Battery test clamp

Abstract

The invention discloses a battery test clamp which comprises a test base and a battery clamping assembly. The battery clamping assembly is arranged above the test base, and the bottom of the battery clamping assembly is connected with the top of the test base by fasteners. The battery test clamp has the advantages that a plurality of batteries can be tested by the single battery test clamp; probes of the battery test clamp are adaptive and can be in sufficient contact with battery terminals even under the conditions that the surfaces of the battery terminals are not perpendicular to the probes or the surfaces of the battery terminals are not sufficiently smooth, and the probes only have extremely low contact resistance; all the probes can be separated from one another, accordingly, the test safety and reliability can be improved, and short-circuit risks can be prevented; electric power and electronic cables are sufficiently and reasonably constrained and are clearly routed in order, and accordingly the battery test clamp can bring convenience to tracing and checking circuits; the battery test clamp not only can be used for testing square batteries, but also can be used for testing cylindrical batteries.

Description

technical field [0001] The invention relates to a battery test fixture, which belongs to the technical field of fixtures and tooling. Background technique [0002] The power battery industry has developed rapidly in recent years. Various tests and researches have been carried out on power batteries from enterprises to scientific research institutions. In enterprises, large-scale automated equipment can be used to test the performance parameters of batteries, but in scientific research institutions or enterprises. In this stage, a small test device is required to test the performance parameters of the battery. The performance parameter test mentioned here refers to charging and discharging the battery and monitoring the voltage, current and temperature rise of the battery. [0003] To accurately measure various performance parameters of the battery, it is necessary to ensure that the ambient temperature and ambient humidity are consistent each time the measurement is performe...

AI Technical Summary

Problems solved by technology

[0006] Existing test devices have the problem of low test efficiency. A set of devices usually only tests one battery, especially not suitable for batch testing of batteries in a constant temperature and humidity chamber. The test includes charging and discharging the battery, Voltage monitoring and temperature measurement, such as CN102967732 A, CN103825043 A

[0007] Most of the existing technologies cannot or are not suitable for charging and discharging power batteries, especially when using high current (above 1C) for charging and discharging

[0008] Chinese patent CN102967732A discloses a fixture for measuring internal resistance of a battery, such as figure 1 As shown, this invention is used to measure the internal resistance of batteries. This set of devices is not suitable for measuring multiple batteries at the same time, and because there is no limit at the bottom of the battery (the right boundary of the box in the figure), it depends entirely on the surface of the battery and the bearing plate 1 friction to ensure the contact between the test terminal 21 and the battery, in this case the contact resistance will be very large, and the device cannot be used to charge and discharge the battery

[0009] Chinese patent CN202502118U discloses a slide-type high-speed four-wire battery special measuring fixture, such as figure 2 As shown, this patent is relatively more suitable for batch measurement, but it is only suitable for batteries with electrodes separated at both ends. It is not suitable for batteries with electrodes on the same side. It cannot be used for charging and discharging of power batteries. The battery is not fixed reliably enough, and there is a risk of falling off.

[0010] Chinese patent CN103825043A discloses a special clamp for gravity battery formation, such as image 3 As shown, this invention is a special fixture for battery formation (formation refers to charging the battery with a current of ≤0.2C for the first time), which is suitable for mass production and can charge and discharge power batteries, but there are the following problems: 1. The battery placement process The positioning is not accurate and reliable enough, it needs to rely on human experience, and if the battery is measured in batches in a constant temperature and humidity box, the installation position of the battery will become invisible, and the battery cannot be installed accurately, and if the touch of the hand is used as a judgment The basis is that it is unsafe and the efficiency will be reduced; 2. The bottom of the battery is completely covered by part 1, and part of the side is covered by the left negative spring piece 3 and the right negative spring piece 4, and the covered part cannot be fixed. Acquisition of temperature signals; 3. During batch testing, the lines are scattered and unconstrained, and there is a problem of large contact resistance

[0011] Chinese patent CN205404615U discloses a fixture for testing battery current, such as Figure 4 shown, only suitable for measuring pouch batteries

[0012] Chinese patent CN105990701A discloses a high-current pole-type battery fixture, which is only suitable for measuring cylindrical batteries

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