Box assembly and battery

Abstract

The utility model provides a kind of box assembly and battery, the box assembly includes liquid cooling plate, liquid cooling plate is equipped with liquid cooling cavity and isolation chamber;Among them, isolation chamber is arranged at the side of liquid cooling cavity, and is arranged with interval with liquid cooling cavity. By being provided with isolation chamber on liquid cooling cavity, negative influence generated to liquid cooling cavity in welding or processing process can be limited in isolation chamber, to guarantee the inner wall of liquid cooling cavity smooth, cooling medium flow distribution uniform, to improve the cooling efficiency of liquid cooling plate and the long-term operation stability of battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a housing assembly and a battery. Background Technology

[0002] With the rapid development of new energy vehicles and the energy storage industry, the thermal management performance of batteries plays a crucial role in ensuring battery system safety, extending service life, and improving vehicle range. As one of the most widely used cooling components in batteries, the structural design and manufacturing quality of the internal coolant flow channels of the liquid cooling plate directly determine its cooling performance and system reliability.

[0003] Currently, battery thermal management systems typically employ a liquid cooling plate at the bottom of the battery, with the battery module in contact with the plate for heat dissipation. In related technologies, the liquid cooling plate often uses a single-layer cavity structure, requiring inlet and outlet pipes welded to the base plate to facilitate coolant circulation within the flow channel. However, due to the relatively thin base plate, back-through is easily generated during the welding process of the inlet and outlet pipes. This occurs when molten metal or the heat-affected zone penetrates into the inner wall of the flow channel, forming protrusions or burrs. These defects not only increase flow resistance and cause uneven coolant flow distribution but can also lead to channel blockage due to burr detachment, thereby affecting the cooling performance of the liquid cooling plate and the long-term operational stability of the battery. Utility Model Content

[0004] This utility model provides a housing assembly and a battery. By setting an isolation cavity on one side of the liquid cooling plate, the negative impact that may be generated on the liquid cooling cavity during welding or processing is limited to the isolation cavity, thereby ensuring that the inner wall of the liquid cooling cavity is smooth and the flow of the cooling medium is uniform, thereby improving the cooling performance of the liquid cooling plate and the long-term operational stability of the battery.

[0005] To achieve the above objectives, according to a first aspect of the present invention, a housing assembly is provided, comprising:

[0006] The liquid-cooled plate is equipped with a liquid-cooled cavity and an isolation cavity;

[0007] The isolation chamber is located on one side of the liquid cooling chamber and is spaced apart from the liquid cooling chamber.

[0008] The liquid-cooled plate is equipped with a liquid-cooled cavity and an isolation cavity;

[0009] The isolation chamber is located on one side of the liquid cooling chamber and is spaced apart from the liquid cooling chamber.

[0010] According to one embodiment of the present invention, the housing assembly includes a base plate for supporting the battery cell;

[0011] The liquid cooling plate serves as the base plate, and the isolation cavity is disposed on the liquid cooling cavity along the thickness direction of the liquid cooling plate.

[0012] According to one embodiment of the present invention, a plurality of reinforcing members are provided in the isolation cavity, and the plurality of reinforcing members are arranged at intervals along a first direction, and the first direction intersects the height direction of the liquid cooling plate.

[0013] Along the height direction of the liquid cooling plate, both ends of each reinforcing member are respectively connected to the opposite inner walls of the isolation cavity.

[0014] According to one embodiment of the present invention, the isolation cavity is filled with an isolation section, the isolation section having multiple isolation holes arranged in a honeycomb pattern.

[0015] According to one embodiment of the present invention, the housing further includes two isolation beams, which are connected to both sides of the bottom plate and arranged opposite to each other. The isolation beams are suitable for welding the crossbeams or longitudinal beams of the housing assembly and do not overlap with the liquid cooling cavity.

[0016] The base plate includes the liquid cooling cavity, and the isolation cavity is located between the two isolation beams.

[0017] According to one embodiment of the present invention, the surface roughness of the inner wall of the liquid cooling cavity is less than the surface roughness of the inner wall of the isolation cavity.

[0018] According to one embodiment of the present invention, the surface roughness of the inner wall of the liquid cooling channel is less than or equal to 6.3 micrometers.

[0019] According to one embodiment of the present invention, the liquid cooling cavity and the isolation cavity are integrally formed.

[0020] According to one embodiment of the present invention, the liquid cooling plate is welded with an inlet pipe and an outlet pipe, both of which are located on the side of the isolation cavity away from the liquid cooling cavity, and both are connected to the liquid cooling cavity.

[0021] According to a second aspect of the present invention, a battery is provided, comprising the housing assembly described in the first aspect embodiment.

[0022] The beneficial effects of this utility model embodiment:

[0023] This invention provides a housing assembly and a battery. The housing assembly includes a liquid-cooled plate, within which a liquid-cooled cavity and an isolation cavity are provided. The isolation cavity is located on one side of the liquid-cooled cavity and is spaced apart from it. By providing an isolation cavity on the liquid-cooled cavity, the negative impacts on the liquid-cooled cavity during welding or processing can be confined within the isolation cavity, thereby ensuring a smooth inner wall of the liquid-cooled cavity and uniform distribution of the cooling medium flow, thus improving the cooling efficiency of the liquid-cooled plate and the long-term operational stability of the battery. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] To gain a more complete understanding of this utility model and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0026] Figure 1 This is a schematic diagram of a first structure of the housing assembly provided in an embodiment of the present utility model;

[0027] Figure 2 Provided for the embodiments of this utility model Figure 1 A front view of the middle housing assembly;

[0028] Figure 3 This is a schematic diagram of a second structure of the housing assembly provided in an embodiment of the present utility model;

[0029] Figure 4 This is a top view of the isolation section provided in an embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram of a third structure of the housing assembly provided in an embodiment of the present utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Box assembly; 1A-Receiving cavity; 1B-Base plate; 11-Liquid cooling plate; 111-Liquid cooling cavity; 1111-Cooling flow channel; 112-Isolation cavity; 1121-Opening; 12-Liquid inlet pipe; 13-Liquid outlet pipe; 14-Sealing adhesive; 15-Reinforcing member; 16-Isolation section; 161-Isolation hole; 17-Isolation beam; 171-Fixing groove; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0034] Please combine Figure 1 and Figure 2 ;in, Figure 1 This is a schematic diagram of a first structure of the housing assembly provided in an embodiment of the present utility model; Figure 2 Provided for the embodiments of this utility model Figure 1 A front view of the middle housing assembly. It should be noted that this diagram is for clear visualization of the liquid cooling chamber and isolation chamber structures. Figure 2 The sealing adhesive was not drawn in the diagram.

[0035] like Figure 1 and Figure 2 As shown, this embodiment provides a housing assembly 1, which includes a receiving cavity 1A for installing a battery module. The receiving cavity 1A provides a stable installation space for the battery module and simultaneously achieves sealing and protection around the battery module, thereby ensuring the safety and stability of the battery module during transportation and operation.

[0036] The housing assembly 1 includes a liquid cooling plate 11, which has a liquid cooling cavity 111 and an isolation cavity 112. The liquid cooling cavity 111 has a cooling channel 1111 for transporting the cooling medium. The isolation cavity 112 is located on one side of the liquid cooling cavity 111 and is spaced apart from the liquid cooling cavity 111. The isolation cavity 112 is used to bear the process defects caused by molten metal, heat-affected zone or mechanical stress during the welding or processing of the liquid cooling plate 11, thereby improving the forming accuracy and structural stability of the liquid cooling cavity 111.

[0037] It should be noted that the cooling medium can be a coolant, refrigerant, or other medium capable of regulating the cell temperature; the specific type is not limited. In practical applications, the cooling medium is in a circulating state, that is, it enters the liquid cooling chamber 111 through the inlet and outlet pipes of the external cooling system, exchanges heat with the cell, and is then discharged, thereby achieving continuous dynamic temperature control.

[0038] It is understood that by providing an isolation cavity 112 on the liquid cooling cavity 111, the negative impacts on the liquid cooling cavity 111 during welding or processing (such as molten metal penetration, heat-affected zone deformation, and increased surface roughness) can be confined within the isolation cavity 112. This ensures that the inner wall of the liquid cooling cavity 111 is smooth, the cooling medium flow distribution is uniform, the cooling efficiency of the liquid cooling plate 11 is improved, and the thermal management performance of the battery module is improved, thereby extending the service life of the battery cell.

[0039] Furthermore, the liquid cooling cavity 111 and the isolation cavity 112 are integrally formed, meaning that the liquid cooling cavity 111 and the isolation cavity 112 are formed simultaneously during the extrusion molding or casting process of the liquid cooling plate 11, without the need for additional welding or bonding processes. It can be understood that by integrally forming the liquid cooling cavity 111 and the isolation cavity 112, the connection between the liquid cooling cavity 111 and the isolation cavity 112 is more stable, thereby improving the structural strength of the liquid cooling plate 11. In addition, by integrally forming the liquid cooling cavity 111 and the isolation cavity 112, the manufacturing process can be simplified, the number of parts can be reduced, the production efficiency of the housing assembly 1 can be improved, and the assembly cost can be reduced.

[0040] Specifically, the liquid cooling plate 11 can be formed from a single aluminum profile through a one-time extrusion process. The aluminum profile is extruded in one step to obtain a substrate with an "I" or "Sun" shaped cross section. The substrate includes a first cavity located in the lower layer and a second cavity located in the upper layer. The first cavity and the second cavity are physically separated by a web plate. The thickness of the web plate is greater than or equal to 1 mm and less than or equal to 1.5 mm.

[0041] The first cavity can be a liquid cooling cavity 111, and the second cavity can be an isolation cavity 112. The inner walls of the first cavity and the second cavity are both formed by extruding aluminum profiles in one piece without any welding heat input. This avoids the molten metal, heat-affected zone, or local stress generated during the welding process at the top of the first cavity from directly acting on the inner wall of the second cavity, ensuring that the inner wall of the liquid cooling channel is smooth and reducing the flow resistance of the cooling medium. This ensures that the flow distribution of the cooling medium is uniform, thereby achieving efficient heat dissipation of the liquid cooling plate 11.

[0042] It should be noted that the liquid cooling cavity 111 and the isolation cavity 112 are integrally formed, and can directly use the current mature aluminum profile extrusion, cutting, bending and other processing technology, which has good mass production capability. This not only simplifies the manufacturing process of the liquid cooling plate 11, but also improves the structural strength and reliability of the liquid cooling plate 11, and provides a guarantee for the long-term stable operation of the battery.

[0043] Please continue to combine Figure 1 and Figure 2 In one embodiment, the isolation cavity 112 is disposed on one side of the liquid cooling cavity 111 along the thickness direction of the liquid cooling plate 11, and the isolation cavity 112 covers the liquid cooling cavity 111, thereby forming an isolation barrier on the liquid cooling plate 11 to prevent heat, molten metal or mechanical stress generated during welding or subsequent processing from directly acting on the liquid cooling cavity 111, thereby improving the integrity and stability of the internal structure of the liquid cooling cavity 111; wherein, in this embodiment, Figure 1 In the diagram, the first direction X is the width direction of the liquid cooling plate 11, the second direction Y is the length direction of the liquid cooling plate 11, and the third direction Z is the thickness direction of the liquid cooling plate 11.

[0044] Furthermore, the housing assembly 1 includes a base plate 1B for supporting the battery cell, wherein the liquid cooling plate 11 serves as the base plate 1B, thereby ensuring the liquid cooling function of the housing assembly 1, providing a stable support platform for the battery cell, reducing the number of parts in the housing assembly 1, and lowering the production cost of the housing assembly 1.

[0045] Specifically, the isolation cavity 112 is disposed on the liquid cooling cavity 111 along the thickness direction of the liquid cooling plate 11 and covers the surface of the liquid cooling cavity 111. This forms a transition buffer layer between the liquid cooling cavity 111 and the external structure, so that the heat, molten metal splashes and mechanical loads generated when welding beams, longitudinal beams or installing other structural components act on the isolation cavity 112 first, without directly affecting the inner wall of the flow channel of the liquid cooling cavity 111, thus avoiding the flow resistance caused by the back penetration of the liquid cooling cavity 111. At the same time, the isolation cavity 112 can also disperse the external stress of the liquid cooling plate 11, improving the impact resistance and service life of the liquid cooling plate 11.

[0046] Please continue to combine Figure 1 and Figure 2 In one embodiment, the liquid cooling plate 11 is welded with an inlet pipe 12 and an outlet pipe 13. The inlet pipe 12 and the outlet pipe 13 are both located on the side of the isolation cavity 112 away from the liquid cooling cavity 111. Thus, during the welding process of the inlet pipe 12 and the outlet pipe 13, the welding heat will not directly act on the liquid cooling cavity 111, avoiding problems such as molten metal infiltration, heat-affected zone deformation, or local surface roughness increase in the liquid cooling cavity 111.

[0047] Specifically, the liquid cooling plate 11 includes a liquid inlet and a liquid outlet, both of which are located on the side of the isolation cavity 112 away from the liquid cooling cavity 111, and both the liquid inlet and the liquid outlet are connected to the cooling channel 1111 within the liquid cooling cavity 111; wherein, the liquid inlet pipe 12 is connected to the liquid inlet, and the liquid outlet pipe 13 is connected to the liquid outlet, so that the cooling medium can enter the channel of the liquid cooling cavity 111 through the liquid inlet pipe 12, exchange heat with the battery cell in the liquid cooling cavity 111, and then be discharged through the liquid outlet pipe 13, thereby achieving circulating cooling.

[0048] It is understood that by arranging both the inlet pipe 12 and the outlet pipe 13 on the side of the isolation cavity 112 away from the liquid cooling cavity 111, the negative impacts on the liquid cooling cavity 111 during welding or processing (such as molten metal penetration, heat-affected zone deformation, and increased surface roughness) can be confined within the isolation cavity 112. This ensures that the inner wall of the liquid cooling cavity 111 is smooth, the cooling medium flow distribution is uniform, the cooling efficiency of the liquid cooling plate 11 is improved, and the thermal management performance of the battery module is improved, thus extending the service life of the battery cell.

[0049] Please continue to combine Figure 1 and Figure 2 In one embodiment, the housing assembly 1 further includes a sealing adhesive 14, which is disposed at both ends of the liquid cooling channel and is suitable for sealing the liquid cooling channel, thereby ensuring that the cooling medium can form a closed circulation channel in the liquid cooling cavity 111, avoiding leakage of the cooling medium during operation, and further improving the sealing reliability and safety of the liquid cooling plate 11.

[0050] Furthermore, the isolation cavity 112 has an opening 1121 at its end, which is suitable for connecting the isolation cavity 112 to the external environment. This allows excess molten metal, heat, or stress to be released to the external environment during the welding or processing of the liquid cooling plate 11, thereby preventing excess molten metal, heat, or stress from directly acting on the inner wall of the liquid cooling cavity 111 and preventing deformation, blockage, or increased roughness of the liquid cooling channel. At the same time, the opening 1121 of the isolation cavity 112 also facilitates subsequent maintenance, cleaning, or process testing, improving the maintainability of the housing assembly 1.

[0051] It should be noted that, in order to clearly demonstrate the structure of the liquid cooling cavity 111 and the isolation cavity 112, Figure 2 The sealing adhesive 14 is not shown in the figure. In practical applications, the sealing adhesive 14 is usually made of a sealing material that is resistant to high temperature and coolant corrosion. It can maintain stable sealing performance under long-term cyclic operation conditions, thereby ensuring the heat dissipation efficiency and operational safety of the battery under various working conditions.

[0052] Please continue to combine Figure 1 and Figure 2 In one embodiment, the surface roughness of the inner wall of the liquid cooling cavity 111 is less than that of the inner wall of the isolation cavity 112. By refining the inner wall of the liquid cooling cavity 111 during processing, the surface of the inner wall of the liquid cooling cavity 111 becomes smoother, thereby reducing the flow resistance of the cooling medium during flow, ensuring the uniformity of the flow distribution of the cooling medium, and improving the heat exchange efficiency. In contrast, the isolation cavity 112, as a buffer and load-bearing structure, has relatively low surface roughness requirements. Therefore, it does not require excessive processing in the manufacturing process, thereby reducing manufacturing costs while ensuring the strength of the liquid cooling plate 11.

[0053] Specifically, the surface roughness of the inner wall of the liquid cooling cavity 111 is less than or equal to 6.3 micrometers, thereby improving the flow stability of the cooling medium in the liquid cooling channel, avoiding turbulence, energy loss and local overheating caused by the surface roughness of the inner wall of the liquid cooling cavity 111, further improving the heat dissipation effect of the liquid cooling plate 11, and thus improving the thermal management performance and operational stability of the housing assembly 1 and the battery.

[0054] Please continue to combine Figure 1 and Figure 2 In one embodiment, a plurality of reinforcing members 15 are provided in the isolation cavity 112. The plurality of reinforcing members 15 are arranged at intervals along a first direction X, and the first direction X intersects the height direction of the liquid cooling plate 11. This allows the reinforcing members 15 to disperse external loads and welding stresses without affecting the flow of the cooling medium, thereby improving the structural strength and deformation resistance of the isolation cavity 112 and the liquid cooling plate 11. The first direction X can be the width direction of the liquid cooling plate 11.

[0055] Along the height direction of the liquid cooling plate 11, both ends of each reinforcing member 15 are respectively connected to the opposite inner wall of the isolation cavity 112, thereby preventing the isolation cavity 112 from collapsing or deforming due to external pressure or thermal stress, and improving the isolation cavity 112; at the same time, when the liquid cooling plate 11 serves as the base plate 1B supporting the battery cell, it can further enhance the load-bearing capacity of the base plate 1B, thereby ensuring the stability and reliability of the battery module during long-term operation.

[0056] Furthermore, the reinforcing member 15 can be made of aluminum, which is not only lightweight and has good thermal conductivity, but also ensures that the reinforcing member 15 has sufficient strength and rigidity. By setting the reinforcing member 15 in the isolation cavity 112 and extending it along the height direction of the liquid cooling plate 11, the two ends of each reinforcing member 15 are respectively fixedly connected to the opposite inner wall of the isolation cavity 112, thereby forming an effective support for the isolation cavity 112 and improving the structural strength and deformation resistance of the liquid cooling plate 11.

[0057] It is understood that when the liquid cooling plate 11 is subjected to external collision or vibration, the reinforcing member 15 can play a buffering role, preventing the impact force from acting directly on the inner wall of the liquid cooling cavity 111, preventing the cooling channel 1111 from deforming or becoming blocked due to local stress concentration, thereby improving the stability of the cooling medium in the liquid cooling channel.

[0058] Furthermore, the spaced arrangement of the multiple reinforcing members 15 can also reasonably divide the internal space of the isolation cavity 112, so that the absorption and release of excess molten metal, heat or stress in the isolation cavity 112 during welding or processing is more uniform, thereby avoiding the diffusion of defects caused by local concentration, and further improving the integrity and cooling efficiency of the liquid cooling cavity 111.

[0059] Specifically, the reinforcing member 15 can be integrally formed with the liquid cooling plate 11, that is, the reinforcing member 15 is formed simultaneously during the extrusion molding or casting process of the liquid cooling plate 11, without the need for additional welding or bonding processes. It can be understood that by integrally forming the reinforcing member 15 with the liquid cooling plate 11, the connection between the reinforcing member 15 and the inner wall of the isolation cavity 112 is more stable, thereby improving the bending and impact resistance of the isolation cavity 112. At the same time, by integrally forming the reinforcing member 15 with the liquid cooling plate 11, the manufacturing process can be simplified, the number of parts can be reduced, the production efficiency of the housing assembly 1 can be improved, and the assembly cost can be reduced.

[0060] Please combine Figure 3 and Figure 4 ;in, Figure 3 This is a schematic diagram of a second structure of the housing assembly provided in an embodiment of the present utility model; Figure 4 This is a top view of the isolation section provided in an embodiment of the present invention. In one embodiment, the isolation cavity 112 is filled with an isolation section 16, and the isolation section 16 has a plurality of isolation holes 161 arranged in a honeycomb pattern. This allows the isolation section 16 to trap excess welding slag, molten metal or impurities during welding or processing, causing them to accumulate in the isolation holes 161, thereby preventing them from directly impacting the inner wall of the liquid cooling cavity 111.

[0061] It should be noted that during welding or processing, molten metal, welding slag, or localized heat-affected zones may be generated above the liquid cooling plate 11. If these substances come into direct contact with the inner wall of the liquid cooling cavity 111, they may cause the surface of the inner wall of the liquid cooling cavity 111 to become rough, forming protrusions or burrs, increasing fluid resistance, affecting the uniform flow of the cooling medium, and thus reducing heat dissipation efficiency.

[0062] It is understood that by providing an isolation section 16 with honeycomb-shaped isolation holes 161 in the isolation cavity 112, welding slag or particles generated during processing will be adsorbed or trapped by the isolation holes 161 when they encounter the isolation section 16, instead of directly acting on the inner wall of the liquid cooling cavity 111. This reduces the risk of contamination and blockage of the liquid cooling cavity 111, ensures the smoothness of the inner wall of the liquid cooling cavity 111, and guarantees low flow resistance and uniform flow distribution of the cooling medium.

[0063] Furthermore, the isolation section 16 is disposed within the isolation cavity 112, and the honeycomb arrangement of the plurality of isolation holes 161 can enhance the structural strength of the isolation cavity 112, thereby reducing the direct impact on the liquid cooling plate 11 during welding or external force application. Both the isolation cavity 112 and the liquid cooling cavity 111 can maintain a stable shape, thereby improving the stability of the liquid cooling plate 11.

[0064] Please see Figure 5 This is a schematic diagram of a third structure of the box assembly provided in an embodiment of the present utility model. In one embodiment, the box assembly further includes two isolation beams 17, which are connected to the two sides of the base plate 1B and are arranged opposite to each other. The isolation beams 17 are suitable for welding the crossbeams or longitudinal beams of the box assembly 1 and do not overlap with the liquid cooling cavity 111, so as to avoid the crossbeams or longitudinal beams causing negative effects such as molten metal penetration, heat-affected zone deformation, and increased surface roughness to the liquid cooling cavity 111 during the welding process.

[0065] Furthermore, the base plate 1B includes the liquid cooling cavity 111, the isolation cavity 112 is located between the two isolation beams 17, and the orthographic projection of the isolation beam 17 on the base plate 1B does not overlap with the orthographic projection of the liquid cooling channel on the base plate 1B, so that the heat, welding slag or local stress generated when welding the crossbeam or longitudinal beam can be dispersed and buffered by the isolation cavity 112 and the isolation beam 17.

[0066] Specifically, the isolation beam 17 is provided with a fixing groove 171, which is suitable for welding the crossbeams or longitudinal beams of the box assembly 1; the material of the isolation beam 17 includes, but is not limited to, stainless steel. Stainless steel has high strength and good heat resistance, and can withstand local heat and mechanical stress when welding the crossbeams or longitudinal beams, thereby further ensuring the integrity of the inner wall of the liquid cooling cavity 111.

[0067] It should be noted that in related technologies, the housing assembly 1 typically includes a base plate 1B and crossbeams and longitudinal beams fixed to the base plate 1B. Both the crossbeams and longitudinal beams are fixedly connected to the base plate 1B by welding. In actual production, welding heat can easily be directly transferred to the base plate 1B, which may affect the inner wall of the liquid cooling cavity 111, leading to local deformation, molten metal infiltration, or increased surface roughness, thereby reducing the cooling performance of the liquid cooling plate 11.

[0068] It is understood that in this embodiment, by setting an isolation beam 17 on the base plate 1B, the isolation beam 17 is suitable for welding the crossbeams or longitudinal beams of the box assembly 1, and the isolation cavity 112 is located between the two isolation beams 17. When welding the crossbeams or longitudinal beams, the heat, welding slag or local stress generated can be dispersed and buffered by the isolation cavity 112 and the isolation beam 17, thereby protecting the integrity of the inner wall of the liquid cooling cavity 111, realizing smooth flow of cooling medium and uniform flow distribution, and improving the heat dissipation efficiency of the liquid cooling plate 11 and the structural stability of the box assembly 1.

[0069] This utility model provides a battery, which includes the housing assembly 1 and the battery module described in any of the above embodiments.

[0070] It is understood that the housing assembly 1 has been described in detail in the above embodiments and will not be repeated here; in particular, since the battery adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated here.

[0071] It should be noted that the type of battery can be flexibly selected according to the needs of the actual application scenario. The battery can be adapted to a variety of electrical devices, including but not limited to new energy vehicles, power tools, energy storage devices, etc.

[0072] Specifically, because the battery provided in this embodiment has the characteristics of integral molding of liquid cooling cavity 111 and isolation cavity 112, isolation of welding heat-affected zone, and smooth and uniform flow of internal cooling channel 1111, the battery can maintain stable thermal management performance under high power, long-term cycling or extreme temperature conditions, thereby extending cell life, improving battery efficiency and ensuring safety and reliability during use. Therefore, the electrical equipment can be at least one of vehicles, energy storage power supplies, consumer electronics, medical devices or smart city devices. In this embodiment, the specific type of electrical equipment is not limited and can be adapted and selected according to the actual application scenario.

[0073] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A housing assembly (1), characterized in that, include: The liquid cooling plate (11) is provided with a liquid cooling cavity (111) and an isolation cavity (112); The isolation chamber (112) is located on one side of the liquid cooling chamber (111) and is spaced apart from the liquid cooling chamber (111).

2. The housing assembly (1) according to claim 1, characterized in that, The housing assembly (1) includes a base plate (1B) for supporting the battery cells; The liquid cooling plate (11) is used as the base plate (1B), and the isolation cavity (112) is disposed on the liquid cooling cavity (111) along the thickness direction of the liquid cooling plate (11).

3. The housing assembly (1) according to claim 2, characterized in that, The isolation cavity (112) is provided with a plurality of reinforcing members (15), which are arranged at intervals along a first direction (X), and the first direction (X) intersects the height direction of the liquid cooling plate (11); Along the height direction of the liquid cooling plate (11), each of the reinforcing members (15) has its two ends connected to the opposite inner walls of the isolation cavity (112).

4. The housing assembly (1) according to claim 2, characterized in that, The isolation cavity (112) is filled with an isolation section (16), which has multiple isolation holes (161) arranged in a honeycomb pattern.

5. The housing assembly (1) according to claim 2, characterized in that, The enclosure also includes two isolation beams (17), which are connected to the two sides of the base plate (1B) and are arranged opposite to each other. The isolation beams (17) are suitable for welding the crossbeams or longitudinal beams of the enclosure assembly (1) and do not overlap with the liquid cooling cavity (111). The base plate (1B) includes the liquid cooling cavity (111), and the isolation cavity (112) is located between the two isolation beams (17).

6. The housing assembly (1) according to any one of claims 1 to 5, characterized in that, The surface roughness of the inner wall of the liquid cooling cavity (111) is less than the surface roughness of the inner wall of the isolation cavity (112).

7. The housing assembly (1) according to claim 6, characterized in that, The surface roughness of the inner wall of the liquid cooling cavity (111) is less than or equal to 6.3 micrometers.

8. The housing assembly (1) according to any one of claims 1 to 5, characterized in that, The liquid cooling cavity (111) and the isolation cavity (112) are integrally formed.

9. The housing assembly (1) according to any one of claims 1 to 5, characterized in that, The liquid cooling plate (11) is welded with an inlet pipe (12) and an outlet pipe (13). The inlet pipe (12) and the outlet pipe (13) are both located on the side of the isolation cavity (112) away from the liquid cooling cavity (111), and the inlet pipe (12) and the outlet pipe (13) are both connected to the liquid cooling cavity (111).

10. A battery, characterized in that, Includes the housing assembly (1) as described in any one of claims 1-9.

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