CN2593442Y - Battery constant current charging-discharging apparatus - Google Patents
Battery constant current charging-discharging apparatus Download PDFInfo
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- CN2593442Y CN2593442Y CN 02250219 CN02250219U CN2593442Y CN 2593442 Y CN2593442 Y CN 2593442Y CN 02250219 CN02250219 CN 02250219 CN 02250219 U CN02250219 U CN 02250219U CN 2593442 Y CN2593442 Y CN 2593442Y
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- circuit
- battery
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Abstract
The utility model relates to a battery constant current charge-discharge apparatus which has the structural characteristics that the utility model comprises current supply 1, a constant current control circuit 2, a charge circuit 3, a discharge circuit 4, and a sample circuit 5, wherein, two input ends of the constant current control circuit 2 are respectively connected with the output ends of the constant current supply 1 and the sample circuit 5, the output end of the constant current control circuit 2 is connected with control ends of the charge circuit 3 and the discharge circuit 4, the output end of the charge circuit 3 and the input end of the discharge circuit 4 are respectively connected with the positive and the negative poles of a battery 6, and the input end of the sample circuit 5 is connected with the output end of a battery 7. The utility model adopts a field-effect tube as a charge and discharge power tube, and adopts integrated amplification chips to form an electronic control circuit. The utility model overcomes the disadvantages of easy damage, large noise, low efficiency, low circuit reliability of a relay, and has the advantages of high stability, no noise, high work efficiency, and safety.
Description
Affiliated technical field
The utility model relates to battery constant current charge-discharge device, belongs to the electric detective technology field.Be applicable to the changing into of Ni-MH battery, nickel-cadmium cell, liquid lithium ionic cell and polymer Li-ion battery, detection and charge and discharge process.
Background technology
Battery change into detection system and various battery charger in, battery constant current charge-discharge circuit is to be related to the key component that can whole system reliably working.Can directly influence the quality that changes into of battery, the accuracy of battery capacity test and the quality of battery performance.In various battery charging and discharging application circuits, the battery charging and discharging loop adopts following dual mode to constitute usually: 1. use triode with the pattern to pipe, promptly make the charge power pipe with the NPN pipe, make the charging and discharging circuit that the discharge power pipe forms battery with the PNP pipe at present.2. use a power tube, and switch the charging and discharging circuit of battery with relay contact.Mode advantage 1. is that circuit is simple, realize easily, but circuit power consumption is too big, and poor stability, operating efficiency is too low.Mode shortcoming 2. is that circuit noise is big, and relay contact damages when working under the big state of battery charging and discharging electric current easily, and circuit reliability is low.
Technology contents
The utility model technical issues that need to address, be have in order to overcome the prior art charge and discharge device that circuit power consumption is big, inefficiency, circuit noise are big, the shortcoming of poor reliability, and the battery constant current charge-discharge device that circuit is simple, power consumption is little, noise is little, stability is strong is provided.
Technical problem of the present utility model can solve by taking following measure: battery constant current charge-discharge device, its design feature is: comprise that electric current is given, constant-current control circuit, charging circuit, discharge circuit and sample circuit, two inputs of constant-current control circuit connect respectively that constant current is given, the output of sample circuit, the output of constant-current control circuit connects the control end of charging circuit and the control end of discharge circuit, the output of charging circuit, the input of discharge circuit connect the positive and negative electrode of battery respectively, and the input of sample circuit connects the output of battery.
Technical problem of the present utility model can also solve by following measure:
The junction of the control end of discharge circuit and the output of constant-current control circuit also is provided with drive circuit, and the input of drive circuit, output connect output, discharge circuit and the control input end of constant-current control circuit respectively.
The given positive input terminal that connects constant-current control circuit by resistance R 1 of electric current, constant-current control circuit amplifies chip IC 1 by computing and constitutes, charging circuit is formed by connecting by field effect transistor VT1 and peripheral resistance R 3 thereof, R8, discharge circuit is formed by connecting by field effect transistor VT2 and peripheral resistance R 6 thereof, R9, drive circuit is formed by connecting by triode VT3 and peripheral resistance R 4 thereof, R5, R7, sample circuit is made of resistance R 10, R10 is connected across between the negative pole and ground of battery, and R10 and the tie point of battery cathode are connected the negative input end of IC1 by resistance R 2.
The utlity model has following outstanding effect:
1, the utility model is owing to adopt field effect transistor as the power tube that discharges and recharges, and field effect transistor is much smaller with respect to the power consumption of triode, so the power consumption of circuit is very little, has the advantage of stability height, high efficiency.
2, owing to adopt integrated amplification chip to constitute electronic control circuit, therefore overcome when relay contact is worked under the big state of battery charging and discharging electric current damage easily, noise is big, efficient is low, circuit reliability is low shortcoming, have that circuit structure is simple, noiseless, efficient height, a advantage that reliability is high.
3, discharge and recharge the field effect transistor that power tube is selected same model for use, make things convenient for the buying of power tube, and the control of production process, especially when this circuit application during in big electric current (more than the 10A) charge-discharge system, advantage is more obvious.
Change into to improve battery, the performance index and the reliability of detection or charge-discharge system.
The drawing explanation
Fig. 1 is a circuit structure block diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of the utility model embodiment 1.
Preferred embodiment
Fig. 1, Fig. 2 constitute embodiment 1 of the present utility model.As can be seen from Figure 1, present embodiment comprises electric current given 1, constant-current control circuit 2, charging circuit 3, discharge circuit 4, sample circuit 5 and drive circuit 8, two inputs of constant-current control circuit 2 connect constant current given 1 respectively, the output of sample circuit 5, the output of constant-current control circuit 2 connects the control end of charging circuit 3 and connects the control end of discharge circuit 4 by drive circuit 8, the output of charging circuit 3, the input of discharge circuit 4 is just connecting battery 6 respectively, negative pole, the input of sample circuit 5 connects the output of battery 6, and the output of discharge circuit 4 connects discharge power supply 7.
As can be seen from Figure 2, present embodiment is driven triode VT3 and is formed by connecting by input resistance R1, feedback resistance R2, integrated transporting discharging IC1, gate bias resistor R3, R6, base biasing resistor R4, collector resistance R5, emitter resistance R7, pull down resistor R8, R9, current sampling resistor R10, charge power pipe VT1, discharge power pipe VT2, discharge.Vi is the given signal of charging and discharging currents (I) among the figure, one end of resistance R 1 is connected to Vi, the other end is connected to the in-phase input end of integrated transporting discharging IC1, one end of resistance R 2 is connected to the inverting input of IC1, V+ is the positive working power of IC1, V-is the negative working power of IC1, the output of IC1 and resistance R 3, R4 is connected in a point, field effect transistor VT1 and resistance R 3, R8 is connected in the b point, the other end ground connection of R8, VC is for providing the charge power supply of charging current to battery, be positive voltage, be connected to the drain electrode of VT1, the drain electrode of field effect transistor VT2 and the source electrode of VT1, the positive pole of battery BAT is connected in the e point, the other end of R4 is connected to the base stage of triode VT3, the collector electrode of VT3 and resistance R 5, R6 is connected in the c point, the other end of R5 is connected to V+, one end of resistance R 7 is connected to V-, the other end is connected to the emitter of VT3, resistance R 6, the grid of R9 and VT2 is connected in the d point, and VD is for providing the discharge power supply 7 of electric current to battery discharge, be negative voltage, be connected to the source electrode of VT2 and the other end of R9, the end ground connection of current sampling resistor R10, the other end and BAT negative pole, R2 is connected in the f point.
With reference to Fig. 2, the operation principle of present embodiment is as follows:
In battery BAT when charging,, Vi is being for just, Vi=I * R10, the voltage signal that IC1 output is positive, add to the VT1 grid through R3, make the VT1 conducting, VC charges to BAT by VT1, when charging current I flows through R10, produce a voltage to earth Vf, and feed back to the inverting input of IC1 by R2, IC1 exports different magnitudes of voltage by the difference of Vi, Vf relatively, adjust the angle of flow of VT1, make electric current I keep constant.The positive voltage signal of IC1 output adds to the base stage of VT3 simultaneously through R4, make the VT3 saturation conduction, voltage Vc＜VD of tie point c like this, and VT2 ends.
During battery BAT discharge, Vi is negative, Vi=-I * R10, and the negative voltage signal of IC1 output adds to the VT1 grid through R3, and because of cell voltage is a positive voltage, VT1 ends.The negative voltage signal of IC1 output also adds to the base stage of VT3 through R4, VT3 enters the adjustment magnifying state, makes voltage Vc＞VD, and VT2 enters conducting state, battery is by VT2, VD, R10 discharge, discharging current I produces a voltage to earth Vf when flowing through R10, this moment, Vf was a negative voltage, fed back to the inverting input of IC1 through R2, IC1 exports different magnitudes of voltage by the difference that compares Vi, Vf, adjust the angle of flow of VT3, change the angle of flow that magnitude of voltage Vc adjusts VT2, thereby guarantee the constant of electric current I.
In the present embodiment: IC1 adopts integrated transporting discharging chip OP07, VT1, VT2 adopt the N channel field-effect pipe of big electric current, low on-resistance, VT3 adopts triode 9014, V+ employing+12V, V-employing-5V, when battery was Ni-MH battery, nickel-cadmium cell, charge power supply VC was+3.5V that discharge power supply VD is-1V; When battery was lithium ion battery, charge power supply VC was+6V, and discharge power supply VD is 0V, can be directly and the GND short circuit.
Claims (3)
1, battery constant current charge-discharge device, it is characterized in that: comprise electric current given (1), constant-current control circuit (2), charging circuit (3), discharge circuit (4) and sample circuit (5), two inputs of constant-current control circuit (2) connect constant current given (1) respectively, the output of sample circuit (5), the output of constant-current control circuit (2) connects the control end of charging circuit (3) and the control end of discharge circuit (4), the output of charging circuit (3), the input of discharge circuit (4) is just connecting battery (6) respectively, negative pole, the input of sample circuit (5) connects the output of battery (6).
2, battery constant current charge-discharge device according to claim 1, it is characterized in that: the junction of the output of the control end of discharge circuit (4) and constant-current control circuit (2) also is provided with drive circuit (8), and the input of drive circuit (8), output connect output, discharge circuit (4) and the control input end of constant-current control circuit (2) respectively.
3, battery constant current charge-discharge device according to claim 2, it is characterized in that: electric current given (1) connects the positive input terminal of constant-current control circuit (2) by resistance R 1, constant-current control circuit (2) amplifies chip IC 1 by computing and constitutes, charging circuit (3) is by field effect transistor VT1 and peripheral resistance R 3 thereof, R8 is formed by connecting, discharge circuit (4) is by field effect transistor VT2 and peripheral resistance R 6 thereof, R9 is formed by connecting, drive circuit (8) is by triode VT3 and peripheral resistance R 4 thereof, R5, R7 is formed by connecting, sample circuit (5) is made of resistance R 10, R10 is connected across between the negative pole and ground of battery (6), and R10 and the tie point of battery (6) negative pole are connected the negative input end of IC1 by resistance R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250219 CN2593442Y (en) | 2002-12-12 | 2002-12-12 | Battery constant current charging-discharging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02250219 CN2593442Y (en) | 2002-12-12 | 2002-12-12 | Battery constant current charging-discharging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2593442Y true CN2593442Y (en) | 2003-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02250219 Expired - Fee Related CN2593442Y (en) | 2002-12-12 | 2002-12-12 | Battery constant current charging-discharging apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2593442Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557119B (en) * | 2008-04-09 | 2012-11-21 | 鹏智科技(深圳)有限公司 | Charging control circuit of secondary battery |
| CN104092251A (en) * | 2014-06-16 | 2014-10-08 | 叶林松 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
-
2002
- 2002-12-12 CN CN 02250219 patent/CN2593442Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557119B (en) * | 2008-04-09 | 2012-11-21 | 鹏智科技(深圳)有限公司 | Charging control circuit of secondary battery |
| CN104092251A (en) * | 2014-06-16 | 2014-10-08 | 叶林松 | Ni-mh battery and nickel-cadmium battery charging and discharging analyzer and charging and discharging method of ni-mh battery and nickel-cadmium battery charging and discharging analyzer |
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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 |