Novel lithium battery three-wire test clamp

Abstract

The utility model discloses a novel lithium battery three-wire test fixture in the technical field of storage batteries, which comprises a test case, a detection head assembly is mounted on one side of the test case, the detection head assembly comprises a cylinder, an upper fixing block, an adjusting screw and a plurality of copper blocks, the cylinder is mounted on one side of the test case, the upper fixing block is fixed at the telescopic end of the cylinder, and the adjusting screw is fixed at the telescopic end of the cylinder. A lower fixing block is oppositely arranged under the upper fixing block, the upper fixing block and the lower fixing block are each provided with three copper blocks, and the copper blocks are used for being connected with the battery positive electrode, the battery negative electrode and the detection electrode output of an outgoing wire of the lithium battery. The copper blocks are electrically connected with a voltage internal resistance comprehensive tester, and a photoelectric sensor for detecting the lithium battery is arranged on one side of the lower fixing block; the lithium battery testing device is simple in structure, convenient to operate, high in testing efficiency and testing accuracy, and capable of testing the working current, the working voltage, the on resistance and the thermistor of the lithium battery at the same time.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically a novel three-wire test fixture for lithium batteries. Background Technology

[0002] With the continuous development of science and technology, lithium batteries have been widely used in various electronic products and new energy vehicles. To ensure the quality of lithium batteries, testing their electrical performance parameters is crucial. However, most existing lithium battery testing fixtures suffer from problems such as complex testing procedures, inconvenient operation, low testing efficiency, and poor testing contact. This is especially cumbersome when simultaneously performing three-wire tests on the lithium battery's operating current, operating voltage, on-resistance, and thermistor.

[0003] Based on this, this utility model designs a novel three-wire test fixture for lithium batteries to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a novel three-wire test fixture for lithium batteries to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel lithium battery three-wire test fixture includes a test chassis. A detection head assembly is mounted on one side of the test chassis. The detection head assembly includes a cylinder, an upper fixing block, an adjusting screw, and multiple copper blocks. The cylinder is mounted on one side of the test chassis, and the upper fixing block is fixed to the telescopic end of the cylinder. A lower fixing block is positioned directly below the upper fixing block. Three copper blocks are mounted on the upper and lower fixing blocks respectively for connecting to the positive, negative, and detection output terminals of the lithium battery's external wiring. A voltage and internal resistance comprehensive tester is integrated inside the test chassis. The copper blocks are electrically connected to the voltage and internal resistance comprehensive tester. A photoelectric sensor for detecting lithium batteries is located on one side of the lower fixing block.

[0007] As a further embodiment of this utility model: the test chamber includes a relay, a control power supply, a solenoid valve, and a signal amplifier. A switch is provided on the surface, and an air inlet for wiring is provided on the panel. The output signal of the photoelectric sensor is electrically connected to the control coil of the relay. The relay is normally open and connected to the power circuit of the solenoid valve. The solenoid valve is used to control the air path of the cylinder.

[0008] As a further embodiment of this utility model: a bracket plate for mounting cylinders is fixed to the top of the front panel of the test chassis, and a side base for mounting the lower fixing block is fixed to the bottom of the front panel of the test chassis.

[0009] As a further embodiment of this utility model: the top of the upper fixing block is provided with a plurality of vertical holes communicating with the sliding groove, and an adjusting screw is threaded into the vertical hole, the bottom end of the adjusting screw being connected to the corresponding copper block.

[0010] As a further embodiment of this utility model: multiple sliding grooves are respectively provided on the opposite surfaces of the upper fixing block and the lower fixing block, and the copper block is vertically slidably locked in the sliding groove by a spring.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Simple structure: This utility model adopts a modular design, with compact connections between components, resulting in a simple and clear overall structure;

[0013] 2. Easy to operate: Simply place the lithium battery wires on top of the base plate to complete the test automatically without manual intervention;

[0014] 3. High testing efficiency: It can simultaneously test the working current, working voltage, on-resistance, and thermistor of lithium batteries, greatly improving testing efficiency.

[0015] 4. Precise testing: The cylinder pressing method is adopted, and the pressing contact force is adjustable to avoid poor contact and high internal resistance.

[0016] 5. Wide range of applications: It has good compatibility with lithium batteries of different specifications and models. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure after removing the chassis outer shell;

[0020] Figure 4 This is a schematic diagram of the structure when the upper and lower fixing blocks are open.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] Test chassis 1, switch 10, relay 11, control power supply 12, solenoid valve 13, signal amplifier 14, bracket 15, side base 16, photoelectric sensor 17, air inlet 18, cylinder 2, upper fixing block 20, adjusting screw 21, slide 22, copper block 23, lower fixing block 24. Detailed Implementation Example 1

[0023] Please see Figure 1-4 This utility model provides a technical solution: a novel lithium battery three-wire test fixture, including a test housing 1. A detection head assembly is installed on one side of the test housing 1. The detection head assembly includes a cylinder 2, an upper fixing block 20, an adjusting screw 21, and multiple copper blocks 23. The cylinder 2 is installed on one side of the test housing 1. The upper fixing block 20 is fixed to the telescopic end of the cylinder 2. A lower fixing block 24 is arranged opposite to the upper fixing block 20. Three copper blocks 23 are respectively installed on the upper fixing block 20 and the lower fixing block 24 for connecting to the positive terminal, negative terminal, and detection terminal output of the lithium battery's external wire. A voltage internal resistance comprehensive tester is integrated inside the test housing 1. The copper blocks 23 are electrically connected to the voltage internal resistance comprehensive tester. A photoelectric sensor 17 for detecting lithium batteries is arranged on one side of the lower fixing block 24.

[0024] During operation, when the lithium battery moves between the upper fixed block 20 and the lower fixed block 24, cylinder 2 drives the upper fixed block 20 to move downward. The upper fixed block 20, together with the multiple copper blocks 23 respectively set on the lower fixed block 24, connects to the positive terminal, negative terminal and detection terminal output of the lithium battery, and forms a test circuit with the voltage internal resistance comprehensive tester. The voltage internal resistance comprehensive tester built into the test box 1 performs a one-time rapid test on the parameters of the lithium battery, measuring the voltage, conduction internal resistance, discharge overcurrent and thermistor of the lithium battery. After the test is completed, cylinder 2 rises again to complete the test. The photoelectric sensor 17 is mainly used as the detection signal to drive cylinder 2.

[0025] The test chamber 1 includes a relay 11, a control power supply 12, a solenoid valve 13, and a signal amplifier 14. A switch 10 is provided on the surface of the 1. An air inlet 18 for wire input is provided on the panel of the 1. The output signal of the photoelectric sensor 17 is electrically connected to the control coil of the relay 11. The relay 11 is normally open and connected to the power circuit of the solenoid valve 13. The solenoid valve 13 is used to control the air path of the cylinder 2.

[0026] During operation, the photoelectric sensor 17 outputs a detection signal to the relay 11. The control coil of the relay 11 receives a signal input, and the normally open contact closes. The solenoid valve 13 of the control cylinder 2 is connected to the control power supply 12, and the telescopic rod of the cylinder 2 descends. The copper block 23 contacts different electrodes of the lithium battery wire. At this time, the lithium battery, the copper block 23, and the voltage and internal resistance comprehensive tester form a test circuit, and the tester starts testing. When it is necessary to disconnect the test, simply do not block the photoelectric sensor 17, and the solenoid valve 13 will be de-energized, the cylinder 2 will rise, and the test will end.

[0027] The front panel of the test chamber 1 is fixed with a bracket plate 15 for mounting the cylinder 2 at the top, and the front panel of the test chamber 1 is fixed with a side base 16 for mounting the lower fixing block 24 at the bottom.

[0028] The upper fixing block 20 has a plurality of vertical holes that communicate with the slide groove 22 at its top. An adjusting screw 21 is threaded into the vertical hole, and the bottom end of the adjusting screw 21 is connected to the corresponding copper block 23.

[0029] During operation, the adjustable screw 21 can adjust the extension length of the copper block 23 on one side of the upper fixing block 20, which can be adapted to lithium batteries of different thicknesses. Example 2

[0030] The difference between this embodiment and Embodiment 1 is that:

[0031] The upper fixing block 20 and the lower fixing block 24 are respectively provided with multiple sliding grooves 22 on their opposite surfaces, and the copper block 23 is vertically slidably locked in the sliding grooves 22 by a spring;

[0032] During operation, the spring can drive the copper block 23 to slide vertically, so that when the upper fixed block 20 and the lower fixed block 24 approach and close together, the copper block 23 can slowly press against the electrode potential of the lithium battery instead of impacting it, thus reducing the impact on the lithium battery itself.

[0033] When the copper block 23 on the upper fixed block 20 is equipped with an adjusting screw 21, the copper block 23 is connected to the adjusting screw 21 through a spring, thereby ensuring the elasticity of the contact while adjusting the extension length of the copper block 23.

Claims

1. A novel lithium battery three-wire test fixture, comprising a test chassis (1), wherein a test head assembly is mounted on one side of the test chassis (1), characterized in that: The detection head assembly includes a cylinder (2), an upper fixing block (20), an adjusting screw (21), and multiple copper blocks (23). The cylinder (2) is installed on one side of the test housing (1). The upper fixing block (20) is fixed to the telescopic end of the cylinder (2). A lower fixing block (24) is arranged opposite to the upper fixing block (20). Three copper blocks (23) are respectively installed on the upper fixing block (20) and the lower fixing block (24) for connecting to the positive terminal, negative terminal, and detection terminal output of the lithium battery's external wire. A voltage internal resistance comprehensive tester is integrated inside the test housing (1). The copper blocks (23) are electrically connected to the voltage internal resistance comprehensive tester. A photoelectric sensor (17) for detecting lithium batteries is arranged on one side of the lower fixing block (24).

2. The novel lithium battery three-wire test fixture according to claim 1, characterized in that: The test chassis (1) includes a relay (11), a control power supply (12), a solenoid valve (13) and a signal amplifier (14). A switch (10) is provided on the surface of the (1). An air inlet (18) for wire entry is provided on the panel of the (1). The output signal of the photoelectric sensor (17) is electrically connected to the control coil of the relay (11). The relay (11) is normally open and connected to the power supply circuit of the solenoid valve (13). The solenoid valve (13) is used to control the actuation gas of the cylinder (2).

3. The novel lithium battery three-wire test fixture according to claim 1, characterized in that: The front panel of the test chamber (1) is fixed with a bracket plate (15) for mounting the cylinder (2) at the top, and the front panel of the test chamber (1) is fixed with a side base (16) for mounting the lower fixing block (24) at the bottom.

4. A novel lithium battery three-wire test fixture according to claim 1, characterized in that: Multiple grooves (22) are respectively provided on the opposite surfaces of the upper fixing block (20) and the lower fixing block (24), and the copper block (23) is vertically slidably locked in the groove (22) by a spring.

5. A novel lithium battery three-wire test fixture according to claim 4, characterized in that: The top of the upper fixing block (20) has a plurality of vertical holes that communicate with the slide groove (22). An adjusting screw (21) is threaded into the vertical hole, and the bottom end of the adjusting screw (21) is connected to the corresponding copper block (23).

Images