Battery shell, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery shell, a battery pack and electric equipment, and the battery shell comprises a battery structure which is configured to be distributed along a first direction, and the battery structure is configured with a first matching part; and the welding tool is arranged to be distributed on one side of the battery structure in the first direction, the welding tool is provided with a second matching part, and the second matching part is connected with the first matching part. The welding tool is arranged on one side of the battery structure, the battery structure and the welding tool are fixed through connection of the first matching part and the second matching part, it can be guaranteed that when the battery structure is welded, the welding tool can restrain welding stress deformation, and the two ends of the battery structure cannot warp; and the mounting position and height of the battery structure are consistent, so that the requirement on battery replacement precision is met.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular, to a battery housing, a battery pack, and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] In battery-related technologies, in addition to improving the energy density of batteries, the battery swapping accuracy is also an issue that cannot be ignored. Therefore, how to improve the battery swapping accuracy is an urgent technical problem in battery technology. Summary of the Utility Model

[0004] The purpose of the embodiments of the present application is to provide a battery housing, a battery pack, and an electrical device, ensuring that the installation positions have the same height and meeting the requirements of battery swapping accuracy.

[0005] In a first aspect, the embodiments of the present application provide a battery housing, including: a battery structure configured to be distributed along a first direction, and the battery structure is configured with a first mating portion; a welding tooling configured to be distributed along the first direction on one side of the battery structure, the welding tooling is configured with a second mating portion, and the second mating portion is connected to the first mating portion.

[0006] In the above implementation process, a welding tooling is configured on one side of the battery structure, and the battery structure and the welding tooling are fixed through the connection of the first mating portion and the second mating portion. It can ensure that when the battery structure is welded, the welding tooling can inhibit the welding stress deformation, and the two ends of the battery structure will not warp, ensuring that the installation position heights of the battery structure are the same, thereby meeting the requirements of battery swapping accuracy.

[0007] In some embodiments, the first mating portion includes a pin shaft, and the second mating portion includes a groove. Through the cooperation of the pin shaft and the groove, the fixation of the welding tooling and the battery structure can be realized. Its connection method is simple and convenient, and it can ensure that when the battery structure is welded, the welding tooling can inhibit the welding stress deformation, and the two ends of the battery structure will not warp, ensuring that the installation position heights of the battery structure are the same, thereby meeting the requirements of battery swapping accuracy.

[0008] In some embodiments, the second mating portion is configured at the bottom of the welding tooling, and the opening direction of the second mating portion is downward. By setting the opening of the second mating portion of the welding tooling downward, it is convenient to disassemble and assemble the welding tooling on the battery structure, and at the same time, it can also inhibit the welding stress deformation of the battery structure, ensuring that the two ends of the battery structure will not warp.

[0009] In some embodiments, along the first direction, a plurality of the second mating portions are arranged at intervals. When the battery structure is welded, the welding tooling can be stressed at multiple points, effectively suppressing the stress deformation of the battery structure.

[0010] In some embodiments, the battery structure includes a housing assembly and a battery swapping mechanism. The battery swapping mechanism is connected to the housing assembly, the welding tooling is connected to the battery swapping mechanism, and the battery swapping mechanism and the welding tooling are located on opposite sides of the housing assembly.

[0011] In the above implementation process, the battery swapping mechanism is arranged at multiple positions on the housing assembly, and the welding tooling is adapted at these positions, which can suppress the stress deformation of the housing assembly during welding, ensure that the position heights of the battery swapping mechanisms after installation are consistent, and thus meet the battery swapping accuracy requirements.

[0012] In some embodiments, the welding tooling includes a first tooling member, a second tooling member, and a third tooling member. The end of the first tooling member is bent to form a first connection end and a second connection end. The first connection end is connected to the first tooling member, the second connection end is connected to the second tooling member, and the first tooling member, the second tooling member, and the third tooling member are all provided with the second mating portion.

[0013] In the above implementation process, after the second tooling member and the third tooling member are respectively connected to the first tooling member, the welding tooling can be arranged along the distribution direction of the housing assembly, which can well suppress the stress deformation of the housing assembly during welding, prevent the two ends of the housing assembly from warping, ensure the consistency of the position heights of the battery swapping mechanisms after installation, and meet the battery swapping accuracy requirements.

[0014] In some embodiments, two welding toolings are provided, and the two welding toolings are distributed at intervals on opposite sides of the battery structure.

[0015] In the above implementation process, welding toolings adapted to the battery swapping mechanism are provided on opposite sides of the housing assembly, which can suppress the stress deformation of the housing assembly during welding, ensure that the position heights of the battery swapping mechanisms after installation are consistent, and thus meet the battery swapping accuracy requirements.

[0016] In some embodiments, the housing assembly includes a housing frame and a bottom plate, and the bottom plate is connected to the housing frame.

[0017] In the above implementation process, the battery swapping mechanism is arranged on the housing frame, and a welding tooling adapted to the battery swapping mechanism is also arranged at this position, which can ensure that when the housing frame is connected to the bottom plate, the stress deformation of the housing frame can be suppressed, ensure the consistency of the position heights of the battery swapping mechanisms after installation, and meet the battery swapping accuracy requirements.

[0018] In a second aspect, the present application further provides a battery pack, including the battery housing described in any one of the above.

[0019] Since the battery pack provided in the second aspect includes the battery housing, the battery pack has all the technical effects of the battery housing, which will not be elaborated herein.

[0020] In a third aspect, the present application further provides an electrical device, including the battery pack described above.

[0021] Since the electrical device provided in the third aspect includes the battery pack, the electrical device has all the technical effects of the battery pack, which will not be elaborated herein.

[0022] Other features and advantages of the present disclosure will be described in the subsequent specification, or some features and advantages can be inferred from the specification or determined without doubt, or can be obtained by implementing the above technologies of the present disclosure.

[0023] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0024] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the battery housing provided for the embodiments of the present application.

[0026] Reference Signs

[0027] 100, battery structure; 101, housing frame; 102, bottom plate; 103, battery swapping mechanism; 200, welding tooling; 201, second mating part; 202, first tooling part; 203, second tooling part; 204, third tooling part. Detailed Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0029] In the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0030] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific circumstances.

[0031] In addition, the terms "mounted", "arranged", "provided with", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] Embodiment

[0034] Currently, the welding of the battery housing for battery swapping adopts the traditional welding process sequence. The housing bottom plate and the four surrounding frames are respectively placed on the welding workbench. After assembling the housing bottom plate and the housing frame, the housing bottom plate is welded to the four surrounding frames of the housing, and then the battery swapping mechanism on both sides of the frame is installed.

[0035] During the design process, the inventor found that after welding the housing bottom plate and the four surrounding frames, due to the large welding stress deformation generated during welding and the lack of a welding pressing tooling, the two ends of the housing will warp upward, resulting in the middle of the housing being low and the two sides being high. When the battery swapping mechanism is installed, the battery swapping mechanism will also warp at both ends, affecting the battery swapping accuracy of the battery swapping mechanism.

[0036] In view of this, as Figure 1 shown, in a first aspect, an embodiment of the present application provides a battery housing, including: a battery structure 100, which is configured to be distributed along a first direction, and the battery structure 100 is configured with a first mating portion; a welding tooling 200, which is configured to be distributed on one side of the battery structure 100 along the first direction, the welding tooling 200 is configured with a second mating portion 201, and the second mating portion 201 connects the first mating portion.

[0037] Exemplarily, the first direction is a horizontal direction, and the horizontal direction includes but is not limited to the left - right direction. The welding tooling 200 is used to assist the battery structure 100 in welding assembly, preventing the battery structure 100 from deforming due to stress during welding. Among them, the welding tooling 200 can be detachably connected to the battery structure 100, so that after the battery structure 100 is assembled, the welding tooling 200 is removed from the battery structure 100 to facilitate the assembly of other components inside the battery structure 100.

[0038] In the above - mentioned implementation process, a welding tooling 200 is arranged on one side of the battery structure 100, and the battery structure 100 and the welding tooling 200 are fixed through the connection between the first mating portion and the second mating portion 201. It can ensure that when the battery structure 100 is welded, the welding tooling 200 can inhibit the welding stress deformation, and the two ends of the battery structure 100 will not warp, ensuring that the installation position heights of the battery structure 100 are consistent, thus meeting the battery swapping accuracy requirements.

[0039] In some embodiments, the first mating part includes a pin shaft, and the second mating part 201 includes a groove, wherein the groove is fixed to the pin shaft by a snap connection, and the size of the groove can be set according to the actual situation of the pin shaft. Through the cooperation of the pin shaft and the groove, the fixing of the welding tooling 200 and the battery structure 100 can be realized. The connection method is simple and convenient, and it can ensure that when the battery structure 100 is welded, the welding tooling 200 can inhibit the welding stress deformation, and both ends of the battery structure 100 will not warp, ensuring that the installation position height of the battery structure 100 is consistent, thereby meeting the requirements of battery swapping accuracy.

[0040] In some embodiments, the second mating part 201 is disposed at the bottom of the welding tooling 200, and the opening direction of the second mating part 201 is downward. By arranging the opening of the second mating part 201 of the welding tooling 200 downward, it is convenient to disassemble and assemble the welding tooling 200 on the battery structure 100, and at the same time, it can also inhibit the welding stress deformation of the battery structure 100, ensuring that both ends of the battery structure 100 will not warp.

[0041] In some embodiments, along the first direction, a plurality of the second mating parts 201 are arranged at intervals, for example, eight second mating parts 201 are arranged. When the battery structure 100 is welded, the welding tooling 200 can be stressed at multiple places, effectively inhibiting the stress deformation of the battery structure 100.

[0042] Please refer to Figure 1 , the battery structure 100 includes a housing assembly and a battery swapping mechanism 103. The battery swapping mechanism 103 is connected to the housing assembly, the welding tooling 200 is connected to the battery swapping mechanism 103, and the battery swapping mechanism 103 and the welding tooling 200 are located on opposite sides of the housing assembly. For example, the battery swapping mechanism 103 is connected to the outside of the housing assembly, and the welding tooling 200 is located inside the housing assembly.

[0043] In the above implementation process, the battery swapping mechanism 103 is arranged at multiple places on the housing assembly, and the welding tooling 200 is adapted at this position, which can inhibit the stress deformation of the housing assembly during welding, ensure that the position height of the battery swapping mechanism 103 after installation is consistent, and thus meet the requirements of battery swapping accuracy.

[0044] In some embodiments, the welding tooling 200 includes a first tooling part 202, a second tooling part 203, and a third tooling part 204. The end of the first tooling part 202 is bent to form a first connection end and a second connection end. The first connection end is connected to the first tooling part 202, and the second connection end is connected to the second tooling part 203. Moreover, the first tooling part 202, the second tooling part 203, and the third tooling part 204 are all provided with the second mating part 201. For example, the first tooling part 202 is provided with five second mating parts 201, the second tooling part 203 is provided with two second mating parts 201, and the third tooling part 204 is provided with one second mating part 201. The first tooling part 202, the second tooling part 203, and the third tooling part 204 include, but are not limited to, integrally formed parts. And when the first tooling part 202, the second tooling part 203, and the third tooling part 204 are connected, the formed outer shape is consistent with the outer shape of the housing frame 101 of the housing assembly.

[0045] In the above implementation process, after the second tooling part 203 and the third tooling part 204 are respectively connected to the first tooling part 202, the welding tooling 200 can be arranged along the distribution direction of the housing assembly, which can well inhibit the stress deformation during the welding of the housing assembly, so that the two ends of the housing assembly will not warp, ensuring the consistency of the position height after the installation of the battery swapping mechanism 103 and meeting the battery swapping accuracy requirements.

[0046] In some embodiments, two welding toolings 200 are provided, and the two welding toolings 200 are spaced apart and distributed on the opposite sides of the housing assembly. For example, one welding tooling 200 is located on the front beam of the housing assembly, and the other welding tooling 200 is located on the rear beam of the housing assembly.

[0047] In the above implementation process, welding toolings 200 adapted to the battery swapping mechanism 103 are provided on the opposite sides of the housing assembly, which can inhibit the stress deformation during the welding of the housing assembly, ensure that the position heights after the installation of the battery swapping mechanism 103 are consistent, and thus meet the battery swapping accuracy requirements.

[0048] Please refer to again Figure 1 , the housing assembly includes a housing frame 101 and a bottom plate 102, and the bottom plate 102 is connected to the housing frame 101. For example, the bottom plate 102 and the housing frame 101 are fixed by welding.

[0049] In the above implementation process, a battery swapping mechanism 103 is provided on the housing frame 101, and a welding tooling 200 adapted to the battery swapping mechanism 103 is also provided at this position, which can ensure that when the housing frame 101 is connected to the bottom plate 102, the stress deformation of the housing frame 101 can be suppressed, and the position height after the installation of the battery swapping mechanism 103 is consistent, meeting the battery swapping precision requirements.

[0050] In a second aspect, the present application also provides a battery pack, including the battery housing as described above.

[0051] Since the battery pack provided in the second aspect includes the battery housing, the battery pack has all the technical effects of the battery housing, which will not be elaborated here.

[0052] In a third aspect, the present application also provides an electrical device, including the battery pack as described above.

[0053] Exemplarily, the battery pack is used to provide electrical energy for the electrical device, and the electrical device can be a vehicle, a portable device, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric airplane toy, etc. The embodiments of the present application do not impose special restrictions on the above electrical devices.

[0054] For the convenience of description in the following embodiments, a vehicle is taken as an example of an electrical device in an embodiment of the present application for illustration.

[0055] A battery pack is provided inside the vehicle, and the battery pack can be provided at the bottom, head or tail of the vehicle. The battery pack can be used for power supply of the vehicle. For example, the battery pack can be used as an operating power source of the vehicle for the electrical system of the vehicle, such as for the working power requirements during the start, navigation and operation of the vehicle.

[0056] The vehicle may further include a controller and a motor, and the controller is used to control the battery pack to supply power to the motor, for example, for the working power requirements during the start, navigation and driving of the vehicle.

[0057] In some embodiments of the present application, the battery pack can not only be used as an operating power source of the vehicle, but also be used as a driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0058] Since the electrical device provided in the third aspect includes the battery pack, the electrical device has all the technical effects of the battery pack, which will not be elaborated here.

[0059] In all embodiments of the present application, "big", "small", "many", "few", "up", and "down" are relative terms. Regarding the expression of such relative terms, the embodiments of the present application will not elaborate further.

[0060] It should be understood that the phrases "in this embodiment", "in the embodiments of the present application", or "as an alternative embodiment" mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the phrases "in this embodiment", "in the embodiments of the present application", or "as an alternative embodiment" that appear throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all alternative embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0061] In various embodiments of the present application, it should be understood that the magnitudes of the sequence numbers of the above processes do not necessarily imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not impose any limitation on the implementation process of the embodiments of the present application.

[0062] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery housing, characterized in that: include: A battery structure, which is arranged to be distributed along a first direction, and the battery structure is provided with a first matching portion; The welding tool is configured to be distributed on one side of the battery structure along the first direction, and the welding tool is configured with a second matching portion, and the second matching portion is connected to the first matching portion.

2. The battery housing according to claim 1, characterized in that: The first matching portion includes a pin shaft, and the second matching portion includes a groove.

3. The battery housing according to claim 2, characterized in that: The bottom of the welding tool is provided with the second matching portion, and the opening direction of the second matching portion is distributed downward.

4. The battery case according to claim 3, characterized in that: A plurality of the second matching portions are arranged at intervals along the first direction.

5. The battery housing according to claim 1, characterized in that: The battery structure includes a shell assembly and a power-changing mechanism, the power-changing mechanism is connected to the shell assembly, the welding tool is connected to the power-changing mechanism, and the power-changing mechanism and the welding tool are located on opposite sides of the shell assembly.

6. The battery case according to claim 1, characterized in that: The welding tooling includes a first tooling piece, a second tooling piece and a third tooling piece. The end of the first tooling piece is bent to form a first connecting end and a second connecting end. The first connecting end is connected to the first tooling piece, and the second connecting end is connected to the second tooling piece. The first tooling piece, the second tooling piece and the third tooling piece are all provided with the second mating portion.

7. The battery housing according to any one of claims 1 to 6, characterized in that: The two welding tools are configured with two welding tools, and the two welding tools are spaced apart and distributed on opposite sides of the battery structure.

8. The battery casing according to claim 5, characterized in that: The shell assembly includes a shell frame and a bottom plate, and the bottom plate is connected to the shell frame.

9. A battery pack, characterized in that: Comprising a battery casing as described in any one of claims 1 to 8.

10. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 9.

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