Battery module DCR testing device

Abstract

The utility model discloses a battery module DCR testing device, and belongs to the technical field of battery module testing. The device comprises a test bench and a DCR test machine arranged on one side of the test bench, an electrode detection mechanism and two DCR test wire harnesses are arranged on the test bench, an electrode switching knife switch is arranged between the DCR test machine and the two DCR test wire harnesses, the electrode switching knife switch is provided with two moving contacts and four static contacts, and the two moving contacts and the four static contacts are arranged on the test bench. The four static contacts are respectively arranged at the two ends of the two moving contacts in the swinging direction, the two static contacts at the same end are connected with different electrodes, the two static contacts at the two ends of the same moving contact in the swinging direction are connected with different electrodes, and the two static contacts connected with the same electrode form a group; the two moving contacts are electrically connected with the positive electrode and the negative electrode of the DCR testing machine respectively, and the two groups of static contacts are electrically connected with the two DCR testing wire harnesses respectively, or the two moving contacts are electrically connected with the two DCR testing wire harnesses respectively, and the two groups of static contacts are electrically connected with the positive electrode and the negative electrode of the DCR testing machine respectively. The utility model has the advantages of lower cost, convenience in use and high safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery module test technical field especially relates to a battery module DCR testing device. BACKGROUND

[0002] After battery is assembled into module or PACK, needs testing DCR value, and the parameter value of testing mainly evaluates the impedance value of welding or connecting end. In actual production process, the battery module of collinear production is not only one type, and the CCS installation direction of different types of battery module can be inconsistent, thereby leading to the positive and negative direction of battery module is inconsistent, and simultaneously, the test personnel is only responsible for connecting two positive and negative DCR test harnesses in fixed position on the positive and negative of battery module, this requires the positive and negative position of battery module and the position of two positive and negative DCR test harnesses correspond. For this reason, the existing production line generally needs to detect the positive and negative position of battery module first, once the polarity of DCR test harness is found to be mismatched, then the battery module is rotated 180 DEG using jacking rotary mechanism to switch the positive and negative orientation, so that it is matched with the polarity of DCR test harness.

[0003] However, the cost of jacking rotary mechanism is relatively high, and a larger space is needed to support, and the weight of battery module is large, and there is a security risk when rotating. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems of the prior art, and provides a battery module DCR testing device, which is lower in cost, convenient to use and high in safety.

[0005] The utility model aims at solving the problems of the prior art, and provides a battery module DCR testing device, which is lower in cost, convenient to use and high in safety.

[0006] A battery module DCR testing device, including test table, the DCR testing machine of being located at the one side of test table, be equipped with electrode detection mechanism and two DCR test harnesses on test table, be equipped with electrode switching knife gap between DCR testing machine and two DCR test harnesses, electrode switching knife gap is equipped with two moving contacts and four static contacts, four static contacts are divided and are located at both ends of the swing direction of two moving contacts, the two static contacts of same end are connected to different electrodes, the two static contacts at both ends of the swing direction of a moving contact are connected to different electrodes, and the two static contacts connected to the same electrode form a group;Two moving contacts are connected to the positive and negative of DCR testing machine respectively, and two groups of static contacts are connected to two DCR test harnesses respectively, or two moving contacts are connected to two DCR test harnesses respectively, and two groups of static contacts are connected to the positive and negative of DCR testing machine respectively.

[0007] As preferred, the electrode switching knife gap is located at the side of DCR testing machine.

[0008] Preferably, the electrode switching knife switch comprises a knife switch body and a base, and the base is provided with a support frame at a lower end, and the support frame is connected with the ground.

[0009] Preferably, the base is close to the side of the DCR testing machine, and the knife switch body is arranged on the side of the base away from the DCR testing machine.

[0010] Preferably, the support frame comprises two support rods and a support plate arranged at lower ends of the two support rods, and a reinforcing rib is arranged between the support plate and the support rods.

[0011] Preferably, the electrode detection mechanism comprises a multimeter and a driving cylinder, and a probe of the multimeter is arranged at an output end of the driving cylinder.

[0012] Preferably, the DCR testing machine is provided with an electrode error alarm at an upper end.

[0013] Preferably, the test table is provided with an electrode switching operation prompt screen above.

[0014] The battery module DCR testing device has the advantages that:

[0015] 1. The electrode switching knife switch is used to change the positive and negative electrode connection relationship between the two DCR testing wire harnesses and the DCR testing machine, so as to change the polarity of the two DCR testing wire harnesses, thereby the battery module does not need to be rotated, the device cost is reduced, the use is more convenient, and the safety is higher.

[0016] 2. The electrode switching knife switch can be directly added on the basis of the existing equipment, without the need to specially design and install a space, and is easy to implement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure schematic view of a battery module DCR testing device provided by the embodiment of the present application is shown in the figure;

[0018] Figure 2 A principle schematic view of an electrode switching knife switch provided by the embodiment of the present application is shown in the figure;

[0019] Figure 3 A structure schematic view of an electrode switching knife switch provided by the embodiment of the present application is shown in the figure;

[0020] In the figure:

[0021] 1-test table; 2-DCR testing machine; 3-electrode switching knife switch; 31-moving contact; 32-stationary contact; 301-knife switch body; 302-base; 3031-support rod; 3032-support plate; 3033-reinforcing rib; 3034-connection beam; 4-DCR testing wire harness; 5-battery module; 6-electrode error alarm; 7-electrode switching operation prompt screen. DETAILED DESCRIPTION

[0022] The utility model will make further detailed description in connection with the drawings and specific embodiment.

[0023] As Figure 1 The embodiment provides a battery module DCR testing device, including test platform 1, the DCR testing machine 2 of being located in test platform 1 one side, be equipped with electrode detection mechanism and two DCR test harnesses 4 on test platform 1, be equipped with electrode switching knife gap 3 between DCR testing machine 2 and two DCR test harnesses. Wherein, DCR testing machine 2 is prior art, and its positive and negative pole is generally connected by two DCR test harnesses, and the positive and negative pole of battery module is connected by DCR test harness to carry out detection. In order to cope with the situation that the positive and negative pole position of battery module 5 does not match DCR test harness, the positive and negative pole of DCR testing machine 2 and two DCR test harnesses are provided with motor switching knife gap 3, for changing the connection relationship of two DCR test harnesses and the positive and negative pole of DCR testing machine, namely the polarity of two DCR test harnesses, to ensure the normal progress of testing, thereby avoiding rotating battery module, and the cost of the whole device is lower, and it is more convenient to use, and the safety is higher.

[0024] As Figure 2 As shown in the figure, electrode switching knife gap 3 is equipped with two moving contacts 31 and four static contacts 32, four static contacts 32 are separately arranged at both ends of the swing direction of two moving contacts 31, two static contacts at the same end are connected to different electrodes, two static contacts at both ends of the swing direction of the same moving contact are connected to different electrodes, and two static contacts connected to the same electrode form a group;Two moving contacts 31 are respectively electrically connected with the positive and negative pole of DCR testing machine 2, and two groups of static contacts 32 are respectively electrically connected with two DCR test harnesses, so that when two moving contacts 31 swing from one end of two static contacts to the other end of two static contacts, the connection relationship of two moving contacts and two groups of static contacts is exchanged, so that the connection relationship of two DCR test harnesses and the positive and negative pole of DCR testing machine is changed. Of course, two moving contacts 31 can also be respectively electrically connected with two DCR test harnesses, and two groups of static contacts 32 can be respectively electrically connected with the positive and negative pole of DCR testing machine 2. As described above, the device only needs one push or pull knife gap action, that is, the polarity of DCR test harness can be quickly switched, which is more convenient to use, and the overall test efficiency is higher.

[0025] As Figure 1 As shown in the figure, electrode switching knife gap 3 is arranged at the side of DCR testing machine 2, so as to facilitate wiring, and also avoid affecting the original structure of the device.

[0026] As Figure 3As shown, the electrode switching knife switch 3 comprises a knife switch body 301 and a base 302, the lower end of the base 302 is provided with a support frame, the support frame is connected with the ground through bolts, in this way, the electrode switching knife switch 3 does not need to be installed on the original device structure, thus avoiding affecting the original structure and being easy to implement. At the same time, in order to avoid the electrode switching knife switch 3 occupying the front transverse space of the test table, the base 302 is vertically close to the side of the DCR testing machine 2, the knife switch body 301 is arranged on the side of the base 302 away from the DCR testing machine 2, through the vertical arrangement of the base 302, the occupation of the transverse space is reduced. The support frame has simple structure and high stability, comprising two support rods 3031, a support plate 3032 arranged at the lower end of the two support rods 3031, a reinforcing rib 3033 arranged between the support plate 3032 and the support rod 3031, and a connecting beam 3034 arranged between the two support rods 3031.

[0027] In addition, the structure of the electrode detection mechanism is relatively conventional, mainly comprising a multimeter and a driving cylinder, the pen of the multimeter is arranged at the output end of the driving cylinder, that is, when the battery module is in place, the pen is driven by the driving cylinder to contact the positive and negative electrodes of the battery module, so as to detect the positive and negative electrode positions of the battery module by the multimeter. When the electrode detection mechanism detects that the positive and negative electrode positions of the battery module are misaligned, the electrode error alarm 6 arranged on the upper end of the DCR testing machine 2 can sound and light alarm, and the electrode switching operation prompt screen 7 on the test table 1 can also give a text reminder, so as to enable the tester to operate the knife switch to switch the polarity of the DCR test harness in time.

[0028] The above is only a preferred specific embodiment of the present application, which is an implementation mode based on the overall concept of the present application, and the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery module DCR testing device, comprising a test table, a DCR testing machine arranged on one side of the test table, an electrode detection mechanism and two DCR test harnesses arranged on the test table, characterized in that, The electrode switching knife switch is provided between the DCR testing machine and the two DCR testing wire harnesses.

2. The battery module DCR test apparatus of claim 1, wherein, The electrode switching knife switch is provided on the side of the DCR testing machine.

3. The battery module DCR test apparatus of claim 1, wherein, The electrode switching knife switch comprises a knife switch body and a base.

4. The battery module DCR test apparatus of claim 3, wherein, The base is close to the side of the DCR testing machine, and the knife switch body is arranged on the side of the base away from the DCR testing machine.

5. The battery module DCR test apparatus of claim 3, wherein, The support frame comprises two support rods and a support plate arranged at the lower ends of the two support rods.

6. The battery module DCR test apparatus of claim 1, wherein, The electrode detection mechanism comprises a multimeter and a driving cylinder.

7. The battery module DCR test apparatus of claim 1, wherein, The DCR testing machine is provided with an electrode error alarm at the upper end.

8. The battery module DCR test apparatus of claim 1, wherein, The test bench is provided with an electrode switching operation prompt screen above.

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