Insulating pad for testing cylindrical lithium battery and testing method thereof
A test method and insulating pad technology, which is applied to secondary batteries, battery pack parts, battery boxes/coats, etc., and can solve problems such as easy contact with the lead-out body of the positive cap and short-circuit of the negative steel shell.
Active Publication Date: 2016-08-24
ZHEJIANG XINGHAI ENERGY TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a cylindrical lithium battery test insulating mat and testing method, which can effectively solve the problem that the positive cap lead-out body of the existing cylindrical lithium battery is easy to touch the negative steel shell and cause a short circuit during the test.
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[0012] refer to figure 2 , image 3 , Figure 4 It is an embodiment of an insulating pad for testing a cylindrical lithium battery of the present invention. An insulating pad for testing a cylindrical lithium battery includes a circular insulating pad body 5, and the center of the insulating pad body 5 is provided with a positive electrode cap. 1 matching round hole 6, the back of the insulating pad body 5 is provided with two clamping columns 7 that are compatible with the process hole 2 of the positive cap 1, and the two opposite clamping columns 7 Elastic plug strips 8 are provided on the side walls. The elastic plug strips 8 are vertically arranged and have a large semicircular cross section. The outer eaves of the insulating pad body 5 are provided with elastic buckle edges 9 extending downward. The elastic buckle edge 9 is provided with a block 10 for clamping the groove 4 on the outer steel case 3 of the cylindrical lithium battery.
[0013] A test method using an i...
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The invention discloses an insulating mat for testing a cylindrical lithium battery. The insulating mat comprises a ring-shaped insulating mat body, wherein the back surface of the insulating mat body is provided with two clamping columns adapted to an anode cover cap process hole; the two opposite side walls of each clamping column are both provided with elastic plug strips; the elastic plug strips are vertically arranged, and the cross sections of the elastic plug strips are in large semi-circular shapes. A testing method comprises the following steps: pressing the insulating mat body on the anode cover cap end of the cylindrical lithium battery, and exposing the anode cover cap of the cylindrical lithium battery from a circular hole of the insulating mat body; shielding a cathode steel shell positioned beside the anode cover cap through the insulating mat body, and then pressing the insulating mat body so that the clamping columns enter the anode cover cap process hole, wherein the elastic plug strips are positioned between the clamping columns and the side wall of the anode cover cap process hole; then respectively welding a nickel strip or steel strip used for testing on the anode cover cap and the cathode of the cylindrical lithium battery. The insulating mat disclosed by the invention prevents an anode cover cap leading body from being contacted the cathode steel shell during the testing by separating the anode cover cap and the cathode.
Description
technical field [0001] The invention relates to an insulating pad for testing a cylindrical lithium battery and a testing method. Background technique [0002] Such as figure 1 As shown, there are at least two process grooves 2 on the side of the positive electrode cap 1 of the small cylindrical lithium battery, and the negative electrode is connected to the entire outer steel shell 3, and a circle of grooves 4 is also provided at the end of the outer steel shell close to the positive electrode cap. Before the cylindrical lithium battery leaves the factory, various tests need to be carried out, such as: short circuit test, overcharge test, high rate cycle test, etc., but there is only an insulating sealing ring between the negative electrode steel case and the positive electrode cap, making the test It is easy to cause a short circuit by bumping the nickel strip or the steel strip drawn out of the positive electrode cap into the negative electrode steel case. Contents of ...
Claims
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IPC IPC(8): H01M10/48
CPCH01M50/543H01M50/572Y02E60/10
Inventor 李新丽潘飞华吴晓潭李飞杨永
Owner ZHEJIANG XINGHAI ENERGY TECH