Battery pack capable of being repaired without disassembly

Abstract

The utility model relates to the technical field of battery packs, in particular to a battery pack capable of being repaired without disassembly. Comprising a battery box body and an upper cover plate, the upper cover plate is detachably mounted at the top of the battery box, a containing space is formed in the battery box, a battery pack is mounted in the containing space through a mounting piece, the battery pack comprises a plurality of single batteries, and the single batteries are connected in series through a plurality of connecting pieces; one side wall of the battery box is provided with a battery pack repair interface and a single-string battery repair interface; according to the utility model, through the arrangement of the battery pack repair interface and the single-string battery repair interface, the activation repair and passive equalization repair work of the battery pack can be completed under the condition that the battery pack is not disassembled, great convenience is provided for technicians, the repair time of the battery pack is reduced, and the working efficiency is improved; and the battery pack repair interface is connected in parallel with the relay and the voltage conversion module, and does not output voltage when activation and repair operations are not carried out, thereby ensuring safety.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack that can be repaired without disassembly. Background Art

[0002] At present, battery technology is widely used in various fields, especially in the field of transportation such as electric vehicles.

[0003] As the batteries in the battery pack are used for longer, some of the batteries in the battery pack will experience capacity decay, that is, the voltage becomes lower. If the voltage difference is not large, the BMS can automatically balance it back. If the voltage difference is large, it cannot be automatically balanced by the BMS. At this time, a balancer is needed for passive repair. Currently, when using a balancer for passive repair, the battery pack needs to be disassembled, and then the balancer is connected to the connecting piece and the total positive and negative electrodes of the battery series in the battery pack to repair the battery that needs to be repaired; if the battery is idle for too long, it will cause the battery to "starve to death", and the entire battery pack needs to be charged through the balancer. When charging the entire battery pack, the battery pack also needs to be disassembled and connected to the balancer. Such cumbersome operations bring trouble to technicians. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a disassembly-free repairable battery pack which can complete charging or passive equalization of the battery pack without disassembly.

[0005] To achieve the above technical objectives, the utility model proposes the following technical solutions: a battery pack that can be repaired without disassembly, comprising a battery box and an upper cover, the upper cover being detachably mounted on the top of the battery box, the battery box having a accommodating space, a battery pack being mounted in the accommodating space via a mounting member, the battery pack comprising a plurality of battery cells, a plurality of the battery cells being connected in series via a plurality of connecting plates, a battery pack repair interface and a single-string battery repair interface being provided on one side wall of the battery box, a relay and a voltage conversion module being provided in the accommodating space, the battery pack being connected in series with the battery pack repair interface and the relay, the battery pack repair interface being connected in parallel with the voltage conversion module, a plurality of terminal posts being provided on the single-string battery repair interface, the plurality of terminal posts being respectively connected to the total positive and negative poles of the battery pack and a plurality of connecting plates.

[0006] Furthermore, the mounting member includes an upper connecting member and a lower connecting member, which are mirror-symmetrically arranged at the upper and lower ends of the battery pack. The upper connecting member and the lower connecting member each include two groups of brackets, and the brackets are evenly divided into limiting grooves for several battery cells by multiple limiting plates.

[0007] Furthermore, a plurality of slide blocks are provided on one side of the upper connecting member and the lower connecting member away from the battery pack repair interface and on two adjacent sides, and a slide groove adapted to the slide blocks is provided on the inner wall of the battery box.

[0008] Furthermore, a water cooling plate is provided between the upper connecting member and the lower connecting member, and a limiting hole is provided between each group of the brackets, and the upper and lower ends of the water cooling plate are both arranged in the limiting holes.

[0009] Furthermore, both left and right ends of the water cooling plate are stuck in the installation gap between the upper connecting piece and the lower connecting piece.

[0010] Furthermore, a limiting block adapted to the slide groove is fixedly connected to the bottom of the cover plate.

[0011] Compared with the prior art, the beneficial effects produced by the utility model are: the utility model has a novel structure, ingenious conception, simple and convenient operation, and has the following advantages compared with the prior art: the utility model can complete the charging and passive balancing of the battery pack without disassembling the battery pack by setting a battery pack repair interface and a single-string battery repair interface, which provides great convenience to technicians, reduces the repair time of the battery pack, and improves work efficiency; the battery unit is limited by the upper connecting member and the lower connecting member, while ensuring that there is a certain gap between the two adjacent battery units, and cooperates with the water cooling plate to improve the heat dissipation effect; the stability of the battery pack in the battery box is improved by the cooperation of the slide groove and the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the battery box of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the battery pack repair connection of the utility model;

[0015] Figure 4 It is a structural schematic diagram of a battery pack of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the water cooling plate of the utility model.

[0017] In the figure, 1. battery box; 2. cover plate; 3. accommodating space; 4. battery unit; 5. connecting plate; 6. battery pack repair interface; 7. single string battery repair interface; 8. relay; 9. voltage conversion module; 10. terminal; 11. upper connecting piece; 12. lower connecting piece; 13. bracket; 14. limit plate; 15. limit groove; 16. slider; 17. slide groove; 18. limit block; 19. water cooling plate; 20. limit hole. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0019] like Figure 1-5 As shown, the utility model provides a battery pack that can be repaired without disassembly, including a battery box 1 and an upper cover 2, the upper cover 2 can be detachably installed on the top of the battery box 1, the battery box 1 has a accommodating space 3, a battery pack is installed in the accommodating space 3 through a mounting piece, the battery pack includes a plurality of battery cells 4, and the plurality of battery cells 4 are connected in series through a plurality of connecting pieces 5, a battery pack repair interface 6 and a single-string battery repair interface 7 are provided on one side wall of the battery box 1, a relay 8 and a voltage conversion module 9 are provided in the accommodating space 3, the battery pack is connected in series with the battery pack repair interface 6 and the relay 8, the battery pack repair interface 6 and the relay 8 are connected in series, the battery pack repair interface 6 and the voltage conversion module 9 are connected in parallel, and a plurality of terminal posts 10 are provided on the single-string battery repair interface 7, one end of the plurality of terminal posts 10 are respectively connected to the total positive and negative poles of the battery pack and the plurality of connecting pieces 5 through wires.

[0020] like Figure 1-3 As shown, the upper cover 2 and the battery box 1 can be fixed by bolts, which can be easily disassembled later; since the battery pack is composed of multiple unit batteries connected in series, the voltage at the battery pack repair interface 6 is relatively large, and the voltage conversion module 9 is used to reduce the voltage at the battery pack repair interface 6. If a short circuit or accidental touch occurs, no danger will occur. If the battery is idle for too long, it will cause the battery to be "starved to death", and the battery pack in the entire battery pack needs to be charged by the equalizer. In this embodiment, there is no need to disassemble the battery pack. The battery pack can be charged by connecting the equalizer to the battery pack repair port 6; if the voltage difference of some batteries in the battery pack is too large, it is necessary to passively adjust the equalizer by connecting the connector of the equalizer to the other end of multiple terminals 10 respectively. In this embodiment, the passive balancing of the battery does not require the removal of the battery pack, which provides great convenience for the maintenance work of the technicians.

[0021] The mounting member includes an upper connecting member 11 and a lower connecting member 12, which are mirror-symmetrically arranged at the upper and lower ends of the battery pack. The upper connecting member 11 and the lower connecting member 12 each include two groups of brackets 13, and the brackets 13 are evenly divided into limiting grooves 15 for a plurality of battery cells 4 by a plurality of limiting plates 14.

[0022] like Figure 2As shown, in this embodiment, two battery packs are installed, and the two battery packs are connected in series. One battery pack is installed on each bracket 13, and the battery packs are fixed between the upper connecting member 11 and the lower connecting member 12. The upper and lower ends of the battery unit 4 are both limited in the limiting groove 15. The battery unit 4 is limited in the limiting groove 15 to ensure that there is no displacement when the battery vibrates. The limiting plate 14 increases the distance between adjacent battery units 4, which is beneficial to the dissipation of heat.

[0023] A plurality of sliders 16 are provided on one side of the upper connecting member 11 and the lower connecting member 12 away from the battery pack repair interface 6 and on two adjacent sides, and a slide groove 17 matched with the sliders 16 is provided on the inner wall of the battery box 1 .

[0024] like Figure 1 As shown, the cooperation between the slider 16 and the slide groove 17 can prevent the entire battery pack from sliding in the front-back and left-right directions in the battery box 1, so as to limit the position of the battery pack and improve the stability of the battery pack installation.

[0025] A limiting block 18 adapted to the slide groove 17 is fixedly connected to the bottom of the cover plate 2 .

[0026] like Figure 1 As shown, in this embodiment, after installation, the slide groove 17 on the upper connecting member 11 reserves a gap to accommodate the limit block 18. When the cover plate 2 is covered on the battery box 1, the limit block 18 controls the battery pack to move up and down, further improving the temperature resistance of the battery pack installation.

[0027] A water cooling plate 19 is disposed between the upper connecting member 11 and the lower connecting member 12 , and a limiting hole 20 is provided between each group of the brackets 13 , and the upper and lower ends of the water cooling plate 19 are disposed in the limiting hole 20 .

[0028] like Figure 4 and 5 As shown, the water cooling plate 19 is limited between the upper connecting member 11 and the lower connecting member 12 to improve the stability of the installation of the water cooling plate 19. At the same time, the water cooling plate 19 cools down the battery unit 4 to ensure the normal operation of the battery unit 4.

[0029] The left and right ends of the water cooling plate 19 are both stuck in the installation gap between the upper connecting piece 11 and the lower connecting piece 12 .

[0030] like Figure 4 and 5 As shown, in this embodiment, the water cooling plate 19 is shaped like an "airplane" as a whole, and the two ends of the water cooling plate 19 are respectively clamped between the upper connecting member 11 and the lower connecting member 12. The side of the water cooling plate 19 close to the relay 8 can cool the relay 8 and the voltage converter 9, thereby improving the service life of the relay 8 and the voltage converter 9.

[0031] Principle of use: During installation, place the battery cells 4 one by one in the limiting grooves 15 on the lower connecting member 12, then install the water cooling plate 19 in the limiting hole 20 of the lower connecting member 12, and then cover the top of the battery pack with the upper connecting member 11, so that the top of the battery cell 4 falls into the limiting groove 15 of the upper connecting member 11, and the top of the water cooling plate 19 falls into the limiting hole 20 of the upper connecting member 11. After the battery cells 4 are fixed, the entire battery pack is placed in the battery box 1, so that the slider 16 slides into the battery box 1 along the slide groove 17, and the entire battery pack is limited. Then, the positive and negative electrodes of two adjacent battery cells 4 are connected together through the connecting piece 5, and finally the upper cover is covered, so that the limiting block at the bottom of the upper cover 2 falls into the slide groove 17, and fixed by bolts;

[0032] If the battery has been idle for too long, the battery pack can be charged by connecting the connector of the equalizer to the battery pack repair port 6; if the pressure difference of some batteries in the battery pack is too large, the equalizer needs to be passively adjusted by connecting the connector of the equalizer to multiple terminals 10 respectively to complete the passive balancing of the battery cells 4.

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A battery pack that can be repaired without disassembly, characterized in that: The battery box (1) comprises a battery box (1) and an upper cover plate (2), wherein the upper cover plate (2) is detachably mounted on the top of the battery box (1), the battery box (1) comprises a storage space (3), a battery pack is mounted in the storage space (3) via a mounting member, the battery pack comprises a plurality of battery cells (4), the plurality of battery cells (4) are connected in series via a plurality of connecting plates (5), a battery pack repair interface (6) and a single-string battery repair interface (7) are provided on a side wall of the battery box (1), a relay (8) and a voltage conversion module (9) are provided in the storage space (3), the battery pack is connected in series with the battery pack repair interface (6) and the relay (8), the battery pack repair interface (6) is connected in parallel with the voltage conversion module (9), a plurality of terminal posts (10) are provided on the single-string battery repair interface (7), and the plurality of terminal posts (10) are respectively connected to the total positive and negative electrodes of the battery pack and the plurality of connecting plates (5).

2. The non-disassembly repairable battery pack according to claim 1, characterized in that: The mounting member comprises an upper connecting member (11) and a lower connecting member (12), the upper connecting member (11) and the lower connecting member (12) being arranged at the upper and lower ends of the battery pack in a mirror-symmetrical manner, the upper connecting member (11) and the lower connecting member (12) each comprising two groups of brackets (13), the brackets (13) being evenly divided into a plurality of limiting grooves (15) of the battery cells (4) by a plurality of limiting plates (14) on the brackets (13).

3. The non-disassembly repairable battery pack according to claim 2, characterized in that: A plurality of sliders (16) are provided on one side of the upper connecting member (11) and the lower connecting member (12) away from the battery pack repair interface (6) and on two adjacent sides, and a slide groove (17) adapted to the sliders (16) is provided on the inner wall of the battery box (1).

4. The non-disassembly repairable battery pack according to claim 3, characterized in that: A limiting block (18) adapted to the slide groove (17) is fixedly connected to the bottom of the cover plate (2).

5. The non-disassembly repairable battery pack according to claim 2, characterized in that: A water cooling plate (19) is provided between the upper connecting member (11) and the lower connecting member (12), a limiting hole (20) is provided between each group of brackets (13), and the upper and lower ends of the water cooling plate (19) are both arranged in the limiting hole (20).

6. The non-disassembly repairable battery pack according to claim 5, characterized in that: The left and right ends of the water cooling plate (19) are both stuck in the installation gap between the upper connecting piece (11) and the lower connecting piece (12).

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