Multi-direction power lead-out fastening structure of battery module

Abstract

The utility model relates to the field of rail transit, in particular to a multidirectional power lead-out fastening structure of a battery module. The power lead-out fastening structure comprises a fastening base and a fastening cover arranged on the fastening base. By adopting the power lead-out fastening structure, the battery module comprises a module end plate I, a battery pack, a module end plate II, a module cover plate, a module lead-out copper bar and an external copper bar. According to the multi-direction power lead-out fastening structure of the battery module, the problems of electric leakage, looseness and the like of the power lead-out end of the battery module in the transportation, assembly and operation processes are solved, the operation stability is ensured, and the power lead-out direction is flexibly selected on the premise of enhancing insulation and stability.

Description

Technical Field

[0001] The utility model relates to the field of rail transportation, and in particular to a multi-directional power lead-out fastening structure for a battery module. Background Art

[0002] With the rapid development of electrification in my country, battery modules, as the component units of power batteries, have increasingly higher market requirements for their energy density, stability and other performance indicators. How to ensure operational stability while maximizing their energy density is a current research hotspot.

[0003] Since the power output terminal of the module needs to be connected to the outside for power output, it will inevitably be exposed to the outside of the module. During transportation, assembly and operation, the power output terminal is prone to leakage, looseness and other problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to optimize the above-mentioned power lead-out terminal problem of the module and proposes a multi-directional power lead-out fastening structure for a battery module, which can flexibly select the power lead-out direction while strengthening insulation and stability.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A multi-directional power extraction and fastening structure for a battery module.

[0007] The structure comprises a fastening base 11 and a fastening cover 12 arranged on the fastening base 11;

[0008] The fastening base 11 comprises a base body 111 surrounded by a rectangle with three sides, a lead-out copper bar bracket 112 is arranged in the base body 111; a positioning portion 1121 is arranged on the lead-out copper bar bracket 112;

[0009] The fastening cover 12 is a rectangular box-shaped body matching the fastening base 11, and is provided with a first breakout portion 1232 for connecting an external copper busbar on three sides connected to the base body 111, and a second breakout portion 1221 for connecting a module copper busbar and an external copper busbar at the same time on the fourth side;

[0010] The external copper busbar and the module lead-out copper busbar can be connected to the lead-out copper busbar bracket 112 through the positioning portion 1121 at the same time.

[0011] Preferably,

[0012] The positioning portion 1121 is a fastening threaded hole.

[0013] Preferably,

[0014] There are at least two fastening threaded holes, and holes corresponding to the fastening threaded holes are formed on the external copper busbar and the module lead-out copper busbar.

[0015] Preferably,

[0016] There are four fastening threaded holes distributed in a square shape, and the diagonal of the square is perpendicular or parallel to the edge of the lead-out copper bar bracket 112 .

[0017] Preferably,

[0018] A copper bar lead-out portion 1122 is provided at one end corresponding to the fourth side surface of the copper bar lead-out bracket 112.

[0019] The thickness of the copper bar lead-out portion 1122 is greater than the thickness of the copper bar lead-out bracket 112 ; the copper bar lead-out portion is partially in contact with the module copper bar lead-out portion.

[0020] Preferably,

[0021] The lead-out copper bar bracket 112 is provided with a gasket, and the gasket is respectively fitted with the module lead-out copper bar and the lead-out copper bar bracket 112 .

[0022] Preferably,

[0023] The base body 111 is a frame.

[0024] Preferably,

[0025] The three sides of the fastening base 11 are all provided with slots 1111 , and the three sides of the fastening cover 12 corresponding to the fastening base 11 are provided with buckles 1231 , and the slots 1111 and the buckles 1231 are overlapped.

[0026] Preferably,

[0027] The material of the power lead-out fastening structure is flame-retardant PC.

[0028] A battery module, comprising the above-mentioned battery module multi-directional power lead-out fastening structure, and also comprising a module end plate 1, a battery pack, a module end plate 2, a module cover plate, a module lead-out copper busbar, and an external copper busbar;

[0029] The power lead-out fastening structure is connected to the module end plate.

[0030] The beneficial effects of the utility model are:

[0031] The utility model provides a battery module multi-directional power lead-out fastening structure, which overcomes the problems of leakage and looseness of the power lead-out terminal of the battery module during transportation, assembly and operation, ensures operational stability, and realizes flexible selection of the power lead-out direction under the premise of strengthening insulation and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of the structure of the battery module of the utility model

[0034] Figure 2 This is a schematic diagram of the structure of the power lead-out fastening structure of the utility model.

[0035] Figure 3 Schematic diagram of the relative positions of the power lead-out fastening structure, the module lead-out copper busbar, and the external copper busbar of the utility model

[0036] Figure 4 This is a first-view structural diagram of the fastening base of the utility model

[0037] Figure 5 This is a second perspective structural diagram of the fastening base of the utility model

[0038] Figure 6 This is a first-view structural diagram of the fastening cover of the utility model

[0039] Figure 7 A second perspective structural diagram of the fastening cover of the utility model

[0040] In the figure:

[0041] 0-battery module; 1-power lead fastening structure; 2-module end plate 1; 3-battery pack; 4-module end plate 2; 5-module cover; 6-module lead copper busbar; 7-external copper busbar

[0042] 11- Fasten the base;

[0043] 111-fastening base body; 1111-card slot; 1112-base body outer frame; 1113-base cavity; 1114-base limiting threaded hole; 1115-base limiting column; 112-lead copper bar bracket; 1121-positioning part; 1122-copper bar outlet;

[0044] 12- Fasten the cover;

[0045] 121-fastening cover end plate; 122-fastening cover top side plate; 1221-second breaking part; 123-fastening cover left side plate; 124-fastening cover right side plate; 125-fastening cover bottom side plate; 1231-buckle; 1232-first breaking part DETAILED DESCRIPTION

[0046] The following is a description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the following embodiments are provided only for the purpose of illustration and are not intended to limit the scope of the present invention. Those skilled in the art may make various modifications and substitutions to the present invention without departing from the purpose and spirit of the present invention.

[0047] The utility model provides a multi-directional power lead-out fastening structure for a battery module, the material of which is flame-retardant PC or other preferred materials.

[0048] A battery module adopts the above-mentioned power lead-out fastening structure, and also includes a module end plate 1 2, a battery pack 3, a module end plate 2 4, a module cover plate 5, a module lead-out copper bus 6, and an external copper bus 7. The power lead-out fastening structure is connected to the module end plate 1 2.

[0049] The power lead-out fastening structure includes a fastening base 11 and a fastening cover 12. The fastening base 11 includes a base body 111 surrounded by a rectangle with three sides, a lead-out copper bar bracket 112 is provided on the base body 111, and a positioning portion 1121 is provided on the lead-out copper bar bracket 112. The fastening cover 12 is a rectangular box-shaped body matching the fastening base 11, and a first breaking portion 1232 for connecting an external copper bar is provided on three sides connected to the base body 111, and a second breaking portion 1221 for connecting the module lead-out copper bar and the external copper bar at the same time is provided on the fourth side. The external copper bar and the module lead-out copper bar can be connected to the lead-out copper bar bracket 112 at the same time through the positioning portion 1121.

[0050] The three sides of the base body outer frame 1112 of the fastening base 11 are all provided with card slots 1111 , and the three sides of the fastening cover 12 corresponding to the fastening base 11 are provided with buckles 1231 , and the card slots 1111 and the buckles 1231 are overlapped.

[0051] The base limiting columns 1115 and the base limiting threaded holes 1114 on the outside of the fastening base 11 are fixed to the module end plate 2, so that the module lead-out copper bar 6 can be replaced and the lead-out fastening structure 1 can be disassembled and maintained.

[0052] The lead-out copper bar bracket 112 is provided with a gasket, which is respectively fitted with the module lead-out copper bar and the lead-out copper bar bracket 112, and can play a supporting and reinforcing role, so that the module lead-out copper bar 6, the fastening base 11, and the external copper bar 7 are in close contact. The positioning portion 1121 provided on the lead-out copper bar bracket 112 is a plurality of fastening threaded holes. The module lead-out copper bar 6 and the external copper bar 7 can be provided with holes corresponding to the fastening threaded holes according to different lead-out requirements to allow bolts to pass through and be fixed with the fastening threaded holes. If there are four fastening threaded holes, they are distributed in a square, and the diagonal of the square is perpendicular or parallel to the edge of the lead-out copper bar bracket 112.

[0053] There is a cavity between the base body outer frame 1112 of the base body 111 and the base body inner frame of the base body 111, which increases the electrical design redundancy and enhances the insulation of the module lead-out terminal.

[0054] The upper end of the copper bar lead-out bracket 112 is provided with a copper bar lead-out port 1122, which plays the functions of leading out, supporting and limiting the module lead-out copper bar 6. The thickness of the copper bar lead-out portion 1122 is greater than the thickness of the copper bar lead-out bracket 112; the copper bar lead-out portion and the module lead-out copper bar are fully and tightly fitted with each other. In addition, the outer frame 1112 of the base body and the copper bar lead-out port 1122 are designed in a stepped manner, and the extended lead-out protection of the top side plate 122 of the fastening cover can achieve a better insulation effect.

[0055] The fastening cover 12 includes a fastening cover end plate 121, a fastening cover top side plate 122, a fastening cover left side plate 123, a fastening cover right side plate 124, and a fastening cover bottom side plate 125. There are buckles 1231 on the left, right and bottom three side plates, which overlap with the fastening base 11 through the slots 1111 of the base body outer frame 1112. A circular groove is provided in the middle of the outer side of the fastening cover end plate 121 for attaching a logo.

[0056] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0057] Finally, it should be noted that the above description is only a preferred example of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-directional power extraction and fastening structure for a battery module, characterized in that: The structure comprises a fastening base (11) and a fastening cover (12) arranged on the fastening base (11); The fastening base (11) comprises a base body (111) surrounded by a rectangle with three sides, and a lead-out copper bar bracket (112) is provided inside the base body (111); a positioning portion (1121) is provided on the lead-out copper bar bracket (112); The fastening cover (12) is in a rectangular box-shaped body matching the fastening base (11), and is provided with first breakout parts (1232) on three sides connected to the base body (111) for connecting with an external copper busbar, and is provided with a second breakout part (1221) on the fourth side for connecting with the module copper busbar and connecting with the external copper busbar at the same time; The external copper busbar and the module lead-out copper busbar can be simultaneously connected to the lead-out copper busbar bracket (112) through the positioning portion (1121).

2. A battery module multi-directional power extraction fastening structure according to claim 1, characterized in that: The positioning portion (1121) is a fastening threaded hole.

3. A battery module multi-directional power extraction fastening structure according to claim 2, characterized in that: There are at least two fastening threaded holes, and holes corresponding to the fastening threaded holes are formed on the external copper busbar and the module lead-out copper busbar.

4. A battery module multi-directional power extraction fastening structure according to claim 3, characterized in that: There are four fastening threaded holes, which are distributed in a square shape, and the diagonal of the square is perpendicular or parallel to the edge of the lead-out copper bar bracket (112).

5. A battery module multi-directional power extraction fastening structure according to claim 1, characterized in that: A copper bar lead-out portion (1122) is provided at one end corresponding to the fourth side surface of the copper bar lead-out bracket (112). The thickness of the copper bar lead-out portion (1122) is greater than the thickness of the copper bar lead-out bracket (112); the copper bar lead-out portion is partially fitted with the module copper bar lead-out portion.

6. A battery module multi-directional power extraction fastening structure according to claim 1, characterized in that: The lead-out copper bar bracket (112) is provided with a gasket, and the gasket is respectively fitted with the module lead-out copper bar and the lead-out copper bar bracket (112).

7. A battery module multi-directional power extraction fastening structure according to claim 1, characterized in that: The base body (111) is a frame.

8. A battery module multi-directional power extraction fastening structure according to claim 1, characterized in that: The three sides of the fastening base (11) are all provided with clamping grooves (1111), the three sides of the fastening cover (12) corresponding to the fastening base (11) are provided with buckles (1231), and the clamping grooves (1111) and the buckles (1231) are overlapped.

9. A battery module multi-directional power extraction fastening structure according to claim 1, characterized in that: The material of the power lead-out fastening structure is flame-retardant PC.

10. A battery module, comprising a battery module multi-directional power lead-out fastening structure according to any one of claims 1 to 9, characterized in that: It also includes a module end plate 1, a battery pack, a module end plate 2, a module cover plate, a module lead-out copper busbar, and an external copper busbar; The power lead-out fastening structure is connected to the module end plate.

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