Electrical connection, support structure and battery pack

Abstract

This utility model relates to the field of battery technology, providing an electrical connector, a support structure, and a battery pack. The electrical connector includes a main body, a first connecting portion, and a second connecting portion. The first and second connecting portions are spaced apart along a first direction. The first connecting portion is configured to connect to a first electrode of a single battery cell. The second connecting portion is configured to connect to a second electrode of another single battery cell. The main body is connected between the first and second connecting portions. The main body includes a bent section for offsetting the first and second connecting portions along a second direction. The first and second directions are angled. The first and second electrodes have opposite polarities. This optimizes the layout of the battery management system (BMS), making the BMS layout more flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an electrical connector, a support structure, and a battery pack. Background Technology

[0002] In related technologies, adjacent battery cells in a battery pack are typically connected in series using aluminum busbars. When connected in series with aluminum busbars, the positive terminal of one battery cell and the negative terminal of another are located on the same side, with the aluminum busbar spanning the thickness of the battery cell and providing electrical connection between adjacent cells. If the battery pack contains an even number of battery cells, the positive and negative output terminals must be arranged on the same side. If the battery pack contains an odd number of battery cells, the positive and negative output terminals must be arranged on opposite sides. This limits the layout options for the Battery Management System (BMS). Utility Model Content

[0003] The embodiments of this utility model provide an electrical connector, a support structure, and a battery pack. The electrical connector enables electrical connection between two adjacent battery cells and allows adjustment of the arrangement strategy of individual battery cells so that the output positive and output negative terminals of the battery pack can be adaptively adjusted.

[0004] In a first aspect, embodiments of the present invention provide an electrical connector, comprising:

[0005] A first connecting portion and a second connecting portion are provided at intervals along a first direction. The first connecting portion is configured to connect to the first pole of a single cell, and the second connecting portion is configured to connect to the second pole of another single cell.

[0006] The main body is connected between the first connecting part and the second connecting part, and the main body includes a bending section for offsetting the first connecting part and the second connecting part along a second direction;

[0007] Wherein, the first direction and the second direction are set at an angle, and the polarities of the first pole and the second pole are opposite.

[0008] In one embodiment, the main body further includes a buffer section that arches along a third direction, wherein the third direction is angled to the first direction and the third direction is angled to the second direction.

[0009] In one embodiment, the buffer section arches away from the individual battery cell.

[0010] In one embodiment, a pressure relief hole is formed on the main body, and the buffer section is located in the area where the pressure relief hole is located.

[0011] In one embodiment, the thickness of the main body is D1, and the thickness of the first connecting part is D2, satisfying: 60%D1≤D2≤70%D1.

[0012] In one embodiment, the following condition is satisfied: 0.5 mm ≤ D2 ≤ 1.6 mm.

[0013] In one embodiment, the thickness of the main body is D1, and the thickness of the second connecting part is D3, satisfying: 60%D1≤D3≤70%D1.

[0014] In one embodiment, the following condition is satisfied: 0.5 mm ≤ D3 ≤ 1.6 mm.

[0015] Secondly, embodiments of this utility model provide a support structure, comprising:

[0016] Frame;

[0017] As mentioned above, electrical connectors;

[0018] The electrical connector is installed on the frame.

[0019] In one embodiment, at least two spaced-apart limiting members are connected to the frame, and the electrical connector is located between two adjacent limiting members.

[0020] In one embodiment, the electrical connector and the limiting member are clearance-fitted, and the distance between them is D4, which satisfies: 0.15 mm ≤ D4 ≤ 0.3 mm.

[0021] In one embodiment, a snap-fit ​​connector is connected to the frame, and the snap-fit ​​connector is connected to the electrical connector.

[0022] In one embodiment, the snap-fit ​​component includes:

[0023] The base is connected to the frame.

[0024] The stop portion is angularly connected to the side of the base away from the frame.

[0025] The stop portion abuts against the side of the electrical connector away from the frame.

[0026] In one embodiment, along the first direction, the width of the connection area between the stop and the electrical connector is D5, satisfying: 0.6 mm ≤ D5 ≤ 0.9 mm.

[0027] In one embodiment, along the second direction, the length of the connection area between the stop and the electrical connector is D6, satisfying: 2 mm ≤ D5 ≤ 5 mm.

[0028] Secondly, embodiments of the present invention provide a battery pack, including the bracket structure as described above.

[0029] The beneficial effects of the embodiments of this utility model are as follows:

[0030] In embodiments of this invention, a first connecting part connects to the first pole of one individual battery cell, and a second connecting part connects to the second pole of another individual battery cell, thereby achieving series connection of two adjacent individual battery cells. Since the first connecting part and the second connecting part are spaced apart in the first direction and staggered in the second direction, bridging of two adjacent individual battery cells can be achieved. When the battery pack has an even number of individual battery cells, using this electrical connector between a pair of adjacent individual battery cells allows the positive and negative output terminals of the battery pack to be arranged on opposite sides. When the battery pack has an odd number of individual battery cells, using this electrical connector between a pair of adjacent individual battery cells allows the positive and negative output terminals of the battery pack to be arranged on the same side. This optimizes the BMS layout, making it more flexible and convenient. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the electrical connector provided in an embodiment of this utility model;

[0033] Figure 2 This is a schematic diagram of the support structure provided in an embodiment of the present invention;

[0034] Figure 3 This is an exploded view of the support structure provided in an embodiment of this utility model;

[0035] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Electrical connector; 11. First connecting part; 12. Second connecting part; 13. Main body; 131. Bending section; 132. Buffer section; 133. Pressure relief hole;

[0038] 2. Frame; 21. Limiting component; 22. Connecting component; 221. Base; 222. Stop. Detailed Implementation

[0039] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0040] like Figure 1 As shown, this application embodiment provides an electrical connector 1. The electrical connector 1 includes a main body 13, a first connecting portion 11, and a second connecting portion 12. The first connecting portion 11 and the second connecting portion 12 are spaced apart along a first direction. The first connecting portion 11 is configured to connect to a first electrode of a single battery cell. The second connecting portion 12 is configured to connect to a second electrode of another single battery cell. The main body 13 is connected between the first connecting portion 11 and the second connecting portion 12. The main body 13 includes a bent section 131 for offsetting the first connecting portion 11 and the second connecting portion 12 along a second direction. The first direction and the second direction are at an angle. The first electrode and the second electrode have opposite polarities.

[0041] In this embodiment, a first terminal of one individual battery cell is connected via a first connecting part 11, and a second connecting part 12 is connected to the second terminal of another individual battery cell, thereby achieving series connection of two adjacent individual battery cells. Since the first connecting part 11 and the second connecting part 12 are spaced apart in the first direction and staggered in the second direction, bridging of two adjacent individual battery cells can be achieved. When the battery pack has an even number of individual battery cells, the electrical connection 1 is used between a pair of adjacent individual battery cells to achieve electrical connection, allowing the positive and negative output terminals of the battery pack to be arranged on opposite sides (diagonally distributed). When the battery pack has an odd number of individual battery cells, the electrical connection 1 is used between a pair of adjacent individual battery cells to achieve electrical connection, allowing the positive and negative output terminals of the battery pack to be arranged on the same side. This optimizes the BMS layout, making the BMS layout more flexible and convenient.

[0042] Understandably, the bending section 131 allows for the staggered arrangement of the first connecting portion 11 and the second connecting portion 12 in the second direction. This enables the alteration of the layout of two adjacent battery cells when bridging them using the electrical connector 1, thus achieving a series polarity reversal. For example, it allows the arrangement of the two adjacent battery cells—from positive and negative terminals side-by-side to positive and negative terminals side-by-side—to change the arrangement of the battery pack's output positive and negative terminals.

[0043] It should be noted that the bending segment 131 bends within the plane containing the first and second directions. The bending segment 131 can be configured as an arc shape, an elliptical arc shape, or a polyline shape with an included angle.

[0044] Electrical connector 1 can be a conductive structure such as aluminum busbar or copper busbar, and the material of electrical connector 1 can be selected based on the actual use.

[0045] The first connecting part 11, the second connecting part 12 and the main body part 13 are integrally formed to ensure the connection strength of the electrical connector 1 and reduce the molding difficulty of the electrical connector 1.

[0046] In some embodiments, the first direction and the second direction are set at an acute angle. Alternatively, the first direction and the second direction are set at an obtuse angle. Or, the first direction and the second direction are perpendicular. For example, the first direction is the length direction of a single cell, and the second direction is the thickness direction of a single cell.

[0047] In some embodiments, the first electrode is the positive electrode of the individual battery cell, and the second electrode is the negative electrode of the individual battery cell. Alternatively, the first electrode is the negative electrode of the individual battery cell, and the second electrode is the positive electrode of the individual battery cell.

[0048] Please continue reading. Figure 1 In some embodiments, the main body 13 further includes a buffer section 132 that arches along a third direction. The third direction is angled relative to the first direction, and the third direction is angled relative to the second direction.

[0049] It is understandable that providing a buffer section 132 on the main body 13 allows the electrical connector 1 to adapt to the expansion of the individual battery cell. When the individual battery cell expands after long-term charging and discharging, the arched buffer section 132 can deform to elongate the buffer section 132, thereby enabling it to adapt to the expansion of the individual battery cell.

[0050] It should be noted that the buffer section 132 can be either upwardly arched or downwardly arched. When the buffer section 132 is upwardly arched, the expansion of a single battery cell can lower the height of the upward arch of the buffer section 132, thereby increasing the length of the buffer section 132 to accommodate the expansion of the single battery cell. When the buffer section 132 is downwardly arched, the expansion of a single battery cell can raise the height of the downward arch of the buffer section 132, thereby increasing the length of the buffer section 132 to accommodate the expansion of the single battery cell.

[0051] In some embodiments, the buffer segment 132 is configured as an arc shape, an elliptical arc shape, or the like. The buffer segment 132 can also be configured as a polyline shape with an included angle.

[0052] In some embodiments, the third direction is set at an acute angle to the first direction. Alternatively, the third direction is set at an obtuse angle to the first direction. Alternatively, the third direction is perpendicular to the first direction.

[0053] In some embodiments, the third direction is set at an acute angle to the second direction. Alternatively, the third direction is set at an obtuse angle to the second direction. Alternatively, the third direction is perpendicular to the second direction.

[0054] For example, the first direction is the length direction of a single cell, the second direction is the thickness direction of a single cell, and the third direction is the height direction of a single cell.

[0055] Please continue reading. Figure 1 In some embodiments, the buffer section 132 arches away from the individual battery cell.

[0056] Understandably, since the electrical connector 1 is mounted on the plastic bracket, the buffer section 132 arches away from the individual battery cell so that it does not occupy the space of the plastic bracket located below. Since the plastic bracket has a certain height, the upward arch of the buffer section 132 will not exceed the top position of the plastic bracket, so the buffer section 132 will not interfere with the installation of the cover.

[0057] Please continue reading. Figure 1 In some embodiments, a pressure relief hole 133 is formed on the main body 13. A buffer section 132 is located in the area where the pressure relief hole 133 is located.

[0058] Understandably, an explosion-proof valve is installed on the individual battery cell, and the position and shape of the pressure relief hole 133 are adapted to the explosion-proof valve so that gas can be discharged from the explosion-proof valve and the pressure relief hole 133. The buffer section 132 is located in the area where the pressure relief hole 133 is located, so that the buffer section 132 is located at the position of minimum cross-sectional area of ​​the main body 13, making it easier for the buffer section 132 to deform to adapt to the expansion of the individual battery cell.

[0059] like Figure 1 As shown, buffer sections 132 are formed on both sides of the pressure relief hole 133 on the main body 13.

[0060] In some embodiments, the cross-sectional area of ​​the main body 13 in the region where the pressure relief hole 133 is located is 25 square millimeters to ensure that the electrical connector 1 meets the requirement of continuous overcurrent of 100A (amp).

[0061] In some embodiments, the thickness of the main body 13 is D1. The thickness of the first connecting portion 11 is D2, satisfying: 60% D1 ≤ D2 ≤ 70% D1.

[0062] It is understandable that the first connecting part 11 is laser-welded to the first electrode of the single cell. In order to meet the requirements of laser welding and strength, the thickness D2 of the first connecting part 11 needs to be limited. Based on the thickness D2 of the first connecting part 11 and the relationship between D1 and D2, the thickness D1 of the main body 13 can be selected so that the thickness D1 of the main body 13 also meets the strength requirements.

[0063] If the thickness D2 of the first connecting part 11 is less than 60% of D1, then the thickness D1 of the main body part 13 is too large. On the one hand, this will increase the material consumption of the main body part 13, thereby increasing the cost and weight. On the other hand, the main body part 13 may occupy more height space due to its excessive thickness, thus affecting the installation of the box cover.

[0064] If the thickness D2 of the first connecting part 11 is greater than 70% of D1, then the thickness D1 of the main body part 13 is too small, which will cause the main body part 13 to have insufficient strength or insufficient flow capacity.

[0065] In some embodiments, the thickness D2 of the first connecting portion 11 is set to 60%D1, 65%D1, 70%D1, or any value between the two.

[0066] In some embodiments, the following condition is satisfied: 0.5 mm ≤ D2 ≤ 1.6 mm.

[0067] It is understandable that the thickness D2 of the first connecting portion 11 is set within the range of 0.5 mm to 1.6 mm to ensure that the first connecting portion 11 meets the strength requirements and laser welding requirements. If the thickness D2 of the first connecting portion 11 is less than 0.5 mm, the strength of the first connecting portion 11 will be insufficient. If the thickness D2 of the first connecting portion 11 is greater than 1.6 mm, it is easy to cause insufficient penetration or incomplete weld penetration during laser welding, making the weld strength unable to meet the usage requirements.

[0068] In some embodiments, the thickness D2 of the first connecting portion 11 is set to 0.5 mm, 1 mm, 1.6 mm, or any value between the two.

[0069] In some embodiments, the thickness D2 of the first connecting portion 11 is set to 1.5 mm, and the thickness D1 of the main body portion 13 is set to 2.5 mm.

[0070] In some embodiments, the width and length of the first connecting portion 11 are set to 13.4 mm and 30.5 mm, respectively.

[0071] In some embodiments, the thickness of the main body 13 is D1. The thickness of the second connecting portion 12 is D3, satisfying: 60% D1 ≤ D3 ≤ 70% D1.

[0072] It is understandable that the second connecting part 12 is laser-welded to the second electrode of the single cell. To meet the requirements of laser welding and strength, the thickness D3 of the second connecting part 12 needs to be limited. Based on the thickness D3 of the second connecting part 12 and the relationship between D1 and D3, the thickness D1 of the main body 13 can be selected so that the thickness D1 of the main body 13 also meets the strength requirements.

[0073] If the thickness D3 of the second connecting part 12 is less than 60% of D1, then the thickness D1 of the main body part 13 is too large. On the one hand, this will increase the material consumption of the main body part 13, thereby increasing the cost and weight. On the other hand, the main body part 13 may occupy more height space due to its excessive thickness, thus affecting the installation of the box cover.

[0074] If the thickness D3 of the second connecting part 12 is greater than 70% of D1, then the thickness D1 of the main body part 13 is too small, which will cause the main body part 13 to have insufficient strength or insufficient flow capacity.

[0075] In some embodiments, the thickness D3 of the second connecting portion 12 is set to 60%D1, 65%D1, 70%D1, or any value between the two.

[0076] In some embodiments, the following condition is satisfied: 0.5 mm ≤ D3 ≤ 1.6 mm.

[0077] It is understandable that the thickness D3 of the second connecting portion 12 is set within the range of 0.5 mm to 1.6 mm to ensure that the second connecting portion 12 meets the strength requirements and laser welding requirements. If the thickness D3 of the second connecting portion 12 is less than 0.5 mm, the strength of the second connecting portion 12 will be insufficient. If the thickness D3 of the second connecting portion 12 is greater than 1.6 mm, it is easy to cause insufficient penetration or incomplete weld penetration during laser welding, making the weld strength unable to meet the usage requirements.

[0078] In some embodiments, the thickness D3 of the second connecting portion 12 is set to 0.5 mm, 1 mm, 1.6 mm, or any value between the two.

[0079] In some embodiments, the thickness D3 of the second connecting portion 12 is set to 1.5 mm, and the thickness D1 of the main body portion 13 is set to 2.5 mm.

[0080] In some embodiments, the width and length of the second connecting portion 12 are set to 13.4 mm and 30.5 mm, respectively.

[0081] like Figures 2 to 4 As shown in the figure, this application embodiment also provides a support structure. The support structure includes a frame 2 and an electrical connector 1 as described above. The electrical connector 1 is mounted on the frame 2.

[0082] In this embodiment, a first terminal of one individual battery cell is connected via a first connecting part 11, and a second connecting part 12 is connected to the second terminal of another individual battery cell, thereby achieving series connection of two adjacent individual battery cells. Since the first connecting part 11 and the second connecting part 12 are spaced apart in the first direction and staggered in the second direction, bridging of two adjacent individual battery cells can be achieved. When the battery pack has an even number of individual battery cells, the electrical connection 1 is used between a pair of adjacent individual battery cells to achieve electrical connection, allowing the positive and negative output terminals of the battery pack to be arranged on opposite sides. When the battery pack has an odd number of individual battery cells, the electrical connection 1 is used between a pair of adjacent individual battery cells to achieve electrical connection, allowing the positive and negative output terminals of the battery pack to be arranged on the same side. This optimizes the BMS layout, making the BMS layout more flexible and convenient.

[0083] In some embodiments, the frame 2 is a plastic support. For example, the support is made of PC (polycarbonate) + ABS (thermoplastic polymer) material. The frame 2 can be used to mount the circuit board of the BMS.

[0084] In some embodiments, the frame 2 is also equipped with series aluminum busbars, positive output aluminum busbars, negative output aluminum busbars, etc.

[0085] like Figure 3 As shown, in some embodiments, at least two spaced-apart limiters 21 are connected to the frame 2, and the electrical connector 1 is located between two adjacent limiters 21.

[0086] It is understandable that by placing the electrical connector 1 between two adjacent limiting members 21, the limiting members 21 can be used to limit and fix the electrical connector 1, so that the electrical connector 1 will not move relative to the first direction and the second direction after it is installed on the frame 2, thus ensuring the installation accuracy of the electrical connector 1.

[0087] It should be noted that the shapes of the limiting members 21 located on opposite sides of the electrical connector 1 are adapted to the shape of the electrical connector 1.

[0088] In some embodiments, the limiting member 21 has a certain height so that the electrical connector 1 can be fully engaged between two adjacent limiting members 21.

[0089] In some embodiments, the limiting member 21 includes a body portion and a reinforcing rib disposed on the body portion.

[0090] In some embodiments, the limiting member 21 is integrally formed on the side of the frame 2 away from the individual battery cell. For example, the limiting member 21 is integrally formed on the upper surface of the frame 2.

[0091] In some embodiments, the electrical connector 1 and the limiting member 21 are clearance-fitted, and the distance between them is D4, satisfying: 0.15 mm ≤ D4 ≤ 0.3 mm.

[0092] Understandably, the clearance fit between the electrical connector 1 and the limiting member 21 is designed to facilitate the rapid assembly of the electrical connector 1 and ensure its installation accuracy and reliability. If the gap between the electrical connector 1 and the limiting member 21 is less than 0.15 mm, it will increase the difficulty of installing the electrical connector 1, and may even prevent the electrical connector 1 from being installed between two adjacent limiting members 21 due to manufacturing tolerances. If the gap between the electrical connector 1 and the limiting member 21 is greater than 0.3 mm, the electrical connector 1 will be relatively loose after installation, resulting in insufficient assembly accuracy.

[0093] For example, the distance D4 between the electrical connector 1 and the limiting member 21 is set to 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, or any value between the two.

[0094] like Figure 3 As shown, in some embodiments, a snap-fit ​​connector 22 is connected to the frame 2, and the snap-fit ​​connector 22 is connected to the electrical connector 1.

[0095] It is understandable that by setting a snap-fit ​​22 on the frame 2 to connect the electrical connector 1, the reliability of the installation of the electrical connector 1 is further improved, and the electrical connector 1 is prevented from falling off the frame 2.

[0096] In some embodiments, the snap-fit ​​22 is integrally formed on the side of the frame 2 away from the individual battery cell. For example, the snap-fit ​​22 is integrally formed on the upper surface of the frame 2.

[0097] In some embodiments, at least two snap-fit ​​connectors 22 may be provided. Snap-fit ​​connectors 22 may be used in pairs. The stop portion 222 of one snap-fit ​​connector 22 overlaps with the first connecting portion 11, and the stop portion 222 of the other snap-fit ​​connector 22 overlaps with the second connecting portion 12.

[0098] like Figure 4 As shown, in some embodiments, the snap-fit ​​member 22 includes a base 221 and a stop 222. The base 221 is connected to the frame 2. The stop 222 is angled to the side of the base 221 away from the frame 2. The stop 222 abuts against the side of the electrical connector 1 away from the frame 2.

[0099] It is understandable that the stop 222 abuts against the side of the electrical connector 1 away from the frame 2, thereby securing the electrical connector 1 between the frame 2 and the stop 222, which can limit the electrical connector 1 in the Z direction (third direction) and ensure the reliable fixation of the electrical connector 1.

[0100] In some embodiments, the extension height of the base 221 is adapted to the thickness of the electrical connector 1, thereby making the lower surface of the stop 222 fit precisely against the upper surface of the electrical connector 1 to ensure reliable fixation of the electrical connector 1.

[0101] In some embodiments, the stop portion 222 is vertically connected to the base 221.

[0102] In some embodiments, the upper surface of the stop 222 is constructed with a slope to facilitate the installation of the electrical connector 1. It is understood that, based on the slope of the upper surface of the stop 222, the electrical connector 1 can be installed in a larger space, and then gradually pressed down along the slope, guided by the slope to pass through the stop 222 and be fixed between the lower surface of the stop 222 and the upper surface of the bracket.

[0103] In some embodiments, the stop portion 222 and the base 221 are integrally injection molded.

[0104] In some embodiments, along the first direction, the width of the connection area between the stop portion 222 and the electrical connector 1 is D5, satisfying: 0.6 mm ≤ D5 ≤ 0.9 mm.

[0105] It is understandable that the width D5 of the connection area between the stop 222 and the electrical connector 1 in the first direction is set within the range of 0.6 mm to 0.9 mm to ensure that the stop 222 can reliably engage the electrical connector 1 and to avoid making the installation of the electrical connector 1 too difficult. If the width D5 of the connection area between the stop 222 and the electrical connector 1 in the first direction is less than 0.6 mm, the electrical connector 1 may have poor fixing reliability and may easily fall off the frame 2. If the width D5 of the connection area between the stop 222 and the electrical connector 1 in the first direction is greater than 0.9 mm, due to the material limitations of the stop 222 and the base 221, the deformation degree of the stop 222 is limited, which may easily lead to excessive installation difficulty of the electrical connector 1, or even make the electrical connector 1 impossible to install.

[0106] In some embodiments, the width D5 of the connection area between the stop portion 222 and the electrical connector 1 in the first direction is set to 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or any value between the two.

[0107] In some embodiments, along the second direction, the length of the connection area between the stop portion 222 and the electrical connector 1 is D6, satisfying: 2 mm ≤ D5 ≤ 5 mm.

[0108] Understandably, the length D6 of the connection area between the stop 222 and the electrical connector 1 in the second direction is set within the range of 2 mm to 5 mm to ensure that the stop 222 has sufficient strength and to avoid making the installation of the electrical connector 1 too difficult. If the length D6 of the connection area between the stop 222 and the electrical connector 1 in the second direction is less than 2 mm, the stop 222 may be insufficiently strong, causing it to break and the electrical connector 1 to fall off the frame 2. If the length D6 of the connection area between the stop 222 and the electrical connector 1 in the second direction is greater than 5 mm, due to the material limitations of the stop 222 and the base 221, the deformation of the stop 222 is limited, which may easily lead to excessive difficulty in installing the electrical connector 1, or even make it impossible to install the electrical connector 1.

[0109] In some embodiments, the length D6 of the connection area between the stop portion 222 and the electrical connector 1 in the second direction is set to 2 mm, 3 mm, 4 mm, 5 mm, or any value between the two.

[0110] This application also provides a battery pack. The battery pack includes the support structure as described in the foregoing embodiments.

[0111] In this embodiment, a first terminal of one individual battery cell is connected via a first connecting part 11, and a second connecting part 12 is connected to the second terminal of another individual battery cell, thereby achieving series connection of two adjacent individual battery cells. Since the first connecting part 11 and the second connecting part 12 are spaced apart in the first direction and staggered in the second direction, bridging of two adjacent individual battery cells can be achieved. When the battery pack has an even number of individual battery cells, the electrical connection 1 is used between a pair of adjacent individual battery cells to achieve electrical connection, allowing the positive and negative output terminals of the battery pack to be arranged on opposite sides. When the battery pack has an odd number of individual battery cells, the electrical connection 1 is used between a pair of adjacent individual battery cells to achieve electrical connection, allowing the positive and negative output terminals of the battery pack to be arranged on the same side. This optimizes the BMS layout, making the BMS layout more flexible and convenient.

[0112] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electrical connector, characterized in that, include: A first connecting portion and a second connecting portion are provided at intervals along a first direction. The first connecting portion is configured to connect to the first pole of a single cell, and the second connecting portion is configured to connect to the second pole of another single cell. The main body is connected between the first connecting part and the second connecting part. The main body includes a bending section for offsetting the first connecting part and the second connecting part along a second direction. The main body also includes a buffer section that arches along a third direction. A pressure relief hole is formed on the main body, and the buffer section is located in the area where the pressure relief hole is located. Wherein, the first direction is set at an angle to the second direction, the third direction is set at an angle to the first direction, the third direction is set at an angle to the second direction, and the polarities of the first pole and the second pole are opposite.

2. The electrical connector according to claim 1, characterized in that, The buffer section arches away from the individual battery cell.

3. The electrical connector according to any one of claims 1 to 2, characterized in that, The thickness of the main body is D1, and the thickness of the first connecting part is D2, satisfying: 60% D1≤D2≤70%D1.

4. The electrical connector according to claim 3, characterized in that, The following conditions must be met: 0.5 mm ≤ D2 ≤ 1.6 mm.

5. The electrical connector according to any one of claims 1 to 2, characterized in that, The thickness of the main body is D1, and the thickness of the second connecting part is D3, satisfying: 60% D1≤D3≤70%D1.

6. The electrical connector according to claim 5, characterized in that, The following conditions must be met: 0.5 mm ≤ D3 ≤ 1.6 mm.

7. A support structure, characterized in that, include: Frame; Electrical connector as described in any one of claims 1 to 6; The electrical connector is installed on the frame.

8. The support structure according to claim 7, characterized in that, The frame is connected to at least two spaced-apart limiters, and the electrical connector is located between two adjacent limiters.

9. The support structure according to claim 8, characterized in that, The electrical connector and the limiting member are clearance-fitted, and the distance between them is D4, which satisfies: 0.15 mm ≤ D4 ≤ 0.3 mm.

10. The support structure according to any one of claims 7 to 9, characterized in that, The frame is connected to a snap-fit ​​connector, which is connected to the electrical connector.

11. The support structure according to claim 10, characterized in that, The snap-fit ​​component includes: The base is connected to the frame. The stop portion is angularly connected to the side of the base away from the frame. The stop portion abuts against the side of the electrical connector away from the frame.

12. The support structure according to claim 11, characterized in that, Along the first direction, the width of the area where the stop portion connects to the electrical connector is D5, which satisfies: 0.6 mm ≤ D5 ≤ 0.9 mm.

13. The support structure according to claim 11, characterized in that, Along the second direction, the length of the connection area between the stop and the electrical connector is D6, which satisfies: 2 mm ≤ D5 ≤ 5 mm.

14. A battery pack, characterized in that, Includes the support structure as described in any one of claims 7 to 13.

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