Battery pack shell and vehicle

Abstract

The utility model provides a battery pack shell and a vehicle. The battery pack shell comprises a bottom plate and a surrounding structure arranged on one side of the bottom plate. And the bottom plate and the surrounding structure are encircled to form a mounting space. And the bottom plate is provided with a bottom runner. And the surrounding structure is provided with a side runner. And the bottom runner and the side runner are independently arranged. As the bottom plate and the surrounding structure are both provided with the flow channels, the battery pack shell can simultaneously utilize the bottom flow channel and the side flow channels to carry out heat dissipation or heat preservation on the battery cells, direct heat exchange between the surrounding structure and air is avoided, and the temperature regulation and control capability of the battery pack shell is improved. Meanwhile, the bottom runner and the side runner are independently arranged and can independently regulate and control the temperature of the battery cell, so that the temperature regulation and control capability of the battery pack shell is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a battery pack shell and a vehicle. BACKGROUND

[0002] With the continuous development of vehicles, new energy vehicles have gradually become popular. The electric core is an energy supply element in the vehicle, which provides power for the vehicle to run. In the process of popularization of new energy vehicles, the electric core has also developed rapidly. Temperature is an important factor affecting the working efficiency of the electric core, both to ensure heat dissipation during high-rate charging and to ensure heat preservation under low-temperature conditions.

[0003] The battery pack shell includes a bottom plate and a surrounding structure located on one side of the bottom plate, and the electric core is installed in the space surrounded by the bottom plate and the surrounding structure. At present, the battery pack shell is only provided with a flow channel on the bottom plate, and the surrounding structure directly exchanges heat with the air, and the temperature regulation is poor. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a battery pack shell to solve the related technical problems.

[0005] The present application provides a battery pack shell, which includes a bottom plate and a surrounding structure arranged on one side of the bottom plate; the bottom plate and the surrounding structure form an installation space, the bottom plate is provided with a bottom flow channel, and the surrounding structure is provided with a side flow channel; the bottom flow channel and the side flow channel are independently arranged.

[0006] Since the bottom plate and the surrounding structure are both provided with flow channels, the battery pack shell can simultaneously use the bottom flow channel and the side flow channel to dissipate heat or preserve heat for the electric core, avoiding the surrounding structure directly exchanging heat with the air, and improving the temperature regulation capability of the battery pack shell. At the same time, since the bottom flow channel and the side flow channel are independently arranged, they can independently regulate the temperature of the electric core, further improving the temperature regulation capability of the battery pack shell.

[0007] Further, the surrounding structure includes a first beam body and a second beam body arranged oppositely, and the side flow channel includes a first flow channel arranged on the first beam body and a second flow channel arranged on the second beam body. By arranging multiple flow channels, the temperature regulation capability of the battery pack shell is further improved.

[0008] Further, the first flow channel and the second flow channel are independently arranged. Since the first flow channel and the second flow channel are independently arranged, the battery pack shell has independently arranged flow channels on the bottom plate, the first beam body and the second beam body. The bottom flow channel, the first flow channel and the second flow channel can independently regulate the temperature of the electric core, further improving the temperature regulation effect of the battery pack shell on the internal electric core.

[0009] Further, the first beam body comprises a beam main body, and the first flow channel is arranged in the beam main body; the first flow channel passes through both ends of the beam main body and forms an inlet and an outlet at both ends of the beam main body respectively. This arrangement reduces the difficulty of forming the first flow channel and improves the production efficiency of the battery pack shell.

[0010] Further, the first beam body further comprises a partition plate arranged in the first flow channel, the partition plate divides the first flow channel into a plurality of subspaces, and the subspaces pass through both ends of the beam main body and form a sub-inlet and a sub-outlet at both ends of the beam main body respectively. By arranging the partition plate, the strength of the first beam body is improved. At the same time, since a plurality of subspaces are formed, each subspace can be used as a separate flow channel, and the user can select the corresponding subspace according to the actual needs, thereby improving the application range of the battery pack shell.

[0011] Further, the plurality of subspaces comprises a first group and a second group, in the subspaces of the first group, the sub-inlet is provided with an inlet joint, and the sub-outlet is provided with an outlet joint; in the subspaces of the second group, the sub-inlet is provided with a first sealing plate, and the sub-outlet is provided with a second sealing plate. The user can use only part of the subspaces as the flow channel for temperature regulation. For the unused subspaces, the sub-inlet and the sub-outlet are sealed by the sealing plates to block the air and reduce the heat exchange between the battery pack shell and the air, thereby reducing the influence on the temperature regulation process, and further enhancing the temperature regulation capability of the battery pack shell.

[0012] Further, the surrounding structure further comprises a third beam body and a fourth beam body, the third beam body connects one end of the first beam body opposite to the second beam body, and the fourth beam body connects the other end of the first beam body opposite to the second beam body. The third beam body and the fourth beam body connect the two ends of the first beam body and the second beam body, thereby improving the structural strength of the surrounding structure.

[0013] Further, the surrounding structure further comprises a reinforcing beam body, the reinforcing beam body is connected to a position between the two ends of the first beam body and the second beam body. By arranging the reinforcing beam body, the structural strength of the surrounding structure is further improved.

[0014] Further, the surrounding structure is provided with a vehicle body connecting portion, the vehicle body connecting portion is protruded from the surrounding structure towards a side away from the mounting space. The vehicle body connecting portion with the protruded structure has high strength, thereby improving the mounting strength of the battery pack shell itself.

[0015] The application provides a vehicle, comprising an electric core and the battery pack shell, the electric core is assembled into the electric core mounting space. The battery pack shell has good temperature regulation capacity, which improves the use experience of the vehicle. On the one hand, in a high temperature environment, the electric core can be well cooled, the service life of the electric core is improved, and the safety of the vehicle is ensured. On the other hand, in a low temperature environment, the electric core can be well heated, the performance of the electric core is improved, and the endurance of the vehicle is ensured.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present specification, and together with the specification serve to explain the principles of the present specification.

[0018] Figure 1 is a structural diagram of a battery pack shell in an exemplary embodiment of the present application;

[0019] Figure 2 is a structural diagram of a first beam body in Figure 1

[0020] Figure 3 is a partial enlarged view of A in Figure 1

[0021] Figure 4 is a partial enlarged view of B in Figure 2

[0022] BRIEF DESCRIPTION OF DRAWINGS: bottom plate-10; mounting space-100; surrounding structure-20; side flow channel-200; first flow channel-201; sub-space-2011; inlet-202; sub-inlet-2021; first beam body-21; beam main body-211; partition plate-212; first sealing plate-213; protruding structure-214; second beam body-22; third beam body-23; cable joint-231; fourth beam body-24; reinforcing beam body-25; vehicle body connecting part-26; inlet joint-30; outlet joint-40. DETAILED DESCRIPTION

[0023] Hereinafter, the technical solutions in the embodiments (or "embodiments") of the present application will be described clearly and completely with reference to the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0024] ​​​If the application embodiments involve terms of direction indication or positional relationship (for example, up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings); if the specific posture changes, the direction indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0025] At present, in order to regulate the temperature of the battery cell, a corresponding flow channel is usually arranged on the bottom plate of the battery pack shell, but this temperature regulation method has poor effect. On the one hand, in a high-temperature environment, the heat dissipation efficiency is low, which reduces the service life of the battery cell. On the other hand, in a low-temperature environment, the heat preservation effect is insufficient, which reduces the working efficiency of the battery cell. The application provides a battery pack shell and a vehicle to solve the related technical problems.

[0026] As shown in Figure 1 and Figure 2 The application provides a battery pack shell, which comprises a bottom plate 10, an enclosing structure 20, an inlet joint 30 and an outlet joint 40. The enclosing structure 20 is arranged on one side of the bottom plate 10. The bottom plate 10 and the enclosing structure 20 form a mounting space 100. The bottom plate 10 is provided with a bottom flow channel (not shown in the figure). The enclosing structure 20 is provided with a side flow channel 200. The bottom flow channel and the side flow channel 200 are independently arranged.

[0027] Since the bottom plate 10 and the enclosing structure 20 are both provided with flow channels, the battery pack shell can simultaneously use the bottom flow channel and the side flow channel 200 to dissipate heat or preserve heat for the battery cell, avoiding the enclosing structure 20 directly exchanging heat with air, and improving the temperature regulation capability of the battery pack shell.

[0028] At the same time, since the bottom flow channel and the side flow channel 200 are independently arranged, they can independently regulate the temperature of the battery cell, further improving the temperature regulation capability of the battery pack shell. The specific structure of the bottom flow channel is not limited, and it can be independent of the side flow channel 200.

[0029] The application also provides a vehicle, which comprises a battery cell (not shown in the figure) and the above-mentioned battery pack shell, and the battery cell is assembled into the mounting space 100. The vehicle of the application is not limited, and can be an electric vehicle or a hybrid vehicle.

[0030] The battery pack shell has good temperature regulation capability, thereby improving the use experience of the vehicle. On the one hand, in a high-temperature environment, the battery cell can be well cooled, thereby prolonging the service life of the battery cell and ensuring the safety of the vehicle. On the other hand, in a low-temperature environment, the battery cell can be well heated, thereby improving the performance of the battery cell and ensuring the endurance of the vehicle.

[0031] The bottom flow channel and the side flow channel 200 can be connected to the thermal management system of the whole vehicle to regulate the temperature of the battery pack. In a low-temperature environment, the bottom flow channel and the side flow channel 200 can use the waste heat of the motor to heat the battery cell, thereby improving the heating effect of the battery pack shell on the battery cell. The bottom flow channel and the side flow channel 200 are isolated on the battery pack shell, but when they are connected to the thermal management circuit of the vehicle, they can be connected through the external circuit of the battery pack shell according to the actual thermal management requirement.

[0032] The surrounding structure 20 can include a first beam body 21, a second beam body 22, a third beam body 23, and a fourth beam body 24. The beam body structure can improve the structural strength of the battery pack shell. The first beam body 21 and the second beam body 22 are arranged opposite to each other. The first beam body 21 and the second beam body 22 are arranged along the longitudinal direction of the vehicle. The third beam body 23 and the fourth beam body 24 are arranged along the transverse direction of the vehicle. The third beam body 23 is provided with a cable joint 231 for connecting the cable.

[0033] The side flow channel 200 can include a first flow channel 201 and a second flow channel (not shown in the figure). The first flow channel 201 is arranged on the first beam body 21. The second flow channel is arranged on the second beam body 22. By arranging multiple flow channels, the temperature regulation capability of the battery pack shell is further improved.

[0034] The first flow channel 201 and the second flow channel can be independently arranged. Since the first flow channel 201 and the second flow channel are independently arranged, the battery pack shell has independently arranged flow channels on the bottom plate 10, the first beam body 21, and the second beam body 22. The bottom flow channel, the first flow channel 201, and the second flow channel can independently regulate the temperature of the battery cell, thereby further improving the temperature regulation effect of the battery pack shell on the internal battery cell. In other embodiments, the first flow channel 201 and the second flow channel can be arranged in communication.

[0035] The structures of the first beam body 21 and the second beam body 22 can be the same or different. In the embodiment where the structures of the first beam body 21 and the second beam body 22 are the same, the first beam body 21 and the second beam body 22 can be symmetrically arranged on the two sides of the battery pack shell. The structure of the first beam body 21 is described in detail below, and the structure of the second beam body 22 is not described in detail.

[0036] The first beam body 21 can include a beam main body 211, and the first flow channel 201 is arranged in the beam main body 211. The first flow channel 201 passes through both ends of the beam main body 211 and forms an inlet 202 and an outlet (not shown in the figure) at both ends of the beam main body 211 respectively. This arrangement reduces the manufacturing difficulty of the first flow channel 201 and improves the production efficiency of the battery pack shell. Specifically, the first beam body 21 can be extruded and formed to have a hollow cavity inside, and the hollow cavity forms the first flow channel 201.

[0037] As shown in Figures 2 to 4 The first beam body 21 can further include a partition plate 212. The partition plate 212 is arranged in the first flow channel 201. The partition plate 212 divides the first flow channel 201 into a plurality of sub-spaces 2011, and the sub-spaces 2011 pass through both ends of the beam main body 211 and form a sub-inlet 2021 and a sub-outlet (not shown in the figure) at both ends of the beam main body 211 respectively.

[0038] By arranging the partition plate 212, the beam main body 211 can be supported from the inside, thereby improving the strength of the first beam body 21. At the same time, since a plurality of sub-spaces 2011 are formed, each sub-space 2011 can serve as a separate flow channel, and the user can select the corresponding sub-space 2011 according to the actual needs, thereby improving the application range of the battery pack shell.

[0039] The plurality of sub-spaces 2011 include a first group and a second group. In the sub-spaces 2011 of the first group, the sub-inlets 2021 are provided with inlet connectors 30, and the sub-outlets are provided with outlet connectors 40. In the sub-spaces 2011 of the second group, the sub-inlets 2021 are provided with a first sealing plate 213, and the sub-outlets are provided with a second sealing plate (not shown in the figure). In order to facilitate the installation of the connectors, the beam main body 211 can be provided with a protruding structure 214 at the position where the connector is installed.

[0040] The user can select only part of the sub-spaces 2011 as the flow channel for temperature regulation. For the sub-spaces 2011 that are not used, the sub-inlets 2021 and the sub-outlets are sealed by the sealing plates, which can reduce the heat exchange between the battery pack shell and the air and reduce the influence on the temperature regulation process, thereby further enhancing the temperature regulation capability of the battery pack shell.

[0041] Specifically, the user can select the corresponding sub-spaces 2011 according to the installation space of the vehicle, install the inlet connectors 30 at the corresponding sub-inlets 2021, and install the outlet connectors 40 at the corresponding sub-outlets. For example: Figure 3In the illustrated embodiment, the bottommost subspace 2011 is used as a temperature-controlled flow channel, and the sub-inlets 2021 and sub-outlets of the remaining subspaces 2011 are blocked. In other embodiments, the number of inlet connectors 30 and outlet connectors 40 may also be multiple, and multiple subspaces 2011 may be used as temperature-controlled flow channels.

[0042] like Figure 1 As shown, the third beam 23 connects to one end of the first beam 21 and the second beam 22, while the fourth beam 24 connects to the other end of the first beam 21 and the second beam 22. By connecting the two ends of the first beam 21 and the second beam 22 through the third beam 23 and the fourth beam 24, the first beam 21 and the second beam 22 can be supported, thereby improving the structural strength of the surrounding structure 20.

[0043] In one embodiment, such as Figure 1 As shown, the enclosure structure 20 also includes a reinforcing beam 25. The reinforcing beam 25 connects the two ends of the first beam 21 and the second beam 22. By providing the reinforcing beam 25, the structural strength of the enclosure structure 20 is further improved.

[0044] In one embodiment, such as Figure 1 As shown, the enclosure structure 20 is provided with a body connection portion 26. The body connection portion 26 protrudes from the enclosure structure 20 toward the side opposite to the mounting space 100. Since the body connection portion 26 is a protruding structure, it has high strength, thereby improving the installation strength of the battery pack housing.

[0045] Specifically, the body connection part 26 can be a hollow beam shape and integrally extruded with the beam body 211 to reduce the manufacturing difficulty of the battery pack casing. The body connection part 26 can be connected to the vehicle body by means of screwing, snap-fitting, etc., and the specific connection method is not limited.

[0046] In addition to the beam structure, the enclosure structure 20 can also be formed by welding sheet metal parts or plate parts. The sheet metal parts or plate parts can have internal flow channels to regulate the temperature of the battery cells. An insulating coating can be provided on the side of the enclosure structure 20 facing away from the installation space 100 to reduce heat exchange between the battery pack casing and the external air, thus minimizing the impact on temperature regulation.

[0047] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery pack housing, characterized by, The application relates to a battery pack shell. The bottom plate and the surrounding structure form an installation space.

2. The battery pack housing of claim 1, wherein, The surrounding structure comprises a first beam body and a second beam body.

3. The battery pack enclosure of claim 2, wherein, The first beam body comprises a beam main body, and the first flow channel is arranged in the beam main body.

4. The battery pack enclosure of claim 2, wherein, The first beam body further comprises a partition plate arranged in the first flow channel.

5. The battery pack enclosure of claim 4, wherein, The first beam body further comprises a partition plate arranged in the first flow channel.

6. The battery pack enclosure of claim 5, wherein, The first beam body further comprises a partition plate arranged in the first flow channel.

7. The battery pack enclosure of claim 2, wherein, The first beam body further comprises a partition plate arranged in the first flow channel.

8. The battery pack enclosure of claim 7, wherein, The first beam body further comprises a partition plate arranged in the first flow channel.

9. The battery pack enclosure of claim 1, wherein, The first beam body further comprises a partition plate arranged in the first flow channel.

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