. The material of the shell body 10 includes, but is not limited to, plastic, aluminum alloy, copper, iron, steel or carbon fiber composite material, etc. Exemplarily, the shell body 10 is made of aluminum alloy, so that the shell body 10 can be made lighter and easier to transport while ensuring the rigidity of the shell body 10.

[0057] The first flow guide 30 is a structure that can guide the flow direction of the cooling medium. Specifically, in some embodiments, when the cooling medium enters the shell body 10 through the inlet 101, the cooling medium can flow into the flow channel 50 through the first flow guide 30, and the flow channel 50 can allow the cooling medium to flow in the shell body 10, so that the cooling medium can cool and dissipate heat for the battery module 20, preventing the heat generated by the battery module 20 during operation from accumulating and causing overheating and damage to the battery device 100, thereby ensuring the normal operation of the battery device 100.

[0058] Specifically, in some embodiments, a flow channel 50 is formed inside the battery module 20, and / or between the battery module 20 and the shell body 10, that is, a flow channel 50 is formed between adjacent battery modules, and / or between the battery module 20 and the shell body 10. It is understood that in some embodiments, when the cooling medium enters the shell body 10, the cooling medium can immerse the battery module 20, so that the contact area between the cooling medium and the battery module 20 can be increased, the cooling efficiency of the cooling medium on the battery module 20 can be improved, and the cooling of the battery module 20 by the cooling medium can be made more uniform. Among them, when the cooling medium immerses the battery module 20, the cooling medium needs to have the following characteristics: good electrical insulation, non-flammable and having a high flash point, an appropriate operating temperature range, a long service life, good material compatibility, low weight, low viscosity, low corrosiveness and sustainability. The cooling medium can be a coolant, a cooling gas, or a mixture of a coolant and a cooling gas. For example, the cooling medium includes, but is not limited to, hydrofluoroether, synthetic oil (such as silicone oil), water (requires the use of silicone sealant or boron nitride for sealing to achieve electrical isolation), fluorinated liquid, helium, nitrogen, fluorocarbons or hydrocarbons, etc.

[0059] In the battery housing 110 according to the embodiments of the present application, the first flow deflector 30 is used to direct the cooling medium flowing into the housing body 10 from the inlet 101 to the flow channel 50. In this way, the cooling medium can contact the battery module 20 and cool and dissipate heat from the battery module 20, thereby preventing overheating and damage of the battery device 100 caused by heat accumulation during the operation of the battery module 20, ensuring the normal operation of the battery device 100, improving the safety performance of the battery device 100, and extending the service life of the battery device 100.

[0060] The battery housing 110 will be further described below with reference to the accompanying drawings.

[0061] Please refer to Figures 1 to 3 , in some embodiments, the housing body 10 includes a box body 11 and a cover body 13 mounted on the box body 11. In some embodiments, the box body 11 and the cover body 13 can be combined together by a detachable connection method, and the detachable connection methods include but are not limited to threaded connection, screw connection, snap connection, etc. In other embodiments, the box body 11 and the cover body 13 can be combined together by a non-detachable connection method, and the non-detachable connection methods include but are not limited to bonding or welding, etc.

[0062] Further, in some embodiments, in the height direction Z of the housing body 10, the height of the box body 11 is higher than the height of the battery module 20. In this way, when the cooling medium flows into the housing body 10, the cooling medium can completely immerse the battery module 20, and even if the cover body 13 is not connected to the box body 11, the cooling medium will not easily overflow from the box body 11, thereby reducing the possibility of leakage of the cooling medium from the box body 11, ensuring the amount of the cooling medium, and improving the heat dissipation effect of the cooling medium on the battery module 20.

[0063] In some embodiments, the battery housing 110 may further include a sealing member 1101, and the sealing member 1101 is disposed between the box body 11 and the cover body 13 to seal the gap between the box body 11 and the cover body 13 and prevent the cooling medium in the housing body 10 from leaking through the gap between the box body 11 and the cover body 13, resulting in insufficient cooling medium, thereby improving the cooling and heat dissipation effect of the cooling medium on the battery module 20. It should be noted that, in some embodiments, the sealing member 1101 may include but is not limited to rubber rings or sealants, etc., and the materials of the sealants include but are not limited to silicone, polyurethane, acrylate, polysulfide, etc.

[0064] In some embodiments, there are multiple flow channels 50, and the multiple flow channels 50 are stratified in the height direction Z of the housing body 10, and the multiple flow channels 50 are used to allow the cooling medium to flow in a bent manner within the housing body 10.

[0065] Specifically, in some embodiments, the battery cell module includes one. At this time, in the height direction Z of the housing body 10, a flow channel 50 is formed between the upper surface of the battery cell module and the cover body 13, and another flow channel 50 is formed between the lower surface of the battery cell module and the bottom wall 111 of the box body 11. In some other embodiments, the battery cell module includes at least two. At least two battery cell modules can be stacked along the height direction Z of the housing body 10 in the housing body 10. At this time, in the height direction Z of the housing body 10, a flow channel 50 is formed between the upper surface of the uppermost battery cell module and the cover body 13, a flow channel 50 is formed between the lower surface of the lowermost battery cell module and the bottom wall 111 of the box body 11, and a flow channel 50 is also formed between two adjacent battery cell modules. It can be understood that when the number of battery cell modules is n, the number of flow channels 50 formed between two adjacent battery cell modules is n - 1. For example, when the number of battery cell modules is two, the number of flow channels formed between two adjacent battery cell modules is one; for another example, when the number of battery cell modules is three, the number of flow channels formed between two adjacent battery cell modules is two.

[0066] Please continue to refer to Figures 1 to 3 , in some embodiments, the housing body 10 is further provided with an outlet 102, and the battery housing 110 further includes a second deflector 40. The second deflector 40 is disposed in the housing body 10 and is in communication with both the outlet 102 and the flow channel 50. The second deflector 40 is used for allowing the cooling medium in the flow channel 50 to flow out of the housing body 10 through the outlet 102.

[0067] Among them, the second deflector 40 is a structure capable of guiding the flow direction of the cooling medium. Specifically, in some embodiments, when the cooling medium enters the housing body 10 through the inlet 101, the cooling medium can flow into the flow channel 50 through the first deflector 30, and the plurality of flow channels 50 can allow the cooling medium to flow in a bent manner in the housing body 10. The cooling medium in the flow channel 50 can flow into the second deflector 40 and flow out of the housing body 10 through the outlet 102. In this way, the cooling effect of the cooling medium on the battery module 20 can be improved. The cooling medium can take out the heat of the battery module 20 to the outside of the housing body 10, so that the battery module 20 can be cooled and the temperature can be reduced. At the same time, the temperature difference between the plurality of battery cells in the battery module 20 is small.

[0068] In some embodiments, in the first direction X, the housing body 10 includes opposite first and second sides 103 and 104. The first deflector 30 of the battery housing 110 is disposed between the first side 103 of the housing body 10 and the battery module 20, and the second deflector 40 of the battery housing 110 is disposed between the second side 104 of the housing body 10 and the battery module 20. The first direction X is perpendicular to the height direction Z of the housing body 10. In the second direction Y, the housing body 10 includes opposite third and fourth sides 105 and 106. The second direction Y is perpendicular to the first direction X and the height direction Z of the housing body 10.

[0069] Wherein, one of the first direction X and the second direction Y may be the length direction of the housing body 10, and the other of the first direction X and the second direction Y may be the width direction of the housing body 10. In the embodiments of the present application, only the case where the first direction X is the width direction of the housing body 10 and the second direction Y is the length direction of the housing body 10 is taken as an example for illustration.

[0070] Please refer to Figure 3 , in some embodiments, in the height direction Z of the housing body 10, the height of the inlet 101 is higher than the height of the outlet 102.

[0071] Specifically, in some embodiments, when the cooling medium flows into the housing body 10 through the inlet 101, the cooling medium can flow towards the outlet 102 under its own gravity. Thus, on the one hand, compared with the case where the height of the inlet 101 is lower than or equal to the height of the outlet 102 in the height direction Z of the housing body 10, the flow rate of the cooling medium in the housing body 10 is faster, thereby improving the cooling efficiency of the cooling medium for the battery module 20; on the other hand, the battery device 100 does not need to be provided with redundant pumps or other power devices to drive the flow of the cooling medium, thereby simplifying the structure of the battery device 100, reducing the production cost of the battery device 100, and being beneficial to the miniaturization of the battery device 100.

[0072] Furthermore, in some embodiments, the ratio of the height of the inlet 101 to the height of the outlet 102 ranges from [2.5, 3.5]. Specifically, in some embodiments, the ratio of the height of the inlet 101 to the height of the outlet 102 may be any value between 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, and 3.5 or any numerical value between any two of these values.

[0073] Wherein, if the ratio of the height of the inlet 101 to the height of the outlet 102 is less than 2.5, when the cooling medium flows into the housing body 10 through the inlet 101, the gravitational potential energy of the cooling medium is small, which will lead to a small increase in the flow rate of the cooling medium and affect the improvement of the cooling efficiency of the cooling medium; if the ratio of the height of the inlet 101 to the height of the outlet 102 is greater than 3.5, the distance between the inlet 101 and the outlet 102 is too large, which will lead to a large size of the housing body 10 and is not conducive to the miniaturization of the battery device 100. In the embodiment of the present application, the value range of the ratio of the height of the inlet 101 to the height of the outlet 102 is [2.5, 3.5]. On the one hand, this can increase the gravitational potential energy of the cooling medium, thereby increasing the flow rate of the cooling medium and further improving the cooling efficiency of the cooling medium; on the other hand, it can prevent the distance between the inlet 101 and the outlet 102 from being too large, resulting in a large size of the housing body 10, thus ensuring the miniaturization of the battery device 100.

[0074] Please combine Figure 4 to, in some embodiments, the inlet 101 and the outlet 102 are arranged on the same side of the housing body 10 in the first direction X.

[0075] Specifically, in some embodiments, both the inlet 101 and the outlet 102 are arranged on the first side 103 of the housing body 10; or, both the inlet 101 and the outlet 102 are arranged on the second side 104 of the housing body 10. On the one hand, this can facilitate the connection between the inlet 101 and the outlet 102 and external devices (such as inlet pipes and outlet pipes, etc.); on the other hand, it can reduce the possibility of interference with other devices when the inlet 101 and the outlet 102 are connected to external devices.

[0076] It can be understood that in this embodiment, the number of the battery cell modules is an odd number. For example, the number of the battery cell modules is 1, 3, or 5, etc. At this time, the number of the flow channels 50 formed between two adjacent battery cell modules is an even number, and an even number of flow channels 50 are formed in a layered manner in the height direction Z of the housing body 10 inside the battery module 20 or between the battery module 20 and the housing body 10. Thus, when the cooling medium flows in multiple flow channels 50, the cooling medium can enter and exit on the same side of the housing body 10. Therefore, when the inlet 101 and the outlet 102 are arranged on the same side of the housing body 10 in the first direction X, the number of the battery cell modules is an odd number.

[0077] Please combine Figure 3 to, in some other embodiments, the inlet 101 and the outlet 102 are arranged on opposite sides of the housing body 10 in the first direction X.

[0078] Specifically, in some embodiments, the inlet 101 is disposed on the first side 103 of the housing body 10, and the outlet 102 is disposed on the second side 104 of the housing body 10; alternatively, the inlet 101 is disposed on the second side 104 of the housing body 10, and the outlet 102 is disposed on the first side 103 of the housing body 10.

[0079] It can be understood that in this embodiment, the number of battery cell modules is an even number. For example, the number of battery cell modules is 2, 4, or 6, etc. At this time, the number of flow channels 50 formed between two adjacent battery cell modules is an odd number, and an odd number of flow channels 50 are formed in a layered manner in the height direction Z of the housing body 10 inside the battery module 20 or between the battery module 20 and the housing body 10. Thus, when the cooling medium bends and flows in the plurality of flow channels 50, the cooling medium can enter and exit from the opposite sides of the housing body 10. Therefore, when the inlet 101 and the outlet 102 are disposed on the opposite sides of the housing body 10 in the first direction X, the number of battery cell modules is an even number.

[0080] Please refer to Figure 3 or Figure 4 , and in combination with Figure 2 , in some embodiments, the flow channel 50 includes a first flow channel 51 formed between the battery module 20 and the cover body 13, and a second flow channel 53 formed between the battery module 20 and the bottom wall 111 of the box body 11. The first deflector 30 is provided with a communication hole 31, and the communication hole 31 is correspondingly communicated with the first flow channel 51. The second deflector 40 is provided with a through hole 41, and the through hole 41 is correspondingly communicated with the second flow channel 53. It should be noted that in some embodiments, the number of the communication holes 31 includes at least one, and the number of the through holes 41 includes at least one.

[0081] Specifically, in some embodiments, in the height direction Z of the housing body 10, the flow channel 50 formed between the upper surface of the battery module 20 and the cover body 13 is the first flow channel 51, and the flow channel 50 formed between the lower surface of the battery module 20 and the bottom wall 111 of the box body 11 is the second flow channel 53. Exemplarily, when the cooling medium at a lower temperature enters the first deflector 30 through the inlet 101, the cooling medium in the first deflector 30 can enter the first flow channel 51 through the communication hole 31, and the cooling medium can flow in the first flow channel 51 and the second flow channel 53 to absorb the heat generated by the battery module 20 during operation. In this way, the temperature of the battery module 20 can be ensured within a controllable range, and the cooling medium that has absorbed the heat can enter the second deflector 40 through the through hole 41, and the cooling medium in the second deflector 40 can flow out of the housing body 10 through the outlet 102. It can be understood that in some embodiments, in the height direction Z of the housing body 10, the height of the communication hole 31 is higher than the height of the through hole 41.

[0082] Among them, in the height direction Z of the housing body 10, the height of the communication hole 31 can be the same as the height of the first flow channel 51, and the height of the through hole 41 can be the same as the height of the second flow channel 53. In this way, the cooling medium in the first deflector 30 can directly enter the first flow channel 51 through the communication hole 31, and the cooling medium in the second flow channel 53 can directly enter the second deflector 40 through the through hole 41, thereby shortening the flow path of the cooling medium and increasing the flow rate of the cooling medium.

[0083] Please refer to Figure 3 or Figure 4 and in combination with Figure 2 , in some embodiments, the flow channel 50 further includes a third flow channel 55 formed by the gap between adjacent battery cell modules. In the first direction X, the flow channel 50 includes opposite first and second ends.

[0084] Among them, in the first direction X, the flow channel 50 includes opposite first and second ends, that is, in the first direction X, the first flow channel 51 includes opposite first and second ends 511 and 513, the second flow channel 53 includes opposite first and second ends 531 and 533, the third flow channel 55 includes opposite first and second ends 551 and 553, the first end 511 of the first flow channel, the first end 531 of the second flow channel, and the first end 551 of the third flow channel are located on the same side of the housing body 10; the second end 513 of the first flow channel, the second end 533 of the second flow channel, and the second end 553 of the third flow channel are located on the same side of the housing body 10.

[0085] Please combine Figure 3 , in some embodiments, when the inlet 101 and the outlet 102 are disposed on opposite sides of the housing body 10 in the first direction X, the first end 511 of the first flow channel is communicated with the communication hole 31, the second end 513 of the first flow channel is only communicated with the second end 553 of the adjacent third flow channel, the second end 533 of the second flow channel is communicated with the through hole 41, and the first end 531 of the second flow channel is only communicated with the first end 551 of the adjacent third flow channel.

[0086] As can be seen from the above, the inlet 101 and the outlet 102 are arranged on opposite sides of the housing body 10 in the first direction X. Then, the number of battery cell modules is an even number, and the number of the third flow channels 55 is an odd number. Exemplarily, when the number of battery cell modules is two, the number of the third flow channels 55 is one. Then, the first end 511 of the first flow channel is communicated with the communication hole 31, and the second end 513 of the first flow channel is only communicated with the second end 553 of this third flow channel (that is, the second end 513 of the first flow channel is not directly communicated with the second end 533 of the second flow channel); the second end 533 of the second flow channel is communicated with the through hole 41, and the first end 531 of the second flow channel is only communicated with the first end 551 of this third flow channel (that is, the second end 533 of the second flow channel is not directly communicated with the first end 511 of the first flow channel). Thus, the cooling medium can flow in a bent manner between the first flow channel 51, the third flow channel 55 and the second flow channel 53 (that is, the cooling medium sequentially flows through the first end 511 of the first flow channel, the second end 513 of the first flow channel, the second end 553 of the third flow channel, the first end 551 of the third flow channel, the first end 531 of the second flow channel and the second end 533 of the second flow channel), ensuring that each layer of the battery module 20 can be in contact with the cooling medium, increasing the heat exchange area, and thus improving the cooling effect of the cooling medium on the battery module 20.

[0087] Please refer to Figure 4 , in some embodiments, when the inlet 101 and the outlet 102 are arranged on the same side of the housing body 10 in the first direction X, the first end 511 of the first flow channel is communicated with the communication hole 31, the second end 513 of the first flow channel is only communicated with the second end 553 of the adjacent third flow channel, the first end 531 of the second flow channel is communicated with the through hole 41, and the second end 533 of the second flow channel is only communicated with the second end 553 of the adjacent third flow channel.

[0088] As can be seen from the above, the inlet 101 and the outlet 102 are provided on the same side of the housing body 10 in the first direction X. Then, the number of battery cell modules is odd, and the number of the third flow channels 55 is even. Exemplarily, when the number of battery cell modules is three, the number of the third flow channels 55 is two (hereinafter referred to as flow channel one and flow channel two). Then, the first end 511 of the first flow channel is communicated with the communication hole 31, and the second end 513 of the first flow channel is only communicated with the second end of flow channel one (that is, the second end 513 of the first flow channel is not directly communicated with the second end of flow channel two and the second end 533 of the second flow channel); the first end 531 of the second flow channel is communicated with the guiding through hole 41, and the second end 533 of the second flow channel is only communicated with the first end of flow channel two (that is, the second end 533 of the second flow channel is not directly communicated with the second end of flow channel one and the second end 513 of the first flow channel). In this way, the cooling medium can flow in a bent manner among the first flow channel 51, flow channel one 50, flow channel two 50 and the second flow channel 53 (that is, the cooling medium sequentially flows through the first end 511 of the first flow channel, the second end 513 of the first flow channel, the second end of flow channel one, the first end of flow channel one, the first end of flow channel two, the second end of flow channel two, the second end 533 of the second flow channel and the first end 531 of the second flow channel), ensuring that each layer of the battery module 20 can be in contact with the cooling medium, increasing the heat exchange area, and thus improving the cooling effect of the cooling medium on the battery module 20.

[0089] Please refer to Figure 3 or Figure 4 , in some embodiments, a flow gap 60 is formed between the battery module 20 and the peripheral wall 113 of the box body 11.

[0090] Specifically, in some embodiments, both the first flow guide 30 and the second flow guide 40 are disposed in the flow gap 60. In the first direction X, a flow gap 60 (hereinafter referred to as the first flow gap) is formed between the battery module 20 and the first side 103 of the housing body 10, and a flow gap 60 (hereinafter referred to as the second flow gap) is formed between the battery module 20 and the second side 104 of the housing body 10. Among them, the first end 511 of the first flow channel, the first end 531 of the second flow channel and the first end 551 of the third flow channel are all communicated with the first flow gap; the second end 513 of the first flow channel, the second end 533 of the second flow channel and the second end 553 of the third flow channel are all communicated with the second flow gap.

[0091] Further, in some embodiments, the battery housing 110 further includes a barrier member 70 disposed in the flow gap 60. The barrier member 70 is configured to connect the first flow channel 51 only to the adjacent third flow channel 55, and the barrier member 70 is also configured to connect the second flow channel 53 only to the adjacent third flow channel 55. Wherein, the arrangement of the barrier member 70 can ensure that the cooling medium can bend and flow in the housing body 10, so that each layer of the battery module 20 can be in contact with the cooling medium, increasing the heat exchange area, and thus enhancing the cooling effect of the cooling medium on the battery module 20.

[0092] In some embodiments, a stop block is disposed in the flow gap 60. One end of the stop block is connected to the housing body 10, and the other end is connected to the battery module 20. The stop block is the barrier member 70. In other embodiments, the barrier member 70 is the top wall of the second flow deflector 40 in the height direction Z of the housing body 10 ( Figure 3 the side wall of the uppermost end of the second flow deflector 40).

[0093] Specifically, please refer to Figure 3 , in some embodiments, when the inlet 101 and the outlet 102 are disposed on opposite sides of the housing body 10 in the first direction X, the first flow deflector 30 is disposed in the first flow gap, and the second flow deflector 40 is disposed in the second flow gap.

[0094] Exemplarily, when there are two cell modules, the first flow deflector 30 is disposed in the first flow gap, and the second flow deflector 40 is disposed in the second flow gap. In this case, the barrier member 70 is disposed in the second flow gap so that the second end 513 of the first flow channel can only communicate with the second end 553 of the third flow channel through the second flow gap, and cannot communicate with the second end 533 of the second flow channel through the second flow gap. Thereby, it can be ensured that the cooling medium can bend and flow along the first flow channel 51, the second flow channel 53, and the third flow channel 55, so as to ensure that each layer of the battery module 20 can be in contact with the cooling medium, increasing the heat exchange area, and enhancing the cooling effect of the cooling medium on the battery module 20. It can be understood that in this embodiment, the barrier member 70 is the top wall of the second flow deflector 40 in the height direction Z of the housing body 10.

[0095] Please refer to Figure 4 , in other embodiments, when the inlet 101 and the outlet 102 are disposed on the same side of the housing body 10 in the first direction X, both the first flow deflector 30 and the second flow deflector 40 are disposed in the first flow gap; or, both the first flow deflector 30 and the second flow deflector 40 are disposed in the second flow gap.

[0096] Exemplarily, when the battery cell module includes three, both the first flow guide 30 and the second flow guide 40 are disposed in the first flow gap. In this case, the barrier member 70 is disposed in the second flow gap, so that the second end 513 of the first flow channel can only communicate with the second end of the first flow channel through the second flow gap, and cannot communicate with the second end of the second flow channel and the second end 533 of the second flow channel through the second flow gap; the barrier member 70 is also disposed in the first flow gap, so that the first end of the first flow channel can only communicate with the first end of the second flow channel through the first flow gap, and cannot communicate with the first end 531 of the second flow channel through the first flow gap. Thus, it can be ensured that the cooling medium can flow in a bent manner along the first flow channel 51, the second flow channel 53, and the third flow channel 55, so as to ensure that each layer of the battery module 20 can be in contact with the cooling medium, increase the heat exchange area, and improve the cooling effect of the cooling medium on the battery module 20. It can be understood that in this embodiment, the barrier member 70 is a block disposed in the second flow gap, and the barrier member 70 is the top wall of the second flow guide 40 in the height direction Z of the housing body 10.

[0097] Please refer to Figure 1 , Figure 2 and Figure 5 , in some embodiments, the first flow guide 30 is disposed between the first side 103 of the housing body 10 and the battery module 20. The battery housing 110 further includes a seal 80, and the seal 80 is disposed between the first flow guide 30 and the first side 103 of the housing body 10 to seal the gap between the first flow guide 30 and the first side 103 of the housing body 10.

[0098] Specifically, the first flow guide 30 is disposed between the first side 103 of the housing body 10 and the battery module 20, that is, the first flow guide 30 is disposed in the flow gap 60. Wherein, if there is a gap between the first flow guide 30 and the first side 103 of the housing body 10, during the process of the cooling medium flowing into the first flow channel 51, the cooling medium will leak through the gap between the first flow guide 30 and the first side 103 of the housing body 10, resulting in a decrease in the amount of the cooling medium entering the first flow channel 51, and further affecting the cooling effect of the cooling medium on the battery module 20. Therefore, the setting of the seal 80 can prevent the cooling medium from leaking through the gap between the first flow guide 30 and the first side 103 of the housing body 10, ensure the amount of the cooling medium entering the first flow channel 51, and thus improve the cooling effect of the cooling medium on the battery module 20.

[0099] In some embodiments, the seal 80 is disposed between the first flow guide 30 and the battery module 20 to seal the gap between the first flow guide 30 and the battery module 20.

[0100] If there is a gap between the first deflector 30 and the battery module 20, during the process of the cooling medium flowing into the first flow channel 51, the cooling medium will leak through the gap between the first deflector 30 and the battery module 20, resulting in a decrease in the amount of the cooling medium entering the first flow channel 51, and further affecting the cooling effect of the cooling medium on the battery module 20. Thus, the setting of the seal 80 can prevent the cooling medium from leaking through the gap between the first deflector 30 and the battery module 20, ensure the amount of the cooling medium entering the first flow channel 51, and thereby improve the cooling effect of the cooling medium on the battery module 20.

[0101] Please refer to Figure 1 , Figure 2 and Figure 6 , in some embodiments, the second deflector 40 is disposed between the second side 104 of the housing body 10 and the battery module 20, and the seal 80 is disposed between the second deflector 40 and the second side 104 of the housing body 10 to seal the gap between the second deflector 40 and the second side 104 of the housing body 10.

[0102] Specifically, the second deflector 40 is disposed between the second side 104 of the housing body 10 and the battery module 20, that is, the second deflector 40 is disposed in the flow gap 60. Among them, if there is a gap between the second deflector 40 and the second side 104 of the housing body 10, then, in combination with Figure 3 , in addition to being able to communicate with the third flow channel 55, the first flow channel 51 can also communicate with the second flow channel 53 through the gap between the second deflector 40 and the second side 104 of the housing body 10; or, in combination with Figure 4 , in addition to being able to communicate with the second flow channel, the first flow channel can also communicate with the second flow channel 53 through the gap between the second deflector 40 and the second side 104 of the housing body 10. In this way, it will cause the cooling medium to be unable to bend and flow in the housing body 10, resulting in the cooling medium being unable to contact each layer of the battery module 20, and further affecting the cooling effect of the cooling medium on the battery module 20. Thus, the setting of the seal 80 can prevent the cooling medium from leaking through the gap between the second deflector 40 and the second side 104 of the housing body 10, so as to ensure that the cooling medium can bend and flow along the first flow channel 51, the second flow channel 53 and the third flow channel 55, and further improve the cooling effect of the cooling medium on the battery module 20.

[0103] In some embodiments, the seal 80 is disposed between the second deflector 40 and the battery module 20 to seal the gap between the second deflector 40 and the battery module 20.

[0104] If there is a gap between the second deflector 40 and the battery module 20, then, in combination with Figure 3, in addition to being able to communicate with the third flow channel 55, the first flow channel 51 can also communicate with the second flow channel 53 through the gap between the second flow guide 40 and the battery module 20; or, please refer to Figure 4 , in addition to being able to communicate with the second flow channel, the first flow channel can also communicate with the second flow channel 53 through the gap between the second flow guide 40 and the battery module 20. This will cause the cooling medium to be unable to bend and flow in the housing body 10, resulting in the cooling medium being unable to contact each layer of the battery module 20, thereby affecting the cooling effect of the cooling medium on the battery module 20. Therefore, the setting of the seal 80 can prevent the cooling medium from leaking through the gap between the second flow guide 40 and the battery module 20, ensuring that the cooling medium can bend and flow along the first flow channel 51, the second flow channel 53, and the third flow channel 55, and thus improving the cooling effect of the cooling medium on the battery module 20.

[0105] In some embodiments, the thickness of the seal 80 ranges from [3 mm, 7 mm]. Specifically, in some embodiments, the thickness of the seal 80 can be any value among 3 mm, 4 mm, 5 mm, 6 mm, and 7 mm or any value between any two of these values.

[0106] If the thickness of the seal 80 is less than 3 mm, the seal 80 is easily damaged, affecting the sealing effect; if the thickness of the seal 80 is greater than 7 mm, the size of the seal 80 is relatively large, which will cause the seal 80 to occupy a relatively large space within the housing body 10, being unfavorable for the miniaturization of the battery device 100. In some embodiments, the thickness of the seal 80 ranges from [3 mm, 7 mm]. Thus, on the one hand, it can reduce the possibility of the seal 80 being damaged and ensure the sealing effect of the seal 80; on the other hand, it can prevent the seal 80 from occupying a large space, which is beneficial to the miniaturization of the battery device 100.

[0107] It should be noted that, in some embodiments, the material of the seal 80 includes but is not limited to rubber, silica gel, and plastic, etc. Among them, rubber includes but is not limited to nitrile rubber, silicone rubber, and ethylene propylene diene monomer rubber, etc. In some embodiments, the seal 80 and the first flow guide 30 can be combined together by an irreversible connection method, and the irreversible connection method includes but is not limited to bonding or welding, etc.; similarly, the seal 80 and the second flow guide 40 can be combined together by an irreversible connection method, and the irreversible connection method includes but is not limited to bonding or welding, etc. In other embodiments, the seal 80 and the first flow guide 30 can be combined together by a detachable connection method, and the detachable connection method includes but is not limited to bolt connection or snap connection, etc.; similarly, the seal 80 and the second flow guide 40 can be combined together by a detachable connection method, and the detachable connection method includes but is not limited to bolt connection or snap connection, etc.

[0108] Please refer to Figure 1 and Figure 2 In some embodiments, in the second direction Y, the housing body 10 includes opposite third side 105 and fourth side 106, and the battery housing 110 further includes a blocking member 90 disposed between the first deflector 30 and the third side 105 and the fourth side 106 of the housing body 10 to seal the gap between the first deflector 30 and the third side 105 and the fourth side 106 of the housing body 10.

[0109] If there is a gap between the first deflector 30 and the third side 105 and the fourth side 106 of the housing body 10, during the process of the cooling medium flowing into the first flow channel 51, the cooling medium will leak through the gap between the first deflector 30 and the third side 105 and the fourth side 106 of the housing body 10, resulting in a decrease in the amount of the cooling medium entering the first flow channel 51, and further affecting the cooling effect of the cooling medium on the battery module 20. Thus, the setting of the seal 80 can prevent the cooling medium from leaking through the gap between the first deflector 30 and the third side 105 and the fourth side 106 of the housing body 10, ensure the amount of the cooling medium entering the first flow channel 51, and thereby improve the cooling effect of the cooling medium on the battery module 20.

[0110] In some embodiments, the blocking member 90 is disposed between the second deflector 40 and the third side 105 and the fourth side 106 of the housing body 10 to seal the gap between the second deflector 40 and the third side 105 and the fourth side 106 of the housing body 10.

[0111] If there is a gap between the second deflector 40 and the third side 105 and the fourth side 106 of the housing body 10, then, in combination with Figure 3 in addition to being able to communicate with the third flow channel 55, the first flow channel 51 can also communicate with the second flow channel 53 through the gap between the second deflector 40 and the third side 105 and the fourth side 106 of the housing body 10; or, in combination with Figure 4, in addition to being able to communicate with the second flow channel, the first flow channel can also communicate with the second flow channel 53 through the gap between the third side 105 and the fourth side 106 of the housing body 10 via the second diverter 40. This will cause the cooling medium to be unable to flow in a bent manner within the housing body 10, resulting in the cooling medium being unable to contact each layer of the battery module 20, thereby affecting the cooling effect of the cooling medium on the battery module 20. Thus, the provision of the blocking member 90 can prevent the cooling medium from leaking through the gap between the third side 105 and the fourth side 106 of the housing body 10 via the second diverter 40, ensuring that the cooling medium can flow in a bent manner along the first flow channel 51, the second flow channel 53, and the third flow channel 55, and thereby enhancing the cooling effect of the cooling medium on the battery module 20.

[0112] It should be noted that, in some embodiments, the material of the blocking member 90 includes but is not limited to rubber, silicone, plastic, etc. Among them, rubber includes but is not limited to nitrile rubber, silicone rubber, ethylene propylene diene monomer rubber, etc. Exemplarily, the blocking member 90 can be a foamed rubber block.

[0113] Please refer to Figure 1 and Figure 2 , in some embodiments, the housing body 10 is provided with a signal line interface 107 and a power line interface 108, and the signal line interface 107 and the power line interface 108 are respectively located on opposite sides of the housing body 10 in the second direction Y.

[0114] Among them, the signal line interface 107 is a structure for electrically connecting a signal line. In this way, the battery device 100 can achieve signal transmission through the signal line, and the signals include but are not limited to the temperature, current, or voltage of the battery device 100, etc. Among them, the signal line can include but is not limited to a voltage acquisition signal branch line, a current acquisition signal branch line, a communication signal branch line, and a temperature sensing signal branch line, etc.

[0115] The power line interface 108 is a structure for electrically connecting a power line. In this way, the battery device 100 can achieve the input and output of electrical energy through the power line. The power line interface 108 includes a positive electrode interface 1083 and a negative electrode interface 1081. Among them, the arrangement of the positive electrode interface 1083 and the negative electrode interface 1081 can be spaced apart along the height direction Z of the housing body 10. Specifically, it can be that the positive electrode interface 1083 is closer to the top of the housing body 10 in the height direction Z of the housing body 10, or it can be that the positive electrode interface 1083 is closer to the bottom of the housing body 10 in the height direction Z of the housing body 10.

[0116] Among them, the signal line interface 107 and the power line interface 108 are respectively located on opposite sides of the housing body 10 in the length direction Y. Thus, the signal line and the power line can be separated in the second direction Y, preventing mutual interference between the signal line and the power line, and ensuring the normal operation of the battery device 100.

[0117] In one example, one of the signal line interface 107 and the power line interface 108 is disposed on the third side 105 of the housing body 10, and the other is disposed on the fourth side 106 of the housing body 10. In another example, both the signal line interface 107 and the power line interface 108 are disposed on the first side 103 of the housing body 10, and are respectively located at opposite ends of the first side 103 of the housing body 10 in the second direction Y. In yet another example, both the signal line interface 107 and the power line interface 108 are disposed on the second side 104 of the housing body 10, and are respectively located at opposite ends of the second side 104 of the housing body 10 in the second direction Y.

[0118] 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 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.

[0119] 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, several modifications and improvements can be made without departing from the concept of the present application, 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 battery housing (110), characterized in that: include: A shell body (10), the shell body (10) being suitable for accommodating a battery module (20), a flow channel (50) being formed inside the battery module (20) and / or between the battery module (20) and the shell body (10), the flow channel (50) being used for allowing a cooling medium to flow inside the shell body (10), and the shell body (10) being provided with an inlet (101); and A first flow guide (30), wherein the first flow guide (30) is disposed in the shell body (10) and is connected to both the inlet (101) and the flow channel (50), and the first flow guide (30) is used to allow the cooling medium flowing into the shell body (10) from the inlet (101) to flow to the flow channel (50).

2. The battery housing (110) according to claim 1, characterized in that: The flow channels (50) include a plurality of flow channels (50), the plurality of flow channels (50) are layered in the height direction of the shell body (10), and the plurality of flow channels (50) are used for allowing the cooling medium to flow in a curved manner within the shell body (10).

3. The battery housing (110) according to claim 1 or 2, characterized in that: The shell body (10) is also provided with an outlet (102), and the battery housing (110) further includes a second flow guide (40), the second flow guide (40) being arranged in the shell body (10) and being connected to both the outlet (102) and the flow channel (50), the second flow guide (40) being used for allowing the cooling medium in the flow channel (50) to flow out of the shell body (10) through the outlet (102).

4. The battery housing (110) according to claim 3, characterized in that: In the height direction of the shell body (10), the height of the inlet (101) is higher than the height of the outlet (102).

5. The battery housing (110) according to claim 4, characterized in that: The ratio of the height of the inlet (101) to the height of the outlet (102) is in the range of [2.5, 3.5].

6. The battery housing (110) according to claim 3, characterized in that: The inlet (101) and the outlet (102) are arranged on the same side of the shell body (10) in the first direction; or The inlet (101) and the outlet (102) are arranged on opposite sides of the shell body (10) in a first direction; Wherein, the first direction is perpendicular to the height direction of the shell body (10).

7. The battery housing (110) according to claim 3, characterized in that: The shell body (10) comprises a box body (11) and a cover body (13) mounted on the box body (11); the flow channel (50) comprises a first flow channel (51) formed between the battery module (20) and the cover body (13), and a second flow channel (53) formed between the battery module (20) and the bottom wall (111) of the box body (11); The first flow guide (30) is provided with a connecting hole (31), and the connecting hole (31) is correspondingly connected to the first flow channel (51); the second flow guide (40) is provided with a conducting hole (41), and the conducting hole (41) is correspondingly connected to the second flow channel (53).

8. The battery housing (110) according to claim 7, characterized in that: The battery module (20) includes at least one battery cell module, the flow channel (50) further includes a third flow channel (55) formed by gaps between adjacent battery cell modules, and in a first direction, the flow channel (50) includes a first end and a second end that are opposite to each other, and the first direction is perpendicular to a height direction of the shell body (10); When the inlet (101) and the outlet (102) are arranged on opposite sides of the shell body (10) in the first direction, the first end (511) of the first flow channel is connected to the connecting hole (31), the second end (513) of the first flow channel (51) is only connected to the second end (553) of the adjacent third flow channel, the second end (533) of the second flow channel is connected to the conducting hole (41), and the first end (531) of the second flow channel is only connected to the first end (551) of the adjacent third flow channel.

9. The battery housing (110) according to claim 7, characterized in that: The battery module (20) includes at least one battery cell module, the flow channel (50) further includes a third flow channel (55) formed by gaps between adjacent battery cell modules, and in a first direction, the flow channel (50) includes a first end and a second end that are opposite to each other, and the first direction is perpendicular to a height direction of the shell body (10); When the inlet (101) and the outlet (102) are arranged on the same side of the shell body (10) in the first direction, the first end (511) of the first flow channel is connected to the connecting hole (31), the second end (513) of the first flow channel is connected only to the second end (553) of the adjacent third flow channel, the first end (531) of the second flow channel is connected to the conducting hole (41), and the second end (533) of the second flow channel is connected only to the second end (553) of the adjacent third flow channel.

10. The battery housing (110) according to claim 8 or 9, characterized in that: A flow gap (60) is formed between the battery module (20) and the peripheral wall (113) of the box body (11), and the battery housing (110) further includes a barrier (70), which is arranged in the flow gap (60). The barrier (70) is used to enable the first flow channel (51) to communicate only with the adjacent third flow channel (55), and the barrier (70) is also used to enable the second flow channel (53) to communicate only with the adjacent third flow channel (55).

11. The battery housing (110) according to claim 10, characterized in that: A block is provided in the flow gap (60), one end of the block is connected to the shell body (10), and the other end is connected to the battery module (20), and the block is the barrier (70); and / or The blocking member (70) is the top wall of the second flow guide (40) in the height direction of the shell body (10).

12. The battery housing (110) according to claim 1, characterized in that: In a first direction, the shell body (10) includes a first side (103) and a second side (104) opposite to each other, the first flow director (30) is arranged between the first side (103) of the shell body (10) and the battery module (20), the first direction is perpendicular to the height direction of the shell body (10), and the battery housing (110) further includes a sealing member (80), The sealing member (80) is disposed between the first deflector (30) and the first side (103) of the shell body (10) to seal a gap between the first deflector (30) and the first side (103) of the shell body (10); and / or The sealing member (80) is disposed between the first flow director (30) and the battery module (20) to seal a gap between the first flow director (30) and the battery module (20).

13. The battery housing (110) according to claim 12, characterized in that: In the second direction, the shell body (10) includes a third side (105) and a fourth side (106) opposite to each other, and the battery shell (110) also includes a blocking member (90), and the blocking member (90) is arranged between the first flow guide (30) and the third side (105) of the shell body (10) and the fourth side (106) of the shell body (10) to seal the gap between the first flow guide (30) and the third side (105) of the shell body (10) and the fourth side (106) of the shell body (10), and the second direction is perpendicular to the first direction and the height direction of the shell body (10).

14. The battery housing (110) according to claim 1, characterized in that: In a first direction, the shell body (10) includes a first side (103) and a second side (104) opposite to each other, the second flow director (40) of the battery housing (110) is arranged between the second side (104) of the shell body (10) and the battery module (20), the first direction is perpendicular to the height direction of the shell body (10), and the battery housing (110) further includes a sealing member (80), The sealing member (80) is disposed between the second deflector (40) and the second side (104) of the shell body (10) to seal a gap between the second deflector (40) and the second side (104) of the shell body (10); and / or The sealing member (80) is disposed between the second flow director (40) and the battery module (20) to seal a gap between the second flow director (40) and the battery module (20).

15. The battery housing (110) according to claim 14, characterized in that: In the second direction, the shell body (10) includes a third side (105) and a fourth side (106) opposite to each other, and the battery shell (110) also includes a blocking member (90), and the blocking member (90) is arranged between the second flow guide (40) and the third side (105) of the shell body (10) and the fourth side (106) of the shell body (10) to seal the gap between the second flow guide (40) and the third side (105) of the shell body (10) and the fourth side (106) of the shell body (10), and the second direction is perpendicular to the first direction and the height direction of the shell body (10).

16. The battery housing (110) according to claim 12 or 14, characterized in that: The thickness of the sealing member (80) ranges from 3 mm to 7 mm.

17. The battery housing (110) according to claim 1, characterized in that: The shell body (10) is provided with a signal line interface (107) and a power line interface (108), and the signal line interface (107) and the power line interface (108) are respectively located on opposite sides of the shell body (10) in the second direction.

18. A battery device (100), characterized in that: include: The battery housing (110) according to any one of claims 1 to 17; and A battery module (20), wherein the battery module (20) is arranged in the battery housing (110).

19. An electrical device (1000), characterized in that: include: The battery device (100) as claimed in claim 18.

20. An energy storage system, characterized in that: include: The battery device (100) as claimed in claim 18.

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