CN112332488B - Lead-acid battery charger and charging method - Google Patents
Lead-acid battery charger and charging method Download PDFInfo
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- CN112332488B CN112332488B CN202011233505.4A CN202011233505A CN112332488B CN 112332488 B CN112332488 B CN 112332488B CN 202011233505 A CN202011233505 A CN 202011233505A CN 112332488 B CN112332488 B CN 112332488B
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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
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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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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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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- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a lead-acid battery charger and a charging method, wherein the battery charger comprises: the charger comprises an input end interface, a charger main body, an output end, a central control module, a temperature detection module, a display screen and a wireless communication module; the lead-acid battery charging method comprises the following steps: firstly, a charging user connects an output end interface of a charger with a battery; connecting the input end interface with an external power supply; and step three, when the display screen of the charger is lightened, the user wirelessly connects the mobile phone with the charger, selects a corresponding rechargeable battery model through the mobile phone and confirms to charge. The invention intelligently charges the multi-type lead-acid batteries by setting three-stage charging modes of constant-current charging, constant-voltage charging and trickle charging and autonomously switches the charging mode in the charging process, thereby effectively prolonging the service life of the lead-acid batteries.
Description
Technical Field
The invention relates to the technical field of battery charging, in particular to a lead-acid battery charger and a charging method.
Background
A lead-acid battery is a storage battery with electrodes mainly made of lead and its oxides and electrolyte solution of sulfuric acid solution. In the discharge state of the lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in a charged state, the main components of the positive electrode and the negative electrode are lead sulfate. The nominal voltage of a single-lattice lead-acid battery is 2.0V, and the battery can be discharged to 1.5V and charged to 2.4V; in application, 6 single-cell lead-acid batteries are often connected in series to form a lead-acid battery with a nominal 12V, 24V, 36V, 48V and the like. The application of the lead-acid storage battery is rapidly developed due to the economy and the applicability of the hydrochloric acid battery, in order to ensure the service life and the service time of the lead-acid battery, the lead-acid battery has strict requirements on the magnitude of the charging current and the magnitude of the voltage, different charging states are required under the condition of different voltages or capacities of the battery, or high-current constant-current charging or constant-voltage trickle charging and the like are required, the lead-acid battery is easily damaged or not fully charged due to overhigh or overlow voltage, current or wrong charging modes, and the actual use is seriously influenced. However, the charging mode of the common charger in the current market is single, the automatic adjusting capability is poor, and the service life of the lead-acid battery is seriously influenced.
Disclosure of Invention
Therefore, the invention provides a lead-acid battery charger and a charging method, which are used for solving the problems of short service life of a lead-acid battery caused by single charging mode and poor automatic regulating capability of the lead-acid battery charger in the prior art.
To achieve the above object, the present invention provides a lead-acid battery charger, comprising:
the input end interface is used for connecting an external power supply;
the charger main body is connected with the input end interface, and a rectifying module and a voltage transformation module are arranged in the charger main body and used for regulating the input current to the required magnitude and outputting the input current;
the output end interface is connected with the charger main body and used for transmitting current to a battery to be charged and detecting voltage at two ends of the battery;
the central control module is arranged in the charger main body, is respectively connected with the input end interface and the output end interface, and is used for adjusting the working state of the charger main body according to the voltage information of the two ends of the battery fed back by the output end interface;
the temperature detection module is arranged in the charger main body, is connected with the central control module and is used for detecting the temperature of the environment around the charger;
the display screen is arranged on the charger main body, is connected with the central control module and is used for displaying the electric quantity and the charging mode of the battery;
the wireless communication module is arranged on the charger main body and connected with the central control module, the wireless communication module is also wirelessly connected with a mobile phone of a charging user, and the wireless communication module sends a prompt short message to the user after charging is finished;
the central control module is provided with a full-charge voltage matrix A0 of the battery to be charged, a constant-current charging initial current matrix B0, a temperature matrix C0, a temperature-to-initial current adjustment parameter matrix C0 and a charging mode matrix D0, wherein the D0 comprises three charging modes, namely D1, D2 and D3, a voltage ratio matrix E0 and a difference matrix G0 of current values; when the charger is used for charging, a user selects a full-power voltage Ai of a battery to be charged from the A0 matrix, the output end interface detects the voltage a at two ends of the battery to be charged and transmits a detection result to the central control module, the central control module calculates a ratio E of a to Ai, compares parameters in the E0 matrix with parameters in the E0 matrix and selects a corresponding initial charging mode according to the comparison result, and in the charging process, the central control module periodically calculates an E value and adjusts the charging mode of the charger according to the comparison result of the parameters in the E0 matrix;
when the charger charges the battery by using the current Bi ' and passes through the constant-current charging voltage detection time length T1, the output end interface detects the voltage a1 at two ends of the rechargeable battery and transmits the detection result to the central control module, the central control module calculates the ratio E ' of a1 to Ai and compares E ' with E1, and the next stage charging mode is selected according to the comparison result;
when the charger charges in a D2 mode, the central control module presets a main constant voltage value of the charger to be Ai', when the charger charges in a D2 mode and passes through a constant voltage charging voltage detection time length T2, the output end interface detects voltage a2 at two ends of the rechargeable battery and transmits a detection result to the central control module, the central control module calculates a ratio Ez of the voltage a2 at the two ends of the rechargeable battery to the real full-charge voltage Az of the rechargeable battery and compares the Ez with E2, and a next-stage charging mode is selected according to a comparison result;
when the charger adopts a D3 mode for charging and the elapsed voltage detection time length T3, the output end interface detects the voltage a3 at the two ends of the rechargeable battery and transmits the detection result to the central control module, the central control module calculates the ratio Ez 'of the voltage a3 at the two ends of the rechargeable battery and the real full-charge voltage Az of the rechargeable battery, the Ez' is compared with 1, and whether the charging is finished or not is judged according to the comparison result.
Further, for the constant-current charging initial current matrix B0, the B0 includes four kinds of constant-current charging initial currents, i.e., B1, B2, B3, and B4, where B1 is a first preset constant-current charging initial current, B2 is a second preset constant-current charging initial current, B3 is a third preset constant-current charging initial current, and B4 is a fourth preset constant-current charging initial current, and the current values sequentially increase;
when the charger is used for charging in a D1 mode and Ai is selected as the full-charge voltage of the battery to be charged, the central control module selects Bi from the B0 matrix as constant-current charging initial current;
when the central control module selects Bi as the initial constant-current charging current, the temperature detection module detects the temperature C of the surrounding environment of the charger and transmits the detection result to the central control module, and the central control module compares the internal parameters of C and C0 to adjust the selected initial constant-current charging current Bi:
when C is less than or equal to C1, the central control module selects C1 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when C is larger than C1 and is less than or equal to C2, the central control module selects C2 from the C0 matrix as a temperature-to-initial current adjusting parameter;
when C is more than C2 and less than or equal to C3, the central control module does not adjust the constant-current charging initial current;
when C is larger than C3 and is less than or equal to C4, the central control module selects C3 from the C0 matrix as a temperature-to-initial current adjusting parameter;
when C is larger than C4, the central control module selects C4 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when the central control module selects Bi as the constant-current charging initial current and selects cj as the temperature-to-initial-current adjusting parameter, j =1,2,3,4, and the central control module adjusts the charging current to be Bi ', Bi' = Bi × cj.
Further, when the charger charges the battery with the current Bi ' and passes through the constant-current charging voltage detection time period T1, the output terminal interface detects the voltage a1 at the two ends of the rechargeable battery, and transmits the detection result to the central control module, and the central control module calculates the ratio E ' of the voltage a1 at the two ends of the battery to the full-charge voltage Ai of the battery and compares the ratio E ' with the ratio E1:
when E' > E1, the central control module adjusts the charging mode to the D2 mode;
when E '≦ E1, the central control module continues with D1 as the charging mode and repeats the above until E' > E1.
Further, the central control module is further provided with a charger main body constant voltage value adjusting parameter matrix H0, the H0 includes three charger main body constant voltage value adjusting parameters of H1, H2 and H3, wherein H1 is a first preset charger main body constant voltage value adjusting parameter, H2 is a second preset charger main body constant voltage value adjusting parameter, and H3 is a third preset charger main body constant voltage value adjusting parameter, and the parameters are sequentially increased;
when the charger adopts a D2 mode to charge, the central control module controls the constant voltage value of the charger main body to be Ai ', Ai' =1.2Ai, the output end interface detects the voltage F at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the difference value F between the voltage F at two ends of the battery and the full-charge voltage Ai of the battery, F = Ai-F, the central control module calculates the theoretical current value g under the voltage difference,
k is a compensation parameter of the voltage difference to a theoretical current value, the charger main body detects an actual output current value G and transmits a detection result to the central control module, the central control module calculates a difference value delta G between the theoretical current value and the actual current value, delta G = G-G, and the central control module compares the delta G with internal parameters of a G0 matrix:
when the delta G is less than or equal to G1, the central control module judges that the state of the rechargeable battery is good and does not adjust the constant voltage value of the charger main body;
when G1 is larger than or equal to Δ G and is less than or equal to G2, the central control module judges that the storage capacity of the rechargeable battery is reduced, and selects H1 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body;
when G2 is larger than or equal to Δ G and is less than or equal to G3, the central control module judges that the storage capacity of the rechargeable battery is reduced, and selects H2 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body;
when G3 is larger than or equal to Δ G and is less than or equal to G4, the central control module judges that the storage capacity of the rechargeable battery is reduced, and selects H3 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body;
when Hp is selected as a constant voltage value adjusting parameter of the charger main body, p =1,2,3, the central control module adjusts the constant voltage value of the charger main body to Ai ", Ai" = Ai '-Ai' × Hp.
Further, when the charger charges in a D2 mode, the central control module calculates the true full-charge voltage Az of the rechargeable battery, Az = Ai- Δ G × K, K is a compensation parameter of a difference Δ G between a theoretical current value and an actual current value to the true full-charge voltage Az of the battery, when the charger charges in a D2 mode and passes through a constant-voltage charging voltage detection time period T2, the voltage a2 at two ends of the rechargeable battery is detected and a detection result is transmitted to the central control module, the central control module calculates a ratio Ez between the voltage a2 at two ends of the rechargeable battery and the true full-charge voltage Az of the rechargeable battery, and the Ez is compared with E2:
when Ez > E2, the central control module adjusts the charging mode to a D3 mode;
when E is less than or equal to E2, the central control module continues to use D2 as a charging mode and repeats the operation until Ez is more than E2.
Further, when the charger charges in a D3 mode and the elapsed time-lapse voltage detection duration T3 is reached, detecting the voltage a3 across the rechargeable battery and transmitting the detection result to the central control module, where the central control module calculates a ratio Ez 'of the voltage a3 across the rechargeable battery to the true full-charge voltage Az of the rechargeable battery and compares the Ez' with 1:
when Ez' is more than or equal to 1, the central control module continues to charge for a voltage detection time length T3 by taking D3 as a charging mode, judges that charging is finished and stops charging after the charging is finished, and controls the wireless communication module to send a charging completion prompt to the mobile phone of the user;
when Ez '< 1, the central control module continues with D3 as the charging mode and repeats the above operations until Ez' > 1.
Further, when the central control module determines that the charging is completed and stops the charging, the central control module starts timing, when the battery is not removed after the charging stopping detection time period T4, the output terminal interface detects the voltage ax at two ends of the rechargeable battery and transmits the detection result to the central control module, the central control module calculates the ratio X of the ax to the real full-charge voltage Az of the rechargeable battery,
：
when X is less than 0.95, the central control module starts a charger to charge the battery according to the method;
when X is larger than or equal to 0.95, the central control module maintains the charging stopping state, the central control module starts to time, and when the battery is not removed after the charging stopping detection time period T4, the operation is repeated until X is smaller than 0.95 or the user removes the rechargeable battery.
Further, for a full-charge voltage matrix a0 of the battery to be charged, the a0 includes four full-charge voltages a1, a2, A3 and a4, a1 is a first preset full-charge voltage of the battery, a2 is a second preset full-charge voltage of the battery, A3 is a third preset full-charge voltage of the battery, and a4 is a fourth preset full-charge voltage of the battery, wherein the full-charge voltage values sequentially increase;
when the charger is used for charging, a charging user selects the full-charge voltage Ai of the battery to be charged, i =1,2,3,4, the output end interface detects the voltage a at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the ratio E of the voltage a at two ends of the battery to be charged and the full-charge voltage Ai of the battery and compares the E with an inner matrix of E0,
：
when E is less than or equal to E1, the central control module selects D1 from the D0 matrix as a charging mode;
when E1 is more than E and less than or equal to E2, the central control module selects D2 from the D0 matrix as a charging mode;
when E > E2, the central control module selects D3 from the D0 matrix as the charging mode.
When the lead-acid battery charger is used for charging, a charging user firstly connects the output port of the charger with the battery, then connects the input port with an external power supply, and when the display screen of the charger is lightened, the user wirelessly connects the mobile phone with the charger and selects the corresponding type of the charging battery through the mobile phone to confirm the charging.
Further, after the user confirms that the battery is charged, the charger pre-charges the battery, whether the user type is correctly selected is judged, when the judgment result is the same as the user selection result, the central control module controls the charger to charge according to the mode, and when the judgment result is different from the user selection result, the central control module stops charging of the charger and sends a selection error prompt to the mobile phone of the user through the wireless communication module;
compared with the prior art, the invention has the advantages that the central control module is provided with a full-power voltage matrix A0 of the battery to be charged, the A0 comprises four full-power voltages and constant-current charging initial current matrices B0 of A1, A2, A3 and A4, the B0 comprises four constant-current charging initial currents and temperature matrices C0 of B1, B2, B3 and B4, the C0 comprises four temperature and temperature pair initial current adjusting parameter matrices C0 of C1, C2, C3 and C4, the C0 comprises four temperature pair initial current adjusting parameters of C1, C2, C3 and C4, a charging mode matrix D4, the D4 comprises three charging modes of D4, D4 and a voltage ratio matrix E4, the E4 comprises two voltage ratios of E4 and E4, a charger main body adjusting parameter matrix H72 comprises three constant-voltage adjusting parameters of a constant-voltage H4 and a constant-voltage adjusting parameter 36H 4, and a difference matrix G0 of current values, wherein G0 comprises differences of four current values of G1, G2, G3 and G4; when the charger is used for charging, the output end interface detects the voltage a at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the ratio E of the voltage a at two ends of the battery to be charged and the full-charge voltage A of the battery, compares the ratio E with an inner matrix of E0, and selects a corresponding charging mode according to the comparison result; through the automatic adjustment of the internal electric quantity value of the battery in the charging mode, the lead-acid storage battery is charged in a three-section mode, and the service life of the storage battery is effectively prolonged.
Further, when the charger is used for charging in a D1 mode, the central control module compares Ai with internal parameters A0 to select constant-current charging initial current Bi, the temperature detection module detects the temperature C of the surrounding environment of the charger and transmits a detection result to the central control module, the central control module compares the C with the internal parameters C0, the charging current is Bi' according to the comparison result, the charging current is intelligently adjusted according to the environment, and the charging time is effectively shortened.
Further, when the charger charges the battery with the current Bi ' and passes through the constant-current charging voltage detection time period T1, the output terminal interface detects the voltage a1 at the two ends of the rechargeable battery, and transmits the detection result to the central control module, the central control module calculates the ratio E ' of the voltage a1 at the two ends of the battery to the full-charge voltage Ai of the battery, compares the ratio E ' with the ratio E1, and selects the next-stage charging mode according to the comparison result, so that the charging time is further shortened, and the service life is prolonged.
Further, when the charger charges in a D2 mode, the central control module controls the constant voltage value of the charger main body to be Ai ', Ai' =1.2Ai, the output end interface detects the voltage F at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the difference value F between the voltage F at two ends of the battery and the full-charge voltage Ai of the battery, F = A-F, the central control module calculates the theoretical current value g under the voltage difference,
and k is a compensation parameter of the voltage difference to a theoretical current value, the charger main body detects an actual output current value G and transmits a detection result to the central control module, the central control module calculates a difference value delta G between the theoretical current value and the actual current value, delta G = G-G, the central control module compares the delta G with an internal parameter of a G0 matrix, and the constant voltage value of the charger main body is adjusted through the comparison result, so that the service life of the storage battery is further prolonged.
Further, the central control module calculates the real full-charge voltage Az of the rechargeable battery, Az = Ai- Δ G × K, K is a compensation parameter of the difference value Δ G between the theoretical current value and the actual current value to the real full-charge voltage Az of the battery, when the charger is used for charging in a D2 mode and passes through the constant-voltage charging voltage detection time length T2, the voltage a2 at two ends of the rechargeable battery is detected and the detection result is transmitted to the central control module, the central control module calculates the ratio Ez of the voltage a2 at two ends of the rechargeable battery to the real full-charge voltage Az of the rechargeable battery and compares the Ez with E2, and the next-stage charging mode is selected according to the comparison result, so that the charging time is further shortened and the service life is prolonged.
Further, when the charger adopts a D3 mode for charging and the elapsed time-lapse voltage detection duration T3 is detected, the voltage a3 at the two ends of the rechargeable battery is detected and the detection result is transmitted to the central control module, the central control module calculates the ratio Ez 'of the voltage a3 at the two ends of the rechargeable battery and the real full-charge voltage Az of the rechargeable battery and compares the Ez' with 1,
when Ez' is more than or equal to 1, the central control module continues to charge for a voltage detection time length T3 by taking D3 as a charging mode, judges that charging is finished and stops charging after the charging is finished, and controls the wireless communication module to send a charging completion prompt to the mobile phone of the user; when Ez '< 1, the central control module continues to use D3 as a charging mode and repeats the operation until Ez' > 1; after the voltage meets the charging completion requirement, trickle charging is carried out for a certain time to make up for the capacity loss caused by self-discharge after the battery is fully charged, so that the battery can really reach the electric quantity saturation, and the service life of the battery is prolonged.
Further, when the central control module judges that charging is finished and stops charging, the central control module starts timing, when the battery is not removed after the charging stopping detection time period T4, the output end interface detects the voltage ax at two ends of the rechargeable battery and transmits the detection result to the central control module, the central control module calculates the ratio X of the ax to the real full-electricity voltage Az of the rechargeable battery, when X is larger than or equal to 0.95, the central control module maintains the charging stopping state, the central control module starts timing, when the battery is not removed after the charging stopping detection time period T4, the operation is repeated until X is smaller than 0.95 or the user removes the rechargeable battery; further make up the capacity loss that the battery caused because of self-discharge after full charge, prolong battery live time.
Further, when the lead-acid charger is used for charging, a charging user firstly connects the output port of the charger with a battery and then connects the input port with an external power supply, and when the display screen of the charger is lightened, the user wirelessly connects the mobile phone with the charger and selects a corresponding charging battery model through the mobile phone to confirm charging; when the user confirms to charge, the charger pre-charges the battery, whether the user type is correctly selected is judged, when the judgment result is the same as the user selection result, the central control module controls the charger to charge according to the mode, and when the judgment result is different from the user selection result, the central control module stops charging of the charger and sends a selection error prompt to the mobile phone of the user through the wireless communication module; the battery is prevented from being charged by selecting a wrong mode, and the service life of the storage battery is further prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a lead-acid charger according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention. It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a lead-acid charger according to the present invention. A lead-acid battery charger comprising: the charger comprises an input end interface 1, a charger main body 2, an output end interface 3, a central control module 4, a temperature detection module 5, a display screen 6 and a wireless communication module 7, wherein the input end interface 1 is used for connecting an external power supply; the charger main body 2 is connected with the input end interface 1, and a rectification module and a transformation module are arranged in the charger main body for regulating the input current to the required magnitude and outputting the input current; the output end interface 3 is connected with the charger main body 2 and used for transmitting current to a battery to be charged and detecting voltage at two ends of the battery; the central control module 4 is arranged inside the charger main body 2, is respectively connected with the input end interface 1 and the output end interface 3, and is used for adjusting the working state of the charger main body 2 according to the voltage information of the two ends of the battery fed back by the output end interface 3; the temperature detection module 5 is arranged inside the charger main body 2, connected with the central control module 4 and used for detecting the temperature of the environment around the charger; the display screen 6 is arranged on the charger main body 2, connected with the central control module 4 and used for displaying the electric quantity and the charging mode of the battery; the wireless communication module 7 is arranged on the charger main body 2 and connected with the central control module 4, the wireless communication module 7 is also wirelessly connected with a mobile phone of a charging user, and the wireless communication module 7 sends a prompt short message to the user after charging is finished;
the central control module 4 is provided with a full-charge voltage matrix A of a battery to be charged, the A comprises a full-charge voltage matrix B of the battery to be charged, the A comprises a full-charge voltage matrix A, a full-charge voltage matrix A of the battery to be charged, a constant-charge initial current matrix B of the battery to be charged, the B comprises a constant-charge initial current matrix C of the battery to be charged, the B comprises a temperature-to-initial-current adjustment parameter matrix C of the battery to be charged, the C comprises a temperature-to-initial-current adjustment parameter matrix C of the battery to be charged, the C comprises a temperature-to-initial-current adjustment parameter matrix C of the battery to be charged and a charge mode matrix D of the battery to be charged, the D comprises three charge modes D, D and D, and a voltage ratio matrix E, the E comprises two voltage ratios E and E, a charger main body constant voltage value adjustment parameter matrix H, the H comprises three, the G0 comprises differences of four current values of G1, G2, G3 and G4; when the charger is used for charging, the output terminal interface 3 detects the voltage a at two ends of the battery to be charged and transmits the detection result to the central control module 4, the central control module 4 calculates the ratio E of the voltage a at two ends of the battery to be charged and the full-charge voltage Ai of the battery, compares the ratio E with an internal matrix of E0, and selects a corresponding charging mode according to the comparison result;
when the charger is used for charging in a D1 mode, a charging user selects the full-charge voltage A of a battery to be charged, the central control module 4 compares the internal parameters A with A0 to select the constant-current charging initial current Bi, the temperature detection module 5 detects the temperature C of the surrounding environment of the charger and transmits the detection result to the central control module 4, the central control module 4 compares the internal parameters C with C0, and the charging current is Bi' according to the comparison result; when the charger charges the battery with current Bi ' and passes through a constant-current charging voltage detection time length T1, the output terminal interface 3 detects voltage a1 at two ends of the rechargeable battery and transmits a detection result to the central control module 4, the central control module 4 calculates a ratio E ' of the voltage a1 at the two ends of the battery to full-charge voltage Ai of the battery and compares the E ' with the E1, and a next-stage charging mode is selected according to the comparison result;
when the charger adopts a D2 mode to charge, the central control module 4 controls the constant voltage value of the charger main body 2 to be Ai ', Ai' =1.2Ai, the output end interface 3 detects the voltage F at two ends of the battery to be charged and transmits the detection result to the central control module 4, the central control module 4 calculates the difference value F between the voltage F at two ends of the battery and the full-charge voltage A of the battery, F = A-F, the central control module 4 calculates the theoretical current value g under the voltage difference,
k is a compensation parameter of the voltage difference to the theoretical current value, the charger main body 2 detects the actual output current value G and transmits the detection result to the central control module 4, the central control module 4 calculates the difference Δ G between the theoretical current value and the actual current value, Δ G = G-G, and the central control moduleThe module 4 compares the delta G with the internal parameters of the G0 matrix, and adjusts the constant voltage value of the charger main body 2 according to the comparison result; the central control module 4 calculates the true full-charge voltage Az of the rechargeable battery, Az = Ai-delta G × K, K is a compensation parameter of the difference value delta G between the theoretical current value and the actual current value to the true full-charge voltage Az of the battery, when the charger is used for charging in a D2 mode and the detection time length T2 of the constant-voltage charging voltage is passed, the voltage a2 at two ends of the rechargeable battery is detected and the detection result is transmitted to the central control module 4, the central control module 4 calculates the ratio Ez of the voltage a2 at two ends of the rechargeable battery to the true full-charge voltage Az of the rechargeable battery and compares the Ez with E2, and the next-stage charging mode is selected according to the comparison result;
when the charger adopts a D3 mode for charging and the elapsed voltage detection time length T3, the voltage a3 at the two ends of the rechargeable battery is detected and the detection result is transmitted to the central control module 4, the central control module 4 calculates the ratio Ez 'of the voltage a3 at the two ends of the rechargeable battery and the real full-charge voltage Az of the rechargeable battery, the Ez' is compared with 1, and whether the charging is finished or not is judged according to the comparison result.
Specifically, for a full-charge voltage matrix a0 of the battery to be charged, the a0 includes four full-charge voltages a1, a2, A3 and a4, where a1 is a full-charge voltage of a first preset battery to be charged, a2 is a full-charge voltage of a second preset battery to be charged, A3 is a full-charge voltage of a third preset battery to be charged, and a4 is a full-charge voltage of a fourth preset battery to be charged, and the voltage values sequentially increase;
for the constant-current charging initial current matrix B0, the B0 includes four kinds of constant-current charging initial currents, that is, B1, B2, B3, and B4, where B1 is a first preset constant-current charging initial current, B2 is a second preset constant-current charging initial current, B3 is a third preset constant-current charging initial current, and B4 is a fourth preset constant-current charging initial current, and the current values sequentially increase;
for the temperature matrix C0, the C0 includes four temperatures, i.e., C1, C2, C3, and C4, where C1 is a first preset temperature, C2 is a second preset temperature, C3 is a third preset temperature, and C4 is a fourth preset temperature, and the values of the temperatures sequentially increase;
for the matrix c0 of the temperature-to-initial-current adjustment parameter, c0 includes four temperature-to-initial-current adjustment parameters, c1, c2, c3 and c4, where c1 is a first preset temperature-to-initial-current adjustment parameter, c2 is a second preset temperature-to-initial-current adjustment parameter, c3 is a third preset temperature-to-initial-current adjustment parameter, and c4 is a fourth preset temperature-to-initial-current adjustment parameter;
for the charging mode matrix D0, the D0 includes three charging modes, D1, D2 and D3, wherein D1 is a constant current charging mode, D2 is a constant voltage charging mode, and D3 is a trickle charging mode;
for the voltage ratio matrix E0, the E0 includes two voltage ratios E1 and E2, where E1 is a first preset voltage ratio, E2 is a second preset voltage ratio, and E1 < E2;
for the charger main body 2 constant voltage value adjusting parameter matrix H0, the H0 includes three charger main body 2 constant voltage value adjusting parameters of H1, H2 and H3, wherein H1 is a first preset charger main body 2 constant voltage value adjusting parameter, H2 is a second preset charger main body 2 constant voltage value adjusting parameter, and H3 is a third preset charger main body 2 constant voltage value adjusting parameter, and the parameters are sequentially increased;
for the current value difference matrix G0, the G0 includes differences of four current values G1, G2, G3 and G4, where G1 is a difference of a first preset current value, G2 is a difference of a second preset current value, G3 is a difference of a third preset current value, and G4 is a difference of a fourth preset current value, and the values of the differences sequentially increase.
Specifically, when the charger is used for charging, a charging user selects full-charge voltage Ai of a battery to be charged, i =1,2,3,4, the output terminal interface 3 detects voltage a at two ends of the battery to be charged and transmits the detection result to the central control module 4, the central control module 4 calculates the ratio E of the voltage a at two ends of the battery to be charged and the full-charge voltage Ai of the battery and compares E with an inner matrix of E0,
：
when E is less than or equal to E1, the central control module 4 selects D1 from the D0 matrix as a charging mode;
when E1 is more than E and less than or equal to E2, the central control module 4 selects D2 from the D0 matrix as a charging mode;
when E > E2, the central control module 4 selects D3 from the D0 matrix as the charging mode.
Specifically, when charging with the charger in the D1 mode, the central control module 4 identifies Ai:
when Ai is A1, the central control module 4 selects B1 from the B0 matrix as a constant-current charging initial current;
when Ai is A2, the central control module 4 selects B2 from the B0 matrix as a constant-current charging initial current;
when Ai is A3, the central control module 4 selects B3 from the B0 matrix as a constant-current charging initial current;
when Ai is A4, the central control module 4 selects B4 from the B0 matrix as a constant-current charging initial current;
after the selection is finished, the temperature detection module 5 detects the temperature C of the surrounding environment of the charger and transmits the detection result to the central control module 4, and the central control module 4 compares the internal parameters of C and C0:
when C is less than or equal to C1, the central control module 4 selects C1 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when C is more than C1 and less than or equal to C2, the central control module 4 selects C2 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when C is more than C2 and less than or equal to C3, the central control module 4 does not adjust the constant-current charging initial current;
when C is more than C3 and less than or equal to C4, the central control module 4 selects C3 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when C is larger than C4, the central control module 4 selects C4 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when the temperature is Bi as the constant current charging initial current and cj is selected as the temperature-to-initial current adjusting parameter, i =1,2,3,4, j =1,2,3,4, the central control module 4 adjusts the charging current to be Bi ', Bi' = Bi × cj.
Specifically, when the charger charges the battery with the current Bi ' and passes through the constant-current charging voltage detection time period T1, the output port interface 3 detects the voltage a1 across the rechargeable battery, and transmits the detection result to the central control module 4, and the central control module 4 calculates the ratio E ' of the voltage a1 across the battery to the full-charge voltage a of the battery, and compares E ' with E1:
when E' > E1, the central control module 4 adjusts the charging mode to the D2 mode;
when E '≦ E1, the central control module 4 continues with D1 as the charging mode and repeats the above operations until E' > E1.
Specifically, when the charger charges in the D2 mode, the central control module 4 controls the constant voltage value of the charger main body 2 to be a ', a' =1.2Ai, the output port interface 3 detects the voltage F at two ends of the battery to be charged and transmits the detection result to the central control module 4, the central control module 4 calculates the difference F between the voltage F at two ends of the battery and the full-charge voltage a of the battery, F = a-F, the central control module 4 calculates the theoretical current value g at the voltage difference,
k is a compensation parameter of the voltage difference to the theoretical current value, the charger main body 2 detects the actual output current value G and transmits a detection result to the central control module 4, the central control module 4 calculates a difference Δ G between the theoretical current value and the actual current value, Δ G = G-G, and the central control module 4 compares the Δ G with internal parameters of a G0 matrix:
when the delta G is less than or equal to G1, the central control module 4 judges that the state of the rechargeable battery is good and does not adjust the constant voltage value of the charger main body 2;
when G1 is larger than or equal to Δ G and is less than or equal to G2, the central control module 4 judges that the storage capacity of the rechargeable battery is reduced, and the central control module 4 selects H1 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body 2;
when G2 is larger than or equal to Δ G and is less than or equal to G3, the central control module 4 judges that the storage capacity of the rechargeable battery is reduced, and the central control module 4 selects H2 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body 2;
when G3 is larger than or equal to Δ G and is less than or equal to G4, the central control module 4 judges that the storage capacity of the rechargeable battery is reduced, and the central control module 4 selects H3 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body 2;
when Hp is selected as the constant voltage value adjusting parameter of the charger main body 2, p =1,2,3, the central control module 4 adjusts the constant voltage value of the charger main body 2 to Ai ", Ai" = Ai '-Ai' × Hp.
Specifically, the central control module 4 calculates the true full-charge voltage Az of the rechargeable battery, Az = Ai- Δ G × K, K is a compensation parameter of the difference Δ G between the theoretical current value and the actual current value to the true full-charge voltage Az of the battery, when the charger is used for charging in a D2 mode and passes through a constant-voltage charging voltage detection time period T2, the voltage a2 at two ends of the rechargeable battery is detected and the detection result is transmitted to the central control module 4, and the central control module 4 calculates a ratio Ez between the voltage a2 at two ends of the rechargeable battery and the true full-charge voltage Az of the rechargeable battery and compares the Ez with E2:
when Ez > E2, the central control module 4 adjusts the charging mode to the D3 mode;
when E is less than or equal to E2, the central control module 4 continues to use D2 as the charging mode and repeats the operation until Ez is more than E2.
Specifically, when the charger charges in the D3 mode and the elapsed voltage detection time period T3 elapses, the voltage a3 across the rechargeable battery is detected and the detection result is transmitted to the central control module 4, and the central control module 4 calculates a ratio Ez 'of the voltage a3 across the rechargeable battery to the true full-charge voltage Az of the rechargeable battery and compares the Ez' with 1:
when Ez' is more than or equal to 1, the central control module 4 continues to charge for a voltage detection time length T3 by taking D3 as a charging mode, after the charging is finished, the central control module 4 judges that the charging is finished and stops the charging, and the central control module 4 controls the wireless communication module 7 to send a charging completion prompt to the mobile phone of the user;
when Ez '< 1, the central control module 4 continues to use D3 as the charging mode and repeats the above operations until Ez' > 1.
Specifically, when the central control module 4 determines that the charging is completed and stops the charging, the central control module 4 starts timing, and when the stop elapsesWhen the battery is not removed for the charging-stopping detection time period T4, the output terminal interface 3 detects the voltage ax at the two ends of the rechargeable battery and transmits the detection result to the central control module 4, the central control module 4 calculates the ratio X between ax and the real full-charge voltage Az of the rechargeable battery,
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when X is less than 0.95, the central control module 4 starts a charger to charge the battery according to the method;
when X is larger than or equal to 0.95, the central control module 4 maintains the charging stop state, the central control module 4 starts timing, and when the battery is not removed after the charging stop detection time period T4, the above operation is repeated until X is smaller than 0.95 or the user removes the rechargeable battery.
Specifically, the lead-acid battery charging method comprises the following steps when the charger is applied for charging:
firstly, a charging user firstly connects an output end interface 3 of a charger with a battery;
step two, connecting the input end interface 1 with an external power supply;
step three, when the display screen 6 of the charger is lightened, a user wirelessly connects the mobile phone with the charger, selects a corresponding rechargeable battery model through the mobile phone and confirms to charge;
when the user confirms to charge, the charger pre-charges the battery, whether the user type is correctly selected is judged, when the judgment result is the same as the user selection result, the central control module 4 controls the charger to charge according to the mode, and when the judgment result is different from the user selection result, the central control module 4 stops charging of the charger and sends a selection error prompt to the mobile phone of the user through the wireless communication module 7.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A lead-acid battery charger, comprising:
the input end interface is used for connecting an external power supply;
the charger main body is connected with the input end interface, and a rectifying module and a voltage transformation module are arranged in the charger main body and used for regulating the input current to the required magnitude and outputting the input current;
the output end interface is connected with the charger main body and used for transmitting current to a battery to be charged and detecting voltage at two ends of the battery;
the central control module is arranged in the charger main body, is respectively connected with the input end interface and the output end interface, and is used for adjusting the working state of the charger main body according to the voltage information of the two ends of the battery fed back by the output end interface;
the temperature detection module is arranged in the charger main body, is connected with the central control module and is used for detecting the temperature of the environment around the charger;
the display screen is arranged on the charger main body, is connected with the central control module and is used for displaying the electric quantity and the charging mode of the battery;
the wireless communication module is arranged on the charger main body and connected with the central control module, the wireless communication module is also wirelessly connected with a mobile phone of a charging user, and the wireless communication module sends a prompt short message to the user after charging is finished;
the central control module is provided with a full-charge voltage matrix A0 of the battery to be charged, a constant-current charging initial current matrix B0, a temperature matrix C0, a temperature-to-initial current adjustment parameter matrix C0 and a charging mode matrix D0, wherein the D0 comprises three charging modes, namely D1, D2 and D3, a voltage ratio matrix E0 and a difference matrix G0 of current values; when the charger is used for charging, a user selects the full-charge voltage Ai of the battery to be charged from the A0 matrix, the output end interface detects the voltage a at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the ratio E of a to Ai, compares the parameters in the E and E0 matrixes and selects a corresponding initial charging mode according to the comparison result, and in the charging process, the central control module periodically calculates the value E and adjusts the charging mode of the charger according to the comparison result of the parameters in the E and E0 matrixes;
for the charging mode matrix D0, the D0 includes three charging modes, D1, D2 and D3, wherein D1 is a constant current charging mode, D2 is a constant voltage charging mode, and D3 is a trickle charging mode;
for the voltage ratio matrix E0, the E0 includes two voltage ratios E1 and E2, where E1 is a first preset voltage ratio, E2 is a second preset voltage ratio, and E1 < E2;
when the charger charges the battery by using the current Bi ' and passes through the constant-current charging voltage detection time length T1, the output end interface detects the voltage a1 at two ends of the rechargeable battery and transmits the detection result to the central control module, the central control module calculates the ratio E ' of a1 to Ai and compares E ' with E1, and the next stage charging mode is selected according to the comparison result;
when the charger charges in a D2 mode, the central control module presets a main constant voltage value of the charger to be Ai', when the charger charges in a D2 mode and passes through a constant voltage charging voltage detection time length T2, the output end interface detects voltage a2 at two ends of the rechargeable battery and transmits a detection result to the central control module, the central control module calculates a ratio Ez of the voltage a2 at the two ends of the rechargeable battery to the real full-charge voltage Az of the rechargeable battery, compares the Ez with E2, and selects a next-stage charging mode according to the comparison result;
when the charger charges in a D3 mode and passes through a voltage detection time length T3, the output end interface detects the voltage a3 at two ends of the rechargeable battery and transmits a detection result to the central control module, the central control module calculates the ratio Ez 'of the voltage a3 at the two ends of the rechargeable battery and the real full-charge voltage Az of the rechargeable battery, compares Ez' with 1, and judges whether the charging is finished or not according to the comparison result.
2. The lead-acid battery charger according to claim 1, wherein for the constant-current charging initial current matrix B0, the B0 includes four constant-current charging initial currents, B1, B2, B3 and B4, wherein B1 is a first preset constant-current charging initial current, B2 is a second preset constant-current charging initial current, B3 is a third preset constant-current charging initial current, and B4 is a fourth preset constant-current charging initial current, and the current values sequentially increase;
for the temperature matrix C0, the C0 includes four temperatures, i.e., C1, C2, C3 and C4, where C1 is a first preset temperature, C2 is a second preset temperature, C3 is a third preset temperature, and C4 is a fourth preset temperature, and the values of the temperatures sequentially increase;
for the matrix c0 of the temperature-to-initial-current adjustment parameter, c0 includes four temperature-to-initial-current adjustment parameters, c1, c2, c3 and c4, where c1 is a first preset temperature-to-initial-current adjustment parameter, c2 is a second preset temperature-to-initial-current adjustment parameter, c3 is a third preset temperature-to-initial-current adjustment parameter, and c4 is a fourth preset temperature-to-initial-current adjustment parameter; when the charger is used for charging in a D1 mode and Ai is selected as the full-charge voltage of the battery to be charged, the central control module selects Bi from the B0 matrix as constant-current charging initial current; when the central control module selects Bi as the initial constant-current charging current, the temperature detection module detects the temperature C of the surrounding environment of the charger and transmits the detection result to the central control module, and the central control module compares the internal parameters of C and C0 to adjust the selected initial constant-current charging current Bi:
when C is less than or equal to C1, the central control module selects C1 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when C is larger than C1 and is less than or equal to C2, the central control module selects C2 from the C0 matrix as a temperature-to-initial current adjusting parameter;
when C is more than C2 and less than or equal to C3, the central control module does not adjust the constant-current charging initial current;
when C is larger than C3 and is less than or equal to C4, the central control module selects C3 from the C0 matrix as a temperature-to-initial current adjusting parameter;
when C is larger than C4, the central control module selects C4 from the C0 matrix as a temperature-to-initial-current adjusting parameter;
when the central control module selects Bi as the constant-current charging initial current and selects cj as the temperature-to-initial-current adjusting parameter, j =1,2,3,4, and the central control module adjusts the charging current to be Bi ', Bi' = Bi × cj.
3. The lead-acid battery charger according to claim 2, wherein when the charger charges the battery with the current Bi ' and passes through the constant-current charging voltage detection time period T1, the output terminal interface detects the voltage a1 across the charging battery and transmits the detection result to the central control module, and the central control module calculates the ratio E ' of the voltage a1 across the battery to the full-charge voltage Ai of the battery and compares the E ' with the E1:
when E' > E1, the central control module adjusts the charging mode to the D2 mode;
when the E 'is less than or equal to E1, the central control module continues to use D1 as a charging mode and repeats the charging operation of the battery with the current Bi', detects the voltage a1 at the two ends of the battery again when the constant-current charging voltage detection time length T1 passes, and calculates the ratio E 'of the voltage a1 to the full-charge voltage Ai of the battery until the E' is more than E1.
4. The lead-acid battery charger according to claim 3, wherein the central control module is further provided with a charger main body constant voltage value adjusting parameter matrix H0, the H0 comprises three charger main body constant voltage value adjusting parameters of H1, H2 and H3, wherein H1 is a first preset charger main body constant voltage value adjusting parameter, H2 is a second preset charger main body constant voltage value adjusting parameter, and H3 is a third preset charger main body constant voltage value adjusting parameter, and the parameters are sequentially increased;
for the current value difference matrix G0, G0 includes differences of four current values G1, G2, G3 and G4, where G1 is a difference of a first preset current value, G2 is a difference of a second preset current value, G3 is a difference of a third preset current value, and G4 is a difference of a fourth preset current value, and the values of the differences sequentially increase;
when the charger adopts a D2 mode to charge, the central control module controls the constant voltage value of the charger main body to be Ai ', Ai' =1.2Ai, the output end interface detects the voltage F at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the difference value F between the voltage F at two ends of the battery and the full-charge voltage Ai of the battery, F = Ai-F, the central control module calculates the theoretical current value g under the voltage difference,
k is a compensation parameter of the voltage difference to a theoretical current value, the charger main body detects an actual output current value G and transmits a detection result to the central control module, the central control module calculates a difference value delta G between the theoretical current value and the actual current value, delta G = G-G, and the central control module compares the delta G with internal parameters of a G0 matrix:
when the delta G is less than or equal to G1, the central control module judges that the state of the rechargeable battery is good and does not adjust the constant voltage value of the charger main body;
when G1 is larger than or equal to Δ G and is less than or equal to G2, the central control module judges that the storage capacity of the rechargeable battery is reduced, and selects H1 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body;
when G2 is larger than or equal to Δ G and is less than or equal to G3, the central control module judges that the storage capacity of the rechargeable battery is reduced, and selects H2 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body;
when G3 is larger than or equal to Δ G and is less than or equal to G4, the central control module judges that the storage capacity of the rechargeable battery is reduced, and selects H3 from the H0 matrix as a constant voltage value adjusting parameter of the charger main body;
when Hp is selected as a constant voltage value adjusting parameter of the charger main body, p =1,2,3, the central control module adjusts the constant voltage value of the charger main body to Ai ", Ai" = Ai '-Ai' × Hp.
5. The lead-acid battery charger according to claim 4, characterized in that when the charger is charged by using a D2 mode, the central control module calculates the true full-charge voltage Az of the rechargeable battery, Az = Ai- Δ G × K, K is a compensation parameter of the difference Δ G between a theoretical current value and an actual current value and the true full-charge voltage Az of the battery, when the charger is charged by using a D2 mode and passes through a constant-voltage charging voltage detection time period T2, the voltage a2 at two ends of the rechargeable battery is detected and the detection result is transmitted to the central control module, and the central control module calculates the ratio Ez between the voltage a2 at two ends of the rechargeable battery and the true full-charge voltage Az of the rechargeable battery and compares Ez with E2:
when Ez > E2, the central control module adjusts the charging mode to a D3 mode;
when Ez is less than or equal to E2, the central control module continues to use D2 as a charging mode and repeats the operations of detecting the voltage a2 across the rechargeable battery and calculating the ratio Ez until Ez is more than E2.
6. The lead-acid battery charger according to claim 5, characterized in that when the charger adopts D3 mode for charging and the elapsed time-dependent voltage detection time length T3 is detected, the voltage a3 across the rechargeable battery is detected and the detection result is transmitted to the central control module, and the central control module calculates the ratio Ez 'of the voltage a3 across the rechargeable battery to the true full-charge voltage Az of the rechargeable battery and compares Ez' with 1:
when Ez' is more than or equal to 1, the central control module continues to charge for a voltage detection time length T3 by taking D3 as a charging mode, judges that charging is finished and stops charging after the charging is finished, and controls the wireless communication module to send a charging completion prompt to the mobile phone of the user;
when Ez '< 1, the central control module continues with D3 as the charging mode and repeats the above operations until Ez' > 1.
7. The lead-acid battery charger according to claim 6, wherein when the central control module determines that the charging is completed and stops the charging, the central control module starts timing, and when the battery is not removed after the detection time period T4 for stopping the charging, the output terminal interface detects the voltage ax at two ends of the rechargeable battery and transmits the detection result to the central control module, the central control module calculates the ratio X of the ax to the true full electric voltage Az of the rechargeable battery,
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when X is less than 0.95, the central control module starts a charger to charge the battery according to a D3 mode,
when X is larger than or equal to 0.95, the central control module maintains the charging stopping state, the central control module starts timing, and when the battery is not removed after the charging stopping detection time period T4, the operation of detecting the voltage ax at the two ends of the rechargeable battery by the detection output end interface and calculating the ratio X of the ax to the real full-charge voltage Az of the rechargeable battery is repeated until X is smaller than 0.95 or the rechargeable battery is removed by a user.
8. The lead-acid battery charger according to claim 1, wherein for the full-battery voltage matrix a0 of the batteries to be charged, said a0 includes four full-battery voltages a1, a2, A3 and a4, a1 is a first preset full-battery voltage, a2 is a second preset full-battery voltage, A3 is a third preset full-battery voltage, and a4 is a fourth preset full-battery voltage, and the full-battery voltage values are sequentially increased;
when the charger is used for charging, a charging user selects the full-charge voltage Ai of the battery to be charged, i =1,2,3,4, the output end interface detects the voltage a at two ends of the battery to be charged and transmits the detection result to the central control module, the central control module calculates the ratio E of the voltage a at two ends of the battery to be charged and the full-charge voltage Ai of the battery and compares the E with an inner matrix of E0,
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when E is less than or equal to E1, the central control module selects D1 from the D0 matrix as a charging mode;
when E1 is more than E and less than or equal to E2, the central control module selects D2 from the D0 matrix as a charging mode;
when E > E2, the central control module selects D3 from the D0 matrix as the charging mode.
9. A method for charging a lead-acid battery, which is applied to the lead-acid battery charger according to any one of claims 1 to 8, and comprises:
firstly, a charging user connects an output end interface of a charger with a battery;
connecting the input end interface with an external power supply;
and step three, when the display screen of the charger is lightened, the user wirelessly connects the mobile phone with the charger, selects a corresponding rechargeable battery model through the mobile phone and confirms to charge.
10. The method for charging the lead-acid battery according to claim 9, wherein the charger pre-charges the battery after the user confirms that the charging is performed, determines whether the user type is correctly selected, controls the charger to charge according to the usage method of the lead-acid battery charger when the determination result is the same as the user selection result, and stops charging the charger and sends a selection error prompt to the user mobile phone through the wireless communication module when the determination result is different from the user selection result.
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| CN101110521A (en) * | 2007-08-20 | 2008-01-23 | 中兴通讯股份有限公司 | Charging device and method for nickel-hydrogen battery |
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