A single battery module

Abstract

The present invention discloses a single battery module, including a shell, a battery body, a tab fixing frame, two bus bars and two connectors. The battery body is fixed inside the shell, the tab fixing frame is arranged inside the shell near the side of the battery body tab, the bus bar is fixed on the tab fixing frame, and the two tabs of the battery body are electrically connected to the two bus bars respectively. The connector includes a connector body and a plurality of information acquisition harnesses, the connector body is fixed on the tab fixing frame, one end of the information acquisition harness is fixed in the connector body, and the other end is fixed on the bus bar. By adding a connector for connecting the information acquisition harness and the BMS system to the battery module, the present invention can directly remove the external acquisition line by plugging and unplugging, which is convenient for installation and maintenance; the connector is fixed on the tab fixing frame, and an additional fixing point is provided, which enhances the connection strength and reduces the risk of falling off, especially in mobile application scenarios such as electric vehicles and electric boats, and improves the system operation stability.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a single battery module. Background Art

[0002] In the battery module, the information collection harness is used to collect and transmit the battery voltage / temperature / balance signals. In the traditional battery module, one end of the information collection harness is directly welded or bolted to the bus, and the other end is connected to the BMS (battery management system). The above structure has the problems of extremely inconvenient installation / disassembly and insufficient connection strength, and poor stability and reliability. Summary of the invention

[0003] In view of the technical problems raised in the background technology, an object of the present invention is to provide a single battery module with reliable connection and good stability.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A single battery module comprises a shell, a battery body, a tab fixing frame, two busbars and two connectors. The battery body is fixed inside the shell, the tab fixing frame is arranged on the tab side of the battery body inside the shell, the busbar is fixed on the tab fixing frame, and the two tabs of the battery body are electrically connected to the two busbars respectively. The connector comprises a connector body and a plurality of information collection harnesses, the connector body is fixed on the tab fixing frame, one end of the information collection harness is fixed inside the connector body, and the other end is fixed on the busbar.

[0006] Furthermore, the information collection harness includes a voltage collection harness, a temperature collection harness and a balance collection harness.

[0007] Preferably, the tabs of the battery body are fixed to the upper surface of the busbar by laser welding or ultrasonic welding.

[0008] Preferably, the information collection harness is fixed on the bus by laser welding, hot melt adhesive bonding or ultrasonic welding.

[0009] Furthermore, in order to better fix the connector, a fixing buckle for fixing the connector is respectively provided on the left and right sides of the front wall of the tab fixing frame.

[0010] Furthermore, in order to further improve the installation structural strength of the shell, the upper and lower sides of the middle position of the pole ear fixing frame are respectively recessed inward to form two grooves, and the shell is bent at positions corresponding to the grooves to form a convex bump for inserting into the grooves, and the outer side of the shell is provided with a U-shaped fixing ear for locking the pole ear fixing frame and the shell together.

[0011] Furthermore, the tab fixing frame comprises two tab supports which are symmetrically arranged on both sides, and the top and the bottom of the tab supports are respectively provided with limiting steps for abutting against the edge of the shell at the end away from the tab.

[0012] Furthermore, a fixing ear for fixing the battery module on the battery cabinet is respectively installed on the left and right sides of the front end of the shell.

[0013] Furthermore, the housing comprises an upper housing and a lower housing which are buckled together.

[0014] Among them, in order to better achieve the mutual fixation of the upper and lower shells, a plurality of first buckles and first protrusions are arranged at the edge of the upper shell, and the first buckles and first protrusions are arranged alternately in sequence, and a plurality of second protrusions and second buckles are provided at corresponding positions on the edge of the lower shell, which are used to snap into the first buckles and the first protrusions respectively.

[0015] Among them, the lower shell is bent upward on the side away from the pole ear to form a first groove, and a plurality of first protrusions are provided on the bottom surface of the first groove. The upper shell is bent downward at a position opposite to the first groove to form a second groove, and a plurality of second protrusions corresponding to the first protrusions are provided on the bottom surface of the second groove. The upper surface of the first protrusion and the lower surface of the second protrusion are fitted together, and rivet holes are respectively opened at the relative positions of the first protrusion and the second protrusion.

[0016] Preferably, in order to further improve the structural strength and the seismic and impact resistance of the module, reinforcing ribs are respectively provided on the upper surface and the lower surface of the shell.

[0017] Preferably, the connector is an IL-AG9-3P-S3C1 plug-in connector.

[0018] The present invention has the following beneficial effects:

[0019] 1. By adding a connector to the battery module for connecting the information collection harness and the BMS system, the external collection line can be directly removed by plugging and unplugging, which is convenient for installation and maintenance; the connector is fixed on the tab fixing frame, with an additional fixing point, which enhances the connection strength and reduces the risk of falling off, especially in mobile application scenarios such as electric vehicles and electric boats, improving the system operation stability;

[0020] 2. The information collection harness is fixed on the bus by laser welding, hot melt adhesive bonding or ultrasonic welding, which can significantly enhance the fixed connection strength between the information collection harness and the battery bus, and effectively prevent the battery information collection harness from falling off the bus;

[0021] 3. The upper and lower shells are fixedly connected to each other through a snap-fit ​​structure, which can effectively limit the vertical displacement of the internal battery body, reduce the risk of dislocation and falling off of the upper and lower shells, and improve the product's mechanical stability;

[0022] 4. Reinforcement ribs are provided on the upper and lower surfaces of the shell, a first protrusion is provided on the top of the lower shell, and a second protrusion is provided on the bottom of the upper shell. The first protrusion and the second protrusion fit each other, which increases the overall structural strength of the module, reduces the deformation of the module in the vertical direction, improves the seismic and shock resistance, and improves the system operation stability; BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 for Figure 1 Exploded view of parts.

[0025] Figure 3 for Figure 1 A partial enlarged schematic diagram of part A.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure from another angle of the present invention.

[0027] Figure 5 for Figure 4 A partial enlarged schematic diagram of part B.

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the pole ear bracket.

[0029] Explanation of the main component symbols: 1. Shell; 10. Reinforcement rib; 101. Bump; 102. First groove; 103. First protrusion; 104. Second groove; 105. Second protrusion; 106. Riveting hole; 11. Upper shell; 111. First buckle; 112. First buckle; 12. Lower shell; 121. Second buckle; 122. Second buckle; 2. Battery body; 20. Tab; 3. Tab fixing frame; 30. Fixing buckle; 301. Groove; 31. Tab bracket; 310. Limiting step; 4. Bus; 5. Connector; 51. Connector body; 52. Information collection harness; 6. U-shaped fixing ear; 7. Fixing ear. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figure 1-6 As shown, a single battery module includes a shell 1, a battery body 2, a tab fixing frame 3, two busbars 4 and two connectors 5. The battery body 2 is fixed inside the shell 1, the tab fixing frame 3 is arranged on the side of the tab 20 of the battery body 2 inside the shell 1, the busbar 4 is fixed on the tab fixing frame 3, and the two tabs 20 of the battery body 2 are electrically connected to the two busbars 4 respectively. Preferably, the tab 20 is fixed on the upper surface of the busbar 4 by laser welding or ultrasonic welding. The connector 5 includes a connector body 51 and a plurality of information acquisition harnesses 52. Preferably, the connector 5 is an IL-AG9-3P-S3C1 plug-in connector. The information acquisition harness 52 includes a voltage acquisition harness, a temperature acquisition harness and a balanced acquisition harness. The connector body 51 is fixed on the tab fixing frame 3, one end of the information acquisition harness 52 is fixed in the connector body 51, and the other end is fixed on the busbar 4. Preferably, the information collection harness 52 is fixed to the bus 4 by laser welding, hot melt adhesive bonding or ultrasonic welding.

[0032] A fixing buckle 30 for fixing the connector 5 is provided on the left and right sides of the front wall of the tab fixing frame 3. The upper and lower sides of the middle position of the tab fixing frame 3 are respectively recessed inward to form two grooves 301, and the housing 1 is bent at the position corresponding to the groove 301 to form a convex bump 101 for snapping into the groove 301, and the outer side of the housing 1 is provided with a U-shaped fixing ear 6 for locking the tab fixing frame 3 and the housing 1 together. The tab fixing frame 3 includes two tab brackets 31 symmetrically arranged on the left and right, and the top and bottom of the tab bracket 31 are respectively provided with a limiting step 310 for abutting against the edge of the housing 1 at the end away from the tab 20.

[0033] A fixing ear 7 for fixing the battery module on the battery cabinet is installed on the left and right sides of the front end of the housing 1. Preferably, reinforcing ribs 10 are respectively provided on the upper surface and the lower surface of the housing 1.

[0034] The housing 1 includes an upper shell 11 and a lower shell 12 that are buckled together. A plurality of first buckles 111 and first buckle convexities 112 are provided at the edge of the upper shell 11, and the first buckles 111 and the first buckle convexities 112 are alternately arranged in sequence. A plurality of second buckle convexities 121 and second buckle 122 are provided at corresponding positions on the edge of the lower shell 12 for buckling with the first buckle 111 and the first buckle convexity 112, respectively. The lower shell 12 is bent upward on the side away from the pole ear 20 to form a first groove 102, and a plurality of first protrusions 103 are provided on the bottom surface of the first groove 102. The upper shell 11 is bent downward at a position opposite to the first groove 102 to form a second groove 104, and a plurality of second protrusions 105 corresponding to the first protrusions 103 are provided on the bottom surface of the second groove 104. The upper surface of the first protrusion 103 and the lower surface of the second protrusion 105 are in contact with each other, and rivet holes 106 are respectively opened at the relative positions of the first protrusion 103 and the second protrusion 105.

[0035] In the above structure of the present invention, by adding a connector 5 for connecting the information collection harness 52 and the BMS system to the battery module, the external collection line can be directly removed by plugging and unplugging, which is convenient for installation and maintenance; the connector 5 is fixed on the pole ear fixing frame 3, and an additional fixing point is provided, which enhances the connection strength and reduces the risk of falling off, especially in mobile application scenarios such as electric vehicles and electric boats, thereby improving the system operation stability. The information collection harness 52 is fixed to the bus 4 by laser welding, hot melt adhesive bonding or ultrasonic welding, which can significantly enhance the fixed connection strength between the information collection harness 52 and the battery bus 4, and can effectively prevent the battery information collection harness 52 from falling off the bus 4.

[0036] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A single battery module, characterized in that: It includes a shell, a battery body, a tab fixing frame, two bus bars and two connectors, the battery body is fixed inside the shell, the tab fixing frame is arranged on the tab side of the shell close to the battery body, the bus bar is fixed on the tab fixing frame, the two tabs of the battery body are electrically connected to the two bus bars respectively, the connector includes a connector body and a plurality of information collection harnesses, the connector body is fixed on the tab fixing frame, one end of the information collection harness is fixed in the connector body by plugging and unplugging, and the other end is fixed on the bus bar.

2. A single battery module according to claim 1, characterized in that: The information collection harness includes a voltage collection harness, a temperature collection harness and a balance collection harness.

3. A single battery module according to claim 1, characterized in that: The tabs of the battery body are fixed to the upper surface of the busbar by laser welding or ultrasonic welding.

4. A single battery module as claimed in claim 1, characterized in that: The information collection harness is fixed on the bus by laser welding, hot melt adhesive bonding or ultrasonic welding.

5. A single battery module as claimed in claim 1, characterized in that: A fixing buckle for fixing the connector is respectively provided on the left and right sides of the front wall of the tab fixing frame.

6. A single battery module as claimed in claim 1, characterized in that: The upper and lower sides of the middle position of the pole tab fixing frame are respectively recessed inward to form two grooves, and the shell is bent at positions corresponding to the grooves to form a convex bump for being inserted into the grooves. The outer side of the shell is provided with a U-shaped fixing ear for locking the pole tab fixing frame and the shell together.

7. A single battery module according to claim 1, characterized in that: The pole tab fixing frame comprises two pole tab brackets which are arranged symmetrically on the left and right sides. The top and the bottom of the pole tab bracket are respectively provided with limiting steps for abutting against the edge of the shell at the end away from the pole tab.

8. A single battery module as claimed in claim 1, characterized in that: A fixing ear for fixing the battery module on the battery cabinet is respectively installed on the left and right sides of the front end of the shell.

9. A single battery module as claimed in claim 1, characterized in that: The shell comprises an upper shell and a lower shell which are buckled together.

10. A single battery module according to claim 9, characterized in that: A plurality of first buckles and first protrusions are arranged at the edge of the upper shell, and the first buckles and first protrusions are arranged alternately in sequence. A plurality of second protrusions and second buckles are arranged at corresponding positions on the edge of the lower shell, which are used to be respectively engaged with the first buckles and the first protrusions.

11. A single battery module according to claim 9, characterized in that: The lower shell is bent upward on a side away from the pole ear to form a first groove, and a plurality of first protrusions are provided on the bottom surface of the first groove. The upper shell is bent downward at a position opposite to the first groove to form a second groove, and a plurality of second protrusions corresponding to the first protrusions are provided on the bottom surface of the second groove. The upper surface of the first protrusion is fitted with the lower surface of the second protrusion, and rivet holes are respectively opened at positions opposite to the first protrusion and the second protrusion.

12. A single battery module according to any one of claims 1 to 11, characterized in that: The upper surface and the lower surface of the shell are respectively provided with reinforcing ribs.

13. A single battery module according to any one of claims 1 to 11, characterized in that: The connector is an IL-AG9-3P-S3C1 plug-in connector.

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