An output electrode protection component and a battery pack

Abstract

This utility model provides an output electrode protection component and a battery pack, including a base, a top cover, and an assembly nut. The base includes a bottom plate and a first side and a second side respectively disposed on opposite sides of the bottom plate. The bottom plate, the first side, and the second side form a through mounting groove in the front-to-back direction of the base. The top cover is connected to the first side of the base via an adapter and is detachably connected to the second side of the base, covering the mounting groove. A guide structure with a front-to-back guiding direction is provided on the bottom plate, and the assembly nut is movably mounted to the bottom plate of the base through the guide structure. The integrated design of the base and top cover reduces manufacturing costs, streamlines the assembly process, and improves assembly efficiency. The assembly nut can slide along the guide structure, avoiding the risk of breakage at the connection between the output electrode connecting piece and the battery cell due to cell expansion.

Description

Technical Field

[0001] This utility model relates to the field of battery pack design technology, and in particular to an output electrode protection component and a battery pack. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage technologies, the safety, reliability, and assembly efficiency of the electrical connections of power battery packs, as the core energy source, have received widespread attention. In the battery pack structure, the output electrode base is usually fixed on structural components (such as box beams, module end plates, etc.) to connect the output electrode connecting pieces of the cells to the external circuit, thereby realizing the output of electrical energy. The base and protective cover provide insulation protection for the output electrode connecting pieces.

[0003] In existing technologies, output electrode protection components mostly adopt a split design, including components such as an output electrode base, an output electrode connecting piece, fastening bolts, and an insulating protective cover. The output electrode base is fixed to the structural components of the battery pack, and its internal nut is usually a nested, integrally molded piece. The output electrode connecting piece has bolt holes, and the output electrode base and the output electrode connecting piece are connected by bolts for locking and securing. During connection, the bolt passes through the bolt hole and is threaded into the nut on the output electrode base. After the bolt is tightened, the independent output electrode protective cover is installed to achieve insulation protection.

[0004] However, the above structure has the following technical defects:

[0005] First, the output base and the insulating protective cover are two independent components that need to be manufactured separately by molds, which increases the variety of molds and production costs. In addition, the assembly process is complicated, requiring the bolt tightening, protective cover installation and other steps to be completed in sequence, which increases manufacturing and maintenance costs.

[0006] Secondly, the nuts in the output electrode base are typically fixed within the insulating material using an insert injection molding method. Once molded, the nut's position is fixed and cannot be adjusted. During actual assembly, due to machining errors in structural components, cell stacking tolerances, or assembly deviations, the bolt holes of the output electrode connector and the nut axis are prone to misalignment, making bolt pre-tightening difficult and even leading to stripping or seizing. Furthermore, manufacturing tolerances make it difficult for the output electrode connector and nut to fit perfectly, resulting in minute gaps. Under long-term vibration or thermal cycling conditions, this can easily cause the connection to loosen, affecting connection strength, leading to torque attenuation, and impacting the stability and safety of the electrical connection.

[0007] Furthermore, during long-term use, the battery cells are prone to expansion and deformation due to cyclic aging or thermal effects, which in turn squeezes adjacent structural components. This causes deformation of the structural components that fix the output pole base, resulting in displacement of the output pole base relative to the battery cell. This applies additional tensile stress or bending moment to the output pole connecting piece, which can easily cause the output pole connecting piece to break at the welding or pressing point with the battery cell terminal, resulting in electrical connection failure. Utility Model Content

[0008] Based on the above description, this utility model provides an output electrode protection component and a battery pack, aiming to solve the technical problem of high cost of output electrode protection components in the prior art.

[0009] An output pole protection assembly includes a base, a top cover, and an assembly nut. The base includes a bottom plate and a first side and a second side disposed on opposite left and right sides of the bottom plate. The bottom plate, the first side, and the second side form a through mounting groove in the front-rear direction of the base.

[0010] The top cover is connected to the first side of the base via an adapter and is detachably connected to the second side of the base. The top cover is positioned above the mounting groove.

[0011] The base plate has a guide structure with the guide direction in the front-to-back direction, and the assembled nut can be movably installed onto the base plate of the base through the guide structure.

[0012] Furthermore, the guide structure includes a guide groove in the base plate and a left limiting platform and a right limiting platform formed at the opening of the guide groove;

[0013] The assembled nut includes a limiting body that mates with the guide groove;

[0014] The limiting body has a positioning pin with an internal threaded hole in the middle;

[0015] The left side of the limiting body is provided with a left elastic component for closely abutting the left limiting stage;

[0016] The right side of the limiting body is provided with a right elastic component for closely abutting the right limiting platform.

[0017] Furthermore, the limiting body includes a lower part, a middle part, and an upper part, with the middle part connecting the lower part and the upper part.

[0018] The lower part of the main body is located in the guide groove, the left side of the upper part of the main body is placed on the upper surface of the left limiting stage, and the right side of the upper part of the main body is placed on the upper surface of the right limiting stage.

[0019] A groove is provided in the center of the upper part of the main body, and the groove extends downward to the middle of the main body;

[0020] The positioning pin is located in the groove.

[0021] Furthermore, the left elastic component includes a first upper spring piece connected to the upper part of the body and a first lower spring piece connected to the lower part of the body, the first upper spring piece and the first lower spring piece being vertically opposite each other and extending along the guiding direction of the guide groove;

[0022] The first upper spring abuts against the upper surface of the left limiting stage, and the first lower spring abuts against the lower surface of the left limiting stage to clamp the left limiting stage.

[0023] The right elastic component includes a second upper spring piece connected to the upper part of the body and a second lower spring piece connected to the lower part of the body. The second upper spring piece and the second lower spring piece are opposite each other and extend along the guiding direction of the guide groove.

[0024] The second upper spring abuts against the upper surface of the right limiting stage, and the second lower spring abuts against the lower surface of the right limiting stage to clamp the right limiting stage.

[0025] Furthermore, two guide structures are provided on the base plate, and each guide structure corresponds to the installation of an assembly nut.

[0026] Furthermore, the top cover and the base are integrally injection molded, and the junction area between the top cover and the base is a thin-walled area. The hinge structure formed by the thin-walled area allows the top cover to be connected to the first side of the base by a transfer method.

[0027] Furthermore, both the first and second sides of the base are double-layered side plate structures, including an inner side plate and an outer side plate;

[0028] The outer panel of the first side and the top cover are connected by an adapter, while the outer panel of the second side and the top cover are detachably connected.

[0029] The inner side plates of the first and second sides are both connected to base fixing buckles.

[0030] An opening is provided on the outer side plate of the first side plate in the area corresponding to the base fixing buckle on the inner side plate of the first side plate;

[0031] The outer side plate of the second side has an opening in the area corresponding to the base fixing buckle on the inner side plate of the second side;

[0032] The base fixing buckle on the inner side plate of the first side and the base fixing buckle on the inner side plate of the second side are used to fix the protective component to the external device by means of a snap fastener.

[0033] Furthermore, the base has limiting blocks on both the front and rear sides at the bottom to limit the output electrode protection assembly in the front and rear directions of the external device.

[0034] Furthermore, the upper surface of the cover is provided with a wire harness fixing groove.

[0035] A battery pack includes an output electrode protection assembly as described above, and also includes a housing and a plurality of battery modules located within the housing;

[0036] A partition is provided between the battery modules, the output electrode protection component is fixed to the partition, and the assembly nut is used to fix the copper busbar and the output electrode connecting piece of the battery module to the partition by bolts.

[0037] The beneficial technical effects of this utility model are as follows:

[0038] By integrating the base and the top cover, two separate parts, into a single integrated insulating structure, the "base + cover" transition design significantly reduces the types of parts, lowers the number of molds to be developed, and reduces manufacturing costs. At the same time, it eliminates the separate installation process for the top cover, simplifies the assembly process, and improves assembly efficiency.

[0039] A guide structure is installed within the insulating base, allowing the assembled nut to slide along it. When the battery cells expand during long-term use, compressing and deforming the structural components, this guide structure allows for adaptive displacement of the nut. By moving the nut within the guide structure, displacement of the base relative to the battery cells is prevented. This, in turn, avoids tension on the output electrode connectors, reducing the risk of connection failures such as breakage at the connection between the output electrode connectors and the battery cells. Attached Figure Description

[0040] Figure 1 A three-dimensional structural schematic diagram of an output electrode protection component provided by this utility model;

[0041] Figure 2 A three-dimensional structural diagram of an assembled nut for an output pole protection component provided by this utility model;

[0042] Figure 3 A side view of an output electrode protection component provided by this utility model;

[0043] Figure 4 A side view of the installation output electrode connecting piece and copper busbar of an output electrode protection component provided by this utility model;

[0044] Figure 5 A schematic diagram of an output electrode protection component installed on a partition and with an output electrode connecting piece and a copper busbar provided by this utility model;

[0045] Figure 6 A schematic diagram of the structure of a battery module with output electrode protection assembly inside a battery pack provided by this utility model;

[0046] in,

[0047] 1-Base; 11-First side; 12-Second side; 13-Mounting groove; 15-Limiting block; 14-Base plate;

[0048] 141-Guide groove; 142-Left limiting stage; 143-Right limiting stage;

[0049] 2-Top cover; 21-Wire harness fixing groove;

[0050] 3-Assembled nut; 31-Limiting body; 32-Positioning pin; 33-Internal threaded hole; 34-Left elastic component; 35-Right elastic component;

[0051] 311 - Upper part of the body; 312 - Middle part of the body; 313 - Lower part of the body; 314 - Groove;

[0052] a-Inner side plate;

[0053] b-Outer lateral plate;

[0054] c - Thin-walled region;

[0055] 4-Base fixing buckle;

[0056] 5-Battery module; 51-Output terminal connector

[0057] 6-Partition;

[0058] 7-Fastening bolts;

[0059] 8-Bronze busbar;

[0060] 9-Output pole protection component. Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0063] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0064] See Figure 1 and Figure 3This utility model provides an output pole protection component, including a base 1, an upper cover 2 and an assembly nut 3. The base 1 includes a bottom plate 14 and a first side 11 and a second side 12 respectively disposed on the left and right opposite sides of the bottom plate 14. The bottom plate 14, the first side 11 and the second side 12 form a mounting groove 13 that runs through the front and rear directions of the base.

[0065] The top cover 2 is connected to the first side 11 of the base 1 by a conversion method and is detachably connected to the second side 12 of the base 1. The top cover 2 covers the mounting groove 13.

[0066] The base plate 14 is provided with a guide structure that guides in the front-to-back direction. The assembled nut 3 is movably installed onto the base plate 14 of the base 1 through the guide structure.

[0067] By integrating the base and the top cover, two separate parts, into a single integrated insulating structure, a "base + cover" connection design was achieved, reducing manufacturing costs. At the same time, the separate installation process for the top cover was eliminated, simplifying the assembly process and improving assembly efficiency.

[0068] A guide structure is installed within the insulating base, allowing the assembled nut to slide along the guide direction. During long-term use of the battery pack, when the cells expand, compressing structural components such as separators and causing deformation, this guide structure allows the nut to adapt and move within the guide structure. This prevents displacement of the base relative to the cells, thus avoiding tension on the output electrode connectors and reducing the risk of connection failures such as breakage at the connection between the output electrode connectors and the cells.

[0069] See Figures 2-4 Furthermore, the guide structure includes a guide groove 141 opened in the base plate 14 and a left limiting platform 142 and a right limiting platform 143 formed at the opening of the guide groove 141.

[0070] The assembled nut 3 includes a limiting body 31 that mates with the guide groove 141;

[0071] The limiting body 31 has a positioning pin 32 with an internal threaded hole 33 in the middle;

[0072] The left side of the limiting body 31 is provided with a left elastic component 34 for closely abutting the left limiting platform 142;

[0073] The right side of the limiting body 31 is provided with a right elastic component 35 for closely abutting the right limiting platform 143.

[0074] The guide groove is guided along the front-back direction of the base.

[0075] The assembled nut 3 is formed by stamping and bending. The left elastic component 34, the right elastic component 35, and the limiting body 31 are integrally formed.

[0076] The internal threaded holes in the positioning pin 32 are configured according to assembly requirements.

[0077] The left elastic component 34 and the right elastic component 35 are closely attached to the limiting stage, which can accommodate the errors caused by the process assembly in the Z direction (i.e., the up and down direction of the base), ensuring that the nut surface is tightly attached to the output pole connecting piece, ensuring proper assembly, and avoiding local overheating.

[0078] Specifically, the guide groove does not run through the entire base plate.

[0079] The nut can slide back and forth in the guide groove to absorb the tolerances in the XY plane during assembly, so that the bolt hole axis and the bolt are aligned. The elastic component of the nut can accommodate the Z-direction tolerance, reducing the risk of bolt assembly and local heat generation during assembly, improving the electrical connection strength and the safety of the battery pack.

[0080] Furthermore, the limiting body 31 includes a lower body 311, a middle body 312 and an upper body 313, with the middle body 312 connecting the lower body 311 and the upper body 313.

[0081] The lower part 311 of the main body is located in the guide groove 141, the left side of the upper part 313 of the main body is placed on the upper surface of the left limiting platform 142, and the right side of the upper part 313 of the main body is placed on the upper surface of the right limiting platform 143.

[0082] A groove 314 is provided in the center of the upper part 313 of the main body, and the groove 314 extends downward to the middle part 312 of the main body;

[0083] The positioning pin 32 is located in the groove 314.

[0084] The lower part 311, the middle part 312, and the upper part 313 of the main body form an I-shape.

[0085] Specifically, the groove 314 penetrates the middle part 312 of the body, and the bottom of the groove 314 is on the upper surface of the lower part 311 of the body. The positioning post 32 extends upward from the upper surface of the lower part 311 of the body.

[0086] Furthermore, the left elastic component 34 includes a first upper spring piece connected to the upper part 311 of the body and a first lower spring piece connected to the lower part 311 of the body. The first upper spring piece and the first lower spring piece are vertically opposite each other and extend along the guiding direction of the guide groove 141.

[0087] The first upper spring abuts against the upper surface of the left limiting stage 142, and the first lower spring abuts against the lower surface of the left limiting stage 142 to clamp the left limiting stage.

[0088] The right elastic component 143 includes a second upper spring piece connected to the upper part 311 of the body and a second lower spring piece connected to the lower part 313 of the body. The second upper spring piece and the second lower spring piece are opposite each other and extend along the guiding direction of the guide groove 141.

[0089] The second upper spring abuts against the upper surface of the right limiting stage 143, and the second lower spring abuts against the lower surface of the right limiting stage 143 to clamp the right limiting stage 143.

[0090] Furthermore, the pointing direction from the connection end where the first upper spring piece and the upper part 311 of the body are connected to the free end of the first upper spring piece is the same as the pointing direction from the connection end where the first lower spring piece and the lower part 311 of the body are connected to the free end of the first lower spring piece.

[0091] Furthermore, the pointing direction from the connection end connecting the second upper spring and the upper part 311 of the body to the free end of the second upper spring is the same as the pointing direction from the connection end connecting the second lower spring and the lower part 311 of the body to the free end of the second lower spring.

[0092] Furthermore, the direction of the connection from the end where the first upper spring is connected to the upper part 311 of the body to the free end of the first upper spring is opposite to the direction of the connection from the end where the second upper spring is connected to the upper part 311 of the body to the free end of the second upper spring.

[0093] Furthermore, the free ends of the first upper spring and the second upper spring are lower than the upper surface of the upper part 311 of the body.

[0094] Furthermore, the free ends of the first upper spring and the second upper spring are curved structures.

[0095] Furthermore, two guide structures are provided on the base plate 14, and each guide structure corresponds to the installation of an assembly nut 3.

[0096] Furthermore, the upper cover 2 and the base 1 are integrally injection molded. The junction connection area between the upper cover 1 and the base 2 is a thin-walled area c. The hinge structure formed by the thin-walled area c allows the upper cover 2 to be connected to the first side 11 of the base 1 by means of a transfer.

[0097] The junction area between the top cover 1 and the base 2 is a thin-walled area c. The top cover 2 can be rotated and opened relative to the base 1 to make bolt connections between the output electrode connecting piece and the copper busbar. After the connection is completed, the top cover is connected to the base by a snap-fit ​​connection to achieve insulation protection of the electrical connection.

[0098] The integrated design of the top cover and base significantly reduces the types of parts, the number of molds required, simplifies the assembly process, reduces manufacturing costs, and improves assembly efficiency.

[0099] Furthermore, the first side 11 and the second side 12 of the base 1 are both double-layer side plate structures including an inner side plate a and an outer side plate b;

[0100] The outer side plate b of the first side 11 and the upper cover 2 are connected by a transition, and the outer side plate b of the second side 12 is detachably connected to the upper cover 2.

[0101] The inner side plate a of the first side 11 and the inner side plate a of the second side 12 are both connected to the base fixing buckle 4.

[0102] An opening is provided on the outer side plate b of the first side 11 in the area corresponding to the base fixing buckle 4 on the inner side plate a of the first side 11.

[0103] The outer side plate b of the second side 12 has an opening in the area corresponding to the base fixing buckle 4 on the inner side plate a of the second side 12.

[0104] The base fixing buckle 4 on the inner side plate a of the first side 11 and the base fixing buckle 4 on the inner side plate a of the second side 12 are used to fix the output pole protection assembly to the external device in a buckle manner.

[0105] The base fixing buckle 4 has a protrusion. By pressing the protrusion, the hook of the base fixing buckle 4 retracts into the base, thereby separating the base from external devices such as the separator of the battery pack.

[0106] The opening of the outer side plate b is for accommodating and exposing the base fixing buckle 4 on the corresponding inner side plate a. The outer surface of the outer side plate b and the base fixing buckle 4 are relatively flat. Only the buckle of the base fixing buckle 4 protrudes and is connected to the partition buckle inside the battery pack box. This ensures that there is a relatively small gap between the left and right sides of the output electrode protection component (i.e., the first and second sides of the base) and the partition, which plays a role in limiting the left and right movement of the output electrode protection component and preventing it from swaying left and right, thus affecting the stability of the electrical connection between the copper busbar and the output electrode connecting piece, and between the output electrode connecting piece and the battery cell.

[0107] Furthermore, the base 1 has limiting blocks 15 on both the front and rear sides of its bottom for limiting the output pole protection assembly in the front and rear directions of the external device.

[0108] like Figure 4 As shown, the front and rear limiting blocks 15 of the base mainly cooperate with the battery pack separators to limit the front and rear movement of the base. Combined with the lateral limiting of the base, this allows the base to be securely connected to the battery pack separators.

[0109] See Figure 5 and Figure 6 Furthermore, the upper surface of the cover 2 is provided with a wire harness fixing groove 21.

[0110] The wire harness fixing groove 21 is used to fix the upper wire harness and to organize the wire harness in the battery pack. The existing insulating protective cover, insulating base and wire harness fixing bracket are made into a single part, which achieves electrical insulation protection while reducing the number of molds and parts, saving assembly time and component costs.

[0111] This utility model also provides a battery pack, characterized in that it includes the aforementioned output electrode protection component 9, and further includes a housing and a plurality of battery modules 5 located inside the housing;

[0112] A partition 6 is provided between the battery modules 5, and the output electrode protection component 9 is fixed to the partition 6. The assembly nut 3 is used to fix the copper busbar 8 and the output electrode connecting piece 51 of the battery module 5 in a bolt manner.

[0113] like Figure 5 As shown, the copper busbar 8 and the output terminal connecting piece 51 of the battery module 5 are connected and fixed by fastening bolts 7.

[0114] The partitions of the battery pack, such as the crossbeams of the battery pack.

[0115] In summary, the present invention has the following beneficial technical effects:

[0116] (1) The base and the top cover, two independent parts, are integrated into an integral insulating structure, realizing the integration of "base + cover", which significantly reduces the types of parts, reduces the number of molds and manufacturing costs; at the same time, the separate installation process of the top cover is eliminated, simplifying the assembly process and improving assembly efficiency.

[0117] (2) A movable assembly nut is installed inside the output pole base. This nut can be freely adjusted within a certain range. During assembly, when there is an eccentricity between the mounting hole of the output pole connecting piece and the internal thread hole of the assembly nut, the assembly nut can achieve self-alignment through slight movement, effectively avoiding bolt seizing or stripping caused by axial eccentricity. At the same time, it allows the nut to completely fit the mounting surface of the output pole connecting piece, eliminating the assembly gap caused by the fixed and non-adjustable nature of traditional insert injection-molded nuts, ensuring tight contact at the connection interface, thereby improving connection strength, preventing preload torque attenuation, and ensuring the long-term stability of the electrical connection. Since the assembly nut and the output pole connecting piece can achieve complete fit, the contact area is maximized, effectively ensuring the current conduction area, avoiding current concentration and local overheating caused by poor contact, and improving the safety and durability of the high-voltage connection.

[0118] (3) A guide groove is provided in the insulating base, and the assembled nut can slide along the guide groove. When the battery cell expands during long-term use of the battery pack, squeezing the structural components and causing them to deform, the guide groove allows the nut to move adaptively. By moving the nut in the guide groove, the base is prevented from shifting relative to the battery cell, which in turn prevents the structural components from exerting tension on the output electrode connecting piece, reducing the risk of connection failure such as breakage at the connection between the output electrode connecting piece and the battery cell.

[0119] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An output electrode protection component, characterized in that, It includes a base, a top cover, and an assembly nut. The base includes a bottom plate and a first side and a second side respectively disposed on the left and right opposite sides of the bottom plate. The bottom plate, the first side and the second side form a through mounting groove in the front and back direction of the base. The top cover is connected to the first side of the base by a conversion method and is detachably connected to the second side of the base. The top cover is disposed above the mounting groove. The base plate is provided with a guide structure that guides in the front-to-back direction, and the assembled nut is movably installed onto the base plate of the base through the guide structure.

2. The output electrode protection component as described in claim 1, characterized in that, The guiding structure includes a guide groove opened in the base plate and a left limiting platform and a right limiting platform formed at the opening of the guide groove; The assembled nut includes a limiting body that mates with the guide groove; The limiting body is provided with a positioning post with an internal threaded hole in the middle; The left side of the limiting body is provided with a left elastic component for closely abutting the left limiting platform; The right side of the limiting body is provided with a right elastic component for closely abutting the right limiting platform.

3. The output electrode protection component as described in claim 2, characterized in that, The limiting body includes a lower part, a middle part, and an upper part, with the middle part connecting the lower part and the upper part. The lower part of the main body is located in the guide groove, the left side of the upper part of the main body is placed on the upper surface of the left limiting platform, and the right side of the upper part of the main body is placed on the upper surface of the right limiting platform. The upper center of the main body is provided with a groove, which extends downward to the middle of the main body; The positioning post is located in the groove.

4. The output electrode protection component as described in claim 3, characterized in that, The left elastic component includes a first upper elastic piece connected to the upper part of the body and a first lower elastic piece connected to the lower part of the body. The first upper elastic piece and the first lower elastic piece are vertically opposite each other and extend along the guiding direction of the guide groove. The first upper spring abuts against the upper surface of the left limiting platform, and the first lower spring abuts against the lower surface of the left limiting platform to clamp the left limiting platform; The right elastic component includes a second upper spring piece connected to the upper part of the body and a second lower spring piece connected to the lower part of the body. The second upper spring piece and the second lower spring piece are vertically opposite each other and extend along the guiding direction of the guide groove. The second upper spring abuts against the upper surface of the right limiting platform, and the second lower spring abuts against the lower surface of the right limiting platform to clamp the right limiting platform.

5. The output electrode protection component as described in claim 1, characterized in that, Two guide structures are provided on the base plate, and each guide structure is equipped with one assembly nut.

6. The output electrode protection component as described in claim 1, characterized in that, The top cover and the base are integrally injection molded. The junction area between the top cover and the base is a thin-walled area. The hinge structure formed by the thin-walled area allows the top cover to be connected to the first side of the base by a transfer method.

7. The output electrode protection component as described in claim 1, characterized in that, The first and second sides of the base are both double-layer side plate structures comprising an inner side plate and an outer side plate; The outer side plate of the first side and the top cover are connected by a connecting method, and the outer side plate of the second side is detachably connected to the top cover; Both the inner side plate of the first side and the inner side plate of the second side are connected to base fixing buckles; An opening is provided on the outer side plate of the first side portion in the area corresponding to the base fixing buckle on the inner side plate of the first side portion; The outer side plate of the second side has an opening in the area corresponding to the base fixing buckle on the inner side plate of the second side; the base fixing buckle on the inner side plate of the first side and the base fixing buckle on the inner side plate of the second side are used to fix the protective component to the external device in a buckle manner.

8. The output electrode protection component as described in claim 1, characterized in that, The base has limiting blocks on both the front and rear opposite sides of its bottom, which are used to limit the output electrode protection component in the front and rear directions of the external device.

9. The output electrode protection component as described in claim 1, characterized in that, The upper surface of the cover is provided with a wire harness fixing groove.

10. A battery pack, characterized in that, The device includes an output electrode protection assembly as described in any one of claims 1-9, and further includes a housing and a plurality of battery modules located within the housing; A partition is provided between the battery modules, the output electrode protection component is fixed to the partition, and the assembly nut is used to fix the copper busbar and the output electrode connecting piece of the battery module in a bolt manner.

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