CN112952970A - Portable battery equalization repairing device based on isolated power supply - Google Patents
Portable battery equalization repairing device based on isolated power supply Download PDFInfo
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- 239000000178 monomer Substances 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 66
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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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
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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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
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- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a portable battery equalization restorer based on an isolated power supply, which comprises an isolated power supply ACDC conversion module, a DCDC step-down output and current limiting module, a monomer voltage acquisition module, an equalization current acquisition module and a connector cascade switching module; the isolated power supply ACDC conversion module is respectively connected with a connector cascade switching module and a DCDC step-down output and current limiting module, and the DCDC step-down output and current limiting module is respectively connected with the monomer voltage acquisition module and the balance current acquisition module. The portable battery equalization restorer is low in cost, high in efficiency and small in size and portability, is used for small and medium-sized companies and other special occasions after research, development and debugging, and has great significance for research, development and cost reduction after sale.
Description
Technical Field
The invention relates to the technical field of battery simulators and power supply design, in particular to a portable battery equalization restorer based on an isolated power supply.
Background
With the popularization of electric automobiles, more batteries and battery management systems are increasingly needed, battery balance repair needed by BMS development and battery after-sale maintenance is related, large-scale battery repair is purchased without capital capacity for numerous small and medium-sized enterprises, and a new portable battery balance repair device is urgently needed in research, development, debugging and use scenes.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a portable battery equalization restorer based on an isolated power supply, which has the following specific scheme:
a portable battery equalization restorer based on an isolated power supply comprises an isolated power supply ACDC conversion module, a DCDC step-down output and current limiting module, a single voltage acquisition module, an equalization current acquisition module and a connector cascade switching module;
the isolated power supply ACDC conversion module is respectively connected with a connector cascade switching module and a DCDC step-down output and current limiting module, and the DCDC step-down output and current limiting module is respectively connected with the monomer voltage acquisition module and the balance current acquisition module.
Specifically, the isolated power supply ACDC conversion module comprises a power supply conversion chip U, a capacitor C12, a common-mode inductor L3, a fuse F1, a piezoresistor RV1 and a pi-type filter circuit, wherein an input end L and an input end N of the power supply conversion chip U are connected through the capacitor C12, two input ends of the common-mode inductor L3 are respectively connected with the input end L and the input end N, an output end corresponding to the input end N is connected with one end of the piezoresistor RV1 after passing through the fuse F1, and an output end corresponding to the input end L is connected with the other end of the piezoresistor RV 1; both ends of the varistor RV1 are connected to an external circuit through a terminal P1; the pi-type filter circuit comprises a capacitor C8, a capacitor C5 and a capacitor C6 which are connected in parallel with two output ends of a power supply conversion chip U, wherein a positive output end of the power supply conversion chip U is used as a positive output end of an isolated power supply ACDC conversion module through an inductor L2, a negative output end of the power supply conversion chip U is used as a negative output end AGND of the isolated power supply ACDC conversion module, and the positive output end and the negative output end of the isolated power supply ACDC conversion module are connected in parallel and are connected with one another through a capacitor C7 and a capacitor C9.
Specifically, the model of the power conversion chip U is ACDC-5V-2A.
Specifically, the ports of the connector cascade adapter module are correspondingly connected with two ends of the terminal P1, and are used for providing 220V alternating current for the circuit board connected to the connector cascade adapter module.
Specifically, the DCDC buck output and current limiting module comprises a buck circuit and a current limiting circuit, wherein the buck circuit comprises a power processing chip U1, a resistor R2, a capacitor C4, a capacitor C10, a field effect transistor Q1, a schottky diode D3, an inductor L1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, a schottky diode D1, a resistor R4, a capacitor C11 and an adjustable rotating resistor R; two ends of the capacitor C10 are connected between the 8 th pin and the 2 nd pin of the power processing chip U1, and the 2 nd pin and the 6 th pin are both connected with a negative output end, namely ground AGND; a 5 th pin of a power processing chip U1 is connected with a positive output end 5V of an isolated power ACDC conversion module through a resistor R2 and a capacitor C4 which are connected in parallel, a source of a field effect transistor Q1 is connected with the positive output end 5V, a gate of the field effect transistor Q1 is connected with a 7 th pin of the power processing chip U1, a drain of the field effect transistor Q1 is connected with a1 st pin of the power processing chip U1, the source and the gate of the field effect transistor U1 are connected through a resistor R1, the drain of the field effect transistor Q1 is connected with ground AGND through a Schottky diode D3 and is connected with a terminal BT1 of the positive output end through an inductor L1 and a Schottky diode D1 in sequence, an output end of an inductor L1 is further connected with ground AGND through a diode D2 and a resistor R3 in sequence, is connected with ground AGND through a capacitor C1, a capacitor C8 and a capacitor C3 which are connected in parallel; the 4 th pin is connected with an adjusting end of the adjustable rotating resistor, and one end of the other two ends of the adjustable rotating resistor is connected with ground AGND.
Specifically, the model of the power supply processing chip U1 is LM3485.
Specifically, the single voltage acquisition module comprises a nixie tube voltmeter DS1, and power supply ends of the nixie tube voltmeter DS1 are correspondingly connected with a power supply 5V and a terminal BT 1.
Specifically, the current limiting circuit comprises a current limiting chip U2, a resistor Rfb1, a capacitor C13 and a capacitor C14, wherein the capacitor C13 and the resistor Rfb1 are connected in parallel between a No. 3 pin and a No. 4 pin, the No. 3 pin is connected with a negative output end GND-VBAT corresponding to a terminal BT1, and the No. 4 pin is connected with ground AGND; the 2 nd pin is also connected with ground AGND, the 5 th pin is connected with a power supply 5V and is connected with ground AGND through a capacitor C14, and the 1 st pin is used as an output end of a current limiting circuit after passing through a diode D4 and is connected with the 4 th pin of a power supply processing chip U1.
Specifically, the current limiting chip U2 is INA180A 2.
Specifically, the equalizing current collecting module comprises a nixie tube ammeter DS2, and a power supply end of the nixie tube ammeter DS2 is correspondingly connected with a power supply 5V and a 4 th pin of a power supply processing chip U1.
The invention has the beneficial effects that:
(1) the 220V mains supply is adopted for power supply, the adjustable power compensation cut-off voltage and monomer voltage display, the current limiting and current display are realized, and the function of balanced power compensation for a plurality of strings of batteries is realized (the power compensation process adopts two-stage charging, constant current first and constant voltage second). The portable emergency power supply device is small in size, low in cost, convenient to carry, convenient and fast to power supply, convenient to carry, and extremely suitable for emergency project debugging and special occasions such as BMS related product rack testing, BMS offline detection, after-sale maintenance batteries and balance maintenance of second-hand batteries.
(2) The isolated power supply ACDC conversion module converts 220V alternating current AC into 5V direct current DC, and the driving capability is 2A. The input of the AC power supply adopts a power supply which is formed by combining a common-mode inductor, a fuse, a piezoresistor and the like and can protect and filter the circuit, thereby improving the input and the protection. The DC end output passes through a pi-shaped filter circuit, and the performance of 5V direct current output emc is improved.
(3) The LM3485 used by the power supply processing chip has the functions of inputting 5VUSB voltage and outputting 1.28-5V adjustable voltage, the output current capability can reach 3A, and the output voltage is regulated by adopting an adjustable resistor. The charging current limiting adopts a current operational amplifier to amplify the voltage division on the resistor of 20m omega by 50 times, the output amplified voltage is fed back to the FB pin of the LM3485, thereby playing the role of a current limiting closed loop, and the current value is about 1.5A.
(4) The monomer voltage acquisition display module that this application used is supplied power by 5V, and it is direct continuous with the output battery to gather the end, but real-time observation monomer battery voltage.
(5) The balanced current collection module that this application used is supplied power by 5V, gathers the end and directly links to each other with current collection amplifier output, but real-time observation output current size, and the current value is 0.02 × 50 × I, unit A.
(6) The connector cascade switching module used by the application can realize monomer cascade by mutual opposite insertion without monomer sequence, and in addition, the balanced restorer of all batteries can be driven by only one AC-220V power supply.
(7) The portable battery equalization restorer is low in cost, high in efficiency and small in size and portability, is used for small and medium-sized companies and other special occasions after research, development and debugging, and has great significance for research, development and cost reduction after sale.
Drawings
Fig. 1 is an overall circuit diagram of a prosthetic device according to the present invention.
Fig. 2 is a circuit diagram of an isolated power ACDC conversion module of the repairer.
Fig. 3 is a circuit diagram of a voltage reduction circuit and a cell voltage acquisition module in the DCDC voltage reduction output and current limiting module of the repair device.
Fig. 4 is a current limiting circuit diagram and an equalizing current collecting module diagram in the DCDC step-down output and current limiting module of the repairing device.
Fig. 5 is a circuit diagram of the connector cascade patching module of the repairer.
Detailed Description
Referring to fig. 1, the invention provides a portable battery equalization restorer based on an isolated power supply, which comprises an isolated power supply ACDC conversion module, a DCDC step-down output and current limiting module, a single voltage acquisition module, an equalization current acquisition module and a connector cascade switching module. In this embodiment, the isolated power supply is of the type HLK-10M 05.
As shown in fig. 2, the isolated power ACDC conversion module includes a power conversion chip U, a capacitor C12, a common mode inductor L3, a fuse F1, a voltage dependent resistor RV1, and a pi filter circuit, in this embodiment, the power conversion chip U is of an ACDC-5V-2A type, an input end L and an input end N of the power conversion chip U are connected through the capacitor C12, two input ends of the common mode inductor L3 are respectively connected with the input end L and the input end N, an output end corresponding to the input end N is connected with one end of the voltage dependent resistor RV1 after passing through the fuse F1, and an output end corresponding to the input end L is connected with the other end of the voltage dependent resistor RV 1. Both ends of the varistor RV1 are connected to an external circuit through a terminal P1. The pi-type filter circuit comprises a capacitor C8, a capacitor C5 and a capacitor C6 which are connected in parallel with two output ends of a power conversion chip U, wherein a positive output end of the power conversion chip U is used as a positive output end 5V of an isolated power ACDC conversion module through an inductor L2, a negative output end of the power conversion chip U is used as a negative output end AGND of the isolated power ACDC conversion module, and the positive output end and the negative output end of the isolated power ACDC conversion module are connected in parallel and are connected with one another through a capacitor C7 and a capacitor C9.
As shown in fig. 5, the ports of the connector cascade adapter module are connected to the two ends of the terminal P1, and are used for providing 220V ac power to the circuit board connected to the connector cascade adapter module.
The DCDC buck output and current limiting module comprises a buck circuit and a current limiting circuit, as shown in fig. 3, the buck circuit comprises a power processing chip U1, a resistor R2, a capacitor C4, a capacitor C10, a field effect transistor Q1, a schottky diode D3, an inductor L1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, a schottky diode D1, a resistor R4, a capacitor C11, and an adjustable rotating resistor R. In this embodiment, the model of the power processing chip U1 is lm3485, two ends of the capacitor C10 are connected between the 8 th pin and the 2 nd pin of the power processing chip U1, and the 2 nd pin and the 6 th pin are both connected to the negative output terminal, i.e., ground AGND. The 5 th pin of the power processing chip U1 is connected with the 5V positive output end of the ACDC conversion module through a resistor R2 and a capacitor C4 which are connected in parallel, the source of a field effect transistor Q1 is connected with the 5V positive output end, the gate of the field effect transistor Q1 is connected with the 7 th pin of the power processing chip U1, the drain of the field effect transistor U1 is connected with the 1 st pin, the source of the field effect transistor U1 is connected with the gate of the power processing chip U1 through a resistor R1, the drain of the field effect transistor Q1 is connected with ground AGND through a Schottky diode D3 and is connected with the terminal BT1 of the positive output end through an inductor L1 and a Schottky diode D1 in sequence, the output end of an inductor L1 is further connected with ground AGND through a diode D2 and a resistor R3 in sequence, connected with the 4 th pin of the power processing chip U1 through a capacitor C1, a capacitor C7378 and a capacitor C737. The 4 th pin is connected with the adjusting end of the adjustable rotating resistor, one end of the other two ends of the adjustable rotating resistor is connected with ground AGND, and the other end of the adjustable rotating resistor is suspended. In order to measure the adjusted voltage value, the single voltage acquisition module comprises a digital tube voltmeter DS1, and power supply ends of the digital tube voltmeter DS1 are correspondingly connected with a power supply 5V and a terminal BT 1.
As shown in fig. 4, the current limiting circuit includes a current limiting chip U2, a resistor Rfb1, a capacitor C13, and a capacitor C14, where the model of the current limiting chip U2 is INA180a2, a capacitor C13 and a resistor Rfb1 are connected in parallel between A3 rd pin and a 4 th pin, the 3 rd pin is connected to a negative output terminal GND-VBAT corresponding to the terminal BT1, and the 4 th pin is connected to ground AGND. The 2 nd pin is also connected with ground AGND, the 5 th pin is connected with a power supply 5V and is connected with ground AGND through a capacitor C14, and the 1 st pin is used as an output end of a current limiting circuit after passing through a diode D4 and is connected with the 4 th pin of a power supply processing chip U1. In order to measure the adjusted current value, the equalizing current collecting module comprises a nixie tube ammeter DS2, and a power supply end of the nixie tube ammeter DS2 is correspondingly connected with a power supply 5V and a 4 th pin of a power supply processing chip U1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A portable battery equalization restorer based on an isolated power supply is characterized by comprising an isolated power supply ACDC conversion module, a DCDC step-down output and current limiting module, a monomer voltage acquisition module, an equalization current acquisition module and a connector cascade connection switching module;
the isolated power supply ACDC conversion module is respectively connected with a connector cascade switching module and a DCDC step-down output and current limiting module, and the DCDC step-down output and current limiting module is respectively connected with the monomer voltage acquisition module and the balance current acquisition module.
2. The isolated power supply-based portable battery equalization restorer of claim 1, wherein the isolated power supply ACDC conversion module comprises a power supply conversion chip U, a capacitor C12, a common mode inductor L3, a fuse F1, a piezoresistor RV1 and a pi-type filter circuit, an input end L and an input end N of the power supply conversion chip U are connected through a capacitor C12, two input ends of the common mode inductor L3 are respectively connected with the input end L and the input end N, an output end corresponding to the input end N is connected with one end of a piezoresistor RV1 after passing through a fuse F1, and an output end corresponding to the input end L is connected with the other end of a piezoresistor RV 1; both ends of the varistor RV1 are connected to an external circuit through a terminal P1; the pi-type filter circuit comprises a capacitor C8, a capacitor C5 and a capacitor C6 which are connected in parallel with two output ends of a power supply conversion chip U, wherein a positive output end of the power supply conversion chip U is used as a positive output end of an isolated power supply ACDC conversion module through an inductor L2, a negative output end of the power supply conversion chip U is used as a negative output end AGND of the isolated power supply ACDC conversion module, and the positive output end and the negative output end of the isolated power supply ACDC conversion module are connected in parallel and are connected with one another through a capacitor C7 and a capacitor C9.
3. The isolated power supply-based portable battery equalization restorer of claim 1, wherein the power conversion chip U is ACDC-5V-2A in model number.
4. The isolated power supply-based portable battery equalization repair device according to claim 1, wherein the ports of the connector cascade connection switching module are correspondingly connected with two ends of a terminal P1, and are used for providing 220V alternating current for a circuit board connected to the connector cascade connection switching module.
5. The isolated power supply-based portable battery equalization repair device of claim 1, wherein the DCDC buck output and current limiting module comprises a buck circuit and a current limiting circuit, the buck circuit comprises a power supply processing chip U1, a resistor R2, a capacitor C4, a capacitor C10, a field effect transistor Q1, a schottky diode D3, an inductor L1, a diode D2, a capacitor C1, a capacitor C2, a capacitor C3, a schottky diode D1, a resistor R4, a capacitor C11, an adjustable rotation resistor R; two ends of the capacitor C10 are connected between the 8 th pin and the 2 nd pin of the power processing chip U1, and the 2 nd pin and the 6 th pin are both connected with a negative output end, namely ground AGND; a 5 th pin of a power processing chip U1 is connected with a positive output end 5V of an isolated power ACDC conversion module through a resistor R2 and a capacitor C4 which are connected in parallel, a source of a field effect transistor Q1 is connected with the positive output end 5V, a gate of the field effect transistor Q1 is connected with a 7 th pin of the power processing chip U1, a drain of the field effect transistor Q1 is connected with a1 st pin of the power processing chip U1, the source and the gate of the field effect transistor U1 are connected through a resistor R1, the drain of the field effect transistor Q1 is connected with ground AGND through a Schottky diode D3 and is connected with a terminal BT1 of the positive output end through an inductor L1 and a Schottky diode D1 in sequence, an output end of an inductor L1 is further connected with ground AGND through a diode D2 and a resistor R3 in sequence, is connected with ground AGND through a capacitor C1, a capacitor C8 and a capacitor C3 which are connected in parallel; the 4 th pin is connected with the adjusting end of the adjustable rotating resistor, one end of the other two ends of the adjustable rotating resistor is connected with ground AGND, and the other end of the adjustable rotating resistor is suspended.
6. The isolated power supply-based portable battery equalization repair device according to claim 5, wherein the power supply processing chip U1 is LM3485 model.
7. The isolated power supply-based portable battery equalization repair device of claim 6, wherein the cell voltage acquisition module comprises a nixie tube voltmeter DS1, and power supply ends of the nixie tube voltmeter DS1 are respectively connected with a power supply 5V and a terminal BT 1.
8. The isolated power supply-based portable battery equalization repair device of claim 5, wherein the current limiting circuit comprises a current limiting chip U2, a resistor Rfb1, a capacitor C13 and a capacitor C14, wherein the capacitor C13 and the resistor Rfb1 are connected in parallel between a pin 3 and a pin 4, the pin 3 is connected with a negative output end GND-VBAT corresponding to a terminal BT1, and the pin 4 is connected with ground AGND; the 2 nd pin is also connected with ground AGND, the 5 th pin is connected with a power supply 5V and is connected with ground AGND through a capacitor C14, and the 1 st pin is used as an output end of a current limiting circuit after passing through a diode D4 and is connected with the 4 th pin of a power supply processing chip U1.
9. The isolated power supply-based portable battery equalization repair device of claim 8, wherein the current limiting chip U2 is type INA180A 2.
10. The isolated power supply-based portable battery equalization repair device according to claim 5, wherein the equalization current collection module comprises a nixie tube ammeter DS2, and a power supply end of the nixie tube ammeter DS2 is correspondingly connected with a 5V power supply and a 4 th pin of a power supply processing chip U1.
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| CN202110160501.6A CN112952970A (en) | 2021-02-05 | 2021-02-05 | Portable battery equalization repairing device based on isolated power supply |
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| CN202110160501.6A CN112952970A (en) | 2021-02-05 | 2021-02-05 | Portable battery equalization repairing device based on isolated power supply |
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