Electrical connection assembly and energy storage system

Abstract

The utility model relates to the technical field of energy storage equipment, and discloses an electrical connection assembly and an energy storage system, the electrical connection assembly comprises a connecting piece comprising a connecting part and a conductive part, the part of the connecting part located in a box body is connected with the conductive part, and the connecting surface of the connecting part and the conductive part forms a step surface, and an insulation protection piece comprising a bearing part with a through hole, the bearing part sleeves the conductive part through the through hole, and one side, close to the connecting part, of the bearing part is matched with the step surface. According to the utility model, the conductive part is provided with the insulation protection member, and the bearing part of the insulation protection member can form an isolation structure between the conductive part and the wall surface of the box body, so that the conductive part can be isolated from the wall surface of the box body, an electrical gap and a creepage gap between the conductive part and the wall surface of the box body can be improved, and the risk of short circuit of the conductive part can be effectively reduced; the step surface can limit the displacement of the insulation protection piece in the direction close to the box body, so that the position of the electrical connection assembly is more accurate and reliable after the electrical connection assembly is assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to an electrical connection component and an energy storage system. Background Art

[0002] An energy storage system refers to a system that can store energy and convert and output energy. Usually, multiple battery packs and multiple high-voltage control electric boxes are arranged in the energy storage system. The battery packs and the high-voltage control electric boxes are connected by high-voltage cables. High-voltage plugs for electrically connecting with the high-voltage cables are respectively arranged on the boxes of the battery packs and the high-voltage control electric boxes.

[0003] At present, with the continuous improvement of the layout compactness of the components in the energy storage system, the layout gap between the components inside the energy storage system is usually small, especially the components located on the box body of the component. With the continuous increase of the power demand in the energy storage system, the voltage of the existing energy storage system has reached 1500V to 2200V. In this high-voltage situation, the distance between the high-voltage plugs arranged on the box body and the non-insulated components is relatively close, and short circuits and other situations are likely to occur during the normal operation of the energy storage system, posing a safety hazard. Summary of the Utility Model

[0004] In view of this, the utility model provides an electrical connection component and an energy storage system to solve the problem of poor safety in the layout of components in the existing energy storage system.

[0005] In a first aspect, the utility model provides an electrical connection component, which is applied to a control box and / or a battery pack of an energy storage system. Both the control box and the battery pack include a box body and working components arranged inside the box body. The electrical connection component includes: a connecting piece and an insulating protection piece. The connecting piece includes a connecting part and a conductive part. The connecting part is adapted to penetrate through the box body. One end of the connecting part located outside the box body forms a connecting end for connecting with a cable. The part of the connecting part located inside the box body is connected to the conductive part. The connecting surface where the connecting part is connected to the conductive part forms a stepped surface. The conductive part is used for connecting with the working component. The insulating protection piece includes a bearing part with a perforation. The bearing part is sleeved on the conductive part through the perforation. The extending direction of the bearing part is consistent with the extending direction of the box wall surface where the connecting part is located. One side of the bearing part close to the connecting part is matched with the stepped surface.

[0006] Beneficial effects: An insulating protection member is provided on the conductive part. The insulating protection member is an insulating component. The bearing part of the insulating protection member can form an isolation structure between the conductive part and the wall surface of the box body, isolating the conductive part from the wall surface of the box body, improving the electrical clearance and creepage distance between the conductive part and the wall surface of the box body, effectively reducing the risk of short circuit of the conductive part, and improving the insulation protection performance inside the control box. In addition, the stepped surface can limit the displacement of the insulating protection member in the direction close to the box body, eliminating the need for additional limiting structures, making the position of the electrical connection component more accurate and reliable after assembly, and effectively solving the problem of poor safety in the arrangement of components in the existing energy storage system.

[0007] In an alternative embodiment, it further includes a conductive component. The conductive part is connected to the working component through the conductive component. The conductive component is assembled and connected to the wall surface of the conductive part that is connected to the stepped surface. The conductive component, the conductive part, and the stepped surface enclose a limiting groove, and the bearing part is sleeved on the part of the conductive part corresponding to the formed limiting groove.

[0008] Beneficial effects: After the insulating protection member is assembled, the bearing part can be effectively limited in the limiting groove, effectively avoiding the situation where the bearing part moves along the conductive part and falls off during the continuous vibration in the working process of the energy storage system.

[0009] In an alternative embodiment, the conductive component is in abutting cooperation with the stepped surface through the bearing part.

[0010] Beneficial effects: The insulating protection member can be fixed while the conductive component is assembled, preventing the insulating protection member from swinging or moving during the working process and affecting the insulation protection effect.

[0011] In an alternative embodiment, the insulating protection member further includes a protection part. The protection part is provided at at least a part of the edge of the bearing part and extends in a direction away from the wall surface of the box body.

[0012] Beneficial effects: The protection part of the insulating protection member can form an isolation structure on the side of the conductive part, isolating the conductive part from other components in the vicinity, improving the electrical clearance and creepage distance between the components, effectively reducing the risk of short circuit of the conductive part, and improving the insulation protection performance inside the control box and / or the battery pack.

[0013] In an alternative embodiment, the outer wall at the connection position of the bearing part and the protection part is a continuous curved surface, and the edge positions of the bearing part and the protection part are both rounded.

[0014] Beneficial effects: This form of insulating protection member can effectively avoid the situation of electrostatic corona discharge to surrounding components, improving insulation reliability. In addition, it can also prevent scratching operators during disassembly and assembly.

[0015] In an alternative embodiment, the insulating protection member is an elastic member, and the cross-sectional area of the perforation is smaller than the cross-sectional area of the conductive portion at the sleeved position; or, the insulating protection member is a non-elastic member, the cross-sectional area of the perforation is greater than or equal to the cross-sectional area of the conductive portion at the sleeved position, and the cross-sectional area of the perforation is smaller than the cross-sectional area of the connecting portion.

[0016] Advantageous effects: The insulating protection member in the form of an elastic member can be closely attached to the outer wall of the conductive portion under its own elastic force, and its position can be directly fixed through its own characteristics. The fixing method is simple and reliable. The insulating protection member in the form of a non-elastic member has a simple and reliable structure and is convenient for processing and manufacturing.

[0017] In an alternative embodiment, an elastic member is further included, and the inner wall of the perforation is in abutting cooperation with the outer wall of the conductive portion through the elastic member.

[0018] Advantageous effects: The provision of the elastic member can not only prevent the insulating protection member from moving randomly along the conductive portion, but also improve the sealing performance when the two are matched.

[0019] In an alternative embodiment, a protection portion is provided at the edge of one side of the bearing portion, or protection portions are provided at the edges of opposite sides of the bearing portion, or protection portions are provided at the edges of each side of the bearing portion.

[0020] Advantageous effects: The structural form of the insulating protection member is simple and reliable, and a safety gap can be increased when there are components on one side or both sides of the conductive portion.

[0021] In an alternative embodiment, the insulating protection member is in a plate-like structure, and the thickness range of the insulating protection member is from 0.1 mm to 5 mm.

[0022] Advantageous effects: The structure is simple, occupies less space, and is convenient for processing and manufacturing.

[0023] In a second aspect, the present utility model further provides an energy storage system, which includes: a battery pack and a control box, both of which have a box body and working components provided inside the box body; the above-mentioned electrical connection assembly, and the electrical connection assembly is provided on the wall surface of the box body of at least one of the battery pack and the control box, and the electrical connection assembly is connected to the corresponding working component. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1A three-dimensional schematic diagram after assembly of an electrical connection component according to an embodiment of the present utility model;

[0026] Figure 2 is Figure 1 a sectional view of the electrical connection component shown in a side view state;

[0027] Figure 3 is Figure 2 a bottom view of the electrical connection component shown;

[0028] Figure 4 is Figure 2 a schematic diagram of the electrical connection component shown without installing an insulation protection part;

[0029] Figure 5 an insulation protection part of a form of the electrical connection component according to an embodiment of the present application;

[0030] Figure 6 a second form of insulation protection part of the electrical connection component according to an embodiment of the present application;

[0031] Figure 7 a third form of insulation protection part of the electrical connection component according to an embodiment of the present application;

[0032] Figure 8 a fourth form of insulation protection part of the electrical connection component according to an embodiment of the present application;

[0033] Figure 9 a three-dimensional schematic diagram of an energy storage system according to an embodiment of the present utility model;

[0034] Figure 10 is Figure 9 an enlarged schematic diagram at position A of the energy storage system shown;

[0035] Figure 11 is Figure 9 a three-dimensional schematic diagram of the control box of the energy storage system shown.

[0036] Explanation of reference numerals:

[0037] 1. Connecting piece; 101. Connecting part; 1011. Connecting end; 1012. Step surface; 102. Conductive part; 103. Connecting fastener;

[0038] 2. Insulation protection part; 201. Carrying part; 2011. Perforation; 202. Protection part;

[0039] 3. Conductive part; 301. Limiting groove; 302. Conductive fastener;

[0040] 4. Box body; 5. Working component; 6. Battery pack; 7. Control box; 8. Wiring harness. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] The following will describe the embodiments of the present utility model in conjunction with Figures 1 to 11 , the embodiments of the present utility model will be described.

[0043] According to an embodiment of the present utility model, on the one hand, an electrical connection assembly is provided, which is applied to a control box 7 and / or a battery pack 6 of an energy storage system. Both the control box 7 and the battery pack 6 include a box body 4 and working components 5 arranged inside the box body 4. The electrical connection assembly includes: a connecting member 1 and an insulating protection member 2. The connecting member 1 includes a connecting portion 101 and a conductive portion 102. The connecting portion 101 is adapted to penetrate through the box body 4. One end of the connecting portion 101 located outside the box body 4 forms a connecting end 1011 for connecting with a cable. The portion of the connecting portion 101 located inside the box body 4 is connected to the conductive portion 102. The connecting surface where the connecting portion 101 is connected to the conductive portion 102 forms a stepped surface 1012. The conductive portion 102 is used to connect with the working component 5. The insulating protection member 2 includes a bearing portion 201 having a through hole 2011. The bearing portion 201 is sleeved on the conductive portion 102 through the through hole 2011. The extending direction of the bearing portion 201 is the same as the extending direction of the wall surface of the box body 4 where the connecting portion 101 is located. One side of the bearing portion 201 close to the connecting portion 101 cooperates with the stepped surface 1012.

[0044] By applying the electrical connection assembly of this embodiment, an insulating protection member 2 is provided on the conductive portion 102. The insulating protection member 2 is an insulating member. The bearing portion 201 of the insulating protection member 2 can form an isolation structure between the conductive portion 102 and the wall surface of the box body 4, which can isolate the conductive portion 102 from the wall surface of the box body 4, improve the electrical clearance and creepage distance between the conductive portion 102 and the wall surface of the box body 4, effectively reduce the risk of short circuit of the conductive portion 102, and improve the insulation protection performance inside the control box 7. In addition, the stepped surface 1012 can limit the displacement of the insulating protection member 2 in the direction close to the box body 4 without using an additional limiting structure for limiting, making the position of the electrical connection assembly more accurate and reliable after assembly, and effectively solving the problem of poor safety in the arrangement of components in the existing energy storage system.

[0045] Specifically, the bearing part 201 extends along the wall surface of the box body 4, which can increase the electrical clearance and creepage distance between the conductive part 102 and the box body 4; the protection part 202 extends along the direction away from the wall surface of the box body 4, which can increase the electrical clearance and creepage distance between the current conductive part 102 and the conductive part 102 of the adjacent connecting part 1 and the metal bracket installed on the wall surface of the box body 4.

[0046] Furthermore, since the insulation protection part 2 of this embodiment is an integral structure, during assembly, the insulation protection part 2 can be directly installed on the connecting part 1. With fewer assembly steps, quick and simple installation can be achieved.

[0047] In addition, the insulation protection part 2 is an insulating part, and no specific limitation is imposed on the specific material of the insulation protection part 2. The materials of the insulation protection part 2 include but are not limited to PC, PC+GF fiberglass, PP+GF, PA66, PA66+Gf, PVC, PET, PET+Gf, PBT, PBT+GF, PC+ABS, mica plate, mica, rubber type, silica gel type. One or more of the above materials can be used to form the insulation protection part 2 according to actual usage requirements.

[0048] In a possible implementation manner, the electrical connection assembly further includes a conductive part 3. The conductive part 102 is connected to the working part 5 through the conductive part 3. The conductive part 3, the conductive part 102, and the step surface 1012 enclose a limiting groove 301. The bearing part 201 is sleeved on the part of the conductive part 102 corresponding to form the limiting groove 301. The conductive part 3 and the step surface 1012 can limit the movement of the bearing part 201 along the extending direction of the through hole 2011. After the insulation protection part 2 is assembled, the bearing part 201 can be effectively limited in the limiting groove 301, which can effectively avoid the situation that the bearing part 201 moves along the conductive part 102 and falls off during the continuous vibration generated during the operation of the energy storage system.

[0049] It can be understood that as an alternative implementation manner, the conductive part 3 can also be assembled and connected to the end surface of the conductive part 102 away from the step surface 1012.

[0050] Specifically, the height of the through hole 2011 along the vertical direction is F, the width along the horizontal direction is E, the width of the conductive part 102 along the horizontal direction is C, and the diameter of the connecting part 101 is D. The above dimensions satisfy the relationship of D>E≥C; the thickness of the conductive part 102 along the vertical direction is H, and the thickness of the part of the conductive part 3 used to connect with the conductive part 102 along the vertical direction is T. The above dimensions satisfy the relationship of T+H≥F≥H and / or D>F≥H.

[0051] It should be noted that the above dimension relationships are the dimension relationships presented after assembly.

[0052] Furthermore, there is no limitation on the movable situation of the bearing part 201 in the limit groove 301. It can be that the width of the limit groove 301 along the longitudinal direction is greater than the thickness of the bearing part 201 along the longitudinal direction. In this case, the bearing part 201 can move in the limit groove 301. It can also be that the width of the limit groove 301 along the longitudinal direction is equal to the thickness of the bearing part 201 along the longitudinal direction. In this case, the bearing part 201 cannot move.

[0053] Among them, it should be noted that the transverse direction refers to Figure 1 the "transverse" direction indicated by the arrow in Figure 1 the "longitudinal" direction indicated by the arrow in Figure 1 the "vertical" direction indicated by the arrow in

[0054] In a possible implementation manner, the conductive member 3 is in abutting fit with the step surface 1012 through the bearing part 201. When the conductive member 3 is assembled, the insulating protection member 2 can be fixed at the same time, preventing the insulating protection member 2 from swinging or moving during operation and affecting the insulating protection effect.

[0055] Among them, there is no strict limitation on the relationship between the width of the limit groove 301 along the longitudinal direction and the thickness of the bearing part 201 along the longitudinal direction. When the bearing part 201 is elastic and can be compressed, the width of the limit groove 301 along the longitudinal direction is less than or equal to the thickness of the bearing part 201 along the longitudinal direction. When the bearing part 201 is difficult to be compressed, at this time, the width of the limit groove 301 along the longitudinal direction is equal to the thickness of the bearing part 201 along the longitudinal direction.

[0056] In a possible implementation manner, the insulating protection member 2 further includes a protection part 202. The protection part 202 is provided at at least a part of the edge of the bearing part 201. The protection part 202 extends along the direction away from the wall surface of the box body 4. The protection part 202 of the insulating protection member 2 can form an isolation structure at the side of the conductive part 102, isolating the conductive part 102 from the other components in the vicinity, increasing the electrical clearance and creepage distance between the components, effectively reducing the risk of short circuit of the conductive part 102, and improving the insulation protection performance inside the control box 7.

[0057] Among them, the other components in the vicinity include: box body fasteners, metal brackets, and adjacent connectors 1.

[0058] It should be noted that there is no limitation on the forming method of the insulating protection member 2 in this embodiment, including but not limited to die cutting, bending, extrusion, hot pressing, thermoforming, injection molding, etc. One or more methods can be used to manufacture the insulating protection member 2, and it can be flexibly selected according to requirements.

[0059] In a possible implementation manner, as Figure 1As shown, the outer wall of the connection position between the bearing part 201 and the protection part 202 is a continuous curved surface, and the edges of both the bearing part 201 and the protection part 202 are rounded. In this form, the insulating protection part 2 can effectively avoid the tip discharge of static electricity to surrounding components, improve the insulation reliability. In addition, it can also prevent scratching the operator during disassembly and assembly.

[0060] In a possible implementation manner, the insulating protection part 2 is an elastic part, and the cross-sectional area of the through hole 2011 is smaller than the cross-sectional area of the conductive part 102 at the sleeved position. In this form of insulating protection part 2, after being assembled to the conductive part 102 through the through hole 2011, it can be closely attached to the outer wall of the conductive part 102 under the action of its own elastic force, and its position can be directly fixed through its own characteristics, and the fixing method is simple and reliable.

[0061] In a possible implementation manner, the insulating protection part 2 is a non-elastic part, the cross-sectional area of the through hole 2011 is greater than or equal to the cross-sectional area of the conductive part 102 at the sleeved position, and the cross-sectional area of the through hole 2011 is smaller than the cross-sectional area of the connecting part 101, and the structure is simple and reliable.

[0062] In a possible implementation manner, an elastic component is further included, and the inner wall of the through hole 2011 is in abutting fit with the outer wall of the conductive part 102 through the elastic part. Setting the elastic component can not only prevent the insulating protection part 2 from moving randomly along the conductive part 102, but also improve the sealing performance when the two are matched.

[0063] Specifically, since the thickness of the insulating protection part 2 is relatively thin, in order to cooperate with the through hole 2011 more reliably, the elastic component is provided with a groove on the outer wall close to the through hole 2011, and the elastic component cooperates with the through hole 2011 through the groove.

[0064] In a possible implementation manner, as Figure 6 and Figure 7 shown, a protection part 202 is provided at the edge of one side of the bearing part 201, or protection parts 202 are provided at the opposite edges of the bearing part 201. The structural form of the insulating protection part 2 is simple and reliable, and a safety gap can be increased when there are components on one side or both sides of the conductive part 102.

[0065] It can be understood that as an alternative implementation manner, the bearing part 201 can also be provided with protection parts 202 at adjacent multi-side edges, and the specific setting position of the protection part 202 can be flexibly selected according to requirements.

[0066] In a possible implementation manner, as Figure 8 shown, protection parts 202 are provided at the edges of each side of the connecting part 101. The structural form of the insulating protection part 2 is simple and reliable, and the safety gap with components can be improved in all directions on the side of the conductive part 102.

[0067] In a possible implementation, preferably, the insulation protection member 2 has a plate-like structure with a thickness ranging from 0.1 mm to 5 mm. It has a simple structure and occupies less space, facilitating processing and manufacturing.

[0068] Specifically, the thickness of the insulation protection member 2 can be 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, etc., as long as it is within the range of 0.1 mm to 5 mm.

[0069] In a possible implementation, it further includes a connecting fastener 103 and a conductive fastener 302. Through holes are provided on both the connecting portion 101 and the box body 4. The connecting portion 101 is assembled and connected to the box body 4 through the connecting fastener 103. Through holes are provided on both the conductive member 3 and the conductive portion 102. The conductive member 3 is assembled and connected to the conductive portion 102 through the conductive fastener 302.

[0070] Hereinafter, the assembly process of the electrical connection assembly of this embodiment will be described:

[0071] Fix the connecting member 1 on the surface of the box body 4 through the connecting fastener 103; sleeved the insulation protection member 2 to a preset position of the conductive portion 102 through its own through hole 2011, and push the insulation protection member 2 to abut against the stepped surface 1012; use the conductive fastener 302 to assemble and connect the conductive member 3 to the conductive portion 102.

[0072] The overall assembly method is simple and efficient, consuming less man-hours.

[0073] According to an embodiment of the present invention, on the other hand, a energy storage system is provided, which includes: a battery pack 6, a control box 7, and the above-mentioned electrical connection assembly. Both the battery pack 6 and the control box 7 have a box body 4 and working components 5 arranged inside the box body 4. The electrical connection assembly is arranged on the wall surface of the box body 4 of at least one of the battery pack 6 and the control box 7, and the electrical connection assembly is connected to the corresponding working component 5.

[0074] Among them, the battery pack can be a battery pack. The working component 5 in the battery pack 6 can be a module formed by multiple single cells, or a fuse and base assembly, or a relay, or a current sensor, etc. The working component 5 of the control box 7 can be a circuit breaker, or a fuse and base assembly, or a relay, or a current sensor, etc.

[0075] Among them, as Figure 10 shown, the electrical connection assembly is connected to another battery pack 6 or control box 7 through a wire harness 8.

[0076] In this embodiment, it further includes an energy storage box. The inside of the carrier box has an installation space, and both the battery pack 6 and the control box 7 are installed in the installation space of the carrier box.

[0077] Although embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An electrical connection assembly, applied to a control box (7) and / or a battery pack (6) of an energy storage system, wherein the control box (7) and the battery pack (6) both comprise a box (4) and a working component (5) arranged inside the box (4), characterized in that: The electrical connection kit includes: A connecting piece (1), comprising a connecting portion (101) and a conductive portion (102), wherein the connecting portion (101) is adapted to be inserted into the box (4), an end of the connecting portion (101) located outside the box (4) forms a connecting end (1011) for connecting to a cable, a portion of the connecting portion (101) located inside the box (4) is connected to the conductive portion (102), a connecting surface of the connecting portion (101) and the conductive portion (102) forms a step surface (1012), and the conductive portion (102) is used to connect to the working component (5); The insulating protection part (2) comprises a bearing part (201) having a through hole (2011), the bearing part (201) being sleeved on the conductive part (102) through the through hole (2011), the extension direction of the bearing part (201) being consistent with the extension direction of the wall surface of the box body (4) where the connecting part (101) is located, and the side of the bearing part (201) close to the connecting part (101) is matched with the step surface (1012).

2. The electrical connection assembly according to claim 1, characterized in that: It also comprises a conductive part (3), the conductive part (102) is connected to the working part (5) via the conductive part (3), the conductive part (3), the conductive part (102) and the step surface (1012) together form a limiting groove (301), and the bearing part (201) is sleeved on a portion of the conductive part (102) corresponding to the limiting groove (301).

3. The electrical connection assembly according to claim 2, characterized in that: The conductive member (3) is in abutment with the step surface (1012) via the bearing portion (201).

4. The electrical connection assembly according to any one of claims 1 to 3, characterized in that: The insulating protection member (2) further comprises a protection portion (202), the protection portion (202) being provided at at least a portion of the edge of the bearing portion (201), and the protection portion (202) extending in a direction away from the wall surface of the box body (4).

5. The electrical connection assembly according to claim 4, characterized in that: The outer wall at the connection position between the bearing portion (201) and the protection portion (202) is a continuous curved surface, and the edges of the bearing portion (201) and the protection portion (202) are both rounded.

6. The electrical connection assembly according to any one of claims 1 to 3, characterized in that: The insulating protection member (2) is an elastic member, and the cross-sectional area of ​​the through hole (2011) is smaller than the cross-sectional area of ​​the conductive part (102) at the sleeved position; Alternatively, the insulating protection member (2) is a non-elastic member, the cross-sectional area of ​​the through hole (2011) is greater than or equal to the cross-sectional area of ​​the conductive portion (102) at the sleeved position, and the cross-sectional area of ​​the through hole (2011) is smaller than the cross-sectional area of ​​the connecting portion (101).

7. The electrical connection assembly according to any one of claims 1 to 3, characterized in that: It also includes an elastic component, and the inner wall of the through hole (2011) is abutted and matched with the outer wall of the conductive part (102) through the elastic component.

8. The electrical connection assembly according to claim 4, characterized in that: The protection portion (202) is provided at an edge of one side of the bearing portion (201), or the protection portions (202) are provided at two opposite edges of the bearing portion (201), or the protection portions (202) are provided at each edge of the bearing portion (201).

9. The electrical connection assembly according to any one of claims 1 to 3, characterized in that: The insulating protection member (2) is a plate-shaped structure, and the thickness of the insulating protection member (2) ranges from 0.1 mm to 5 mm.

10. An energy storage system, characterized in that: include: A battery pack (6) and a control box (7), both of which have a box (4) and a working component (5) arranged inside the box (4); The electrical connection assembly according to any one of claims 1 to 9, wherein the wall surface of the box (4) of at least one of the battery pack (6) and the control box (7) is provided with the electrical connection assembly, and the electrical connection assembly is connected to the corresponding working part (5).

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