CN204596884U - Acid-base resonance battery device with damping function - Google Patents

Abstract

The utility model discloses an acid-base resonance battery device with damping function, it is by one or more the same battery galvanic pile series/parallelly connected component. Wherein each cell stack comprises an acidic secondary stack group and an alkaline secondary stack group. The acidic secondary electric pile group comprises at least one acidic secondary electric pile; the alkaline secondary pile group comprises at least one alkaline secondary pile, and all the alkaline secondary piles are connected in series. The acidic secondary electric pile group and the alkaline secondary electric pile group are connected in parallel. The potential of the acidic secondary galvanic pile group is close to or equal to that of the alkaline secondary galvanic pile group, and the capacity of the acidic secondary galvanic pile group is close to or equal to that of the alkaline secondary galvanic pile group, so that a damping effect of resonance can be generated between the acidic secondary galvanic pile group and the alkaline secondary galvanic pile group.

Description

Acid-base resonance battery device with damping function

technical field

The utility model relates to an acid-base resonance secondary battery device with a damping function, which is composed of an acidic secondary electric stack group and an alkaline electric stack group in the form of electrical parallel connection.

Background technique

A cell is the basic unit of a battery. Secondary stacks can be divided into acidic batteries and alkaline batteries according to the type of electrolyte. The electrolyte of the acid battery can be an aqueous sulfuric acid solution, such as a lead-acid battery. The lead-acid battery has a large volume, heavy weight, pollution problems, and slow redox reaction, and has been replaced by a lithium iron phosphate battery. The acidic secondary battery stores electric energy in the form of current, and when the current is discharged to zero (I=0), the battery will be damaged.

The electrolyte of the alkaline secondary stack is mainly potassium hydroxide aqueous solution, for example: alkaline zinc-manganese batteries, cadmium-nickel batteries, and nickel-hydrogen batteries. The alkaline secondary stack stores electric energy in a voltage form, and when the voltage is discharged to zero (V=0, generally the voltage is discharged below 1.0V, the battery will fail and cannot be discharged again), the battery will be damaged. The alkaline secondary battery must be charged with a relatively small current, and it often takes more than 24 hours to be fully charged, and the rechargeable times are not many, which is inconvenient to use. The alkaline secondary stack is prone to temperature rise during charging and discharging.

The electrical equipment that uses the secondary stack as the power supply is equipped with a battery management system (Battery Management System, referred to as BMS) to manage the battery. A battery management system (BMS) usually has the function of measuring battery voltage to prevent or avoid abnormal conditions such as battery over-discharge, over-charge, and over-temperature. The power supply in an electrical device is a plurality of secondary stacks connected in parallel, and when the battery management system (BMS) detects that only one of the secondary stacks is insufficient in voltage, the entire battery device will stop supplying power. For consumers, it is impossible to understand why the battery can store electric energy, but it cannot be discharged, and it may cause the load end to go down. The downtime of such load-side equipment sometimes causes danger, for example, it may cause a running electric vehicle to suddenly lose power.

Utility model content

The main purpose of the utility model is to provide an acid-base resonance battery device with a damping function, which can be composed of a plurality of identical battery stacks (cells) connected in series/parallel, wherein each battery stack has a damping effect of self-resonance inside , in order to achieve the purpose of fast charging and fast discharging.

Another object of the present invention is to provide an acid-base resonance battery device with a damping function, which has the function of internal potential automatic balance, thereby eliminating the need for a battery management system (BMS).

The utility model provides an acid-base resonance battery device with a damping function, which is composed of a plurality of identical battery stacks (cells) connected in series/parallel. Each battery stack includes an acidic secondary stack group and an alkaline secondary stack group. The potential balance is automatically achieved through the resonance between the acidic secondary stack group and the alkaline secondary stack group, which is beneficial to charging and discharging.

The acidic secondary stack group includes at least one acidic secondary stack. The alkaline secondary stack group includes at least one alkaline secondary stack, and each alkaline secondary stack is connected in series. The acidic secondary stack group is connected in parallel with the alkaline secondary stack group. The potential of the acidic secondary stack group is close to or equal to the potential of the alkaline secondary stack group, and the capacity of the acidic secondary stack group is close to or equal to the capacity of the alkaline secondary stack group, so that the A resonance damping effect is generated between the acidic secondary stack group and the alkaline secondary stack group.

In an embodiment of the present utility model, the acidic secondary battery stack may be a lithium iron phosphate acidic secondary battery.

In an embodiment of the present invention, the alkaline secondary battery stack may be a zinc-nickel alkaline secondary battery.

Each acidic secondary stack in the acidic secondary stack group can be connected in parallel to increase capacity. Each alkaline secondary stack of the alkaline secondary stack group can be connected in series to increase capacity.

In one embodiment of the present invention, the acidic secondary stack group consists of an acidic secondary stack with a potential of 3.3-3.4V; the alkaline secondary stack group consists of two potentials with a potential of 1.6-1.8V The composition of the alkaline secondary stack; the capacity of the acidic secondary stack is 90% to 110% of the capacity of the alkaline secondary stack.

In one embodiment of the present utility model, the acidic secondary stack group is composed of two acidic secondary stacks with a potential of 3.2 to 3.6V connected in parallel; the alkaline secondary stack group is composed of two potentials with a potential of 1.6V ～1.8V alkaline secondary electric stack; the capacity of the acidic secondary electric stack is 45-55% of the capacity of the alkaline secondary electric stack.

The utility model also provides another acid-base resonance battery device with a damping function, which includes an acidic secondary stack group and an alkaline secondary stack group; the acidic secondary stack group includes at least one acidic secondary stack The secondary stack; the alkaline secondary stack group includes at least one alkaline secondary stack, and each alkaline secondary stack is connected in series; the acidic secondary stack group and the alkaline secondary stack The stack groups are connected in parallel; the potential of the acidic secondary stack group is 90% to 110% of the potential of the alkaline secondary stack group; the capacity of the acidic secondary stack group is the 90% to 110% of the capacity of the stack group; the acidic secondary stack group and the alkaline secondary stack group have a resonance damping effect due to the potential balance relationship.

In one embodiment of the present invention, the acidic secondary stack is a lithium iron phosphate acidic secondary stack battery.

In one embodiment of the present invention, the alkaline secondary stack is a zinc-nickel alkaline secondary stack battery.

In one embodiment of the present invention, the acidic secondary stack group consists of an acidic secondary stack with a potential of 3.2-3.6V; the alkaline secondary stack group consists of two potentials with a potential of 1.6-1.8V The composition of the basic secondary electric pile; the capacity of the acidic secondary electric pile is 90-110% of the capacity of the alkaline secondary electric pile.

In one embodiment of the present invention, the acidic secondary stack group is composed of two acidic secondary stacks with a potential of 3.2 to 3.6V connected in parallel; the alkaline secondary stack group is composed of two potentials with a potential of 1.6V ～1.8V alkaline secondary electric stack; the capacity of the acidic secondary electric stack is 45-55% of the capacity of the alkaline secondary electric stack.

The acid-base resonance battery device with damping function provided by the utility model realizes the following beneficial effects through the resonance damping effect between the acidic secondary stack group and the alkaline secondary stack group:

1. The potential balance between the acidic secondary stack group and the alkaline secondary stack group can be automatically achieved without setting up a battery management system (BMS).

2. The internal resistance between the acidic secondary stack group and the alkaline secondary stack group is low, no temperature rise occurs, and the stability is high.

3. The battery device 10 composed of multiple sets of battery stacks in series/parallel can be used to increase the energy storage voltage and discharge current, and can also form multiple sets of charging and discharging paths to increase the charging and discharging speed.

Description of drawings

Fig. 1 is the structural diagram of the utility model embodiment;

Fig. 2 is a structural diagram of the battery cell stack in the embodiment shown in Fig. 1;

Fig. 3 is a circuit block diagram of charging the embodiment shown in Fig. 1 by the damping charging device;

Fig. 4 is the structural diagram of the second embodiment of the utility model;

FIG. 5 is a structural diagram of the battery cell stack in the embodiment shown in FIG. 4 .

Description of reference signs: 10-battery device; 11-battery stack; 12-acidic secondary stack; 121-acidic secondary stack; 122-acidic secondary stack; 13-alkaline secondary stack ;131-alkaline secondary stack; 132-alkaline secondary stack; 20-charging device; 21-power output device; 22-control circuit; 23-damping inductance; 24-high frequency oscillation switch; 30-electric energy generating means; 40-load.

detailed description

As shown in Figure 1 and Figure 2. The acid-base resonance battery device 10 with damping function provided by the utility model is composed of a plurality of identical battery stacks 11 (cells) connected in series/parallel. Each cell stack 11 includes an acidic secondary stack group 12 and an alkaline secondary stack group 13. The acidic secondary stack group 12 and the alkaline secondary stack group 13 are electrically connected in parallel.

The acidic secondary stack group 12 includes at least one acidic secondary stack 121 . The alkaline secondary stack group 13 includes at least one alkaline secondary stack 131 , and each alkaline secondary stack 131 is connected in series. The acidic secondary stack group 12 and the alkaline secondary stack group 13 are electrically connected in parallel. The potential of the acidic secondary stack group 12 is close to or equal to the potential of the alkaline secondary stack group 13 . The closeness is preferably when the potential of the acidic secondary stack group 12 is 90-110% of the potential of the alkaline secondary stack group 13 . When the potential of the acidic secondary stack group 12 is equal to the potential of the alkaline secondary stack group 13, the best implementation effect can be achieved. Generally, the potential of the acidic secondary stack 121 on the market is about 3.3-3.4V, and the potential of the alkaline secondary stack 131 is about 1.8V. At present, it is not possible to combine the potential of the acidic secondary stack group 12 to be equal to that of the alkaline The battery device 10 of the potential of the secondary stack group 13 .

The materials of the acidic secondary stack 121 and the alkaline secondary stack 131 are different, which results in different energy levels of the two. Wherein, the acidic secondary stack group 12 is good for storing electric energy in current type, and the alkaline secondary stack group 13 is good for storing electric energy in voltage type.

The capacity of the acidic secondary stack group 12 is close to or equal to the capacity of the dibasic secondary stack group 13 . The close degree is preferably when the capacity of the acidic secondary stack is 90-110% of the capacity of the alkaline secondary stack. When the capacity of the acidic secondary stack group 12 is equal to the capacity of the dibasic secondary stack group 13, the best implementation effect can be achieved. However, the actual capacity of the batteries 121 and 131 refers to the work (W) contained in the batteries 121 and 131 . Work (W)=voltage (V)×current (I)×time (T), so it is not easy to make the actual work capacity of the acidic secondary stack group 12 equal to the actual work capacity of the two alkaline secondary stack group 13 .

Because the energy levels of the acidic secondary stack 12 and the alkaline secondary stack 13 are different, and the balance between the acidic secondary stack group 12 and the alkaline secondary stack group 13 must reach a completely equal potential relationship, so that the battery stack 11 is in the process of charging and discharging, the instantaneous voltage imbalance (there is a large voltage difference) caused between the acidic secondary stack group 12 and the alkaline secondary stack group 13, then The alkaline secondary stack group 13 with a relatively high instantaneous potential automatically transmits electric energy to the acidic secondary stack group 12 with a relatively low potential; or, the acidic secondary stack group with a relatively high instantaneous potential 12 Automatically transmit electric energy to the alkaline secondary stack group 13 with a relatively low potential, so that the potentials between the acidic secondary stack group 12 and the alkaline secondary stack group 13 tend to be equal to a complete balance state. This phenomenon of automatic self-internal resonance is called the damping effect. Even when the battery cell stack 11 is not being charged or discharged, there will be a damping effect of self-resonance inside it, so that the potential between the acidic secondary cell stack 12 and the alkaline secondary cell stack 13 tends to be equal to or a nearly equal equilibrium state.

In the embodiment shown in FIG. 1 and FIG. 2 , the acidic secondary stack group 12 is composed of an acidic secondary stack 121 with a potential of 3.3-3.4V. The alkaline secondary stack group 13 is composed of two alkaline secondary stacks 131 connected in series with a potential of 1.6-1.8V. The potential of the acidic secondary stack 121 is 3.3-3.4V, which is close to the total potential of the di-alkaline secondary stack 131 of 3.2-3.6V. Then the potential of the acidic secondary stack group 12 is in the range of 90-110% of the potential of the alkaline secondary stack group 13 . The acidic secondary stack 121 has a capacity of 20Ah. The alkaline secondary stack 131 has a capacity of 20Ah. Then the capacity of the acidic secondary stack group 12 is in the range of 90-110% of the capacity of the alkaline secondary stack group 13 . Then the actual work capacity of the acidic secondary stack group 12 can be close to the actual work capacity of the di-alkaline secondary stack group 13 .

The aforementioned acidic secondary battery stack 121 may be a lithium iron phosphate acidic secondary battery. The alkaline secondary battery stack 131 may be a zinc-nickel alkaline secondary battery.

The aforementioned acid-base resonance battery device with damping function must be charged with a charging device with damping function, such as the authorized new No. M484854 "damping charging device". As shown in Figure 3. The charging device 20 includes a power output device 21 , a control circuit 22 , a damping inductor 23 and a high frequency oscillation switch 24 . The power output device 21 can be connected with an electric energy generating device 30 , which mainly boosts or reduces the voltage output by the electric energy generating device 30 to output power. The positive end of the acid-base resonance battery device is connected to the damping inductance 23, and the negative end is connected to the high-frequency oscillation switch 24. The electric energy generating device 30 may be a regenerative energy generating device, or a household power supply. The charging device 20 enables the damping inductor 23 to store and discharge electricity at a high frequency through the high frequency oscillation switch 24 . When the high frequency oscillation switch 24 is ON, the damping inductor 23 will store electric energy. When the high-frequency oscillation switch 24 is in the OFF state, the damping inductor 23 will release the stored electric energy to charge the acid-base resonance battery device. Therefore, the electric energy that can be released by the charging device 20 is electric energy with a frequency response to charge the battery device 10 . The battery device 10 can be discharged to provide work for the load 40 .

The voltage balance between the acidic secondary stack group 12 and the alkaline secondary stack group 13 is achieved in an instantaneous and rapid resonance mode, which is a damping effect. Since each battery stack 11 in the battery device 10 will generate self-resonance during charging and discharging, it will not cause temperature rise, and the service life of the battery device 10 can be improved. Since the potential between the acidic secondary stack group 12 and the alkaline secondary stack group 13 will automatically tend to be equal to or close to the equal equilibrium state, so there is no need to use a battery management system (BMS), and there is no need to install The battery management system (BMS) circuit board can reduce the production cost of electrical appliances and reduce the weight of the body.

Because each battery stack 11 of the battery device 10 has the damping characteristic of self-resonance, the more battery stacks 11 that constitute the battery device, the more paths for charging and discharging, and the charging and discharging process can be made more efficient. Speed up.

Shown in Fig. 4, Fig. 5 is another embodiment of the present utility model. The acidic secondary stack group 12 of each battery stack 11 in the battery device 10 is composed of two acidic secondary stacks 122 connected in parallel with a potential of 3.2-3.6V. The alkaline secondary stack group 13 is composed of two alkaline secondary stacks 132 with a potential of 1.6-1.8V. The potential of the acidic secondary stack group 12 is within the range of 90-110% of the potential of the alkaline secondary stack group 13 . The capacity of the acidic secondary stack 122 is 1250mAh, which is 1/2 of the capacity of the alkaline battery 132, 2500mAh. %In the range. The capacity of the acidic secondary stack group 12 is 1250mAh×2=2500mAh, which is within the range of 90-110% of the capacity of the alkaline secondary stack group 13 . Therefore, two acidic secondary stacks 122 can be connected in parallel to increase the capacity of the acidic secondary stack group 12 to be close to the capacity of the alkaline secondary stack group 13.

In summary, the acid-base resonance battery device with damping function provided by the utility model realizes the following beneficial effects through the resonance damping effect between the acidic secondary stack group and the alkaline secondary stack group:

1. The potential balance between the acidic secondary stack group and the alkaline secondary stack group can be automatically achieved without setting up a battery management system (BMS).

2. The internal resistance between the acidic secondary stack group and the alkaline secondary stack group is low, no temperature rise occurs, and the stability is high.

3. The battery device 10 composed of multiple sets of battery stacks in series/parallel can be used to increase the energy storage voltage and discharge current, and can also form multiple sets of charging and discharging paths to increase the charging and discharging speed.

The above description is to use the preferred embodiments to describe the utility model in detail, but not to limit the scope of the utility model. Generally, those who are familiar with this type of art can understand that it is appropriate to make slight changes and adjustments without losing the gist of the present utility model, nor departing from the spirit and scope of the present utility model.

Claims (10)

1. An acid-base resonance battery device with a damping function is composed of a plurality of identical battery electric piles in series/parallel connection; wherein each cell stack comprises an acidic secondary stack group and an alkaline secondary stack group; the acidic secondary electric pile group comprises at least one acidic secondary electric pile; the alkaline secondary electric pile group comprises at least one alkaline secondary electric pile, and all the alkaline secondary electric piles are connected in series; the acidic secondary electric pile group and the alkaline secondary electric pile group are connected in parallel; the potential of the acidic secondary galvanic pile group is 90-110% of the potential of the alkaline secondary galvanic pile group; the capacity of the acidic secondary electric pile group is 90-110% of the capacity of the alkaline secondary electric pile group; the acidic secondary galvanic pile group and the alkaline secondary galvanic pile group generate resonance damping action due to the potential balance relationship.

2. The acid-base resonance battery device with the damping function according to claim 1, wherein the acid secondary stack is a lithium iron phosphate acid secondary stack battery.

3. The acid-base resonance battery device with a damping function according to claim 1, wherein the alkaline secondary stack is a zinc-nickel alkaline secondary stack battery.

4. The acid-base resonance battery device with the damping function as claimed in claim 1, wherein the acidic secondary stack group consists of an acidic secondary stack with a potential of 3.3-3.4V; the alkaline secondary galvanic pile group consists of two alkaline secondary galvanic piles with the potential of 1.6-1.8V; the capacity of the acidic secondary electric pile is 90-110% of the capacity of the alkaline secondary electric pile.

5. The acid-base resonance battery device with the damping function as claimed in claim 1, wherein the acidic secondary galvanic pile group is composed of two acidic secondary galvanic piles with the electric potential of 3.2-3.6V connected in parallel; the alkaline secondary galvanic pile group consists of two alkaline secondary galvanic piles with the potential of 1.6-1.8V; the capacity of the acidic secondary stack is 45-55% of the capacity of the alkaline secondary stack.

6. An acid-base resonance battery device with a damping function is characterized by comprising an acid secondary electric pile group and an alkaline secondary electric pile group; the acidic secondary electric pile group comprises at least one acidic secondary electric pile; the alkaline secondary electric pile group comprises at least one alkaline secondary electric pile, and all the alkaline secondary electric piles are connected in series; the acidic secondary electric pile group and the alkaline secondary electric pile group are connected in parallel; the potential of the acidic secondary galvanic pile group is 90-110% of the potential of the alkaline secondary galvanic pile group; the capacity of the acidic secondary galvanic pile group is 90-110% of the capacity of the alkaline secondary galvanic pile group; the acidic secondary galvanic pile group and the alkaline secondary galvanic pile group generate resonance damping effect due to the potential balance relationship.

7. The acid-base resonance battery device with the damping function according to claim 6, wherein the acid secondary stack is a lithium iron phosphate acid secondary stack battery.

8. The acid-base resonance battery device with a damping function according to claim 6, wherein the alkaline secondary stack is a zinc-nickel alkaline secondary stack battery.

9. The acid-base resonance battery device with the damping function as claimed in claim 6, wherein the acidic secondary electric pile group consists of an acidic secondary electric pile with the electric potential of 3.2-3.6V; the alkaline secondary galvanic pile group consists of two alkaline secondary galvanic piles with the electric potential of 1.6-1.8V; the capacity of the acidic secondary electric pile is 90-110% of the capacity of the alkaline secondary electric pile.

10. The acid-base resonance battery device with the damping function as claimed in claim 6, wherein the acidic secondary galvanic pile group is composed of two acidic secondary galvanic piles with the electric potential of 3.2-3.6V connected in parallel; the alkaline secondary galvanic pile group consists of two alkaline secondary galvanic piles with the electric potential of 1.6-1.8V; the capacity of the acidic secondary stack is 45-55% of the capacity of the alkaline secondary stack.