CN203800572U - Lithium battery protection circuit - Google Patents
Lithium battery protection circuit Download PDFInfo
- Publication number
- CN203800572U CN203800572U CN201420216180.2U CN201420216180U CN203800572U CN 203800572 U CN203800572 U CN 203800572U CN 201420216180 U CN201420216180 U CN 201420216180U CN 203800572 U CN203800572 U CN 203800572U
- Authority
- CN
- China
- Prior art keywords
- pin
- circuit
- connects
- protection circuit
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims abstract description 47
- 230000000087 stabilizing effect Effects 0.000 claims description 35
- 238000007600 charging Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a lithium battery protection circuit, comprising a chip protection circuit, a switch drive circuit and a binding post J1. An input terminal of the chip protection circuit is connected with the binding post J1. The lithium battery protection circuit also comprises a constant output terminal of the chip protection circuit is connected with an input terminal of the constant flow source type level shifting logical circuit. An output terminal of the constant flow source type level shifting logical circuit is connected with an input terminal of the delay protection circuit. An output terminal of the delay protection circuit is connected with the switch drive circuit. The MOS switch tube is connected with an output terminal of the switch drive circuit. According to the lithium battery protection circuit of the utility model, the constant flow source type level shifting logical circuit is provided, a capacitor in the delay protection circuit can be charged through the same current by any cells under protection. Through adjusting the magnitude of the resistor and the capacitor of the chip protection circuit, charging time on the capacitor can be accurately adjusted, hence over-discharge of the cell in a short time is reached while protection is realized.
Description
Technical field
The utility model relates to lithium battery charge and discharge protective technical field, especially relates to a kind of lithium battery protection circuit.
Background technology
In lithium ion battery use procedure, for avoiding user's mistake use and the continuous firing of charger to cause battery to heat up, the decomposition of battery electrolyte inside and produce gas and make to press in it liter, disengaging of lithium metal etc. and cause danger on fire and that break.Therefore; in lithium ion battery loop, all to adopt protective circuit; lithium ion charging, electric discharge are protected; must there is over-charge protective function; to prevent the deterioration in characteristics, on fire and break of battery; guarantee the safety and reliability of battery, " Cross prevention " protection battery can not transferred electricity to reach the object of protection battery at the state of short of electricity.
Along with the lifting of China's new forms of energy strategy propelling and environmental requirement, the lithium battery group of environmental protection is replaced traditional energy product more and more, effectively promotes the development of lithium battery protection board.Society is also more and more higher to the requirement of lithium battery protection board.Lithium battery voltage when high-multiplying power discharge is dragged down rapidly, causes protecting chip starting protection device, even can cause a lot of devices normally to work.Lithium battery protection circuit of the prior art generally includes chip protection circuit and drive circuit; current protective circuit conventionally adopts the method for the delay protection of chip on addressing this problem; but the time of time delay can not be controlled accurately and delay time can not be very long, also there are some baffles to adopt other technology but cost is very high.
Utility model content
The utility model object is for the existing above-mentioned technical problem of prior art, and a kind of lithium battery protection circuit is provided.
For achieving the above object, the utility model proposes a kind of lithium battery protection circuit, comprise chip protection circuit, switch driving circuit and binding post J1, the input of described chip protection circuit connects binding post J1, it also comprises that constant-current source type level moves logical circuit, delay protection circuit and MOS switching tube, the output of chip protection circuit connects the input that constant-current source type level moves logical circuit, constant-current source type level moves the input of the output connection delay protection circuit of logical circuit, the output of delay protection circuit is connected to switch driving circuit, described MOS switching tube connecting valve drive circuit output.
As preferably, described chip protection circuit is by four identical protection chip U1, U2, U3, U4, resistance R 1, R2, R3, R4,, capacitor C 1, C2, C3, C4 form;
The pin 1 of described binding post J1 is connected to the pin 5 of protection chip U1 by resistance R 1, between the pin 5 of U1 and pin 6, connect capacitor C 1, the pin 2 of binding post J1 connects the pin 6 of U1 and by resistance R 2, is connected to the pin 5 of protection chip U2, between the pin 5 of U2 and pin 6, connect capacitor C 2, the pin 3 of binding post J1 connects the pin 6 of U2 and by resistance R 3, is connected to the pin 5 of protection chip U3, between the pin 5 of U3 and pin 6, connect capacitor C 3, the pin 4 of binding post J1 connects the pin 6 of U3 and by resistance R 4, is connected to the pin 5 of protection chip U4, between the pin 5 of U4 and pin 6, connect capacitor C 4, the pin 5 of binding post J1 and U4 pin 6 ground connection,
Described constant-current source type level moves logical circuit and comprises eight constant-current source modules A 1 that are connected with chip protection circuit, wherein each constant-current source modules A 1 is by a resistance R, a triode Q and a diode D form, two constant-current source modules A, 1 input pin 1 being connected with protection chip U1 connects together and connects the pin 1 of binding post J1, and input pin 2 connects respectively OC and the OD end of U1; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U2 connects together and connects the pin 2 of binding post J1, and input pin 2 connects respectively OC and the OD end of U2; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U3 connects together and connects the pin 3 of binding post J1, and input pin 2 connects respectively OC and the OD end of U3; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U4 connects together and connects the pin 4 of binding post J1, and input pin 2 connects respectively OC and the OD end of U4; Hold constant-current source modules A 1 output being connected to connect together with OC for four and by a delay protection circuit A3 module, be connected to the control input end CON1 of switch driving circuit A4; Hold constant-current source modules A 1 output being connected to connect together with OD for four and by another delay protection circuit A3 module, be connected to the control input end CON2 of switch driving circuit A4.Under guard signal OC or OD startup, a plurality of constant-current source modules A 1 output currents can directly be realized "or" logic.
As preferably, described delay protection circuit comprises two identical electronic circuit A3, one of them electronic circuit A3 comprises voltage stabilizing didoe D2, resistance R 6, R7, capacitor C 6 and triode Q1, one end of a terminating resistor R6 of voltage stabilizing didoe D2, the other end connecting resistance R7 of R6 and one end of shunt capacitance C6 also connect the base stage of triode Q1, and the other end of resistance R 7 and shunt capacitance C6 and the other end of voltage stabilizing didoe D2 link together and ground connection; Another electronic circuit A3 comprises voltage stabilizing didoe D3, resistance R 8, R9, capacitor C 7 and triode Q2, one end of a terminating resistor R8 of voltage stabilizing didoe D3, the other end connecting resistance R9 of R8 and one end of shunt capacitance C7 also connect the base stage of triode Q2, and the other end of resistance R 9 and shunt capacitance C7 and the other end of voltage stabilizing didoe D3 link together and ground connection.
In some large electric current application scenarios, when started power supply, the battery pack multiplying power that sparks causes greatly battery pack transient voltage very low, causes protective circuit misoperation.As preferably, it is also provided with anti-moment low pressure voltage stabilizing circuit A2, described anti-moment low pressure voltage stabilizing circuit A2 comprises resistance R 5, diode D1 and capacitor C 5, one end of described resistance R 5 connects the positive pole of binding post J1, the other end of resistance R 5 connects the positive pole of diode D1, the negative pole connecting valve drive circuit power input VIN of diode D1 and one end of capacitor C 5, capacitor C 5 other end ground connection.Anti-moment low pressure voltage stabilizing circuit effect be prevent from postponing and the supply power voltage of drive circuit too low.
As preferably; described switch driving circuit is comprised of switch drive module A4; A4 module is a typical drive circuit; its power input connects the output of anti-moment low pressure voltage stabilizing circuit; meet binding post J1 pin 5(); control inputs pin connects respectively the output of two delay protection circuit A3 modules, and two outputs connect respectively the grid of MOS switching tube Q3 and Q4.
The utility model is provided with constant-current source type level and moves logical circuit, make which battery protection no matter can be with the electric current of formed objects to the capacitor charging in delay protection circuit, and by the size of resistance and electric capacity in adjusting delay protection circuit, can regulate accurately the time to capacitor charging, and reach short time battery over-discharge and the object of protection by mistake, simple in structure, production cost is low; And it is also provided with anti-moment low pressure voltage stabilizing circuit, can effectively prevent that battery is when large multiplying power discharging, voltage is dragged down rapidly, causes the idle problem of protective device to occur.
Accompanying drawing explanation
Fig. 1 is the left-half circuit diagram of a kind of lithium battery protection circuit described in the utility model.
Fig. 2 is the right half part circuit diagram of a kind of lithium battery protection circuit described in the utility model.
Fig. 3 is the circuit theory diagrams of protection chip described in the utility model.
Fig. 4 is the circuit diagram of constant-current source modules A 1 described in the utility model.
Fig. 5 is the circuit diagram of anti-moment low pressure voltage stabilizing circuit A2 described in the utility model.
Fig. 6 is the circuit diagram of delay protection circuit electronic circuit A3 described in the utility model.
Wherein, the node of Fig. 1 and Fig. 2 is connected as follows: a1 meets a2, and b1 meets b2, and c1 meets c2, and d1 meets d2, and e1 meets e2.
Embodiment
Feature of the present utility model and advantage will be elaborated by reference to the accompanying drawings by embodiment.
As shown in Figure 1-2, the utility model proposes a kind of lithium battery protection circuit, comprise chip protection circuit, constant-current source type level moves logical circuit, delay protection circuit, anti-moment low pressure voltage stabilizing circuit, switch driving circuit, binding post J1 and MOS switching tube, the input of described chip protection circuit connects binding post J1, the output of chip protection circuit connects the input that constant-current source type level moves logical circuit, constant-current source type level moves the input of the output connection delay protection circuit of logical circuit, the output of delay protection circuit is connected to drive circuit, described MOS switching tube connects drive circuit output.
As shown in Figure 1,3, described chip protection circuit is by four identical protection chip U1, U2, U3, U4, resistance R 1, R2, R3, R4,, capacitor C 1, C2, C3, C4 form, the pin 1 of binding post J1 is connected to the pin 5 of protection chip U1 by resistance R 1, between the pin 5 of U1 and pin 6, connect capacitor C 1, the pin 2 of binding post J1 connects the pin 6 of U1 and by resistance R 2, is connected to the pin 5 of protection chip U2, between the pin 5 of U2 and pin 6, connect capacitor C 2, the pin 3 of binding post J1 connects the pin 6 of U2 and by resistance R 3, is connected to the pin 5 of protection chip U3, between the pin 5 of U3 and pin 6, connect capacitor C 3, the pin 4 of binding post J1 connects the pin 6 of U3 and by resistance R 4, is connected to the pin 5 of protection chip U4, between the pin 5 of U4 and pin 6, connect capacitor C 4, the pin 5 of binding post J1 and U4 pin 6 ground connection.
As shown in Fig. 1,4, described constant-current source type level moves logical circuit and comprises 8 constant-current source modules A 1 that are connected with chip protection circuit.Two constant-current source modules A, 1 input pin 1 being connected with protection chip U1 connects together and connects the pin 1 of binding post J1, and input pin 2 connects respectively OC and the OD end of U1; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U2 connects together and connects the pin 2 of binding post J1, and input pin 2 connects respectively OC and the OD end of U2; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U3 connects together and connects the pin 3 of binding post J1, and input pin 2 connects respectively OC and the OD end of U3; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U4 connects together and connects the pin 4 of binding post J1, and input pin 2 connects respectively OC and the OD end of U4; Hold constant-current source modules A 1 output being connected to connect together with OC for four and by a delay protection circuit A3 module, be connected to the control input end CON1 of drive circuit A4 module; Hold constant-current source modules A 1 output being connected to connect together with OD for four and by another delay protection circuit A3 module, be connected to the control input end CON2 of switch driving circuit A4 module.Under guard signal OC or OD startup, a plurality of constant-current source modules A 1 output currents can directly be realized "or" logic.
Each constant-current source modules A 1 is a constant-current source circuit the simplest, and each constant-current source modules A 1 is by a resistance R, and a triode Q and a diode D form.
As shown in Figure 2,6, described delay protection circuit comprises two identical electronic circuit A3, one of them electronic circuit A3 comprises voltage stabilizing didoe D2, resistance R 6, R7, capacitor C 6 and triode Q1, one end of a terminating resistor R6 of voltage stabilizing didoe D2, the other end connecting resistance R7 of R6 and one end of shunt capacitance C6 also connect the base stage of triode Q1, and the other end of resistance R 7 and shunt capacitance C6 and the other end of voltage stabilizing didoe D2 link together and ground connection; Another electronic circuit A3 comprises voltage stabilizing didoe D3, resistance R 8, R9, capacitor C 7 and triode Q2, one end of a terminating resistor R8 of voltage stabilizing didoe D3, the other end connecting resistance R9 of R8 and one end of shunt capacitance C7 also connect the base stage of triode Q2, and the other end of resistance R 9 and shunt capacitance C7 and the other end of voltage stabilizing didoe D3 link together and ground connection.In conjunction with constant-current source type level, move the output current of logical circuit, in its delay circuit, in the situation that voltage stabilizing didoe D2 is selected, the value of resistance R 6, R7 and capacitor C 6 has determined delay time.
In addition, as shown in Fig. 2,5, lithium battery protection circuit of the present utility model is also provided with anti-moment low pressure voltage stabilizing circuit A2, and described anti-moment low pressure voltage stabilizing circuit A2 comprises resistance R 5, diode D1, capacitor C 5.One end of described resistance R 5 connects the positive pole of binding post J1, and the other end of resistance R 5 connects the positive pole of diode D1, the negative pole connecting valve drive circuit power input VIN of diode D1 and one end of capacitor C 5, capacitor C 5 other end ground connection.
As shown in Figure 2; described switch driving circuit is comprised of switch drive module A4; A4 module is a typical drive circuit; its power input connects the output of anti-moment low pressure voltage stabilizing circuit; meet binding post J1 pin 5(); control inputs pin connects respectively the output of two delay protection circuit A3 modules, and two outputs connect respectively the grid of MOS switching tube Q3 and Q4.
The operation principle that constant-current source type level moves logical circuit is: when when no matter, the protection chip OC of corresponding which batteries or OD end move; voltage between its corresponding constant-current source module I N1 and IN2 rises to single battery voltage from 0V; resistance in each constant-current source modules A 1 is consistent; the base current that flows through triode Q is exactly certain; according to the operation principle of triode; so no matter which batteries is protected; the electric current that flows through the diode of its corresponding constant-current source modules A 1 is all consistent, so give the supply current of delay protection circuit below, is also consistent.
The operation principle of delay protection circuit is: when wherein a batteries voltage overcharges or excessively puts; the OC of battery protection chip or OD terminal voltage become high level; by constant-current source type level, move logical circuit and flow into constant electric current of delay protection circuit; because the voltage of voltage stabilizing didoe D3 is constant; so electric current charges by 8 pairs of capacitor C 7 of resistance R; when the voltage at capacitor C 7 two ends reaches certain value; triode Q2 opens; the switch driving circuit being attached thereto starts; make MOS switching tube make protection action, cut loop.Battery is no longer discharged, thereby reach the object of protection battery.
And when the battery short time is during heavy-current discharge, cell voltage was dragged down by moment, the OD end output high level of corresponding battery protection chip, by constant-current source type level, move logical circuit and flow into constant electric current of delay protection circuit, electric current charges by 8 pairs of capacitor C 7 of resistance R, but due to short time electric discharge, the voltage of capacitor C 7 does not also reach drive circuit triode Q2 while opening needed magnitude of voltage, cell voltage recovers, protection chip OD signal has been replied low level, cut off the loop to capacitor charging, the electric weight of capacitor C 7 storages is given out light again by resistance R 9, drive circuit is not worked, thereby the object that reaches short time battery over-discharge and do not protect by mistake.So can pass through regulating resistance R8, the size of R9 and capacitor C 7, can reach the time regulating accurately to capacitor charge and discharge, reaches the object of accurate control time delay.
Anti-moment low pressure voltage stabilizing circuit operation principle: when connecting battery, cell voltage is by resistance R 5 and diode D1 to capacitor C 5 chargings, and diode cathode D1 voltage rising is until stable.When battery is during at large multiplying power discharging, voltage is dragged down rapidly, and the voltage of diode D1 positive pole is dragged down rapidly, and capacitor C 5 is given drive circuitry, and the change in voltage of diode D1 negative pole is slow.After certain hour, electric discharge finishes, and cell voltage recovers, and battery passes through resistance R 5 and diode D1 again to capacitor charging, thereby reaches the object of anti-moment low-voltage voltage stabilizing work.
Specific embodiment described herein is only to the explanation for example of the utility model structure.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. a lithium battery protection circuit, comprise chip protection circuit, switch driving circuit and binding post J1, the input of described chip protection circuit connects binding post J1, it is characterized in that: it also comprises that constant-current source type level moves logical circuit, delay protection circuit and MOS switching tube, the output of chip protection circuit connects the input that constant-current source type level moves logical circuit, constant-current source type level moves the input of the output connection delay protection circuit of logical circuit, the output of delay protection circuit is connected to switch driving circuit, described MOS switching tube connecting valve drive circuit output.
2. lithium battery protection circuit according to claim 1, is characterized in that: described chip protection circuit is by four identical protection chip U1, U2, U3, U4, resistance R 1, R2, R3, R4, and capacitor C 1, C2, C3, C4 form;
The pin 1 of described binding post J1 is connected to the pin 5 of protection chip U1 by resistance R 1, between the pin 5 of U1 and pin 6, connect capacitor C 1, the pin 2 of binding post J1 connects the pin 6 of U1 and by resistance R 2, is connected to the pin 5 of protection chip U2, between the pin 5 of U2 and pin 6, connect capacitor C 2, the pin 3 of binding post J1 connects the pin 6 of U2 and by resistance R 3, is connected to the pin 5 of protection chip U3, between the pin 5 of U3 and pin 6, connect capacitor C 3, the pin 4 of binding post J1 connects the pin 6 of U3 and by resistance R 4, is connected to the pin 5 of protection chip U4, between the pin 5 of U4 and pin 6, connect capacitor C 4, the pin 5 of binding post J1 and U4 pin 6 ground connection,
Described constant-current source type level moves logical circuit and comprises eight constant-current source modules A 1 that are connected with chip protection circuit, wherein each constant-current source modules A 1 is by a resistance R, a triode Q and a diode D form, two constant-current source modules A, 1 input pin 1 being connected with protection chip U1 connects together and connects the pin 1 of binding post J1, and input pin 2 connects respectively OC and the OD end of U1; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U2 connects together and connects the pin 2 of binding post J1, and input pin 2 connects respectively OC and the OD end of U2; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U3 connects together and connects the pin 3 of binding post J1, and input pin 2 connects respectively OC and the OD end of U3; Two constant-current source modules A, 1 input pin 1 being connected with protection chip U4 connects together and connects the pin 4 of binding post J1, and input pin 2 connects respectively OC and the OD end of U4; Hold constant-current source modules A 1 output being connected to connect together with OC for four and by a delay protection circuit A3 module, be connected to the control input end CON1 of switch driving circuit; Hold constant-current source modules A 1 output being connected to connect together with OD for four and by another delay protection circuit A3 module, be connected to the control input end CON2 of switch driving circuit.
3. lithium battery protection circuit according to claim 1 and 2, it is characterized in that: described delay protection circuit comprises two identical electronic circuit A3, one of them electronic circuit A3 comprises voltage stabilizing didoe D2, resistance R 6, R7, capacitor C 6 and triode Q1, one end of a terminating resistor R6 of voltage stabilizing didoe D2, the other end connecting resistance R7 of R6 and one end of shunt capacitance C6 also connect the base stage of triode Q1, and the other end of resistance R 7 and shunt capacitance C6 and the other end of voltage stabilizing didoe D2 link together and ground connection; Another electronic circuit A3 comprises voltage stabilizing didoe D3, resistance R 8, R9, capacitor C 7 and triode Q2, one end of a terminating resistor R8 of voltage stabilizing didoe D3, the other end connecting resistance R9 of R8 and one end of shunt capacitance C7 also connect the base stage of triode Q2, and the other end of resistance R 9 and shunt capacitance C7 and the other end of voltage stabilizing didoe D3 link together and ground connection.
4. lithium battery protection circuit according to claim 1; it is characterized in that: it is also provided with anti-moment low pressure voltage stabilizing circuit A2; described anti-moment low pressure voltage stabilizing circuit A2 comprises resistance R 5, diode D1 and capacitor C 5; one end of described resistance R 5 connects the positive pole of binding post J1; the other end of resistance R 5 connects the positive pole of diode D1; the negative pole connecting valve drive circuit power input VIN of diode D1 and one end of capacitor C 5, capacitor C 5 other end ground connection.
5. lithium battery protection circuit according to claim 4; it is characterized in that: described switch driving circuit is comprised of switch drive module A4; its power input connects the output of anti-moment low pressure voltage stabilizing circuit; connect the pin 5 of binding post J1; control inputs pin connects respectively the output of two delay protection circuit A3 modules, and two outputs connect respectively the grid of MOS switching tube Q3 and Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216180.2U CN203800572U (en) | 2014-04-30 | 2014-04-30 | Lithium battery protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216180.2U CN203800572U (en) | 2014-04-30 | 2014-04-30 | Lithium battery protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203800572U true CN203800572U (en) | 2014-08-27 |
Family
ID=51382761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420216180.2U Expired - Fee Related CN203800572U (en) | 2014-04-30 | 2014-04-30 | Lithium battery protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203800572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410110A (en) * | 2014-10-28 | 2015-03-11 | 芜湖天元汽车电子有限公司 | Lithium battery guard plate light-current lock control circuit |
-
2014
- 2014-04-30 CN CN201420216180.2U patent/CN203800572U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104410110A (en) * | 2014-10-28 | 2015-03-11 | 芜湖天元汽车电子有限公司 | Lithium battery guard plate light-current lock control circuit |
| CN104410110B (en) * | 2014-10-28 | 2018-11-27 | 芜湖天元汽车电子有限公司 | A kind of lithium battery protection board light current lock control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101916983A (en) | Battery protection circuit and portable light | |
| CN103023081A (en) | Mobile power supply with electric quantity detection function | |
| CN204334058U (en) | A kind of balancer of serial lithium battery group | |
| CN105428735A (en) | Storage-control-integrated solar energy lithium battery module | |
| CN103701162A (en) | Battery management system | |
| CN205646972U (en) | Zero incessant circulation safety fast switch over group battery | |
| CN202014087U (en) | Lithium battery charging protection circuit for portable system | |
| CN103280858A (en) | Charging method preventing overcharging of cells of lithium battery pack | |
| CN207884316U (en) | A kind of equipment extending base station storage batteries discharge time | |
| CN202405763U (en) | Over-discharge protection circuit and battery utilizing same | |
| CN103545895B (en) | A kind of battery pack balancing panel | |
| TWM518824U (en) | Charging device with active charge equalization | |
| CN203800572U (en) | Lithium battery protection circuit | |
| EP3176866A1 (en) | Resonating lithium battery device with damping function | |
| CN204441932U (en) | Lead-acid battery and lithium battery parallel combined energy storage battery power supply system | |
| CN105633940A (en) | Starting power supply system for unmanned helicopter | |
| CN107681737A (en) | A kind of UAV Intelligent charging system | |
| CN203660517U (en) | Additional automatic recovery device of lithium battery protection circuit | |
| CN204258377U (en) | A kind of lithium battery group intelligent balance recovers charger | |
| CN203983422U (en) | The large electric current lithium ion battery group with self-protection function and extensibility | |
| CN202798079U (en) | Charging/discharging protection circuit of lithium battery | |
| CN202435066U (en) | Lithium-ion battery pack management system with two-way current limiting function | |
| CN201726162U (en) | Lithium ion power battery guard plate | |
| CN201504110U (en) | Intelligent balanced lithium battery power supply | |
| CN201260085Y (en) | Solar energy controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170727 Address after: Suzhou City, Jiangsu province 215000 Industrial Park Suzhou Huahong Street No. 29 Patentee after: ANKAO (SUZHOU) ENERGY Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310030 Xihu District West Road No. 3 Building 1 Patentee before: CENS ENERGY-TECH CO.,LTD. |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200327 Granted publication date: 20140827 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230309 Granted publication date: 20140827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |