阅读说明：本技术 一种锌镍电池的梯级充电方法 (Step charging method of zinc-nickel battery ) 是由 许文 武占耀 冯忠厚 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种锌镍电池的梯级充电方法,包括：S1、采用初始电流,对所述锌镍电池进行恒流充电,以使所述锌镍电池的电压充电至预设电压；S2、当所述锌镍电池的电压充电至预设电压时,在所述初始电流的基础上,降低梯级数据,直至所述初始电流降低至截止电流；S3、采用所述截止电流对所述锌镍电池进行恒流充电；S4、在满足预设条件下,停止对所述锌镍电池进行充电。在本发明中,采用恒流梯级限压的方式对锌镍电池进行充电,不仅简化了对充电机的要求设计,还能够降低充电机的成本；通过采用控制充电电压和截止电流对锌镍电池进行充电,既可以保证锌镍电池的充电量,也可以避免锌镍电池的过充电,延长了锌镍电池的使用寿命。(The invention discloses a step charging method of a zinc-nickel battery, which comprises the following steps: s1, carrying out constant current charging on the zinc-nickel battery by adopting initial current so as to charge the voltage of the zinc-nickel battery to a preset voltage; s2, when the voltage of the zinc-nickel battery is charged to a preset voltage, reducing the step data on the basis of the initial current until the initial current is reduced to a cut-off current; s3, performing constant current charging on the zinc-nickel battery by adopting the cut-off current; and S4, stopping charging the zinc-nickel battery when a preset condition is met. In the invention, the zinc-nickel battery is charged by adopting a constant-current step voltage-limiting mode, so that the design required by the charger is simplified, and the cost of the charger can be reduced; the zinc-nickel battery is charged by controlling the charging voltage and the cut-off current, so that the charging quantity of the zinc-nickel battery can be ensured, the overcharge of the zinc-nickel battery can be avoided, and the service life of the zinc-nickel battery is prolonged.)

1. A step charging method of a zinc-nickel battery is characterized by comprising the following steps:

s1, carrying out constant current charging on the zinc-nickel battery by adopting initial current so as to charge the voltage of the zinc-nickel battery to a preset voltage;

s2, when the voltage of the zinc-nickel battery is charged to a preset voltage, reducing the step data on the basis of the initial current until the initial current is reduced to a cut-off current;

s3, performing constant current charging on the zinc-nickel battery by adopting the cut-off current;

and S4, stopping charging the zinc-nickel battery when a preset condition is met.

2. The step charging method of a zinc-nickel battery as claimed in claim 1, wherein the preset conditions are as follows: and the charging voltage of the zinc-nickel battery reaches the preset voltage.

3. The step charging method of a zinc-nickel battery as claimed in claim 1, wherein the initial current is set to 0.2C-1C.

4. The step charging method for a zinc-nickel battery as claimed in claim 2, wherein the predetermined voltage is set to 1.90V-1.91V.

5. The method of claim 2, wherein the step data is set to 5% -50%.

6. The step charging method for a zinc-nickel battery according to claim 3, wherein the off-current is set to 0.025C to 0.05C.

Technical Field

The invention relates to the technical field of zinc-nickel batteries, in particular to a step charging method of a zinc-nickel battery.

Background

With the improvement of society and the enhancement of environmental awareness, the electric automobile is gradually favored because the vehicle-mounted power supply is used as power, and the problems of environmental pollution caused by the emission of tail gas of a fuel automobile, high energy consumption and the like can be solved. The charging problem of the electric vehicle is a very concern of people, and is related to the popularization and the promotion of the electric vehicle.

In the prior art, a charging method of a zinc-nickel battery is generally carried out by a method of converting a constant current into a constant voltage, however, the method has high requirements on a charger, and has complex circuits and high cost.

Therefore, the problem to be solved by the technical personnel in the field is how to design a step charging method of a zinc-nickel battery.

Disclosure of Invention

The invention provides a gradient charging method for a zinc-nickel battery, which charges the zinc-nickel battery by adopting a constant-current gradient voltage-limiting mode, simplifies the design required by a charger and can reduce the cost of the charger.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the embodiment of the invention provides a gradient charging method of a zinc-nickel battery, which comprises the following steps:

s1, carrying out constant current charging on the zinc-nickel battery by adopting initial current so as to charge the voltage of the zinc-nickel battery to a preset voltage;

s2, when the voltage of the zinc-nickel battery is charged to a preset voltage, reducing the step data on the basis of the initial current until the initial current is reduced to a cut-off current;

s3, performing constant current charging on the zinc-nickel battery by adopting the cut-off current;

and S4, stopping charging the zinc-nickel battery when a preset condition is met.

Optionally, in an embodiment of the present invention, the preset condition is: and the charging voltage of the zinc-nickel battery reaches the preset voltage.

Optionally, in the embodiment of the present invention, the initial current is set to 0.2C to 1C.

Optionally, in an embodiment of the present invention, the preset voltage is set to 1.90V to 1.91V.

Optionally, in an embodiment of the present invention, the step data is set to 5% -50%.

Alternatively, in the embodiment of the present invention, the off-current is set to 0.025C to 0.05C.

The invention has the advantages and positive effects that:

therefore, in the invention, the zinc-nickel battery is charged by adopting a constant-current step voltage-limiting mode, so that the design required by the charger is simplified, and the cost of the charger can be reduced; in addition, the charging voltage and the cut-off current of the zinc-nickel battery are controlled to charge the zinc-nickel battery, so that the charging quantity of the zinc-nickel battery can be ensured, and the overcharge of the zinc-nickel battery can be avoided, thereby being beneficial to prolonging the service life of the zinc-nickel battery.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a flow chart of a step charging method for a zinc-nickel battery provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:

the invention provides a step charging method of a zinc-nickel battery, as shown in figure 1, comprising the following steps:

s1, carrying out constant current charging on the zinc-nickel battery by adopting initial current so as to charge the voltage of the zinc-nickel battery to a preset voltage;

s2, when the voltage of the zinc-nickel battery is charged to a preset voltage, reducing the step data on the basis of the initial current until the initial current is reduced to a cut-off current;

s3, performing constant current charging on the zinc-nickel battery by adopting the cut-off current;

and S4, stopping charging the zinc-nickel battery when a preset condition is met.

Therefore, in the invention, the zinc-nickel battery is charged by adopting a constant-current step voltage-limiting mode, so that the design required by the charger is simplified, and the cost of the charger can be reduced; in addition, the charging voltage and the cut-off current of the zinc-nickel battery are controlled to charge the zinc-nickel battery, so that the charging quantity of the zinc-nickel battery can be ensured, and the overcharge of the zinc-nickel battery can be avoided, thereby being beneficial to prolonging the service life of the zinc-nickel battery.

The calculation of the step data can be specifically shown in tables 1 to 6.

Optionally, in an embodiment of the present invention, the preset condition is: and the charging voltage of the zinc-nickel battery reaches the preset voltage.

It should be noted that, with 25 ℃ as the reference, the temperature compensation coefficient of the preset voltage is-3.5 mv/DEG C for each 1 ℃ change.

Optionally, in the embodiment of the present invention, the initial current is set to 0.2C to 1C.

Optionally, in an embodiment of the present invention, the preset voltage is set to 1.90V to 1.91V.

Optionally, in an embodiment of the present invention, the step data is set to 5% -50%.

Therefore, specific numerical values of the stair data can be selected according to actual conditions, and are not specifically limited, so that the design flexibility is improved, and the requirements of different scenes are met.

Alternatively, in the embodiment of the present invention, the off-current is set to 0.025C to 0.05C.

Therefore, the zinc-nickel battery is charged at the last constant current by adopting the cut-off current, and the full charge of the zinc-nickel battery can be ensured.

The step charging method of a zinc-nickel battery is described in the following embodiments.

To explain a point in advance, the types of the zinc-nickel batteries in the first to seventh embodiments are XNF 120.

The first embodiment is as follows: the step data is the charging experimental data of a 30% zinc-nickel battery, as shown in table 1.

TABLE 1

Example two: the step data is the charging experimental data of the zinc-nickel battery with 20 percent, and is shown in the table 2.

TABLE 2

Example three: the step data is the charging experimental data of a zinc-nickel battery with 10 percent, and is shown in table 3.

TABLE 3

The first embodiment, the second embodiment and the third embodiment are respectively the charging experiment data structures of the zinc-nickel battery with different gradient data.

The accumulated capacitance of the first embodiment is 124.21Ah, and the discharge capacitance is 123.37 Ah;

the cumulative capacitance of the second example is 123.89Ah, and the discharge capacitance is 123.22 Ah;

the cumulative capacitance of example three was 124.9Ah, and the discharge capacitance was 123.7 Ah;

the comparison shows that the corresponding accumulated capacitance of the zinc-nickel battery with different step data is about 124Ah, and the corresponding discharge capacitance is about 123Ah, wherein, the three groups of data have no big difference, thereby showing that the zinc-nickel battery with XNF120 models can be charged by adopting the charging method of the invention.

Example four: the charge experimental data for the zinc-nickel battery with 0.2C initial current is shown in table 4.

TABLE 4

Example five: the charging experimental data of the zinc-nickel battery with the initial current of 0.33C are shown in Table 5.

TABLE 5

Example six: the charging experimental data of the zinc-nickel battery with the initial current of 1C are shown in Table 6.

TABLE 6

The fourth embodiment, the fifth embodiment and the sixth embodiment are respectively the charging experiment data structures of the zinc-nickel batteries with different initial currents.

The cumulative capacitance of the fourth example was 124.24Ah, and the discharge capacitance was 123.33 Ah;

the cumulative capacitance of the fifth example was 123.741Ah, and the discharge capacitance was 122.963 Ah;

the cumulative capacitance of the sixth example was 123.52Ah, and the discharge capacitance was 123.44 Ah;

the comparison shows that the corresponding accumulated capacitance of the zinc-nickel battery with different initial currents is about 124Ah, the corresponding discharge capacitance is about 123Ah, and three groups of data have no great difference, so that the charging method of the invention can charge the zinc-nickel battery with XNF120 models.

Example seven: the initial current is 0.5C, the off current is 0.025C, the preset voltage is 1.91V, and the step data is 30%.

Among them, 0.5C corresponds to 60A, and 0.025C corresponds to 6A, as shown in table 1.

Carrying out constant current charging on the zinc-nickel battery by adopting an initial current 60A, so that the zinc-nickel battery is charged to a preset voltage of 1.91V;

when the zinc-nickel battery reaches the preset voltage of 1.91V, reducing the step data by 30% on the basis of the initial current 60A, specifically, for the initial current 60A, reducing the step data by 30% for the first time by 18A and remaining the step data by 42A, and calculating the step data from the last time until the initial current 60A is reduced to the cut-off current 6A;

constant current charging is carried out on the zinc-nickel battery by adopting a cut-off current 6A;

and when the voltage of the zinc-nickel battery reaches the preset voltage of 1.91V, stopping charging the zinc-nickel battery.

Therefore, in the invention, the zinc-nickel battery is charged by adopting a constant-current step voltage-limiting mode, so that the design required by the charger is simplified, and the cost of the charger can be reduced; in addition, the charging voltage and the cut-off current of the zinc-nickel battery are controlled to charge the zinc-nickel battery, so that the charging quantity of the zinc-nickel battery can be ensured, and the overcharge of the zinc-nickel battery can be avoided, thereby being beneficial to prolonging the service life of the zinc-nickel battery.

It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.