CN203859499U - Energy conservation and protection circuit for lithium-ion battery pack protection board - Google Patents
Energy conservation and protection circuit for lithium-ion battery pack protection board Download PDFInfo
- Publication number
- CN203859499U CN203859499U CN201420056769.0U CN201420056769U CN203859499U CN 203859499 U CN203859499 U CN 203859499U CN 201420056769 U CN201420056769 U CN 201420056769U CN 203859499 U CN203859499 U CN 203859499U
- Authority
- CN
- China
- Prior art keywords
- circuit
- battery pack
- switch
- ion battery
- mcu
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 238000004134 energy conservation Methods 0.000 title abstract 3
- 238000005070 sampling Methods 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses an energy conservation and protection circuit for a lithium-ion battery pack protection board. The circuit comprises an MCU detection control circuit U1, a gating switch K1, a circuit control switch K2, a power supply circuit P1, a battery pack E1 and a voltage sampling circuit which is formed by voltage sampling resistors R1 and R2 and a switch K3. The gating switch K1 is connected in series with a diode D1 and then connected in parallel with the circuit control switch K2. The power supply circuit P1 and the circuit control switch K2 are connected in series and arranged between the circuit control switch K2 and the MCU detection control circuit U1. Beneficial effects of the energy conservation and protection circuit are that power supply of the P1 is automatically detected and disconnected by the MCU detection control circuit U1 when a battery pack is not used for a long time for storage and voltage reaches a low voltage limit protection value so that the protection board circuit is ensured not to consume electricity of the battery pack continuously, and severe influence on the battery pack caused by the fact that the battery pack continues to self-consume electricity till zero voltage is avoided.
Description
[technical field]
The utility model relates to lithium ion battery field, relates in particular to a kind of energy-saving protective circuit of lithium ion battery group baffle.
[background technology]
Lithium ion battery is current a kind of New Energy Industry with very high development prospect, because of advantages such as its life-span length, environmental protection, must become the sophisticated industry in following energy storage field, and its promotion to electric automobile, the development of high-energy energy storage device has strategic importance.
Traditional lithium ion battery group; due to its physical characteristic; from battery set charge/discharge security consideration; need to guarantee by baffle the safety of battery charging and discharging; but baffle time also requires the expenditure of energy in work, and its energy source is in battery pack, and this has just increased the power consumption of battery pack; if baffle cannot be controlled from battery pack power taking for a long time, there is the risk that is discharged to low pressure or zero-pressure in battery pack so.
In order to prevent that the long-term power consumption of battery protecting plate self from causing battery low pressure or zero-pressure; must solve three problems: during 1, when battery pack is not used for a long time or in store status; can manual-lock baffle power supply, to ensure that baffle does not obtain any electric energy from battery.2,, when battery discharge arrives minimal protection limit value, can automatically the power supply of self be cut off, to ensure that baffle does not obtain any electric energy from battery.3, baffle can return to normal power supply state from power-down state easily.
In view of above drawback, be necessary to provide a kind of energy-saving protective circuit of lithium ion battery protecting plate to overcome above-mentioned defect in fact.
[utility model content]
The purpose of this utility model is to provide a kind of energy-saving protective circuit of lithium ion battery group baffle, still power taking battery pack of baffle while effectively having stoped battery pack on one's own time.
To achieve these goals; the utility model adopts following technical scheme: a kind of energy-saving protective circuit of lithium ion battery group baffle; it comprises that MCU detects control circuit U1; gating switch K1; circuit controling switch K2; power circuit P1; battery pack E1 and the voltage sampling circuit being formed by voltage sample resistance R 1, R2 and K switch 3; wherein; after gating switch K1 series diode D1, be connected in parallel with circuit controling switch K2; power circuit P1 and circuit controling switch K2 are cascaded, and detect between control circuit U1 at circuit controling switch K2 and MCU.
As a kind of improvement of the energy-saving protective circuit of the utility model lithium ion battery group baffle, described gating switch K1 is a kind of button reset switch.
A kind of improvement as the energy-saving protective circuit of the utility model lithium ion battery group baffle; described power circuit P1 provides operating voltage for MCU detects control circuit U1; 3 of circuit controling switch K2; 4 pin are connected between power circuit P1 and battery pack E1; its 1,2 pin detects control circuit U1 by MCU and controls.
As a kind of improvement of the energy-saving protective circuit of the utility model lithium ion battery group baffle, described voltage sample resistance R 1 is connected on battery pack E1 and MCU detects between control circuit U1, and it is used for providing for MCU testing circuit U1 the state of cell voltage.
A kind of improvement as the energy-saving protective circuit of the utility model lithium ion battery group baffle; described voltage sample resistance R 2 is from power taking between K1 and diode D1, and with 1,2 pin series connection of K switch 3; after 3,5 pin of K3 produce signal, be input to MCU and detect control circuit U1.
The beneficial effects of the utility model are: when battery is in storing or during transportation state, can manually disconnecting the power supply of baffle by K1, avoid storing or transportation in the electric weight of consuming cells.When battery pack is not used and when voltage reaches low pressure downscale protection value because of long-term storage; MCU detects the power supply that control circuit U1 could detect and disconnect P1 automatically; thereby guaranteed that baffle circuit can not continue the electric weight of consuming cells group again, avoided battery pack to continue battery pack to be with and to be had a strong impact on to zero-pressure from power consumption.When needs come into operation again, as long as press K1 to power circuit P1 power supply, MCU detects the normal rear conducting K2 automatically of control circuit U1 power on and realizes self-locking power supply, and now K1 can unclamp, and button automatically resets.
[accompanying drawing explanation]
Fig. 1 is the circuit diagram of the energy-saving protective circuit of a kind of lithium ion battery group of the utility model baffle.
[embodiment]
Please refer to shown in Fig. 1, below in conjunction with case study on implementation, the utility model is described in further detail.
The energy-saving protective circuit of the utility model lithium ion battery group baffle, it comprises that MCU detects control circuit U1, gating switch K1; diode D1; circuit controling switch K2, power circuit P1, battery pack E1 and the voltage sampling circuit being formed by voltage sample resistance R 1, R2 and K switch 3.
K1 is a kind of button reset switch as gating switch, can conducting during by it, be late for, and not conducting, in parallel with circuit controling switch K2 after its series connection D1.When pressing K1, K1, the conducting of D1 path, battery pack E1 provides voltage to power circuit P1.Power circuit P1 and circuit controling switch K2 are cascaded, and detect between control circuit U1 at circuit controling switch K2 and MCU.
Aforesaid power circuit P1 provides operating voltage for MCU detects control circuit U1, and 3,4 pin of circuit controling switch K2 are connected between power circuit P1 and battery pack E1, and its 1,2 pin is controlled by MCU and detects control circuit U1.Voltage sample resistance R 1 is the electrode input end power taking of battery E1 from 3 pin of K2, is used for providing for MCU testing circuit U1 the state of cell voltage, and MCU testing circuit U1 judges the state of battery by it.1,2 pin series connection of voltage sample resistance R 2 and K switch 3, is produced isolation signals and by 3,4 pin of K3, signal is input to MCU detection control circuit U1 by K3.R2, the voltage sampling circuit that K3 forms is used for detecting the closure state of K1
The operation principle of the energy-saving protective circuit of the utility model lithium ion battery group baffle is: press reset switch K1, now, battery pack E1 provides voltage by reset switch K1 for power circuit P1.Power circuit P1 starts working, and for MCU detects control circuit U1, provides rational operating voltage.R2 obtains voltage signal between D1 and K1, and produces isolation signals by K3, through 3,4 pin of K3, signal is transferred to MCU and detects control circuit U1.MCU detects after the normal work of control circuit U1, when 3 of K3 being detected, during signal that 4 pin provide, for 1 of circuit controling switch K2,2 pin provide a signal that allows its conducting, and 3,4 heels of K2 switch are according to 1,2 Continuity signal conducting, is communicated with battery pack E1 with power circuit P1 and voltage detecting resistance R 2.The power supply of whole circuit will keep by K2.When battery pack E1 is when applying for a long time in brownout state, voltage detecting resistance R 1 provides a signal for MCU detects control circuit U1, U1 carries out logic decision after this signal being detected, for 1,2 pin of K2 provides a cut-off signals, 3 of K2 switch, 4 heels are according to 1,2 cut-off signals is realized and being turn-offed, and battery pack E1 and power circuit P1 disconnect, and whole circuit quits work.
The energy-saving protective circuit of a kind of lithium ion battery group of the utility model baffle; be not restricted to described in specification and execution mode; therefore for the personnel of familiar field, can easily realize additional advantage and modification; therefore in the situation that do not deviate from the spirit and scope of the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown of describing.
Claims (3)
1. the energy-saving protective circuit of a lithium ion battery group baffle; it is characterized in that: it comprises that MCU detects control circuit U1; gating switch K1; circuit controling switch K2; power circuit P1; battery pack E1 and the voltage sampling circuit being formed by voltage sample resistance R 1, R2 and K switch 3; wherein; after gating switch K1 series diode D1, be connected in parallel with circuit controling switch K2; power circuit P1 and circuit controling switch K2 are cascaded, and detect between control circuit U1 at circuit controling switch K2 and MCU.
2. the energy-saving protective circuit of lithium ion battery group baffle according to claim 1, is characterized in that: described gating switch K1 is a kind of button reset switch.
3. the energy-saving protective circuit of lithium ion battery group baffle according to claim 1; it is characterized in that: described voltage sample resistance R 1 is connected on battery pack E1 and MCU detects between control circuit U1, it is used for detecting for MCU the state that control circuit U1 provides cell voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056769.0U CN203859499U (en) | 2014-01-29 | 2014-01-29 | Energy conservation and protection circuit for lithium-ion battery pack protection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056769.0U CN203859499U (en) | 2014-01-29 | 2014-01-29 | Energy conservation and protection circuit for lithium-ion battery pack protection board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859499U true CN203859499U (en) | 2014-10-01 |
Family
ID=51609338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056769.0U Expired - Fee Related CN203859499U (en) | 2014-01-29 | 2014-01-29 | Energy conservation and protection circuit for lithium-ion battery pack protection board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203859499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327061A (en) * | 2018-11-30 | 2019-02-12 | 中山市奥东电子科技有限公司 | A kind of battery feed circuit |
-
2014
- 2014-01-29 CN CN201420056769.0U patent/CN203859499U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327061A (en) * | 2018-11-30 | 2019-02-12 | 中山市奥东电子科技有限公司 | A kind of battery feed circuit |
| CN109327061B (en) * | 2018-11-30 | 2024-03-15 | 中山市奥东电子科技有限公司 | Battery power supply circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20141001 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20141001 |
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| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210428 Granted publication date: 20141001 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240129 Granted publication date: 20141001 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 |