Electric connector, battery and electric device

Abstract

The utility model relates to the technical field of power utilization devices, and provides an electric connecting piece, a battery and a power utilization device.The provided electric connecting piece is used for connecting at least two battery monomers and comprises a plurality of conductive parts and an insulating part, the conductive parts are used for being electrically connected with the at least two battery monomers, the insulating part is connected with two adjacent conductive parts in an insulating mode, and the insulating part is used for being electrically connected with the at least two battery monomers. The conductive parts and the insulating parts are alternately connected to form a cavity, and the cavity is used for circulation of a heat exchange medium. According to the scheme, the problem that the cooling efficiency of an external structure of the battery is relatively poor in a battery cooling mode in the prior art can be solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an electrical connector, a battery and an electrical device. Background Art

[0002] As people's pace of work and life continues to accelerate, the demand for fast charging of batteries is also getting higher and higher. When the battery is fast charged, the temperature of the external structure of the battery (that is, the structure of the battery used for the external circuit, such as the pole) rises rapidly, and the external structure of the battery needs to be cooled to ensure the safe use of the battery.

[0003] The prior art usually cools the battery through a water cooling plate. During the cooling process of the battery, the water cooling plate exchanges heat with the external structure of the battery through structures such as the battery shell and the outer shell of the battery cell to achieve cooling of the external structure. However, this cooling method has a long cooling path and low cooling efficiency. Utility Model Content

[0004] In view of this, the present application provides an electrical connector, a battery and an electrical device to solve the problem of poor cooling efficiency of the external structure of the battery in the conventional method of cooling the battery.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] An electrical connector for connecting at least two battery cells, the electrical connector comprising:

[0007] A conductive part, used to electrically connect to at least two of the battery cells, and the number of the conductive parts is multiple;

[0008] The insulating part insulates and connects two adjacent conductive parts. The conductive parts and the insulating parts are alternately connected to form a chamber, and the chamber is used for circulating a heat exchange medium.

[0009] Optionally, a local area of ​​the top wall is recessed into the cavity and abuts against the bottom wall to form a connection area, and the connection area is used to connect with the battery cell; or,

[0010] The electrical connector includes a bottom wall and a top wall that are arranged opposite to each other. A local area of ​​the top wall is recessed into the cavity and is fused and connected with the bottom wall to form an integrated connection area, and the connection area is used to connect with the battery cell.

[0011] Optionally, in the width direction of the chamber, the connection area is located on one side, and a heat exchange channel is formed on the other side of the connection area.

[0012] Optionally, in the width direction of the chamber, the chamber is divided into two heat exchange channels by the connecting area, wherein:

[0013] There are a plurality of connection areas arranged at intervals, and the interval positions of adjacent connection areas form a connecting channel connecting the two heat exchange channels; or,

[0014] In the length direction of the chamber, the connection area extends from the first end of the chamber to the second end of the chamber.

[0015] Optionally, the heat exchange medium is insulating coolant or cooling air.

[0016] Optionally, the wall thickness of the conductive part is 0.5 mm-2 mm.

[0017] Optionally, the conductive part and the insulating part are welded; or,

[0018] The conductive part and the insulating part are bonded; or,

[0019] The conductive part and the insulating part are connected by a nano injection molding process; or,

[0020] The conductive portion and the insulating portion are clamped together.

[0021] Optionally, the conductive part includes a first part and a second part, the first part and the second part are distributed along the length direction of the electrical connector, one end of the first part is welded to the second part, and the other end of the first part is connected to the insulating part.

[0022] A battery comprising:

[0023] Two or more battery cells, each of which includes a pole;

[0024] Two or more of the above-mentioned electrical connectors are conductively connected to the poles of at least two of the battery cells.

[0025] Optionally, the electrical connector includes a bottom wall and a top wall that are arranged opposite to each other, a local area of ​​the top wall is recessed into the chamber and abuts against the bottom wall to form a connection area, and the connection area is connected to the pole of the battery cell;

[0026] Each of the connecting regions is in conductive contact with the poles of opposite polarity of two adjacent battery cells.

[0027] Optionally, in the height direction of the electrical connector, a projection of an area enclosed by connection end faces of a group of opposite poles in conductive contact with the connection area is located within a projection of the connection area connected thereto.

[0028] Optionally, the bottom wall of the electrical connector faces the pole of the battery cell, and the bottom wall is provided with a positioning structure, which protrudes in a direction away from the cavity, and the positioning structure and the pole are positioned and matched.

[0029] Optionally, the positioning structure includes an annular positioning protrusion, and the annular positioning protrusion surrounds the pole to be positioned and matched with the pole.

[0030] Optionally, a portion of the bottom wall protrudes toward the pole to form the annular positioning protrusion.

[0031] An electrical device comprises the battery mentioned above.

[0032] In the embodiment of the present application, a chamber for circulating a heat exchange medium is formed in the electrical connector. When the electrical connector is used for a battery, the electrical connector is in contact and electrically connected with an external structure of the battery. Then, the heat exchange medium contacts the electrical connector for heat conduction, and the electrical connector contacts the external structure of the battery cell (such as a pole) for heat conduction, shortening the heat conduction path between the heat exchange medium and the external structure of the battery cell, improving the heat exchange efficiency, and thus improving the cooling efficiency of the external structure of the battery cell. It can be seen that the embodiment disclosed in the present application can solve the problem of poor cooling efficiency of the external structure of the battery in the prior art method of cooling the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the structure of an electrical connector provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the structure of a battery provided in an embodiment of the present application;

[0036] Figure 3 for Figure 2 The cross-sectional view in the AA direction;

[0037] Figure 4 for Figure 2 Side view of.

[0038] exist Figure 1-Figure 4 middle:

[0039] 100, conductive portion; 110, first portion; 120, second portion;

[0040] 200, insulation part;

[0041] 310, bottom wall; 320, top wall; 330, side wall;

[0042] 400, connection area;

[0043] 500, heat exchange flow channel;

[0044] 600, connecting channel;

[0045] 1000, battery cell; 1010, electrode. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] like Figure 1 As shown, an embodiment of the present application provides an electrical connector, which is used to connect at least two battery cells 1000 and can be applied to a battery.

[0048] The electrical connector includes a conductive part 100, which is used to electrically connect to the external structure of at least two battery cells 1000 (that is, the structure of the battery cell 1000 for external circuits, such as the pole 1010), so that the conductive part 100 is electrically connected to at least two battery cells 1000, and the two battery cells 1000 are electrically connected through the electrical connector. The number of conductive parts 100 is multiple, so that the electrical connector can electrically connect more than two battery cells 1000. Optionally, the conductive part 100 can be a square tubular structure, and the square tubular structure has a flat bottom wall 310, which is convenient for increasing the contact area between the bottom wall 310 and the external structure of the battery cell 1000, thereby improving the connection strength between the two.

[0049] The electrical connector also includes an insulating part 200, which insulates and connects two adjacent conductive parts 100. When the electrical connector is applied to a battery, the insulating part 200 is insulated and connected between two conductive parts 100 with different potentials to avoid short circuits. The conductive parts 100 and the insulating part 200 are alternately connected to form a chamber, and the chamber is used to circulate a heat exchange medium. In this structure, the electrical connector can not only electrically connect at least two battery cells 1000, but also cool the battery cells 1000 (especially the external structure of the battery cells 1000).

[0050] The heat exchange medium can flow in the chamber, so in order to avoid short circuit, the heat exchange medium is an insulating medium, such as insulating coolant or cooling air. Along the extension direction of the chamber, the two ends of the chamber of the electrical connector can be closed ends, and connection ports are opened at the closed ends, or the two ends of the chamber of the electrical connector can also be open ends, and the open ends (or connection ports) at both ends of the chamber can be respectively connected to the external heat exchange medium circulation pipeline, so that the external heat exchange medium circulation pipeline and the chamber of the electrical connector form a circulation channel for the heat exchange medium to circulate, and stably provide heat exchange medium for the chamber of the electrical connector.

[0051] The conductive part 100 in the embodiment of the present application is used to electrically connect to the external structure of the battery cell 1000 to achieve electrical connection between the conductive part 100 and the battery cell 1000. When the electrical connector is used in the battery, in order to ensure the connection stability between the electrical connector and the battery cell 1000, the electrical connector is connected to the external structure by welding. While achieving the electrical connection, the connection strength and stability between the electrical connector and the external structure are guaranteed, thereby ensuring the stability of the electrical connection.

[0052] In the embodiment of the present application, a chamber for circulating a heat exchange medium is formed in the electrical connector. When the electrical connector is used in a battery, the electrical connector is in contact and electrically connected with the external structure of the battery cell 1000. Then, the heat exchange medium contacts the electrical connector for heat conduction, and the electrical connector contacts the external structure of the battery cell 1000 (such as the pole 1010) for heat conduction, shortening the heat conduction path between the heat exchange medium and the external structure of the battery cell 1000, improving the heat exchange efficiency, and thus improving the cooling efficiency of the external structure of the battery cell 1000. It can be seen that the embodiment disclosed in the present application can solve the problem of poor cooling efficiency of the external structure of the battery in the prior art method of cooling the battery.

[0053] In a further technical solution, the conductive part 100 may be made of metal, which not only satisfies the conductivity of the conductive part 100 , but also has good thermal conductivity, thereby improving the heat dissipation efficiency.

[0054] When the electrical connector is used in a battery, the conductive part 100 is electrically and thermally connected to the external structure of the battery cell 1000 by welding. Therefore, when the conductive part 100 is made of metal, the heat exchange medium is in direct contact with the conductive part 100 made of metal, and the conductive part 100 made of metal is in direct contact with the external structure of the battery cell 1000. This shortens the heat exchange path between the heat exchange medium and the external structure of the battery cell 1000. Due to the good thermal conductivity of the metal, the thermal conductivity efficiency can be further improved, thereby further improving the cooling efficiency of the external structure of the battery cell 1000.

[0055] The electrical connector includes a bottom wall 310 and a top wall 320 that are arranged opposite to each other. A local area of ​​the top wall 320 can be recessed into the cavity and abut against the bottom wall 310 to form a connection area 400. Alternatively, a local area of ​​the top wall 320 can be recessed into the cavity and fused with the bottom wall 310 to form an integrated connection area 400. Optionally, the connection area 400 of this structure can be formed by casting and profile extrusion. The connection area 400 is used to connect to the battery cell 1000. Specifically, the connection area 400 can be located at the conductive part 100.

[0056] The connection area 400 formed by the local area of ​​the top wall 320 being recessed and contacted with the bottom wall 310 has high structural strength, which can improve the connection stability between the connection area 400 and the external structure of the battery cell 1000 when the two are connected. The local recess of the top wall 320 forms a concave-convex structure on the top wall 320, which is beneficial to improving the structural strength of the top wall 320 and the overall electrical connector.

[0057] Optionally, the connection area 400 may be circular, oval, or waist-shaped. Of course, the shape of the connection area 400 may also be other regular or irregular shapes, which is not limited in the present application.

[0058] In the embodiment of the present application, the conductive part 100 is used to be electrically connected to the external structure of the battery cell 1000. In order to maintain a stable electrical connection, it is necessary to ensure the connection stability between the conductive part 100 and the battery cell 1000. For this reason, in the embodiment of the present application, the wall thickness of the conductive part 100 can be 0.5mm-2mm, for example 1mm, or 2mm.

[0059] In this case, the thickness of the conductive part 100 can be ensured, and the structural strength of the conductive part 100 can be ensured, thereby ensuring the connection stability between the conductive part 100 and the external structure of the battery cell 1000, and preventing the conductive part 100 from being too thin (for example, less than 0.5 mm), resulting in poor structural strength of the conductive part 100, thereby causing damage to the conductive part 100 and then causing failure of the electrical connection between the conductive part 100 and the external structure of the battery cell 1000. It can also prevent the conductive part 100 from being too thin, resulting in difficult welding operations with the external structure of the battery cell 1000, and it can also prevent the conductive part 100 from being too thick (for example, greater than 2 mm), resulting in difficult welding operations with the external structure of the battery cell 1000.

[0060] There are many ways to distribute the connection area 400. In an optional embodiment, in the width direction c of the chamber, the connection area 400 can be located on one side, and a heat exchange channel 500 can be formed on the other side of the connection area 400. The heat exchange channel 500 is used to circulate heat exchange medium.

[0061] In another optional embodiment, in the width direction c of the chamber, the chamber can be divided into two heat exchange channels 500 by the connection area 400, and the two heat exchange channels 500 are both used to circulate heat exchange medium. This structure can improve the temperature uniformity of the electrical connector and provide a better heat exchange effect.

[0062] In a further technical solution, the connection area 400 may be arranged in a plurality of intervals along the length direction a of the electrical connector, and the interval positions of adjacent connection areas 400 may form a connecting channel 600 connecting two heat exchange channels 500. In this case, the two heat exchange channels 500 are connected, and the two heat exchange channels 500 and the connecting channel 600 can form a surrounding area surrounding the connection area 400, thereby improving the heat dissipation effect on the external structure (such as the pole 1010) of the battery cell 1000 connected to the connection area 400.

[0063] Of course, in other embodiments, in the length direction a of the chamber, the connection area 400 may also extend from the first end of the chamber to the second end of the chamber, that is, the two heat exchange channels 500 are not connected.

[0064] In order to achieve the insulation and sealed connection between the conductive part 100 and the insulating part 200, in an optional embodiment, the conductive part 100 and the insulating part 200 can be connected by welding. In another optional embodiment, the conductive part 100 and the insulating part 200 can be connected by bonding. In another optional embodiment, the conductive part 100 and the insulating part 200 can be connected by snapping. Optionally, the relative surfaces of the conductive part 100 and the insulating part 200 form a connecting surface. In the connecting surfaces of the two, one can be provided with a buckle, and the other can be provided with a slot. The slot and the buckle are snapped to achieve the snap connection between the two. Of course, in this connection method, in order to ensure the sealed connection between the conductive part 100 and the insulating part 200, a sealing ring can be provided between the connecting surfaces of the conductive part 100 and the insulating part 200.

[0065] In the embodiment of the present application, the conductive part 100 and the insulating part 200 can also be connected by a nano injection molding process. Connecting the conductive part 100 and the insulating part 200 by the nano injection molding process can achieve a better sealing effect at the connection position to improve the sealing performance of the chamber.

[0066] Of course, when the conductive part 100 and the insulating part 200 are connected by the nano injection molding process, if the conductive part 100 is too long, it is not conducive to processing.

[0067] To this end, in the embodiment of the present application, the conductive part 100 may include a first part 110 and a second part 120, and the first part 110 and the second part 120 may be distributed along the length direction a of the electrical connector, one end of the first part 110 is welded to the second part 120, and the other end of the first part 110 is connected to the insulating part 200. The connection area 400 may be located in the second part 120, that is, the second part 120 may be electrically connected to the battery cell 1000, and of course, the connection area 400 may also be partially located in the first part 110 and partially located in the second part 120, that is, both the first part 110 and the second part 120 are electrically connected to the battery cell 1000.

[0068] In a specific processing process, the insulating part 200 and the first part 110 may be connected by nano injection molding, and then the second part 120 may be connected to the first part 110 by welding. The materials of the first part 110 and the second part 120 may be the same.

[0069] like Figures 2 to 4 As shown, based on the above-mentioned electrical connector, the embodiment of the present application further provides a battery, which includes more than two battery cells 1000, each battery cell 1000 includes a pole 1010, and the pole 1010 is an external structure of the battery cell 1000, which is used to connect with an external circuit to realize functions such as charging the battery cell 1000, and the battery also includes more than two of the above-mentioned electrical connectors, and the electrical connectors are conductively connected to the poles 1010 of at least two battery cells 1000. Since the battery has the above-mentioned electrical connector, the beneficial effects of the battery brought by the electrical connector can be found in the above content, which will not be repeated here.

[0070] Optionally, the battery may be a lithium battery.

[0071] Optionally, the electrical connector can be electrically and thermally connected to the pole 1010 by welding.

[0072] In the above scheme, the electrical connector may include a bottom wall 310 and a top wall 320 arranged opposite to each other, a local area of ​​the top wall 320 is recessed into the cavity and abuts against the bottom wall 310 to form a connection area 400, and the connection area 400 is connected to the pole 1010 of the battery cell 1000.

[0073] The battery can be a battery module, which is composed of multiple battery cells 1000 connected in series, parallel or mixed, or it can be a battery pack, which is directly composed of multiple battery cells 1000 connected in series, parallel or mixed, or it can be composed of multiple battery modules connected in series, parallel or mixed, each battery module is composed of multiple battery cells 1000 connected in series, parallel or mixed.

[0074] For example, a series connection between multiple battery cells 1000 can be achieved through electrical connectors. Specifically, the battery includes more than two battery cells 1000 and two electrical connectors. The battery cells 1000 are arranged in sequence. The two electrical connectors can be located on one side of the battery cell 1000, respectively. One of the electrical connectors can be connected to the pole 1010 located in the same row, and the other electrical connector can be connected to the pole 1010 located in another row.

[0075] Each connection area 400 can be in conductive contact with the opposite poles 1010 of two adjacent battery cells 1000, and the insulating part 200 can be located between two poles 1010 with unequal potentials. That is, the insulating part 200 is insulated and connected between two conductive parts 100 with unequal potentials to achieve series connection of multiple battery cells 1000.

[0076] In a further technical solution, in the height direction b of the electrical connector, the projection of the area surrounded by the connection end faces of a group of opposite poles 1010 in conductive contact with the connection area 400 is located within the projection of the connection area 400 connected thereto. In this case, the effective connection between each pole 1010 and each connection area 400 can be ensured, and part of the processing tolerance can also be absorbed. Even if part of the conductive part 100 cannot face the corresponding pole 1010 due to the processing error of the electrical connector, the effective electrical and thermal connection between the conductive part 100 and the corresponding pole 1010 can be ensured, and the requirements for the dimensional processing accuracy of each conductive part 100 and each insulating part 200 in the electrical connector are reduced.

[0077] In order to reduce the difficulty of connecting the electrical connector with the pole 1010, in an embodiment of the present application, the bottom wall 310 of the electrical connector faces the pole 1010 of the battery cell 1000, and the bottom wall 310 may be provided with a positioning structure, which protrudes in a direction away from the cavity, and the positioning structure and the pole 1010 are positioned and matched.

[0078] In this case, the positioning structure is used to achieve positioning and matching between the electrical connector and the pole 1010 , which facilitates the positioning and installation of the electrical connector and the pole 1010 , thereby reducing the difficulty of assembling the electrical connector and the pole 1010 .

[0079] In an optional embodiment, the positioning structure may include a plurality of positioning protrusions, for example, four, and the plurality of positioning protrusions enclose a positioning space, and the pole 1010 extends into the positioning space to achieve positioning cooperation between the pole 1010 and the electrical connector.

[0080] In another optional embodiment, the positioning structure may also include an annular positioning protrusion, which surrounds the pole 1010 and is positioned and matched with the pole 1010. The annular positioning protrusion is less difficult to process, which can reduce the difficulty of processing the positioning structure.

[0081] There are many ways to form the annular positioning protrusion on the bottom wall 310. In an optional embodiment, a positioning ring can be welded to the surface of the bottom wall 310 facing the pole 1010 by welding or other means to form the annular positioning protrusion on the bottom wall 310.

[0082] In the embodiment of the present application, the bottom wall 310 or the connection area 400 may also partially protrude in the direction close to the pole 1010 to form an annular positioning protrusion. In this case, the bottom wall 310 partially protrudes in the direction of the pole 1010, and an annular positioning protrusion is formed on the outside of the bottom wall 310. Correspondingly, an annular depression is formed in the corresponding area inside the bottom wall 310 (i.e., in the chamber), and the heat exchange medium in the chamber can flow into the annular depression. The annular positioning protrusion surrounds the side of the pole 1010, and the annular depression also surrounds the side of the pole 1010. The heat exchange medium flowing into the annular depression can better exchange heat with the side of the pole 1010, thereby improving the cooling efficiency of the pole 1010.

[0083] Based on the above battery, the embodiment of the present application further provides an electric device, which includes the above battery. Since the electric device includes the above battery, the beneficial effects of the electric device brought by the battery can be found in the above content, which will not be repeated here.

[0084] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0085] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0086] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0087] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0088] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0089] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An electrical connector for connecting at least two battery cells (1000), characterized in that: The electrical connector comprises: A conductive part (100) used for electrically connecting to at least two of the battery cells (1000), wherein the conductive parts (100) are multiple in number; The insulating part (200) is used to insulate and connect two adjacent conductive parts (100); the conductive parts (100) and the insulating part (200) are alternately connected to form a chamber, and the chamber is used for circulating a heat exchange medium.

2. The electrical connector according to claim 1, characterized in that: The electrical connector comprises a bottom wall (310) and a top wall (320) arranged opposite to each other, a local area of ​​the top wall (320) is recessed into the chamber and abuts against the bottom wall (310) to form a connection area (400), and the connection area (400) is used to connect to the battery cell (1000); or, The electrical connector comprises a bottom wall (310) and a top wall (320) which are arranged opposite to each other, a local area of ​​the top wall (320) is recessed into the cavity and is fused and connected with the bottom wall (310) to form an integrated connection area (400), and the connection area (400) is used to connect with the battery cell (1000).

3. The electrical connector according to claim 2, characterized in that: In the width direction (c) of the chamber, the connection area (400) is located on one side, and a heat exchange channel (500) is formed on the other side of the connection area (400).

4. The electrical connector according to claim 2, characterized in that: In the width direction (c) of the chamber, the chamber is divided into two heat exchange channels (500) by the connecting area (400), wherein: The connection areas (400) are multiple and arranged at intervals, and the interval positions of adjacent connection areas (400) form a connecting channel (600) connecting the two heat exchange channels (500); or, In the length direction (a) of the chamber, the connection area (400) extends from the first end of the chamber to the second end of the chamber.

5. The electrical connector according to claim 1, characterized in that: The heat exchange medium is insulating coolant or cooling air.

6. The electrical connector according to claim 1, characterized in that: The wall thickness of the conductive part (100) is 0.5 mm-2 mm.

7. The electrical connector according to claim 1, characterized in that: The conductive part (100) and the insulating part (200) are welded; or, The conductive part (100) and the insulating part (200) are bonded; or, The conductive part (100) and the insulating part (200) are connected by a nano injection molding process; or, The conductive part (100) and the insulating part (200) are snap-connected.

8. The electrical connector according to claim 7, characterized in that: The conductive part (100) comprises a first part (110) and a second part (120), wherein the first part (110) and the second part (120) are distributed along a length direction (a) of the electrical connector, one end of the first part (110) is welded to the second part (120), and the other end of the first part (110) is connected to the insulating part (200).

9. A battery, characterized in that: include: Two or more battery cells (1000), each of the battery cells (1000) comprising a pole (1010); Two or more electrical connectors according to any one of claims 1 to 8, wherein the electrical connectors are electrically conductively connected to the poles (1010) of at least two of the battery cells (1000).

10. The battery according to claim 9, characterized in that The electrical connector comprises a bottom wall (310) and a top wall (320) arranged opposite to each other, a local area of ​​the top wall (320) is recessed into the chamber and abuts against the bottom wall (310) to form a connection area (400), and the connection area (400) is connected to the pole (1010) of the battery cell (1000); Each of the connection regions (400) is in conductive contact with the opposite poles (1010) of two adjacent battery cells (1000).

11. The battery according to claim 10, characterized in that In the height direction (b) of the electrical connector, the projection of the area enclosed by the connection end faces of a group of opposite poles (1010) in conductive contact with the connection area (400) is located within the projection of the connection area (400) connected thereto.

12. The battery according to claim 9, characterized in that The bottom wall (310) of the electrical connector faces the pole (1010) of the battery cell (1000), and the bottom wall (310) is provided with a positioning structure, which protrudes in a direction away from the chamber, and the positioning structure and the pole (1010) are positioned and matched.

13. The battery according to claim 12, characterized in that The positioning structure comprises an annular positioning protrusion, and the annular positioning protrusion surrounds the pole (1010) so as to be positioned and matched with the pole (1010).

14. The battery according to claim 13, characterized in that A portion of the bottom wall (310) protrudes toward the pole (1010) to form the annular positioning protrusion.

15. An electrical device, characterized in that: Comprising a battery as claimed in any one of claims 10 to 14.

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