Battery pack housing and battery pack

Abstract

This application provides a battery pack housing and a battery pack. The battery pack housing includes a support frame and a cooling assembly. The support frame includes a frame and a connector assembly. The connector assembly is connected to the frame, and the frame has a flow channel. The connector assembly communicates with the flow channel. The cooling assembly is connected to the support frame and includes a channel plate and a cooling plate. The channel plate and the cooling plate surround a cooling channel. The channel plate has a connecting pipe that communicates with the cooling channel. The connecting pipe is inserted into the connector assembly to connect the flow channel and the cooling channel. This design improves the structural strength and sealing of the battery pack housing while reducing its weight, thus meeting the strength and sealing requirements under harsh environments such as vibration conditions and enhancing the safety and reliability of the battery pack.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery pack housing and a battery pack. Background Technology

[0002] With the development of the automotive industry, new energy vehicles are becoming increasingly popular. Among them, electric new energy vehicles store electrical energy through battery packs to power the electric motor that drives the vehicle. In order to ensure sufficient driving range, the battery pack is relatively heavy, and the battery pack needs to maintain its ambient temperature when it is working.

[0003] In related technologies, a battery pack typically includes a battery and a housing that encloses and carries the battery. The battery housing needs to maintain the ambient temperature during battery pack operation. In order to reduce the overall vehicle weight, the battery pack needs to be designed to be lightweight. Compared to traditional steel battery packs, the battery pack housing needs to be made of non-metallic lightweight materials to reduce the weight of the battery pack.

[0004] However, the current lightweight battery packs have low structural strength and poor sealing, which leads to safety hazards when the battery packs are subjected to vibration and impact. Summary of the Invention

[0005] This invention provides a battery pack housing and a battery pack to solve the technical problem that current lightweight battery packs have low structural strength and poor sealing, which leads to safety hazards when the battery pack is subjected to vibration and impact.

[0006] In a first aspect, this application provides a battery pack housing, which includes a support frame and a cooling assembly. The support frame includes a frame and a connector assembly, which is connected to the frame. The frame has a flow channel, and the connector assembly communicates with the flow channel. The cooling assembly is connected to the support frame and includes a channel plate and a cooling plate. The channel plate and the cooling plate surround a cooling channel, and the channel plate has a connecting pipe that communicates with the cooling channel. The connecting pipe is inserted into the connector assembly to make the flow channel communicate with the cooling channel.

[0007] The battery pack housing provided in this application improves the structural strength of the battery pack housing while reducing its weight through structural design of the load-bearing frame and cooling components. At the same time, the design of the cooperation method between the load-bearing frame and cooling components improves the sealing performance of the battery pack housing, so as to meet the strength and sealing requirements in harsh environments such as vibration conditions, thereby improving the safety and reliability of the battery pack.

[0008] As an optional implementation, the connector assembly may include a connecting seat, an elastic sealing sleeve, and a first sealing element. The connecting seat has a mounting hole that communicates with a flow channel. The elastic sealing sleeve is disposed in the mounting hole. The first sealing element is sleeved on the outside of the elastic sealing sleeve and abuts against the outer wall of the elastic sealing sleeve and the inner wall of the mounting hole, respectively.

[0009] As an optional implementation, the elastic sealing sleeve has a connecting hole, and the connecting tube is inserted into the connecting hole; the end of the connecting hole facing the inside of the mounting hole has a sealing part, and the sealing part fits against the outer wall of the connecting tube.

[0010] As an optional implementation, the sealing part is a rotating body, and the cross-sectional dimensions of the sealing part gradually decrease along the insertion direction of the connecting pipe. When the connecting pipe is inserted into the connecting hole, the sealing part folds outward toward the connecting hole and wraps around the circumferential outer wall of the connecting pipe.

[0011] As an optional implementation, the connector assembly further includes a second seal, a first sealing groove is provided on the connector seat, the first sealing groove is arranged around the mounting hole, the second seal is disposed in the first sealing groove, and the edge of the elastic sealing sleeve abuts against the second seal.

[0012] As an optional implementation, the connector assembly also includes a third seal and a sealing plate. A second sealing groove is provided on the circumferential edge of the end of the connecting hole facing the connecting pipe. The third seal is disposed in the second sealing groove. The sealing plate is disposed on the side of the elastic sealing sleeve facing the connecting pipe, and the sealing plate abuts against the third seal.

[0013] When the connecting pipe is inserted into the connecting hole, the inner edge of the third sealing element can abut against the outer wall of the connecting pipe.

[0014] As an optional implementation, the connector is provided with a first mounting hole, the elastic sealing sleeve is provided with a second mounting hole, the sealing plate is provided with a third mounting hole, and the connector assembly also includes a fastener, which passes through the third mounting hole and the second mounting hole in sequence and connects to the first mounting hole.

[0015] As an optional implementation, the frame may include a first longitudinal beam, a first transverse beam, a second longitudinal beam, and a second transverse beam connected end to end in sequence. The flow channel includes an inlet channel and an outlet channel. The first longitudinal beam has a hollow structure to form the inlet channel, and the second longitudinal beam has a hollow structure to form the outlet channel. There are multiple connector assemblies, including an inlet connector assembly and an outlet connector assembly. The inlet connector assembly is connected to the inlet channel, and the outlet connector assembly is connected to the outlet channel.

[0016] As an optional implementation, the cooling channel has an inlet and an outlet, and the connecting pipe includes an inlet connecting pipe and an outlet connecting pipe, with the inlet connecting pipe connected to the inlet and the outlet connecting pipe connected to the outlet.

[0017] The inlet connector assembly is located inside the first longitudinal beam and is plugged into the inlet connection pipe. The outlet connector assembly is located inside the second longitudinal beam and is plugged into the outlet connection pipe.

[0018] As an optional implementation, the cooling channel may include two cooling flow paths, two water outlet connection pipes, the water inlets of both cooling flow paths are connected to the water inlet connection pipes, and the water outlets of the two cooling flow paths are respectively connected to the two water outlet connection pipes.

[0019] As an optional implementation, there can be multiple cooling channels, which are arranged along the length of the frame.

[0020] As an optional implementation, the frame may also include multiple third longitudinal beams and multiple third transverse beams, with the multiple third transverse beams connected between the first longitudinal beam and the second longitudinal beam, and the multiple third transverse beams arranged at intervals along the length direction of the first longitudinal beam, and the multiple third longitudinal beams being connected sequentially between adjacent third transverse beams.

[0021] As an alternative implementation, the upper end face of the connector assembly is flush with the upper end face of the third crossbeam and the upper end face of the third longitudinal beam.

[0022] As an alternative implementation, the connector assembly may also include a water-proof baffle connected to the connector seat, and the water-proof baffle is disposed on the side of the connector seat facing the inside of the frame.

[0023] As an alternative implementation, at least a portion of the inlet connector assembly can be connected between the third crossbeam and the first longitudinal beam; and / or, at least a portion of the outlet connector assembly can be connected between the third crossbeam and the second longitudinal beam.

[0024] As an alternative implementation, the cooling plate is located on the side of the channel plate away from the frame, the contour of the side of the channel plate facing the frame matches the contour of the frame, and the surface of the side of the channel plate facing the frame is in contact with the surface of the frame.

[0025] As an alternative implementation, the battery pack housing may also include a protective plate connected to the side of the frame away from the cooling components. The inner edge of the frame may be provided with a mounting groove, and the protective plate is located in the mounting groove.

[0026] Secondly, this application provides a battery pack, which may include a battery and a battery pack housing as described above. The battery pack housing is used to carry the battery, and the battery is attached to the cooling plate of the battery pack housing.

[0027] This application provides a battery pack housing and a battery pack. The battery pack housing includes a support frame and a cooling assembly. The support frame includes a frame and a connector assembly. The connector assembly is connected to the frame, and the frame has a flow channel. The connector assembly communicates with the flow channel. The cooling assembly is connected to the support frame and includes a channel plate and a cooling plate. The channel plate and the cooling plate surround a cooling channel. The channel plate has a flow channel.

[0028] The connecting pipe connects to the cooling channel, and the connecting pipe is inserted into the connector assembly to connect the guide channel and the cooling channel 5. This improves the structural strength and sealing of the battery pack housing while reducing its weight.

[0029] To meet the strength and sealing requirements in harsh environments such as vibration conditions, the safety and reliability of the battery pack are improved.

[0030] In addition to the technical problems solved by the embodiments of this application described above, the technical solutions constituted by these embodiments are also technical.

[0031] In addition to the technical features and the beneficial effects brought about by the technical features of these technical solutions, this application provides a battery pack housing and other technical problems that the battery pack can solve, as well as other technical solutions included in the technical solutions.

[0032] The technical features and the beneficial effects of these technical features will be further described in detail in the specific implementation. Attached Figure Description

[0033] 5. To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will describe the embodiments.

[0034] The accompanying drawings used in the embodiments or prior art description are briefly introduced. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is an exploded view of the battery pack housing provided in an embodiment of this application;

[0036] Figure 2 A schematic diagram of the load-bearing frame in the battery pack housing provided in an embodiment of this application;

[0037] Figure 3 This is a top view of the load-bearing frame in the battery pack housing provided in an embodiment of this application;

[0038] Figure 4 A schematic diagram illustrating the connection between the connector assembly and the frame in the battery pack housing provided in this embodiment of the application;

[0039] Figure 5An exploded view of the connector assembly and frame in the battery pack housing provided in an embodiment of this application;

[0040] Figure 6 An exploded view of the connector assembly in the battery pack housing provided in this application embodiment;

[0041] Figure 7 A cross-sectional view of the connector assembly in the battery pack housing in the first state provided in the embodiments of this application;

[0042] Figure 8 A schematic diagram illustrating the state changes of the elastic sealing portion in the battery pack housing provided in an embodiment of this application;

[0043] Figure 9 A cross-sectional view of the connector assembly in the battery pack housing in a second state, provided in an embodiment of this application;

[0044] Figure 10 This is a top view of the channel plate in the battery pack housing provided in an embodiment of this application;

[0045] Figure 11 This is a partial schematic diagram of the channel plate in the battery pack housing provided in an embodiment of this application; Figure 12 This is a cross-sectional view of the battery pack housing provided in an embodiment of this application;

[0046] Figure 13 This is a schematic diagram of the installation of the protective plate in the battery pack housing provided in an embodiment of this application;

[0047] Figure 14 A flowchart illustrating the battery pack housing assembly method provided in this application embodiment.

[0048] Explanation of reference numerals in the attached figures:

[0049] 100-Bearing frame; 101-Flow guide channel; 101a-Inlet channel; 101b-Outlet channel; 102-Mounting groove; 110-Frame; 111-First longitudinal beam; 112-Second longitudinal beam; 113-First crossbeam; 114-Second crossbeam; 115-Third longitudinal beam; 116-Third crossbeam; 120-Connector assembly; 120a-Inlet connector assembly; 120b-Outlet connector assembly; 121 - Connecting seat; 1211 Mounting hole; 1212 First sealing groove; 1213 First assembly hole; 122 Elastic sealing sleeve; 1221 Connecting hole; 1222 Sealing part; 1223 Second sealing groove; 1224 Second assembly hole; 123 First sealing element; 124 Second sealing element; 125 Third sealing element; 126 Sealing plate; 1261 Third assembly hole; 127 Waterproof baffle;

[0050] 200 - Cooling component; 201 - Cooling channel; 210 - Channel plate; 220 - Cooling plate; 230 - Connecting pipe; 230a - Inlet connecting pipe; 230b - Outlet connecting pipe;

[0051] 300 - Protective plate. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0053] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0054] Secondly, it should be noted that in the description of this application, the terms "inner" and "outer," etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0055] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] With the development of the automotive industry, new energy vehicles are gradually becoming more widespread. Among them, electric new energy vehicles store electrical energy through battery packs to power the electric motor that drives the vehicle. However, to ensure sufficient driving range, the battery pack is relatively heavy, and it needs to maintain its ambient temperature during operation. Currently, a battery pack typically consists of batteries and a casing that houses the batteries. The battery casing needs to maintain the ambient temperature of the battery pack during operation, playing a role in cooling and insulating the batteries. To reduce the overall vehicle weight, the battery pack needs to be designed to be lightweight. Compared to traditional steel battery packs, the battery pack casing needs to use non-metallic lightweight materials to reduce the weight of the battery pack.

[0058] However, the current lightweight battery packs have low structural strength and poor sealing due to their assembly structure. When applied to automobiles, the battery packs are prone to deformation and failure under harsh conditions such as vibration and impact, posing safety hazards.

[0059] This application provides a battery pack housing and a battery pack. Through the structural design of the battery pack housing and the adoption of a specific sealing connection structure, the structural strength and sealing performance of the battery pack housing are improved while achieving lightweighting. When the battery pack is applied to automobiles, it meets the requirements of the battery pack to cope with harsh working conditions such as vibration and shock during service, and eliminates safety hazards.

[0060] Figure 1 This is an exploded view of the battery pack housing provided in an embodiment of this application. Figure 2 This is a schematic diagram of the load-bearing frame in the battery pack housing provided in an embodiment of this application. Figure 3 This is a top view of the load-bearing frame in the battery pack housing provided in an embodiment of this application. Figure 4 This is a schematic diagram showing the connection between the connector assembly and the frame in the battery pack housing provided in an embodiment of this application. Figure 5 This is an exploded view of the connector assembly and frame in the battery pack housing provided in an embodiment of this application. Figure 6 This is an exploded view of the connector assembly in the battery pack housing provided in an embodiment of this application. Figure 7 This is a cross-sectional view of the connector assembly in the battery pack housing in the first state provided in the embodiments of this application. Figure 8 This is a schematic diagram illustrating the state changes of the elastic sealing portion in the battery pack housing provided in an embodiment of this application. Figure 9 This is a cross-sectional view of the connector assembly in the battery pack housing in a second state, as provided in an embodiment of this application. Figure 10 This is a top view of the channel plate in the battery pack housing provided in an embodiment of this application. Figure 11 This is a partial schematic diagram of the channel plate in the battery pack housing provided in an embodiment of this application. Figure 12 This is a cross-sectional view of the battery pack housing provided in an embodiment of this application.

[0061] like Figures 1 to 12 As shown in the figure, this application embodiment provides a battery pack housing for use in a battery pack to support and protect the battery (not shown), while maintaining the environment inside the battery pack within a suitable range for battery operation. The battery pack housing includes a support frame 100 and a cooling component 200. The support frame 100 serves a load-bearing function and has good structural strength, enabling the battery pack housing to resist vibration and impact. The cooling component 200 is connected to the support frame 100 and is used to cool the battery that generates heat during battery pack operation, preventing the battery temperature from becoming too high and maintaining the battery's operating temperature within a suitable range.

[0062] In some embodiments, the support frame 100 includes a frame 110 and a connector assembly 120. The connector assembly 120 is connected to the frame 110. The frame 110 has a flow channel 101. The connector assembly 120 communicates with the flow channel 101. The cooling assembly 200 is mounted on the frame 110 and can cooperate with the connector assembly 120. The flow channel 101 can supply coolant to the cooling assembly 200 through the connector assembly 120 and can also recover coolant from the cooling assembly 200 through the connector assembly 120.

[0063] The cooling assembly 200 may include a channel plate 210 and a cooling plate 220. The channel plate 210 and the cooling plate 220 form a cooling channel 201. The channel plate 210 has a connecting pipe 230 that communicates with the cooling channel 201. When the cooling assembly 200 is assembled onto the support frame 100, the connecting pipe 230 faces the support frame 100 and is inserted into the connector assembly 120. The connecting pipe 230 and the connector assembly 120 are connected, thereby enabling the flow channel 101 to communicate with the cooling channel 201. As a result, the coolant can flow between the flow channel 101 and the cooling channel 201, realizing the circulation of the coolant.

[0064] Understandably, the connecting pipe 230 is connected to the cooling plate 220 by plugging in, which improves the convenience and sealing of the connection between the frame 110 and the cooling component 200. The frame 110 is a rigid structure and supports the cooling component 200. The cooling component 200 is in contact with the battery and uses the circulation of coolant to remove heat and regulate the battery's operating temperature. The frame 110 can support the battery, giving the battery pack housing good structural strength.

[0065] It should be noted that the battery pack housing provided in this application embodiment improves the structural strength of the battery pack housing while reducing its weight through the structural design of the supporting frame 100 and the cooling component 200. At the same time, the design of the cooperation method between the supporting frame 100 and the cooling component 200 improves the sealing performance of the battery pack housing, so as to meet the strength and sealing requirements in harsh environments such as vibration conditions, thereby improving the safety and reliability of the battery pack.

[0066] Furthermore, the coolant flowing between the guide channel 101 and the cooling channel 201 can be water or other aqueous solutions of water with additives such as antifreeze. This application embodiment does not specifically limit this; water will be used as an example for the following description, and no further specific examples will be given.

[0067] The following section will first provide a detailed description of the specific structure of the connector assembly 120 and the mating method between the connector assembly 120 and the connecting pipe 230.

[0068] Please continue to refer to Figures 1 to 12 In one possible implementation, the connector assembly 120 may include a connecting seat 121, an elastic sealing sleeve 122, and a first sealing element 123. The connecting seat 121 has a mounting hole 1211 that communicates with the flow channel 101. The elastic sealing sleeve 122 is disposed in the mounting hole 1211. The first sealing element 123 is sleeved on the outside of the elastic sealing sleeve 122 and abuts against the outer wall of the elastic sealing sleeve 122 and the inner wall of the mounting hole 1211, respectively.

[0069] It is understood that the elastic sealing sleeve 122 can be a rotating structure. When assembling the bearing frame 100 and the cooling assembly 200, the connecting pipe 230 can be inserted into the elastic sealing sleeve 122. The elastic seal can wrap around the outside of the connecting pipe 230. Relying on the elasticity of the elastic sealing sleeve 122 itself, a good seal is ensured between the elastic sealing sleeve 122 and the connecting pipe 230. The connecting pipe 230 can press the elastic sealing sleeve 122 to press the first sealing element 123, thereby ensuring a good seal between the elastic sealing sleeve 122 and the connecting seat 121.

[0070] For example, the first sealing element 123 can be an "O" ring, and the material of the first sealing element 123 can be elastic materials such as rubber and silicone. This application embodiment does not specifically limit this.

[0071] In some embodiments, the elastic sealing sleeve 122 has a connection hole 1221, and the connecting tube 230 can be inserted into the connection hole 1221. The end of the connection hole 1221 facing the inside of the mounting hole 1211 has a sealing part 1222. When the connecting tube 230 is inserted into the connection hole 1221, the sealing part 1222 fits against the outer wall of the connecting tube 230.

[0072] It is understandable that the sealing part 1222 can be elastic. When the connecting pipe 230 is inserted into the connecting hole 1221, the sealing part 1222 can undergo elastic deformation or plastic deformation to ensure that the sealing part 1222 can always be in close contact with the outer wall of the connecting pipe 230. Under harsh working conditions such as vibration and impact, the sealing part 1222 can maintain this fit with the connecting pipe 230, thereby preventing coolant from leaking between the connecting pipe 230 and the elastic sealing sleeve 122.

[0073] For example, the sealing part 1222 can be a rotating body, and the cross-sectional dimensions of the sealing part 1222 can gradually decrease along the insertion direction of the connecting tube 230. For example, the sealing part 1222 makes the end of the connecting hole 1221 facing the inside of the mounting hole 1211 funnel-shaped. When the connecting tube 230 is inserted into the connecting hole 1221, the sealing part 1222 folds outward along the X direction towards the outside of the connecting hole 1221 and wraps around the circumferential outer wall of the connecting tube 230.

[0074] It should be noted that the diameter of the end of the connecting hole 1221 facing the connecting tube 230, and the size of the middle section of the connecting hole 1221, can match the outer diameter of the connecting tube 230. However, the diameter of the sealing part 1222 can be smaller than the outer diameter of the connecting tube 230. Therefore, when the connecting tube 230 is inserted into the connecting hole 1221, it can compress the sealing part 1222, causing elastic or plastic deformation, which opens the sealing part 1222 outwards, allowing the connecting tube 230 to communicate with the interior of the connecting seat 121. Furthermore, the friction between the sealing part 1222 and the outer wall of the connecting tube 230 after deformation can improve the reliability and stability of the connection between the connecting tube 230 and the elastic sealing sleeve 122, preventing the connecting tube 230 from detaching from the elastic sealing sleeve 122.

[0075] In one possible implementation, the connector assembly 120 may further include a second seal 124, and the connector 121 may be provided with a first sealing groove 1212, the first sealing groove 1212 being arranged around the mounting hole 1211, the second seal 124 being disposed in the first sealing groove 1212, and the edge of the elastic sealing sleeve 122 abutting against the second seal 124.

[0076] It is understood that the first sealing groove 1212 can be located on the side of the connecting seat 121 facing the cooling assembly 200, and the edge of the elastic sealing sleeve 122 facing the cooling assembly 200 can have a flange that folds outward toward the connecting hole 1221. When the elastic sealing sleeve 122 is installed in the mounting hole 1211, the elastic sealing sleeve 122 can block above the first sealing groove 1212 and press the second sealing member 124 to ensure a good sealing effect.

[0077] For example, the first sealing groove 1212 is a closed annulus surrounding the mounting hole 1211, and the second sealing element is a rotating body. In this embodiment, the cross-sectional shape of the second sealing element 124 is not specifically limited.

[0078] In some embodiments, the connector assembly 120 may further include a third seal 125 and a sealing plate 126. A second sealing groove 1223 is provided on the circumferential edge of the connection hole 1221 facing the end of the connecting pipe 230. The third seal 125 is disposed in the second sealing groove 1223. The sealing plate 126 is disposed on the side of the elastic sealing sleeve 122 facing the connecting pipe 230, and the sealing plate 126 abuts against the third seal 125.

[0079] Understandably, when the connecting pipe 230 is inserted into the connecting hole 1221, the inner edge of the third sealing element 125 can abut against the outer wall of the connecting pipe 230, thereby achieving a sealing effect between the elastic sealing sleeve 122 and the connecting pipe 230. The second sealing groove 1223 can be an annular groove, and correspondingly, the third sealing element 125 can be an annular sealing ring.

[0080] It should be noted that when the connecting pipe 230 is inserted into the connecting hole 1221, the outer wall of the elastic sealing sleeve 122 applies pressure to the inner wall of the first sealing member 123 towards the mounting hole 1211. When the first sealing member 123 is compressed, the reaction force of the inner wall of the mounting hole 1211 can press the elastic sealing sleeve 122 and the connecting pipe 230 together. In addition, the second sealing member 124 provides an external seal relative to the elastic sealing sleeve 122, while the third sealing member 125 provides an internal seal relative to the elastic sealing sleeve 122, so that the insertion and mating of the connecting pipe 230 and the connector assembly 120 has a good sealing effect.

[0081] In some embodiments, the connector 121 is provided with a first mounting hole 1213, the elastic sealing sleeve 122 is provided with a second mounting hole 1224, the sealing plate 126 is provided with a third mounting hole 1261, and the connector assembly 120 further includes a fastener, which passes through the third mounting hole 1261 and the second mounting hole 1224 in sequence and is connected to the first mounting hole 1213.

[0082] It is understandable that the first mounting hole 1213 can be a threaded hole, and the second mounting hole 1224 and the third mounting hole 1261 can be through holes. The fasteners can be screws and bolts, etc. By locking the sealing plate 126 with the fasteners, the sealing plate 126 can press the upper end face of the elastic sealing sleeve 122. On the one hand, it plays a role in fixing the installation of the elastic sealing sleeve 122. On the other hand, it can make the elastic sealing sleeve 122 press the second sealing element 124, while the sealing plate 126 can press the third sealing element 125, which plays a pre-tightening role on the second sealing element 124 and the third sealing element 125 to ensure a good sealing effect.

[0083] It should be noted that the second seal 124 and the third seal 125 can be made of elastic materials, including but not limited to rubber, silicone, etc. Under harsh working conditions such as vibration and impact, the elastic deformation generated by the elastic sealing sleeve 122 will not cause shear damage to the first seal 123, the second seal 124 and the third seal 125, thereby improving the reliability of the seal.

[0084] The structure of the frame 110 and the assembly method of the connector assembly 120 are described in detail below.

[0085] Please continue to refer to Figures 1 to 12 In one possible implementation, the frame 110 may include a first longitudinal beam 111, a first transverse beam 113, a second longitudinal beam 112, and a second transverse beam 114 connected end to end in sequence. The flow channel 101 includes an inlet channel 101a and an outlet channel 101b. The first longitudinal beam 111 has a hollow structure to form the inlet channel 101a, and the second longitudinal beam 112 has a hollow structure to form the outlet channel 101b. There are multiple connector assemblies 120, including an inlet connector assembly 120a and an outlet connector assembly 120b. The inlet connector assembly 120a is connected to the inlet channel 101a, and the outlet connector assembly 120b is connected to the outlet channel 101b.

[0086] It is understood that the first longitudinal beam 111 and the second longitudinal beam 112 are parallel to each other, and the first cross beam 113 and the second cross beam 114 are parallel to each other, so that the frame 110 has a square frame structure. The water inlet channel 101a and the water outlet channel 101b are parallel to each other. The inlet of the water inlet channel 101a and the outlet of the water outlet channel 101b can be located on the same side of the frame 110, which facilitates the connection between the frame 110 and the external water channel.

[0087] In some embodiments, the cooling channel 201 has an inlet and an outlet, and the connecting pipe 230 includes an inlet connecting pipe 230a and an outlet connecting pipe 230b. The inlet connecting pipe 230a is connected to the inlet, and the outlet connecting pipe 230b is connected to the outlet. When the cooling assembly 200 is assembled onto the support frame 100, the inlet connecting pipe 230a is opposite to and inserted into the inlet connector assembly 120a, while the outlet connecting pipe 230b is opposite to and inserted into the outlet connector assembly 120b.

[0088] The water inlet connector assembly 120a can be located inside the first longitudinal beam 111, and the water outlet connector assembly 120b can be located inside the second longitudinal beam 112, thereby making full use of the space inside the frame 110 and improving space utilization.

[0089] It should be noted that the inlet connector assembly 120a and the outlet connector assembly 120b have similar structures and both have the sealing effect of the above-mentioned connector assembly 120, which will not be repeated here. The connecting pipe 230 is connected to the connector assembly 120 by plugging, with the connecting pipe 230 being the male and the connector assembly 120 being the female, forming a quick-plug sealing structure, which improves the convenience of assembly.

[0090] In some embodiments, the cooling channel 201 may include two cooling flow paths, two water outlet connection pipes 230b, the water inlets of the two cooling flow paths are connected to the water inlet connection pipe 230a, and the water outlets of the two cooling flow paths are respectively connected to the two water outlet connection pipes 230b.

[0091] Understandably, the water flowing out of the inlet channel 101a can enter the cooling channel 201 through the inlet connector assembly 120a and the inlet connecting pipe 230a, and then be split in the cooling channel 201. Finally, the water flows out from the two outlet connecting pipes 230b and into the outlet channel 101b through the two outlet connector assemblies 120b. This arrangement can improve the flow efficiency of the water and increase the speed of temperature regulation when adjusting the battery temperature, for example, improving the cooling efficiency when cooling down.

[0092] For example, there can be multiple cooling channels 201, which are arranged along the length of the frame 110. Each cooling channel 201 is connected to the connector assembly 120 on the support frame 100 through an inlet water connection pipe 230a and an outlet water connection pipe 230b. Of course, there can also be three or more cooling channels 201, but this application embodiment does not specifically limit this.

[0093] In one possible implementation, the frame may further include multiple third longitudinal beams 115 and multiple third transverse beams 116. The multiple third transverse beams 116 are all connected between the first longitudinal beam 111 and the second longitudinal beam 112, and the multiple third transverse beams 116 are arranged at intervals along the length direction of the first longitudinal beam 111. The multiple third longitudinal beams 115 may be connected sequentially between adjacent third transverse beams 116.

[0094] It is understandable that the third longitudinal beam 115 and the third transverse beam 116 are perpendicular to each other, thus forming multiple cross structures in the middle of the frame 110, which improves the structural strength and reliability of the frame 110. Furthermore, the third longitudinal beam 115 can be welded to the corresponding third transverse beam 116, the first transverse beam 113, or the second transverse beam 114, while the third transverse beam 116 can be welded to the first longitudinal beam 111 and the second longitudinal beam 112.

[0095] In some embodiments, the upper end face of the connector assembly 120 can be flush with the upper end face of the third crossbeam 116 and the upper end face of the third longitudinal beam 115, so that the assembly or welding positions of the various parts of the frame 110 and the connector assembly 120 can be referenced to each other during connection, ensuring assembly accuracy and reducing errors. At the same time, when assembling the cooling assembly 200, it can cooperate with the lower surface of the channel plate 210 of the cooling assembly 200 to avoid interference.

[0096] It should be noted that the connector assembly 120 may also include a water-proof baffle 127, which is connected to the connecting seat 121 and is located on the side of the connecting seat 121 facing the inside of the frame 110. The connecting seat 121 of the connector assembly 120 may be a profile structure. The water-proof baffle 127 can seal the side of the connector assembly 120 to ensure that the connecting seat 121 of the connector assembly 120 has good sealing performance. For example, the water-proof baffle 127 may be connected to the connecting seat 121 by welding.

[0097] In some embodiments, at least a portion of the water inlet assembly 120a may be connected between the third crossbeam 116 and the first longitudinal beam 111, such that one side of the water inlet assembly 120a is welded to the first longitudinal beam 111 and the other side is welded to the third crossbeam 116, i.e., the sealing plate 126 is welded to the third crossbeam 116.

[0098] In some embodiments, at least a portion of the water outlet assembly 120b can be connected between the third crossbeam 116 and the second longitudinal beam 112, such that one side of the water outlet assembly 120b is welded to the second longitudinal beam 112 and the other side is welded to the third crossbeam 116, i.e., the sealing plate 126 is welded to the third crossbeam 116.

[0099] It should be noted that there are no restrictions on the specific assembly positions of the water outlet connector assembly 120b and the water inlet connector assembly 120a.

[0100] In one possible implementation, the cooling plate 220 is located on the side of the channel plate 210 away from the frame 110, the contour of the side of the channel plate 210 facing the frame 110 matches the contour of the frame 110, and the surface of the side of the channel plate 210 facing the frame 110 is in contact with the surface of the frame 110.

[0101] Understandably, the frame 110 can provide positioning and limiting for the assembly of the cooling component 200. At the same time, when the frame 110 supports the cooling component 200 and the battery, the frame 110 and the channel plate 210 have sufficient contact area to avoid excessive local stress and deformation, thereby improving the reliability of the overall structure.

[0102] Figure 13 This is a schematic diagram of the installation of the protective plate in the battery pack housing provided in an embodiment of this application.

[0103] Please refer to Figures 1 to 13 In some embodiments, the battery pack housing may also include a protective plate 300, which is connected to the side of the frame 110 away from the cooling assembly 200. The inner edge of the frame 110 may be provided with a mounting groove 102, and the protective plate 300 is located in the mounting groove 102. The protective plate 300 can protect the bottom of the battery pack housing.

[0104] Understandably, when the battery pack is used in a car, it can be installed under the car, and the protective plate 300 is located on the bottom side of the battery pack housing, which can protect against impacts from objects such as stones during the car's operation.

[0105] For example, the protective plate 300 can be welded to the frame 110, and the protective plate 300 can be welded to the edge of the mounting groove 102, with the weld seams spaced apart along the edge of the protective plate 300.

[0106] It should be noted that in the battery pack housing provided in this application embodiment, the frame 110 can be made of a profile structure, and its material can be metal such as aluminum or aluminum alloy. The channel plate 210 can be made of plastic, the connecting pipe 230 can be made of aluminum or aluminum alloy, and the connecting pipe 230 can be integrally molded with the channel plate 210. The cooling plate 220 can be a thin plate structure made of aluminum or aluminum alloy, and the protective plate 300 can be made of aluminum or aluminum alloy. While ensuring lightweight, the battery pack housing has good structural strength and sealing performance.

[0107] Please continue to refer to Figures 1 to 13This application embodiment also provides a battery pack, which may include a battery (not shown) and a battery pack housing as described above. The battery pack housing is used to carry the battery, and the battery is attached to the cooling plate 220 of the battery pack housing.

[0108] Understandably, the battery pack housing can be located below the battery pack, and the battery pack housing has a protective function for the battery. The cooling plate 220 can absorb the heat during battery operation and transfer the heat to the coolant, which then removes the heat, ensuring that the battery's operating temperature is controlled within a reasonable range.

[0109] Figure 14 A flowchart illustrating the battery pack housing assembly method provided in this application embodiment.

[0110] Please refer to Figure 14 , combined Figures 1 to 13 This application also provides a battery pack housing assembly method for assembling the battery pack housing in the above-mentioned technical solution. The method includes:

[0111] S100, which is equipped with a load-bearing frame 100 and a cooling assembly 200 for the battery pack housing.

[0112] The load-bearing frame 100 and the cooling assembly 200 can be produced and assembled simultaneously. The load-bearing frame 100 requires the assembly and connection of the frame 110 and the connector assembly 120, while the cooling assembly 200 requires the integral molding of the channel plate 210 and the connecting pipe 230, as well as the assembly and connection of the channel plate 210 and the cooling plate 220.

[0113] S200, Detect the relative position information of the joint assembly 120 of the load-bearing frame 100 and the connecting pipe 230 of the cooling component 200.

[0114] It is understandable that the position of the connector assembly 120 on the support frame 100 and the position of the connecting pipe 230 on the cooling assembly 200 can be detected by offline visual inspection or a coordinate measuring machine. Since there are multiple connector assemblies 120 and connecting pipes 230, and they correspond one-to-one, the positions of the corresponding connector assemblies 120 and connecting pipes 230 can be matched by the above detection method. The relative position information refers to the positional deviation value between the corresponding connector assemblies 120 and connecting pipes 230.

[0115] S300, Adjust the drilling position of connector assembly 120 according to the relative position information.

[0116] Based on the detected positional deviation values ​​between the corresponding connector assembly 120 and connecting pipe 230, and combined with the required fit tolerances of each connector assembly 120 and connecting pipe 230, the connector assembly 120 is rapidly processed. In this process, the elastic sealing sleeve 122 and the sealing plate 126 need to be processed to form the connecting hole 1221, thereby enabling fine-tuning of the specific position of the connecting hole 1221.

[0117] S400, assemble the cooling component 200 onto the support frame 100, and insert the connecting pipe 230 into the connector assembly 120.

[0118] With the connecting pipe 230 facing the supporting frame 100, the cooling assembly 200 is assembled, and each connecting pipe 230 is inserted into the corresponding connector assembly 120 so that the connecting pipe 230 is inserted into the corresponding connecting hole 1221, thereby meeting the requirements of the coordination tolerance of multiple inlets and multiple outlets.

[0119] This application embodiment also provides a car, which includes the battery pack in the above technical solution. The battery pack can be installed on the chassis of the car. The car also includes a motor. The battery pack supplies power to the motor, and the motor is used to drive the car.

[0120] It should be noted that the vehicles provided in this application embodiment are new energy vehicles, including but not limited to electric vehicles, hybrid electric vehicles, etc. In addition, the battery pack can be lithium iron phosphate batteries, ternary batteries, etc. This application embodiment does not limit the specific type of vehicle or the specific type of battery.

[0121] This application provides a battery pack housing, a battery pack, a battery pack housing assembly method, and an automobile. The battery pack housing includes a load-bearing frame and a cooling assembly. The load-bearing frame includes a frame and a connector assembly. The connector assembly is connected to the frame, and the frame has a flow channel. The connector assembly communicates with the flow channel. The cooling assembly is connected to the load-bearing frame and includes a channel plate and a cooling plate. The channel plate and the cooling plate surround a cooling channel. The channel plate has a connecting pipe that communicates with the cooling channel. The connecting pipe is inserted into the connector assembly to connect the flow channel and the cooling channel. This design improves the structural strength and sealing of the battery pack housing while reducing its weight, thus meeting the strength and sealing requirements under harsh environments such as vibration conditions and enhancing the safety and reliability of the battery pack.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery pack housing, characterized in that, include: A support frame, comprising a frame and a connector assembly, the connector assembly being connected to the frame, the frame having a flow guiding channel, and the connector assembly communicating with the flow guiding channel. A cooling assembly is connected to the supporting frame. The cooling assembly includes a channel plate and a cooling plate. The channel plate and the cooling plate surround a cooling channel. The channel plate has a connecting pipe communicating with the cooling channel. The connecting pipe is inserted into the connector assembly to make the flow channel communicate with the cooling channel. The connector assembly includes a connecting seat, an elastic sealing sleeve, and a first sealing element. The connecting seat has a mounting hole that communicates with the flow channel. The elastic sealing sleeve is disposed in the mounting hole. The first sealing element is sleeved on the outside of the elastic sealing sleeve and abuts against the outer wall of the elastic sealing sleeve and the inner wall of the mounting hole, respectively. The elastic sealing sleeve has a connecting hole, and the connecting tube is inserted into the connecting hole; the end of the connecting hole facing the inside of the mounting hole has a sealing part, and the sealing part fits against the outer wall of the connecting tube; The sealing part is a rotating body and has elasticity. The cross-sectional size of the sealing part gradually decreases along the insertion direction of the connecting pipe. When the connecting pipe is inserted into the connecting hole, the sealing part folds outward of the connecting hole and wraps around and adheres tightly to the circumferential outer wall of the connecting pipe.

2. The battery pack housing according to claim 1, characterized in that, The connector assembly further includes a second seal, and the connector seat is provided with a first sealing groove, which surrounds the mounting hole. The second seal is disposed in the first sealing groove, and the edge of the elastic sealing sleeve abuts against the second seal.

3. The battery pack housing according to claim 1, characterized in that, The connector assembly further includes a third sealing element and a sealing plate. A second sealing groove is provided on the circumferential edge of the end of the connecting hole facing the connecting pipe. The third sealing element is disposed in the second sealing groove. The sealing plate is disposed on the side of the elastic sealing sleeve facing the connecting pipe, and the sealing plate abuts against the third sealing element. When the connecting pipe is inserted into the connecting hole, the inner edge of the third sealing member abuts against the outer wall of the connecting pipe.

4. The battery pack housing according to claim 3, characterized in that, The connector is provided with a first assembly hole, the elastic sealing sleeve is provided with a second assembly hole, the sealing plate is provided with a third assembly hole, and the connector assembly also includes a fastener, which passes through the third assembly hole and the second assembly hole in sequence and is connected to the first assembly hole.

5. The battery pack housing according to any one of claims 1-4, characterized in that, The frame includes a first longitudinal beam, a first transverse beam, a second longitudinal beam, and a second transverse beam connected end to end in sequence. The flow channel includes an inlet channel and an outlet channel. The first longitudinal beam has a hollow structure to form the inlet channel, and the second longitudinal beam has a hollow structure to form the outlet channel. There are multiple connector assemblies, including an inlet connector assembly and an outlet connector assembly. The inlet connector assembly is connected to the inlet channel, and the outlet connector assembly is connected to the outlet channel.

6. The battery pack housing according to claim 5, characterized in that, The frame also includes a plurality of third longitudinal beams and a plurality of third transverse beams. The plurality of third transverse beams are connected between the first longitudinal beam and the second longitudinal beam, and the plurality of third transverse beams are arranged at intervals along the length direction of the first longitudinal beam. The plurality of third longitudinal beams are sequentially connected between adjacent third transverse beams. The upper end face of the joint assembly is flush with the upper end face of the third crossbeam and the upper end face of the third longitudinal beam.

7. The battery pack housing according to claim 6, characterized in that, The connector assembly also includes a water-proof baffle, which is connected to the connecting seat and is located on the side of the connecting seat facing the inside of the frame.

8. The battery pack housing according to any one of claims 1-4, characterized in that, The cooling plate is located on the side of the channel plate away from the frame. The outline of the side of the channel plate facing the frame matches the outline of the frame, and the surface of the side of the channel plate facing the frame is in contact with the surface of the frame.

9. The battery pack housing according to any one of claims 1-4, characterized in that, It also includes a protective plate, which is connected to the side of the frame away from the cooling component. The inner edge of the frame is provided with a mounting groove, and the protective plate is located in the mounting groove.

10. A battery pack, characterized in that, The battery includes a battery and a battery pack housing as described in any one of claims 1-9, the battery pack housing being used to carry the battery, and the battery being attached to a cooling plate of the battery pack housing.

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