Box assembly, battery pack, and vehicle

Abstract

This utility model discloses a housing assembly, a battery pack, and a vehicle, relating to the field of battery pack technology. The housing assembly includes a housing and a cooling assembly. The housing includes two opposing side beams and a mounting cavity for power cell installation. The cooling assembly includes at least two pipes, each containing at least one inlet pipe and at least one outlet pipe. An inlet pipe is installed within a cavity of one side beam, and an outlet pipe is installed within a cavity of the other side beam. Each pipe runs parallel to the side beam and has multiple liquid-passing holes spaced apart along its length, communicating with the mounting cavity. The technical solution provided by this utility model aims to reduce the space occupied by the cooling assembly within the battery pack, ensuring efficient space utilization within the battery pack.

Description

Technical Field

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

[0002] In the process of cooling battery packs, liquid cooling plates or cooling pipes are usually installed inside the battery pack. However, this cooling method inevitably occupies space inside the battery pack, reducing the space utilization and energy density of the battery pack. Utility Model Content

[0003] The main purpose of this utility model is to propose a housing assembly, a battery pack, and a vehicle, which aims to reduce the space occupied by the cooling components within the battery pack and ensure the space utilization rate within the battery pack.

[0004] To achieve the above objectives, the housing assembly proposed in this utility model includes:

[0005] The enclosure includes two opposing side beams and a mounting cavity for mounting the power supply core; and

[0006] A cooling assembly comprising at least two pipes, each pipe including at least one inlet pipe and at least one outlet pipe. The inlet pipe is installed in the cavity of one side beam, and the outlet pipe is installed in the cavity of the other side beam. Each pipe runs parallel to the side beam, and each pipe has a plurality of liquid passage holes spaced apart along its length, the liquid passage holes communicating with the mounting cavity.

[0007] In one embodiment, the pipe body is provided with a connector, which is connected to the side beam.

[0008] In one embodiment, the connector is hollow, and the flow channel of the tube body is connected to the mounting cavity through the hollow shaft of the connector.

[0009] In one embodiment, the connector includes a hollow stud and a nut. One end of the hollow stud is fixedly connected to the tube body, the liquid passage is formed in the hollow shaft of the hollow stud, and the nut is connected to the other end of the hollow stud outside the cavity of the side beam.

[0010] In one embodiment, the connector is configured as a hollow bolt, the liquid passage hole is configured as a threaded hole, and the hollow bolt is connected to the liquid passage hole from outside the cavity of the side beam.

[0011] In one embodiment, the housing assembly further includes a sealing gasket, the side beam includes a mounting wall disposed adjacent to the mounting cavity, the mounting wall has a clearance hole, the connector is disposed through the clearance hole, the sealing gasket is sandwiched between the tube and the mounting wall, and has a portion disposed at least around the periphery of the clearance hole.

[0012] In one embodiment, the spacing between the plurality of liquid passage holes in the tube extension direction is used to adapt to the distribution density of the battery cells.

[0013] In one embodiment, one end of the water inlet pipe is provided with a water inlet, and one end of the water outlet pipe is provided with a water outlet. Along the extension direction of the water inlet pipe and in a direction away from the water inlet, the diameter of the plurality of liquid passage holes on the water inlet pipe gradually increases, and / or, along the extension direction of the water outlet pipe and in a direction away from the water outlet, the diameter of the plurality of liquid passage holes on the water outlet pipe gradually increases.

[0014] In one embodiment, one end of the water inlet pipe is provided with a water inlet, and one end of the water outlet pipe is provided with a water outlet, with the water inlet and the water outlet being arranged in the same direction.

[0015] In one embodiment, the cavity includes a plurality of parallel extending compartments, the tube body is disposed in one of the compartments, and the lower side of the tube body abuts against the lower sidewall of the corresponding compartment.

[0016] This utility model also proposes a battery pack, which includes the housing assembly as described above.

[0017] This utility model also proposes a vehicle that includes the battery pack as described above.

[0018] The technical solution of this utility model involves installing cooling component pipes within the opposing side beams of the battery pack. One side beam's pipe extends into the cavity and serves as the inlet pipe, while the other side beam's pipe extends into the cavity and serves as the outlet pipe. Simultaneously, multiple liquid-passing holes are spaced along the length of each pipe wall, penetrating the pipe and connecting to the mounting cavity of the battery pack. This allows coolant to be evenly sprayed from the inlet pipe through the liquid-passing holes, flowing over the surface of the battery cells for heat exchange, and then flowing back through the liquid-passing holes on the outlet pipe before finally being discharged. This achieves efficient immersion convection cooling. In this way, the pipes are integrated within the cavity of the side beam, utilizing the effective space within the side beam. This avoids the need for cooling plates or pipe channels inside or outside the battery pack, reducing the space occupied by the cooling components within the battery pack and thus improving the space utilization and energy density of the battery pack. Furthermore, the tube extends parallel to the side beam and is built into the cavity. The tube can act as a rigid component to support the inside of the side beam, enhancing the bending and torsional stiffness of the side beam, thus reinforcing the side beam and improving the mechanical strength and impact resistance of the box. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0020] Figure 1 An exploded view of an embodiment of the housing assembly provided by this utility model in which a battery cell is installed;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 for Figure 1 A sectional view of the location of the middle edge beam;

[0023] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0024] Figure 5 for Figure 1 A schematic diagram of the central tube structure.

[0025] Explanation of icon numbers:

[0026] 100. Housing; 110. Mounting cavity; 120. Side beam; 121. Cavity; 122. Compartment; 123. Clearance hole; 124. Mounting wall; 200. Pipe body; 201. Inlet pipe; 202. Inlet; 203. Outlet pipe; 204. Outlet; 210. Liquid passage hole; 300. Connector; 400. Sealing gasket; 500. Battery cell.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This utility model proposes a box assembly.

[0032] Please refer to Figure 1 , Figure 3 and Figure 5 In one embodiment of this utility model, the housing assembly includes:

[0033] The enclosure 100 includes two opposing side beams 120 and a mounting cavity 110 for mounting the power supply core 500; and

[0034] The cooling assembly includes at least two pipe bodies 200, each including at least one inlet pipe 201 and at least one outlet pipe 203. The inlet pipe 201 is installed in the cavity 121 of one side beam 120, and the outlet pipe 203 is installed in the cavity 121 of the other side beam 120. Each pipe body 200 is parallel to the side beam 120, and each pipe body 200 is provided with a plurality of liquid passage holes 210 spaced apart along its length direction. The liquid passage holes 210 are connected to the mounting cavity 110.

[0035] The technical solution of this utility model is to set cooling component pipes 200 in the two side beams 120 of the housing 100, so that the pipe 200 extending in the cavity 121 of one side beam 120 is configured as a water inlet pipe 201, and the pipe 200 extending in the cavity 121 of the other side beam 120 is configured as a water outlet pipe 203. At the same time, multiple liquid passage holes 210 are respectively opened on the pipe wall of the water inlet pipe 201 and the water outlet pipe 203, which are spaced apart along their length direction. The liquid passage holes 210 penetrate the pipe 200 and connect to the mounting cavity 110 of the housing 100, so that the coolant can be evenly sprayed out from the water inlet pipe 201 through the liquid passage holes 210, flow through the surface of the battery cell 500 for heat exchange, and then flow back through the liquid passage holes 210 on the water outlet pipe 203, and finally discharged from the water outlet pipe 203, thus achieving efficient immersion convection cooling. Thus, the tube 200 is integrated into the cavity 121 of the side beam 120, utilizing the effective space within the side beam 120. This avoids the need for cooling plates or pipe channels inside or outside the housing 100, reducing the space occupied by cooling components within the battery pack and thereby improving the space utilization and energy density of the battery pack. Furthermore, the tube 200 extends parallel to the side beam 120 and is built into the cavity 121. The tube 200 can act as a rigid component to support the interior of the side beam 120, enhancing its bending and torsional stiffness and reinforcing it. This improves the mechanical strength and impact resistance of the housing 100.

[0036] It is understood that the cooling assembly includes at least two tubes 200, with at least one tube 200 within each corresponding side beam 120. The tubes 200 within the cavity 121 of one side beam 120 are either inlet pipes 201 or outlet pipes 203. For example, one or more inlet pipes 201 may be provided within the cavity 121 of one side beam 120, and one or more outlet pipes 203 may be provided within the cavity 121 of the other side beam 120. The inlet pipe 201 or outlet pipe 203 may have one end connected to the outside to form an inlet 202 or an outlet 204, or both ends may be connected to the outside. Alternatively, a connecting structure may be provided within the side beam 120 to connect the liquid passage hole 210 and the mounting cavity 110, or a connecting structure may be provided on the tube 200, with the side beam 120 having a clearance structure to avoid the connecting structure of the tube 200. The liquid passage hole 210 is formed within the connecting structure of the tube 200. It should be noted that the liquid passage holes 210 on the outlet pipe 203 and the inlet pipe 201 are located on opposite sides of the mounting cavity 110. When the two side beams 120 extend along the length of the housing 100, the coolant is sprayed into the mounting cavity 110 through the liquid passage holes 210 of the inlet pipe 201, then flows along the width of the housing 100 to exchange heat with the battery cell 500, and then flows out of the mounting cavity 110 through the liquid passage holes 210 of the outlet pipe 203. Similarly, when the two side beams 120 extend along the width of the housing 100, the coolant flows along the length of the housing 100 to exchange heat. In this way, the coolant forms a reasonable flow field distribution within the mounting cavity 110, avoiding the problem of uneven local heat dissipation and improving the uniformity of heat dissipation and the reliability of the system.

[0037] In one embodiment, please refer to Figures 2 to 4 The tube body 200 is provided with a connector 300, which is connected to the side beam 120. Specifically, the connector 300 can be reliably fixed to the side beam 120 using fasteners such as bolts, clips, or welding. It is understood that the connector 300 not only ensures the stability of the tube body 200 within the cavity 121 of the side beam 120, preventing displacement or damage to the tube body 200 due to vibrations during vehicle operation, but also enhances the overall structural strength of the side beam 120. In the event of a collision or impact, the connector 300 can distribute the force to various parts of the tube body 200 and the side beam 120, reducing local stress concentration in the side beam 120, thereby ensuring the stability of the battery pack housing 100. Alternatively, in other embodiments, the end of the tube body 200 can extend out of the side beam 120, connecting the end of the tube body 200 to an external component, so that the cavity 121 of the tube body 200 and the side beam 120 only have an abutment relationship without a fixed relationship.

[0038] Furthermore, in this embodiment, please refer to Figure 3 and Figure 4The connector 300 is hollow, and the flow channel of the tube 200 is connected to the mounting cavity 110 through the hollow shaft of the connector 300. It can be understood that the hollow shaft of the connector 300 connects the space inside the tube 200 with the mounting cavity 110 of the housing 100, allowing coolant to be directly introduced or exported via the hollow shaft of the connector 300. Thus, the hollow connector 300, while connecting the tube 200 to the side beam 120, also functions as a fluid channel, achieving integrated installation and flow conduction functions. This avoids the need for an additional independent flow guiding structure and improves the utilization rate of the internal space of the side beam 120. Simultaneously, the connector 300 has sufficient stability, which helps ensure the stability of the connection between the space inside the tube 200 and the mounting cavity 110. In this embodiment, the tube body 200 may have all the liquid passage holes 210 formed in the hollow shaft of the connector 300. Alternatively, some of the liquid passage holes 210 may be connected to the mounting cavity 110 via the hollow channel of the connector 300, or some of the liquid passage holes 210 may be connected to the mounting cavity 110 independently of the connector 300. Of course, in other embodiments, the connector 300 may only serve as a fixing component, with all the liquid passage holes 210 being set independently of the connector 300 and connected to the mounting cavity 110.

[0039] In one embodiment, please refer to Figure 3 , Figure 4The connector 300 includes a hollow stud and a nut. One end of the hollow stud is fixedly connected to the tube body 200, and the liquid passage 210 is formed in the hollow shaft of the hollow stud. The nut is connected to the other end of the hollow stud outside the cavity 121 of the side beam 120. It can be understood that the tube body 200 is connected to the side beam 120 via the hollow stud and nut, enabling separate and detachable assembly. One approach is to first fix the hollow stud to the tube body 200, either integrally formed or separately connected, so that the liquid passage hole 210 is formed as the hollow shaft of the hollow stud. After the cavity 121 of the side beam 120 is inserted into the tube body 200, the hollow stud extends from the cavity 121 of the side beam 120 into the mounting cavity 110, and then a nut is locked to the hollow stud on one side of the mounting cavity 110. Alternatively, the tube body 200 may have an opening for connecting the hollow stud. The cavity 121 of the side beam 120 is first inserted into the tube body 200, and the opening is aligned with the clearance hole 123 of the side beam 120. On one side of the mounting cavity 110, the hollow stud passes through the clearance hole 123 and connects to the opening of the tube body 200, so that the liquid passage hole 210 is formed as the hollow shaft of the hollow stud. Finally, a nut is locked to the hollow stud on one side of the mounting cavity 110. In this way, the connection function and fluid channel function are integrated into the hollow stud, allowing the coolant to flow into the mounting cavity 110 not only through other fluid passages 210 on the main body of the tube 200, but also directly into the mounting cavity 110 through the hollow shaft of the hollow stud, i.e., the fluid passages 210 on it. This further increases the flow path and distribution density of the coolant outlet points, improving the uniformity and efficiency of heat dissipation. In addition, this connection method eliminates the need for complex fixing structures inside the side beam 120, simplifying assembly and maintenance. Furthermore, the hollow stud, as a local reinforcement, can also enhance the local structural rigidity of the side beam 120 in the connection area, achieving the integration of multiple functions such as connection, flow guidance, and reinforcement.

[0040] In another embodiment, please refer to Figure 3 and Figure 4The connector 300 is configured as a hollow bolt, and the liquid passage hole 210 is configured as a threaded hole. The hollow bolt is connected to the liquid passage hole 210 from the cavity 121 of the side beam 120. It can be understood that the hollow bolt and the tube body 200 are formed separately. The side wall of the tube body 200 has a liquid passage hole 210. The peripheral wall of the liquid passage hole 210 is provided with internal threads for connection with the hollow bolt. The tube body 200 is first inserted into the cavity 121 of the side beam 120, and the liquid passage hole 210 is aligned with the clearance hole 123 of the side beam 120. On one side of the mounting cavity 110, the hollow bolt passes through the clearance hole 123 and connects with the liquid passage hole 210, until the head of the hollow bolt abuts against the side wall of the side beam 120 adjacent to the mounting cavity 110. In this way, the coolant flow path is integrated with the fixing structure of the pipe body 200. The hollow shaft of the hollow bolt is connected to the flow channel of the pipe body 200 through a threaded liquid passage hole 210, allowing the coolant to be directly introduced into the mounting cavity 110 through the internal channel of the hollow bolt. At the same time, the assembly method of directly locking the hollow bolt from the outside simplifies the installation process, avoids complex operations inside the cavity 121 of the side beam 120, and improves assembly efficiency and maintainability. In addition, while ensuring the stable fixing of the pipe body 200 and resisting vibration and impact, the hollow bolt also enhances the overall strength of the side beam 120, preventing loosening or fatigue damage caused by long-term thermal cycling or load.

[0041] In one embodiment, please refer to Figure 3 and Figure 4The housing assembly also includes a sealing gasket 400. The side beam 120 includes a mounting wall 124 adjacent to the mounting cavity 110. The mounting wall 124 has a clearance hole 123. A connector 300 passes through the clearance hole 123. The sealing gasket 400 is sandwiched between the pipe body 200 and the mounting wall 124 and has a portion that surrounds at least the periphery of the clearance hole 123. It is understood that the connector 300 (such as the hollow bolt or hollow stud mentioned above) passes through the clearance hole 123 to achieve the connection and fixation between the pipe body 200 and the side beam 120. The sealing gasket 400 fills the gap between the pipe body 200 and the mounting wall 124, provides elastic compression compensation during the tightening of the connector 300, ensures the sealing reliability of the connection area, and prevents coolant leakage from the periphery of the clearance hole 123. In this embodiment, the sealing gasket 400 can be bonded to the pipe body 200, and a through hole can be formed corresponding to the liquid passage hole 210. The through hole and the clearance hole 123 are coaxially arranged. After the connector 300 passes through the clearance hole 123, the sealing gasket 400 has a continuous portion around the periphery of the clearance hole 123 to completely block the potential leakage path formed by the connector 300 passing through, thereby improving the sealing performance of the mounting cavity 110. In addition, the sealing gasket 400 also plays a role in buffering and vibration reduction, which can absorb the slight displacement caused by vibration during vehicle operation, reduce the collision between the side beam 120 and the pipe body 200, and ensure the stability of the pipe body 200 within the cavity 121 of the side beam 120. Of course, in other embodiments, a sealing ring can also be provided on one side of the mounting cavity 110 along the periphery of the clearance hole 123, and the head of the hollow bolt or the nut can be pressed against the sealing ring on the mounting wall 124.

[0042] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 5 In the extending direction of the tube body 200, the spacing between multiple liquid-passing holes 210 is adapted to the distribution density of the battery cells 500. The spacing between these holes 210 along the extending direction of the tube body 200 is designed to adapt to the distribution density of the battery cells 500 within the mounting cavity 110. Specifically, in areas where the battery cells 500 are densely arranged, the distribution density of the liquid-passing holes 210 is increased, and the spacing between the holes is decreased to increase the amount of coolant sprayed and the frequency of heat exchange. Conversely, in areas where the battery cells 500 are sparse or absent, the distribution density of the liquid-passing holes 210 is decreased, and the spacing between the holes is increased to reasonably reduce the ineffective output of the cooling medium. This ensures that the coolant supply matches the heat load distribution of the battery cells 500, achieving precise heat dissipation and effectively avoiding the problems of localized overcooling or insufficient heat dissipation caused by traditional uniform hole arrangement, thus improving the uniformity of heat dissipation and cooling efficiency. Meanwhile, by optimizing the correspondence between the arrangement of the liquid passage holes 210 and the layout of the battery cells 500, the waste of coolant in low heat load areas is reduced, and the energy efficiency of the cooling system is improved. Of course, in other embodiments, multiple liquid passage holes 210 may be evenly distributed along the extension direction of the tube body 200.

[0043] In one embodiment, please refer to Figure 2 and Figure 5 One end of the inlet pipe 201 is provided with an inlet 202, and one end of the outlet pipe 203 is provided with an outlet 204. Along the extension direction of the inlet pipe 201 and in a direction away from the inlet 202, the diameter of the plurality of liquid passage holes 210 on the inlet pipe 201 gradually increases, and / or, along the extension direction of the outlet pipe 203 and in a direction away from the outlet 204, the diameter of the plurality of liquid passage holes 210 on the outlet pipe 203 gradually increases. It can be understood that the coolant flows into the inlet pipe 201 from the inlet 202, enters the mounting cavity 110 through the liquid passage 210 to cool the battery cell 500, and then flows back through the liquid passage 210 of the outlet pipe 203 and is discharged from the outlet 204. Specifically, in the extension direction of the pipe body 200, from the direction away from the inlet 202 or outlet 204, the diameter of the multiple liquid passages 210 on the inlet pipe 201 or outlet pipe 203 gradually increases, making the liquid passages on the inlet pipe 201 closer to the inlet... The diameter of the liquid passage holes 210 on the water inlet 202 or the outlet pipe 203 near the outlet 204 is relatively small, while the diameter of the liquid passage holes 210 on the inlet pipe 201 away from the outlet 204 on the outlet pipe 203 gradually increases to balance the flow velocity and pressure distribution. This ensures that the liquid flow rate of each liquid passage hole 210 along the entire length of the pipe body 200 is relatively uniform, avoiding the "uneven flow" phenomenon caused by pressure drop at the near end and the far end in the equal diameter hole design. In this way, the coolant can achieve more uniform spraying and return along the length of the side beam 120, improving the overall temperature consistency of the battery cell 500, preventing local heat accumulation, and improving the thermal management accuracy and safety of the battery pack. Of course, in other embodiments, the diameters of the multiple liquid passage holes 210 on the inlet pipe 201 or the outlet pipe 203 can also be set to be consistent.

[0044] Regarding the placement of the inlet 202 and outlet 204, in one embodiment, please refer to... Figure 1 and Figure 5The inlet pipe 201 has an inlet 202 at one end, and the outlet pipe 203 has an outlet 204 at one end. The inlet 202 and outlet 204 are arranged in the same direction. It can be understood that the inlet 202 and outlet 204 are located on the same side of the housing 100 or lead out in the same direction. This concentrates the external piping interfaces of the cooling system on a single side of the battery pack, facilitating connection with the vehicle's cooling circuit's inlet and outlet pipes in the same location. This reduces the length and number of bends in the external connecting pipes, lowering assembly complexity and reducing leakage risk. Simultaneously, the coolant flows in from the inlet pipe 201, undergoes heat exchange in the mounting cavity 110, and then flows back through the outlet pipe 203. The co-directional inlet 202 and outlet 204 shorten the flow distance of the coolant within the mounting cavity 110, allowing for rapid coolant replacement and ensuring heat exchange efficiency. Of course, in other embodiments, the inlet 202 of the inlet pipe 201 and the outlet 204 of the outlet pipe 203 may be located at opposite ends.

[0045] In one embodiment, please refer to Figure 3 and Figure 4 The cavity 121 includes multiple parallel extending compartments 122. A tube 200 is disposed within one compartment 122, with its lower side abutting against the lower sidewall of the corresponding compartment 122. It can be understood that the compartments 122 are formed by reinforcing ribs or partitions within the side beam 120, constituting a structurally ordered array of chambers. The tube 200 (including an inlet pipe 201 or an outlet pipe 203) is housed within one of the compartments 122, with its lower side abutting against the lower sidewall of that compartment 122 along its length. Thus, the compartments 122 support the tube 200. The surface contact between the lower sidewall of the compartment 122 and the lower side of the tube 200 improves the installation stability and vibration resistance of the tube 200 within the cavity 121 of the side beam 120, and also reduces the bending stress on the connector 300. Furthermore, the multiple compartments 122 enhance the overall bending and torsional stiffness of the side beam 120, while integrating the tube body 200 into a single compartment 122 achieves efficient utilization of functional components and structural space, avoiding the need for additional mounting brackets or protective sleeves and simplifying the installation structure of the tube body 200 within the cavity 121 of the side beam 120. Alternatively, in other embodiments, a support frame can be provided on the outer periphery of the tube body 200, with the tube body 200 braced against the cavity wall of the side beam 120 cavity 121 to ensure the stability of the tube body 200 within the cavity 121.

[0046] This utility model also proposes a battery pack, which includes a housing assembly. The specific structure of the housing assembly is as described in the above embodiments. Since this battery pack 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, which will not be elaborated here. For example, Figure 1As shown, a battery cell 500 is arranged in the mounting cavity 110 of the housing 100. A tube 200 in the cavity 121 of the side beam 120 of the housing 100 connects to the mounting cavity 110 via a liquid passage 210. Coolant can enter the mounting cavity 110 through the liquid passage 210 of the inlet pipe 201 to dissipate heat from the battery cell 500, and then leave the mounting cavity 110 through the liquid passage 210 of the outlet pipe 203. It is understood that the coolant cools the battery cell 500 by immersion, so the coolant will not react with the battery cell 500. If the coolant is configured as insulating cooling oil, the liquid passage 210 can be configured as a spray hole to spray onto the side wall of the battery cell 500, improving heat exchange efficiency. Here, when the battery cell 500 needs cooling, the coolant plays a heat dissipation role; when the battery cell 500 needs heating, the coolant plays a heating role.

[0047] This utility model also proposes a vehicle that includes a battery pack. The specific structure of the battery pack is as described in the above embodiments. Since this vehicle pack 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, which will not be described in detail here.

[0048] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A housing assembly, characterized in that, include: The enclosure includes two opposing side beams and a mounting cavity for installing the power supply core. as well as A cooling assembly comprising at least two pipes, each pipe including at least one inlet pipe and at least one outlet pipe. The inlet pipe is installed in the cavity of one side beam, and the outlet pipe is installed in the cavity of the other side beam. Each pipe runs parallel to the side beam, and each pipe has a plurality of liquid passage holes spaced apart along its length, the liquid passage holes communicating with the mounting cavity.

2. The housing assembly as described in claim 1, characterized in that, The tube body is provided with a connector, which is connected to the side beam.

3. The housing assembly as described in claim 2, characterized in that, The connector is hollow, and the flow channel of the tube body is connected to the mounting cavity through the hollow shaft of the connector.

4. The housing assembly as described in claim 3, characterized in that, The connector includes a hollow stud and a nut. One end of the hollow stud is fixedly connected to the tube body. The liquid passage hole is formed on the hollow shaft of the hollow stud. The nut is connected to the other end of the hollow stud outside the cavity of the side beam. Alternatively, the connector may be configured as a hollow bolt, the liquid passage hole may be configured as a threaded hole, and the hollow bolt may be connected from outside the cavity of the side beam to the liquid passage hole.

5. The housing assembly as described in claim 3, characterized in that, The housing assembly further includes a sealing gasket, the side beam includes a mounting wall adjacent to the mounting cavity, the mounting wall has a clearance hole, the connector passes through the clearance hole, the sealing gasket is sandwiched between the pipe body and the mounting wall, and has a portion at least around the periphery of the clearance hole.

6. The housing assembly as claimed in claim 1, characterized in that, In the extending direction of the tube body, the spacing between the plurality of liquid passage holes is used to adapt to the distribution density of the battery cells; And / or, one end of the water inlet pipe is provided with a water inlet, and one end of the water outlet pipe is provided with a water outlet. Along the extension direction of the water inlet pipe and in a direction away from the water inlet, the diameter of the plurality of liquid passage holes on the water inlet pipe gradually increases. And / or, along the extension direction of the water outlet pipe and in a direction away from the water outlet, the diameter of the plurality of liquid passage holes on the water outlet pipe gradually increases.

7. The housing assembly as claimed in claim 1, characterized in that, The water inlet pipe has an inlet at one end, and the water outlet pipe has an outlet at one end, with the inlet and outlet facing the same direction.

8. The housing assembly as claimed in any one of claims 1 to 7, characterized in that, The cavity includes multiple parallel extending compartments, and the tube is disposed in one of the compartments, with the lower side of the tube abutting against the lower sidewall of the corresponding compartment.

9. A battery pack, characterized in that, Includes the housing assembly as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the battery pack as described in claim 9.

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