Cell testing connection device

Abstract

This application provides a battery cell testing connection device, relating to the field of battery cell testing technology. The battery cell testing connection device includes: a first bus and a second bus disposed opposite to each other, the first bus and the second bus being used to jointly clamp an electrical connection bar electrically connected to the battery cell under test, and both the first bus and the second bus being used to electrically connect to a test power line; a driving structure is disposed on at least one of the first bus and the second bus, and the driving end of the driving structure is connected to at least one of the first bus and the second bus, the driving structure being used to drive the first bus and the second bus to move closer to each other, so that the first bus and the second bus jointly clamp the electrical connection bar, eliminating the need to connect each electrical connection bar of each battery cell under test to a corresponding test power line, facilitating rapid connection and high connection efficiency.

Description

Technical Field

[0001] This application relates to the field of battery cell testing technology, and in particular to a battery cell testing connection device. Background Technology

[0002] With the rapid development of new energy vehicles, the market demands for batteries are also increasing. A battery contains multiple cells, and during the cell production and development process, it is necessary to test the electrical performance, safety, and reliability of the cells. In the cell testing process, testing equipment is typically electrically connected to the cell to monitor its internal resistance and voltage fluctuations in real time. This provides the raw data foundation for the cell's safety and reliability, ensuring that cell production meets design standards and application requirements.

[0003] In related technologies, a battery cell includes a cell terminal and a connecting bus. One end of the connecting bus is connected to the cell terminal, and the other end of the connecting bus is connected to the test power line of the test equipment by bolts. This allows the data inside the battery cell to be transmitted sequentially to the test equipment via the connecting bus and the test power line for battery cell testing.

[0004] However, each cell requires a bolt connection between the connector and the test power line during testing, which is inefficient and affects testing efficiency. Utility Model Content

[0005] This application provides a cell testing connection device to overcome the problem in the prior art where the connection bar and the test power line of the test equipment are connected by bolts, resulting in low bolt connection efficiency and affecting test efficiency.

[0006] This application provides a battery cell testing connection device, including: a first bus and a second bus disposed opposite to each other, the first bus and the second bus being used to jointly clamp an electrical connection bar electrically connected to a battery cell under test, and both the first bus and the second bus being used to electrically connect to a test power line; and a driving structure disposed on at least one of the first bus and the second bus, the driving end of the driving structure being connected to at least one of the first bus and the second bus, the driving structure being used to drive the first bus and the second bus to move closer to each other, so that the first bus and the second bus jointly clamp the electrical connection bar.

[0007] In one possible implementation, the drive structure includes a crank-connecting rod assembly and a transmission assembly. The transmission assembly includes a pressure rod and a press-fit member disposed on the pressure rod. The press-fit member on one of the first busbar and the second busbar is connected to the other of the first busbar and the second busbar. The pressure rod is connected to the crank-connecting rod assembly. The pressure rod is configured to move relative to the press-fit member under the drive of the crank-connecting rod assembly and drive one of the first busbar and the second busbar connected to the press-fit member toward the other of the first busbar and the second busbar.

[0008] In one possible implementation, the pressure rod and the pressing member are arranged parallel to each other; and / or, the transmission assembly further includes at least one connecting post through which the pressing member is connected to the pressure rod.

[0009] In one possible implementation, the crimping member includes a first crimping block and a second crimping block connected to the first crimping block. The first crimping block is connected to the pressure rod and is connected to the side of one of the first busbar and the second busbar. The second crimping block is connected to the end face of the corresponding first busbar and the second busbar.

[0010] In one possible implementation, the transmission assembly further includes a plurality of elastic elements, the first crimping block being connected to the first busbar and the second busbar via the elastic elements, the elastic elements being used to uniformly distribute the pressure exerted by the first busbar and the second busbar on the electrical connection busbar.

[0011] In one possible implementation, the transmission assembly further includes a plurality of guide members connected to the first busbar or the second busbar, and the elastic member is sleeved outside the guide members, the guide members being used to guide the compression deformation direction of the elastic member.

[0012] In one possible implementation, the crank-connecting rod assembly includes a base, a crank, a connecting rod, and a rocker arm. One end of the crank is hinged to one end of the base, and the other end of the crank is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to the other end of the base via the rocker arm, and the rocker arm is connected to the pressure rod.

[0013] In one possible implementation, the first busbar has a pressure-bearing cavity, the pressure rod and the crimping member are disposed in the pressure-bearing cavity, and the crimping member is connected to the first busbar; the second busbar is flat, and the crank connecting rod assembly is disposed on the second busbar.

[0014] In one possible implementation, the first busbar is provided with a first connection hole, and the first busbar is electrically connected to the test power line through the first connection hole; the second busbar is provided with a second connection hole, and the second busbar is electrically connected to the test power line through the second connection hole.

[0015] In one possible implementation, an insulating base is also included, with one of the first busbar and the second busbar disposed on the insulating base.

[0016] The battery cell testing connection device provided in this application embodiment has a first bus and a second bus arranged opposite to each other. A driving structure applies pressure to at least one of the first bus and the second bus, causing the first bus and the second bus connected to the driving end of the driving structure to move closer to each other, thereby clamping the electrical connection bus together. Both the first bus and the second bus are electrically connected to the test power line, so that the current signal of the test power line can be transmitted to the electrical connection bus in sequence through the first bus and the second bus, and then transmitted to the battery cell under test. It is not necessary to connect the electrical connection bus of each battery cell under test to the test power line, which facilitates quick connection and has high connection efficiency. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 This is a schematic diagram of the structure of the cell testing connection device provided in this application;

[0019] Figure 2 for Figure 1 Side view of the cell testing connection device provided in the image;

[0020] Figure 3 for Figure 1 A schematic diagram of the elastic component of the battery cell testing connection device provided in the document.

[0021] Explanation of possession markings:

[0022] 100-Electrical connector;

[0023] 210 - First busbar; 211 - First connecting hole; 212 - Pressure-bearing cavity; 213 - First connecting section; 214 - Second connecting section; 215 - Third connecting section; 220 - Second busbar; 221 - Second connecting hole;

[0024] 300-Drive structure; 310-Crank and connecting rod assembly; 311-Base; 312-Crank; 313-Connecting rod; 314-Rock arm; 315-Crimping handle; 320-Transmission assembly; 321-Pressure rod; 322-Crimping element; 3221-First crimping block; 3222-Second crimping block; 323-Connecting post; 324-Elastic element; 325-Guide element;

[0025] 400 - Insulating base.

[0026] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: the components indicated by spline curves without arrows can be solid components, that is, components with solid structures; the components indicated by spline curves with arrows can be virtual components, that is, components without solid structures; in some cases, the components indicated by spline curves with arrows can also be assemblies with solid structures or virtual structures.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] The terms "first," "second," "third," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0030] Secondly, it should be noted that in the description of this application, the terms "inner", "outer", "first direction", "second direction", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0031] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] As shown in the background art, in related technologies, the test equipment and the battery cell are connected by bolts. The battery cell includes a battery cell terminal and a connecting bus. One end of the connecting bus is connected to the battery cell terminal, and the other end of the connecting bus is connected to the test power line of the test equipment by bolts. This allows the data inside the battery cell to be transmitted to the test equipment sequentially through the connecting bus and the test power line for battery cell testing.

[0033] However, each cell requires a bolt connection between the connector and the test power line during testing, which is inefficient and affects testing efficiency.

[0034] To address the aforementioned technical problems, this application provides a battery cell testing connection device, comprising: a first bus and a second bus disposed opposite to each other, the first bus and the second bus being used to jointly clamp an electrical connection bar electrically connected to the battery cell under test, and both the first bus and the second bus being used to electrically connect to a test power line; and a driving structure disposed on at least one of the first bus and the second bus, the driving end of the driving structure being connected to at least one of the first bus and the second bus, the driving structure being used to drive the first bus and the second bus to move closer together, so that the first bus and the second bus jointly clamp the electrical connection bar. By applying pressure to at least one of the first bus and the second bus through the driving structure, the first bus and the second bus connected to the driving end of the driving structure are brought closer together, thereby jointly clamping the electrical connection bar to form an electrical connection. This eliminates the need to connect the electrical connection bar of each battery cell under test to a corresponding test power line, facilitating rapid connection and achieving high connection efficiency.

[0035] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0036] This application provides a cell testing connection device, combined with Figure 1 and Figure 2As shown, it includes: a first bus 210 and a second bus 220 arranged opposite to each other. The first bus 210 and the second bus 220 are used to jointly clamp the electrical connection bus 100 which is electrically connected to the battery cell under test, and both the first bus 210 and the second bus 220 are used to be electrically connected to the test power line.

[0037] A drive structure 300 is disposed on at least one of the first busbar 210 and the second busbar 220, and the drive end of the drive structure 300 is connected to at least one of the first busbar 210 and the second busbar 220. The drive structure 300 is used to drive the first busbar 210 and the second busbar 220 to move closer to each other so that the first busbar 210 and the second busbar 220 jointly clamp the electrical connection bar 100.

[0038] Understandably, during cell testing, the two ends of the electrical connector 100 need to be connected to the testing equipment and the cell under test, respectively, to transmit current signals and perform the test. The power output line of the electrical connector 100 and the testing equipment is typically connected by bolts, but both connecting and disconnecting the bolts require multiple turns, resulting in low connection efficiency and impacting testing efficiency.

[0039] Reference Figure 1 and Figure 2 As shown, the first busbar 210 and the second busbar 220 can be arranged opposite each other. The driving structure 300 applies pressure to at least one of the first busbar 210 and the second busbar 220, causing the first busbar 210 and the second busbar 220 connected to the driving end of the driving structure 300 to move closer to each other, thereby clamping the electrical connection bar 100 together. Both the first busbar 210 and the second busbar 220 are electrically connected to the test power line, so that the current signal of the test power line can be transmitted to the electrical connection bar 100 through the first busbar 210 and the second busbar 220 in sequence, and then transmitted to the battery cell under test. It is not necessary to connect the electrical connection bar of each battery cell under test to the test power line accordingly, which facilitates quick connection and has high connection efficiency.

[0040] Furthermore, it should be noted that the drive structure 300 can also drive the first busbar 210 and the second busbar 220 away from each other, or after the drive structure 300 releases pressure, the first busbar 210 and the second busbar 220 will separate from the electrical connection busbar 100. Therefore, when the battery cell testing is completed and it is necessary to remove the testing equipment and the battery cell under test or replace the battery cell for testing, the drive structure 300 can be used to drive the first busbar 210 and the second busbar 220 away from each other, thereby allowing the electrical connection busbar 100 to be removed. This facilitates quick connection and disassembly, is highly efficient, and is simple and convenient to operate.

[0041] In one possible implementation, combining Figure 1 and Figure 2As shown, the drive structure 300 includes a crank-connecting rod assembly 310 and a transmission assembly 320. The transmission assembly 320 includes a pressure rod 321 and a pressing member 322 disposed on the pressure rod 321. The pressing member 322 on one of the first busbar 210 and the second busbar 220 is connected to the other of the first busbar 210 and the second busbar 220. The pressure rod 321 is connected to the crank-connecting rod assembly 310. The pressure rod 321 is configured to move relative to the pressing member 322 under the drive of the crank-connecting rod assembly 310 and drive one of the first busbar 210 and the second busbar 220 connected to the pressing member 322 to move closer to the other of the first busbar 210 and the second busbar 220.

[0042] Specifically, in combination Figure 1 and Figure 2 As shown, the pressure rod 321 is connected to the crank-connecting rod assembly 310, and a pressing member 322 is provided on the pressure rod 321. The pressing member 322 is connected to one of the first busbar 210 and the second busbar 220. Under the drive of the crank-connecting rod assembly 310, the pressure rod 321 can be driven to move relative to the pressing member 322, thereby driving the pressing member 322 to move. This causes one of the first busbar 210 and the second busbar 220 connected to the pressing member 322 to move closer to the other of the first busbar 210 and the second busbar 220, so that the first busbar 210 and the second busbar 220 can jointly clamp the electrical connection busbar 100 to form an electrical connection for the flow of current signals.

[0043] It should be noted that the installation position of crimping component 322 and the connection end are located on two different busbars, i.e., as shown below. Figure 2 As shown, the crimping member 322, the pressure rod 321 connected to the crimping member 322, and the crank connecting rod assembly 310 are all disposed on the second busbar 220. The connecting end of the crimping member 322 can be connected to the first busbar 210 so that the first busbar 210 and the second busbar 220 can be driven to move closer to each other to clamp the electrical connection busbar 100 under pressure.

[0044] Furthermore, such as Figure 2 As shown, the pressure bar 321 and the pressing member 322 are arranged parallel to each other;

[0045] And / or, the transmission assembly 320 further includes at least one connecting post 323, through which the crimping member 322 is connected to the pressure rod 321.

[0046] Specifically, such as Figure 2As shown, the crimping member 322 has a crimping surface, which can be connected to one of the first busbar 210 and the second busbar 220. The pressure rod 321 can be arranged parallel to the crimping member 322 so that when the pressure rod 321 is pressed down under the drive of the crank connecting rod assembly 310, a vertical force is applied and the crimping member 322 can be pressed down synchronously so that the first busbar 210 and the second busbar 220 connected to the crimping member 322 can be pressed down and connected to the electrical connection busbar 100 for conductivity.

[0047] In addition, it should be noted that, in combination Figure 1 and Figure 2 As shown, the crimping member 322 and the pressure rod 321 can be connected by a connecting post 323 so that under the drive of the crank connecting rod assembly 310, the pressure rod 321 can transmit pressure to the crimping member 322, thereby driving the first busbar 210 and the second busbar 220 to move closer to each other and realize the energization connection with the electrical connection busbar 100.

[0048] Furthermore, such as Figure 2 As shown, the crimping member 322 includes a first crimping block 3221 and a second crimping block 3222 connected to the first crimping block 3221. The first crimping block 3221 is connected to the pressure rod 321 and is connected to the side of one of the first busbar 210 and the second busbar 220. The second crimping block 3222 is connected to the end face of the corresponding first busbar 210 and the second busbar 220.

[0049] Specifically, refer to Figure 2 As shown, the first crimping block 3221 has a crimping surface, which can be connected to the side of one of the first busbar 210 and the second busbar 220 to drive the first busbar 210 and the second busbar 220 to move downward and connect with the electrical connector 100. The second crimping block 3222 is perpendicularly connected to the first crimping block 3221, and the end face of the corresponding first busbar 210 or second busbar 220 is connected to the second crimping block 3222. The second crimping block 3222 is used to limit the corresponding first busbar 210 or second busbar 220 to prevent the first busbar 210 or second busbar 220 from shifting or misaligning during the contact with the electrical connector 100, which would cause wear to the electrical connector 100.

[0050] In one possible implementation, the transmission assembly 320 further includes a plurality of elastic elements 324. The first pressing block 3221 is connected to the first busbar 210 or the second busbar 220 through the elastic elements 324. The elastic elements 324 are used to evenly distribute the pressure of the first busbar 210 or the second busbar 220 on the electrical connection busbar 100.

[0051] It is understandable that the first busbar 210 or the second busbar 220 is connected to the first crimping block 3221 by multiple elastic elements 324 on the contact side. The elastic elements 324 are spaced apart, and the pressure applied by the pressure rod 321 to the first crimping block 3221 is evenly distributed by the elastic elements 324 so that the electrical connector 100 is evenly compressed, avoiding stress concentration, which would cause the contact internal resistance of the electrical connector 100 to be too large during the conduction process between the electrical connector 100 and the first busbar 210 or the second busbar 220, thus affecting the test results.

[0052] In one possible implementation, such as Figure 3 As shown, the transmission assembly 320 also includes a plurality of guide members 325, which are connected to the first busbar 210 or the second busbar 220. The elastic member 324 is sleeved on the guide member 325, and the guide member 325 is used to guide the compression deformation direction of the elastic member 324.

[0053] Specifically, in combination Figure 3 As shown, the guide 325 and the elastic element 324 are correspondingly arranged, and the elastic element 324 is sleeved on the guide 325. The guide 325 can be a screw or a guide rod, and there is no specific limitation, as long as it can guide the compression deformation direction of the elastic element 324 when the first pressing block 3221 presses the elastic element 324 to deform, and prevent the elastic element 324 from shaking in all directions during the compression process.

[0054] In one possible implementation, reference is made to Figure 1 and Figure 2 As shown, the crank-connecting rod assembly 310 includes a base 311, a crank 312, a connecting rod 313, and a rocker arm 314. One end of the crank 312 is hinged to one end of the base 311, and the other end of the crank 312 is hinged to one end of the connecting rod 313. The other end of the connecting rod 313 is hinged to the other end of the base 311 via the rocker arm 314. The rocker arm 314 is connected to the pressure rod 321.

[0055] Specifically, the base 311 can be installed on the first bus 210 or the second bus 220, such as Figure 1 and Figure 2 As shown, the base 311 can be set on the second busbar 220, the crank 312, the connecting rod 313 and the rocker arm 314 are hinged in sequence, the rocker arm 314 is fixedly connected to the pressure rod 321, the pressing member 322 is set on the pressure rod 321 and the pressing member 322 is connected to the first busbar 210.

[0056] like Figure 2As shown, a crimping handle 315 is connected to the connecting rod 313. The operator can apply force by gripping the crimping handle 315, thereby driving the connecting rod 313 to move. In use, first fix the base 311 in position, and then grip the crimping handle 315 to apply force towards the pressing rod 321, thereby driving the connecting rod 313 to rotate the rocker arm 314, causing the pressing rod 321, which is fixedly connected to the rocker arm 314, to move downward. The crimping member 322 presses down on the first busbar 210, causing the first busbar 210 to move closer to the second busbar 220, so that the first busbar 210 and the second busbar 220 can jointly clamp the electrical connection busbar 100.

[0057] It should be noted that when the crank 312 and connecting rod 313 are in a collinear position, and external force is stopped, the crank-connecting rod assembly 310 is in a self-locking state, which can resist the reaction force generated by the electrical connector 100 under the clamping of the first busbar 210 and the second busbar 220. When it is necessary to remove the electrical connector 100, the crimping handle 315 can be manually held and turned away from the pressure rod 321 to release the self-locking state. This drives the connecting rod 313 to rotate the rocker arm 314 in the opposite direction, thereby causing the pressure rod 321, which is fixedly connected to the rocker arm 314, to move upward. The crimping part 322 moves upward, causing the first busbar 210 and the second busbar 220 to move away from each other, so that the electrical connector 100 can be removed, realizing disassembly and assembly. The operation is simple and quick.

[0058] Of course, it should be noted that the base 311 can also be set on the first busbar 210, and the crimping member 322 can be connected to the second busbar 220. There are no specific restrictions, as long as the first busbar 210 and the second busbar 220 can be driven to move closer to each other to jointly clamp the electrical connection busbar 100.

[0059] In one possible implementation, such as Figure 2 As shown, the first busbar 210 has a pressure chamber 212, a pressure rod 321 and a crimping member 322 are disposed in the pressure chamber 212, and the crimping member 322 is connected to the first busbar 210.

[0060] The second busbar 220 is flat, and the crank connecting rod assembly 310 is disposed on the second busbar 220.

[0061] Specifically, such as Figure 1As shown, the first busbar 210 includes a first connecting section 213, a second connecting section 214, and a third connecting section 215. The two ends of the second connecting section 214 are connected to the first connecting section 213 and the third connecting section 215, respectively, and the first connecting section 213 and the third connecting section 215 are located on the same side of the second connecting section 214. The first connecting section 213, the second connecting section 214, and the third connecting section 215 enclose a pressure-bearing cavity 212. The second busbar 220 is flat, and the crank-connecting rod assembly 310 is mounted on the second busbar 220. Similarly, the first busbar 210 is also disposed on the second busbar 220. The pressure rod 321 connected to the rocker arm 314 in the crank-connecting rod assembly 310 and the crimping member 322 connected to the pressure rod 321 are both disposed in the pressure-bearing cavity 212. The crimping member 322 is connected to the first connecting section 213 of the first busbar 210. Under the action of the crank-connecting rod assembly 310, the crimping member 322 can be driven to push the first busbar 210 downward, thereby bringing the first connecting section 213 and the second busbar 220 closer to each other to jointly clamp the electrical connection busbar 100.

[0062] It should be noted that the length of the first busbar 210 and the second busbar 220 both extend along the extension direction of the electrical connection busbar 100, reducing the space occupied by the cell testing connection device and avoiding interference with surrounding device components.

[0063] In one possible implementation, such as Figure 1 As shown, the first busbar 210 is provided with a first connection hole 211, and the first busbar 210 is electrically connected to the test power line through the first connection hole 211.

[0064] The second busbar 220 is provided with a second connection hole 221, and the second busbar 220 is electrically connected to the test power line through the second connection hole 221.

[0065] It is understandable that the test power line of the testing device needs to be connected to the cell under test to transmit current signals for testing. A first connection hole 211 can be opened on the first busbar 210 of the cell testing connection device of this application. As shown in the title, the first connection hole 211 can be located on the third connection section 215. A second connection hole 221 is opened on the second busbar 220, so that the test power line is connected to the first busbar 210 and the second busbar 220 respectively through the first connection hole 211 and the second connection hole 221. When replacing the cell under test, it is only necessary to drive the first busbar 210 and the second busbar 220 away from each other and remove the electrical connection busbar 100, without removing the test power line, saving time and increasing testing efficiency.

[0066] In one possible implementation, reference is made to Figure 1 and Figure 2As shown, it also includes an insulating base 400, and one of the first busbar 210 and the second busbar 220 is disposed on the insulating base 400.

[0067] Specifically, the crimping member 322 is connected to one of the first busbar 210 and the second busbar 220. Under the action of the crank-connecting rod assembly 310, pressure is applied to one of the first busbar 210 and the second busbar 220 through the crimping member 322. The other of the first busbar 210 and the second busbar 220 then acts as the pressure-bearing party, absorbing the pressure and allowing the first busbar 210 and the second busbar 220 to approach each other. Therefore, the first busbar 210 or the second busbar 220 that is not connected to the crimping member 322 will be connected to the insulating base 400. The insulating base 400 is used to support the corresponding first busbar 210 or second busbar 220, and the insulating base 400 is insulating, effectively isolating the first busbar 210 or the second busbar 220 from contact with the ground, preventing accidents caused by current flow.

[0068] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An electrical cell test connection device, characterized by, include: The first bus (210) and the second bus (220) are arranged opposite to each other. The first bus (210) and the second bus (220) are used to jointly clamp the electrical connection bus (100) that is electrically connected to the battery cell under test. The first bus (210) and the second bus (220) are both used to be electrically connected to the test power line. A drive structure (300) is disposed on at least one of the first busbar (210) and the second busbar (220), and the drive end of the drive structure (300) is connected to at least one of the first busbar (210) and the second busbar (220). The drive structure (300) is used to drive the first busbar (210) and the second busbar (220) to move closer to each other so that the first busbar (210) and the second busbar (220) together clamp the electrical connection bar (100).

2. The cell test connection apparatus according to claim 1, characterized by The drive structure (300) includes a crank-connecting rod assembly (310) and a transmission assembly (320). The transmission assembly (320) includes a pressure rod (321) and a crimping member (322) disposed on the pressure rod (321). The crimping member (322) on one of the first busbar (210) and the second busbar (220) is connected to the other of the first busbar (210) and the second busbar (220). The pressure rod (321) is connected to the crank-connecting rod assembly (310). The pressure bar (321) is configured to move relative to the pressure member (322) and drive one of the first busbar (210) and the second busbar (220) connected to the pressure member (322) toward the other of the first busbar (210) and the second busbar (220) under the action of the crank connecting rod assembly (310).

3. The cell test connection apparatus of claim 2, wherein The pressure bar (321) and the pressing member (322) are arranged parallel to each other; And / or, the transmission assembly (320) further includes at least one connecting post (323), through which the crimping member (322) is connected to the pressure rod (321).

4. The cell test connection apparatus of claim 2, wherein The crimping member (322) includes a first crimping block (3221) and a second crimping block (3222) connected to the first crimping block (3221). The first crimping block (3221) is connected to the pressure rod (321), and the first crimping block (3221) is connected to the side of one of the first busbar (210) and the second busbar (220). The second crimping block (3222) is connected to the end face of the corresponding first busbar (210) and the second busbar (220).

5. The cell test connection apparatus of claim 4, wherein, The transmission assembly (320) further includes a plurality of elastic elements (324), the first crimping block (3221) is connected to the first busbar (210) or the second busbar (220) through the elastic elements (324), and the elastic elements (324) are used to uniformly distribute the pressure of the first busbar (210) or the second busbar (220) on the electrical connection busbar (100).

6. The cell test connection apparatus of claim 5, wherein, The transmission assembly (320) further includes a plurality of guide members (325), which are connected to the first busbar (210) or the second busbar (220). The elastic member (324) is sleeved on the guide member (325), and the guide member (325) is used to guide the compression deformation direction of the elastic member (324).

7. The cell test connection apparatus of claim 2, wherein The crank-connecting rod assembly (310) includes a base (311), a crank (312), a connecting rod (313), and a rocker arm (314). One end of the crank (312) is hinged to one end of the base (311), and the other end of the crank (312) is hinged to one end of the connecting rod (313). The other end of the connecting rod (313) is hinged to the other end of the base (311) via the rocker arm (314). The rocker arm (314) is connected to the pressure rod (321).

8. The cell testing connection device according to any one of claims 2-7, characterized in that, The first busbar (210) has a pressure-bearing cavity (212), the pressure rod (321) and the crimping member (322) are disposed in the pressure-bearing cavity (212), and the crimping member (322) is connected to the first busbar (210); The second busbar (220) is flat, and the crank connecting rod assembly (310) is disposed on the second busbar (220).

9. The cell test connection apparatus according to any one of claims 1 to 7, wherein The first busbar (210) is provided with a first connection hole (211), and the first busbar (210) is electrically connected to the test power line through the first connection hole (211); The second busbar (220) is provided with a second connection hole (221), and the second busbar (220) is electrically connected to the test power line through the second connection hole (221).

10. The battery cell test connection apparatus of any one of claims 1-7, wherein, It also includes an insulating base (400), on which one of the first busbar (210) and the second busbar (220) is disposed.

Images