CN102403752A - Discharging control circuit for storage battery and control method thereof - Google Patents
Discharging control circuit for storage battery and control method thereof Download PDFInfo
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- CN102403752A CN102403752A CN2011100904816A CN201110090481A CN102403752A CN 102403752 A CN102403752 A CN 102403752A CN 2011100904816 A CN2011100904816 A CN 2011100904816A CN 201110090481 A CN201110090481 A CN 201110090481A CN 102403752 A CN102403752 A CN 102403752A
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- storage battery
- discharging
- electronic switching
- switching tube
- current
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Abstract
The invention relates to a discharging control circuit for a storage battery and a control method thereof, and is particularly a technical proposal which is suitable for testing an internal resistance of the storage battery by a direct-current discharging method. The proposal overcomes the defect that the discharging for the storage battery is controlled by a relay or a single electronic switch to test the internal resistance. The discharging control circuit for the storage battery is arranged in a main loop of storage battery discharging current, a load of a resistor is in series connected with two power electronic switch tubes which are connected in parallel; and then the other end of the resistor and the other ends of the electronic switches which are connected in parallel are connected to positive and negative electrodes of the storage battery. Under the control of a gate pole control signal, the two electronic switches are alternatively switched on and off to work under a zero-switch state, so that continuous current discharging of the storage battery is achieved, thus higher reliability is provided for a test device which tests the internal resistance of the storage battery using the direct-current charging method.
Description
Technical field: the present invention relates to a kind of battery discharging control circuit and control method thereof, is to be particularly suitable for a kind of technical scheme that the direct-current discharge method is surveyed accumulator internal resistance.
Background technology: the charge/discharge control circuit that present known direct-current discharge method is surveyed accumulator internal resistance has two kinds; The one, relay of ohmic load serial connection in the major loop of discharge; The 2nd, electronic switch of ohmic load serial connection; Like MOSFET pipe or IGBT pipe, control the discharge of storage battery through the break-make of control relay or electronic switch.Use the charging method of relay; Its advantage is in the discharge time in several seconds; Discharging current is continuous, shortcoming be since discharging current very big (40A～80A) is along with the increase of discharge time; The inner contact of relay can be damaged, and the increase of contact resistance can influence the precision of measurement result; Limited actuating of relay number of times has reduced the useful life of the internal resistance measurement equipment that uses this charging method manufacturing.Use the charging method of single electron switch, its advantage is that the electronic switch life-span is longer than relay, and shortcoming is that electronic switch is in continuous break-make in several seconds discharge time; On the one hand, discharging current is discontinuous, therefore before the voltage and current Acquisition Circuit; Need the designed filters circuit, on the other hand, during the big electric current of electronic switch break-make; Need complicated absorption circuit, and the switching loss of device need increase heat dissipation element, like radiator and fan; This method not only cost is high, has also reduced the reliability of measuring equipment.
Summary of the invention: the present invention has adopted the bielectron switch, and adopts zero switch control technology, has realized the continuity of discharging current on the one hand, has realized the zero loss switch of electronic switch on the other hand.The advantage that had both kept the relay electric discharge has overcome the shortcoming of single electron switch again, and the reliability of measuring equipment and useful life are improved greatly.
The technical scheme that the present invention adopted is: in the major loop of battery discharging electric current; Ohmic load and two power electronic switching pipes that are connected in parallel are connected in series, and then the other end of resistance and the other end of the electronic switching tube of parallel connection are connected to the both positive and negative polarity of storage battery.Under the control of gate pole control signal, when first electronic switching tube conducting, second electronic switching tube is open-minded; After second electronic switching tube conducting, first electronic switching tube turn-offs, during second electronic switching tube conducting; First electronic switching tube is open-minded, and after first electronic switching tube conducting, second electronic switching tube turn-offs; Promptly two electronic switch alternation switch work under zero on off state realize the continuous current discharge of storage battery.
Description of drawings: further specify below in conjunction with accompanying drawing and embodiment.
Accompanying drawing is circuit theory diagrams of the present invention.
In the accompanying drawing, B is a storage battery, and R is a load resistance, and M1 and M2 are two power MOSFET tubes that are connected in parallel, and D is their drain electrode, and E is their source electrode, and G1 and G2 are respectively the base control signal of M1 and M2.
Embodiment: in the major loop of the discharging current of storage battery B; The end of ohmic load R is connected with the drain D of two power MOSFET tube M1 that are connected in parallel and M2, and the MOSFET pipe M1 of the other end of ohmic load R and parallel connection and the source electrode E of M2 are connected respectively to the both positive and negative polarity of storage battery B.Under the control of gate pole control signal G1 and G2, when the conducting of M1 pipe, the M2 pipe is open-minded, and after the M2 pipe was opened, M1 managed shutoff; When the conducting of M2 pipe, the M1 pipe is open-minded, and after the M1 pipe was opened, M2 manage shutoff, and promptly two power MOSFET tube M1 and M2 alternation switch work under zero on off state have realized the current discharge that storage battery is continuous.
Claims (1)
1. in the major loop of battery discharging electric current, two power electronic switching pipes that are connected in parallel are arranged; Under the control of gate pole control signal, when first electronic switching tube conducting, second electronic switching tube is open-minded, and after second electronic switching tube conducting, first electronic switching tube turn-offs; When second electronic switching tube conducting, first electronic switching tube is open-minded, and after first electronic switching tube conducting, second electronic switching tube turn-offs, and promptly two electronic switching tube alternation switch work under zero switch power consumption realize the continuous current discharge of storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100904816A CN102403752A (en) | 2011-04-12 | 2011-04-12 | Discharging control circuit for storage battery and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100904816A CN102403752A (en) | 2011-04-12 | 2011-04-12 | Discharging control circuit for storage battery and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102403752A true CN102403752A (en) | 2012-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100904816A Pending CN102403752A (en) | 2011-04-12 | 2011-04-12 | Discharging control circuit for storage battery and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102403752A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777145A (en) * | 2013-02-27 | 2014-05-07 | 王晓秋 | Storage battery intelligent monitoring and maintenance apparatus with functions of testing voltage and load discharge |
| WO2016078078A1 (en) * | 2014-11-19 | 2016-05-26 | 纽福克斯光电科技（上海）有限公司 | Charger system for battery starting current test |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327276A (en) * | 2000-06-02 | 2001-12-19 | 索尼株式会社 | Battery group |
| CN1841874A (en) * | 2005-03-18 | 2006-10-04 | 株式会社理光 | Power switching circuit |
| US20070108959A1 (en) * | 2005-11-15 | 2007-05-17 | Toyota Jidosha Kabushiki Kaisha | Power supply control device and precharge processing method |
-
2011
- 2011-04-12 CN CN2011100904816A patent/CN102403752A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327276A (en) * | 2000-06-02 | 2001-12-19 | 索尼株式会社 | Battery group |
| CN1841874A (en) * | 2005-03-18 | 2006-10-04 | 株式会社理光 | Power switching circuit |
| US20070108959A1 (en) * | 2005-11-15 | 2007-05-17 | Toyota Jidosha Kabushiki Kaisha | Power supply control device and precharge processing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777145A (en) * | 2013-02-27 | 2014-05-07 | 王晓秋 | Storage battery intelligent monitoring and maintenance apparatus with functions of testing voltage and load discharge |
| WO2016078078A1 (en) * | 2014-11-19 | 2016-05-26 | 纽福克斯光电科技（上海）有限公司 | Charger system for battery starting current test |
| US9977089B2 (en) | 2014-11-19 | 2018-05-22 | New Focus Lighting & Power Technology (Shanghai) Co., Ltd. | Charger system for battery starting current test |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |