Rapid detection device for positive electrode and negative electrode of soft package sodium-ion battery

Abstract

The utility model relates to an anode and cathode rapid detection device of a soft package sodium ion battery. The anode and cathode rapid detection device comprises a diode, an adjustable resistor and an electric connecting piece, the diode comprises a P end and an N end; the adjustable resistor is connected in series with the P end or the N end of the diode; the electric connecting piece comprises a first electric contact piece and a second electric contact piece which are electrically connected to the two ends of the series circuit respectively; wherein when the positive electrode and the negative electrode of the to-be-detected soft-package sodium-ion battery are rapidly detected, the first electric contact piece and the second electric contact piece are respectively contacted with two tabs of the soft-package sodium-ion battery; if the diode gives out an alarm, the tab close to one side of the P end of the diode is the positive electrode, and if the diode does not give out an alarm, the tab close to one side of the N end of the diode is the positive electrode. The positive and negative electrode rapid detection device of the soft package sodium ion battery is simple in structure, convenient to operate, low in cost and high in reliability, and the positive and negative electrode detection efficiency and the detection reliability of the soft package sodium ion battery can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium ion batteries, in particular to a positive and negative electrode rapid detection device for a soft-pack sodium ion battery. Background Art

[0002] Sodium-ion batteries are a new type of energy storage device with many advantages, such as abundant sodium resources and low prices, high safety, good fast charging performance and good low-temperature performance. For sodium-ion batteries, sodium ions will not form alloys with aluminum. Therefore, aluminum foil can be used as current collectors for both positive and negative electrodes, which can reduce costs and battery weight. At the same time, aluminum tabs can also be used for both positive and negative poles of soft-pack sodium-ion batteries. Compared with the copper-plated nickel tabs or nickel tabs of lithium-ion batteries, the cost is lower, and the welding process of aluminum tabs is simpler, further reducing manufacturing costs.

[0003] However, since the positive and negative tabs of the soft-pack sodium-ion battery are made of aluminum, it is difficult to clearly mark them and to distinguish them with the naked eye. This will easily lead to reverse connection during the battery stringing and welding process, affecting the battery life and even causing a serious risk of battery explosion due to short circuit. Existing battery positive and negative pole detection devices generally use multimeters, positive and negative pole testers, etc., which have the disadvantages of high cost, complex structure and function, poor digital display sensibility, and difficult equipment maintenance. Summary of the invention

[0004] The purpose of the utility model is to provide a positive and negative electrode rapid detection device for a soft-pack sodium ion battery, which has the advantages of simple structure, convenient operation, low cost, high reliability, etc., thereby greatly improving the positive and negative electrode detection efficiency and detection reliability of the soft-pack sodium ion battery.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A positive and negative electrode rapid detection device for a soft-pack sodium ion battery, the positive and negative electrode rapid detection device comprising:

[0007] A diode, the diode comprising a P terminal and an N terminal;

[0008] an adjustable resistor, the adjustable resistor being connected in series with the P terminal or the N terminal of the diode; and

[0009] An electrical connector, the electrical connector comprising a first electrical contact and a second electrical contact, the first electrical contact and the second electrical contact being electrically connected to two ends of a circuit in which an adjustable resistor and a diode are connected in series through wires;

[0010] Among them, when the positive and negative poles of the soft-pack sodium ion battery to be tested are quickly detected, the first electrical contact and the second electrical contact are respectively contacted with the two pole ears of the soft-pack sodium ion battery; if the diode issues a warning, the pole ear close to the P end of the diode is the positive pole, and if the diode does not issue a warning, the pole ear close to the N end of the diode is the positive pole.

[0011] As a preferred technical solution, the reverse breakdown voltage of the diode is higher than the theoretical voltage of the soft-pack sodium-ion battery to be tested. The working voltage of the diode of the utility model can cover the theoretical voltages of different types of sodium-ion batteries. For example, the reverse breakdown voltage of the diode is about 5V, which is much higher than the theoretical voltage of the sodium-ion battery (generally lower than 4V).

[0012] As a preferred technical solution, the diode is a light emitting diode.

[0013] As a preferred technical solution, the diode is a sound-emitting diode.

[0014] When the light emitting diode or the sound emitting diode of the utility model works normally, they respectively have good light / sound sensibility and play a warning and identification role.

[0015] As a preferred technical solution, the adjustable resistor is at least one of an electronic component adjustable resistor, a ceramic disc adjustable resistor, a patch adjustable resistor, and a wirewound adjustable resistor. The adjustable resistor of the utility model is connected in series with a diode to play a series protection function and prevent the diode from being broken down by a large current.

[0016] As a preferred technical solution, the adjustable resistance has a resistance value adjustment range of 70 to 360Ω.

[0017] As a preferred technical solution, at least one of the first electrical contact and the second electrical contact is a probe.

[0018] As a preferred technical solution, at least one of the first electrical contact and the second electrical contact is a metal clip.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The positive and negative poles rapid detection device of the soft-pack sodium ion battery of the utility model utilizes the one-way channel characteristic of the diode and the sound and light warning function, combined with the series protection function of the adjustable resistor. The overall device is not only low in cost and simple in structure, but also easy to operate and highly reliable, and can realize the rapid detection of the positive and negative poles of the soft-pack sodium ion battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of the structure of a rapid detection device for positive and negative electrodes of a soft-pack sodium ion battery.

[0022] Among them, there are a diode 1, an adjustable resistor 2, a wire 3, a first electrical contact 4, a second electrical contact 5, a soft-pack sodium-ion battery 6, a first pole ear 7, and a second pole ear 8. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] Example

[0025] like Figure 1 As shown, the positive and negative pole rapid detection device of the soft-pack sodium ion battery in this embodiment includes a diode 1, an adjustable resistor 2 and an electrical connector; the diode 1 includes a P terminal and an N terminal; the adjustable resistor 2 is connected in series with the N terminal of the diode 1; the electrical connector includes a first electrical contact 4 and a second electrical contact 5, the first electrical contact 4 and the second electrical contact 5 are respectively electrically connected to the two ends of the circuit connected in series by the adjustable resistor 2 and the diode 1 through a wire 3, that is, the first electrical contact 4 is electrically connected to the P terminal of the diode 1 through a wire 3, and the second electrical contact 5 is electrically connected to one end of the adjustable resistor 2 through another wire 3; wherein, when the positive and negative poles of the soft-pack sodium ion battery 6 to be tested are rapidly detected, the first electrical contact 4 and the second electrical contact 5 are respectively contacted with the two pole ears of the soft-pack sodium ion battery 6; if the diode 1 issues a warning, the pole ear close to the P terminal side of the diode 1 is the positive pole, and if the diode 1 does not issue a warning, the pole ear close to the N terminal side of the diode 1 is the positive pole. In this embodiment, the diode 1 uses a light-emitting diode. The reverse breakdown voltage (5V) of the diode 1 described in this embodiment is higher than the theoretical voltage of the soft-pack sodium ion battery 6 to be tested. The adjustable resistor 2 in this embodiment uses an electronic component adjustable resistor 2, a ceramic disc adjustable resistor 2, a patch adjustable resistor 2, and a wire-wound adjustable resistor 2, and the resistance value of the adjustable resistor 2 is adjusted in the range of 70 to 360Ω. Among them, the resistance value of the adjustable resistor 2 is adjusted with different types of sodium ion batteries. For example, the sodium ion battery with layered oxide positive electrode material generally has a voltage of 3.6V, and the adjustable resistor 2 should be adjusted to any value in the range of 70 to 360Ω (assuming that a light-emitting diode with a working current range of 10 to 50mA is selected).

[0026] The positive and negative pole rapid detection device of the soft-pack sodium ion battery 6 of the utility model works as follows: when the positive and negative poles of the soft-pack sodium ion battery 6 sample to be tested are detected, the first electrical contact 4 and the second electrical contact 5 are respectively in contact with the first pole ear 7 and the second pole ear 8 of the battery. If the light-emitting diode lights up, the first pole ear 7 and the second pole ear 8 are respectively the positive pole and the negative pole; if the light-emitting diode does not light up, the first pole ear 7 and the second pole ear 8 are respectively the negative pole and the positive pole.

[0027] As an alternative technical solution, the diode 1 may be a sound-emitting diode.

[0028] In one embodiment, both the first electrical contact 4 and the second electrical contact 5 are probes.

[0029] In one embodiment, both the first electrical contact 4 and the second electrical contact 5 are metal clips.

[0030] In one embodiment, one of the first electrical contact 4 and the second electrical contact 5 is a metal clip, and the other is a probe.

[0031] It can be seen that the utility model patent has considerable advantages over the currently used technology. The above shows and describes the basic principle, main features and advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description only describe the principles of the utility model. The utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A positive and negative electrode rapid detection device for a soft-pack sodium ion battery, characterized in that: The positive and negative electrode rapid detection device comprises: A diode, the diode comprising a P terminal and an N terminal; an adjustable resistor, the adjustable resistor being connected in series with the P terminal or the N terminal of the diode; and An electrical connector, the electrical connector comprising a first electrical contact and a second electrical contact, the first electrical contact and the second electrical contact being electrically connected to two ends of a circuit in which an adjustable resistor and a diode are connected in series through wires; Among them, when the positive and negative poles of the soft-pack sodium ion battery to be tested are quickly detected, the first electrical contact and the second electrical contact are respectively contacted with the two pole ears of the soft-pack sodium ion battery; if the diode issues a warning, the pole ear close to the P end of the diode is the positive pole, and if the diode does not issue a warning, the pole ear close to the N end of the diode is the positive pole.

2. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1, characterized in that: The reverse breakdown voltage of the diode is higher than the theoretical voltage of the soft-pack sodium ion battery to be tested.

3. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1 or 2, characterized in that: The diode is a light emitting diode.

4. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1 or 2, characterized in that: The diode is a sound-emitting diode.

5. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1, characterized in that: The adjustable resistor is at least one of an electronic component adjustable resistor, a ceramic disc adjustable resistor, a patch adjustable resistor, and a wirewound adjustable resistor.

6. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1, characterized in that: The adjustable resistor has a resistance value adjustment range of 70 to 360Ω.

7. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1, characterized in that: At least one of the first electrical contact and the second electrical contact is a probe.

8. The positive and negative electrode rapid detection device of the soft-pack sodium ion battery according to claim 1, characterized in that: At least one of the first electrical contact and the second electrical contact is a metal clip.

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