CN112821511A - Self-adaptive charging circuit, charging method and charger for lead-acid battery voltage - Google Patents
Self-adaptive charging circuit, charging method and charger for lead-acid battery voltage Download PDFInfo
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- CN112821511A CN112821511A CN202110166836.9A CN202110166836A CN112821511A CN 112821511 A CN112821511 A CN 112821511A CN 202110166836 A CN202110166836 A CN 202110166836A CN 112821511 A CN112821511 A CN 112821511A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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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
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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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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- 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)
Abstract
The invention relates to the technical field of lead-acid battery charging, and discloses a voltage self-adaptive charging circuit, a charging method and a charger for a lead-acid battery, wherein the charging circuit comprises a control board, an amplifying circuit connected with the control board, a conduction control circuit and a charging voltage generating circuit; the control panel is provided with an output end of a pulse control signal, the pulse control signal is connected to the negative electrode of the lead-acid battery to be charged through an amplifying circuit and a conduction control circuit which are sequentially connected, the conduction control circuit is used for intermittently outputting the amplified pulse control signal, the pulse control signal is used for repairing the lead-acid battery to be charged with the vulcanization condition, and the control panel controls the charging voltage generation circuit to adjust the output charging voltage according to the feedback voltage. The invention firstly charges by pulse current, recovers the activity of the lead-acid battery and the normal battery voltage, repairs the partially vulcanized lead-acid battery, can accurately detect the battery voltage, provides more matched charging voltage to finish charging, and prolongs the service life of the lead-acid battery.
Description
Technical Field
The invention relates to the technical field of lead-acid battery charging, in particular to a voltage self-adaptive charging circuit, a charging method and a charger for a lead-acid battery.
Background
Lead acid batteries (VRLA), which are storage batteries with electrodes mainly made of lead and oxides thereof and electrolyte as sulfuric acid solution, are widely used in many fields such as automobiles, communications, electric vehicles, mobile audio devices, and the like. At present, the vulcanization phenomenon of the lead-acid battery is an important reason for reducing the capacity of the battery and shortening the service life.
In the prior art, a lead-acid battery voltage adaptive charger needs to adapt to battery voltage for charging, and most of the lead-acid battery voltage adaptive charger detects the battery voltage and then automatically adjusts the battery voltage to adapt to the voltage for charging. Because the voltage is detected first, incorrect voltage detection may occur for lead-acid batteries that have been vulcanized, resulting in charging failures.
Disclosure of Invention
The technical purpose is as follows: aiming at the technical problem, the invention discloses a self-adaptive charging circuit, a charging method and a charger for the voltage of a lead-acid battery, which can accurately detect the voltage of the battery so as to provide a more matched charging voltage to finish charging.
The technical scheme is as follows: in order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a lead acid battery voltage self-adaptation charging circuit which characterized in that: the device comprises a control panel, an amplifying circuit connected with the control panel, a conduction control circuit and a charging voltage generating circuit; the output end of the charging voltage generating circuit is connected with the anode of the lead-acid battery to be charged and is used for providing adaptive charging voltage under the control of the control panel; the control panel is provided with an output end of a pulse control signal, the pulse control signal is connected to the negative electrode of the lead-acid battery to be charged through an amplifying circuit and a conduction control circuit which are sequentially connected, the conduction control circuit is used for intermittently outputting the amplified pulse control signal, and the pulse control signal is used for repairing the lead-acid battery to be charged with the vulcanization condition;
the conduction control circuit and the negative electrode of the lead-acid battery are respectively provided with a detection resistor used for sending a voltage feedback signal to the control panel, and the control panel controls the charging voltage generation circuit to adjust the output charging voltage according to the feedback voltage.
The control panel connector is used for mounting a control panel, the rechargeable battery connector is used for mounting the anode and the cathode of the rechargeable battery, and the direct current power supply is used for providing working current for the amplifying circuit and the conducting control circuit;
the rechargeable battery connector is provided with three pins, wherein a pin I of the rechargeable battery connector is used as a positive electrode connecting end of the rechargeable battery, and a pin III of the rechargeable battery connector is used as a negative electrode connecting end of the rechargeable battery;
the control board connector is provided with ten pins, and three pins of the control board connector are connected with pulse control signals output by the control board; a sixteenth resistor is arranged between the first pin of the control board connector and the third pin of the rechargeable battery connector for connection; a pin II of the control board connector is connected with the positive electrode of the direct-current power supply, and a pin ten is grounded;
the amplifying circuit comprises a twelfth resistor, a third triode, a nineteenth resistor, a fourteenth capacitor and a seventeenth resistor; a pin III of the control board connector is connected with a base electrode of a third triode through a twelfth resistor, and a common connection point of an emitter electrode and the base electrode of the third triode is connected with a nineteenth resistor, and the base electrode and the nineteenth resistor is grounded through a fourteenth capacitor;
the conduction control circuit comprises a field effect tube, a shunt, a twelfth capacitor, a fifteenth resistor, a thirteenth capacitor and an eighteenth resistor, a grid electrode of the field effect tube is connected with a collector electrode of a third triode through the seventeenth resistor, and a pulse control signal amplified by the third triode is used for controlling the intermittent conduction of the field effect tube; the drain electrode of the field effect transistor is connected with a pin III of the rechargeable battery connector, and the source electrode of the field effect transistor is grounded through the shunt; two ends of the twenty-first resistor are respectively connected with the common connection points of the drain electrode and the source electrode of the field effect transistor and the shunt; the twelfth capacitor is connected with the fifteenth resistor in series and then connected with the twenty-first resistor in parallel; the common connection point of the field effect tube and the seventeenth resistor is grounded after passing through a filter circuit consisting of a thirteenth capacitor and an eighteenth resistor;
and the voltages at the two ends of the twenty-first resistor and the sixteenth resistor are used as feedback voltages and are transmitted to the control board, and the control board adapts to the corresponding charging voltages according to the feedback voltages.
Specifically, the charging voltage generating circuit comprises a transformer, a seventh diode, an eighth diode and a ninth capacitor which are connected in parallel are arranged on the secondary side of the transformer, and the cathodes of the seventh diode and the eighth diode are connected with the first pin of the charging battery connector.
The invention also discloses a charging method of the lead-acid battery voltage self-adaptive charging circuit, which is characterized by sequentially executing the following steps:
s1, the control board sends an intermittent control signal to the base electrode of the third triode and controls the intermittent conduction of the third triode, so that the field effect tube is controlled to be intermittently conducted and connected with the charging circuit, and pulse current is generated; charging by pulse current, recovering the activity of the lead-acid battery, and recovering the voltage of the battery to normal voltage;
and S2, detecting the voltage of the battery, selecting the charging voltage of the lead-acid battery by the control board according to the detected voltage of the battery, and charging the lead-acid battery.
The invention also discloses a lead-acid battery charger, which is characterized in that: the lead-acid battery voltage self-adaptive charging circuit is included.
Has the advantages that: due to the adoption of the technical scheme, the invention has the following technical effects:
(1) the charging method of the invention firstly uses pulse current for charging, can effectively recover the activity of the lead-acid battery and recover the voltage of the battery to normal voltage, repairs the lead-acid battery which is partially vulcanized and prolongs the effective service life of the lead-acid battery;
(2) the charging method of the invention ensures the accuracy of the detection of the voltage of the battery by effectively recovering and detecting the battery which is placed for a long time or has vulcanized no-load and low voltage of the electrode, and then reasonably selects the charging voltage according to the recovered battery voltage adapter through the control circuit to complete the charging of the lead-acid battery.
Drawings
FIG. 1 is a block diagram of a voltage adaptive charging circuit for a lead-acid battery according to the present invention;
FIG. 2 is a circuit diagram of one embodiment of a lead acid battery voltage adaptive charging circuit of the present invention;
FIG. 3 is a circuit diagram of the battery pulse repair circuit of FIG. 1;
wherein the control board connector-CN 3, the rechargeable battery connector-CN 2; a sixteenth resistor-R16, a twelfth resistor-R12, a third triode-Q3, a nineteenth resistor-R19, a fourteenth capacitor-C14 and a seventeenth resistor-R17; a field effect transistor-Q6, a shunt-RS 1, a twelfth capacitor-C12, a fifteenth resistor-R15, a thirteenth capacitor-C13 and an eighteenth resistor-R18;
a transformer-T1, a seventh diode-D7, an eighth diode-D8 and a ninth capacitor-C9; a ninth diode-D9, a tenth capacitor-C11, an eleventh capacitor-C11, a twelfth diode-D10;
a twenty-second resistor-R22, a twenty-third resistor-R23, a fifteenth capacitor-C15, a twentieth resistor-R20, a sixteenth capacitor-C16, a twenty-fourth resistor-R24 and a twenty-fifth resistor-R25; a seventeenth capacitor-C17, a twenty sixth resistor-R26, a twenty seventh resistor-R27, an eleventh diode-R11, an eighteenth capacitor-C18, a nineteenth capacitor-C19, a twentieth capacitor-C20, a voltage regulator-U4, a twenty eighth resistor-R28, a twenty ninth resistor-R29, a thirty resistor-R30, a thirty eleventh resistor-R31, a thirty second resistor-R32, a twenty first capacitor-C21 and an IC-U3.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 2, the present invention discloses a new circuit for repairing a battery and detecting a battery voltage based on pulse charging, which comprises a control board, an amplifying circuit connected with the control board, a conduction control circuit, a charging voltage generating circuit, a control board connector CN3 for installing the control board, a charging battery connector CN2 for installing the positive and negative electrodes of the charging battery, and a dc power supply for providing a working current for the amplifying circuit and the conduction control circuit.
As shown in fig. 2 and 3, in the present embodiment, the rechargeable battery connector CN2 has three pins, pin one of the rechargeable battery connector CN2 is used as the rechargeable battery positive connection terminal, and pin three is used as the rechargeable battery negative connection terminal;
the control board connector CN3 is provided with ten pins, and the three pins of the control board connector CN3 are connected with pulse control signals output by the control board; the pin I of the control board connector CN3 is connected with the pin III of the rechargeable battery connector CN2 through a sixteenth resistor R16; a pin II of the control board connector is connected with the positive electrode of the direct-current power supply, and a pin ten is grounded;
a twelfth resistor R12, a third triode Q3, a nineteenth resistor R19, a fourteenth capacitor C14 and a seventeenth resistor R17 which form an amplifying circuit; a pin III of the control board connector is connected with a base electrode of a third triode Q3 through a twelfth resistor R12, and a common connection point of a nineteenth resistor R19, the base electrode and a nineteenth resistor R19 is connected between an emitting electrode and the base electrode of the third triode Q3 and is grounded through a fourteenth capacitor C14;
a field effect transistor Q6, a shunt RS1, a twelfth capacitor C12, a fifteenth resistor R15, a thirteenth capacitor C13 and an eighteenth resistor R18 which form a conduction control circuit, wherein the grid electrode of the field effect transistor Q6 is connected with the collector electrode of a third triode Q3 through a seventeenth resistor R17, and a pulse control signal amplified by a third triode Q3 is used for controlling the intermittent conduction of the field effect transistor Q6; the drain electrode of the field effect transistor Q6 is connected with a pin III of the rechargeable battery connector, and the source electrode is grounded through a current divider RS 1; two ends of the twenty-first resistor R21 are respectively connected with the common connection point of the drain electrode and the source electrode of the field effect transistor Q6 and the shunt RS 1; the twelfth capacitor C12 is connected in series with the fifteenth resistor R15 and then connected in parallel with the twenty-first resistor; the common connection point of the field effect transistor Q6 and the seventeenth resistor R17 is grounded after passing through a filter circuit consisting of a thirteenth capacitor C13 and an eighteenth resistor R18;
the voltage across the twenty-first resistor R21 and the sixteenth resistor R16 is used as feedback voltage and transmitted to the control board.
The charging voltage generating circuit comprises a transformer T1, a seventh diode D7, an eighth diode D8 and a ninth capacitor C9 which are connected in parallel are arranged on the secondary side of the transformer T1, and the cathodes of the seventh diode D7 and the eighth diode D8 are connected with a first pin of a charging battery connector CN 2. In the charging circuit of the invention, the transformer T1 always works in a switching power supply state and has output voltage, but the charging current loop is controlled by a field effect transistor Q6, and the pulse current charging is realized by controlling the intermittent conduction of Q3 by the control panel giving an intermittent control signal to the base of Q3 so as to control the intermittent conduction of Q6 to switch on the charging loop, thereby generating pulse charging current.
In the invention, the control panel can adopt a singlechip or an autonomously designed control circuit board, and comprises an output end for outputting a pulse control signal. The transformer T1 is a component of the charging power supply (switching power supply), and T1 may be individually designed or selected according to the power of the charging power supply (switching power supply). As shown in fig. 2, the present embodiment further includes a constant current control circuit of the charging power supply, i.e., the switching power supply. The working principle of the charging circuit of the invention is as follows: after the battery charger is started and connected with a battery to be charged, a pin III of CN3 receives a pulse control signal sent by a control panel, the pulse control signal reaches a base electrode of a triode Q3 through a resistor R12, passes through an emitter electrode to a collector electrode of the triode Q3, amplifies the pulse signal, reaches a grid electrode of a field-effect tube Q6 through R17, controls the intermittent conduction of a field-effect tube Q6, a charging current generated by the charger passes through a pin D8 to CN2 to be connected with an anode of the battery to be charged, then passes through a cathode electrode of the battery to be charged to a pin III of CN2, passes through a drain electrode to a source electrode of the field-effect tube Q6, reaches a cathode of a charging power supply through a shunt S1, performs pulse charging on the battery to be charged, controls pulse charging time through the control panel, eliminates the vulcanization reaction of an electrode of the lead-acid battery after a period of pulse charging, and recovers the normal voltage of the lead-acid, through R16, R21 feeds back the voltage to the control board, namely, the positive voltage is detected by a resistor R21 to the ground through RS1 and serves as the detected ground, the positive voltage is transmitted to the control board through the detection of a resistor R16, and the battery voltage is detected by the control board to be matched with a reasonable charging voltage to charge the battery.
The charging method of the lead-acid battery voltage self-adaptive charging circuit comprises the following steps:
s1, charging with pulse current, recovering the activity of the lead-acid battery, and recovering the battery voltage to normal voltage, such as recovering the 12V battery to 10V and recovering the 24V battery to 20V;
and S2, detecting the voltage of the battery, selecting the charging voltage of the lead-acid battery according to the detected voltage of the battery, and charging the lead-acid battery.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a lead acid battery voltage self-adaptation charging circuit which characterized in that: the device comprises a control panel, an amplifying circuit connected with the control panel, a conduction control circuit and a charging voltage generating circuit; the output end of the charging voltage generating circuit is connected with the anode of the lead-acid battery to be charged and is used for providing adaptive charging voltage under the control of the control panel; the control panel is provided with an output end of a pulse control signal, the pulse control signal is connected to the negative electrode of the lead-acid battery to be charged through an amplifying circuit and a conduction control circuit which are sequentially connected, the conduction control circuit is used for intermittently outputting the amplified pulse control signal, and the pulse control signal is used for repairing the lead-acid battery to be charged with the vulcanization condition;
the conduction control circuit and the negative electrode of the lead-acid battery are respectively provided with a detection resistor used for sending a voltage feedback signal to the control panel, and the control panel controls the charging voltage generation circuit to adjust the output charging voltage according to the feedback voltage.
2. The adaptive voltage charging circuit for the lead-acid battery according to claim 1, wherein: the device also comprises a control board connector (CN3) for mounting a control board, a rechargeable battery connector (CN2) for mounting the anode and the cathode of the rechargeable battery, and a direct current power supply for providing working current for the amplifying circuit and the conducting control circuit;
the rechargeable battery connector (CN2) is provided with three pins, wherein a pin I of the rechargeable battery connector (CN2) is used as a rechargeable battery positive electrode connecting end, and a pin III is used as a rechargeable battery negative electrode connecting end;
the control board connector (CN3) is provided with ten pins, and the pins of the control board connector (CN3) are connected with pulse control signals output by the control board; the first pin of the control board connector (CN3) is connected with the third pin of the rechargeable battery connector (CN2) through a sixteenth resistor (R16); a pin II of the control board connector is connected with the positive electrode of the direct-current power supply, and a pin ten is grounded;
the amplifying circuit comprises a twelfth resistor (R12), a third triode (Q3), a nineteenth resistor (R19), a fourteenth capacitor (C14) and a seventeenth resistor (R17); a pin III of the control board connector (CN3) is connected with the base electrode of a third triode (Q3) through a twelfth resistor (R12), and a common connection point of a nineteenth resistor (R19), a base electrode and a nineteenth resistor (R19) is connected between the emitter electrode and the base electrode of the third triode (Q3) and is grounded through a fourteenth capacitor (C14);
the conduction control circuit comprises a field effect transistor (Q6), a shunt (RS1), a twelfth capacitor (C12), a fifteenth resistor (R15), a thirteenth capacitor (C13) and an eighteenth resistor (R18), wherein the grid electrode of the field effect transistor (Q6) is connected with the collector electrode of a third triode (Q3) through a seventeenth resistor (R17), and a pulse control signal amplified by the third triode (Q3) is used for controlling the intermittent conduction of the field effect transistor (Q6); the drain electrode of the field effect transistor (Q6) is connected with a pin III of the rechargeable battery connector, and the source electrode of the field effect transistor is grounded through a shunt (RS 1); two ends of the twenty-first resistor (R21) are respectively connected with the common connection point of the drain electrode and the source electrode of the field effect transistor (Q6) and the shunt (RS 1); the twelfth capacitor (C12) is connected in series with the fifteenth resistor (R15) and then connected in parallel with the twenty-first resistor (R21); the common connection point of the field effect transistor (Q6) and the seventeenth resistor (R17) is grounded through a filter circuit consisting of a thirteenth capacitor (C13) and an eighteenth resistor (R18);
and the voltage at two ends of the twenty-first resistor (R21) and the sixteenth resistor (R16) is used as feedback voltage and is transmitted to the control board, and the control board adapts to the corresponding charging voltage according to the feedback voltage.
3. The adaptive voltage charging circuit for the lead-acid battery according to claim 2, wherein: the charging voltage generating circuit comprises a transformer (T1), a seventh diode (D7), an eighth diode (D8) and a ninth capacitor (C9) which are connected in parallel are arranged on the secondary side of the transformer (T1), and the cathodes of the seventh diode (D7) and the eighth diode (D8) are connected with a first pin of a charging battery connector (CN 2).
4. A charging method for a voltage adaptive charging circuit of a lead-acid battery according to any one of claims 1 to 3, characterized by sequentially executing the steps of:
s1, the control panel sends out an intermittent control signal to the base electrode of the third triode (Q3) to control the intermittent conduction of the third triode (Q3), so that the field effect transistor (Q6) is controlled to be intermittently conducted to connect the charging loop, and the generated pulse current is generated; charging by pulse current, recovering the activity of the lead-acid battery, and recovering the voltage of the battery to normal voltage;
and S2, detecting the voltage of the battery, selecting the charging voltage of the lead-acid battery by the control board according to the detected voltage of the battery, and charging the lead-acid battery.
5. A lead-acid battery charger, characterized by: a voltage adaptive charging circuit comprising a lead acid battery as claimed in any one of claims 1 to 3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166836.9A CN112821511A (en) | 2021-02-05 | 2021-02-05 | Self-adaptive charging circuit, charging method and charger for lead-acid battery voltage |
| PCT/CN2021/124541 WO2022166257A1 (en) | 2021-02-05 | 2021-10-19 | Voltage-adaptive charging circuit for lead acid battery, charging method, and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166836.9A CN112821511A (en) | 2021-02-05 | 2021-02-05 | Self-adaptive charging circuit, charging method and charger for lead-acid battery voltage |
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| Publication Number | Publication Date |
|---|---|
| CN112821511A true CN112821511A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110166836.9A Pending CN112821511A (en) | 2021-02-05 | 2021-02-05 | Self-adaptive charging circuit, charging method and charger for lead-acid battery voltage |
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| Country | Link |
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| CN (1) | CN112821511A (en) |
| WO (1) | WO2022166257A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166257A1 (en) * | 2021-02-05 | 2022-08-11 | 浙江中剑科技股份有限公司 | Voltage-adaptive charging circuit for lead acid battery, charging method, and charger |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7888914B2 (en) * | 2008-05-22 | 2011-02-15 | Man Oi Cleo Ng | Battery rejuvenation method and apparatus |
| CN103700901B (en) * | 2014-01-09 | 2015-08-19 | 上海广为美线电源电器有限公司 | A kind of multisection type intelligent charging method |
| CN104682529B (en) * | 2015-03-13 | 2017-03-01 | 李成祥 | A kind of charger of automatic adaptation lead-acid battery group voltage |
| CN209119263U (en) * | 2018-11-20 | 2019-07-16 | 大城绿川（深圳）科技有限公司 | A kind of high-capacity lead-acid storage battery charger |
| CN211456747U (en) * | 2020-02-27 | 2020-09-08 | 杭州明坤电器有限公司 | Dual-purpose type lead acid battery charger for charging and repairing |
| CN214255787U (en) * | 2021-02-05 | 2021-09-21 | 浙江中剑科技股份有限公司 | Self-adaptive charging circuit and charger for lead-acid battery voltage |
| CN112821511A (en) * | 2021-02-05 | 2021-05-18 | 浙江中剑科技股份有限公司 | Self-adaptive charging circuit, charging method and charger for lead-acid battery voltage |
-
2021
- 2021-02-05 CN CN202110166836.9A patent/CN112821511A/en active Pending
- 2021-10-19 WO PCT/CN2021/124541 patent/WO2022166257A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166257A1 (en) * | 2021-02-05 | 2022-08-11 | 浙江中剑科技股份有限公司 | Voltage-adaptive charging circuit for lead acid battery, charging method, and charger |
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| WO2022166257A1 (en) | 2022-08-11 |
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