Protective structure of output electrode base of battery module

Abstract

A protection structure of a battery module output electrode base comprises a main body, a first mounting part and a second mounting part, the main body comprises a cavity, the cavity is used for accommodating an output end of the output electrode base, and the first mounting part and the second mounting part are located on the same side of the output end. The second mounting part comprises a connecting part located on the inner wall of the cavity, the first mounting part is located on the outer surface, opposite to the inner wall, of the main body, and the main body is detachably mounted on the output pole base through the first mounting part and the second mounting part; and the main body covers the output end of the output pole base, so that the main body can be stably and reliably mounted on the output pole base, the main body is prevented from shaking or falling off due to vibration in the transportation process, the structure is simple, disassembly and assembly are convenient, and good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a protective structure of an output pole base of a battery module. Background Art

[0002] A battery module is a battery unit with higher voltage and capacity, which is composed of several battery cells connected in series or parallel. Different power requirements can be met by adjusting the number of battery cells.

[0003] The output pole base is an important structure of the battery module. The battery module is connected to the external conductive parts through the busbars arranged on the output pole base to achieve electrical connection with the external load. When the battery module is not connected to the external load, the output terminal is exposed. During transportation or maintenance, the battery module is prone to short circuit, affecting the normal use of the battery module. Since the battery module has the characteristics of high voltage and large current, electric shock accidents are prone to occur, which poses a great safety hazard. Therefore, the output terminal on the output pole base needs to be protected to improve the safety of the battery module. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a protective structure for the output pole base of a battery module, which has a simple structure, is easy to disassemble and assemble, is firmly installed, and is not easy to fall off.

[0005] The utility model provides a protective structure for an output pole base of a battery module, comprising a main body, a first mounting portion and a second mounting portion, the main body comprising a cavity, the cavity being used to accommodate the output end of the output pole base, the first mounting portion and the second mounting portion being located on the same side of the output end, the second mounting portion comprising a connecting portion located on the inner wall of the cavity, the first mounting portion being located on the outer surface of the main body opposite to the inner wall, the main body being detachably mounted on the output pole base via the first mounting portion and the second mounting portion, and the main body cover being arranged at the output end of the output pole base.

[0006] In one embodiment, the main body includes a first mounting plate, a second mounting plate, a side plate and a cover plate, the first mounting plate and the second mounting plate are opposite to each other and spaced apart in the left-right direction, the side plate is connected to the front end of the first mounting plate and the second mounting plate, the cover plate is connected to the first mounting plate, the second mounting plate and the upper end of the side plate, and the first mounting plate and the second mounting plate can be displaced in the left-right direction under the action of external force.

[0007] In one embodiment, the height dimension of the side plate along the up-down direction is smaller than the height dimension of the first mounting plate and the second mounting plate along the up-down direction, so that the main body forms a mounting area at the lower end of the side plate, and the mounting area is connected to the cavity for avoiding the busbar connected to the output end.

[0008] In one embodiment, the first mounting portion includes a clamping piece protruding from the first mounting plate and the second mounting plate at one end away from the cavity, and the output pole base is provided with a first matching portion detachably connected to the first mounting portion, and the first matching portion includes a slot that matches the clamping piece, and when the main body is connected to the output pole base, the clamping piece is clamped in the slot.

[0009] In one embodiment, the second mounting portion includes a support plate, which is protruded from the lower ends of the first mounting plate and the second mounting plate, the connecting portion includes a stopper, which is protruded from one end of the support plate close to the cavity, and a second matching portion detachably connected to the second mounting portion is provided on the output pole base, the second matching portion includes a limiting groove that cooperates with the support plate and the stopper, and the limiting groove is opened at the upper end of the output pole base.

[0010] In one embodiment, the limiting groove includes a first slot and a second slot that are connected, and the first slot and the second slot penetrate the output pole base in the up and down directions. When the main body is installed on the output pole base, the support plate is inserted into the first slot, and its lower end passes through the first slot, and the stop member passes through the lower end of the second slot.

[0011] In one embodiment, a slope is provided at one end of the support sheet away from the cavity, and the slope gradually reduces the width of the support sheet along the left-right direction from top to bottom.

[0012] In one embodiment, a guide portion is provided on the main body, and the guide portion includes a guide column. The guide column is protruded from one end of the first mounting plate and the second mounting plate away from the cavity, and the guide column extends in the up and down directions. A guide groove cooperating with the guide column is provided on the output pole base. When the main body is installed on the output pole base, the guide column is slid into the guide groove.

[0013] In one embodiment, a guide portion is provided on the main body, and the guide portion includes a first guide member cooperating with the first mounting portion, the first guide member is protruding from the first mounting plate and the second mounting plate at one end away from the cavity, the upper end of the first guide member is connected to the lower end of the clamping member, and the width dimension of the first guide member in the left and right directions gradually decreases from top to bottom, and when the main body is connected to the output pole base, the first guide member and the clamping member are clamped in the slot.

[0014] In one embodiment, a guide portion is provided on the main body, and the guide portion includes a second guide member cooperating with the second mounting portion, the second guide member is protruding from the first mounting plate and one end of the second mounting plate away from the cavity, and the lower end of the second guide member is connected to the upper end of the support plate.

[0015] The beneficial effects of the utility model are:

[0016] By arranging the first mounting portion and the second mounting portion on the main body, the main body can be detachably mounted on the output pole base, and the output end can be shielded and protected so that the output end is not exposed to the outside, or the connection between the output end and the bus bar is not exposed to the outside; the first mounting portion cooperates with the second mounting portion to enable the main body to be stably and reliably mounted on the output pole base, so that the main body will not be vibrated or fall off during transportation, thereby reducing the chance of electric shock, improving safety, and having a simple structure and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the main body of an embodiment of the utility model;

[0019] Figure 2 Another structural schematic diagram of the main body of an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure in which the main body of an embodiment of the utility model is installed on the output pole base;

[0021] Figure 4 This is a cross-sectional view of a main body of an embodiment of the utility model installed on an output pole base;

[0022] Figure 5It is an enlarged schematic diagram of the second matching portion of an embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the main body of another embodiment of the utility model;

[0024] Figure 7 It is a structural schematic diagram of an output pole base according to an embodiment of the utility model.

[0025] In the figure:

[0026] 10-main body; 101-cavity; 102-inner wall surface; 103-outer surface; 11-first mounting plate; 12-second mounting plate; 13-side plate; 14-cover plate; 15-installation area;

[0027] 20-first mounting portion; 21-clip member;

[0028] 30-second mounting portion; 31-supporting sheet; 311-slope; 32-stopper;

[0029] 40-guide portion; 41-guide column; 42-first guide member; 421-first guide slope; 43-second guide member;

[0030] 50-output pole base; 501-first guide plate; 502-second guide plate; 503-baffle; 51-output end; 52-slot; 53-limiting slot; 531-first slot; 532-second slot; 54-guide slot; 55-guide platform. DETAILED DESCRIPTION

[0031] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0034] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0035] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0036] To facilitate understanding of the positional relationship and connection relationship of the various components in the present invention, as shown in the attached Figure 1 As shown, the X-axis is defined as the left-right direction, in which the direction indicated by the arrow is right, the Y-axis is defined as the front-back direction, in which the direction indicated by the arrow is back, and the Z-axis is defined as the up-down direction, in which the direction indicated by the arrow is up.

[0037] It can be understood that the above-mentioned orientation relationship is intended to illustrate the positional relationship of the various components in the present invention, and does not mean that the present invention can only be installed in the above-mentioned orientation, nor does it mean that the various components can only be arranged in the above-mentioned orientation.

[0038] Combined with Figure 1 and attached Figure 4 The protective structure of the battery module output pole base proposed by the utility model includes a main body 10, a first mounting portion 20 and a second mounting portion 30. The main body 10 includes a cavity 101, and the cavity 101 is used to accommodate the output terminal 51 of the output pole base 50. The second mounting portion 30 includes a connecting portion located on the inner wall of the cavity 101. The first mounting portion 20 is located on the outer surface of the main body 10 opposite to the inner wall. With the output terminal 51 as a reference, the first mounting portion 20 and the second mounting portion 30 are located on the same side of the output terminal 51. See the attached Figure 4 If the connection portion of the second mounting portion 30 is located on the inner wall surface 102 of the cavity 101 , the first mounting portion 20 is located on the outer surface 103 of the main body 10 opposite to the inner wall surface 102 .

[0039] The main body 10 is detachably mounted on the output pole base 50 through the first mounting portion 20 and the second mounting portion 30, so that the main body 10 is covered at the output end 51 through the cavity 101. When the main body 10 is mounted on the output pole base 50, the first mounting portion 20 cooperates with the second mounting portion 30 and their connecting portions, so that the main body 10 does not produce relative position changes with the output pole base 50 in the horizontal direction (front and rear direction or left and right direction) in the absence of external force, such as shaking, loosening or falling off, so that the main body 10 is stably and securely mounted on the output pole base 50.

[0040] In one embodiment of the utility model, the main body 10 is made of ABS (Acrylonitrile butadieneStyrene copolymers), which has good insulation properties, can prevent leakage at the output terminal 51 or the connection between the output terminal 51 and the bus bar, and has good flame retardant properties, thereby reducing the probability of accidents, eliminating safety hazards, and improving the use and assembly safety of the battery module.

[0041] In one embodiment of the present invention, as shown in the attached Figure 1 As shown, the main body 10 includes a first mounting plate 11, a second mounting plate 12, a side plate 13 and a cover plate 14. The first mounting plate 11 and the second mounting plate 12 are opposite to each other and spaced apart in the left-right direction. The side plate 13 is connected to the front ends of the first mounting plate 11 and the second mounting plate 12. The cover plate 14 is connected to the upper ends of the first mounting plate 11, the second mounting plate 12 and the side plate 13. The first mounting plate 11, the second mounting plate 12, the side plate 13 and the cover plate 14 together form a cavity 101.

[0042] Among them, the first mounting plate 11 and the second mounting plate 12 are configured so that when an external force is applied to the first mounting plate 11 and the second mounting plate 12 along the left and right directions, the lower ends of the first mounting plate 11 and the second mounting plate 12 can have an offset in the left and right directions with the connection between them and the cover plate 14 as a reference axis.

[0043] Combined with Figure 2 The height dimension of the side plate 13 along the up-down direction is smaller than the height dimension of the first mounting plate 11 and the second mounting plate 12 along the up-down direction, so that the main body 10 forms a mounting area 15 at the lower end of the side plate 13, and the mounting area 15 is connected to the cavity 101 for avoiding the busbar, one end of the busbar is connected to the output terminal 51, and the other end passes through the mounting area 15 and is connected to the external load. Such an arrangement can prevent the connection between the output terminal 51 and the busbar from being exposed to the outside, thereby playing a good protective role and facilitating the stability of the connection between the output terminal 51 and the busbar.

[0044] In one example, the first mounting plate 11, the second mounting plate 12, the side plate 13 and the cover plate 14 are integrated into one piece by injection molding, which has a simple structure and is convenient for mass production.

[0045] In one embodiment of the present invention, as shown in the attached Figure 3 As shown, a first guide plate 501, a second guide plate 502 and a baffle 503 are protruding from the upper end of the output pole base 50, the first guide plate 501 and the second guide plate 502 are opposite to each other and spaced apart in the left-right direction, the first guide plate 501 is used to cooperate with the first mounting plate 11, the second guide plate 502 is used to cooperate with the second mounting plate 12, the baffle 503 is connected to the rear ends of the first guide plate 501 and the second guide plate 502, the output end 51 is located in a protective area surrounded by the first guide plate 501, the second guide plate 502 and the baffle 503, when the main body 10 is connected to the output pole base 50, the cavity 101 is connected to the protective area, the side plate 13 is located on the front side of the baffle 503, and is opposite to and spaced apart from the baffle 503 in the front-back direction.

[0046] In one example, the first guide plate 501 , the second guide plate 502 , and the baffle plate 503 are integrally formed with the output pole base 50 .

[0047] In one embodiment of the present invention, Figure 1 and attached Figure 2 The first mounting portion 20 includes a clamping member 21 protruding from one end of the first mounting plate 11 and the second mounting plate 12 away from the cavity 101, as shown in the attached Figure 3 As shown, the output pole base 50 is provided with a first matching portion detachably connected to the first mounting portion 20, and the first matching portion includes a slot 52 that matches with the snap-in 21. When the main body 10 is connected to the output pole base 50, the main body 10 is installed on the output pole base 50 from top to bottom, and the snap-in 21 is snapped in the slot 52.

[0048] In one example, the clamping member 21 is integrally formed with the first mounting plate 11 and the second mounting plate 12 .

[0049] In one example, the slot 52 is disposed at one end of the first guide plate 501 and the second guide plate 502 close to the protection area.

[0050] In one embodiment of the present invention, Figure 1 and attached Figure 2 The second mounting portion 30 includes a support sheet 31, which is protruded from the lower ends of the first mounting plate 11 and the second mounting plate 12. The connecting portion includes a stopper 32, which is protruded from one end of the support sheet 31 close to the cavity 101, and the stopper 32 protrudes and extends in the left and right directions. Figure 3 and attached Figure 4The output pole base 50 is provided with a second matching portion detachably connected to the second mounting portion 30 , and the second matching portion includes a limiting groove 53 opened at the upper end of the output pole base 50 , and the limiting groove 53 cooperates with the support sheet 31 and the stopper 32 to achieve snap connection.

[0051] In one example, the support sheet 31 and the stopper 32 are integrally formed.

[0052] In one example, as shown in the attached Figure 5 As shown, the limiting groove 53 includes a first slot 531 and a second slot 532, the first slot 531 and the second slot 532 penetrate the output pole base 50 in the up-down direction, and the first slot 531 is connected to the second slot 532, the first slot 531 cooperates with the support sheet 31, the height dimension of the support sheet 31 in the up-down direction is greater than the slot depth of the first slot 531 in the up-down direction, the width dimension of the first slot 531 in the left-right direction is greater than the width dimension of the support sheet 31 in the left-right direction, and the second slot 532 cooperates with the stopper 32. When the main body 10 is installed on the output pole base 50, the support sheet 31 is penetrated in the first slot 531, and its lower end penetrates the first slot 531, the stopper 32 penetrates the lower end of the second slot 532, and is partially located below the second slot 532, that is, the orthographic projection of the stopper 32 in the up-down direction partially overlaps with the orthographic projection of the second slot 532 in the up-down direction.

[0053] The first slot 531 and the support sheet 31 cooperate to guide the installation of the main body 10 to ensure a stable and efficient installation process. The stopper 32 cooperates with the second slot 532 to play a good positioning role during the disassembly and assembly process of the support sheet 31 and the first slot 531, making it easy to install the support sheet 31 in place at one time.

[0054] In one example, as shown in the attached Figure 2 As shown, a slope 311 is provided at one end of the support sheet 31 away from the cavity 101. The slope 311 gradually reduces the width of the support sheet 31 along the left-right direction from top to bottom. This arrangement facilitates the installation of the support sheet 31 into the first slot 531 or removal from the first slot 531, thereby improving the disassembly and assembly efficiency.

[0055] When the main body 10 is removed from the output pole base 50, the operator can press the first mounting plate 11 to the right and the second mounting plate 12 to the left by hand. The support plate 31 moves along the left and right directions with the first mounting plate 11 and the second mounting plate 12 in the first slot 531, so that the clamping member 21 can be partially disengaged from the slot 52. At this time, the main body 10 is lifted up and the stopper 32 passes through the second slot 532 until the clamping member 21 is completely disengaged from the slot 52. The connection relationship between the first mounting part 20 and the first matching part, and the connection relationship between the second mounting part 30 and the second matching part can be released, and the main body 10 can be removed. The disassembly and assembly is simple and convenient, and the disassembly and assembly efficiency is high.

[0056] In one embodiment of the present invention, as shown in the attached Figure 1 As shown, the main body 10 is provided with a guide portion 40, and the guide portion 40 includes a guide column 41. The guide column 41 is protrudingly arranged at one end of the first mounting plate 11 and the second mounting plate 12 away from the cavity 101, and the guide column 41 extends in the up-down direction. Figure 3 The output pole base 50 is provided with a guide groove 54 that cooperates with the guide column 41. When the main body 10 is installed on the output pole base 50, the guide column 41 is slidably arranged in the guide groove 54, which can guide the installation of the main body 10. The main body 10 can be accurately and efficiently installed on the output pole base 50 from top to bottom until the first mounting portion 20 and the second mounting portion 30 are installed in place, and the installation of the main body 10 can be completed.

[0057] In one example, the guide pillar 41 is integrally formed with the first mounting plate 11 and the second mounting plate 12 .

[0058] In one example, the orthographic projection of the guide post 41 along the up-down direction is semicircular.

[0059] In one example, two guide posts 41 are provided on the first mounting plate 11 , and the two guide posts 41 are spaced apart and distributed on the first mounting plate 11 along the front-to-back direction, and the clamping member 21 is protruded between the two guide posts 41 .

[0060] In one example, two guide posts 41 are provided on the second mounting plate 12 , and the two guide posts 41 are spaced apart and distributed on the second mounting plate 12 along the front-to-back direction, and the clamping member 21 is protruded between the two guide posts 41 .

[0061] It can be understood that the width dimension of the clamping member 21 along the left-right direction should be greater than the width dimension of the guide post 41 along the left-right direction.

[0062] In one example, the guide slot 54 is opened at one end of the first guide plate 501 and the second guide plate 502 close to the protection area.

[0063] In one embodiment of the present invention, as shown in the attached Figure 3As shown, a guide portion 40 is provided on the main body 10, and the guide portion 40 includes a first guide member 42 that cooperates with the first mounting portion 20. The first guide member 42 is protruding from the first mounting plate 11 and the second mounting plate 12 at one end away from the cavity 101. The first guide member 42 is located at the lower end of the clip 21, and the upper end of the first guide member 42 is connected to the lower end of the clip 21. The width dimension of the first guide member 42 in the left and right directions gradually decreases from top to bottom to form a first guide slope 421. When the main body 10 is installed on the output pole base 50, the first guide member 42 and the clip 21 are clamped in the slot 52. The first guide member 42 facilitates the clip 21 to enter and be accommodated in the slot 52. When the main body 10 is removed from the output pole base 50, the first guide slope 421 can facilitate the clip 21 to escape from the slot 52, which is convenient for disassembly and assembly.

[0064] In one example, the first guide member 42 and the clamping member 21 are formed integrally.

[0065] In one embodiment of the present invention, as shown in the attached Figure 6 As shown, a guide portion 40 is provided on the main body 10, and the guide portion 40 includes a second guide member 43 that cooperates with the second mounting portion 30. The second guide member 43 is protruded from the end of the first mounting plate 11 and the second mounting plate 12 away from the cavity 101. The second guide member 43 is located at the upper end of the support sheet 31. The thickness of the support sheet 31 in the left-right direction is greater than the thickness of the first mounting plate 11 and the second mounting plate 12 in the left-right direction. The lower end of the second guide member 43 is connected to the upper end of the support sheet 31. Such an arrangement can increase the structural stability of the support sheet 31 and facilitate processing.

[0066] The number of the second mounting portions 30 is set to four, and two of them are spaced apart and distributed on the first mounting plate 11 and the second mounting plate 12 along the front-to-back direction. The number of the second guide members 43 is the same as that of the second mounting portions 30. The clamping member 21 is located between the two second mounting portions 30. More specifically, the clamping member 21 is located between the two second guide members 43. Figure 7 As shown, a guide platform 55 cooperating with the second mounting portion 30 is protruded on the output pole base 50, and a slot 52 is provided on the guide platform 55. When the main body 10 is installed on the output pole base 50, the two second guide members 43 are located at the front and rear sides of the guide platform 55 and contact the guide platform 55. Through the cooperation between the second guide members 43 and the guide platform 55, the main body 10 can be easily installed on the output pole base 50.

[0067] It can be understood that the width dimension of the second guide member 43 in the left-right direction is smaller than the sum of the width dimension of the guide platform 55 in the left-right direction and the width dimension of the clamping member 21 in the left-right direction.

[0068] In one example, the guide platform 55 is protruded from one side of the first guide plate 501 and the second guide plate 502 close to the protection area.

[0069] In one example, the guide platform 55 is integrally formed with the first guide plate 501 and the second guide plate 502 .

[0070] By adopting the protective structure of the output pole base of the battery module of the utility model, the main body 10 can be detachably mounted on the output pole base 50 by arranging the first mounting portion 20 and the second mounting portion 30 on the main body 10, and the output terminal 51 is shielded and protected so that the output terminal 51 is not exposed to the outside, or the connection between the output terminal 51 and the bus bar is not exposed to the outside; the first mounting portion 20 cooperates with the second mounting portion 30 to enable the main body 10 to be stably and reliably mounted on the output pole base 50, so that the main body 10 will not be vibrated or fall off during transportation, thereby reducing the probability of electric shock and improving safety. The structure is simple and the installation is convenient.

[0071] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A protective structure for a battery module output pole base, characterized in that: The invention comprises a main body (10), a first mounting portion (20) and a second mounting portion (30), wherein the main body (10) comprises a cavity (101), the cavity (101) is used to accommodate an output end (51) of an output pole base (50), the first mounting portion (20) and the second mounting portion (30) are located on the same side of the output end (51), the second mounting portion (30) comprises a connecting portion located on the inner wall of the cavity (101), the first mounting portion (20) is located on the outer surface of the main body (10) opposite to the inner wall, the main body (10) is detachably mounted on the output pole base (50) via the first mounting portion (20) and the second mounting portion (30), and the main body (10) is covered at the output end (51) of the output pole base (50).

2. The protective structure of the battery module output pole base according to claim 1, characterized in that: The main body (10) comprises a first mounting plate (11), a second mounting plate (12), a side plate (13) and a cover plate (14); the first mounting plate (11) and the second mounting plate (12) are arranged opposite to each other and spaced apart in a left-right direction; the side plate (13) is connected to the front ends of the first mounting plate (11) and the second mounting plate (12); the cover plate (14) is connected to the upper ends of the first mounting plate (11), the second mounting plate (12) and the side plate (13); the first mounting plate (11) and the second mounting plate (12) can be displaced in a left-right direction under the action of an external force.

3. The protection structure of the battery module output pole base according to claim 2, characterized in that: The height dimension of the side plate (13) in the up-down direction is smaller than the height dimensions of the first mounting plate (11) and the second mounting plate (12) in the up-down direction, so that the main body (10) forms a mounting area (15) at the lower end of the side plate (13), and the mounting area (15) is connected to the cavity (101) to avoid the busbar connected to the output end (51).

4. The protection structure of the battery module output pole base according to claim 2, characterized in that: The first mounting portion (20) includes a clamping member (21) protruding from one end of the first mounting plate (11) and the second mounting plate (12) away from the cavity (101); the output pole base (50) is provided with a first matching portion detachably connected to the first mounting portion (20); the first matching portion includes a slot (52) matching with the clamping member (21); when the main body (10) is connected to the output pole base (50), the clamping member (21) is clamped in the slot (52).

5. The protection structure of the battery module output pole base according to claim 2, characterized in that: The second mounting portion (30) comprises a supporting sheet (31), wherein the supporting sheet (31) is protruding from the lower ends of the first mounting plate (11) and the second mounting plate (12); the connecting portion comprises a stopper (32), wherein the stopper (32) is protruding from one end of the supporting sheet (31) close to the cavity (101); a second matching portion detachably connected to the second mounting portion (30) is provided on the output pole base (50); the second matching portion comprises a limiting groove (53) matching with the supporting sheet (31) and the stopper (32); and the limiting groove (53) is provided at the upper end of the output pole base (50).

6. The protection structure of the battery module output pole base according to claim 5, characterized in that: The limiting groove (53) comprises a first groove (531) and a second groove (532) which are connected to each other. The first groove (531) and the second groove (532) penetrate the output pole base (50) in the up-down direction. When the main body (10) is installed on the output pole base (50), the supporting plate (31) is inserted into the first groove (531), and its lower end passes through the first groove (531), and the stopper (32) passes through the lower end of the second groove (532).

7. The protection structure of the battery module output pole base according to claim 5 or 6, characterized in that: A slope (311) is provided at one end of the support sheet (31) away from the cavity (101), and the slope (311) causes the width of the support sheet (31) to gradually decrease from top to bottom along the left-right direction.

8. The protection structure of the battery module output pole base according to claim 2, characterized in that: The main body (10) is provided with a guide portion (40), and the guide portion (40) includes a guide column (41). The guide column (41) is protruding from one end of the first mounting plate (11) and the second mounting plate (12) away from the cavity (101), and the guide column (41) extends in the up-down direction. The output pole base (50) is provided with a guide groove (54) that cooperates with the guide column (41). When the main body (10) is installed on the output pole base (50), the guide column (41) is slidably arranged in the guide groove (54).

9. The protection structure of the battery module output pole base according to claim 4, characterized in that: The main body (10) is provided with a guide portion (40), and the guide portion (40) includes a first guide member (42) matched with the first mounting portion (20), and the first guide member (42) is protruding from one end of the first mounting plate (11) and the second mounting plate (12) away from the cavity (101), and the upper end of the first guide member (42) is connected to the lower end of the clamping member (21), and the width dimension of the first guide member (42) in the left-right direction gradually decreases from top to bottom. When the main body (10) is connected to the output pole base (50), the first guide member (42) and the clamping member (21) are clamped in the clamping groove (52).

10. The protection structure of the battery module output pole base according to claim 5, characterized in that: The main body (10) is provided with a guide portion (40), and the guide portion (40) includes a second guide member (43) cooperating with the second mounting portion (30), and the second guide member (43) is protruding from one end of the first mounting plate (11) and the second mounting plate (12) away from the cavity (101), and the lower end of the second guide member (43) is connected to the upper end of the support sheet (31).

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