CN201397381Y - A new lithium-ion battery voltage internal resistance test device - Google Patents

Abstract

The utility model discloses a novel lithium-ion battery voltage internal resistance testing device, which comprises a positive probe (1), a negative probe (2), a micro switch (3), a resistance load (4), a battery voltage An internal resistance tester (5), the micro switch (3) and the resistance load (4) form a load circuit connected in series, one end of the load circuit is connected to the positive probe (1), and the other end is connected to the negative probe (2) connected, the battery voltage internal resistance tester (5) is respectively connected to the positive electrode probe (1) and the negative electrode probe (2). The utility model discloses a new lithium-ion battery voltage internal resistance test device, which can be used to measure the voltage, internal resistance value and load voltage value of the battery at the same time, thereby simplifying the production process of the single battery and reducing the battery life. The production cost is improved, the production efficiency of the battery is improved, and the structure is simple, the operation is convenient, and the scale of the industry can be formed, which has great practical significance for production.

Description

A new lithium-ion battery voltage internal resistance test device

technical field

The utility model relates to the technical field of batteries, in particular to a novel lithium-ion battery voltage internal resistance testing device.

Background technique

Lithium-ion batteries have the advantages of high voltage, high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices, but also widely used in large and medium-sized electric devices such as electric vehicles, electric bicycles, and electric tools. On the one hand, it is the main development direction of major battery manufacturers at present.

With the continuous promotion and application of polymer lithium-ion batteries in various electrical appliances, the production quality and performance testing of batteries are becoming more and more stringent. Originally, the battery only needed to detect the two electrical performance indicators of the battery voltage and internal resistance in the production process. In order to more accurately detect the performance of the battery, the process of measuring the voltage with load is added to the current production process. The load parameter value It is the parameter value of the electrical appliance to which the battery is to be applied.

The load voltage measurement process is used to detect whether the battery can work and discharge normally when it is applied to an electrical appliance. Since the production process of measuring the voltage with load is added, operators and testing equipment need to be correspondingly increased to carry out this process, thus increasing the production cost of the battery and reducing the production efficiency of the battery.

Utility model content

In view of this, the purpose of this utility model is to provide a new type of lithium-ion battery voltage internal resistance test device, which can be used to measure the voltage and internal resistance of the battery, and the load voltage value at the same time, thereby simplifying the number of single cells. The production process reduces the production cost of the battery, improves the production efficiency of the battery, and has a simple structure and convenient operation, which can form an industrial scale and has great production practice significance.

For this reason, the utility model provides a novel lithium-ion battery voltage internal resistance testing device, which includes a positive electrode probe 1, a negative electrode probe 2, a micro switch 3, a resistive load 4, and a battery voltage internal resistance tester 5 , the micro switch 3 and the resistance load 4 form a load circuit in series, one end of the load circuit is connected with the positive probe 1, and the other end is connected with the negative probe 2, and the battery voltage internal resistance tester 5 Connect the positive electrode probe 1 and the negative electrode probe 2 respectively.

Preferably, the micro switch 3 is a push-on micro switch.

Preferably, the resistive load 4 is an adjustable resistor.

It can be seen from the above technical solutions provided by the utility model that, compared with the prior art, the utility model provides a new type of lithium-ion battery voltage internal resistance testing device, which can be used to measure the voltage and internal resistance of the battery at the same time, With load voltage value, it is a lithium-ion battery voltage internal resistance detection device with comprehensive testing functions, which simplifies the production process of the single battery, reduces the production cost of the battery, improves the production efficiency of the battery, and has a simple structure , easy to operate, can form industrial scale, and has great production practice significance.

Description of drawings

Fig. 1 is the structural representation of a kind of novel lithium-ion battery voltage internal resistance testing device provided by the utility model;

In the figure, 1 is a positive electrode probe, 2 is a negative electrode probe, 3 is a micro switch, 4 is a resistance load, and 5 is a battery voltage internal resistance tester.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of a new lithium-ion battery voltage internal resistance testing device provided by the present invention.

Referring to Fig. 1, the utility model provides a new lithium-ion battery voltage internal resistance testing device, which includes: positive probe 1, negative probe 2, micro switch 3, resistive load 4, battery voltage internal resistance test Instrument 5.

The micro switch 3 and the resistance load 4 form a load circuit connected in series, one end of the load circuit is connected to the positive probe 1 , and the other end is connected to the negative probe 2 .

It should be noted that the micro switch 3 is a push-on type micro switch, which controls the on and off of the loaded resistive load 4 by adjusting its on and off states. The resistive load 4 is preferably an adjustable resistor, so that the resistance parameters can be modified according to the detection requirements of the actual load.

The battery voltage internal resistance tester 5 is respectively connected to the positive electrode probe 1 and the negative electrode probe 2. When the utility model is used for measurement, the positive electrode probe 1 and the negative electrode probe 2 contact the positive electrode and the negative electrode of the battery respectively. , the anode probe 1 and the anode probe 2 are both metal probes.

In the present invention, the battery voltage internal resistance tester 5 can be a commonly used battery voltage internal resistance tester in the market.

For the utility model, in the specific implementation, firstly, the two probes of the positive electrode probe 1 and the negative electrode probe 2 are respectively contacted with the two ends of the positive and negative gold fingers of the battery to be tested. If the voltage and resistance of the battery are measured, then the microswitch 3 is in the disconnected state, and the voltage and the resistance value measured by the battery voltage internal resistance tester 5 are the voltage and the internal resistance value of the battery; For voltage measurement with load, keep the positive probe 1 and the negative probe 2 in contact with the two ends of the positive and negative gold fingers of the battery to be tested, and press the micro switch 3 at the same time, then the micro switch 3 is connected. Through, the resistance load 3 is connected in parallel with the positive and negative terminals of the battery to be tested, and the voltage value measured by the battery voltage internal resistance tester 5 is the loaded voltage value of the battery to be tested.

As mentioned above, in the existing battery production, it is necessary to add additional operators to carry out the voltage measurement process of the battery with load, but by using the utility model, no additional operators are needed, and the original work of two people can now be performed by one person. It can be used to measure the voltage, internal resistance and load voltage of the battery at the same time. On the one hand, the application of the device of the utility model can save the labor cost of battery production, and on the other hand, it also reduces the production time of the single battery. , improving the battery production output per unit time.

Therefore, compared with the prior art, a novel lithium-ion battery voltage internal resistance testing device provided by the utility model can be used to measure the voltage, internal resistance value and load voltage value of the battery at the same time. Lithium-ion battery voltage internal resistance detection device with comprehensive test function, which simplifies the production process of single battery, reduces the production cost of battery, improves the production efficiency of battery, and has simple structure and convenient operation, which can form an industrial scale It has great practical significance in production.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (3)

1. A novel lithium-ion battery voltage internal resistance testing device is characterized in that the device includes a positive probe (1), a negative probe (2), a micro switch (3), a resistive load (4), a battery A voltage internal resistance tester (5), the micro switch (3) and the resistance load (4) form a load circuit connected in series, one end of the load circuit is connected to the positive probe (1), and the other end is connected to the negative probe The needles (2) are connected, and the battery voltage internal resistance tester (5) is respectively connected to the positive electrode probe (1) and the negative electrode probe (2). 2. The test device according to claim 1, characterized in that the micro switch (3) is a push-on type micro switch. 3. The test device according to claim 1 or 2, characterized in that the resistive load (4) is an adjustable resistor.

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