Electrical connection assembly, battery assembly, and vehicle

Abstract

Electrical connection assembly, battery assembly, and vehicle. The electrical connection assembly includes an electrical connector and an insulating portion, the electrical connector being used to connect a plurality of battery cells, and the insulating member being disposed on the electrical connector and protruding outward from a side of the electrical connector remote from the battery cells.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This disclosure claims priority to and the benefit of Chinese Patent Application No. 202211724588.6, filed December 30, 2022. The entire contents of the above application are incorporated herein by reference.

[0002] The present disclosure is in the technical field of battery construction, and more particularly, the present disclosure relates to an electrical connection assembly, a battery assembly, and a vehicle. [Background technology]

[0003] In the prior art, in order to ensure the durability of the power battery system, multiple battery cores are usually connected in series to form a battery assembly, and the multiple battery cores are usually electrically connected to each other by connecting sheets.

[0004] However, since the battery assembly is usually installed in a metal housing, the connection sheet is in a high voltage state during use of the battery assembly, and the electrical connection sheet may discharge high voltage to surrounding conductors, causing leakage current. Summary of the Invention

[0005] Embodiments of the present disclosure aim to provide novel technical solutions for electrical connection assemblies, battery assemblies, and vehicles.

[0006] According to a first aspect of an embodiment of the present disclosure, an electrical connection assembly is provided, the electrical connection assembly including an electrical connection member configured to connect a plurality of battery cores, and an insulating member disposed on the electrical connection member and protruding outward from a side of the electrical connection member away from the battery cores.

[0007] Optionally, in the thickness direction of the electrical connection assembly, the thickness of the insulating member is equal to or greater than the thickness of the electrical connection member.

[0008] In some cases, the insulating member includes a first insulating piece disposed along the edge of the electrical connection member and a second insulating piece protruding outward from the surface of the electrical connection member away from the battery core.

[0009] Optionally, the second insulating piece is provided with an avoidance hole, the avoidance hole being configured to allow the electrical connection member to be electrically connected to the sampling circuit.

[0010] Optionally, the insulating member further includes a third insulating piece, which protrudes outward from the side of the electrical connection member that is closer to the battery core.

[0011] Optionally, the electrical connection member is provided with a fixing hole, which is configured to connect to the battery core.

[0012] According to a second aspect of an embodiment of the present disclosure, there is provided a battery assembly including a plurality of battery cores, a housing, and an electrical connection assembly according to the first aspect, wherein the electrical connection assembly and the plurality of battery cores are disposed within the housing, the plurality of battery cores are disposed in parallel, the plurality of battery cores are connected in series or in parallel by the electrical connection assembly, and a portion of the insulating member protruding outward from a side of the electrical connection member away from the battery cores separates the electrical connection member from the housing.

[0013] In some cases, multiple battery cores are stacked along a preset direction, terminals are provided on the battery cores, the battery cores have two side surfaces arranged opposite each other along the preset direction, one of the two side surfaces is provided with a groove, and the terminal is arranged in the groove, or the terminal is arranged on the other of the two side surfaces.

[0014] In some cases, the terminals include a positive terminal and a negative terminal, the electrical connection member includes at least one first connection sheet and at least one second connection sheet, and the positive terminal of one battery core among the at least two adjacent battery cores is connected to the negative terminal of another battery core among the at least two adjacent battery cores by the first connection sheet corresponding to the positive terminal and the second connection sheet corresponding to the negative terminal.

[0015] In some embodiments, the first connection sheet includes a first connection piece and a second connection piece that are arranged and connected in a curved manner, the second connection sheet includes a third connection piece and a fourth connection piece that are arranged and connected in a curved manner, the third connection piece is arranged on one side of the first connection piece in the thickness direction, the third connection piece and the first connection piece are attached to each other and connected by a fastener, and the second connection piece and the fourth connection piece are arranged opposite each other.

[0016] In some cases, the electrical connection assembly further includes a fastener, wherein the first connection piece has a first through hole and the third connection piece has a second through hole, and when the first connection piece and the third connection piece are attached to each other, the first through hole corresponds to and communicates with the second through hole, and the fastener is inserted into the first through hole and the second through hole to secure the first connection piece and the third connection piece.

[0017] Optionally, the first connecting piece is provided with a fastener and the third connecting piece is provided with a third through hole, and when the first connecting piece and the third connecting piece are attached to each other, the fastener is inserted into the third through hole to secure the first connecting piece and the third connecting piece.

[0018] In some cases, the insulating member includes a first insulating member arranged on the peripheral side of the first connection sheet and a second insulating member arranged on the peripheral side of the second connection sheet, the first insulating member protruding outward from the side of the first connection sheet farther from the corresponding battery core, and the second insulating member protruding outward from the side of the second connection sheet farther from the corresponding battery core.

[0019] According to a third aspect of an embodiment of the present disclosure, there is further provided a vehicle including a battery assembly according to the second aspect.

[0020] The technical effects of the embodiments of the present disclosure are as follows:

[0021] The electrical connection assembly provided in the present disclosure includes an electrical connection member and an insulating member, and is configured to connect multiple battery cores. When the electrical connection assembly is installed in a housing, the insulating member protrudes outward from the side of the electrical connection member farther from the battery cores. The portion of the insulating member protruding outward from the surface of the electrical connection member separates the electrical connection member from the housing, and the electrical connection member does not directly contact the inner wall of the housing, thereby reducing the possibility of leakage current.

[0022] Furthermore, when subjected to an external force, the housing is easily deformed under the external force. The housing can first contact the insulating member, and the insulating member can absorb the external force, thereby reducing the impact of the external force on the electrical connection member. In other words, the insulating member has a good buffering function, thereby improving the stability and safety of the electrical connection assembly during use.

[0023] Other features and advantages of the present disclosure will become apparent from the following detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings.

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and are used together with the specification to explain the principles of the disclosure. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 1 is a first structural diagram of a battery assembly according to a first embodiment of the present disclosure. [Figure 2]FIG. 2 is a second structural diagram of the battery assembly according to the first embodiment of the present disclosure. [Figure 3] FIG. 2 is a first structural diagram of an electrical connection assembly according to a first embodiment of the present disclosure. [Figure 4] FIG. 2 is a first structural diagram of a positive connection member according to the first embodiment of the present disclosure. [Figure 5] FIG. 4 is a second structural diagram of the positive connection member according to the first embodiment of the present disclosure. [Figure 6] FIG. 2 is a first structural diagram of a second connecting member according to the first embodiment of the present disclosure. [Figure 7] FIG. 10 is a second structural view of the second connecting member according to the first embodiment of the present disclosure. [Figure 8] FIG. 10 is a first structural diagram of a battery assembly according to a second embodiment of the present disclosure. [Figure 9] FIG. 10 is a second structural diagram of a battery assembly according to a second embodiment of the present disclosure. [Figure 10] FIG. 10 is a first structural diagram of an electrical connection assembly according to a second embodiment of the present disclosure. [Figure 11] FIG. 10 is a second structural diagram of an electrical connection assembly according to a second embodiment of the present disclosure. [Figure 12] FIG. 10 is a first structural diagram of a first connection sheet according to a second embodiment of the present disclosure. [Figure 13] FIG. 10 is a second structural diagram of the first connection sheet according to the second embodiment of the present disclosure. [Figure 14] FIG. 10 is a first structural diagram of a second connection sheet according to a second embodiment of the present disclosure. [Figure 15] FIG. 10 is a second structural diagram of a second connection sheet according to a second embodiment of the present disclosure. [Figure 16] FIG. 10 is a third structural diagram of a battery core and electrical connection assembly according to the second embodiment of the present disclosure. [Figure 17] 1 is a schematic diagram of a vehicle structure according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0026] Next, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specified, the reverse arrangement of components and steps, formulas, and numerical values ​​described in the embodiments do not limit the scope of the present disclosure.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to constitute a limitation on the disclosure and its application or uses.

[0028] Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, these techniques, methods, and devices should be considered part of this specification.

[0029] In all examples shown and discussed herein, any particular values ​​should be considered merely as illustrative and not limiting, and thus other examples of exemplary embodiments may have different values.

[0030] It should be noted that like numerals and letters indicate like items in the following attached drawings, and therefore, once an item is defined in one attached drawing, that item need not be further discussed in subsequent attached drawings.

[0031] 1 to 16 , an embodiment of the present disclosure discloses an electrical connection assembly 100. The electrical connection assembly 100 includes an electrical connection member 2 and an insulating member 3. The electrical connection member 2 is configured to connect to multiple battery cores 1, for example, the electrical connection member 2 is configured to connect to terminals of multiple battery cores 1. The insulating member 3 is disposed on the electrical connection member 2, and protrudes outward from the side of the electrical connection member 2 that is farther from the battery cores 1. In some cases, the electrical connection member 2 is configured to connect multiple adjacent battery cores 1, and in the description of the present disclosure, "multiple" means at least two.

[0032] Referring to FIG. 2, the electrical connection assembly 100 includes an electrical connection member 2 and an insulating member 3 disposed on the electrical connection member 2 .

[0033] The electrical connection members 2 are arranged corresponding to the terminals of the plurality of battery cores 1. The electrical connection members 2 are made of a metal material such as aluminum or other materials. The electrical connection members 2 are fixedly connected to the terminals through welding or other methods, and the electrical connection between the electrical connection members 2 and the terminals is used to implement electrical connection between the plurality of battery cores 1. It should be noted that the electrical connection between the plurality of battery cores 1 includes parallel connection and, of course, also includes series connection.

[0034] The side of the electrical connection member 2 that is closer to the battery core 1 is fixedly connected to a terminal, and the insulating member 3 protrudes outward from the side of the electrical connection member 2 that is farther from the battery core 1 .

[0035] In other words, there is a difference in height between the surface of the electrical connection member 2 farther from the battery core 1 and the insulating member 3, and a step structure is formed between the surface of the electrical connection member 2 farther from the battery core 1 and the insulating member 3.

[0036] The insulating member 3 may be made of an insulating material such as rubber, and therefore isolates the electrical connection member 2 to reduce the possibility that the electrical connection member 2 will discharge high voltage to surrounding conductors and cause a current leakage, since the electrical connection member 2 is in a high voltage state during use of the battery assembly 200.

[0037] By using this structure, when the electrical connection assembly 100 disclosed in the present disclosure is installed in the housing 5, one side of the electrical connection member 2 is connected to the battery core 1, and the side of the electrical connection member 2 remote from the battery core 1 is close to the housing 5. Since the insulating member 3 protrudes outward from the side of the electrical connection member 2 remote from the battery core 1, the portion of the insulating member 3 protruding outward from the side of the electrical connection member 2 separates the electrical connection member 2 from the housing 5, and the electrical connection member 2 does not directly contact the inner wall of the housing 5, thereby reducing the possibility of electrical leakage of the battery core 1.

[0038] Furthermore, when subjected to an external force, the housing 5 is easily deformed under the external force. The housing 5 can first come into contact with the insulating member 3, which can absorb the external force and thereby reduce the impact of the external force on the electrical connection member 2. In other words, the insulating member 3 has a good buffering function, thereby improving the stability and safety of the electrical connection member 2 during use.

[0039] For example, the insulating member 3 is disposed at the edge position of the electrical connection member 2, that is, the insulating member 3 is disposed along the edge position of the electrical connection member 2. The electrical connection member 2 is a metal member having a certain thickness. The insulating member 3 is connected to the side wall of the electrical connection member 2. The electrical connection member 2 is disposed inside the insulating member 3. Naturally, the arrangement of the insulating member 3 is not limited thereto, as long as the insulating member 3 protrudes outward from the side of the electrical connection member 2 farther from the battery core 1.

[0040] In some embodiments, in the thickness direction of the electrical connection assembly 100 (i.e., the vertical direction in FIG. 2 ), the thickness of the insulating member 3 is equal to or greater than the thickness of the electrical connection member 2 to improve the reliability of use of the insulating member 3 and the connection reliability between the insulating member 3 and the electrical connection member 2.

[0041] In some embodiments of the present disclosure, the insulating member 3 includes a first insulating piece 31 arranged along the edge of the electrical connection member 2 and a second insulating piece 32 protruding outward from the surface of the electrical connection member 2 away from the battery core 1.

[0042] 3 and 4, the insulating member 3 includes a first insulating piece 31 and a second insulating piece 32. The first insulating piece 31 is disposed around the edge contour of the electrical connection member 2, and the first insulating piece 31 is fixedly connected to the sidewall edge of the electrical connection member 2. The first insulating piece 31 is set, for example, in a ring shape.

[0043] The second insulating piece 32 and the first insulating piece 31 are, for example, integrally connected to each other. The second insulating piece 32 protrudes outward from the surface of the electrical connection member 2 on the side farther from the battery core 1. A step structure is formed between the second insulating piece 32 and the surface of the electrical connection member 2.

[0044] It should be noted that the second insulating piece 32 may completely cover the first insulating piece 31, that is, the second insulating piece 32 completely overlaps the first insulating piece 31. Of course, the second insulating piece 32 may instead only partially cover the first insulating piece 31. For example, there may be at least three second insulating pieces 32, and the multiple second insulating pieces 32 may be spaced apart within the mounting area, with the three second insulating pieces 32 forming a plane.

[0045] It can be seen that regardless of whether the second insulating piece 32 completely covers the first insulating piece 31, when the electrical connection member 2 is installed in the housing 5, the second insulating piece 32 forms a gap between the electrical connection member 2 and the inner wall of the housing 5 in the thickness direction of the electrical connection member 2. When the housing 5 is impacted by an external force, the insulating piece 3 has a good buffering function, thereby improving the stability and safety of the electrical connection member 2 during use.

[0046] In some embodiments of the present disclosure, the second insulating piece 32 is provided with an escape hole 30 , which is configured to allow the electrical connection member 2 to be electrically connected to the sampling circuit 4 .

[0047] 2 and 3, to facilitate real-time monitoring of the voltage at the electrical connection locations of each battery core 1, the electrical connection assembly 100 is typically externally connected to a sampling circuit 4, i.e., a flexible sampling circuit.

[0048] An electrical connection is made between the sampling circuit 4 and the electrical connection member 2 by a metal sheet, such as a Ni sheet. The second insulating piece 32 is provided with an escape hole 30. There is at least one escape hole 30, which is configured to allow the metal sheet to pass through to make the connection between the electrical connection member 2 and the sampling circuit 4.

[0049] In this embodiment of the present disclosure, the insulating member 3 further includes a third insulating piece 35 that protrudes outward from the side of the electrical connection member 2 that is closer to the battery core 1 .

[0050] 11, the insulating member 3 includes a first insulating piece 31, a second insulating piece 32, and a third insulating piece 35 that are connected together. The first insulating piece 31 is connected to the electrical connection member 2. The second insulating piece 32 is disposed on a side of the electrical connection member 2 that is farther from the corresponding battery core 1, and the third insulating piece 35 is disposed on a side of the electrical connection member 2 that is closer to the corresponding battery core 1. The corresponding battery cores 1 refer to the battery cores 1 that are connected to the electrical connection member 2, respectively.

[0051] In some embodiments of the present disclosure, the electrical connection member 2 is provided with a fixing hole 20, and the fixing hole 20 is configured to connect to the battery core 1.

[0052] 5 to 7, the electrical connection member 2 is provided with a fixing hole 20. The fixing hole 20 extends through the electrical connection member 2 along the thickness direction of the electrical connection member 2. The fixing hole 20 is configured to receive a terminal of the battery core 1 to establish a mechanical connection and an electrical connection between the electrical connection member 2 and the battery core.

[0053] One embodiment of the present disclosure further discloses a battery assembly 200 including the above-described electrical connection assembly 100 and a plurality of battery cores 1. The plurality of battery cores 1 are arranged in parallel, and terminals are provided on surfaces of the battery cores 1 that are perpendicular to the stacking direction of the plurality of battery cores 1, and the plurality of battery cores 1 are connected in series or in parallel by the electrical connection assembly 100.

[0054] 1 to 7, one embodiment of the present disclosure discloses a battery assembly 200, for example, a VDA battery module. The battery assembly 200 includes a plurality of battery cores 1 arranged in parallel. The battery cores 1 are provided with terminals. The terminals may be arranged on a non-stack surface of the battery cores 1. Of course, the terminals may also be arranged on a stack surface of the battery cores 1.

[0055] In one embodiment of the present disclosure, the terminals are disposed on the non-stacked surfaces of the battery cores 1, i.e., the terminals are disposed on surfaces perpendicular to the stacking direction of the multiple battery cores 1. Specifically, the multiple battery cores 1 are arranged in parallel, the side walls of adjacent battery cores 1 are attached to each other, and the terminals may be disposed on the top or bottom of the battery cores 1. Of course, the terminals may instead be disposed on the other side walls of the non-stacked battery cores 1.

[0056] 1 and 2, in a specific embodiment of the present disclosure, a battery assembly 200 includes eight battery cores 1, with terminals disposed on the top of the battery cores 1. Two of the eight battery cores 1 are grouped together to obtain a total of four groups. The positive and negative terminals of each group of battery cores 1 are oriented in the same direction, and the positive and negative terminals of two adjacent groups of battery cores 1 are oriented in opposite directions.

[0057] Still referring to FIG. 2 , the electrical connection members 2 are disposed above the terminals and are fixedly connected to the terminals through welding or other methods. Furthermore, the electrical connection members 2 are made of a metal material such as aluminum. Therefore, when the electrical connection members 2 are fixedly connected to the terminals, an electrical connection between the electrical connection members 2 and the terminals can be established. The electrical connection members 2 are disposed corresponding to the terminals of at least two adjacent battery cores 1 so that an electrical connection between at least two adjacent battery cores 1 can be established. There are five electrical connection members 2. Two battery cores 1 in each group are connected in parallel by the electrical connection members 2, and two adjacent groups of battery cores 1 are connected in series by the electrical connection members 2. Therefore, the eight battery cores 1 form two parallel power supply circuits and four series power supply circuits by using five electrical connection members 2.

[0058] 3 to 7, the insulating member 3 includes a first insulating piece 31 arranged on the peripheral side of the electrical connection member 2 and a second insulating piece 32 arranged on the side of the first insulating piece 31 farther from the terminal. The lower surface of the electrical connection member 2 is fixedly connected to the terminal. The second insulating piece 32 protrudes outward from the upper surface of the electrical connection member 2, forming a step structure between the second insulating piece 32 and the upper surface of the electrical connection member 2.

[0059] It should be noted that the second insulating piece 32 may be disposed around the electrical connection member 2, for example, and the second insulating piece 32 may completely cover the first insulating piece 31, as shown in Figure 3. Of course, the second insulating piece 32 may instead only partially cover the first insulating piece 31.

[0060] 2, the terminals include a positive terminal 11 and a negative terminal 12, and the battery assembly 200 includes, from left to right, a first group of battery cores, a second group of battery cores, a third group of battery cores, and a fourth group of battery cores in succession. The positive terminal 11 of the first group of battery cores, which is the leftmost, is disposed at the rear of the battery cores 1 in FIG. 2, and the negative terminal 12 is disposed at the front of the battery cores 1 in FIG. 2. The positive terminal 11 of the second group of battery cores is disposed at the front of the battery cores 1 in FIG. 2, and the negative terminal 12 is disposed at the rear of the battery cores 1 in FIG. 2. The arrangement direction of the terminals of the third group of battery cores is the same as that of the first group of battery cores, and the arrangement direction of the terminals of the fourth group of battery cores is the same as that of the second group of battery cores.

[0061] Referring to Figures 2 and 3, the multiple electrical connection members 2 include a positive connection member 21, a first connection member 22, a second connection member 23, a third connection member 24, and a negative connection member 25, and power current flows through them in order.

[0062] The positive connection member 21 is fixedly connected to the two positive terminals 11 at the rear of the first group of battery cores 1, the first connection member 22 is fixedly connected to the two negative terminals 12 at the front of the first group of battery cores 1 and the two positive terminals 11 at the front of the second group of battery cores 1, the second connection member 23 is fixedly connected to the two negative terminals 12 at the rear of the second group of battery cores 1 and the two positive terminals 11 at the rear of the third group of battery cores 1, the third connection member 24 is fixedly connected to the two negative terminals 12 at the front of the third group of battery cores 1 and the two positive terminals 11 at the front of the fourth group of battery cores 1, and the negative connection member 25 is fixedly connected to the two negative terminals 12 at the rear of the fourth group of battery cores 1.

[0063] Optionally, the battery assembly 200 further includes a housing 5 , a cover plate 6 , a positive tab 7 , and a negative tab 8 .

[0064] Referring to FIG. 2 , the battery assembly 200 includes a housing 5. A cavity for accommodating the battery core 1 is provided inside the housing 5, and an opening is provided at the top of the housing 5. The battery core 1 is installed inside the housing 5, and terminals are disposed at the top of the battery core 1. An electrical connection member 2 is disposed above the terminals and fixedly connected to the terminals. A cover plate 6 covers the electrical connection member 2 and is connected to the housing 5, and an accommodation space for accommodating the battery core 1 and the electrical connection member 2 is formed between the cover plate 6 and the housing 5.

[0065] 3 to 5, the positive connection member 21 is fixedly connected to the positive tab 7, one end of the positive tab 7 is attached to and fixedly connected to the underside of the positive connection member 21, and the other end of the positive tab 7 extends through the housing 5 to the outside of the housing 5.

[0066] Similarly, the structure of the negative tab 8 is the same as that of the positive tab 7. The negative tab 8 is fixedly connected to the negative connection member 25. One end of the negative tab 8 is attached to and fixedly connected to the lower surface of the negative connection member 25, and the other end of the negative tab 8 extends through the housing 5 to the outside of the housing 5.

[0067] One embodiment of the present disclosure provides a battery assembly 200, specifically, for example, a VDA battery module. Terminals are disposed on a non-laminated surface of the battery core, such as the top of the battery core 1, and an electrical connection member 2 is fixedly connected to the terminal of the battery core 1. An insulating member 3 includes a first insulating piece 31 disposed on the periphery of the electrical connection member 2 and a second insulating piece 32 protruding from the surface of the electrical connection member 2 on the side farther from the battery core 1. The first insulating piece 31 provides insulation protection on the electrical connection member 2, and the second insulating piece 32 is disposed on the side of the electrical connection member 2 farther from the battery core 1 in the thickness direction. This does not affect the fixed connection between the electrical connection member 2 and the battery core 1. Furthermore, when the battery assembly 200 is impacted by an external force, the insulating member 3 has a good buffering function, thereby improving the stability and safety of the electrical connection member 2 during use.

[0068] One embodiment of the present disclosure further discloses a battery assembly 200 including a plurality of battery cores 1, a housing 5, and the aforementioned electrical connection assembly 100. The electrical connection assembly 100 and the plurality of battery cores 1 are disposed within the housing 5, and the plurality of battery cores 1 are arranged in parallel, and the plurality of battery cores 1 are connected in series or parallel by the electrical connection assembly 100. A portion of the insulating member 3 protruding outward from the side of the electrical connection member 2 remote from the battery cores 1 separates the electrical connection member 2 from the housing 5. It should be noted that in this embodiment of the present disclosure, the battery assembly 200 may be a battery module or a battery package.

[0069] Therefore, the electrical connection member 2 does not directly contact the inner wall of the housing 5, thereby reducing the possibility of leakage of the battery core 1. When subjected to an external force, the housing 5 is easily deformed under the external force. The housing 5 can first contact the insulating member 3, which can absorb the external force, thereby reducing the impact of the external force on the electrical connection member 2. In other words, the insulating member 3 has a good buffering function, thereby improving the stability and safety of the electrical connection member 2 during use.

[0070] 8 to 16, an embodiment of the present disclosure further discloses a battery assembly 200 including a plurality of battery cores 1. The plurality of battery cores 1 are arranged in parallel, and the plurality of battery cores 1 are connected in series or in parallel by an electrical connection assembly 100.

[0071] Specifically, the battery core 1 is provided with terminals, which are arranged on the stacked surfaces of the battery core 1. As shown in FIG. 8, the battery core 1 includes a first surface and a second surface arranged opposite each other. The first surface of the battery core 1 is stacked on the second surface of an adjacent battery core 1, and the second surface of the battery core 1 is stacked on the first surface of an adjacent battery core 1. The terminals are arranged on the first surface of the battery core. The terminals include a positive terminal 11 and a negative terminal 12. The positive terminal 11 and the negative terminal 12 are distributed, for example, on two ends of the first surface of the battery core 1.

[0072] The electrical connection assembly 100 is electrically connected to the terminals. The electrical connection assembly 100 includes an electrical connection member 2 and an insulating member 3. One end of the electrical connection member 2 is electrically connected to the positive terminal 11, and the other end of the electrical connection member 2 is electrically connected to the negative terminal 12. The specific structure of the electrical connection assembly 100 is not limited in this disclosure.

[0073] In this embodiment of the present disclosure, multiple battery cores 1 are stacked along a preset direction (e.g., the left-right direction in FIG. 8 ), terminals are provided on the battery cores 1, and the battery cores 1 have two side surfaces arranged opposite each other along the preset direction, with grooves 10 provided on one of the two side surfaces, and the terminals are disposed in the grooves, or the terminals are disposed on the other of the two side surfaces. The battery cores 1 are provided with grooves 10 on the surface on the stacked side, and terminals are provided on the battery cores 1, and the terminals are disposed in the grooves 10 or on the surface on the side farther from the grooves 10. In other words, multiple battery cores 1 are stacked along a preset direction, and the battery cores 1 are provided with grooves 10 on one surface of two sides in the preset direction. In this case, the terminals of the battery cores 1 are disposed in the grooves 10, or the terminals of the battery cores 1 are disposed on the surface on the side farther from the grooves 10.

[0074] Referring to Figure 8, a terminal is provided on a first surface of the battery core 1, and a groove 10 is provided on a second surface of the battery core 1, and when multiple battery cores 1 are stacked, the terminal arranged on one battery core 1 is arranged in the groove 10 on an adjacent battery core 1.

[0075] Of course, the groove 10 and the terminal may be provided on the first surface of the battery core 1. In this case, the terminal of the battery core 1 is disposed in the groove 10.

[0076] Of course, the grooves 10 may be provided on both the first surface and the second surface of the battery core 1, and the terminals of the battery core 1 may be disposed in the grooves 10 on the first surface or in the grooves 10 on the second surface.

[0077] In some embodiments of the present disclosure, the terminals include a positive terminal 11 and a negative terminal 12, and the electrical connection member 2 includes at least one first connection sheet 26 and at least one second connection sheet 27. The positive terminal 11 of one battery core 1 of at least two adjacent battery cores 1 is connected to the negative terminal 12 of the other battery core 1 of the at least two adjacent battery cores 1 by the first connection sheet 26 corresponding to the positive terminal 11 and the second connection sheet 27 corresponding to the negative terminal 12, in order to implement a series connection of the at least two adjacent battery cores 1.

[0078] In some embodiments, the first connection sheet 26 includes a first connection piece 261 and a second connection piece 262 that are arranged and connected in a curved manner, and the second connection sheet 27 includes a third connection piece 271 and a fourth connection piece 272 that are arranged and connected in a curved manner. The third connection piece 271 is arranged on one side of the first connection piece 261 in the thickness direction. The third connection piece 271 and the first connection piece 261 are attached and connected to each other, and the second connection piece 262 and the fourth connection piece 272 are arranged opposite each other.

[0079] The first connection sheet 26 includes a first connection piece 261 and a second connection piece 262 that are integrally connected, and the first connection piece 261 and the second connection piece 262 form a curved structure. The second connection sheet 27 includes a third connection piece 271 and a fourth connection piece 272 that are integrally connected, and the third connection piece 271 and the fourth connection piece 272 form a curved structure. The second connection sheet 27 is disposed on one side of the first connection sheet 26 in the thickness direction, the third connection piece 271 and the first connection piece 261 are attached to each other and connected by fasteners 28, and the second connection piece 262 and the fourth connection piece 272 are disposed opposite each other.

[0080] 8 and 9, the terminals include a positive terminal 11 and a negative terminal 12, which are respectively disposed on two sidewall positions of the battery core 1. In the same side direction of the terminals, the positive terminals 11 and the negative terminals 12 are alternately disposed, that is, on the same sidewall, two adjacent battery cores 1 have the positive terminal 11 and the negative terminal 12, respectively.

[0081] The electrical connection member 2 includes a first connection sheet 26 connected to the positive terminal 11 and a second connection sheet 27 connected to the negative terminal 12 .

[0082] 12 and 13 , the first connection sheet 26 includes a first connection piece 261 and a second connection piece 262 that are integrally connected to each other, and the first connection piece 261 and the second connection piece 262 form a curved structure. The bending angle between the first connection piece 261 and the second connection piece 262 is, for example, 90 degrees, but may of course be set to another angle. The second connection piece 262 and the positive terminal 11 are connected, for example, by a bolt, to realize a fixed connection between the first connection sheet 26 and the positive terminal 11.

[0083] 14 and 15, the second connection sheet 27 includes a third connection piece 271 and a fourth connection piece 272 that are integrally connected to each other, and the third connection piece 271 and the fourth connection piece 272 form a curved structure. The bending angle between the third connection piece 271 and the fourth connection piece 272 is, for example, 90 degrees, but may of course be set to another angle. The fourth connection piece 272 and the negative terminal 12 are connected, for example, by a bolt, to realize a fixed connection between the second connection sheet 27 and the negative terminal 12.

[0084] 10 and 11, the third connection piece 271 is disposed on one side of the first connection piece 261 in the thickness direction, and the first connection piece 261 and the third connection piece 271 are attached to each other and connected by fasteners 28, such as rivets. The second connection piece 262 and the fourth connection piece 272 are disposed opposite each other. When the bending angle between the first connection sheet 26 and the second connection sheet 27 is 90 degrees, the second connection piece 262 and the fourth connection piece 272 are disposed parallel to each other.

[0085] Referring to Figures 10 and 11, the first connection piece 261, the second connection piece 262, the third connection piece 271, and the fourth connection piece 272 surround an accommodating space having an opening on one side, where the open side faces the battery core 1.

[0086] In the prior art, the fixed connection between the electrical connection members 2 is usually achieved through welding. During processing, the electrical connection members 2 need to be supported by using auxiliary machinery. Furthermore, since the welding position is on the inner side of the electrical connection members 2 near the battery core 1, the welding is likely to be merely formal, which affects the stability of the electrical connection.

[0087] However, in the battery assembly 200 provided in the present disclosure, the terminals are disposed at sidewall positions of the battery cores 1. To facilitate series connection between multiple battery cores 1, the electrical connection member 2 includes a first connection sheet 26 and a second connection sheet 27, which are fixedly connected by fasteners 28, such as rivets. Compared with the prior art, the method of fixing the electrical connection member 2 in the present disclosure is simpler and the connection is stronger, thereby providing stability to the series connection between the battery cores 1, reducing processing difficulty, and improving processing accuracy.

[0088] In this embodiment of the disclosure, the electrical connection assembly 100 further includes a fastener 28, wherein the first connection piece 261 is provided with a first through hole 2610 and the third connection piece 271 is provided with a second through hole 2710, and when the first connection piece 261 and the third connection piece 271 are attached to each other, that is, when side A of the first connection piece 261 in FIG. 12 is attached to side C of the third connection piece 271 in FIG. 14, the first through hole 2610 corresponds to and communicates with the second through hole 2710. The fastener 28 is inserted into the first through hole 2610 and the second through hole 2710 to tack and secure the first connection piece 261 and the third connection piece 271.

[0089] Referring to FIG. 12, in one embodiment of the present disclosure, the first connecting piece 261 is provided with a first through hole 2610, which extends through the first connecting piece 261 along the thickness direction of the first connecting piece 261.

[0090] Referring to Figure 14, the third connecting piece 271 is provided with a second through hole 2710, which extends through the third connecting piece 271 along the thickness direction of the third connecting piece 271.

[0091] 11, when the first connecting piece 261 and the third connecting piece 271 are attached to each other, that is, when the surface A of the first connecting piece 261 in FIG. 12 is attached to the surface C of the third connecting piece 271 in FIG. 14, the first through hole 2610 corresponds to and communicates with the second through hole 2710. The fasteners 28 are inserted into the first through hole 2610 and the second through hole 2710 to fasten and secure the first connecting piece 261 and the third connecting piece 271, and the fasteners 28 are, for example, rivets.

[0092] Referring to FIG. 16, in this embodiment of the present disclosure, the first connecting piece 261 is provided with a fastener 28 and the third connecting piece 271 is provided with a third through hole 2711, and when the first connecting piece 261 and the third connecting piece 271 are attached to each other, that is, when surface A of the first connecting piece 261 in FIG. 12 is attached to surface C of the third connecting piece 271 in FIG. 14, the fastener 28 is inserted into the third through hole 2711 to fasten and secure the first connecting piece 261 and the third connecting piece 271.

[0093] 16 , in another embodiment of the present disclosure, the first connecting piece 261 is fixedly connected to the fastener 28, which is, for example, a rivet, and the first connecting piece 261 and the fastener 28 are connected through welding or integral formation. The third connecting piece 271 is provided with a third through hole 2711, which extends through the third connecting piece 271 along the thickness direction of the third connecting piece 271.

[0094] As shown in FIG. 11, when the first connecting piece 261 and the third connecting piece 271 are attached to each other, that is, when surface A of the first connecting piece 261 in FIG. 12 is attached to surface C of the third connecting piece 271 in FIG. 14, the fastener 28 is inserted into the third through hole 2711 and the rivet is pressed so that the first connecting piece 261 and the third connecting piece 271 are rivet-fastened and fixed.

[0095] In this embodiment of the present disclosure, the insulating member 3 includes a first insulating member 33 disposed on the peripheral side of the first connection sheet 26 and a second insulating member 34 disposed on the peripheral side of the second connection sheet 27. The first insulating member 33 is disposed around the outer peripheral edge of the first connection sheet 26, and the second insulating member 34 is disposed around the outer peripheral edge of the second connection sheet 27, so that the first insulating member 33 and the second insulating member 34 may have roughly ring-like structures. It can be understood that the ring-like structures corresponding to the first insulating member 33 and the second insulating member 34 may be flat ring-shaped or space ring-shaped. The first insulating member 33 protrudes outward from the side of the first connection sheet 26 away from the corresponding battery core 1, where the corresponding battery core 1 is the battery core 1 connected to the first connection sheet 26. The second insulating member 34 protrudes outward from the side of the second connection sheet 27 farther from the corresponding battery core 1 , where the corresponding battery core 1 is the battery core 1 connected to the second connection sheet 27 .

[0096] 10 and 11 , the first insulating member 33 is disposed on the peripheral side of the first connection sheet 26, and the second insulating member 34 is disposed on the peripheral side of the second connection sheet 27. In the thickness direction of the first connection sheet 26, portions of the first insulating member 33 protrude outward from the surfaces on two sides of the first connection sheet 26, and other portions of the first insulating member 33 protrude outward only from the surface on the side of the first connection sheet 26 that is farther from the second connection sheet 27 in the thickness direction of the first connection sheet 26. In the thickness direction of the second connection sheet 27, portions of the second insulating member 34 protrude outward from the surfaces on two sides of the second connection sheet 27, and other portions of the second insulating member 34 protrude outward only from the side of the second connection sheet 27 that is farther from the first connection sheet 26 in the thickness direction of the second connection sheet 27. For example, the first connection sheet 26 includes a first connection piece 261 and a second connection piece 262, and the second connection sheet 27 includes a third connection piece 271 and a fourth connection piece 272, and the first connection piece 261 is attached to the third connection piece 271. In the thickness direction of the first connection piece 261, a portion of the first insulating member 33 arranged on the first connection piece 261 protrudes outward only from the surface of the first connection piece 261 on the side farther from the third connection piece 271. In the thickness direction of the third connection piece 271, a portion of the second insulating member 34 arranged on the third connection piece 271 protrudes outward only from the surface of the third connection piece 271 on the side farther from the first connection piece 261. In the thickness direction of the second connecting piece 262, a portion of the first insulating member 33 arranged on the second connecting piece 262 protrudes outward from the surfaces on two sides of the second connecting piece 262, and a portion of the second insulating member 34 arranged on the fourth connecting piece 272 protrudes outward from the surfaces on two sides of the fourth connecting piece 272.

[0097] Furthermore, in the thickness direction of the overlapping portion of the first connection sheet 26 and the second connection sheet 27, that is, in the thickness direction of the first connection piece 261 and the third connection piece 271, the portion of the second insulating member 34 that corresponds to the third connection piece 271 is arranged on the side of the first insulating member 33 that is farther from the battery core 1. In this case, the third connection piece 271 is arranged on the side of the first connection piece 261 that is farther from the battery core 1. Naturally, the second insulating member 34 may instead be arranged on the side of the first insulating member 33 that is closer to the battery core 1. In this case, the third connection piece 271 is arranged on the side of the first connection piece 261 that faces the battery core 1.

[0098] In this embodiment of the present disclosure, the battery assembly 200 further includes a sampling circuit 4, the electrical connection member 2 is electrically connected to the sampling circuit 4, and the insulating member 3 is provided with an avoidance hole 30, which is configured to electrically connect the electrical connection member 2 to the sampling circuit 4.

[0099] Referring to Figures 9 and 10, the first connection piece 261 of the first connection sheet 26 overlaps with the third connection piece 271 of the second connection sheet 27, and in the thickness direction of the overlapping portion, the third connection piece 271 is positioned on the side of the first connection piece 261 farther from the battery core 1.

[0100] The sampling circuit 4 is electrically connected to the second connection sheet 27, and the second insulating member 34 is provided with an escape hole 30, and is also provided with at least one escape hole 30. The escape hole 30 is configured to electrically connect the second connection sheet 27 to the sampling circuit 4 to perform real-time monitoring of the voltage of the battery core 1.

[0101] The present disclosure further provides a vehicle 400 including the battery assembly 200 described above.

[0102] Although several specific embodiments of the present disclosure have been described in detail using examples, those skilled in the art will understand that the foregoing examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art will recognize that modifications can be made to the foregoing embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure depends on the appended claims. [Explanation of symbols]

[0103] 400 vehicles 200 Battery Assembly 100 Electrical Connection Assembly 1 Battery Core 10 grooves 11 Positive terminal 12 negative terminal 2 Electrical connection materials 20 fixing holes 21 Positive connection member 22 first connecting member 23 Second connecting member 24 Third connecting member 25 Negative connection member 26 First connection sheet 261 First connecting piece 2610 First Through Hole 262 Second connecting piece 27 Second connection sheet 271 Third connecting piece 2710 Second Through Hole 2711 Third Passage 272 Fourth connecting piece 28 Fasteners 3. Insulating materials 30 Avoidance Hole 31 First insulating piece 32 Second insulating piece 33 First insulating member 34 Second insulating member 35 Third insulating piece 4 Sampling circuit 5. Housing 6 Cover plate 7 Regular Tab 8 negative tabs

Claims

1. an electrical connection member (2) configured to connect a plurality of battery cores (1); an insulating member (3) disposed on the electrical connection member (2) and protruding outward from the side of the electrical connection member (2) farther from the battery core (1); An electrical connection assembly (100) comprising:

2. 2. The electrical connection assembly (100) of claim 1, wherein the thickness of the insulating member (3) is equal to or greater than the thickness of the electrical connection member (2) in the thickness direction of the electrical connection assembly.

3. 3. The electrical connection assembly (100) of claim 1 or 2, wherein the insulating member (3) comprises a first insulating piece (31) arranged along the edge of the electrical connection member (2) and a second insulating piece (32) protruding outward from a surface of the electrical connection member (2) that is farther from the battery core (1).

4. 4. The electrical connection assembly (100) of claim 3, wherein the second insulating piece (32) is provided with an avoidance hole (320), and the avoidance hole (320) is configured to electrically connect the electrical connection member (2) to a sampling circuit (4).

5. 5. The electrical connection assembly (100) of claim 3 or 4, wherein the insulating member (3) further comprises a third insulating piece (35), the third insulating piece (35) protruding outward from a side of the electrical connection member (2) closer to the battery core (1).

6. 6. The electrical connection assembly (100) of claim 1, wherein the electrical connection member (2) is provided with a fixing hole (20), and the fixing hole (20) is configured to connect to the battery core (1).

7. A battery assembly (200) comprising a plurality of battery cores (1), a housing (5), and the electrical connection assembly (100) according to any one of claims 1 to 6, wherein the electrical connection assembly (100) and the plurality of battery cores (1) are disposed within the housing (5); A battery assembly (200) in which the plurality of battery cores (1) are arranged in parallel, the plurality of battery cores (1) are connected in series or in parallel by the electrical connection assembly (100), and a portion of the insulating member (3) protruding outward from the side of the electrical connection member (2) remote from the battery cores (1) separates the electrical connection member (2) from the housing (5).

8. 8. The battery assembly (200) according to claim 7, wherein the plurality of battery cores (1) are stacked along a preset direction, terminals are provided on the battery cores (1), the battery cores (1) have two side surfaces arranged opposite each other along the preset direction, one of the two side surfaces is provided with a groove (10), and the terminal is arranged in the groove (10), or the terminal is arranged on the other of the two side surfaces.

9. 9. The battery assembly (200) according to claim 7 or 8, wherein the terminals of the battery core (1) comprise a positive terminal (11) and a negative terminal (12), the electrical connection member (2) comprises at least one first connection sheet (26) and at least one second connection sheet (27), and the positive terminal (11) of one battery core (1) of at least two adjacent battery cores (1) is connected to the negative terminal (12) of another battery core (1) of the at least two adjacent battery cores (1) by the first connection sheet (26) corresponding to the positive terminal (11) and the second connection sheet (27) corresponding to the negative terminal (12).

10. The first connecting sheet (26) comprises a first connecting piece (261) and a second connecting piece (262) that are arranged and connected in a curved manner; The second connecting sheet (27) comprises a third connecting piece (271) and a fourth connecting piece (272) that are arranged and connected in a curved manner; 10. The battery assembly (200) of claim 9, wherein the third connection piece (271) is arranged on one side of the first connection piece (261) in the thickness direction, the third connection piece (271) and the first connection piece (261) are attached and connected to each other, and the second connection piece (262) and the fourth connection piece (272) are arranged opposite each other.

11. The electrical connection assembly (100) further comprises a fastener (28), the first connection piece (261) being provided with a first through hole (2610), and the third connection piece (271) being provided with a second through hole (2710); 11. The battery assembly (200) of claim 10, wherein when the first connection piece (261) and the third connection piece (271) are attached to each other, the first through hole (2610) corresponds to and communicates with the second through hole (2710), and the fastener (28) is inserted into the first through hole (2610) and the second through hole (2710) to secure the first connection piece (261) and the third connection piece (271).

12. The first connecting piece (261) is provided with a fastener (28), and the third connecting piece (271) is provided with a third through hole (2711); 11. The battery assembly (200) of claim 10, wherein when the first connection piece (261) and the third connection piece (271) are attached to each other, the fastener (28) is inserted into the third through hole (2711) to secure the first connection piece (261) and the third connection piece (271).

13. 13. A battery assembly (200) according to any one of claims 10 to 12, wherein the insulating member (3) comprises a first insulating member (33) arranged on the peripheral side of the first connection sheet (26) and a second insulating member (34) arranged on the peripheral side of the second connection sheet (27), the first insulating member (33) protruding outward from a side of the first connection sheet (26) farther from the corresponding battery core (1), and the second insulating member (34) protruding outward from a side of the second connection sheet (27) farther from the corresponding battery core (1).

14. A vehicle comprising a battery assembly (200) according to any one of claims 7 to 13.

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