CN218675246U

CN218675246U - OCV test equipment

Info

Publication number: CN218675246U
Application number: CN202222174538.7U
Authority: CN
Inventors: 苏文军; 穆凯; 尹帮富
Original assignee: Zhongchuangxin Aviation Technology Wuhan Co ltd; China Lithium Battery Technology Co Ltd
Current assignee: Zhongchuangxin Aviation Technology Wuhan Co ltd; China Lithium Battery Technology Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-03-21
Anticipated expiration: 2032-08-17

Abstract

The utility model relates to a battery technology field discloses an OCV test equipment for the test pattern of the present adoption that exists can influence the problem of measuring accuracy among the solution prior art. This OCV test equipment includes testboard, OCV tester, a plurality of test assembly, a plurality of drive arrangement and controlling means, wherein: the test bench is used for placing batteries; the testing assemblies are respectively connected with the OCV tester through testing wiring harnesses, each testing assembly corresponds to a different battery, and when the testing assemblies are contacted with the batteries, the batteries are conducted with the OCV tester to form a testing loop; when the test assembly and the battery are separated, the battery is disconnected from the OCV tester; the driving devices correspond to the testing components one by one and are connected with the testing components, and the driving devices are used for driving the testing components to be close to the batteries or far away from the batteries. The control device is connected with the driving device and used for controlling the driving device to drive the testing assembly to move, so that the batteries are sequentially conducted with the OCV tester.

Description

OCV test equipment

Technical Field

The utility model relates to a battery technology field especially relates to an OCV test equipment.

Background

In the OCV testing stage, due to the beat requirement, it is required to ensure that the production line requirement of 10-12ppm can be met by measuring at least two square shell battery cores once, and at present, the measurement is mostly carried out in a mode of switching two OCV testers or one OCV tester and a relay.

The requirement on interference resistance of the test precision of the OCV tester is high, the two OCV testers have signal interference between the testers, the test precision is greatly influenced, and the OCV testers are expensive; according to the switching mode of the OCV tester and the relay, the relay has a coil, so that adverse effects can be caused on the testing precision, and the testing precision can be influenced by the two modes in the application process.

SUMMERY OF THE UTILITY MODEL

The utility model provides an OCV test equipment for the test pattern of the present adoption that exists can influence the problem of measuring accuracy among the solution prior art.

The embodiment of the utility model provides an OCV test equipment, this OCV test equipment includes testboard, OCV tester, a plurality of test assembly, a plurality of drive arrangement and controlling means;

the test bench is used for placing batteries;

the test assemblies are respectively connected with the OCV tester through test wiring harnesses, each test assembly corresponds to a different battery, when the test assemblies are in contact with the batteries, the batteries are conducted with the OCV tester to form a test loop, and when the test assemblies are separated from the batteries, the batteries are disconnected with the OCV tester;

the driving devices correspond to the test assemblies one by one and are connected with the test assemblies, and the driving devices are used for driving the test assemblies to be close to the batteries or far away from the batteries;

the control device is connected with the driving device and used for controlling the driving device to drive the test assembly to move, so that the batteries are sequentially conducted with the OCV tester.

The utility model discloses beneficial effect as follows:

in this OCV test equipment, every test component is connected with the OCV tester through the test pencil respectively, test component can be close to the battery under drive arrangement's drive, until contacting with the battery, at this moment, this battery switches on with the OCV tester, the OCV tester can test this battery, after the test is accomplished, test component can be with battery separation under drive arrangement's drive, make this battery and OCV tester disconnection, under control device's control, the OCV tester can switch on with a plurality of batteries in proper order, thereby accomplish the test, and in the testing process, there is not signal interference, the measuring accuracy is higher.

Drawings

Fig. 1 is a schematic structural diagram of an OCV testing apparatus according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of the OCV testing apparatus shown in FIG. 1;

FIG. 3 is a simplified block diagram of the drive assembly, the connector socket, the test assembly, and other associated components of the OCV test apparatus shown in FIG. 1 in the YZ plane;

fig. 4 is a simplified structural view in the XZ plane of the connection socket, the test assembly, and associated components therebetween in the OCV test apparatus shown in fig. 1.

Reference numerals are as follows:

10-a test bench; 20-OCV tester; 30-a test assembly; 301-a probe; 302-a probe mount; 40-a drive device; 50-a support frame; 501-a first supporting part; 502-a second support; 503-beam; 60-a fixed seat; 70-a first adjustment lever; 701-a first rotating handle; 80-a first linear guide; 801-a first slider; 90-a connecting seat; 100-a second adjustment lever; 101-a second rotating handle; 110-a second linear guide; 111-a second slider; 120-battery.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the OCV test apparatus includes a test bench 10, an OCV tester 20, a plurality of test modules 30, a plurality of driving devices 40, and a control device (not shown), wherein:

test station 10 is used to place battery 120;

the plurality of test assemblies 30 are respectively connected with the OCV tester 20 through test harnesses, each test assembly 30 corresponds to a different battery 120, when the test assembly 30 contacts the battery 120, the battery 120 is conducted with the OCV tester 20 and forms a test loop, and when the test assembly 30 is separated from the battery 120, the battery 120 is disconnected with the OCV tester 20;

the driving devices 40 correspond to and are connected with the testing assemblies 30 one by one, and the driving devices 40 are used for driving the testing assemblies 30 to be close to the batteries 120 or far away from the batteries 120;

the control device is connected to the driving device 40, and is used for controlling the driving device 40 to drive the testing assembly 30 to move, so that the plurality of batteries 120 are sequentially conducted with the OCV tester 20.

Specifically, in the OCV testing apparatus, the testing assemblies 30 are in one-to-one correspondence with and connected to the driving devices 40, the number of the testing assemblies 30 and the driving devices 40 is not limited, and may be two, three or other numbers, each testing assembly 30 is connected to the OCV tester 20 through a testing harness, the testing assemblies 30 may be driven by the driving devices 40 to approach the battery 120 until contacting with the battery 120, at this time, the battery 120 is conducted with the OCV tester 20 and forms a testing loop, the OCV tester 20 may test the battery 120, and after the testing is completed, the testing assemblies 30 may be driven by the driving devices 40 to separate from the battery 120, so that the battery 120 is disconnected from the OCV tester 20; the control device is connected with the driving device 40 and used for controlling the driving device 40 to drive the testing assemblies 30 to move, under the control of the control device, one testing assembly 30 can be in contact with the batteries 120 at a time, other testing assemblies 30 are not in contact with the batteries 120, correspondingly, only one battery 120 is in contact with the OCV tester 20 at a time, other batteries 120 are disconnected from the OCV tester 20, after the testing of one battery 120 is completed, the testing assembly 30 is separated from the battery 120, and the other testing assembly 30 is in contact with a new battery 120, so that the new battery 120 is tested, and therefore, the testing of a plurality of batteries 120 can be completed sequentially by using one OCV tester 20. In the embodiments of the present invention, the "battery 120 is conducted with the OCV tester 20" means that both can form a test loop.

The test assembly 30 specifically includes two probes 301, the two probes 301 correspond to the positive pole and the negative pole of the battery 120, the above-mentioned "the test assembly 30 contacts with the battery 120" means that the two probes 301 contact with the positive pole and the negative pole of the battery 120, and after the two probes 301 contact with the positive pole and the negative pole of the battery 120, the battery 120 and the OCV tester 20 may form a test loop.

The driving device 40 is connected with the testing component 30 through an insulating part, and the driving device 40 can be an air cylinder, a hydraulic cylinder or other power output devices.

In this OCV test equipment, only adopt an OCV tester 20, when having avoided adopting a plurality of OCV testers 20, the signal interference that produces between the instrument causes the influence to the measuring accuracy, simultaneously, cancelled the mode of carrying out the switching through the relay, but adopt a plurality of drive arrangement 40 to drive corresponding test assembly 30 in proper order and remove, contact or phase separation through control test assembly 30 and battery 120 makes battery 120 and OCV tester 20 switch on or break off, and measure open circuit voltage and the internal resistance of different batteries 120 in proper order, avoided adopting the relay to switch, avoided the influence that the relay caused the measuring accuracy.

In some embodiments, the OCV testing apparatus further includes a supporting frame 50 and a fixing base 60 disposed on the supporting frame 50, the driving device 40 is connected to the fixing base 60, the driving device 40 is configured to drive the testing assembly 30 to perform a lifting motion along a vertical direction, and the plurality of driving devices 40 are spaced along a first direction, wherein the first direction is perpendicular to the vertical direction, and a plurality of batteries 120 are spaced along the first direction on the testing table 10.

As shown in fig. 1, the driving device 40 and the testing assembly 30 are both located above the battery 120, the testing assembly 30 can be close to the battery 120 or far from the battery 120 in the vertical direction under the driving of the driving device 40, and the plurality of driving devices 40 are arranged at intervals in a first direction, as shown in fig. 1, the first direction is the Y-axis direction; in the test bench 10, the plurality of batteries 120 are spaced in the first direction, and if the plurality of batteries 120 arranged in the first direction are defined as a group of batteries 120 to be tested, the number of the group of batteries 120 is identical to the number of the driving device 40 and the test assembly 30, and the test assembly 30 can contact the corresponding position of the battery 120 under the driving of the driving device 40, so that different batteries 120 are sequentially conducted to the OCV tester 20.

Optionally, the fixing base 60 is provided with a first adjusting rod 70 along the first direction (Y-axis direction), and the driving device 40 is slidably connected to the first adjusting rod 70. In this way, the distance between two adjacent driving devices 40 is adjustable, and when the specification of the battery 120 changes or the distance between the batteries 120 changes, the position of the driving device 40 can be adjusted, so that the testing component 30 can be contacted with the battery 120 under the action of the driving device 40.

The first adjusting rod 70 may be a polished rod, the cross section of the polished rod is not limited, for example, the cross section of the polished rod may be circular, or may also be rectangular or other shapes, the driving device 40 is fixedly connected with a mounting seat that can slide along the polished rod, and the mounting seat is manually shifted to enable the driving device 40 to slide along the polished rod, so as to adjust the distance between the driving devices 40.

Alternatively, the first adjustment lever 70 may be a first positive and negative ball screw, and the end of the first adjustment lever 70 is provided with the first rotating handle 701, in which case, the number of the driving devices 40 is two, and the two driving devices 40 are respectively provided at both ends of the first positive and negative ball screw and connected to the nut seats of the first positive and negative ball screw, and when the first rotating handle 701 rotates positively or negatively, the two driving devices 40 may be relatively close to or relatively far away from each other.

The interval of the driving device 40 is adjusted through the rotation of the first positive and negative tooth ball screw, the small change of the interval can be realized, and the precision requirement is ensured, so that the probe 301 can be better contacted with the pole of the battery 120, the adjusting process is more stable, and the play of the driving device 40 in the adjusting process can be avoided.

In order to limit the driving device 40 at a desired position after adjusting the distance between the driving devices 40, a locking member may be further provided to lock the driving device 40, so as to prevent the driving device 40 from moving randomly, for example, when the first adjusting rod 70 is a polished rod, a locking bolt may be provided on the mounting seat, the locking bolt may be screwed to make the end of the locking bolt abut against the surface of the polished rod, at this time, the mounting seat is fixed relative to the polished rod, the locking bolt is loosened to make the end of the locking bolt separate from the surface of the polished rod, and at this time, the mounting seat may slide relative to the polished rod; similarly, when the first adjusting rod 70 is a first front and back teeth ball screw, a locking member may be provided to keep the positions of the two driving devices 40 unchanged by limiting the rotation of the first front and back teeth ball screw.

Furthermore, in order to prevent the driving device 40 from rotating around the axis direction of the first adjustment rod 70 when adjusting the distance between the driving devices 40, the fixed base 60 is further provided with a first linear guide 80 along the first direction, the first linear guide 80 is provided with two first sliders 801, and the driving devices 40 are slidably connected to the first linear guide 80 through the first sliders 801.

Fig. 3 is a schematic structural diagram of the driving device, the connection base, the testing assembly and other related components of the OCV testing apparatus shown in fig. 1 on the YZ plane, in fig. 3, the first linear guide 80 and the first adjusting rod 70 are arranged in the same direction, when the driving device 40 slides along the first adjusting rod 70, the first sliding block 801 can be driven to slide along the first linear guide 80, and the first linear guide 80 restricts the rotation of the driving device 40, so that the driving device 40 cannot rotate around the axial direction of the first adjusting rod 70.

In some embodiments, the testing assembly 30 includes two probes 301, the two probes 301 respectively correspond to the positive pole and the negative pole of the battery 120, and the two probes 301 are arranged along a second direction, wherein the second direction is perpendicular to the vertical direction and the first direction, and the second direction is an X-axis direction.

Therefore, in the OCV testing apparatus, the driving device 40 can drive the testing component 30 to perform lifting movement along the vertical direction, the different driving devices 40 are arranged at intervals along the first direction, each driving device 40 is connected with one testing component 30, the two probes 301 of the testing component 30 are arranged along the second direction, the first direction, the second direction and the vertical direction are pairwise perpendicular, wherein the two probes 301 of the testing component 30 are not arranged along the first direction, so that the distance between the different driving devices 40 can be reduced, the space occupied by the whole apparatus is reduced, and the whole apparatus is compact.

During the test, a group of batteries 120 to be tested are arranged at intervals along a first direction, which is the same as the arrangement direction of the driving device 40, and each battery 120 is arranged along a second direction, that is, the positive and negative poles of the battery 120 and the two probes 301 of the test assembly 30 are arranged along the same direction and are arranged along the second direction.

Optionally, the test bench 10 is provided with a conveyor belt (not shown) along the second direction, the conveyor belt is used for conveying the batteries 120, the conveyor belt intermittently feeds the batteries, the support frame 50 is arranged on the conveying path, and in the gap between two times of feeding of the conveyor belt, the OCV tester 20 can be sequentially conducted with the plurality of batteries 120, so as to sequentially test the batteries 120; specifically, as shown in fig. 1, the supporting frame 50 includes a first supporting portion 501 and a second supporting portion 502 disposed on two sides of the conveyor belt, a cross beam 503 is disposed on the first supporting portion 501 and the second supporting portion 502, the first supporting portion 501 and the second supporting portion 502 can provide stable support for the cross beam 503, and the fixing base 60 is fixed on the cross beam 503, so that the driving device 40 and the testing assembly 30 are both located above the conveyor belt, and in terms of the driving device 40, different driving devices 40 are disposed along a first direction, that is, along a width direction of the conveyor belt, in terms of the testing assembly 30, two probes 301 of the testing assembly 30 are disposed along a second direction, that is, along a length direction of the conveyor belt, in terms of the batteries 120, a group of batteries 120 having the same number as the driving device 40 are disposed along the first direction, that is, along the width direction of the conveyor belt, a group of batteries 120 are disposed at intervals along the second direction, and each battery 120 is disposed along the second direction, and after the batteries 120 are moved to a position, the driving device 40 can drive the testing assembly 30 to make an ascending and make two probes 301 of the testing assembly contact with the positive pole or the negative pole of the battery 120, so as the positive pole of the battery assembly 30 are separated or separated from the negative pole.

Further, the cross beam 503 is slidably connected to the first supporting portion 501 and the second supporting portion 502, that is, the cross beam 503 can slide along the second direction (the length direction or the X-axis direction of the conveyor belt), the conveyor belt intermittently feeds the batteries, in the interval of two times of feeding of the conveyor belt, the OCV tester 20 can be sequentially communicated with a group of batteries 120 arranged along the first direction, and test the batteries 120, then the cross beam 503 is driven to slide along the second direction, so that the OCV tester 20 tests the second group of batteries 120 again, and so on, after the test is completed, the cross beam 503 is driven to reset, the conveyor belt feeds the batteries, and the plurality of groups of untested batteries 120 are moved to the right position again.

As shown in fig. 2, the driving device 40 is connected to the testing assembly 30 through a connecting base 90, the connecting base 90 is provided with a second adjusting rod 100, the two probes 301 are slidably connected to the second adjusting rod 100 through probe mounting bases 302, respectively, and the distance between the two probes 301 can be increased or decreased by adjusting the positions of the probe mounting bases 302, so as to adapt to batteries 120 with different specifications.

In a manner similar to the above-described manner of adjusting the distance between the driving devices 40, the second adjustment rod 100 may be a polished rod, the cross section of which may be circular, rectangular or other shapes, and the probe mounting base 302 is slidably connected to the polished rod, so that the probe 301 can be slid along the polished rod by manually shifting the probe mounting base 302, thereby adjusting the distance between the probes 301.

Alternatively, the second adjustment rod 100 may be a second positive and negative teeth ball screw, the end of the second positive and negative teeth ball screw is provided with a second rotation handle 101, the probe mounting seats 302 are respectively arranged at two ends of the second positive and negative teeth ball screw and are connected with nut seats on the second positive and negative teeth ball screw, and when the second rotation handle 101 rotates positively or negatively, the two probes 301 may be relatively close to or relatively far away from each other.

The interval of probe 301 is adjusted through the rotation of the positive and negative tooth ball screw of second, can realize the small change of interval, guarantees the required precision to make probe 301 contact with battery 120's utmost point post better, and, accommodation process is more stable, can avoid probe 301 to take place the drunkenness in accommodation process.

In order to limit the probes 301 to a desired position after adjusting the spacing between the probes 301, a locking member may be provided to lock the probes 301 to prevent the probes 301 from moving freely. Furthermore, in order to prevent the probes 301 from rotating around the axis direction of the second adjustment rod 100 when adjusting the distance between the probes 301, the connecting base 90 is further provided with a second linear guide rail 110 along the second direction, the second linear guide rail 110 is provided with two second sliders 111, and the probe mounting base 302 is slidably connected to the second linear guide rail 110 through the second sliders 111.

Fig. 4 is a schematic structural view of the OCV testing apparatus shown in fig. 1, in which the connecting socket, the testing assembly and related components therebetween are located on an XZ plane, in fig. 4, the second linear guide rail 110 and the second adjusting rod 100 are arranged in the same direction, when the driving device 40 slides along the second adjusting rod 100, the second slider 111 can be driven to slide along the second linear guide rail 110, and the second linear guide rail 110 restricts the rotation of the driving device 40, so that the driving device 40 cannot rotate around the axial direction of the second adjusting rod 100.

In some embodiments, drive device 40 comprises a pneumatic or hydraulic cylinder, with test assembly 30 attached to the end of the piston rod of the pneumatic or hydraulic cylinder; the control device comprises a control circuit and an electromagnetic valve, and the air cylinder or the hydraulic cylinder is communicated with the electromagnetic valve.

Taking the OCV test apparatus including two driving devices 40 as an example, two electromagnetic valves are disposed on a control circuit, for clarity of description, the driving devices 40, the test component 30, the battery 120, and the electromagnetic valves are all distinguished by a first and a second, if the first electromagnetic valve is energized, the first driving device drives the first detection component to descend, the second driving device remains stationary, under the driving of the first driving device, two probes of the first test component contact positive and negative poles of the first battery, at this time, the first battery and the OCV tester 20 form a loop, the OCV tester can measure the voltage and the internal resistance of the first battery, after the first electromagnetic valve is de-energized, the first test component resets, and the first battery and the OCV tester 20 are disconnected; similarly, if the second electromagnetic valve is energized, the second driving device drives the second detection assembly to descend, the first driving device remains stationary, the two probes of the second testing assembly contact the positive and negative poles of the second battery under the driving of the second driving device, at this time, the second battery and the OCV tester 20 form a loop, the OCV tester 20 can measure the voltage and the internal resistance of the second battery, and after the second electromagnetic valve is de-energized, the second testing assembly resets, and the second battery is disconnected from the OCV tester 20.

Can see through the above description, the embodiment of the utility model provides an OCV test equipment adopts multiunit drive arrangement to drive the test assembly who corresponds respectively, takes place contact or separation through control test assembly and battery and switches on or break off battery and OCV tester, in the testing process, does not have signal interference, and the measuring accuracy is higher.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The OCV testing equipment is characterized by comprising a testing platform, an OCV tester, a plurality of testing components, a plurality of driving devices and a control device;

the test bench is used for placing batteries;

2. The OCV testing apparatus according to claim 1, further comprising a support frame and a fixing seat disposed on the support frame, wherein the driving device is connected to the fixing seat, the driving device is configured to drive the testing assembly to perform an ascending and descending motion in a vertical direction, and a plurality of the driving devices are spaced in a first direction, and the first direction is perpendicular to the vertical direction;

the plurality of batteries are arranged at intervals along the first direction.

3. The OCV testing apparatus of claim 2, wherein the fixing base is provided with a first adjusting lever in the first direction, and the driving means is slidably coupled to the first adjusting lever.

4. The OCV testing apparatus of claim 3, wherein the number of the driving means is two, the first adjusting lever is a first forward and reverse threaded ball screw, and a first rotating handle for forward or reverse rotation is provided at an end of the first adjusting lever so that the two driving means are relatively close to or relatively far from each other;

and/or the fixing seat is provided with a first linear guide rail along the first direction, the first linear guide rail is provided with two first sliding blocks, and the driving device is connected to the first linear guide rail through the first sliding blocks in a sliding manner.

5. The OCV testing apparatus of claim 2, wherein the testing assembly includes two probes corresponding to positive and negative poles of the battery, respectively;

the two probes are arranged along a second direction, and the second direction is perpendicular to the vertical direction and the first direction.

6. The OCV testing apparatus of claim 5, wherein the testing table is provided with a conveyor belt for conveying the battery in the second direction;

the support frame is including setting up first supporting part and the second supporting part of conveyer belt both sides, first supporting part with be provided with the crossbeam on the second supporting part, the fixing base is fixed in the crossbeam.

7. The OCV testing device of claim 6, wherein the cross bar is slidably coupled to the first and second supports.

8. The OCV testing apparatus according to any one of claims 1-4, wherein the testing assembly includes two probes, the two probes corresponding to a positive post and a negative post of the battery, respectively;

the driving device is connected with the testing assembly through a connecting seat, the connecting seat is provided with a second adjusting rod, and the probe is connected with the second adjusting rod through a probe mounting seat in a sliding mode.

9. The OCV testing apparatus of claim 8, wherein the second adjusting lever is a second ball screw with positive and negative teeth, and a second turning handle for forward or reverse rotation is provided at an end of the second adjusting lever to relatively approach or relatively separate the two probe mounts;

and/or the connecting seat is also provided with a second linear guide rail, the second linear guide rail and the second adjusting rod are arranged in the same direction, the second linear guide rail is provided with two second sliding blocks, and the probe mounting seat is connected to the second linear guide rail through the second sliding blocks in a sliding manner.

10. The OCV testing apparatus according to any one of claims 1 to 7, wherein said actuating means comprises a pneumatic or hydraulic cylinder, said test assembly being attached to an end of a piston rod of said pneumatic or hydraulic cylinder;

the control device comprises a control circuit and an electromagnetic valve, and the air cylinder or the hydraulic cylinder is communicated with the electromagnetic valve.