Electrical connection assembly and battery pack

Abstract

The embodiment of the invention provides an electrical connection assembly and a battery pack. The electrical connection assembly comprises an electrical connection piece which is connected with a to-be-collected piece in a welded mode; the flexible circuit board is located on one side of the to-be-collected piece; the flexible circuit board is provided with a first end connected with the detection device and a second end connected with the electric connecting piece; the battery pack comprises the electrical connection assembly. The flexible circuit board can adapt to various space limitations and application scenes through bending, the flexible circuit board can be directly connected with the system detection board in an inserted mode, the flexible circuit board is more convenient to use compared with acquisition wire harnesses needing switching connection, and the thickness size of the flexible circuit board is smaller than the overall diameter size of a plurality of acquisition wire harnesses. And the occupied space can be correspondingly reduced. The electric connecting piece can be bent or bent along with different use environments, so that the electric connecting piece can be better attached to the battery cell, and the connection stability is improved; and compared with the acquisition wire harness, the contact area of the electric connecting piece and the battery core is larger, welding connection is easier, and the connection stability is higher.

Description

Technical Field

[0001] The present application relates to the technical field of battery electrical connections, and in particular to an electrical connection assembly and a battery pack. Background Art

[0002] With the continuous advancement of green environmental protection, the use of electric vehicles has increased year by year. Power batteries are one of the core energy storage devices of electric vehicles. Because large-scale vehicles such as electric vehicles require a considerable power source, the requirements for battery power are becoming increasingly higher. Furthermore, higher requirements are placed on battery safety, reliability, processability, space utilization, and cost. Battery weight, volume, and compatibility with electric vehicles are all factors that need to be considered in battery configuration. Therefore, to meet the battery requirements of power source devices, battery packs have become a major component and key technology for power batteries.

[0003] The current battery pack is formed by stacking multiple battery cells. A collection harness is also provided on the battery pack, which is connected to at least one battery cell through the collection harness to collect information such as voltage and temperature of each battery cell.

[0004] However, the use of acquisition harnesses in battery packs has at least the following problems:

[0005] 1. The connection between the acquisition harness and the battery cell is cumbersome and unstable, and it also needs to be connected to the battery management system BMS through a transfer method, which has a high failure rate;

[0006] 2. The use of the collection harness requires a large space. Summary of the Invention

[0007] The embodiments of the present application provide an electrical connection assembly and a battery pack for simplifying the connection between a system detection board and battery cells, thereby reducing the occupied space and improving the stability of the connection.

[0008] In a first aspect, an embodiment of the present application provides an electrical connection assembly for connecting a piece to be collected and a detection device, characterized in that: the electrical connection assembly includes:

[0009] An electrical connector, connected by welding to the piece to be collected;

[0010] A flexible circuit board is located on one side of the object to be collected; the flexible circuit board has a first end connected to the detection device and a second end connected to the electrical connector.

[0011] In one possible implementation, the electrical connection assembly includes:

[0012] The tray is located on one side of the piece to be collected; the flexible circuit board is laid on the tray; the tray is provided with a mounting hole, and the electrical connector is fixed in the mounting hole.

[0013] In a possible embodiment, at least two support plates are provided on the inner sidewall of the mounting hole, and the at least two support plates include a first support plate and a second support plate, and the first support plate and the second support plate are positioned opposite to each other in a direction perpendicular to the axis of the mounting hole;

[0014] The first support plate and the second support plate are used to support the electrical connector placed in the mounting hole.

[0015] In a possible embodiment, an inner side wall of the mounting hole is provided with a receiving groove; a spring piece is provided in the mounting hole; the spring piece has a first end connected to the receiving groove and a second end extending out of the receiving groove;

[0016] The tray has a first side close to the object to be collected and a second side away from the object to be collected;

[0017] The second end of the elastic sheet is farther away from the first side of the tray than the first support plate and the second support plate.

[0018] In a possible embodiment, the second end of the elastic piece is provided with a first guide surface;

[0019] In a direction along the second side of the tray toward the first side of the tray, the first guide surface tends to gradually move away from the accommodating groove.

[0020] In a possible embodiment, a guide block is provided on an inner sidewall of the mounting hole, and the guide block is further away from the first side of the tray than the first support plate and the second support plate;

[0021] The guide block has a second guide surface, which faces away from the first side of the tray. In the direction along the second side of the tray toward the first side of the tray, the second guide surface tends to gradually move away from the inner side wall of the mounting hole.

[0022] In a possible embodiment, a protrusion is provided on the inner side wall of the mounting hole; and a notch is provided on the side of the electrical connector;

[0023] When the electrical connector is installed in the installation hole, the protrusion extends into the notch.

[0024] In a possible implementation, the plurality of support plates include a third support plate. In a direction perpendicular to an axis of the mounting hole, the third support plate is located between the first support plate and the second support plate.

[0025] In a possible implementation, the flexible circuit board is provided with a through hole; and the tray is provided with a column;

[0026] When the flexible circuit board is laid on the tray, the pillar passes through the through hole.

[0027] In a second aspect, an embodiment of the present application provides a battery pack, comprising the above-mentioned electrical connection assembly; the battery pack further comprises a housing, a system detection board, and a plurality of battery cells, wherein the battery cells serve as items to be collected, and the system detection board serves as a detection device;

[0028] The system detection board is installed on the housing; the plurality of battery cells are sequentially arranged in the housing; the flexible circuit board of the electrical connection assembly is arranged on the housing;

[0029] The first end of the flexible circuit board is plugged and connected to the system detection board; and the electrical connector is welded to the pole of the battery cell.

[0030] The electrical connection assembly and battery pack provided in the embodiments of the present application weld the flexible circuit board and the electrical connector, so that the flexible circuit board is directly plugged into the system detection board, and the electrical connector is welded to the pole of the battery cell, thereby realizing the system detection board to collect the working parameters of the battery cell. The flexible circuit board can adapt to various space limitations and application scenarios by bending, and the flexible circuit board can be directly plugged into the system detection board. Compared with the acquisition harness that requires a transfer connection, it is more convenient and quick to use, and the thickness of the flexible circuit board is smaller than the overall diameter of the multiple acquisition harnesses, thereby reducing the occupied space accordingly. The electrical connector can be bent or folded according to the different use environments, so that the electrical connector can be more fully fitted and connected to the battery cell, making the connection more stable; and the electrical connector has a larger contact area with the battery cell than the acquisition harness, is easier to weld and connect, and has a higher connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0032] Figure 1 A schematic diagram of a battery pack provided in some embodiments of the present application;

[0033] Figure 2 A schematic diagram of a battery pack provided in some embodiments of the present application with electrical connection components hidden;

[0034] Figure 3 A schematic diagram of the connection between the electrical connection assembly and the system detection board provided in some embodiments of the present application;

[0035] Figure 4A schematic diagram showing the electrical connection assembly provided in some embodiments of the present application connected to the system detection board with the tray hidden;

[0036] Figure 5 A first schematic diagram of a tray provided in some embodiments of the present application;

[0037] Figure 6 for Figure 5 A partial enlarged view of point A in the middle;

[0038] Figure 7 for Figure 5 A partial enlarged view of point B in the middle;

[0039] Figure 8 A second schematic diagram of a tray provided in some embodiments of this application;

[0040] Figure 9 for Figure 8 A partial enlarged view of point C in the middle;

[0041] Figure 10 for Figure 8 A partial enlarged view of point D in the middle;

[0042] Figure 11 Schematic diagram of the electrical connector provided in some embodiments of this application.

[0043] Reference numerals:

[0044] 10. Electrical connection assembly; 20. Housing; 30. Battery cell; 31. Pole; 40. System detection board; 100. Flexible circuit board; 110. First through hole; 200. Electrical connector; 210. Notch; 220. Second through hole; 300. Tray; 310. Mounting hole; 311. Support plate; 311a. First support plate; 311b. Second support plate; 311c. Third support plate; 312. Accommodating groove; 313. Spring piece; 313a. First guide surface; 314. Guide block; 314a. Second guide surface; 315. Protrusion; 320. Fixing groove; 321. Column; 322. Channel.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0047] Power batteries are one of the core energy storage devices of electric vehicles. Since large-scale vehicles such as electric vehicles require a considerable power source, the requirements for battery power are becoming increasingly higher. In addition, higher requirements are placed on battery safety, reliability, processability, space utilization and cost. The weight, volume and compatibility of the battery with the electric vehicle are all factors that need to be considered in battery settings.

[0048] Current power batteries usually include multiple battery packs, each of which is formed by stacking multiple battery cells. A collection harness is also provided on the battery pack, which connects at least one battery cell to the system detection board through the collection harness, that is, connects at least one battery cell to the battery management system BMS, so that the voltage, temperature and other information of each battery cell can be collected, monitored and analyzed.

[0049] However, the connection between the data acquisition harness and the battery cell is cumbersome and unstable, and requires an adapter to connect to the battery management system (BMS), which has a high failure rate. Furthermore, the data acquisition harness has a certain diameter, which means that multiple data acquisition harnesses take up a lot of space.

[0050] The present application provides an electrical connection assembly and battery pack, which welds a flexible circuit board to an electrical connector, so that the flexible circuit board is directly plugged into the system detection board, and the electrical connector is welded to the pole of the battery cell, thereby realizing the system detection board to collect the working parameters of the battery cell. The flexible circuit board can adapt to various space limitations and application scenarios by bending, and the flexible circuit board can be directly plugged into the system detection board. Compared with the acquisition harness that requires a transfer connection, it is more convenient and quick to use, and the thickness of the flexible circuit board is smaller than the overall diameter of multiple acquisition harnesses, thereby reducing the occupied space accordingly. The electrical connector can be bent or folded according to the different use environments, so that the electrical connector can be more fully fitted and connected to the battery cell, making the connection more stable; and the electrical connector has a larger contact area with the battery cell than the acquisition harness, is easier to weld and connect, and has a higher connection stability.

[0051] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0052] First, as Figure 3-Figure 4 As shown, an embodiment of the present application provides an electrical connection component 10, which is used to connect the part to be collected and the detection device, wherein the part to be collected is an electrical device. When the detection device is connected to the part to be collected through the electronic connection component of the embodiment of the present application, some working parameters of the part to be collected, such as voltage, current, temperature and other information, can be collected by the electrical connection component 10 and transmitted to the detection device, and then the detection device can monitor and analyze the working parameters of the part to be collected.

[0053] The electrical connection assembly 10 of the embodiment of the present application includes a flexible circuit board 100, which is fixedly arranged on one side of the object to be collected. The flexible circuit board 100 has a first end and a second end. The first end of the flexible circuit board 100 is electrically connected to the detection device, and the second end of the flexible circuit board 100 is electrically connected to the object to be collected, thereby achieving an electrical connection between the detection device and the object to be collected. In actual application, the detection device can be optionally configured to obtain corresponding operating parameters of the object to be collected, such as voltage or temperature information, through the flexible circuit board 100, which is not particularly limited. The electrical connection assembly 10 of the embodiment of the present application also includes an electrical connector 200. The electrical connector 200 is made of a metal material and has a sheet-like structure. That is, the electrical connector 200 is a metal sheet. Specifically, the electrical connector 200 is welded to the second end of the flexible circuit board 100. That is, the flexible circuit board 100 is connected to the object to be collected through the electrical connector 200. Specifically, the electrical connector 200 is attached to the object to be collected and is fixedly connected to the object to be collected by welding.

[0054] Furthermore, the number of first ends and the number of second ends of the flexible circuit board 100 can be set to multiple; when the number of first ends of the flexible circuit board 100 is multiple, the flexible circuit board 100 can be connected to multiple detection devices at the same time, so that different detection devices can respectively obtain different working parameters of the parts to be collected for monitoring and analysis; when the number of second ends of the flexible circuit board 100 is multiple, for example, the flexible circuit board 100 of the embodiment of the present application has multiple second ends that can be connected to the parts to be collected, the flexible circuit board 100 can be connected to multiple parts to be collected in the embodiment of the present application at the same time, so that a single detection device can simultaneously obtain the working parameters of multiple parts to be collected for detection and analysis; it can be understood that when the number of first ends and / or second ends of the flexible circuit board 100 is set to multiple, the work efficiency of detecting and analyzing the parts to be collected can be improved.

[0055] It should be noted that compared to using a wire harness to connect the detection device and the sample to be collected, the electrical connection assembly 10 of the embodiment of the present application can adapt to various space restrictions and application scenarios because the flexible circuit board 100 itself can be bent, folded, and curled at will, and has excellent flexibility and ductility. At the same time, the first end of the flexible circuit board 100 can be directly plugged into the detection device, which is more convenient and quick to use than the wiring harness that requires a transfer connection. At the same time, the thickness of a single flexible circuit board 100 is smaller than the overall diameter of multiple wiring harnesses, thereby reducing the occupied space accordingly. Furthermore, the flexible circuit board 100 of the embodiment of the present application is connected to the part to be collected through the electrical connector 200. Since the electrical connector 200 is a metal sheet, the electrical connector 200 itself also has a certain flexibility, so that the shape of the electrical connector 200 can be bent or folded according to different usage environments, so that the electrical connector 200 can be more comprehensively fitted and connected to the part to be collected, and the connection stability is higher; and the contact area of the electrical connector 200 is larger than that of the wiring harness and the part to be collected. The connection between the wiring harness and the part to be collected is a point and surface connection, while the connection between the electrical connector 200 and the part to be collected can be a surface and surface connection, which makes the connection more stable. Accordingly, the surface and surface connection is easier to operate than the point and surface connection, thereby simplifying the difficulty of connecting the part to be detected and the detection device.

[0056] Combine Figure 3 As shown, in some embodiments, the electrical connection assembly 10 includes a tray 300. In actual application, the tray 300 is fixedly set on one side of the part to be collected, and the flexible circuit board 100 is laid on the tray 300, so that the flexible circuit board 100 is also on the side of the part to be collected. Specifically, the flexible circuit board 100 is fixed to the tray 300 by bonding, thereby improving the stability of the flexible circuit board 100.

[0057] It can be understood that the embodiment of the present application can provide a carrier for the flexible circuit board 100 through the provision of the tray 300. Since the number of pieces to be collected in the embodiment of the present application is multiple, the tray 300 can be placed on the same side of the multiple pieces to be collected, so that the flexible circuit board 100 laid on the tray 300 can be on the same side of the multiple pieces to be collected, and since the flexible circuit board 100 is laid on the tray 300, the flexible circuit board 100 can be better unfolded, so that the multiple second ends of the flexible circuit board 100 can be respectively connected to different pieces to be collected.

[0058] Furthermore, when there are multiple pieces to be collected, the flexible circuit board 100 needs to be connected to multiple pieces to be collected at the same time. Therefore, the flexible circuit board 100 has a certain length so that the flexible circuit board 100 can extend to each piece to be collected. The tray 300 can support the flexible circuit board 100 with a certain length, and the flexible circuit board 100 is bonded and fixed to the tray 300, thereby improving the stability of the position and state of the flexible circuit board 100, and also making the multiple second ends of the flexible circuit board 100 more stable when connected to the pieces to be collected.

[0059] Further, combined with Figure 5-10 As shown, the tray 300 of the embodiment of the present application is further provided with a mounting hole 310, and the mounting hole 310 is set through the tray 300. In actual application, the electrical connector 200 is first connected to the second end of the flexible circuit board 100, and then the electrical connector 200 is fixedly installed in the mounting hole 310 of the tray 300. After the flexible circuit board 100 is adhesively fixed to the tray 300, the tray 300 is fixedly placed on one side of the part to be collected, and the electrical connector 200 is welded to the part to be collected.

[0060] It should be noted that when the tray 300 is fixedly placed on one side of the piece to be collected, the flexible circuit board 100 is on the side of the tray 300 away from the piece to be collected. Specifically, the tray 300 has a first side close to the piece to be collected and a second side away from the piece to be collected. The flexible circuit board 100 is on the second side of the tray 300, so that the tray 300 can isolate the piece to be collected and the flexible circuit board 100 to avoid safety problems. Since the mounting hole 310 can connect the two sides of the tray 300, the electrical connector 200 fixedly installed in the mounting hole 310 can be welded to the piece to be collected.

[0061] It is worth mentioning that when the flexible circuit board 100 and the electrical connector 200 are installed on the tray 300, when the electrical connector 200 is placed in the mounting hole 310, since the position of the electrical connector 200 is fixed and the electrical connector 200 is connected to the second end of the flexible circuit board 100, the electrical connector 200 can pull the flexible circuit board 100. Under the joint pulling action of multiple electrical connectors 200, the flexible circuit board 100 can be better unfolded on the tray 300, avoiding wrinkles when the flexible circuit board 100 is laid on the tray 300, thereby reducing the occupied space.

[0062] Furthermore, when the electrical connector 200 is fixedly installed in the mounting hole 310 of the tray 300, the mounting hole 310 can limit the electrical connector 200 to prevent the electrical connector 200 from shaking in the mounting hole 310, that is, the stability of the electrical connector 200 can be improved. When the electrical connector 200 is welded to the part to be collected, the stability of the welding between the electrical connector 200 and the part to be collected can be improved. It can be understood that in some application scenarios, the part to be collected and the tray 300 are both in motion, that is, the positions of the part to be collected and the tray 300 are in a state of synchronous movement. During the movement, the part to be collected and the tray 300 will also be jolted synchronously. In this state, since the electrical connector 200 is fixedly limited in the mounting hole 310, the positions of the electrical connector 200, the tray 300 and the part to be collected are relatively stationary, so that the electrical connector 200 can be stably connected to the part to be collected. Of course, in this state, even if the flexible circuit board 100 on the tray 300 shakes or falls off, the electrical connector 200 can remain relatively stationary with the part to be collected without being affected by the flexible circuit board 100, and can maintain the stability of the welding connection between the electrical connector 200 and the part to be collected, so that the electrical connector 200 can stably obtain the working parameters of the part to be collected and transmit them to the detection device through the flexible circuit board 100.

[0063] Combine Figure 5-10 As shown, in some embodiments, a support plate 311 is provided on the circumferential inner wall of the mounting hole 310, and the number of the support plates 311 is at least two, so that when the electrical connector 200 is placed in the mounting hole 310, at least two support plates 311 can support the electrical connector 200, preventing the electrical connector 200 from falling from the mounting hole 310 to the side of the part to be collected, so that the laying and bonding of the flexible circuit board 100 on the tray 300 can be facilitated, and the stability of the flexible circuit board 100 on the tray 300 can also be improved.

[0064] Furthermore, the support plate 311 provided in the mounting hole 310 includes at least a first support plate 311a and a second support plate 311b, and the first support plate 311a and the second support plate 311b are positioned relative to each other in the mounting hole 310. Specifically, in a direction perpendicular to the axis of the mounting hole 310, the first support plate 311a and the second support plate 311b are positioned relative to each other, so that when the electrical connector 200 is installed in the mounting hole 310, the first support plate 311a and the second support plate 311b can simultaneously support the opposite sides of the electrical connector 200. Furthermore, the first support plate 311a and the second support plate 311b are evenly arranged along the circumferential direction of the mounting hole 310, so that when the electrical connector 200 is installed in the mounting hole 310, the first support plate 311a and the second support plate 311b are also evenly arranged in the circumferential direction of the electrical connector 200, so that the first support plate 311a and the second support plate 311b can provide uniform supporting force to the electrical connector 200, thereby improving the stability of the first support plate 311a and the second support plate 311b supporting the electrical connector 200, improving the stability of the electrical connector 200 installed in the mounting hole 310, and thereby improving the stability of the welding connection between the electrical connector 200 and the collected part.

[0065] It can be understood that the more support plates 311 are provided in the mounting hole 310, the more stable the support for the electrical connector 200 is. For example, in the embodiment of the present application, four support plates 311 are provided in the mounting hole 310, and the four support plates 311 can respectively support the four corners of the electrical connector 200, thereby improving the stability of the electrical connector 200 in the mounting hole 310.

[0066] It is worth mentioning that when the electrical connector 200 is installed in the mounting hole 310 and welded to the part to be collected, the support plate 311 not only provides support for the electrical connector 200 but also acts as a limiter for the electrical connector 200. The support plate 311 will resist the electrical connector 200, and when the tray 300 and the part to be collected are in a state of synchronous movement, the electrical connector 200 can be prevented from shaking toward the part to be collected. In particular, because the four support plates 311 in the embodiment of the present application respectively support the four corners of the electrical connector 200, when the tray 300 and the part to be collected are in a state of synchronous movement, the four corners of the electrical connector 200 can be prevented from shaking toward the part to be collected, thereby improving the stability of the weld between the electrical connector 200 and the part to be collected.

[0067] Combine Figure 5-10As shown, in some embodiments, a receiving slot 312 is defined on the circumferential inner sidewall of the mounting hole 310, and a spring clip 313 is disposed within the mounting hole 310. Specifically, a first end of the spring clip 313 is fixedly connected to the inner sidewall of the receiving slot 312, while a second end of the spring clip 313 is located outside the receiving slot 312. Furthermore, when the electrical connector 200 within the mounting hole 310 is welded to the object to be collected, the second end of the spring clip 313 is further away from the object to be collected than the plurality of support plates 311. In other words, the second end of the spring clip 313 is further away from the first side of the tray 300 than the plurality of support plates 311. The electrical connector 200 is located between the second end of the spring clip 313 and the support plates 311, so that the second end of the spring clip 313 and the plurality of support plates 311 can clamp the electrical connector 200.

[0068] When the latch 313 is in the closed position, the latch 313 is in the closed position, and the latch 313 is in the open position, so that the latch 313 is in the open position, and the latch 313 is in the open position.

[0069] It can be understood that the more spring clips 313 are provided in the mounting hole 310, the more stable the limitation of the electrical connector 200 will be. For example, in the embodiment of the present application, two spring clips 313 are provided in the mounting hole 310, thereby improving the stability of the electrical connector 200 in the mounting hole 310.

[0070] It is worth mentioning that when the electrical connector 200 is installed in the mounting hole 310 and welded to the part to be collected, the second end of the spring 313 will resist the electrical connector 200. When the tray 300 and the part to be collected are in a state of synchronous movement, the electrical connector 200 can be prevented from shaking in a direction away from the part to be collected, thereby improving the stability of the welding point between the electrical connector 200 and the part to be collected.

[0071] In some embodiments, a first guide surface 313a is provided on the second end of the spring piece 313 extending out of the accommodating groove 312, wherein, when the electrical connector 200 in the mounting hole 310 is welded to the piece to be collected, the first guide surface 313a extends in a direction along the electrical connector 200 toward the piece to be collected, that is, the first guide surface 313a extends in a direction along the second side of the tray 300 toward the first side of the tray 300, and the first guide surface 313a tends to gradually move away from the inner wall of the mounting hole 310, that is, the first guide surface 313a tends to gradually move away from the accommodating groove 312.

[0072] It should be noted that, when the electrical connector 200 is installed in the mounting hole 310, the electrical connector 200 is first moved close to the mounting hole 310 until the electrical connector 200 contacts the second end of the spring piece 313. In this state, the second end of the spring piece 313 contacts the electrical connector 200 through the first guide surface 313a. Then, a force is applied to the electrical connector 200 so that the electrical connector 200 continues to move toward the support plate 311. During this process, the electrical connector 200 moves along the first guide surface 313a and squeezes the second end of the spring piece 313. Since the first guide surface 313a tends to gradually move away from the accommodating groove 312, when the electrical connector 200 moves along the first guide surface 313a, the second end of the spring piece 313 is pressed against the support plate 311. When the guide surface 313a squeezes the second end of the spring piece 313, the spring piece 313 will be deformed, causing the second end of the spring piece 313 to move toward the accommodating groove 312 until the second end of the spring piece 313 is completely moved into the accommodating groove 312. At this time, the second end of the spring piece 313 no longer blocks the electrical connector 200, allowing the electrical connector 200 to move toward the support plate 311 and be placed on the support plate 311. In this state, the electrical connector 200 no longer contacts the first guide surface 313a, that is, the electrical connector 200 no longer squeezes the second end of the spring piece 313, allowing the second end of the spring piece 313 to extend out of the accommodating groove 312 again and limit the electrical connector 200.

[0073] It can be understood that by providing the first guide surface 313a on the second end of the spring piece 313, the first guide surface 313a can provide a guiding function for the movement of the electrical connector 200 toward the support plate 311, so that the elastic performance of the spring piece 313 can be utilized to smoothly install the electrical connector 200 between the second end of the spring piece 313 and the support plate 311, so that the second end of the spring piece 313 and the support plate 311 can clamp the electrical connector 200 and at the same time limit the electrical connector 200, so as to improve the stability of the fixed installation of the electrical connector 200 in the mounting hole 310, thereby improving the stability of the welding connection between the electrical connector 200 and the part to be collected.

[0074] When the cam 314 is in the unlock state, the locking cam 313 is in the unlock state, and the lock 314 is unlocked, so that the cam 314 is unlocked and the lock 314 is unlocked.

[0075] In some embodiments, a guide block 314 is provided on the circumferential inner wall of the mounting hole 310. When the electrical connector 200 in the mounting hole 310 is welded to the piece to be collected, the guide block 314 is further away from the piece to be collected than the support plate 311, that is, the guide block 314 is further away from the first side of the tray 300 than the support plate 311, so that the guide block 314 can cooperate with the support plate 311 to clamp the electrical connector 200.

[0076] It is understandable that the support plate 311 can cooperate with the second end of the spring 313 and the guide block 314 to clamp the electrical connector 200 , thereby improving the stability of the electrical connector 200 in the mounting hole 310 .

[0077] Furthermore, a second guide surface 314a is provided on the guide block 314, and the second guide surface 314a faces away from the support plate 311, the first side of the tray 300 and the piece to be collected. Specifically, when the electrical connector 200 in the mounting hole 310 is welded to the piece to be collected, the second guide surface 314a tends to gradually move away from the side wall of the corresponding mounting hole 310 in the direction toward the piece to be collected, that is, in the direction along the second side of the tray 300 toward the first side of the tray 300.

[0078] It should be noted that, in the process of installing the electrical connector 200 into the mounting hole 310, the electrical connector 200 is first moved toward the direction close to the mounting hole 310 until the electrical connector 200 contacts the guide block 314. In this state, the guide block 314 contacts the electrical connector 200 through the second guide surface 314a. Thereafter, the force applied to the electrical connector 200 gradually increases. Since the second guide surface 314a tends to gradually move away from the side wall of the corresponding mounting hole 310, the electrical connector 200 moves along the second guide surface 314a toward the support plate 311. In the process, the electrical connector 200 will produce a certain deformation, and as the electrical connector 200 moves on the second guide surface 314a, the deformation degree of the electrical connector 200 will gradually increase until the electrical connector 200 contacts the support plate 311. At this time, the electrical connector 200 detaches from the second guide surface 314a, so that the guide block 314 no longer contacts the electrical connector 200, and then the electrical connector 200 is located between the guide block 314 and the support plate 311, so that the guide block 314 and the support plate 311 clamp the electrical connector 200 to improve the stability of the electrical connector 200.

[0079] In particular, when the electrical connector 200 is in a state of being clamped by the guide block 314 and the support plate 311, the guide block 314 can form a resistance limit for the electrical connector 200 on the side away from the part to be collected. When the tray 300 and the part to be collected are in a state of synchronous movement, the electrical connector 200 can be prevented from shaking in a direction away from the part to be collected, thereby improving the stability of the welding point between the electrical connector 200 and the part to be collected.

[0080] It is worth mentioning that in the process of the electrical connector 200 moving toward the support plate 311, the electrical connector 200 squeezes the guide block 314 through the second guide surface 314a. As the electrical connector 200 moves, the degree of deformation of the electrical connector 200 gradually increases, so that the force that the staff needs to apply to the electrical connector 200 will gradually increase, thereby being able to provide feedback to the staff that it will take a certain amount of time for the electrical connector 200 to be placed on the support plate 311; when the electrical connector 200 detaches from the second guide surface 314a and the electrical connector 200 is still squeezed against the guide block 314, as the electrical connector 200 moves, the force that the staff needs to apply to the electrical connector 200 remains unchanged, thereby being able to provide feedback to the staff that the electrical connector 200 is about to be placed on the support plate 311, to remind the staff that the electrical connector 200 is about to be installed in place.

[0081] Combine Figure 5 、 Figure 7-Figure 8 and Figure 10-11As shown, in some embodiments, a protrusion 315 is provided on the circumferential inner wall of the mounting hole 310, and the protrusion 315 protrudes from the circumferential side wall of the mounting hole 310; a notch 210 is provided on the circumferential side of the electrical connector 200; when the electrical connector 200 is installed in the mounting hole 310, the protrusion 315 can extend into the notch 210, so that the protrusion 315 and the notch 210 can cooperate to form a snap-fit structure, so that the electrical connector 200 can be snap-fitted in the mounting hole 310, so that the electrical connector 200 is limited in the circumferential direction, thereby improving the stability of the welding connection between the electrical connector 200 and the part to be collected.

[0082] It can be understood that when the electrical connector 200 is installed in the mounting hole 310, the electrical connector 200 can be first mounted on the protrusion 315 through the notch 210, so that the notch 210 and the protrusion 315 play a circumferential limiting role on the electrical connector 200, and then a force is applied to the electrical connector 200 so that the electrical connector 200 squeezes the guide block 314 and the second end of the spring piece 313. In this process, under the limiting action of the notch 210 and the protrusion 315, the stability of the electrical connector 200 can be improved, so that the electrical connector 200 is not easy to shake or detach during the squeezing process with the guide block 314 and the second end of the spring piece 313, thereby facilitating the installation of the electrical connector 200 in the mounting hole 310.

[0083] In particular, when the electrical connector 200 is installed in the mounting hole 310, the notch 210 and the protrusion 315 limit the electrical connector 200 in the circumferential direction. When the tray 300 and the piece to be collected are in a state of synchronous movement, the electrical connector 200 can be prevented from shaking in the circumferential direction, thereby improving the stability of the welding point between the electrical connector 200 and the piece to be collected.

[0084] Combine Figure 5-Figure 6 and Figure 8-Figure 9 As shown, in some embodiments, the support plate 311 provided in the mounting hole 310 includes a third support plate 311c, and in the axial direction perpendicular to the mounting hole 310, the third support plate 311c is located between the first support plate 311a and the second support plate 311b. Specifically, the opposite ends of the third support plate 311c are respectively connected to the circumferential inner wall of the mounting hole 310.

[0085] It is understood that when the electrical connector 200 is installed in the mounting hole 310, the electrical connector 200 is placed on the first support plate 311a and the second support plate 311b, while also being placed on the third support plate 311c. Since the first support plate 311a and the second support plate 311b respectively support the sides of the electrical connector 200, the third support plate 311c, which is disposed between the first support plate 311a and the second support plate 311b, can support the middle portion of the electrical connector 200, thereby providing better support for the electrical connector 200 and improving the stability of the electrical connector 200 after being installed in the mounting hole 310.

[0086] In particular, since the third support plate 311c can support the middle position of the electrical connector 200, when the tray 300 and the part to be collected are in a synchronous movement state, the middle position of the electrical connector 200 can be prevented from shaking in the direction toward the part to be collected, thereby improving the stability of the welding point between the electrical connector 200 and the part to be collected.

[0087] Combine Figure 4-Figure 6 As shown, in some embodiments, a first through hole 110 is provided on the flexible circuit board 100, and the first through hole 110 is set through the flexible circuit board 100; a column 321 is provided on the tray 300; when the flexible circuit board 100 is laid on the tray 300, the column 321 on the tray 300 can pass through the first through hole 110 on the flexible circuit board 100 to improve the stability of the flexible circuit board 100 laid on the tray 300.

[0088] In the embodiment of the present application, a plurality of first through holes 110 are provided on the flexible circuit board 100, and a plurality of columns 321 are provided on the tray 300. When the flexible circuit board 100 is laid on the tray 300, the first through holes 110 and the columns 321 cooperate with each other to enable the flexible circuit board 100 to always remain in an unfolded state. When the tray 300 and the object to be collected are in a state of synchronous movement, when the bonding between the flexible circuit board 100 and the tray 300 is unstable, displacement or wrinkling of the flexible circuit board 100 can be avoided.

[0089] Combine Figure 5-10 As shown, in some embodiments, when the tray 300 is fixedly set on one side of the piece to be collected, a fixing groove 320 is opened on the second side of the tray 300 away from the piece to be collected, wherein the flexible circuit board 100 is laid in the fixing groove 320, and the column 321 is also set in the fixing groove 320.

[0090] It can be understood that when the flexible circuit board 100 is laid in the fixing groove 320, the side wall of the fixing groove 320 can play a blocking and limiting role for the flexible circuit board 100. When the bonding between the flexible circuit board 100 and the tray 300 is unstable, the flexible circuit board 100 can be prevented from moving into the mounting hole 310, thereby improving safety. At the same time, since the side edge of the flexible circuit board 100 can be in the fixing groove 320, the fixing groove 320 can form a shielding protection for the side edge of the flexible circuit board 100, thereby reducing the probability of the side edge of the flexible circuit board 100 bonded to the tray 300 being corroded.

[0091] Furthermore, a channel 322 connected to the mounting hole 310 is opened on the inner wall of the fixing groove 320, and the portion of the electrical connector 200 in the mounting hole 310 can extend into the fixing groove 320 through the channel 322, so that the electrical connector 200 can be welded to the second end of the flexible circuit board 100.

[0092] It is worth mentioning that when the power supply connector 200 is partially extended into the fixing groove 320, the channel 322 also forms a limit for the electrical connector 200. Specifically, the channel 322 can limit the part where the electrical connector 200 is welded to the flexible circuit board 100. When the tray 300 and the part to be collected are in a state of synchronous movement, the stability of the connection between the electrical connector 200 and the flexible circuit board 100 can be ensured.

[0093] Second, combining Figure 1-Figure 3 As shown, a battery pack is provided in an embodiment of the present application, which includes the above-mentioned electrical connection assembly 10, and therefore can have the corresponding technical effects and advantages as described above.

[0094] The battery pack of the embodiment of the present application also includes a shell 20, in which a plurality of battery cells 30 are arranged in sequence, and a system detection board 40 is fixedly installed on the outer peripheral side wall of the shell 20; wherein, the battery cells 30 of the embodiment of the present application serve as the items to be collected, and the system detection board 40 serves as the detection device.

[0095] For example, in the process of assembling the battery pack of the embodiment of the present application, a plurality of battery cells 30 are first arranged in sequence in the shell 20, and the system detection board 40 is fixedly installed on the outer peripheral side wall of the shell 20; then the flexible circuit board 100 is welded to the electrical connector 200 and then installed on the tray 300; finally, the tray 300 is fixed to the shell 20, and the first end of the flexible circuit board 100 is plugged and connected to the system detection board 40, and the electrical connector 200 is welded to the pole 31 of the battery cell 30.

[0096] Further, combined with Figure 11As shown, in the embodiment of the present application, a second through hole 220 is provided on the electrical connector 200. When the tray 300 is installed on the shell 20, the position of the electrical connector 200 corresponds to the position of the pole 31 of the corresponding battery cell 30, and then the electrical connector 200 can be welded to the pole 31 of the battery cell 30 through the second through hole 220 on the electrical connector 200.

[0097] It can be understood that when the tray 300 is fixedly installed on the shell 20, the tray 300 is located on one side of the multiple battery cells 30, and the shell 20 can also be sealed, thereby limiting the multiple battery cells 30 in the shell 20, thereby improving the stability of the multiple battery cells 30 in the shell 20.

[0098] In particular, when the battery pack of the embodiment of the present application is used in a car, the entire battery pack will move with the movement of the car. When the car is bumpy, the battery pack will also be bumpy accordingly. Through the design of the electrical connection component 10 of the embodiment of the present application, even if the battery pack moves with the car or is bumpy, the electrical connection component 10 can maintain structural stability and be stably connected to the pole 31 of the battery cell 30 and the system detection board 40, thereby ensuring safe and stable driving of the car.

[0099] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. An electrical connection assembly for connecting a sample to be collected and a detection device, characterized in that: The electrical connection assembly (10) comprises, An electrical connector (200) connected by welding to the piece to be collected; A flexible circuit board (100) is located on one side of the object to be collected; the flexible circuit board (100) has a first end connected to the detection device and a second end connected to the electrical connector (200).

2. The electrical connection assembly according to claim 1, wherein: The electrical connection assembly (10) comprises, The tray (300) is located on one side of the object to be collected; the flexible circuit board (100) is laid on the tray (300); the tray (300) is provided with a mounting hole (310), and the electrical connector (200) is fixed in the mounting hole (310).

3. The electrical connection assembly according to claim 2, wherein: At least two support plates (311) are provided on the inner side wall of the mounting hole (310), the at least two support plates (311) comprising a first support plate (311a) and a second support plate (311b), and the first support plate (311a) and the second support plate (311b) are positioned opposite to each other in a direction perpendicular to the axis of the mounting hole (310); The first support plate (311a) and the second support plate (311b) are used to support the electrical connector (200) placed in the mounting hole (310).

4. The electrical connection assembly according to claim 3, wherein: An accommodating groove (312) is provided on the inner side wall of the mounting hole (310); a spring piece (313) is provided in the mounting hole (310); the spring piece (313) has a first end connected to the accommodating groove (312) and a second end extending out of the accommodating groove (312); The tray (300) has a first side close to the piece to be collected, and a second side away from the piece to be collected; The second end of the elastic sheet (313) is further away from the first side of the tray (300) than the first support plate (311a) and the second support plate (311b).

5. The electrical connection assembly according to claim 4, wherein: The second end of the elastic piece (313) is provided with a first guide surface (313a); In a direction along the second side of the tray (300) toward the first side of the tray (300), the first guide surface (313a) tends to gradually move away from the accommodating groove (312).

6. The electrical connection assembly according to claim 3, wherein: A guide block (314) is provided on the inner side wall of the mounting hole (310); the guide block (314) is further away from the first side of the tray (300) than the first support plate (311a) and the second support plate (311b); The guide block (314) has a second guide surface (314a), the second guide surface (314a) facing away from the first side of the tray (300); in a direction along the second side of the tray (300) toward the first side of the tray (300), the second guide surface (314a) tends to gradually move away from the inner wall of the mounting hole (310).

7. The electrical connection assembly according to claim 3, wherein: The inner side wall of the mounting hole (310) is provided with a protrusion (315); the side edge of the electrical connector (200) is provided with a notch (210); When the electrical connector (200) is installed in the installation hole (310), the protrusion (315) extends into the notch (210).

8. The electrical connection assembly according to claim 3, wherein: The plurality of support plates (311) include a third support plate (311c), and in an axial direction perpendicular to the mounting hole (310), the third support plate (311c) is located between the first support plate (311a) and the second support plate (311b).

9. The electrical connection assembly according to any one of claims 2 to 8, characterized in that: The flexible circuit board (100) is provided with a through hole; the tray (300) is provided with a column (321); When the flexible circuit board (100) is laid on the tray (300), the column (321) passes through the through hole.

10. A battery pack, characterized in that: The electrical connection assembly (10) comprises the electrical connection assembly (10) according to any one of claims 1 to 9; the battery pack further comprises a housing (20), a system detection board (40) and a plurality of battery cells (30), wherein the battery cells (30) serve as items to be collected, and the system detection board (40) serves as a detection device; The system detection board (40) is mounted on the housing (20); a plurality of the battery cells (30) are sequentially arranged in the housing (20); and the flexible circuit board (100) of the electrical connection assembly (10) is disposed on the housing (20); The first end of the flexible circuit board (100) is plug-connected to the system detection board (40); and the electrical connector (200) is welded to the pole (31) of the battery cell (30).

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