Battery cell circuit breaking unit, battery pack and automobile

Abstract

The utility model provides a battery cell circuit breaking unit, a battery pack and an automobile, and relates to the technical field of automobile accessories. The battery cell circuit breaking unit comprises a base and a cover body, the base is used for being arranged in a frame of a battery pack, and the cover body is used for being clamped with or separated from the base so as to be fixed with or separated from the base; a main positive relay and a first mounting piece, wherein the first mounting piece is used for detachably connecting the main positive relay to the base; and the second mounting piece is used for detachably connecting the main negative relay to the base. According to the battery cell circuit breaking unit, the battery pack and the automobile, the main positive relay and the main negative relay are convenient to maintain and replace.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile accessories, and in particular relates to a battery cell breaker unit, a battery pack and an automobile. BACKGROUND

[0002] A battery pack of an automobile is a component of an electric automobile, and the battery pack can provide required electric energy for the automobile. The battery pack comprises a battery cell breaker unit (BDU), also referred to as a battery energy distribution unit. The battery cell breaker unit is a component on a high-voltage loop of the electric automobile, and controls the power-on and power-off process, the pre-charging process and the charging process of the high-voltage electric loop.

[0003] The battery cell breaker unit of the battery pack in the prior art comprises a box body, a main positive relay and a main negative relay. The main positive relay and the main negative relay are arranged in the box body. The main positive relay is used to connect or disconnect the positive electrode of the power battery. The main negative relay is used to connect or disconnect the negative electrode of the power battery. The box body is arranged in the frame of the battery pack.

[0004] However, when the main positive relay and the main negative relay need to be repaired and replaced, the box body needs to be removed, and the box body needs to be disassembled. Then the main positive relay and the main negative relay are taken out from the box body for repair and replacement. This results in inconvenience in repairing and replacing the main positive relay and the main negative relay. UTILITY MODEL CONTENT

[0005] The application provides a battery cell breaker unit, a battery pack and an automobile, to solve the technical problem of inconvenience in repairing and replacing the main positive relay and the main negative relay in the prior art.

[0006] In a first aspect, the application provides a battery cell breaker unit, comprising:

[0007] a base and a cover, the base is arranged in the frame of the battery pack, and the cover is used to be connected or disconnected with the base to be fixed or unfixed with the base;

[0008] a main positive relay and a first mounting member, the first mounting member is used to detachably connect the main positive relay on the base;

[0009] a main negative relay and a second mounting member, the second mounting member is used to detachably connect the main negative relay on the base.

[0010] In some embodiments, a plurality of first connecting members are arranged on the outer wall of the base along the circumference of the base, and a plurality of second connecting members are arranged on the cover along the circumference of the cover. The first connecting members are used to be moved into or out of the second connecting members to drive the cover to be connected or disconnected with the base.

[0011] In some embodiments, the first mounting member comprises a first mounting plate and a first mounting bolt, the first mounting plate is arranged on opposite sides of the main positive relay, the first mounting bolt is arranged on the first mounting plate, and the first mounting bolt is used for threaded connection with the base.

[0012] In some embodiments, the second mounting member comprises a second mounting plate and a second mounting bolt, the second mounting plate is arranged on opposite sides of the main negative relay, the second mounting bolt is arranged on the second mounting plate, and the second mounting bolt is used for threaded connection with the base.

[0013] In some embodiments, a third mounting member is further included, and the third mounting member is used for detachable connection of the base in the frame.

[0014] In some embodiments, the third mounting member comprises a third mounting plate and a third mounting bolt, the third mounting plate is arranged on opposite sides of the base, the third mounting bolt is arranged on the third mounting plate, and the third mounting bolt is used for threaded connection with the frame.

[0015] In some embodiments, a mounting seat and a pre-charged relay are further included, the mounting seat is arranged on the base, the mounting seat is provided with a mounting groove, and the pre-charged relay is used for clamping or unclamping with the mounting groove to be fixed or unfixed with the mounting seat.

[0016] In some embodiments, a first copper bar, a second copper bar and a fuse are further included, the main positive relay is electrically connected with the first copper bar, the main negative relay is electrically connected with the second copper bar, and the fuse is arranged between the first copper bar and the second copper bar.

[0017] In a second aspect, the application provides a battery pack, comprising a frame and the cell breaking unit arranged in the frame.

[0018] In a third aspect, the application provides an automobile, comprising a vehicle body and the cell breaking unit arranged on the vehicle body.

[0019] The application provides an electric core circuit breaking unit, a battery pack and an automobile. The electric core circuit breaking unit is provided with a base and a cover, and the cover is clamped with the base. When the main positive relay and the main negative relay in the base and the cover need to be repaired and replaced, the cover is directly disengaged from the base, so that the cover can be separated from the base, and the main positive relay and the main negative relay in the base can be removed through the first mounting piece and the second mounting piece, so that the operator does not need to remove the base, thereby facilitating replacement of the main positive relay and the main negative relay. The cover and the base are fixed through clamping, so that the convenience of the operator in disassembling the cover is improved, thereby further facilitating repair and replacement of the main positive relay and the main negative relay. The main positive relay and the main negative relay are mounted through the first mounting piece and the second mounting piece, so that the fixing strength of the main positive relay and the main negative relay in the base is improved, and the main positive relay and the main negative relay are prevented from being separated from the base when the automobile is running. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the specification.

[0021] Figure 1 The structure schematic of the assembled state of the battery circuit breaking unit provided by the embodiment of the application Figure 1

[0022] Figure 2 The structure schematic of the assembled state of the battery circuit breaking unit provided by the embodiment of the application Figure 2

[0023] Figure 3 The enlarged view of A part in Figure 2

[0024] Figure 4 The structure schematic of the battery circuit breaking unit provided by the embodiment of the application

[0025] Figure 5 The enlarged view of B part in Figure 4

[0026] Figure 6 The structure schematic of the first clamping piece and the second clamping piece of the battery circuit breaking unit provided by the embodiment of the application

[0027] Figure 7 The enlarged view of C part in Figure 4

[0028] Explanation of reference signs:

[0029] 100, base; 110, first clamping piece; 111, inclined surface; 120, plate body ​​​​​

[0030] 200, cover; 210, second clamping member;

[0031] 300, main positive relay; 310, first mounting member; 311, first mounting plate;

[0032] 400, main negative relay; 410, second mounting member; 411, second mounting plate;

[0033] 500, third mounting member; 510, third mounting plate; 520, third mounting bolt; 530, reinforcing plate;

[0034] 600, mounting base; 610, mounting groove; 620, strip-shaped hole; 621, clamping rod; 622, fixing block;

[0035] 700, pre-charging relay; 710, pre-charging resistor;

[0036] 800, first copper bar; 810, second copper bar; 820, fuse;

[0037] 900, frame; 910, battery cell group; 920, mounting space; 930, partition plate;

[0038] The specific embodiments of the present application have been shown and described in the above-described drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The same or similar components are denoted by the same or similar reference numerals throughout the drawings and the following description. The embodiments described in the following exemplary embodiments are not representative of all embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] As described in the background, the battery pack cell circuit breaking unit of the related art includes a box body, a main positive relay, and a main negative relay, the main positive relay and the main negative relay are both arranged in the box body, the main positive relay functions to turn on or turn off the positive electrode of the power battery, the main negative relay functions to turn on or turn off the negative electrode of the power battery, and the box body is arranged in the frame of the battery pack.

[0041] However, when the main positive relay and the main negative relay need to be repaired and replaced, due to the small operation space inside the automobile battery pack, the box body needs to be first disassembled, and then the box body is disassembled, otherwise it is not convenient to disassemble the box body inside the automobile battery pack, and when the box body is disassembled, the main positive relay and the main negative relay are taken out from the box body to repair and replace the main positive relay and the main negative relay, which is not convenient for repairing and replacing the main positive relay and the main negative relay.

[0042] In view of the above technical problems, the embodiment of the present application provides an electric core circuit breaking unit, a battery pack and an automobile. When the main positive relay and the main negative relay need to be repaired and replaced, the cover body is disengaged from the base through the first clamping piece and the second clamping piece, so that the cover body can be separated from the base. By removing the first mounting bolt, the first mounting plate drives the main positive relay to be removed, thereby facilitating the repair and replacement of the main positive relay. By removing the second mounting bolt, the second mounting plate can drive the main negative relay to be removed, thereby facilitating the repair and replacement of the main negative relay. The base and the cover body do not need to be removed to disassemble the main positive relay and the main negative relay, thereby facilitating the repair and replacement of the main positive relay and the main negative relay. When the pre-charging relay needs to be repaired and replaced, the pre-charging relay is disengaged from the mounting groove, so that the pre-charging relay is disengaged from the mounting seat, thereby facilitating the repair and replacement of the pre-charging relay, and improving the convenience of repairing and replacing the main positive relay, the main negative relay and the pre-charging relay.

[0043] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0044] In combination Figures 1 to 4 An electric core circuit breaking unit comprises:

[0045] The base 100 is arranged in the frame 900 of the battery pack, and the cover body 200 is used to be clamped or disengaged from the base 100 to be fixed or disengaged from the base 100.

[0046] The main positive relay 300 and the first mounting piece 310 are used to detachably connect the main positive relay 300 to the base 100.

[0047] The main negative relay 400 and the second mounting piece 410 are used to detachably connect the main negative relay 400 to the base 100.

[0048] In the application, by adopting the arrangement of the base 100 and the cover 200, and clamping the cover 200 and the base 100, when the main positive relay 300 and the main negative relay 400 in the base 100 and the cover 200 need to be repaired and replaced, the cover 200 is directly disengaged from the base 100, so that the cover 200 can be separated from the base 100, thereby facilitating the removal of the main positive relay 300 and the main negative relay 400 in the base 100 through the first mounting part 310 and the second mounting part 410, so that the operator does not need to remove the base 100, thereby facilitating the replacement of the main positive relay 300 and the main negative relay 400; by clamping the cover 200 and the base 100, the convenience of the operator in disassembling the cover 200 is improved, thereby further facilitating the repair and replacement of the main positive relay 300 and the main negative relay 400; by adopting the first mounting part 310 and the second mounting part 410 to mount the main positive relay 300 and the main negative relay 400, the fixing strength of the main positive relay 300 and the main negative relay 400 fixed in the base 100 is improved, thereby preventing the main positive relay 300 and the main negative relay 400 from being disengaged from the base 100 when the automobile is running.

[0049] In combination Figure 4 and Figure 5 , a plurality of first clamping parts 110 are arranged on the outer wall of the base 100 along the circumference of the base 100, and a plurality of second clamping parts 210 are arranged on the cover 200 along the circumference of the cover 200, the first clamping part 110 is used to move into or out of the second clamping part 210 to drive the cover 200 to be clamped or disengaged from the base 100.

[0050] In the embodiment, the first clamping part 110 is arranged as a clamping block, and the second clamping part 210 is arranged as a clamping frame, the top wall of the clamping block has an inclined surface 111, the distance between the inclined surface 111 and the outer wall of the base 100 gradually increases from top to bottom, and the bottom wall of the clamping block is arranged perpendicular to the outer wall of the base 100; the clamping frame is arranged in an inverted “U” shape; when the clamping frame moves towards the clamping block, the inclined surface 111 of the clamping block abuts against the clamping frame, the inclined surface 111 of the clamping block can abut against the clamping frame, so that the clamping frame moves towards the direction away from the cover 200, when the clamping frame passes over the clamping block, the clamping frame can abut against the bottom wall of the clamping block, thereby fixing the cover 200 and the base 100; when the cover 200 needs to be separated from the base 100, the cover 200 and the base 100 can be separated by disengaging the clamping frame from the bottom wall of the clamping block; in other embodiments, the positions of the clamping block and the clamping frame can be interchanged, for example, the clamping block is arranged on the cover 200, and the clamping frame is arranged on the base 100.

[0051] In the application, by adopting the setting of the clamping block and the clamping frame, the cover 200 is driven to move towards the base 100, so that the cover 200 drives the clamping frame to move towards the clamping block, when the clamping block moves into the clamping frame, the cover 200 can be fixed with the base 100 through the clamping block and the clamping frame, when the cover 200 moves away from the base 100, the clamping block can move out of the clamping frame, so that the cover 200 is disengaged from the base 100. The setting of the clamping block and the clamping frame has simple structure, and further improves the convenience of disassembling the cover 200 and the base 100.

[0052] In combination Figures 2 to 4 The first mounting member 310 includes a first mounting plate 311 and a first mounting bolt, and the first mounting plate 311 is arranged on the opposite sides of the main positive relay 300, and the first mounting bolt is arranged on the first mounting plate 311 and is used for being screwed with the base 100.

[0053] In the embodiment, the cross section of the main positive relay 300 is rectangular, and the first mounting plate 311 is arranged on two sides of the main positive relay 300, one of which is arranged on one corner of the main positive relay 300, and the other of which is arranged on the other corner of the main positive relay 300; the first mounting plate 311 is arranged integrally with the shell of the main positive relay 300, and the first mounting plate 311 is arranged in an "L" shape.

[0054] In the application, the first mounting plate 311 is arranged on the opposite sides of the main positive relay 300, and the first mounting plate 311 is fixed with the base 100 through the first mounting bolt, so as to further improve the fixing strength of the main positive relay 300 fixed on the base 100, and prevent the main positive relay 300 from being disengaged from the base 100; by adopting the first mounting bolt, the fixing strength between the first mounting plate 311 and the base 100 is improved, and the first mounting bolt is convenient for the operator to disassemble, so as to facilitate the disassembly of the main positive relay 300.

[0055] In combination Figures 2 to 4 The second mounting member 410 includes a second mounting plate 411 and a second mounting bolt, and the second mounting plate 411 is arranged on the opposite sides of the main negative relay 400, and the second mounting bolt is arranged on the second mounting plate 411 and is used for being screwed with the base 100.

[0056] In the embodiment, the main negative relay 400 is rectangular in cross section, and the second mounting plate 411 is provided with two second mounting plates 411, one of which is arranged at one corner of the rectangular main negative relay 400, and the other second mounting plate 411 is arranged at the other corner of the rectangular main negative relay 400; the second mounting plate 411 is arranged integrally with the shell of the main negative relay 400, and the second mounting plate 411 is arranged in an "L" shape.

[0057] In the application, by arranging the second mounting plate 411 on the opposite sides of the main negative relay 400, and fixing the two second mounting plates 411 to the base 100 by the second mounting bolts, the fixing strength of the main negative relay 400 fixed to the base 100 is further improved, and the main negative relay 400 is prevented from being separated from the base 100; by arranging the second mounting bolts, the fixing strength between the second mounting plate 411 and the base 100 is improved, and the second mounting bolts are convenient for the operator to disassemble, so that the main negative relay 400 is convenient for disassembly.

[0058] In combination with Figure 2 and Figure 3 , the cell circuit breaking unit further comprises a third mounting member 500, and the third mounting member 500 is used for detachably connecting the base 100 in the frame 900.

[0059] In the application, by arranging the third mounting member 500, the base 100 can be detachably connected in the frame 900, and when the base 100 needs to be repaired and replaced, the base 100 and the frame 900 are convenient for disassembly, so that the convenience of disassembling the base 100 is improved.

[0060] In combination with Figure 2 and Figure 3 , the third mounting member 500 comprises a third mounting plate 510 and a third mounting bolt 520, and the opposite sides of the base 100 are provided with the third mounting plate 510, and the third mounting bolt 520 is arranged on the two third mounting plates 510, and the third mounting bolt 520 is used for being threadedly connected with the frame 900.

[0061] In the embodiment, the third mounting plate 510 is integrally provided with a reinforcing plate 530 adjacent to the two side edges of the base 100, and the reinforcing plate 530 is triangularly arranged; the base 100 is provided with a plate body 120 at a position opposite to the two third mounting plates 510, and the plate body 120 is arranged in an inverted "U" shape, and the third mounting bolt 520 is threadedly connected with the plate body 120 to fix the base 100 on the base 100.

[0062] In the application, the third mounting plates 510 are arranged on the opposite sides of the base 100, and the third mounting plates 510 on the two sides are fixed to the base 100 through the third mounting bolts 520, so as to further improve the fixing strength of the base 100 fixed to the base 100, and prevent the base 100 from being separated from the base 100; through the arrangement of the third mounting bolts 520, the fixing strength between the third mounting plates 510 and the base 100 is improved, and the third mounting bolts 520 are convenient for the operator to disassemble and assemble, so as to facilitate the disassembly and assembly of the base 100.

[0063] In combination Figure 4 And Figure 7 The cell circuit breaking unit further comprises a mounting seat 600 and a pre-charging relay 700, the mounting seat 600 is arranged on the base 100, the mounting seat 600 is provided with a mounting groove 610, and the pre-charging relay 700 is used for being clamped or disengaged from the mounting groove 610, so as to be fixed or disengaged from the mounting seat 600.

[0064] In the embodiment, the pre-charging relay 700 is provided with two, and the mounting seat 600 is provided with two, the two pre-charging relays 700 correspond to the two mounting seats 600 one by one.

[0065] In the embodiment, the mounting seat 600 is arranged in a rectangular cross section, the mounting groove 610 is arranged in a rectangular cross section, the end of the rectangular mounting groove 610 close to the base 100 is arranged in a closed manner, and the end of the rectangular mounting groove 610 away from the base 100 is arranged in a penetrating manner; the mounting seat 600 is provided with a strip-shaped hole 620 on the opposite sides, the end of the strip-shaped hole 620 close to the bottom wall of the base 100 is arranged in a closed manner, the end of the strip-shaped hole 620 away from the bottom wall of the base 100 is arranged in a penetrating manner, a clamping rod 621 is arranged in the strip-shaped hole 620, one end of the clamping rod 621 is connected to the bottom wall of the strip-shaped hole 620, the other end of the clamping rod 621 extends out of the strip-shaped hole 620, and a fixing block 622 is arranged on the opposite surfaces of the two clamping rods 621 and located at the end away from the base 100.

[0066] When the pre-charging relay 700 is inserted into the mounting groove 610, the pre-charging relay 700 can abut against the fixing block 622, so that the fixing block 622 drives the clamping rod 621 to move away from the pre-charging relay 700, when the pre-charging relay 700 is inserted in place, the fixing block 622 can abut against the side of the pre-charging relay 700 away from the base 100, so that the pre-charging relay 700 is fixed in the mounting groove 610; when it is needed to separate the pre-charging relay 700 from the mounting groove 610, the fixing block 622 is driven by the clamping rod 621 to move away from the pre-charging relay 700, so that the pre-charging relay 700 can be taken out of the mounting groove 610.

[0067] In the application, by adopting the arrangement of the mounting seat 600 and the pre-charging relay 700, when the pre-charging relay 700 needs to be repaired and replaced, the pre-charging relay 700 can be separated from the mounting seat 600 by separating the pre-charging relay 700 from the mounting groove 610, so that the pre-charging relay 700 is convenient to repair and replace; by clamping the pre-charging relay 700 and the mounting groove 610, the convenience of disassembling the pre-charging relay 700 is further improved; and the arrangement of the mounting seat 600 and the mounting groove 610 can position the pre-charging relay 700, so as to prevent the pre-charging relay 700 from deviating from the position on the base 100, thereby further improving the fixing effect of the pre-charging relay 700.

[0068] As shown in Figure 4 The battery cell circuit breaking unit further includes a first copper bar 800, a second copper bar 810, and a fuse 820. The main positive relay 300 is electrically connected with the first copper bar 800, the main negative relay 400 is electrically connected with the second copper bar 810, and the fuse 820 is arranged between the first copper bar 800 and the second copper bar 810.

[0069] In the application, by arranging the fuse 820 between the first copper bar 800 and the second copper bar 810, when the current exceeds the rated current of the fuse 820, the fuse inside the fuse 820 is fused due to overheating, cutting off the circuit and preventing the battery pack and the circuit from being damaged by excessive current; when a short circuit occurs, the short circuit current has a large amplitude, and a device with large breaking capacity, strong current limiting capacity, and fast breaking speed is needed for protection. The fuse 820 can provide effective large-amplitude short-circuit current protection, the action time is greatly reduced with the increase of the overcurrent amplitude, the current limiting capacity is obvious, and the circuit system of the battery pack can be effectively protected. The fuse 820 has a simple structure and is easy to install and replace. The fuse 820 can withstand impact current during normal operation and quickly open during overload or short-circuit failure, thereby cutting off the short-circuit current and providing higher protection.

[0070] In the embodiment, the battery circuit breaking unit further includes a pre-charging resistor 710, which is arranged in the base 100.

[0071] The application also provides a battery pack, which includes a frame 900 and the battery cell circuit breaking unit of any of the above embodiments arranged in the frame 900.

[0072] The specific structure of the battery cell circuit breaking unit has been described in detail in the above embodiments, which will not be repeated here.

[0073] In combination Figure 1 and Figure 2The battery pack further comprises a battery cell group 910, the battery cell group 910 and one side of the frame 900 have an installation space 920, the base 100 is located in the installation space 920, and a partition plate 930 is arranged between the battery cell group 910 and the base 100, and the partition plate 930 is used for blocking the heat generated by the battery cell group 910 from affecting the base 100 and the cover 200.

[0074] In a third aspect, the application provides an automobile, comprising a vehicle body and a battery cell breaking unit arranged on the vehicle body.

[0075] The specific structure of the battery cell breaking unit has been described in detail in the above embodiments, and will not be repeated here.

[0076] The automobile provided by the embodiments of the application, when the main positive relay 300 and the main negative relay 400 need to be repaired and replaced, the cover 200 is disengaged from the base 100 through the first clamping piece 110 and the second clamping piece 210, so that the cover 200 can be separated from the base 100, the first mounting bolt is removed, so that the first mounting plate 311 drives the main positive relay 300 to be removed, thereby facilitating the repair and replacement of the main positive relay 300, the second mounting bolt is removed, so that the second mounting plate 411 can drive the main negative relay 400 to be removed, thereby facilitating the repair and replacement of the main negative relay 400, without the need to remove the base 100 and the cover 200 to disassemble and assemble the main positive relay 300 and the main negative relay 400, thereby facilitating the repair and replacement of the main positive relay 300 and the main negative relay 400; when the pre-charging relay 700 needs to be repaired and replaced, the pre-charging relay 700 is disengaged from the mounting groove 610, so that the pre-charging relay 700 is disengaged from the mounting seat 600, thereby facilitating the repair and replacement of the pre-charging relay 700, and improving the convenience of repairing and replacing the main positive relay 300, the main negative relay 400 and the pre-charging relay 700.

[0077] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be limited only by the scope of the claims, including any appropriate amendments thereof, and that there be accounted to be encompassed within this application all adaptations, modifications, and alternatives falling within the scope of the claims. The specification and examples are to be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0078] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow, including any appropriate amendments thereof.

Claims

1. A battery cell circuit breaker unit, characterized in that: include: A base (100) and a cover (200), wherein the base (100) is used to be arranged in a frame (900) of a battery pack, and the cover (200) is used to be engaged with or disengaged from the base (100) to be fixed to or disengaged from the base (100); A main positive relay (300) and a first mounting member (310), wherein the first mounting member (310) is used to detachably connect the main positive relay (300) to the base (100); A main negative relay (400) and a second mounting member (410), wherein the second mounting member (410) is used to detachably connect the main negative relay (400) to the base (100).

2. The battery cell disconnect unit according to claim 1, characterized in that: A plurality of first clamping members (110) are provided on the outer wall of the base (100) along the circumference of the base (100), and a plurality of second clamping members (210) are provided on the cover (200) along the circumference of the cover (200), wherein the first clamping members (110) are used to move in or out of the second clamping members (210) accordingly to drive the cover (200) to engage or disengage with the base (100).

3. The battery cell disconnect unit according to claim 1, characterized in that: The first mounting member (310) comprises a first mounting plate (311) and a first mounting bolt. The first mounting plates (311) are provided on opposite sides of the main positive relay (300). The first mounting bolts are passed through the first mounting plates (311) on both sides. The first mounting bolts are used for threaded connection with the base (100).

4. The battery cell disconnect unit according to claim 1, characterized in that: The second mounting member (410) comprises a second mounting plate (411) and a second mounting bolt. The second mounting plates (411) are provided on opposite sides of the main negative relay (400). The second mounting plates (411) on both sides are provided with second mounting bolts. The second mounting bolts are used for threaded connection with the base (100).

5. The battery cell disconnecting unit according to any one of claims 1 to 4, characterized in that: It also includes a third mounting member (500), and the third mounting member (500) is used to detachably connect the base (100) to the frame (900).

6. The battery cell disconnect unit according to claim 5, characterized in that: The third mounting member (500) includes a third mounting plate (510) and a third mounting bolt (520). The third mounting plates (510) are provided on opposite sides of the base (100). Third mounting bolts (520) are passed through the third mounting plates (510) on both sides. The third mounting bolts (520) are used to be threadedly connected to the frame (900).

7. The battery cell disconnecting unit according to any one of claims 1 to 4, characterized in that: The device further comprises a mounting seat (600) and a pre-charge relay (700), wherein the mounting seat (600) is arranged on the base (100), a mounting groove (610) is provided on the mounting seat (600), and the pre-charge relay (700) is used to be engaged with or disengaged from the mounting groove (610) so as to be fixed to or disengaged from the mounting seat (600).

8. The battery cell circuit breaker unit according to any one of claims 1 to 4, characterized in that: The invention also includes a first copper bar (800), a second copper bar (810) and a fuse (820), wherein the main positive relay (300) is electrically connected to the first copper bar (800), the main negative relay (400) is electrically connected to the second copper bar (810), and the fuse (820) is arranged between the first copper bar (800) and the second copper bar (810).

9. A battery pack, characterized in that: The invention comprises a frame (900) and a battery cell disconnecting unit according to any one of claims 1 to 8, which is arranged in the frame (900).

10. An automobile, characterized in that: The vehicle comprises a vehicle body and a battery cell circuit breaker unit as claimed in any one of claims 1 to 8, which is arranged on the vehicle body.

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