CN2817171Y - Storage battery constant current discharge device - Google Patents
Storage battery constant current discharge device Download PDFInfo
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- CN2817171Y CN2817171Y CN 200520024281 CN200520024281U CN2817171Y CN 2817171 Y CN2817171 Y CN 2817171Y CN 200520024281 CN200520024281 CN 200520024281 CN 200520024281 U CN200520024281 U CN 200520024281U CN 2817171 Y CN2817171 Y CN 2817171Y
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Abstract
The utility model relates to a constant current discharging device for an accumulator, which belongs to the technical field of power supply and is used for solving the problem of the precision and the interference resistance of accumulator discharge. The constant current discharging device has the technical scheme that the device is composed of an accumulator pack E, a current divider FL, a switch K, constant current regulating circuits WK1, WK2, WK3 and loads R1, R2, R3, wherein the current divider FL and the switch K are connected to a power supplying loop in series, and the constant current regulating circuits are connected with the loads R1, R2, R3 in series to form power supplying branch circuits; each branch circuit is connected with the power supplying loop in parallel, and the resistance ratio of the loads is R1: R2: R3=1: 2: 4; a constant current regulating tube adopts a high power insulated gate bipolar transistor IGBT. According to the magnitude of discharging current, the utility model can carry out arbitrary combination and implement coarse regulation by the branch circuits of the constant current regulating tube; higher discharging accuracy is obtained by a trimming circuit, and the discharging accuracy can reach 0.2 percent. The utility model also has the advantage of strong interference resistant ability.
Description
Technical field
The utility model relates to a kind of device of controlling battery discharging, belongs to the supply unit technical field.
Background technology
Storage battery is widely used in power plant, hydroelectric station, transformer station's power departments such as (institutes) as a kind of electric supply installation, also is the indispensable equipment of enterprise such as mine, metallurgy, petrochemical industry, railway.Along with development of technology, also more and more higher to battery-driven requirement, under some occasion, require storage battery can give constant-current discharge, carry out operate as normal and running to cooperate various accurate power consumption equipments.Present defectives such as ubiquity discharge constant current accuracy is low in the storage battery of the various models of capacity 100Ah～2000Ah, electric pressure 220V, 110V, 48V and specification.In addition, when adopting IGBT to make high-power switch device, because square being directly proportional of the interfering energy that IGBT produces and its chopper current, the interfering energy that high-power IGBT produces at the trailing edge of the rising edge of conducting or shutoff can be done by the equivalent capacity (5-10pF) of the former secondary of photoelectric isolating device and be incorporated into former limit, because interfering energy is bigger, on light-emitting diode, produce a peak voltage sometimes, photoelectric isolating device is misleaded or turn-off, thereby produce anomalies such as time vibration, damage high-power IGBT.Because these shortcomings of prior art particularly in the deficiency that guarantees on the constant-current discharge precision, can not satisfy users' needs, the problem that solves the storage battery constant-current discharge is the new problem that the technical staff faces.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of have precision height, easy and simple to handle, noise is low, antijamming capability is strong storage battery constant-current discharging device.
The technical scheme that addresses the above problem is:
A kind of storage battery constant-current discharging device, it is adjusted circuit WK1, WK2, WK3 and load R1, R2, R3 by batteries E, shunt FL, K switch, constant current and forms, described shunt FL and K switch are serially connected in the current supply circuit, circuit WK1 is adjusted in constant current, WK2, WK3 are concatenated into take-off circuit with load R1, R2, R3 respectively, each branch circuit is attempted by in the current supply circuit, the ratio of described load resistance is R1: R2: R3=1: 2: 4, constant current adjustment pipe WK1, WK2, WK3, WK selected the high-power insulated gate bipolar transistor IGBT for use.
Above-mentioned storage battery constant-current discharging device, described high-power insulated gate bipolar transistor IGBT is respectively equipped with drive circuit, drive circuit comprises 3 photoelectric isolating device TLP1, TLP2, TLP3 and diode D1, D2 forms, wherein, TLP1 constitutes photoelectricity and isolates input circuit, its input PWM connects the microcomputer control signal end, input the 2nd pin of its output termination TLP2, TLP2, two photoelectric isolating devices of TLP3 are formed full bridge driving circuit, their the 3rd pin connects together, the 2nd pin of TLP3 is through resistance R 12 ground connection, TLP2,6 of TLP3,7 pin connect together as output, both output is respectively through resistance R 13, R14 is connected to the G utmost point and the E utmost point of insulated gate bipolar transistor IGBT, goes back cross-over connection resistance R 15 between the G utmost point and the E utmost point, at TLP2,2 of TLP3, connect diode D1 and D2 between 3 pin respectively.
Above-mentioned storage battery constant-current discharging device is set up the fine setting branch circuit, and described fine setting branch circuit is composed in series by constant current adjustment pipe WK and load resistance R4, and it is in parallel with other branch circuit, and the resistance of resistance R 4 is greater than the resistance of R3.
Above-mentioned storage battery constant-current discharging device connects voltage-stabiliser tube Z1, the Z2 that connects between the G of the insulated gate bipolar transistor IGBT utmost point and the E utmost point.
Above-mentioned storage battery constant-current discharging device is connected to the resistance R of series connection, the resistance capaciting absorpting circuit that capacitor C is formed between the C of the insulated gate bipolar transistor IGBT utmost point and the E utmost point.
The utility model adopts the IGBT device to carry out copped wave control, realizes the Automatic Control of storage battery constant-current discharge.Characteristics such as it combines high-power switch device with system controlled by computer, have the precision height, and easy and simple to handle, noise is low, and antijamming capability is strong.Adopt the storage battery constant-current discharging device of this structure, can carry out combinations matches arbitrarily by constant current adjustment pipe WK1, WK2, WK3 according to the size of discharging current, size to discharging current is implemented coarse adjustment, is finely tuned to improve the discharge precision by WK again, and the discharge precision can reach 0.2%.Constant current is adjusted high-power insulated gate bipolar transistor IGBT in the pipe and drive circuit thereof and can be avoided photoelectric isolating device to mislead or turn-off, and can not produce anomaly such as time vibration and damages the high-power insulated gate bipolar transistor IGBT.Can be applicable to all kinds of power plants, hydroelectric station, transformer station (institute), use user's (as mine, metallurgy, petrochemical industry, railway etc.) of storage battery with other, and battery manufacturer man, be applicable to capacity 100Ah---4000Ah, the various models of electric pressure 220V, 110V, 48V and the storage battery of specification.
Description of drawings
Fig. 1 is a main circuit schematic diagram of the present utility model;
Fig. 2 is the drive circuit electrical schematic diagram (being the WK～WK3 electrical schematic diagram among Fig. 1) of insulated gate bipolar transistor IGBT.
Embodiment
As seen from Figure 1, the utility model is made up of batteries E, shunt FL, constant current adjustment pipe WK1, WK2, WK3, WK, mains switch K, electric capacity and resistance.Shunt FL is used to provide the loop current control signal to computer, and mains switch K is used for the break-make of control circuit.The branch circuit (also more branch circuit can be set certainly) that constant current adjustment pipe WK1, WK2, WK3, WK constitute is in parallel, by storage battery power supply, capacitor C and resistance R are formed resistance capaciting absorpting circuit, are connected across the two ends of constant current adjustment pipe WK1, WK2, WK3, WK.Resistance R 1, R2, R3 are discharge load resistance, and by constant current adjustment pipe WK1, WK2, WK3, WK control, the resistance of resistance R 1, R2, R3 disposes by 1: 2: 4 rule, when they make up, can have 8 kinds of patterns selective respectively.Each constant current adjustment pipe WK1, WK2, WK3, WK branch circuit also are connected with computer, and the detailed process that electric current is adjusted is by computer control.
Constant current adjustment pipe WK1, WK2, WK3, WK select the high-power insulated gate bipolar transistor IGBT for use, and each IGBT has drive circuit separately.
Drive circuit comprises 3 photoelectric isolating device TLP1, TLP2, TLP3, diode D1, D2, resistance R 10～R14, voltage-stabiliser tube Z1, Z2.
The utility model constant current adjustment pipe WK1, WK2, WK3 when work can carry out combination in any according to the size of required electric current, its combination has 8 kinds of patterns, these combinations are implemented coarse adjustment to the size of discharging current, constant current adjustment pipe WK can finely tune, to improve the discharge precision, the discharge precision can reach 0.2%.
The driving process of insulated gate bipolar transistor IGBT is as follows:
The forward drive process: when the pwm signal that is sent by computer was low level, 2 pin of TLP1 produced drive current to 3 pin, 6 pin of TLP1 and 7 pin output high level, electric current through 2 pin of TLP2 to 3 pin, again through D2 and R3 to VSS; For 2 pin of TLP3 to 3 pin, applied the reverse cut-ff voltage of a 0.6V, thereby 6 pin of TLP2 and 7 pin output high level, 6 pin of TLP3 and 7 pin output low levels, between the grid (GE) of LGBT, apply forward 15V driving voltage through resistance R 4, thereby the IGBT conducting, output low level.
Reverse turn off process: when pwm signal was high level, 2 pin of TLP1 did not have drive current to 3 pin, 6 pin of TLP1 and 7 pin output low levels, electric current by+12V through 2 pin and 3 pin of R2 to TLP3, again through 6 pin of D1 and TLP1 and 7 pin to VSS; 2 pin of TLP2 to 3 pin, have been applied the reverse cut-ff voltage of a 0.6V, 6 pin of TLP2 and 7 pin output low levels, 6 pin of TLP3 and 7 pin output high level, apply reverse 15V shutoff voltage through resistance R 5 and R4 between the grid (GE) at IGBT, IGBT turn-offs, the output high level.
Because TLP2, TLP3 and the design of related device symmetric configuration, 3 pin of TLP2, TLP3 are connected together, when the equivalent capacity of interfering energy by TLP2, the former secondary of TLP3 was coupled to former limit, the peak voltage major part of generation can be cancelled out each other, and had avoided photoelectric isolating device to mislead or turn-offed.
Claims (5)
1. storage battery constant-current discharging device, it is characterized in that: it is adjusted circuit WK1, WK2, WK3 and load R1, R2, R3 by batteries E, shunt FL, K switch, constant current and forms, described shunt FL and K switch are serially connected in the current supply circuit, circuit WK1 is adjusted in constant current, WK2, WK3 are concatenated into take-off circuit with load R1, R2, R3 respectively, each branch circuit is attempted by in the current supply circuit, the ratio of described load resistance is R1: R2: R3=1: 2: 4, constant current adjustment pipe WK1, WK2, WK3, WK selected the high-power insulated gate bipolar transistor IGBT for use.
2. storage battery constant-current discharging device according to claim 1, it is characterized in that: described high-power insulated gate bipolar transistor IGBT is respectively equipped with drive circuit, drive circuit comprises 3 photoelectric isolating device TLP1, TLP2, TLP3 and diode D1, D2 forms, wherein, TLP1 constitutes photoelectricity and isolates input circuit, its input PWM connects the microcomputer control signal end, input the 2nd pin of its output termination TLP2, TLP2, two photoelectric isolating devices of TLP3 are formed full bridge driving circuit, their the 3rd pin connects together, the 2nd pin of TLP3 is through resistance R 12 ground connection, TLP2,6 of TLP3,7 pin connect together as output, both output is respectively through resistance R 13, R14 is connected to the G utmost point and the E utmost point of insulated gate bipolar transistor IGBT, between the G utmost point and the E utmost point, go back cross-over connection resistance R 15, at TLP2,2 of TLP3, connect diode D1 and D2 between 3 pin respectively.
3. storage battery constant-current discharging device according to claim 1 and 2, it is characterized in that: set up the fine setting branch circuit, described fine setting branch circuit is composed in series by constant current adjustment pipe WK and load resistance R4, and it is in parallel with other branch circuit, and the resistance of resistance R 4 is greater than the resistance of R3.
4. storage battery constant-current discharging device according to claim 3 is characterized in that: the voltage-stabiliser tube Z1, the Z2 that connect series connection between the G of the insulated gate bipolar transistor IGBT utmost point and the E utmost point.
5. storage battery constant-current discharging device according to claim 4 is characterized in that: be connected to the resistance R of series connection, the resistance capaciting absorpting circuit that capacitor C is formed between the C of the insulated gate bipolar transistor IGBT utmost point and the E utmost point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024281 CN2817171Y (en) | 2005-06-15 | 2005-06-15 | Storage battery constant current discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024281 CN2817171Y (en) | 2005-06-15 | 2005-06-15 | Storage battery constant current discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2817171Y true CN2817171Y (en) | 2006-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520024281 Expired - Fee Related CN2817171Y (en) | 2005-06-15 | 2005-06-15 | Storage battery constant current discharge device |
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| Country | Link |
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| CN (1) | CN2817171Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565936A (en) * | 2018-06-27 | 2018-09-21 | 广东电网有限责任公司 | A kind of pure direct-flow storage battery Electrical Discharge Machine and its control method |
| WO2021030934A1 (en) * | 2019-08-16 | 2021-02-25 | 华为技术有限公司 | Battery pack, battery current measurement circuit system, and battery current measurement apparatus |
-
2005
- 2005-06-15 CN CN 200520024281 patent/CN2817171Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565936A (en) * | 2018-06-27 | 2018-09-21 | 广东电网有限责任公司 | A kind of pure direct-flow storage battery Electrical Discharge Machine and its control method |
| WO2021030934A1 (en) * | 2019-08-16 | 2021-02-25 | 华为技术有限公司 | Battery pack, battery current measurement circuit system, and battery current measurement apparatus |
| CN113169385A (en) * | 2019-08-16 | 2021-07-23 | 华为技术有限公司 | Battery pack, circuit system for measuring battery current and equipment for measuring battery current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |