Front cover module for battery pack and battery pack

Abstract

The battery pack comprises a front cover, a first connecting piece and a second connecting piece, the front cover is made of plastic, the front cover is arranged on an opening in the front end of a battery pack box body in a covering mode, a first mounting hole and a second mounting hole are further formed in the front cover, and the first connecting piece and the second connecting piece are arranged in the first mounting hole and the second mounting hole respectively. One end of the first connecting piece is electrically connected with a positive electrode connecting piece of a battery module in the battery pack, the other end of the first connecting piece extends out of the front cover from the first mounting hole, one end of the second connecting piece is electrically connected with a negative electrode connecting piece of the battery module in the battery pack, and the other end of the second connecting piece extends out of the front cover from the second mounting hole. According to the front cover module, a metal connecting piece can be adopted to replace a traditional wiring terminal, and complicated wire connection is not needed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery pack, concretely relates to a front cover module for battery pack and battery pack. BACKGROUND

[0002] The wiring terminal of the battery pack is the key component for ensuring the safe and reliable connection of the battery and the external circuit. In the prior art, the front cover of the battery pack is a sheet metal part (metal), and the wiring terminal is arranged on the front cover of the battery pack. The existing wiring terminal is a standardized and modular structure, including an external insulating layer (for insulation with the front cover) and a circuit arranged inside the insulating layer. The positive and negative poles of the battery module inside the battery pack, the circuit board inside the battery pack and the wiring terminal need to be electrically connected with each other. However, with the traditional wiring terminal, the three can only be connected by wires, which will result in a large number of wires inside the battery pack and difficult arrangement.

[0003] In addition, when the wiring terminal fails, the multiple wires inside the battery pack need to be disassembled for maintenance, which increases the difficulty of the battery pack maintenance. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems existing in the prior art, provides a front cover module for battery pack and battery pack, the front cover module can adopt a metal connecting piece instead of a traditional wiring terminal, and complicated wire connection is not needed.

[0005] In order to solve the above problems, the utility model adopts the following technical scheme:

[0006] A front cover module for battery pack, comprising a front cover, a first connecting piece and a second connecting piece, the material of the front cover is plastic, the front cover is arranged on the front end opening of the battery pack box body, the front cover is further provided with a first mounting hole and a second mounting hole, one end of the first connecting piece is electrically connected with the positive pole connecting piece of the battery module inside the battery pack, the other end of the first connecting piece extends out of the first mounting hole to the outside of the front cover, one end of the second connecting piece is electrically connected with the negative pole connecting piece of the battery module inside the battery pack, and the other end of the second connecting piece extends out of the second mounting hole to the outside of the front cover.

[0007] Preferably, the first connecting piece and the second connecting piece are both copper bars.

[0008] Preferably, the first connecting piece and the second connecting piece are both stepped structures.

[0009] Preferably, the front cover module further comprises a circuit board, the first connecting piece and the second connecting piece each comprise a plurality of vertical segments and a plurality of horizontal segments, one end of the first connecting piece close to the circuit board is a first horizontal segment, one end of the first connecting piece extending outside the front cover is a first vertical segment, one end of the second connecting piece close to the circuit board is a second horizontal segment, one end of the first connecting piece extending outside the front cover is a second vertical segment, one side of the first horizontal segment is in contact with a positive electrode connecting piece of the battery module, and the other side is in contact with a terminal seat on the circuit board, so as to be connected with the circuit board, the second horizontal segment is in contact with the terminal seat on the circuit board, so as to be connected with the circuit board, a negative electrode connecting piece of the battery module is in contact with the terminal seat on the circuit board, so as to be connected with the circuit board, the first vertical segment extends from the first mounting hole to outside the front cover, and the second vertical segment extends from the second mounting hole to outside the front cover.

[0010] Preferably, the front cover module further comprises a bolt assembly, the bolt assembly comprises a bolt and a nut, bolt holes are arranged on the first vertical segment and the second vertical segment, a first mounting groove and a second mounting groove are arranged on the outer surface of the front cover, the nut is clamped in the first mounting groove and the second mounting groove, and the bolt is in threaded connection with the nut after penetrating through the bolt holes on the first vertical segment and the second vertical segment.

[0011] Preferably, the front cover module further comprises a protection assembly, the protection assembly comprises a baffle arranged on both sides of the first vertical segment and both sides of the second vertical segment.

[0012] Preferably, the protection assembly further comprises a cover plate, the cover plate is a semi-enclosing structure, and a first clamping part is arranged on the cover plate, a second clamping part is arranged on the baffle, and the cover plate is buckled on the baffle through cooperation of the first clamping part and the second clamping part.

[0013] Preferably, the first mounting hole and the second mounting hole are wider than the first connecting piece and the second connecting piece in width respectively.

[0014] Preferably, the height of the first mounting hole is capable of smoothly passing the bending part of the first connecting piece, and the height of the second mounting hole is capable of smoothly passing the bending part of the second connecting piece.

[0015] The utility model also provides a battery pack, including box body, battery module, still include above-mentioned front cover module, one end of box body is open, the front cover module covers is equipped in the open place of box body, the battery module is installed in the inside of box body.

[0016] The front cover of the front cover module for the battery pack is made of a plastic part, so that the traditional wiring terminal can be avoided, so that the copper bar is directly used to connect the positive and negative poles of the battery module to the outside of the front cover, the integration of the battery pack is effectively improved, and the wire arrangement problem in the battery pack is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic view of the overall structure of the front cover module in the embodiment 1 of the utility model;

[0018] Figure 2 is a schematic view of the local structure of the front cover module in the embodiment 1 of the utility model;

[0019] Figure 3 is Figure 2 the local enlarged view of A in

[0020] Figure 4 is a schematic view of the structure of the front cover in the embodiment 1 of the utility model;

[0021] Figure 5 is a schematic view of the structure of the cover plate in the embodiment 1 of the utility model;

[0022] Figure 6 is a sectional view of the front cover module in the embodiment 1 of the utility model;

[0023] Figure 7 is a schematic view of the overall structure of the battery pack in the embodiment 2 of the utility model;

[0024] Figure 8 is a schematic view of the internal structure of the battery pack in the embodiment 2 of the utility model.

[0025] In the drawing: 100-front cover, 110-first mounting hole, 120-second mounting hole, 130-first mounting slot, 140-second mounting slot, 150-baffle, 151-second clamping part, 160-cover plate, 161-first clamping part, 200-first connecting piece, 210-first horizontal section, 220-first vertical section, 300-second connecting piece, 310-second horizontal section, 320-second vertical section, 400-battery module, 410-positive pole connecting sheet, 420-negative pole connecting sheet, 500-circuit board, 510-terminal seat, 600-bolt, 610-nut. DETAILED DESCRIPTION

[0026] With reference to the accompanying drawings, the technical solutions in the utility model will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the utility model.

[0027] In the description of the utility model, it should be explained that the terms such as 'upper' indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the indicated device or element must be provided with a particular orientation, constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] In the description of the utility model, the terms 'first','second' are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms 'connection','setting', 'installation', 'fixing' and the like should be understood broadly, for example, can be fixedly connected or can be detachably connected, or integrally connected, can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] The utility model provides a front cover module for battery pack, including front cover, first connecting piece, second connecting piece, the material of front cover adopts plastic, and the front cover is equipped on the front end opening of battery pack box body, first mounting hole and second mounting hole are further equipped on the front cover, one end of first connecting piece is connected with the positive pole connecting piece of battery module in the battery pack and is connected with the negative pole connecting piece of battery module in the battery pack, and the other end of second connecting piece is connected with the other end of second connecting piece and is connected with the other end of second connecting piece.

[0031] The utility model also provides a battery pack, including box, battery module, further including above-mentioned front cover module, one end of box is open, the front cover module is equipped at the opening of box, the battery module is installed in the box.

[0032] Embodiment 1

[0033] As Figures 1-6As shown, the embodiment discloses a front cover module for a battery pack, comprising a front cover 100, a first connecting piece 200, and a second connecting piece 300. The material of the front cover 100 is plastic, and the first connecting piece 200 and the second connecting piece 300 are made of conductive material. The front cover 100 is arranged on the front end opening of the battery pack box body. The front cover 100 is further provided with a first mounting hole 110 and a second mounting hole 120. One end of the first connecting piece 200 is electrically connected with the positive electrode connecting piece 410 of the battery module 400 inside the battery pack, and the other end extends out of the first mounting hole 110 to the outside of the front cover 100. One end of the second connecting piece 300 is electrically connected with the negative electrode connecting piece 420 of the battery module 400 inside the battery pack, and the other end extends out of the second mounting hole 120 to the outside of the front cover 100. Since the front cover 100 is made of plastic, the positive and negative electrodes of the battery module 400 can be directly connected with the first connecting piece 200 and the second connecting piece 300, and led out to the outside of the front cover 100. Specifically, the first connecting piece 200 and the second connecting piece 300 are both copper bars.

[0034] As shown, Figure 7 The first connecting piece 200 and the second connecting piece 300 are both stepped structures. The front cover module further comprises a circuit board 500, which is located inside the front cover 100. The first connecting piece 200 and the second connecting piece 300 each comprise a plurality of vertical segments and a plurality of horizontal segments. The end of the first connecting piece 200 close to the circuit board 500 is a first horizontal segment 210, and the end of the first connecting piece 200 extending out of the front cover 100 is a first vertical segment 220. The end of the second connecting piece 300 close to the circuit board 500 is a second horizontal segment 310, and the end of the second connecting piece 300 extending out of the front cover 100 is a second vertical segment 320.

[0035] Further, the top of the first horizontal segment 210 is in contact with the positive electrode connecting piece 410 of the battery module 400, and the bottom is in contact with a terminal seat 510 on the circuit board 500, so as to be connected with the circuit board 500. The first horizontal segment 210, the terminal seat 510, and the positive electrode connecting piece 410 are each provided with a corresponding bolt hole, and the three are fixedly connected by a bolt. This connection mode avoids the disadvantages of traditional wiring terminals connected by wires, and the three are connected at one point, greatly improving the integration of the battery pack and simplifying the connection mode.

[0036] Further, the second horizontal segment 310 is in contact with a terminal seat 510 on the circuit board 500, so as to be connected with the circuit board 500. The negative electrode connecting piece 420 of the battery module 400 is in contact with a terminal seat 510 on the circuit board 500, so as to be connected with the circuit board 500. This connection mode is to ensure that the negative electrode of the battery module 400 first passes through a mos tube on the circuit board 500, and then is connected to the second connecting piece 300.

[0037] Specifically, the first vertical section 220 extends from the first mounting hole 110 to the outside of the front cover 100, and the second vertical section 320 extends from the second mounting hole 120 to the outside of the front cover 100, thereby being used to connect with external circuit.

[0038] As shown in Figure 4 , 7 , the first connecting piece 200 and the second connecting piece 300 each include two horizontal sections and two vertical sections, and the first horizontal section 210 faces upward and the second horizontal section 310 faces downward. Correspondingly, the first mounting hole 110 is arranged at the upper portion of the front cover 100, and the second mounting hole 120 is arranged at the lower portion of the front cover 100. Moreover, the first connecting piece 200 is arranged at a position aligned with the positive electrode connecting tab 410, and the second connecting piece 300 is arranged at a position aligned with the negative electrode connecting tab 420, thereby effectively reducing the length of the first connecting piece 200 and the second connecting piece 300 and further increasing the integration of the battery pack.

[0039] In order to ensure that the first connecting piece 200 and the second connecting piece 300 can smoothly pass through the first mounting hole 110 and the second mounting hole 120 respectively, the width of the first mounting hole 110 and the second mounting hole 120 is respectively wider than the width of the first connecting piece 200 and the second connecting piece 300. Moreover, the first vertical section 220 of the first connecting piece 200 is connected with its adjacent horizontal section through a circular arc chamfer, and the second vertical section 320 of the second connecting piece 300 is connected with its adjacent horizontal section through a circular arc chamfer.

[0040] In the installation, the first connecting piece 200 and the second connecting piece 300 are first matched with the front cover 100. The specific installation method is as follows: the first vertical section 220 is horizontally placed and is inserted into the first mounting hole 110 from inside to outside, when it is inserted to the junction of the first vertical section 220 and its adjacent horizontal section, the first connecting piece 200 is rotated until the first vertical section 220 is in a vertical state. Therefore, in order to ensure that the bending portion of the first connecting piece 200 can smoothly pass through the first mounting hole 110, the height of the first mounting hole 110 should be greater than the radius of the bending portion of the first connecting piece 200. After the front cover 100 is matched with the first connecting piece 200, the first horizontal section 210 is connected with the positive electrode connecting tab 410. The installation method of the second connecting piece 300 is the same as that of the first connecting piece 200.

[0041] As shown in Figure 2 , 4As shown in Figure 6, the front cover module also includes a bolt assembly, which includes a bolt 600 and a nut 610. Bolt holes are provided on both the first vertical section 220 and the second vertical section 320. A first mounting groove 130 and a second mounting groove 140 are provided on the outer surface of the front cover 100. The nut 610 is engaged in the first mounting groove 130 and the second mounting groove 140. After the bolt 600 passes through the bolt holes on the first vertical section 220 and the second vertical section 320, it is threadedly connected to the nut 610.

[0042] Specifically, both the first vertical section 220 and the second vertical section 320 have two bolt holes, and both the first mounting groove 130 and the second mounting groove 140 have two bolt holes. Both the first mounting groove 130 and the second mounting groove 140 include an external nut engaging groove and an internal bolt connecting groove. The nut engaging groove is a regular hexagon, and the nut 610 engages within it. The bolt 600 passes sequentially from the outside through the bolt hole in the first mounting groove 130 or the second mounting groove 140, the nut, and then screws into the bolt connecting groove. The bolt assembly is used for connecting to external electrical wires. When connecting to external electrical wires, simply loosen the bolt, wrap the wire around the bolt, and then tighten the bolt.

[0043] like Figure 1 , 3 As shown in Figures 4 and 5, the front cover module also includes a protective component, which includes baffles 150 disposed on both sides of the first vertical section 220 and both sides of the second vertical section 320, and a cover plate 160 covering the baffles 150. The cover plate 160 has a semi-enclosed structure, and a first snap-fit ​​portion 161 is provided on the cover plate 160, while a second snap-fit ​​portion 151 is provided on the baffle 150. The cover plate 160 is snapped onto the baffle 150 through the cooperation of the first snap-fit ​​portion 161 and the second snap-fit ​​portion 151.

[0044] In this embodiment, the front cover 100 of the front cover module is made of plastic, thus avoiding the use of traditional wiring terminals. Copper busbars are used to directly connect the positive and negative terminals of the battery module 400 to the outside of the front cover 100, effectively improving the integration of the battery pack and avoiding wiring problems inside the battery pack. Furthermore, traditional wiring terminals are expensive, while copper busbars effectively reduce costs. This structure also makes disassembly and maintenance more convenient when the battery pack fails.

[0045] Example 2

[0046] This embodiment discloses a battery pack, including a housing, a battery module 400, and a front cover module as in Embodiment 1. One end of the housing is open, and the front cover module covers the opening of the housing. The battery module 400 is installed inside the housing.

[0047] like Figure 7 , 8As shown, in the embodiment, the battery pack is a cuboid box structure, and the front end is open, and the front cover 100 is arranged on the opening to form a closed box.

[0048] The conventional front cover 100 and the box are made of the same sheet metal material, and the wiring terminal can only use the conventional wiring terminal. In the embodiment, the front cover 100 is replaced by a plastic part, thereby abandoning the conventional wiring terminal, and a copper bar is used to lead the positive and negative poles of the battery module 400 to the outside of the front cover 100, effectively improving the integration of the battery pack, avoiding the wiring arrangement problem inside the battery pack. And reduce the cost, reduce the overall weight of the battery module 400.

[0049] It can be understood that the above embodiments are only exemplary embodiments adopted for illustrating the principles of the present application, but the present application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present application, and these modifications and improvements are also considered within the protection scope of the present application.

Claims

1. A front cover module for a battery pack, characterized in that, The device includes a front cover (100), a first connector (200), and a second connector (300). The front cover (100) is made of plastic and is installed on the front opening of the battery pack housing. The front cover (100) is also provided with a first mounting hole (110) and a second mounting hole (120). One end of the first connector (200) is electrically connected to the positive electrode connecting piece (410) of the battery module (400) inside the battery pack, and the other end extends from the first mounting hole (110) to the outside of the front cover (100). One end of the second connector (300) is electrically connected to the negative electrode connecting piece (420) of the battery module (400) inside the battery pack, and the other end extends from the second mounting hole (120) to the outside of the front cover (100).

2. The front cover module for a battery pack according to claim 1, characterized in that, Both the first connector (200) and the second connector (300) are made of copper busbars.

3. The front cover module for a battery pack according to claim 2, characterized in that, Both the first connector (200) and the second connector (300) have a stepped structure.

4. The front cover module for a battery pack according to claim 3, characterized in that, It also includes a circuit board (500) located inside the front cover (100). Both the first connector (200) and the second connector (300) include multiple vertical segments and multiple horizontal segments. The end of the first connector (200) near the circuit board (500) is a first horizontal segment (210), and the end of the first connector (200) extending outside the front cover (100) is a first vertical segment (220). The end of the second connector (300) near the circuit board (500) is a second horizontal segment (310), and the end of the first connector (200) extending outside the front cover (100) is a second vertical segment (320). The first horizontal segment (210) is connected to the positive terminal connector (410) of the battery module (400) on one side and to the terminal block (510) on the circuit board (500) on the other side, thus connecting to the circuit board (500). The second horizontal segment (310) is connected to the terminal block (510) on the circuit board (500), thus connecting to the circuit board (500). The negative terminal connector (420) of the battery module (400) is connected to the terminal block (510) on the circuit board (500), thus connecting to the circuit board (500). The first vertical segment (220) extends from the first mounting hole (110) to the outside of the front cover (100). The second vertical segment (320) It extends from the second mounting hole (120) to the outside of the front cover (100).

5. The front cover module for a battery pack according to claim 4, characterized in that, It also includes a bolt assembly, which includes a bolt (600) and a nut (610). Bolt holes are provided on the first vertical section (220) and the second vertical section (320). A first mounting groove (130) and a second mounting groove (140) are provided on the outer surface of the front cover (100). The nut (610) is engaged in the first mounting groove (130) and the second mounting groove (140). After the bolt (600) passes through the bolt holes on the first vertical section (220) and the second vertical section (320), it is threadedly connected to the nut (610).

6. The front cover module for a battery pack according to claim 4, characterized in that, It also includes a protection component, the protection component comprising a setting disposed on The first vertical segment (220) Both sides and The second vertical segment (320) Side panels (150).

7. The front cover module for a battery pack according to claim 6, characterized in that, The protective assembly also includes a cover plate (160), which is a semi-enclosed structure. The cover plate (160) is provided with a first snap-fit ​​part (161), and the baffle (150) is provided with a second snap-fit ​​part (151). The cover plate (160) is snapped onto the baffle (150) by the cooperation of the first snap-fit ​​part (161) and the second snap-fit ​​part (151).

8. The front cover module for a battery pack according to claim 3, characterized in that, The widths of the first mounting hole (110) and the second mounting hole (120) are respectively wider than the widths of the first connector (200) and the second connector (300).

9. The front cover module for a battery pack according to claim 3, characterized in that, The height of the first mounting hole (110) allows the bend of the first connector (200) to pass smoothly, and the height of the second mounting hole (120) allows the bend of the second connector (300) to pass smoothly.

10. A battery pack, comprising a housing and a battery module (400), characterized in that, It also includes the front cover module as described in any one of claims 1-9, wherein one end of the housing is open, the front cover module is disposed on the opening of the housing, and the battery module (400) is installed inside the housing.

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