Module connection structure and power battery

Abstract

A module connection structure and a power battery, relating to the technical field of batteries. The module connection structure comprises: modules; joining members, wherein each joining member comprises a first connecting portion (5) and a second connecting portion (6), and the first connecting portion (5) is connected to a corresponding module; and a support base (10), wherein the second connecting portions (6) of the joining members on adjacent modules are stacked and fixed to the same support base (10). According to the module connection structure, by partially stacking the joining members, the overlapping portion of the two joining members is fixed to the same support base (10) so as to connect two modules in series; thus, the connection strength and connection stability between the joining members and the modules and between the joining members are ensured, the space occupied by the module connection position is effectively reduced, the connection difficulty is reduced, and the time consumed by the module connection process is reduced; in addition, the present invention can effectively reduce the size of a voltage integration section, and is suitable for most types of module connection and battery pack assembly processes.

Description

Module connection structure and power battery

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2023221522877, entitled “Module connection structure and power battery,” filed with the Patent Office of China on August 10, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a module connection structure and a power battery. Background Art

[0004] As demand increases, so too does the need for electric vehicle range, and the power requirements for battery packs are also increasing. To achieve higher power, the cell and module sizes are also increasing, which in turn increases assembly difficulty, making assembly more difficult and time-consuming for workers. Furthermore, if the module length increases indefinitely, the voltage integration and acquisition sections become more difficult, making manufacturing feasibility difficult to control.

[0005] Application Contents

[0006] In view of this, the purpose of this application is to provide a module connection structure and a power battery, so as to solve, to a certain extent, the technical problems in the prior art that the assembly of existing battery packs, especially large-capacity and large-size battery packs, is difficult and time-consuming.

[0007] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0008] The present application provides a module connection structure, comprising: a module;

[0009] A converging member, the converging member comprising a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the module;

[0010] A support base, wherein the second connection portions of the current collecting components on adjacent modules are stacked and fixed to the same support base.

[0011] In the above technical solution, further, the collecting component further includes a bent connection portion, and the bent connection portion is located between the first connection portion and the second connection portion.

[0012] In any of the above technical solutions, further, the first connecting portion is provided with a first fixing portion, and the first fixing portion is connected to the end surface of the module;

[0013] The second connecting portion is provided with a second fixing portion, and the supporting base is provided with a third fixing portion, and the second fixing portion is connected to the third fixing portion.

[0014] In any of the above technical solutions, further, the second connecting portion and the first connecting portion are located in different planes, and the second connecting portion is provided with a second fixing portion; the second connecting portion is mounted on the support base, and the second fixing portion is connected to the support base.

[0015] In any of the above technical solutions, further, the module connection structure further includes a fixed beam, the fixed beam is formed with a mounting portion, and the support base is arranged on the mounting portion;

[0016] The height of the mounting portion is lower than that of the fixing beam.

[0017] In any of the above technical solutions, further, the thickness of the mounting portion is smaller than the thickness of the fixing beam.

[0018] In any of the above technical solutions, further, a first distance is formed between the bent connection portion and the mounting portion; a second distance is formed between the module and the fixed beam, and the first distance is greater than the second distance.

[0019] In any of the above technical solutions, further, the fixed beam is provided with an insulating layer.

[0020] In any of the above technical solutions, further, the module connection structure also includes a protective cover, and the protective cover is arranged on the support base.

[0021] The present application also provides a power battery, comprising the module connection structure described in any of the above technical solutions, and thus having all the beneficial technical effects of the module connection structure, which will not be repeated here.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The module connection structure provided in the present application includes: a module; a conduit component, the conduit component includes a first connection part and a second connection part, the first connection part is connected to the module; and a support base, the second connection parts of the conduit components on adjacent modules are stacked and fixed to the same support base.

[0024] The module connection structure provided in the present application fixes the overlapping parts of two busbar components to the same support base by partially stacking the busbar components, thereby connecting the two modules in series. On the basis of ensuring the connection strength and connection stability between the busbar components and the modules, and between the busbar components, it effectively reduces the space occupied by the module connection position, reduces the connection difficulty, reduces the time consumption of the module connection process, and can effectively reduce the size of the voltage integration board. It is suitable for most types of module connection and battery pack assembly processes.

[0025] The power battery provided in the present application includes the module connection structure described above. Therefore, the module connection structure can effectively reduce the operational difficulty and time consumption of the module-to-module connection process, and at the same time can effectively reduce the space occupied by the module connection position in the battery pack, facilitate the reasonable layout of the battery pack space, and help reduce the overall size of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 is a schematic structural diagram of a module connection structure provided in an embodiment of the present application;

[0028] FIG2 is a schematic diagram of the exploded structure of the module connection structure provided in an embodiment of the present application.

[0029] Figure markings: 1-first module, 2-second module, 3-first conduit component, 4-second conduit component, 5-first connecting part, 6-second connecting part, 7-bending connecting part, 8-first fixing part, 9-second fixing part, 10-support base, 11-third fixing part, 12-fixing beam, 13-installing part, 14-fastener, 15-protective cover. DETAILED DESCRIPTION

[0030] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0031] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0032] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] The module connection structure and the power battery according to the embodiments of the present application are described below with reference to FIG1 and FIG2 .

[0036] Referring to Figures 1 and 2, an embodiment of the present application provides a module connection structure, which includes: a module, a collector component and a support base 10, wherein the collector component includes a first connection part 5 and a second connection part 6, the first connection part 5 is connected to the output pole of the module, each module is correspondingly connected to a collector component, and the second connection part 6 is connected to the support base 10, thereby ensuring the stability of the collector component relative to the module and the support base 10, and the second connection part 6 of the collector components on two adjacent modules is connected to the same support base 10, and the second connection parts 6 of the two collector components are in contact with each other and conductive, thereby connecting the two modules in series.

[0037] Specifically, the detailed description is given with the number of modules being two. The two modules are respectively a first module 1 and a second module 2. The first module 1 and the second module 2 are arranged side by side, and the poles of the battery cells in the modules are arranged on one side or both sides of the length direction of the battery cells; preferably, the first module 1 and the second module 2 have the same structure, both are rectangular, and the first module 1 and the second module 2 are arranged along the thickness direction of the module.

[0038] Furthermore, the conduit component also includes a bent connection portion 7, which is located between the first connection portion 5 and the second connection portion 6, and the bent connection portion 7 is simultaneously connected to the first connection portion 5 and the second connection portion 6. Preferably, the first connection portion 5, the bent connection portion 7 and the second connection portion 6 have an integrated structure.

[0039] The first connection part 5, the bent connection part 7, and the second connection part 6 are all in the shape of a flat plate or sheet. Preferably, the first connection part 5, the bent connection part 7, and the second connection part 6 are in different planes. In the state shown in Figure 2, the first connection part 5 extends in the vertical direction, the bent connection part 7 is arranged on the left side or right side of the first connection part 5, and the bent connection part 7 is arranged at an angle to the first connection part 5, and the bent connection part 7 is arranged facing the side wall surface of the module. Preferably, the bent connection part 7 is arranged perpendicular to the first connection part 5. The second connection part 6 is arranged on the upper side of the bent connection part 7 and extends toward one side of the support base 10. Preferably, the second connection part 6 is arranged perpendicular to the bent connection part 7.

[0040] Furthermore, the number of the busbar components is the same as the number of modules. In this embodiment, the number of the busbar components can be, but is not limited to, two, namely a first busbar component 3 and a second busbar component 4, wherein the first connection portion 5 of the first busbar component 3 is connected to the output pole at one end of the first module 1, and the second connection portion 6 of the first busbar component 3 is mounted on the support base 10 and fixed to the support base 10. Similarly, the first connection portion 5 of the second busbar component 4 is connected to the output pole at one end of the second module 2, and the second connection portion 6 of the second busbar component 4 is mounted on the support base 10 and overlaps and contacts with the second connection portion 6 of the first busbar component 3, so as to connect the first module 1 and the second module 2 in series, and the first busbar component 3 and the second busbar component 4 are fixed to the support base 10 at the same time, which can ensure the structural strength and stability of the module connection structure, and the second connection portions 6 of the two busbar components are fixed to the support base 10 in a stacked manner, which effectively reduces the space occupied by the connection position between the two modules, effectively saves and utilizes the space between the modules, and thus effectively reduces the size of the voltage integration board and the battery pack using the module connection structure.

[0041] Furthermore, the first connecting portion 5 is provided with a first fixing portion 8. Preferably, the first fixing portion 8 is a hole structure extending through the first connecting portion 5. The first connecting portion 5 is connected to the output terminal of the module. The connection method can be, but is not limited to, welding. Screws, rivets, or other fasteners are used to penetrate the first fixing portion 8 and connect to the module to ensure the connection strength between the first connecting portion 5 and the module. More preferably, there are at least two first fixing portions 8.

[0042] Furthermore, the second connecting part 6 is provided with a second fixing part 9, and the upper surface of the support base 10 is provided with a third fixing part 11. Preferably, the second fixing part 9 is a hole structure passing through the second connecting part 6, and the third fixing part 11 is a hole structure or a groove body arranged opposite the second fixing part 9. Preferably, the number of second fixing parts 9 is at least two, and the number of third fixing parts 11 is the same as the number of second fixing parts 9 and corresponds one to one. Screws, rivets or other forms of fasteners 14 are used to pass through the second fixing part 9 and then connect with the third fixing part 11 to fix the second connecting part 6 to the support base 10. By using two or more fasteners to fix the second connecting part 6 to the support base 10, it is possible to effectively prevent the second connecting part 6 and the entire convergence component from being skewed or pulled, causing cracks or even breakage at the bending part of the convergence component, thereby effectively reducing the risk of connection failure of the convergence component.

[0043] Furthermore, the module connection structure further includes a fixed beam 12, preferably a steel beam, disposed between the first module 1 and the second module 2, with a large surface of the first module 1 and a large surface of the second module 2 facing the side walls of the fixed beam 12 respectively.

[0044] In the state shown in FIG2 , a mounting portion 13 is provided on the upper side of the fixed beam 12. The mounting portion 13 is provided near the end of the fixed beam 12 and is used to accommodate the support base 10. Preferably, the mounting portion 13 is specifically a notch forming the fixed beam 12. Specifically, the height of the mounting portion 13 is less than the height of the upper side of the support base 10, so that the upper surface of the mounting portion 13 is sunken to a certain depth relative to the upper surface of the support base 10. The support base 10 is provided on the upper surface of the mounting portion 13. After the support base 10 is fixed to the mounting portion 13, the support base 10 does not protrude relative to the support base 10, thereby avoiding additional space occupation.

[0045] Preferably, the mounting portion 13 is thinned so that the thickness of the mounting portion 13 is less than the thickness of the fixed beam 12. After the second connecting portion 6 is fixed to the support base 10, a first spacing is formed between the bent connecting portion 7 of the collector component and the side wall surface of the mounting portion 13, and a second spacing is formed between the side wall of the module and the side wall of the fixed beam 12. It should be noted that the second spacing is specifically the distance between the side wall of the module and the side wall of the fixed beam 12 other than the mounting portion 13, and the first spacing is greater than the second spacing, so that the bent connecting portion 7 of the collector component and the mounting portion 13 and the side wall surface of the fixed beam 12 other than the mounting portion 13 are spaced apart and do not contact each other, thereby avoiding insulation failure. Preferably, the outer surface of the fixed beam 12 is covered with an insulating layer. More preferably, the insulating layer can be, but is not limited to, insulating tape.

[0046] Furthermore, the module connection structure includes a protective cover 15, which is made of an insulating material. The support base 10 is also made of an insulating material. The protective cover 15 is configured to cover the support base 10, thereby covering the second connection portion 6 of the first and second connection portions 6 of the first and second current collecting members 3 and 4, and the connection location with the support base 10, further enhancing the strength and stability of the connection structure.

[0047] Preferably, the protective cover 15 is hinged to the support base 10 so that the protective cover 15 can be opened or closed relative to the support base 10 in a rotating manner, which facilitates the connection and fixation of the second connecting part 6 to the support base 10. Of course, the connection method between the protective cover 15 and the support base 10 is not limited to this, and a detachable connection method such as a snap-on connection can also be used.

[0048] To sum up, the module connection structure provided in the present application fixes the overlapping parts of the two bus components to the same support base 10 by partially stacking the bus components, thereby connecting the two modules in series. On the basis of ensuring the connection strength and connection stability between the bus components and the modules, and between the bus components and the bus components, it effectively reduces the space occupied by the module connection position, reduces the connection difficulty, reduces the time consumption of the module connection process, and can effectively reduce the size of the voltage integration board. It is suitable for most types of module connection and battery pack assembly processes.

[0049] An embodiment of the present application further provides a power battery, comprising the module connection structure described in any of the above embodiments, and thus having all the beneficial technical effects of the module connection structure, which will not be described in detail here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application. Industrial Applicability

[0051] The module connection structure provided in the present application fixes the overlapping parts of two convergence components to the same support base by partially stacking the convergence components, thereby connecting the two modules in series. On the basis of ensuring the connection strength and connection stability between the convergence components and the modules, and between the convergence components and the convergence components, it effectively reduces the space occupied by the module connection position, reduces the connection difficulty, and reduces the time spent in the module connection process.

Claims

1. A module connection structure, characterized in that: include: Modules; A converging component, the converging component comprising a first connecting portion and a second connecting portion, the first connecting portion being connected to the module; A support base, wherein the second connection portions of the current collecting components on adjacent modules are stacked and fixed to the same support base.

2. The module connection structure according to claim 1, characterized in that: The current collecting member further includes a bent connection portion, and the bent connection portion is located between the first connection portion and the second connection portion.

3. The module connection structure according to claim 1, characterized in that: The first connecting portion is provided with a first fixing portion, and the first fixing portion is connected to the end surface of the module; The second connecting portion is provided with a second fixing portion, and the supporting base is provided with a third fixing portion, and the second fixing portion is connected to the third fixing portion.

4. The module connection structure according to claim 3, characterized in that: The second connection portion and the first connection portion are located in different planes, and the second connection portion is provided with a second fixing portion; the second connection portion is mounted on the support base, and the second fixing portion is connected to the support base.

5. The module connection structure according to claim 2, characterized in that: The module connection structure further includes a fixed beam, the fixed beam is formed with a mounting portion, and the support base is arranged on the mounting portion; The height of the mounting portion is lower than the height of the fixing beam.

6. The module connection structure according to claim 5, characterized in that: The thickness of the mounting portion is smaller than the thickness of the fixing beam.

7. The module connection structure according to claim 5, characterized in that: A first distance is formed between the bent connection portion and the mounting portion; a second distance is formed between the module and the fixed beam, and the first distance is greater than the second distance.

8. The module connection structure according to claim 5, characterized in that: The fixing beam is provided with an insulating layer.

9. The module connection structure according to any one of claims 1 to 8, characterized in that: The module connection structure also includes a protective cover, and the protective cover is arranged on the supporting base.

10. A power battery, characterized in that: The invention comprises the module connection structure as claimed in any one of claims 1 to 9.

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