CN108054449B - Nickel-hydrogen battery activation device and rapid activation method thereof - Google Patents
Nickel-hydrogen battery activation device and rapid activation method thereof Download PDFInfo
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- CN108054449B CN108054449B CN201711488919.XA CN201711488919A CN108054449B CN 108054449 B CN108054449 B CN 108054449B CN 201711488919 A CN201711488919 A CN 201711488919A CN 108054449 B CN108054449 B CN 108054449B
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 82
- 239000001257 hydrogen Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000004913 activation Effects 0.000 title claims abstract description 41
- 229910052987 metal hydride Inorganic materials 0.000 claims abstract description 104
- 238000007600 charging Methods 0.000 claims abstract description 99
- 238000007599 discharging Methods 0.000 claims abstract description 76
- 238000001994 activation Methods 0.000 claims abstract description 58
- 230000008569 process Effects 0.000 claims abstract description 32
- 208000028659 discharge Diseases 0.000 claims description 53
- 238000012544 monitoring process Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 1
- -1 nickel metal hydride Chemical class 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000009529 body temperature measurement Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010277 constant-current charging Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4242—Regeneration of electrolyte or reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a nickel-hydrogen battery activation device and a quick activation method thereof, wherein the nickel-hydrogen battery activation device controls the whole activation process of a nickel-hydrogen battery by a control module, and a discharge module discharges the nickel-hydrogen battery; the charging module charges the nickel-hydrogen battery; the temperature measuring module monitors the temperature of the nickel-hydrogen battery in the activation process and feeds back the temperature value of the nickel-hydrogen battery to the control module; the voltage control module controls the voltage of the nickel-metal hydride battery in the activation process; the current control module controls the current of the nickel-hydrogen battery in the activation process. The invention controls the voltage control module and the current control module through the control module, so that the charging and discharging processes of the nickel-metal hydride battery can be rapidly and safely carried out, the battery damage caused by overcharge or overdischarge is avoided, the capacity of the new nickel-metal hydride battery is activated and the internal resistance of the old nickel-metal hydride battery is deactivated through the activation process, and the normal use of the nickel-metal hydride battery is ensured.
Description
Technical Field
The invention relates to a battery activating device, in particular to a nickel-hydrogen battery activating device and a rapid activating method thereof.
Background
With the rapid development of electronic products, portable electronic mobile devices are widely used. Along with popularization of electronic mobile equipment, the nickel-hydrogen battery which has low environmental pollution and can be recycled for multiple times is also increasingly demanded; in addition to the increasing demands on the capacity of nickel-metal hydride batteries, higher demands are also being placed on the service life of nickel-metal hydride batteries. However, in the prior art, the nickel-hydrogen battery manufactured by using nickel hydroxide as the positive electrode material and potassium hydroxide as the electrolyte component has excessive internal resistance in the use process, low discharge voltage causes low electric quantity of the nickel-hydrogen battery and cannot be used, or the charging voltage is too high to charge, so that the number of times of recycling is obviously reduced and limited, and therefore, the nickel-hydrogen battery needs to be subjected to activation treatment to solve the problems, but not all the nickel-hydrogen batteries can be subjected to activation treatment.
Disclosure of Invention
In order to solve the above-mentioned shortcomings of the prior art, the present invention is directed to a nickel-hydrogen battery activation device and a rapid activation method thereof, so as to overcome the shortcomings of the prior art.
In order to achieve the above object, the present invention provides a nickel-hydrogen battery activation device, which includes a discharging module, a charging module, a temperature measuring module, a voltage control module, a current control module, a control module, and a nickel-hydrogen battery to be activated; the discharging module is connected with the voltage control module, the current control module, the control module and the nickel-hydrogen battery to be activated and is used for discharging the nickel-hydrogen battery to be activated according to the command of the control module; the charging module is connected with the voltage control module, the current control module, the control module and the nickel-hydrogen battery to be activated and is used for charging the nickel-hydrogen battery to be activated according to the command of the control module; the temperature measuring module is connected with the control module and the nickel-hydrogen battery to be activated, and is used for monitoring the temperature of the nickel-hydrogen battery in the activation process and feeding back the temperature value of the nickel-hydrogen battery to the control module; the voltage control module is connected with the discharging module, the charging module, the control module and the nickel-hydrogen battery to be activated, and is used for monitoring the voltage change of the nickel-hydrogen battery in the activation process and controlling the voltage of the discharging module in the charging process according to the command of the control module; the current control module is connected with the discharging module, the charging module, the control module and the nickel-hydrogen battery to be activated, and is used for monitoring the current change of the nickel-hydrogen battery in the activation process and controlling the current of the discharging module in the discharging process and the current of the charging module in the charging process according to the command of the control module; the control module is connected with the discharging module, the charging module, the temperature measuring module, the voltage control module, the current control module and the nickel-hydrogen battery to be activated and is used for controlling the whole activation process of the nickel-hydrogen battery.
As a further explanation of the nickel-hydrogen battery activation device according to the present invention, preferably, the control module controls the discharge module to discharge the nickel-hydrogen battery according to the state of the nickel-hydrogen battery to be activated; meanwhile, the control module controls the current control module to monitor the current passing through the nickel-metal hydride battery so as to adjust the discharge current in the discharge module; the control module controls the voltage control module to monitor the voltage at two ends of the nickel-metal hydride battery so as to prevent overdischarge.
As a further explanation of the nickel-hydrogen battery activation device according to the present invention, preferably, the control module controls the charging module to charge the nickel-hydrogen battery according to the state of the nickel-hydrogen battery to be activated; meanwhile, the control module controls the current control module to monitor the current passing through the nickel-metal hydride battery so as to adjust the charging current in the charging module; the control module controls the voltage control module to monitor the voltage across the nickel-metal hydride battery to prevent overcharging.
As a further explanation of the nickel-metal hydride battery activation device according to the present invention, preferably, the temperature measurement module monitors the temperature of the nickel-metal hydride battery during the charging process and feeds back to the control module, so that the control module controls the charging module to stop charging the nickel-metal hydride battery.
As a further explanation of the nickel-metal hydride battery activation device according to the present invention, it is preferable that the voltage controlled by the voltage control module is in a range of 1 to 1.35V.
The invention also provides a rapid activation method using the nickel-metal hydride battery activation device, which comprises the following steps:
step 1): detecting the state of the nickel-hydrogen battery;
the control module detects the state of the nickel-metal hydride battery and selects charging or discharging according to the state of the nickel-metal hydride battery; for a new nickel-metal hydride battery, discharging and recharging are performed when the battery charge quantity is more than 40%, and charging and discharging are performed when the battery charge quantity is less than 40%; carrying out heavy current discharge on the old nickel-hydrogen battery;
step 2): charging and discharging of the new nickel-metal hydride battery;
step 2-1): performing discharge treatment;
the control module controls the discharge module and the current control module to discharge the new nickel-hydrogen battery with 0.2C discharge current, and when the voltage control module detects that the voltage is 1V, the discharge is stopped;
step 2-2): charging treatment;
the control module controls the charging module and the current control module to charge the new nickel-hydrogen battery with the charging current of 0.1C, and when the voltage control module detects that the voltage is 1.35V, the charging is stopped;
step 2-3): repeating steps 2-1) and 2-2) for 2-4 times until the battery capacity approaches the rated capacity; or,
step 3): high-current discharge of the old nickel-metal hydride battery;
step 3-1): performing discharge treatment;
the control module controls the discharging module and the current control module to discharge the old nickel-metal hydride battery at 5C;
step 3-2): standing;
when the temperature measuring module detects that the temperature of the discharged old nickel-metal hydride battery reaches 40 ℃, the control module controls the discharging module to stop charging, and the discharging process is carried out again after the temperature is recovered to be normal;
step 3-3): repeating the step 3-1) and the step 3-2) until the voltage control module detects that the voltage of the old nickel-metal hydride battery is reduced to be 1V, and stopping the discharging process.
As a further explanation of the rapid activation method according to the present invention, it is preferable that the discharge treatment of step 2-1) is to discharge to 1.2V at a current of 0.2C, and then to discharge to 1.0V at a current of 0.5C, and the rest is performed for half an hour; and finally, discharging the current with the multiplying power of 0.2C for 8-10 hours.
As a further explanation of the rapid activation method according to the present invention, it is preferable that the charging treatment of step 2-2) is a first charging to 1.35V at a current of 0.1C, and the charging treatment is a second charging to 1.2-1.35V at a current of 0.1C.
The invention controls the voltage control module and the current control module through the control module, so that the charging and discharging processes of the nickel-metal hydride battery can be rapidly and safely carried out, the battery damage caused by overcharge or overdischarge is avoided, the capacity of the new nickel-metal hydride battery is activated and the internal resistance of the old nickel-metal hydride battery is deactivated through the activation process, and the normal use of the nickel-metal hydride battery is ensured.
Drawings
FIG. 1 is a schematic view of a nickel-metal hydride battery activation device according to the present invention;
FIG. 2 is a block diagram showing the discharging process of the nickel-metal hydride battery activation device of the present invention;
fig. 3 is a block diagram showing the structure of a charging process of the nickel-metal hydride battery activation device of the present invention;
fig. 4 is a block diagram showing the structure of the temperature control process of the nickel-metal hydride battery activation device of the present invention.
Detailed Description
For a further understanding of the structure, features, and other objects of the invention, reference should now be made in detail to the accompanying drawings of the preferred embodiments of the invention, which are illustrated in the accompanying drawings and are for purposes of illustrating the concepts of the invention and not for limiting the invention.
As shown in fig. 1, fig. 1 is a schematic structural view of a nickel-metal hydride battery activation device according to the present invention; the nickel-metal hydride battery activation device comprises a discharging module 1, a charging module 2, a temperature measuring module 3, a voltage control module 4, a current control module 5, a control module 6 and a nickel-metal hydride battery to be activated; the discharging module 1 is connected with the voltage control module 4, the current control module 5, the control module 6 and the nickel-hydrogen battery to be activated, and is used for discharging the nickel-hydrogen battery to be activated according to the command of the control module 6; the charging module 2 is connected with the voltage control module 4, the current control module 5, the control module 6 and the nickel-hydrogen battery to be activated, and is used for charging the nickel-hydrogen battery to be activated according to the command of the control module 6; the temperature measuring module 3 is connected with the control module 6 and the nickel-hydrogen battery to be activated, and is used for monitoring the temperature of the nickel-hydrogen battery in the activation process, feeding back the temperature value of the nickel-hydrogen battery to the control module 6, and then carrying out cooling treatment on the nickel-hydrogen battery under the condition of not damaging the battery according to the command of the control module 6; the voltage control module 4 is connected with the discharging module 1, the charging module 2, the control module 6 and the nickel-metal hydride battery to be activated, and is used for monitoring the voltage change of the nickel-metal hydride battery in the activation process and controlling the voltage of the discharging module 1 in the charging process according to the command of the control module 6; preferably, the voltage range controlled by the voltage control module 4 is 1-1.35V; the current control module 5 is connected with the discharging module 1, the charging module 2, the control module 6 and the nickel-metal hydride battery to be activated, and is used for monitoring the current change of the nickel-metal hydride battery in the activation process and controlling the current of the discharging module 1 in the discharging process and the current of the charging module 2 in the charging process according to the command of the control module 6; the control module 6 is connected with the discharging module 1, the charging module 2, the temperature measuring module 3, the voltage control module 4, the current control module 5 and the nickel-hydrogen battery to be activated, and is used for controlling the whole activation process of the nickel-hydrogen battery.
Referring to fig. 2, fig. 2 is a block diagram showing a discharging process of the nickel-metal hydride battery activation device according to the present invention;
the control module 6 sends a discharging signal or a discharging stopping signal to the discharging module 1, the discharging module 1 receives the discharging signal or the discharging stopping signal and discharges or stops discharging operation on the nickel-metal hydride battery, wherein the control module 6 controls the discharging module 1 to discharge or stop discharging the nickel-metal hydride battery according to the state of the nickel-metal hydride battery to be activated; during discharging, the control module 6 sends a constant-current discharging signal to the current control module 5, the current control module 5 receives the constant-current discharging signal and controls and monitors the nickel-metal hydride battery, and the control module 6 controls the current control module 5 to discharge the nickel-metal hydride battery with constant current and monitors the discharging current of the nickel-metal hydride battery so as to adjust the discharging current in the discharging module 1 and avoid overlarge current fluctuation; the control module 6 sends a monitoring voltage signal to the voltage control module 4, the voltage control module 4 receives the monitoring voltage signal and controls and monitors the nickel-metal hydride battery, and the control module 6 controls the voltage control module 4 to monitor the voltage at two ends of the nickel-metal hydride battery so as to prevent overdischarge.
Referring to fig. 3, fig. 3 is a block diagram showing a charging process of the nickel-metal hydride battery activation device according to the present invention; the control module 6 sends a charging signal or a charging stopping signal to the charging module 2, the charging module 2 receives the charging signal or the charging stopping signal and charges or stops charging the nickel-metal hydride battery, wherein the control module 6 controls the charging module 2 to charge or stop charging the nickel-metal hydride battery according to the state of the nickel-metal hydride battery to be activated; during charging, the control module 6 sends a constant current charging signal to the current control module 5, the current control module 5 receives the constant current charging signal and controls and monitors the nickel-metal hydride battery, the control module 6 controls the current control module 5 to charge the nickel-metal hydride battery with constant current and monitors the charging current passing through the nickel-metal hydride battery, and if the actual current value is different from a set value by more than 10%, the duty ratio is adjusted, so that the charging current can be maintained near the set value to adjust the charging current in the charging module 2, and overlarge current fluctuation is avoided; the control module 6 sends a monitoring voltage signal to the voltage control module 4, the voltage control module 4 receives the monitoring voltage signal and controls and monitors the nickel-metal hydride battery, and the control module 6 controls the voltage control module 4 to monitor the voltage at two ends of the nickel-metal hydride battery so as to prevent overcharge; in addition, the control module 6 sends a temperature monitoring signal to the temperature measuring module 3, and the temperature measuring module 3 receives the temperature monitoring signal, so that the control module 6 controls the temperature measuring module 3 to monitor the temperature of the nickel-metal hydride battery, and when the temperature of the battery exceeds 55 ℃ or the temperature rise of 0.5 ℃/min occurs, the charging is stopped.
Referring to fig. 4, fig. 4 is a block diagram showing a temperature control process of the nickel-metal hydride battery activation device according to the present invention; the control module 6 sends a heating signal or a cooling signal to the temperature measurement module 3, and the temperature measurement module 3 receives the heating signal or the cooling signal, so that the control module 6 can control the temperature measurement module 3 to heat or cool the nickel-metal hydride battery, thereby accelerating the activity of the electrolyte and avoiding further damage of the battery caused by overhigh temperature; in the charging process, the control module 6 sends a temperature monitoring signal to the temperature measuring module 3, and the temperature measuring module 3 receives the temperature monitoring signal, so that the temperature measuring module 3 monitors the temperature of the nickel-metal hydride battery and feeds back the temperature to the control module 6, and when the temperature is too high, the charging of the nickel-metal hydride battery is stopped in time, and the liquid leakage phenomenon and damage caused by the too high temperature of the nickel-metal hydride battery are avoided.
The invention also provides a rapid activation method using the nickel-metal hydride battery activation device, which comprises the following steps:
step 1): detecting the state of the nickel-hydrogen battery;
the control module 6 detects the state of the nickel-metal hydride battery and selects charging or discharging according to the state of the nickel-metal hydride battery; because the activation of the nickel-hydrogen battery comprises the capacity activation of the new battery and the internal resistance deactivation of the old battery, different activation methods are adopted for the new nickel-hydrogen battery and the old nickel-hydrogen battery, wherein when the charge quantity of the new nickel-hydrogen battery is more than 40%, the new nickel-hydrogen battery is firstly discharged and then charged and then discharged, and when the charge quantity of the new nickel-hydrogen battery is less than 40%; and carrying out high-current discharge on the old nickel-metal hydride battery.
Step 2): charging and discharging of the new nickel-metal hydride battery;
step 2-1): performing discharge treatment;
the control module 6 controls the discharge module 1 and the current control module 5 to perform discharge treatment on the new nickel-metal hydride battery at a discharge current of 0.2C, and when the voltage control module 4 detects that the voltage is 1V, the discharge is stopped. Preferably, the discharge treatment is to discharge to 1.2V at a current of 0.2C and then to discharge to 1.0V at a current of 0.5C, and to rest for half an hour; and finally, discharging the current with the multiplying power of 0.2C for 8-10 hours. In the discharging process, the nickel-metal hydride batteries also slowly emit heat, when the temperature measuring module 3 detects that the temperature of the nickel-metal hydride batteries is 55 ℃, the control module 6 automatically controls the discharging module 1 to stop discharging, after the temperature of the nickel-metal hydride batteries is recovered to be normal, the control module 6 starts the discharging module 1 to discharge again, the discharging process is completed until the voltage of each nickel-metal hydride battery is reduced to 1.0V, and then the nickel-metal hydride batteries are charged.
Step 2-2): charging treatment;
the control module 6 controls the charging module 2 and the current control module 5 to charge the new nickel-metal hydride battery with a charging current of 0.1C, and stops charging when the voltage control module 4 detects that the voltage is 1.35V. Preferably, the charging process is a first charging process to 1.35V at a current of 0.1C, and the charging process is a second charging process to 1.2 to 1.35V at a current of 0.1C.
Step 2-3): repeating the steps 2-1) and 2-2) for 2-4 times until the battery capacity approaches the rated capacity.
Step 3): high-current discharge of the old nickel-metal hydride battery;
step 3-1): performing discharge treatment;
the control module 6 controls the discharge module 1 and the current control module 5 to perform discharge treatment on the old nickel-metal hydride battery at 5C.
Step 3-2): standing;
when the temperature measuring module 3 detects that the temperature of the discharged old nickel-metal hydride battery reaches 40 ℃, the control module 6 controls the discharging module 1 to stop charging, and waits for the temperature to recover to be normal and discharge again;
step 3-3): repeating the steps 3-1) and 3-2) until the voltage control module 4 detects that the voltage of the old nickel-metal hydride battery is reduced to 1V, and stopping the discharging process.
In summary, the voltage control module and the current control module are controlled by the control module, so that the charging and discharging processes of the nickel-metal hydride battery can be rapidly and safely performed, the battery damage caused by overcharge or overdischarge is avoided, the capacity of the new nickel-metal hydride battery is activated, the internal resistance of the old nickel-metal hydride battery is deactivated in the activation process, and the normal use of the nickel-metal hydride battery is ensured; the temperature measuring module is used for monitoring the temperature of the nickel-hydrogen battery, so that the phenomenon of liquid leakage caused by overhigh temperature of the nickel-hydrogen battery is avoided; the control module controls the discharging module and the charging module to discharge and charge the nickel-metal hydride battery, monitors the state of the nickel-metal hydride battery, adjusts the current passing through the nickel-metal hydride battery in real time, and ensures constant-current constant-voltage charging and constant-current discharging.
It should be noted that the foregoing summary and the detailed description are intended to demonstrate practical applications of the technical solution provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent alterations, or improvements will occur to those skilled in the art, and are within the spirit and principles of the invention. The scope of the invention is defined by the appended claims.
Claims (5)
1. The nickel-hydrogen battery activation device is characterized by comprising a discharging module (1), a charging module (2), a temperature measuring module (3), a voltage control module (4), a current control module (5), a control module (6) and a nickel-hydrogen battery to be activated; wherein,,
the discharging module (1) is connected with the voltage control module (4), the current control module (5), the control module (6) and the nickel-hydrogen battery to be activated and is used for discharging the nickel-hydrogen battery to be activated according to the command of the control module (6);
the charging module (2) is connected with the voltage control module (4), the current control module (5), the control module (6) and the nickel-hydrogen battery to be activated and is used for charging the nickel-hydrogen battery to be activated according to the command of the control module (6);
the temperature measuring module (3) is connected with the control module (6) and the nickel-hydrogen battery to be activated, and is used for monitoring the temperature of the nickel-hydrogen battery in the activation process and feeding back the temperature value of the nickel-hydrogen battery to the control module (6);
the voltage control module (4) is connected with the discharging module (1), the charging module (2), the control module (6) and the nickel-hydrogen battery to be activated, and is used for monitoring the voltage change of the nickel-hydrogen battery in the activation process and controlling the voltage of the discharging module (1) in the charging process according to the command of the control module (6);
the current control module (5) is connected with the discharging module (1), the charging module (2), the control module (6) and the nickel-hydrogen battery to be activated, and is used for monitoring the current change of the nickel-hydrogen battery in the activation process and controlling the current of the discharging module (1) in the discharging process and the current of the charging module (2) in the charging process according to the command of the control module (6);
the control module (6) is connected with the discharging module (1), the charging module (2), the temperature measuring module (3), the voltage control module (4), the current control module (5) and the nickel-hydrogen battery to be activated and is used for controlling the whole activation process of the nickel-hydrogen battery;
the control module (6) controls the discharge module (1) to discharge the nickel-hydrogen battery according to the state of the nickel-hydrogen battery to be activated; meanwhile, the control module (6) controls the current control module (5) to monitor the current passing through the nickel-metal hydride battery so as to adjust the discharge current in the discharge module (1); the control module (6) controls the voltage control module (4) to monitor the voltage at two ends of the nickel-metal hydride battery so as to prevent overdischarge;
the control module (6) controls the charging module (2) to charge the nickel-hydrogen battery according to the state of the nickel-hydrogen battery to be activated; meanwhile, the control module (6) controls the current control module (5) to monitor the current passing through the nickel-metal hydride battery so as to adjust the charging current in the charging module (2); the control module (6) controls the voltage control module (4) to monitor the voltage at two ends of the nickel-metal hydride battery so as to prevent overcharge;
the temperature measuring module (3) monitors the temperature of the nickel-metal hydride battery in the charging process and feeds the temperature back to the control module (6), and then the control module (6) controls the charging module (2) to stop charging the nickel-metal hydride battery.
2. The nickel-metal hydride battery activation device of claim 1, wherein the voltage controlled by the voltage control module (4) ranges from 1V to 1.35V.
3. A rapid activation method using the nickel metal hydride battery activation device of any of claims 1-2, the rapid activation method comprising the steps of:
step 1): detecting the state of the nickel-hydrogen battery;
the control module (6) detects the state of the nickel-metal hydride battery and selects charging or discharging according to the state of the nickel-metal hydride battery; for a new nickel-metal hydride battery, discharging and recharging are performed when the battery charge quantity is more than 40%, and charging and discharging are performed when the battery charge quantity is less than 40%; carrying out heavy current discharge on the old nickel-hydrogen battery;
step 2): charging and discharging of the new nickel-metal hydride battery;
step 2-1): performing discharge treatment;
the control module (6) controls the discharge module (1) and the current control module (5) to discharge the new nickel-metal hydride battery with a discharge current of 0.2C, and when the voltage control module (4) detects that the voltage is 1V, the discharge is stopped;
step 2-2): charging treatment;
the control module (6) controls the charging module (2) and the current control module (5) to charge the new nickel-metal hydride battery with a charging current of 0.1C, and when the voltage control module (4) detects that the voltage is 1.35V, the charging is stopped;
step 2-3): repeating steps 2-1) and 2-2) for 2-4 times until the battery capacity approaches the rated capacity; or,
step 3): high-current discharge of the old nickel-metal hydride battery;
step 3-1): performing discharge treatment;
the control module (6) controls the discharge module (1) and the current control module (5) to discharge the old nickel-metal hydride battery at 5C;
step 3-2): standing;
when the temperature measuring module (3) detects that the temperature of the discharged old nickel-metal hydride battery reaches 40 ℃, the control module (6) controls the discharging module (1) to stop charging, and the discharging treatment is carried out again after the temperature is recovered to be normal;
step 3-3): repeating the step 3-1) and the step 3-2) until the voltage control module (4) detects that the voltage of the old nickel-metal hydride battery is reduced to be 1V, and stopping the discharging process.
4. The rapid activation method according to claim 3, wherein the discharge treatment of step 2-1) is to discharge at a current of 0.2C to 1.2V, and then to discharge at a current of 0.5C to 1.0V, and the reaction is stopped for half an hour; and finally, discharging the current with the multiplying power of 0.2C for 8-10 hours.
5. The rapid activation method according to claim 3, wherein the charging treatment of step 2-2) is a first charging to 1.35V at a current of 0.1C, and the charging treatment is a second charging to 1.2 to 1.35V at a current of 0.1C.
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| CN201711488919.XA CN108054449B (en) | 2017-12-29 | 2017-12-29 | Nickel-hydrogen battery activation device and rapid activation method thereof |
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