CN2877108Y - Back-up power managing device - Google Patents
Back-up power managing device Download PDFInfo
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- CN2877108Y CN2877108Y CN 200620053887 CN200620053887U CN2877108Y CN 2877108 Y CN2877108 Y CN 2877108Y CN 200620053887 CN200620053887 CN 200620053887 CN 200620053887 U CN200620053887 U CN 200620053887U CN 2877108 Y CN2877108 Y CN 2877108Y
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Abstract
The utility model discloses a back-up power supply management device which includes a power output socket S2, a back-up power working circuit connected with the socket S2, a charging input socket S3, a back-up battery protective circuit connected with the socket S3 and a battery, a main control unit MCU for modulating pulse width and an electric quantity display circuit connected with the back-up power working circuit, and a power supply management circuit connected with the MCU and the sockets S2 and S3. The utility model provides a back-up power management device capable of performing constant current/voltage and displaying electric quantity of battery based on the double pulse width modulated PWM with the advantages of low self consumption of power, high safety and efficiency, long service life and high performance-to-price ratio. It can be used for feeding power to electric equipment by increasing voltage of a single lithium battery to a certain value or charging main battery of the electric equipment via the electric equipment (with a charging management circuit) or charging a lithium battery directly.
Description
Technical field
The utility model relates to a kind of power supply generator, is meant a kind of back-up source management devices that designs at the electrical appliance that adopts lithium battery especially.
Background technology
The mobile device of Shi Yonging is more and more in the market, particularly some handheld devices such as mobile phone, PDA, MP3 etc., because the volume of electrical appliance itself is just smaller, therefore volume of battery is restricted, but the capacity density of lithium battery still is limited at present, so a lot of user needs back-up source to increase service time.In the Managed Solution of back-up source, relatively more current at present scheme is to adopt the lithium battery of a single-unit as power supply, boost to the main battery charging that 5V directly powers to electrical appliance or gives electrical appliance then, but this scheme there is very big drawback: 1, can not realize current-limiting function; If 2 electrical appliances do not have Charge Management, then can have very big potential safety hazard (because can not current limliting, use very big current charges, occur potential safety hazard easily) for the main battery charging of electrical appliance if main battery voltage is very low with this back-up source; 3, can not realize the CC/CV function; 4, the consumable electric current is bigger.
The utility model content
Technical problem to be solved in the utility model provide a kind of based on dipulse width modulated PWM control, realize constant current constant voltage, the back-up source management devices that battery electric quantity shows, the consumable electric current is little, safe and reliable, efficient is high, the life-span is long, cost performance is high.
The utility model is achieved through the following technical solutions: design a kind of back-up source management devices; comprise power output socket S2; the back-up source work loop that links with socket S2; charging input socket S3; the backup battery protective circuit that links with socket S3 and battery; back-up source work loop and one realizes that the main control MCU and the electric weight display circuit of pulse width modulation connect, and main control MCU also connects with an electric power management circuit, and described electric power management circuit connects with socket S2, S3.
Described main control MCU and electric weight display circuit, comprise microprocessor U3, the electric weight display circuit and the voltage stabilizing circuit that link with U3,2 pin of microprocessor U3,4 pin, 9 pin and back-up source work loop link, 5 pin of microprocessor U3 connect with electric power management circuit by contact VCC, 15 pin of U3 connect with contact VCC by inductance L 2, described electric weight display circuit is by field effect transistor Q4, capacitor C 5, resistance R 9, R16-R21, light-emitting diode D5-D8 forms, the grid of field effect transistor Q4 connects with 18 pin of microprocessor U3 by contact CLK, one end of the drain electrode of Q4 and resistance R 17 links, the other end of resistance R 17 is by resistance R 9, R16 connects with battery terminal B+ and contact POWER respectively, contact POWER connects with 8 pin of U3, light-emitting diode D5, D6, D7, the positive pole of D8 (anode) respectively with 11 of microprocessor U3,12,13,14 pin connect, light-emitting diode D5, D6, D7, the negative pole of D8 (negative electrode) is respectively by resistance R 18, R19, R20, R21 ground connection; Described voltage stabilizing circuit is made up of three-terminal voltage-stabilizing pipe U1, resistance R 7, and the negative electrode of three-terminal voltage-stabilizing pipe U1 connects with contact VCC by resistance R 7, and the reference edge of U1 connects with 17 pin of microprocessor U3 by contact VREF.
Described back-up source work loop, comprise field effect transistor Q1, Q8, transistor Q5, Q6, Q7, voltage stabilizing didoe D1, D2, inductance L 1, the drain electrode of field effect transistor Q1 connects with collector electrode and the battery terminal B+ of transistor Q6, the grid of Q1 connects with the emitter of transistor Q6 and the emitter of Q7, one end of transistorized base stage and resistance R 13, the collector electrode of the base stage of transistor Q7 and transistor Q5 connects, the other end of resistance R 13 connects with battery terminal B+, the base stage of transistor Q5 connects with 2 pin of microprocessor U3 by resistance R 10 and contact PWM1, the source electrode of field effect transistor Q1 connects with the negative electrode of voltage stabilizing didoe D2 and an end of inductance L 1, the other end of L1 connects with the anode of voltage stabilizing didoe D1 and the drain electrode of field effect transistor Q8, the negative electrode of D1 connects with power output socket S2, and the grid of field effect transistor Q8 connects with 4 pin of microprocessor U3 by contact PWM2.The output in back-up source work loop also connects with output filter circuit, voltage detecting feedback circuit and current detection and feedback circuit, and described output filter circuit is made up of capacitor C 1 and C6, and the end of capacitor C 1, C6 connects with the negative electrode of voltage stabilizing didoe D1; Described voltage detecting feedback circuit is made up of resistance R 5, R11 and capacitor C 2, and an end of resistance R 11 connects with an end of resistance R 5 and connects with 9 pin of microprocessor U3 by contact DISV, and capacitor C 2 is connected to resistance R 11 two ends; Described current detection and feedback circuit is made up of resistance R 8, R14 and capacitor C 4, and an end of resistance R 15 connects with an end of power output socket S2 and resistance R 8, and the other end of resistance R 8 connects with capacitor C 4 and connects with 20 pin of microprocessor by contact L+.
Described electric power management circuit comprises transistor Q2, field effect transistor Q3, resistance R 1, R2, R6, R22, diode D3, D4, the drain electrode of field effect transistor Q3 links by the base stage of resistance R 6 with transistor Q2, the grid of Q3 connects with charging input socket S3 and power output socket S2 respectively by diode D3, D4, the emitter of transistor Q2 connects with battery terminal B+, and the collector electrode of Q2 connects with 5 pin and 15 pin of microprocessor U3 by contact VCC.Electric power management circuit is also checked circuit with a battery electric quantity static state, described battery electric quantity static state checks that circuit checks starting switch S1 by diode D9, D10 and electric weight, the anode of diode D9 connects with the drain electrode of field effect transistor Q3, the negative electrode of D9 checks that with negative electrode and the electric weight of diode D10 starting switch S1 connects, and the anode of D10 connects with 8 pin of microprocessor U3 by contact POWER.
Described backup battery protective circuit; comprise and discharge and recharge control protection integrated circuit U4; double-field effect pipe integrated circuit U2; resistance R 14; feedback resistance R12; filter capacitor C3; 5 pin (VDD) that discharge and recharge control protection integrated circuit U4 connect with battery terminal B+ and charging input socket S3 by resistance R 14; U46 pin (VSS) connects with battery terminal B-; capacitor C 3 is connected between 5 pin and 6 pin of U4; 1 pin (DOUT) of U1; 3 pin (COUT) connect with 5 pin (G2) and 4 pin (G1) of double-field effect pipe integrated circuit U2 respectively, and feedback resistance R12 connects with 2 pin (V-) of U4 and 3 pin of U2.
The management devices of the utility model back-up source charges for the main battery of electrical appliance by single-unit lithium battery (2.5v-4.2v) being boosted to 5V to the electrical appliance power supply or by electrical appliance (band charge management circuit), also can directly give lithium cell charging; Can realize that electric weight shows and constant current/constant voltage output, when not connecing electrical appliance, the quiescent dissipation of itself is fewer, for the battery of band Charge Management with not with the battery of Charge Management, implements control simultaneously.
Description of drawings
Fig. 1 is the management devices main control MCU and the electric weight display circuit schematic diagram of the utility model back-up source;
Fig. 2 is the management devices back-up source work circuit theory figure of the utility model back-up source;
Fig. 3 is the management devices electric power management circuit schematic diagram of the utility model lithium back-up source;
Fig. 4 is the management devices backup battery protective circuit schematic diagram of the utility model lithium back-up source;
Embodiment
Power output socket S2 and charging input socket S3 adopt same model three-pin socket, and it has following characteristic: when not having plug to insert, and the 3rd pin of socket and the 1st pin short circuit, when plug inserted, 3 pin of socket were separate.
Be elaborated below with reference to accompanying drawing:
As shown in Figure 1, management devices main control MCU and electric weight display circuit schematic diagram for the utility model back-up source, comprise microprocessor U3, the electric weight display circuit and the voltage stabilizing circuit that link with U3,2 pin of microprocessor U3,4 pin, 9 pin and back-up source work loop link, 5 pin of microprocessor U3 connect with electric power management circuit by contact VCC, 15 pin of U3 connect with contact VCC by inductance L 2, described electric weight display circuit is by field effect transistor Q4, capacitor C 5, resistance R 9, R16-R21, light-emitting diode D5-D8 forms, the grid of field effect transistor Q4 connects with 18 pin of microprocessor U3 by contact CLK, one end of the drain electrode of Q4 and resistance R 17 links, the other end of resistance R 17 is by resistance R 9, R16 connects with battery terminal B+ and contact POWER respectively, contact POWER connects with 8 pin of U3, light-emitting diode D5, D6, D7, the positive pole of D8 (anode) respectively with 11 of microprocessor U3,12,13,14 pin connect, light-emitting diode D5, D6, D7, the negative pole of D8 (negative electrode) is respectively by resistance R 18, R19, R20, R21 ground connection; Described voltage stabilizing circuit is made up of three-terminal voltage-stabilizing pipe U1, resistance R 7, and the negative electrode of three-terminal voltage-stabilizing pipe U1 connects with contact VCC by resistance R 7, and the reference edge of U1 connects with 17 pin of microprocessor U3 by contact VREF.
Back-up source work loop with reference to Fig. 2, comprise field effect transistor Q1, Q8, transistor Q5, Q6, Q7, voltage stabilizing didoe D1, D2, inductance L 1, the drain electrode of field effect transistor Q1 connects with collector electrode and the battery terminal B+ of transistor Q6, the grid of Q1 connects with the emitter of transistor Q6 and the emitter of Q7, one end of transistorized base stage and resistance R 13, the collector electrode of the base stage of transistor Q7 and transistor Q5 connects, the other end of resistance R 13 connects with battery terminal B+, the base stage of transistor Q5 connects with 2 pin of microprocessor U3 by resistance R 10 and contact PWM1, the source electrode of field effect transistor Q1 connects with the negative electrode of voltage stabilizing didoe D2 and an end of inductance L 1, the other end of L1 connects with the anode of voltage stabilizing didoe D1 and the drain electrode of field effect transistor Q8, the negative electrode of D1 connects with 2 pin of power output socket S2, and the grid of field effect transistor Q8 connects with 4 pin of microprocessor U3 by contact PWM2.The output in back-up source work loop also connects with output filter circuit, voltage detecting feedback circuit and current detection and feedback circuit, and described output filter circuit is made up of capacitor C 1 and C6, and the end of capacitor C 1, C6 connects with the negative electrode of voltage stabilizing didoe D1; Described voltage detecting feedback circuit is made up of resistance R 5, R11 and capacitor C 2, and an end of resistance R 11 connects with an end of resistance R 5 and connects with 9 pin of microprocessor U3 by contact DISV, and capacitor C 2 is connected to resistance R 11 two ends; Described current detection and feedback circuit is made up of resistance R 8, R14 and capacitor C 4, one end of resistance R 15 connects with an end of 1 pin of power output socket S2 and resistance R 8, and the other end of resistance R 8 connects with capacitor C 4 and connects with 20 pin of microprocessor by contact L+.
Electric power management circuit with reference to Fig. 3, comprise transistor Q2, field effect transistor Q3, resistance R 1, R2, R6, R22, diode D3, D4, the drain electrode of field effect transistor Q3 links by the base stage of resistance R 6 with transistor Q2, the grid of Q3 connects with the negative electrode of diode D3, D4, the anode of D3 connects with 3 pin of charging input socket S3 by contact SW1, the anode of D4 connects with 3 pin of power output socket S2 by contact SW2, the emitter of transistor Q2 connects with battery terminal B+, and the collector electrode of Q2 connects with 5 pin and 15 pin of microprocessor U3 by contact VCC.Electric power management circuit is also checked circuit with a battery electric quantity static state, described battery electric quantity static state checks that circuit checks starting switch S1 by diode D9, D10 and electric weight, the anode of diode D9 connects with the drain electrode of field effect transistor Q3, the negative electrode of D9 checks that with negative electrode and the electric weight of diode D10 starting switch S1 connects, and the anode of D10 connects with 8 pin of microprocessor U3 by contact POWER.
When back-up source (does not charge the battery when not using, back-up source is not output also), contact SW1 and SW2 receive ground by the 3PIN of socket S3 and S2 respectively, and this moment, the OPEN end of U3 exported 0, and electric weight checks that starting switch S1 does not press, so field effect transistor Q3 ends, thereby crystal Q2 ends, and stops the power supply to U3, so all I/O mouth voltages of U3 all are 0, contact CLK terminal voltage is 0, and field effect transistor Q4 ends; Contact PWM2 terminal voltage is 0; transistor Q5, Q7 end; the Q6 conducting; thereby field effect transistor Q1 ends; except discharging and recharging control protection integrated circuit U4, resistance R 1, R2 consumption electricity (altogether less than the 12uA electric current); other circuit of device do not consume electricity, thereby have reached ultralow quiescent dissipation.
Check starting switch S1 when pressing electric weight, by diode D9, resistance R 6 conducting Q2, contact VCC output this moment high level, power to microprocessor U3,3 pin of U3 are by drawing output on the contact SW3 end inside simultaneously, by the level of detection SW3, if 0, then be judged as key and pressed, show it is that electric weight shows request, 18 pin of U3 are by contact CLK output 1, and conducting field effect transistor Q4 is by resistance R 16, R17 dividing potential drop, U3 is in the voltage of contact POWER end detection battery, the position that LED is lighted in decision according to voltage.When socket S3 inserted plug, the 3rd pin of S 3 and the 1st pin were isolated, and anode is by resistance R 2, two utmost point D3 turn-on transistor Q3, field effect transistor Q2, and to the U3 power supply, U3 detects cell voltage by contact POWER end, thereby shows battery electric quantity.In like manner, when S2 inserted plug, U3 also can detect cell voltage, shows battery meter.
When socket S2 or S3 insertion plug, transistor Q2 conducting, battery is given U 3 power supplies, U3 is at contact PWM2 end output level 1 then, conducting field effect transistor Q1,19 of U3,20 pin are by contact L+, L-detects discharging current, if do not detect discharging current, at the square wave of PWM2 end output 500kHz frequency, adjust the duty ratio of square wave high-low level then, make the voltage of the output in back-up source work loop reach 5V, pass through L+ again, L-detects discharging current, if also there is not electric current, show and do not insert load (may be that charging socket S3 has inserted plug) that U3 just finishes electric quantity display function.
If detect discharging current, show and inserted load, at this moment U3 is at contact PWM1 end output 0 level, U3 detects the voltage of the output in back-up source work loop by contact DISV end, if voltage is still arranged, show that the load that back-up source inserts is a battery of not being with Charge Management,, show it is the battery of band Charge Management if there is not voltage.Battery for the band Charge Management, U3 is at the square wave of contact PWM2 end output 500kHz frequency, adjust duty ratio, make the voltage of the output in back-up source work loop be stabilized in 5V, if U3 detects the limits value that output current has reached output current, reduce output voltage, be stabilized in the limits value of output current, thereby reach the process of constant current control; For not with the battery of Charge Management, U3 adjusts duty ratio at the square wave of contact PWM2 end output 500kHz frequency, makes outputting current steadily at the output current limits value; If the conducting duty ratio of PWM2 is 0% o'clock, output current is still greater than the limits value of output current, U3 is at contact PWM2 end output 0 level, export the square wave of 250kHz frequency then at contact PWM1 end, implementation step-down output, keep output current at limits value, thereby realize the process of constant current control; Voltage rising when the load battery, when step-down can not be satisfied output current, U3 exports 1 level at contact PWM1, then in the output of boosting of the square wave of contact PWM2 end output 500kHz frequency, when the output end voltage in back-up source work loop reaches 4.2V, be stabilized in 4.2V output, thereby realize the function of constant voltage charge, guaranteeing can not overcharge to battery causes danger.
Backup battery protective circuit with reference to Fig. 4; comprise and discharge and recharge control protection integrated circuit U4; double-field effect pipe integrated circuit U2; resistance R 14; feedback resistance R12; filter capacitor C3; 5 pin (VDD) that discharge and recharge control protection integrated circuit U4 connect by 1 pin of resistance R 14 with battery terminal B+ and charging input socket S 3; U46 pin (VSS) connects with battery terminal B-; capacitor C 3 is connected between 5 pin and 6 pin of U4; 1 pin (DOUT) of U1; 3 pin (COUT) connect with 5 pin (G2) and 4 pin (G1) of double-field effect pipe integrated circuit U2 respectively, and feedback resistance R12 connects with 2 pin (V-) of U4 and 3 pin of U2.
Claims (7)
1. back-up source management devices; comprise power output socket S2; the back-up source work loop that links with socket S2; charging input socket S3; the backup battery protective circuit that links with socket S3 and battery; the main control MCU and the electric weight display circuit that it is characterized in that back-up source work loop and a realization pulse width modulation connect, and main control MCU also connects with an electric power management circuit, and described electric power management circuit connects with socket S2, S3.
2. back-up source management devices according to claim 1, it is characterized in that described main control MCU and electric weight display circuit, comprise microprocessor U3, the electric weight display circuit and the voltage stabilizing circuit that link with U3,2 pin of microprocessor U3,4 pin, 9 pin and back-up source work loop link, 5 pin of microprocessor U3 connect with electric power management circuit by contact VCC, 15 pin of U3 connect with contact VCC by inductance L 2, described electric weight display circuit is by field effect transistor Q4, capacitor C 5, resistance R 9, R16-R21, light-emitting diode D5-D8 forms, the grid of field effect transistor Q4 connects with 18 pin of microprocessor U3 by contact CLK, one end of the drain electrode of Q4 and resistance R 17 links, the other end of resistance R 17 is by resistance R 9, R16 connects with battery terminal B+ and contact POWER respectively, contact POWER connects with 8 pin of U3, light-emitting diode D5, D6, D7, the positive pole of D8 respectively with 11 of microprocessor U3,12,13,14 pin connect, light-emitting diode D5, D6, D7, the negative pole of D8 is respectively by resistance R 18, R19, R20, R21 ground connection; Described voltage stabilizing circuit is made up of three-terminal voltage-stabilizing pipe U1, resistance R 7, and the negative electrode of three-terminal voltage-stabilizing pipe U1 connects with contact VCC by resistance R 7, and the reference edge of U1 connects with 17 pin of microprocessor U3 by contact VREF.
3. back-up source management devices according to claim 2, it is characterized in that described back-up source work loop, comprise field effect transistor Q1, Q8, transistor Q5, Q6, Q7, voltage stabilizing didoe D1, D2, inductance L 1, the drain electrode of field effect transistor Q1 connects with collector electrode and the battery terminal B+ of transistor Q6, the grid of Q1 connects with the emitter of transistor Q6 and the emitter of Q7, one end of transistorized base stage and resistance R 13, the collector electrode of the base stage of transistor Q7 and transistor Q5 connects, the other end of resistance R 13 connects with battery terminal B+, the base stage of transistor Q5 connects with 2 pin of microprocessor U3 by resistance R 10 and contact PWM1, the source electrode of field effect transistor Q1 connects with the negative electrode of voltage stabilizing didoe D2 and an end of inductance L 1, the other end of L1 connects with the anode of voltage stabilizing didoe D1 and the drain electrode of field effect transistor Q8, the negative electrode of D1 connects with power output socket S2, and the grid of field effect transistor Q8 connects with 4 pin of microprocessor U3 by contact PWM2.
4. back-up source management devices according to claim 3, the output that it is characterized in that described back-up source work loop also connects with output filter circuit, voltage detecting feedback circuit and current detection and feedback circuit, described output filter circuit is made up of capacitor C 1 and C6, and the end of capacitor C 1, C6 connects with the negative electrode of voltage stabilizing didoe D1; Described voltage detecting feedback circuit is made up of resistance R 5, R11 and capacitor C 2, and an end of resistance R 11 connects with an end of resistance R 5 and connects with 9 pin of microprocessor U3 by contact DISV, and capacitor C 2 is connected to resistance R 11 two ends; Described current detection and feedback circuit is made up of resistance R 8, R14 and capacitor C 4, and an end of resistance R 15 connects with an end of power output socket S2 and resistance R 8, and the other end of resistance R 8 connects with capacitor C 4 and connects with 20 pin of microprocessor by contact L+.
5. back-up source management devices according to claim 2, it is characterized in that electric power management circuit comprises transistor Q2, field effect transistor Q3, resistance R 1, R2, R6, R22, diode D3, D4, the drain electrode of field effect transistor Q3 links by the base stage of resistance R 6 with transistor Q2, the grid of Q3 connects with charging input socket S3 and power output socket S2 respectively by diode D3, D4, the emitter of transistor Q2 connects with battery terminal B+, and the collector electrode of Q2 connects with 5 pin and 15 pin of microprocessor U3 by contact VCC.
6. the device of back-up source management according to claim 5, it is characterized in that electric power management circuit also checks circuit with a battery electric quantity static state, described battery electric quantity static state checks that circuit checks starting switch S1 by diode D9, D10 and electric weight, the anode of diode D9 connects with the drain electrode of field effect transistor Q3, the negative electrode of D9 checks that with negative electrode and the electric weight of diode D10 starting switch S1 connects, and the anode of D10 connects with 8 pin of microprocessor U3 by contact POWER.
7. back-up source management devices according to claim 1; it is characterized in that described backup battery protective circuit; comprise and discharge and recharge control protection integrated circuit U4; double-field effect pipe integrated circuit U2; resistance R 14; feedback resistance R12; filter capacitor C3; 5 pin (VDD) that discharge and recharge control protection integrated circuit U4 connect with battery terminal B+ and charging input socket S3 by resistance R 14; U46 pin (VSS) connects with battery terminal B-; capacitor C 3 is connected between 5 pin and 6 pin of U4; 1 pin (DOUT) of U1; 3 pin (COUT) connect with 5 pin (G2) and 4 pin (G1) of double-field effect pipe integrated circuit U2 respectively, and feedback resistance R12 connects with 2 pin (V-) of U4 and 3 pin of U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053887 CN2877108Y (en) | 2006-01-14 | 2006-01-14 | Back-up power managing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053887 CN2877108Y (en) | 2006-01-14 | 2006-01-14 | Back-up power managing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2877108Y true CN2877108Y (en) | 2007-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620053887 Expired - Fee Related CN2877108Y (en) | 2006-01-14 | 2006-01-14 | Back-up power managing device |
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| Country | Link |
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| CN (1) | CN2877108Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955067A (en) * | 2012-10-24 | 2013-03-06 | 深圳市沛城电子科技有限公司 | Movable power supply discharging current detecting method and system |
| CN103280850A (en) * | 2013-05-13 | 2013-09-04 | 杭州电子科技大学 | Drive circuit with charger baby and multipurpose LED (light-emitting diode) functions |
| CN108663626A (en) * | 2017-08-16 | 2018-10-16 | 众泰新能源汽车有限公司 | A kind of prediction technique of power battery SOH |
-
2006
- 2006-01-14 CN CN 200620053887 patent/CN2877108Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955067A (en) * | 2012-10-24 | 2013-03-06 | 深圳市沛城电子科技有限公司 | Movable power supply discharging current detecting method and system |
| CN103280850A (en) * | 2013-05-13 | 2013-09-04 | 杭州电子科技大学 | Drive circuit with charger baby and multipurpose LED (light-emitting diode) functions |
| CN103280850B (en) * | 2013-05-13 | 2015-06-17 | 杭州电子科技大学 | Drive circuit with charger baby and multipurpose LED (light-emitting diode) functions |
| CN108663626A (en) * | 2017-08-16 | 2018-10-16 | 众泰新能源汽车有限公司 | A kind of prediction technique of power battery SOH |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070307 Termination date: 20140114 |