Electrical connection structure, battery pack and electric device

Abstract

The utility model discloses a kind of electric connection structure, battery pack and electric equipment, the electric connection structure is suitable for electrically connecting at least two electric core groups, and include: connecting piece, the connecting piece is electrically connected with at least two the electric core group respectively;First sampling part, the first sampling part is used to collect temperature and set in the connecting piece.According to the electric connection structure designed in the utility model, first sampling part is designed to collect the temperature of connecting piece, to improve the security of the battery pack provided with the electric connection structure.

Description

Technical Field

[0001] This utility model relates to the field of battery packs, and in particular to an electrical connection structure, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, the cell groups in high-power battery packs are connected by an electrical connection structure at the bridging points. In existing technologies, a temperature monitoring structure is generally set up in the cell to monitor and measure the cell temperature. However, this structure cannot monitor the temperature of the electrical connection structure at the bridging points, which leads to safety hazards in the battery pack. Utility Model Content

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an electrical connection structure. The electrical connection structure designed according to this invention includes a first sampling element to collect the temperature of the connector, thereby improving the safety of battery packs equipped with this electrical connection structure.

[0004] This utility model also proposes a battery pack having the above-mentioned electrical connection structure.

[0005] This utility model also proposes an electrical device having the above-mentioned battery pack.

[0006] The electrical connection structure according to this utility model is suitable for conductively connecting at least two battery cell groups, and includes: a connector, the connector being conductively connected to at least two of the battery cell groups respectively; and a first sampling element, the first sampling element being used to collect temperature and disposed on the connector.

[0007] The electrical connection structure of this utility model is designed with a first sampling element to collect the temperature of the connector, which can monitor the temperature of the electrical connection structure at the bridging position between the battery cells, thereby improving the safety of the battery pack equipped with this electrical connection structure.

[0008] According to some embodiments of the present invention, the connector is provided with a mounting portion suitable for mounting the first sampling member; the electrical connection structure further includes a mounting cover, which is adapted to cooperate with the mounting portion to mount the first sampling member on the mounting portion.

[0009] According to some embodiments of the present invention, the mounting cover is provided with a first assembly part, and the mounting part is provided with a second assembly part adapted to cooperate with the first assembly part.

[0010] According to some embodiments of the present invention, the connector is electrically connected to the two battery cells on both sides in the first direction, and the mounting portion protrudes from one side edge of the connector in the second direction, the second direction intersecting the first direction.

[0011] According to some embodiments of the present invention, the mounting cover is provided with the first assembly part on at least one side in the first direction, and the mounting cover is provided with a wire hole on at least one side in the second direction.

[0012] According to some embodiments of the present invention, the mounting cover includes: an end plate, the end plate being located on one side of the mounting portion in a third direction and spaced apart from the surface of the mounting portion in a third direction, the third direction intersecting the second direction and the first direction respectively; a first side plate, the first side plate being located on the surface of the end plate facing the mounting portion and being configured as two, the two first side plates being spaced apart in a first direction of the end plate, at least one first side plate being provided with the first mounting portion; and a second side plate, the second side plate being located on the surface of the end plate facing the mounting portion and being configured as two, the two second side plates being spaced apart in a second direction of the end plate, at least one second side plate being provided with the wire hole.

[0013] According to some embodiments of the present invention, the two first side plates are respectively provided with the first assembly part; the two second side plates are respectively provided with the wire passage hole.

[0014] According to some embodiments of the present invention, the end plate is provided with at least one through hole in the third direction.

[0015] According to some embodiments of the present invention, at least one of the second side plates has a protective protrusion protruding from the surface opposite to the other second side plate, and the protective protrusion has the wire hole.

[0016] According to some embodiments of the present invention, the first assembly part is configured as an assembly protrusion, and the second assembly part is configured as an assembly groove adapted to receive the assembly protrusion. The assembly protrusion protrudes from the second side plate in a third direction, and part of the assembly protrusion is adapted to deform.

[0017] According to some embodiments of the present invention, the mounting protrusion also has a stop protrusion at the end of the mounting protrusion that is away from the end plate in a third direction. The stop protrusion is located on the surface of the mounting protrusion facing the mounting portion in a second direction, and the surface of the stop protrusion facing the end plate is adapted to stop against the surface of the mounting portion that is away from the end plate.

[0018] According to some embodiments of the present invention, the mounting protrusion is provided with a positioning groove; the mounting part has the mounting groove formed on at least one side in the first direction, and the mounting groove protrudes in the first direction to form a positioning protrusion suitable for positioning and cooperating with the positioning groove.

[0019] According to some embodiments of the present invention, the connector includes a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are electrically connected to the two battery cell groups respectively.

[0020] According to some embodiments of the present invention, a high-temperature resistant film is provided on the surface of the mounting part facing the first sampling element.

[0021] The battery pack according to a second aspect embodiment of the present invention is briefly described below.

[0022] The battery pack according to this utility model includes the electrical connection structure described in any of the above embodiments and at least two cell groups, wherein the connector is electrically connected to at least two of the cell groups respectively. Because the battery pack according to this utility model is provided with the electrical connection structure of the above embodiments, the battery pack has higher safety, lower cost, and higher assembly efficiency.

[0023] According to some embodiments of the present invention, the connector includes a first connecting part and a second connecting part, the first connecting part and the second connecting part being electrically connected to two battery cell groups respectively; the battery pack further includes a first bracket and a second bracket, the first bracket and the second bracket being positioned and connected to the two battery cell groups respectively, the first connecting part being connected to the first bracket, and the second connecting part being connected to the second bracket.

[0024] According to some embodiments of the present invention, the battery pack further includes: a second sampling member, wherein the second sampling member is disposed on the first bracket and electrically connected to the first connecting portion, or the second sampling member is disposed on the second bracket and electrically connected to the second connecting portion.

[0025] According to some embodiments of the present invention, the second sampling member is provided with a limiting hole, and the first bracket or the second bracket is provided with a limiting protrusion suitable for cooperating with the limiting hole.

[0026] According to some embodiments of the present invention, the first bracket or the second bracket is provided with a buckling part, and the buckling part is constructed as two buckling parts arranged opposite to each other in a second direction, and the two buckling parts are adapted to buckle with the second sampling member.

[0027] According to some embodiments of the present invention, the connector is adapted to be electrically connected to the lead-out terminal of the battery cell assembly, the battery cell assembly being composed of multiple battery cells, and the lead-out terminal being the positive or negative terminal of the end battery cell of the battery cell assembly.

[0028] The following is a brief description of the electrical equipment according to a third aspect embodiment of the present invention.

[0029] The electrical device according to this utility model includes the battery pack described in any of the above embodiments. Since the electrical device according to this utility model is equipped with the battery pack described in the above embodiments, the electrical device has better safety performance.

[0030] In summary, the electrical connection structure of this utility model is designed with a first sampling element to collect the temperature of the connector, which can monitor the temperature of the electrical connection structure at the bridging position between the battery cells, thereby improving the safety of the battery pack equipped with this electrical connection structure.

[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a schematic diagram of the electrical connection structure according to an embodiment of the present invention when used in a battery cell assembly.

[0034] Figure 2 yes Figure 1 Enlarged view of the electrical connection structure in the middle section.

[0035] Figure 3 yes Figure 2 Enlarged view of the installation cover on the middle structure.

[0036] Figure 4 yes Figure 1 A magnified view of the electrical connection structure from another perspective of the structure.

[0037] Figure 5 This is a structural schematic diagram of the second sampling component according to an embodiment of the present utility model.

[0038] Figure 6 yes Figure 5 Enlarged view of the second sampling component in the middle structure.

[0039] Figure label:

[0040] 1. Electrical connection structure; 2. Battery cell assembly;

[0041] 10. Connector; 11. Mounting part; 111. Second assembly part; 112. Positioning protrusion; 113. High-temperature resistant membrane;

[0042] 21. First connecting part; 22. Second connecting part;

[0043] 30. First sampling component; 31. Wire harness terminal; 32. Wire harness;

[0044] 40. Mounting cover; 41. End plate; 411. Through hole; 42. First side plate; 421. First assembly part; 422. Positioning groove; 423. Stop protrusion; 43. Second side plate; 431. Wire hole; 432. Protective protrusion;

[0045] 51. First support; 52. Second support; 521. Limiting protrusion; 522. Buckling part; 60. Second sampling component; 61. Limiting hole. Detailed Implementation

[0046] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In related technologies, the modules in high-power battery packs are connected by an electrical connection structure at the bridging position. In existing technologies, a temperature monitoring structure is generally set in the cell to monitor and measure the cell temperature. However, this structure cannot monitor the temperature of the electrical connection structure at the bridging position, which leads to safety hazards in the battery pack.

[0052] The following is for reference. Figures 1-6 Description of an electrical connection structure 1 according to an embodiment of the present utility model.

[0053] like Figure 1 As shown, the electrical connection structure 1 according to this utility model is suitable for conductively connecting at least two battery cell groups 2, and includes: a connector 10 and a first sampling element 30. The connector 10 is conductively connected to at least two battery cell groups 2 respectively. The first sampling element 30 is used to collect temperature data and is disposed on the connector 10. Specifically, the first sampling element 30 can collect temperature data of the connector 10 and / or battery cell groups 2, and can also collect voltage data or other data of the connector 10 and / or battery cell groups 2, which can be designed according to actual needs. Furthermore, the first sampling element 30 can be constructed as one or more. When there is only one first sampling element 30, one first sampling element 30 can collect at least temperature data. When there are multiple first sampling elements 30, multiple first sampling elements 30 can collect different data, which can also be designed according to actual needs. Alternatively, the first sampling element 30 can be used only for collecting at least temperature data of the electrical connection structure 1, and the battery cell groups 2 can be designed with separate sampling structures.

[0054] The electrical connection structure 1 of this utility model is designed with a first sampling element 30 to collect the temperature of the connector 10, which can monitor the temperature of the electrical connection structure 1 at the bridging position between the cell groups 2, thereby improving the safety of the battery pack with the electrical connection structure 1.

[0055] In the existing technology, the installation structure and operation of the temperature monitoring structure are complicated, which increases the number of components required for the battery pack, as well as the cost and assembly process of the battery pack.

[0056] According to some embodiments of this utility model, such as Figures 2-3 As shown, the connector 10 is provided with a mounting portion 11 suitable for mounting the first sampling component 30; the electrical connection structure 1 also includes a mounting cover 40, which is adapted to cooperate with the mounting portion 11 to mount the first sampling component 30 onto the mounting portion 11. Specifically, the mounting portion 11 is designed on the connector 10 to house the first sampling component 30, and the mounting cover 40 is designed to cooperate with the mounting portion 11 to mount the first sampling component 30 onto the mounting portion 11, making the assembly and disassembly of the first sampling component 30 with the connector 10 simple and convenient, simplifying the assembly process of the first sampling component 30, and reducing the cost of the electrical connection structure 1.

[0057] Furthermore, the mounting portion 11 can be located at any position on the connector 10. For example, the mounting portion 11 can be located on the edge of the connector 10, on the connector 10 itself, or spaced apart from some of the connector 10 in any direction, depending on the actual requirements. In some embodiments, the mounting portion 11 is connected to the connector 10 by local heat pressing.

[0058] Furthermore, such as Figure 3 As shown, the mounting cover 40 is provided with a first mounting portion 421, and the mounting portion 11 is provided with a second mounting portion 111 adapted to cooperate with the first mounting portion 421. The mounting cover 40 and the mounting portion 11 cooperate with the first mounting portion 421 and the second mounting portion 111 to fix the first sampling member 30 and the connector 10.

[0059] According to some embodiments of this utility model, such as Figures 2-3 As shown, the connector 10 is electrically connected to the two battery cell groups 2 on both sides in the first direction, and the mounting part 11 protrudes from one side edge of the connector 10 in the second direction, which intersects with the first direction. Specifically, the mounting part 11 is located on the edge of the connector 10 and protrudes, wherein the connector 10 is connected to the two battery cell groups 2 on both sides in the first direction, and the mounting part 11 protrudes from one side edge of the connector 10 in the second direction to facilitate the placement of the first sampling element 30.

[0060] Furthermore, the electrical connection structure 1 is provided with two battery cell groups 2 on both sides of the first direction. The battery cell group 2 has a first side and a second side in the third direction. The third direction intersects with the second direction and the first direction respectively. The electrical connection structure 1 is located on the first side of the battery cell group 2 in the third direction. The first sampling member 30 is also located on the surface of the mounting part 11 facing the first side of the battery cell group 2 in the third direction. At this time, the first sampling member 30 is located on the outer surface of the electrical connection structure 1 to facilitate the installation operation of the first sampling member 30 and the mounting cover 40.

[0061] Furthermore, the battery cell assembly 2 has a first side and a second side in the second direction. The electrical connection structure 1 is located on the first side of the battery cell assembly 2 in the second direction, and the mounting part 11 is located on the edge of the connector 10 facing the second side of the battery cell assembly 2 in the second direction. At this time, the mounting part 11 is hidden and housed between the two battery cell assemblies 2, which can reduce the space occupied by the electrical connection structure 1 in the second direction and prevent the mounting part 11 from being bumped by the outside during the installation of the electrical connection structure 1 or during the use of the battery cell assembly 2, thus ensuring the structural reliability of the mounting part 11 and ensuring the installation stability of the first sampling member 30.

[0062] In some embodiments, the mounting portion 11 protrudes from one side edge of the connector 10 in the second direction, the wire harness terminal 31 of the first sampling member 30 is located on the battery cell assembly 2, and the mounting portion 11 is also disposed adjacent to one side edge of the connector 10 in the first direction to shorten the length of the wire harness 32 between the first sampling member 30 and the wire harness terminal 31, so as to facilitate wiring.

[0063] According to some embodiments of this utility model, such as Figures 2-3 As shown, the mounting cover 40 has a first mounting portion 421 on at least one side in the first direction, and a wire-through hole 431 on at least one side in the second direction. Here, the first sampling member 30 is connected to the wiring harness terminal 31 via a wiring harness 32. The wiring harness 32 of the wiring harness terminal 31 extends through the wire-through hole 431 between the mounting cover 40 and the mounting portion 11 to electrically connect with the first sampling member 30. The first mounting portion 421 and the wire-through hole 431 are located on different surfaces of the mounting cover 40 to ensure that the wiring harness 32 can connect the wiring harness terminal 31 and the first sampling member 30 while meeting the positioning requirements of the mounting cover 40 and the mounting portion 11.

[0064] According to some embodiments of this utility model, such as Figures 2-3 As shown, the mounting cover 40 includes an end plate 41, a first side plate 42, and a second side plate 43. The end plate 41 is located on the third-direction side of the mounting portion 11 and is spaced apart from the third-direction surface of the mounting portion 11. The third-direction intersects with both the second and first directions. The first side plate 42 is located on the surface of the end plate 41 facing the mounting portion 11 and is configured as two. The two first side plates 42 are spaced apart in the first direction of the end plate 41, and at least one first side plate 42 is provided with a first mounting portion 421. The second side plate 43 is located on the surface of the end plate 41 facing the mounting portion 11 and is configured as two. The two second side plates 43 are spaced apart in the second direction of the end plate 41, and at least one second side plate 43 is provided with a wire hole 431. In some embodiments, the first side plate 42 protrudes from the mounting portion 11 in the third-direction direction, and the free end of the second side plate 43 abuts against the surface of the mounting portion 11 facing the end plate 41 in the third-direction direction, so as to satisfy the positioning requirements of the mounting cover 40 and the mounting portion 11 while ensuring that the first sampling member 30 has sufficient installation space.

[0065] In some embodiments, the mounting cover 40 is made of plastic.

[0066] In some embodiments, the first sampling member 30 is bonded to the surface of the mounting portion 11 facing the end plate 41.

[0067] According to some embodiments of this utility model, such as Figures 2-3 As shown, each of the two first side plates 42 is provided with a first assembly part 421; each of the two second side plates 43 is provided with a wire through hole 431. Furthermore, the two first assembly parts 421 are symmetrically designed, and the two wire through holes 431 are also symmetrically designed, so that even when the mounting cover 40 is rotated 180° and installed backwards, the wire harness 32 can still be led out normally, which plays a role in preventing mistaken installation.

[0068] According to some embodiments of this utility model, such as Figures 2-3 As shown, the end plate 41 has at least one through hole 411 extending through it in the third direction. This can be used to reduce weight and also facilitates machine clamping of the mounting cover 40 during machining or when it mates with the mounting part 11. In some embodiments, the shapes of at least two through holes 411 may be the same or different.

[0069] According to some embodiments of this utility model, such as Figures 2-3 As shown, at least one second side plate 43 has a protective protrusion 432 protruding from the surface opposite to the other second side plate 43. The protective protrusion 432 has a wire hole 431. The protective protrusion 432 can be used to protect the connection between the first sampling member 30 and the wire harness 32, prevent the wire harness 32 from breaking, thereby reducing the loss of the electrical connection structure and extending the service life of the electrical connection structure.

[0070] According to some embodiments of this utility model, such as Figures 2-3 As shown, the first assembly part 421 is constructed as an assembly protrusion, and the second assembly part 111 is constructed as an assembly groove adapted to receive the assembly protrusion. The assembly protrusion protrudes from the second side plate 43 in a third direction, and part of the assembly protrusion is adapted to deform. Specifically, during installation, the assembly protrusion of the mounting cover 40 is aligned with the assembly groove of the mounting part 11, and then the mounting cover 40 is pressed to deform the assembly protrusion, so as to position and engage the assembly protrusion with the assembly groove, ensuring that the position of the first sampling member 30 can be restricted after the mounting cover 40 is installed.

[0071] In some embodiments, the first assembly part 421 and the second assembly part 111 can be positioned and fitted by accommodating the assembly protrusion through an assembly groove. This type of fit is simple, quick, and highly feasible. In other embodiments, the first assembly part 421 and the second assembly part 111 can also be two corresponding holes. Fasteners can be inserted through these two holes to position and fit the mounting cover 40 and the mounting part 11. This type of fit is simple, but compared to the aforementioned groove and protrusion fit, it has more parts and is more time-consuming to install. The first assembly part 421 and the second assembly part 111 can also be positioned and fitted by other methods (such as welding, bonding, etc.), which can be designed according to actual needs and are not limited here.

[0072] According to some embodiments of this utility model, such as Figure 3 As shown, a stop protrusion 423 is also formed at the end of the mounting protrusion away from the end plate 41 in the third direction. The stop protrusion 423 is located on the surface of the mounting protrusion facing the mounting portion 11 in the second direction, and the surface of the stop protrusion 423 facing the end plate 41 is adapted to abut against the surface of the mounting portion 11 away from the end plate 41, so as to improve the connection stability between the mounting cover 40 and the mounting portion 11 and prevent the mounting cover 40 from detaching from the mounting portion 11.

[0073] Here, during the installation of the mounting cover 40 and the mounting part 11, the mounting protrusion can first deform outward so that the mounting protrusion is aligned with the mounting groove. Then, the mounting protrusion is pressed so that it is received in the mounting groove, and the surface of the stop protrusion 423 facing the end plate 41 is adapted to stop the mounting part 11 away from the surface of the end plate 41, thereby realizing the installation of the first sampling member 30.

[0074] According to some embodiments of this utility model, such as Figure 3 As shown, a positioning groove 422 is provided on the mounting protrusion; the mounting portion 11 has a mounting groove formed on at least one side in the first direction, and a positioning protrusion 112 is formed in the mounting groove in the first direction to be suitable for positioning and engaging with the positioning groove 422. Here, the engagement of the mounting protrusion and the mounting groove can limit the relative position of the mounting cover 40 and the mounting portion 11. In order to ensure a stable connection between the mounting cover 40 and the mounting portion 11, the positioning protrusion 112 and the positioning groove 422 can be designed. After the mounting protrusion and the mounting groove are positioned and engaged, the positioning protrusion 112 can be positioned and engaged with the positioning groove 422 to limit the relative position of the mounting protrusion and the mounting groove, thereby achieving a stable connection between the mounting cover 40 and the mounting portion 11 and ensuring the structural reliability of the electrical connection structure 1.

[0075] According to some embodiments of this utility model, such as Figure 2As shown, the connector 10 includes a first connecting portion 21 and a second connecting portion 22, which are electrically connected to the two battery cell groups 2 respectively. Specifically, the first connecting portion 21 and the second connecting portion 22 are electrically connected to the two battery cell groups 2 respectively, and the connector 10 electrically connects the first connecting portion 21 and the second connecting portion 22.

[0076] In some embodiments, the connector 10 is connected to the first connecting portion 21 and the second connecting portion 22 by welding. When the first sampling element 30 is used to collect the temperature of the connector 10 of the electrical connection structure 1, since the first connecting portion 21 and the second connecting portion 22 provided on the connector 10 are electrically connected to the two battery cell groups 2 respectively, and the connector 10 connects the first connecting portion 21 and the second connecting portion 22, the first sampling element 30 can detect the temperature abnormality when the welding between the connector 10 and the first connecting portion 21 or the second connecting portion 22 is abnormal. The first sampling element 30 is located at the mounting portion 11 of the connector 10, which enables the first sampling element 30 to detect the temperature of the connector 10 and also to identify welding risks, thereby improving production yield.

[0077] In some embodiments, the first connecting part 21 and the second connecting part 22 are fixedly connected to the battery cell assembly 2 by laser welding.

[0078] According to some embodiments of this utility model, such as Figure 3 As shown, a high-temperature resistant film 113 is provided on the surface of the mounting part 11 facing the first sampling element 30. The high-temperature resistant film 113 can provide heat insulation protection for the first sampling element 30, thereby protecting the first sampling element 30, extending the service life of the first sampling element 30, and improving the reliability, accuracy and lifespan of the first sampling element 30 in high-temperature environments.

[0079] The battery pack according to this utility model is briefly described below.

[0080] The battery pack according to this utility model includes the electrical connection structure 1 described in any of the above embodiments and at least two cell groups 2, with the connector 10 electrically connected to each of the at least two cell groups 2. Because the battery pack according to this utility model is equipped with the electrical connection structure 1 described in the above embodiments, the battery pack has higher safety, lower cost, and higher assembly efficiency.

[0081] In existing technologies, a voltage acquisition structure is designed on the electrical connection structure to collect the voltage of the electrical connection structure in order to obtain the cell voltage. However, since temperature monitoring and voltage acquisition are performed separately, they cannot be integrated into a unified whole, resulting in high-power battery packs having multiple structures and high costs. Furthermore, in existing technologies, the voltage acquisition structure is fixed to the electrical connection structure by riveting, which requires additional riveting equipment, increasing costs and requiring manual operation, which is inconvenient. The riveting method also requires rivets and corresponding materials, resulting in numerous components and increasing the cost and assembly process of the battery pack.

[0082] According to some embodiments of this utility model, such as Figures 2-3 As shown, the connector 10 includes a first connecting portion 21 and a second connecting portion 22, which are electrically connected to two battery cell groups 2 respectively. The electrical connection structure 1 also includes a first bracket 51 and a second bracket 52, which are positioned and connected to the two battery cell groups 2 respectively. The first connecting portion 21 is connected to the first bracket 51, and the second connecting portion 22 is connected to the second bracket 52. In some embodiments, the battery cell group 2 is composed of multiple battery cells. The first bracket 51 is located at one end of one of the battery cell groups 2 in a first direction to connect with the same end of the multiple battery cells and to provide a platform for the first connecting portion 21 to be mounted on the battery cell group 2. Similarly, the second bracket 52 is located at one end of the other battery cell group 2 in a first direction to connect with the same end of the multiple battery cells and to provide a platform for the second connecting portion 22 to be mounted on the battery cell group 2.

[0083] According to some embodiments of this utility model, such as Figures 5-6 As shown, the battery pack also includes a second sampling element 60. The second sampling element 60 is disposed on the first bracket 51 and electrically connected to the first connecting portion 21, or the second sampling element 60 is disposed on the second bracket 52 and electrically connected to the second connecting portion 22. Specifically, the data collected by the second sampling element 60 and the first sampling element 30 may be different. The first sampling element 30 and the second sampling element 60 are respectively disposed on the electrical connection structure 1 to collect multiple data of the electrical connection structure 1. In some embodiments, the first sampling element 30 is suitable for collecting the temperature of the connector 10, and the second sampling element 60 is suitable for collecting the voltage of the electrical connection structure 1.

[0084] In some embodiments, the second sampling member 60 is welded to the first connecting portion 21 or the second connecting portion 22.

[0085] In some embodiments, the second sampling element 60 is a nickel sheet.

[0086] According to some embodiments of this utility model, such as Figure 6As shown, the second sampling component 60 is provided with a limiting hole 61, and the first bracket 51 or the second bracket 52 is provided with a limiting protrusion 521 suitable for engaging with the limiting hole 61. Specifically, the second sampling component 60 can be fixed to the first bracket 51 or the second bracket 52 by the limiting engagement of the limiting protrusion 521 with the limiting hole 61, so as to facilitate the subsequent welding connection of the second sampling component 60 to the first connecting part 21 or the second connecting part 22. Here, during manual assembly, it is only necessary to press the second sampling component 60 onto the first bracket 51 or the second bracket 52 for assembly. The limiting hole 61 on the second sampling component 60 is used for positioning, and the limiting protrusion 521 on the first bracket 51 or the second bracket 52 is designed as a limiting structure.

[0087] According to some embodiments of this utility model, such as Figure 6 As shown, the first bracket 51 or the second bracket 52 is provided with a latching part 522. The latching part 522 is configured as two parts arranged opposite each other in the second direction, and the two latching parts 522 are adapted to engage with the second sampling member 60. Here, to prevent the second sampling member 60 from rotating after installation, a limiting structure is needed. The latching part 522 can be added to the first bracket 51 or the second bracket 52. The latching part 522 can be configured as two parts arranged opposite each other in the second direction to maximize its anti-rotation effect after engaging with the second sampling member 60. The latching part 522 can, after engaging with the second sampling member 60, tightly press the second sampling member 60 against the first bracket 51 or the second bracket 52 provided with the latching part 522.

[0088] In some embodiments, a notch may be made on the second sampling member 60, and a limiting protrusion 521 may be added to the first bracket 51 or the second bracket 52. The fitting gap here should be no more than 0.1mm to maximize the anti-rotation effect and reduce the number of components in the electrical connection structure 1, thereby reducing the cost of the battery pack and reducing manual operation and assembly processes.

[0089] According to some embodiments of this utility model, the connector 10 is adapted to be electrically connected to the lead-out terminal of the battery cell group 2. The battery cell group 2 is composed of multiple battery cells, and the lead-out terminal is the positive or negative terminal of the battery cell at the end of the battery cell group 2. As mentioned above, the battery cell group 2 is composed of multiple battery cells, and the multiple battery cells of the same battery cell group 2 can be electrically connected. The connector 10 is electrically connected to the positive or negative terminal of the battery cell located at the end of two battery cell groups 2, respectively, so as to electrically connect the two battery cell groups 2.

[0090] The electrical equipment according to this utility model is briefly described below.

[0091] The electrical device according to this utility model includes the battery pack described in any of the above embodiments. Since the electrical device according to this utility model is equipped with the battery pack described in the above embodiments, the electrical device has better safety performance.

[0092] In summary, the electrical connection structure 1 of this utility model is designed with a first sampling element 30 to collect the temperature of the connector 10, which can monitor the temperature of the electrical connection structure 1 at the bridging position between the battery cells 2, thereby improving the safety of the battery pack equipped with the electrical connection structure 1.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0094] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. An electrical connection structure (1), characterized in that The electric connection structure (1) is suitable for electrically connecting at least two groups of electric cores (2) and comprises: a connecting piece (10) electrically connected with the at least two groups of electric cores (2) respectively; a first sampling piece (30) for collecting temperature and arranged on the connecting piece (10).

2. The electrical connection structure (1) according to claim 1, characterized in that The connecting piece (10) is provided with a mounting portion (11) suitable for mounting the first sampling piece (30); The electric connection structure (1) further comprises a mounting cover (40) suitable for cooperating with the mounting portion (11) to mount the first sampling piece (30) on the mounting portion (11).

3. The electrical connection structure (1) according to claim 2, characterized in that The mounting cover (40) is provided with a first assembly portion (421), and the mounting portion (11) is provided with a second assembly portion (111) suitable for cooperating with the first assembly portion (421).

4. The electrical connection structure (1) according to claim 3, characterized in that The connecting piece (10) is electrically connected with the two groups of electric cores (2) on both sides in a first direction, and the mounting portion (11) is protrudingly arranged on one side edge of the connecting piece (10) in a second direction intersecting the first direction.

5. The electrical connection structure (1) according to claim 4, characterized in that At least one side of the mounting cover (40) in the first direction is provided with the first assembly portion (421), and at least one side of the mounting cover (40) in the second direction is provided with a wire passing hole (431).

6. The electrical connection structure (1) according to claim 5, characterized in that The mounting cover (40) comprises: an end plate (41) arranged on one side of the mounting portion (11) in a third direction and spaced apart from the surface of the mounting portion (11) in the third direction, the third direction intersecting the second direction and the first direction respectively; a first side plate (42) arranged on the surface of the end plate (41) facing the mounting portion (11) and configured as two, the two first side plates (42) being spaced apart in the first direction of the end plate (41), and at least one first side plate (42) being provided with the first assembly portion (421); a second side plate (43) arranged on the surface of the end plate (41) facing the mounting portion (11) and configured as two, the two second side plates (43) being spaced apart in the second direction of the end plate (41), and at least one second side plate (43) being provided with the wire passing hole (431).

7. The electrical connection structure (1) according to claim 6, characterized in that The two first side plates (42) are respectively provided with the first assembly portion (421); and the two second side plates (43) are respectively provided with the wire passing hole (431).

8. The electrical connection structure (1) according to claim 6, characterized in that The end plate (41) is provided with at least one through hole (411) in the third direction.

9. The electrical connection structure (1) according to claim 6, characterized in that The surface of at least one second side plate (43) facing away from another second side plate (43) is protrudingly formed with a protective protrusion (432) provided with the wire passing hole (431).

10. The electrical connection structure (1) according to claim 6, characterized in that The first assembly part (421) is configured as an assembly protrusion, the second assembly part (111) is configured as an assembly groove suitable for accommodating the assembly protrusion, the assembly protrusion is arranged to protrude from the second side plate (43) in the third direction, and part of the assembly protrusion is suitable for deformation.

11. The electrical connection structure (1) according to claim 10, characterized in that The assembly protrusion is further provided with a stop protrusion (423) away from the end of the end plate (41) in the third direction, the stop protrusion (423) is located on the surface of the assembly protrusion towards the mounting part (11) in the second direction, and the surface of the stop protrusion (423) towards the end plate (41) is suitable for stopping against the surface of the mounting part (11) away from the end plate (41).

12. The electrical connection structure (1) according to claim 10, characterized in that A positioning groove (422) is formed on the assembly protrusion; at least one side of the mounting part (11) in the first direction is formed with the assembly groove, and the assembly groove is formed with a positioning protrusion (112) suitable for positioning cooperation with the positioning groove (422) in the first direction.

13. The electrical connection structure (1) according to any one of claims 1-12, characterized in that The connecting piece (10) comprises a first connecting part (21) and a second connecting part (22), and the first connecting part (21) and the second connecting part (22) are respectively electrically connected with the two battery cell groups (2).

14. The electrical connection structure (1) according to any one of claims 2-12, characterized in that The surface of the mounting part (11) towards the first sampling piece (30) is provided with a high-temperature-resistant film (113).

15. A battery pack, characterized by The battery pack comprises the electric connection structure (1) and at least two battery cell groups (2) according to any one of claims 1-14, and the connecting piece (10) is respectively electrically connected with the at least two battery cell groups (2).

16. The battery pack of claim 15, wherein, The connecting piece (10) comprises a first connecting part (21) and a second connecting part (22), and the first connecting part (21) and the second connecting part (22) are respectively electrically connected with the two battery cell groups (2); The battery pack further comprises: A first support (51) and a second support (52), the first support (51) and the second support (52) are respectively positioned and connected with the two battery cell groups (2), the first connecting part (21) is connected with the first support (51), and the second connecting part (22) is connected with the second support (52).

17. The battery pack of claim 16, wherein, Further comprising: A second sampling piece (60) arranged on the first support (51) and electrically connected with the first connecting part (21), or arranged on the second support (52) and electrically connected with the second connecting part (22).

18. The battery pack of claim 17, wherein, The second sampling piece (60) is provided with a limiting hole (61), and the first support (51) or the second support (52) is provided with a limiting protrusion (521) suitable for cooperating with the limiting hole (61).

19. The battery pack of claim 17, wherein, The first support (51) or the second support (52) is provided with a buckle part (522), the buckle part (522) is configured to be oppositely arranged in the second direction, and the two buckle parts (522) are suitable for buckle cooperation with the second sampling piece (60).

20. The battery pack of any one of claims 15-19, wherein, The connecting piece (10) is adapted to be conductively connected with a lead-out pole of the battery cell group (2), the battery cell group (2) is composed of a plurality of battery cells, and the lead-out pole is a positive pole or a negative pole of an end battery cell of the battery cell group (2).

21. An electrical device, comprising: The battery pack comprises the battery pack according to any one of claims 15-20.

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