CN200944526Y - Charging/discharging protection module of lithium power battery - Google Patents
Charging/discharging protection module of lithium power battery Download PDFInfo
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- CN200944526Y CN200944526Y CNU2006200758693U CN200620075869U CN200944526Y CN 200944526 Y CN200944526 Y CN 200944526Y CN U2006200758693 U CNU2006200758693 U CN U2006200758693U CN 200620075869 U CN200620075869 U CN 200620075869U CN 200944526 Y CN200944526 Y CN 200944526Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a charging/discharging protection module of lithium power battery and comprises a battery group comprising at least two series lithium power batteries and connected with a charger. The protection module is provided with an inspection chip with same numbers of lithium power battery series paths. A single path type lithium battery protection chip is used in the protection module. The conditions of implementing protection are break of upper and lower limit or occurrence of over-current/short-circuit of the end voltage of single battery. Each signal obtains the final protection signal by logical relations, i.e., protection is implemented when any lithium battery is in abnormal state, thereby improving safety and life-span of the lithium power battery and avoiding over-charging and over-discharging of single battery. The charging/discharging protection module of lithium power battery has a lower self power consumption and can be sealed into an intelligent lithium battery package combined with the series lithium battery group, having the advantages of small volume, light weight and reliable work.
Description
Technical field
The claimed technical scheme of the utility model relates to a kind of charge and discharge protecting module of lithium dynamical battery.
Background technology
In recent years, electric bicycle, scooter enter family in large quantity rapidly, and be popular in the city, and occupation rate of market is constantly soaring.According to incompletely statistics, China every year only electric bicycle output reached 5,000,000 because the rise of lithium dynamical battery industry, each electric motor car manufacturer of the whole nation all aims at the power lithium battery group to substitute traditional lead-acid battery power supply combination.Lithium electrical source of power combination is used on the electric vehicle and bicycle, have operating cost low, pollution-free, belong to environment-friendly products, meet the industrial policy of country.Country is in 863 Program, electric automobile research is placed on extremely remarkable position, uses the electronic mini-bus of lithium dynamical battery, electronic big bus has entered the trial production stage, use lithium dynamical battery electric bicycle, scooter mass marketed, market prospects are very wide.
At present, in the lithium dynamical battery charge-discharge controller, traditional power lithium battery group charge and discharge protection circuit is according to notebook computer, lithium battery power supply group protective circuits such as DVD are extended reference, in circuit, use and support 4 tunnel detection special chips at most, to the overvoltage of the batteries charging upper limit, the discharge lower limit is under-voltage detects protection with interior series connected battery group; Owing to all there is not the detection special chip of supporting more than 4 tunnel on the domestic and international market; and for the protection of multi-string battery group not corresponding with detecting the special chip way more than 4 tunnel; then need to use the dedicated test chip more than 2 to merge use, and be equipped with other peripheral circuit.As realize the protection of lithium power battery pack of one group of 7 tunnel series connection; then need to use 24 the tunnel to detect special chip; for guaranteeing the operate as normal of chip; unnecessary way will adopt other measure to handle; and function aspects can not satisfy; under-voltage protection value when the li-ion cell protection chip under-voltage protection value that adopts in the protective circuit can not satisfy the lithium dynamical battery discharge; can not effectively play the under-voltage protection effect; occurred safety issue in actual use, can't fundamentally comprehensively implement protection lithium dynamical battery.
In concrete technology implementation process,, adopt the possibility of general-purpose device forming circuit not exist fully because this most important prerequisite restriction of power consumption is worked under the condition of little power consumption all the time for guaranteeing protective circuit.If adopt other protective circuit, as Single-chip Controlling, then inevitably exist the power consumption of protective circuit own bigger, the more high shortcoming of cost, practical value is not high.
The utility model content
Technical problem to be solved in the utility model is; at the deficiencies in the prior art; a kind of charge and discharge protecting module of lithium dynamical battery is provided, when breaking through the bound set and overcurrent, short circuit, carries out the purpose of protection with the terminal voltage that reaches arbitrary single channel battery in the battery pack.
For solving the problems of the technologies described above, the technical solution of the utility model is that a kind of charge and discharge protecting module of lithium dynamical battery is characterized in that: comprise the battery pack that is connected with charger and is composed in series by the above lithium dynamical battery of two-way at least; Be provided with the detection chip that equates with the lithium dynamical battery way in the described protection module, the input of described detection chip links to each other with the two ends of lithium dynamical battery, its output is connected with level treatment circuit input, the output of level treatment circuit is connected with the switching circuit input with switching circuit input with by lock-in circuit respectively, and the end that switching circuit is exported is connected by sampling resistor and battery pack; Its other end is connected with load;
Described detection chip, be used for whole process detect in real time lithium dynamical battery both end voltage value and and sampling resistor sampling end voltage will overcharge, cross discharge signal and deliver to the level treatment circuit;
Described level treatment circuit; Be used to receive detection chip and send overcharging after synthetic, cross discharge signal, after treatment, output signal to switching circuit;
Described switching circuit is used for the logical signal that the incoming level treatment circuit is exported, and is switched on or switched off the charge and discharge loop;
Described lock-in circuit, be used for, overcurrent under-voltage, short-circuit protection when lithium dynamical battery after, the guard mode of locking protection module.
Single channel type li-ion cell protection chip is used for protection module.For carrying out the condition of protection, each road signal obtains final guard signal by the relation of logical to the terminal voltage of single channel battery when breaking through bound or overcurrent/short circuit and take place.Be that any joint lithium battery abnormal condition occurs and all protected.
A kind of charge and discharge protecting module of lithium dynamical battery; described level treatment circuit is made up of discharge level treatment circuit and charging level treatment circuit, and the input of discharge level treatment circuit, charging level treatment circuit is crossed the discharge signal output and overcharged signal output part and be connected with described detection chip respectively.
A kind of charge and discharge protecting module of lithium dynamical battery; described switching circuit is made up of the discharge metal-oxide-semiconductor and the charging metal-oxide-semiconductor of serial connection; the grid of discharge metal-oxide-semiconductor links to each other with the output of lock-in circuit; source electrode is connected with an end of sampling resistor and the over-current detection end of detection chip; the grid of charging metal-oxide-semiconductor is connected with charging level treatment circuit output, and its source electrode is connected with load or charger.
A kind of charge and discharge protecting module of lithium dynamical battery; described lock-in circuit is made up of divider resistance, " not gate " F1, non-conjunction YF, " not gate " F2; the two ends of divider resistance connect the negative terminal and the load of battery pack respectively; its minute, pressure side connected the input of non-conjunction YF by " not gate " F1; another input links to each other with the output of discharge level treatment circuit 5, and the output of non-conjunction YF links to each other with the grid of discharge metal-oxide-semiconductor by " not gate " F2.
A kind of charge and discharge protecting module of lithium dynamical battery, the model of described detection chip are S-8261.
A kind of charge and discharge protecting module of lithium dynamical battery, described overcurrent, short circuit sampling resistor are variable resistor.
A kind of charge and discharge protecting module of lithium dynamical battery, owing to adopt said structure, be provided with the detection chip that equates with lithium dynamical battery series connection way in the described protection module, the input of described detection chip links to each other with the two ends of lithium dynamical battery, its output is connected with the flat treatment circuit input of charge and discharge, the output of the flat treatment circuit of charge and discharge is connected with the switching circuit input with switching circuit input with by lock-in circuit respectively, and the end that switching circuit is exported is connected by sampling resistor and battery pack; Its other end is connected with load.Single channel type li-ion cell protection chip is used for protection module.For carrying out the condition of protection, each road signal obtains final guard signal by the relation of logical AND to the terminal voltage of cell when breaking through bound.Be that any joint lithium battery abnormal condition occurs and all protected.Improve the safety in utilization of lithium dynamical battery and the useful life of battery, stopped overcharging and over-discharge situation of cell up hill and dale.This charge and discharge protecting module of lithium dynamical battery is extremely low from power consumption, constitutes intelligent lithium battery bag with serial lithium battery group overall package, and it is little, in light weight to have a volume, characteristics such as reliable operation.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;
Fig. 1 is a kind of charge and discharge protecting module of lithium dynamical battery electrical block diagram of the utility model;
Fig. 2 is a lock-in circuit structural representation shown in Figure 1;
In Fig. 1, Fig. 2,1, battery pack; 2, lithium dynamical battery; 3, detection chip; 4, level treatment circuit; 5, discharge level treatment circuit; 6, charging level treatment circuit; 7, lock-in circuit; 8, switching circuit; 9, charging metal-oxide-semiconductor; 10, discharge metal-oxide-semiconductor; 11, sampling resistor; 12, load.
Embodiment
As shown in Figure 1 and Figure 2, a kind of charge and discharge protecting module of lithium dynamical battery comprises the battery pack 1 that is composed in series by six lithium dynamical batteries 2 that is connected with charger; Be provided with six detection chip 3 in the described protection module, the model of detection chip 3 is S-8241.One input of described detection chip 3 links to each other by the positive pole of resistance with corresponding lithium dynamical battery 2, another input is connected with lithium dynamical battery 2 negative poles, its output is connected with level treatment circuit 4 inputs, the output of level treatment circuit 4 is connected with importing with switching circuit 8 by lock-in circuit 7 with switching circuit 8 inputs respectively, and an end of switching circuit 8 outputs is connected with the B-end of battery pack 1 by sampling resistor 11; Its other end is connected with the P-end of load 12.Sampling resistor 11 is a variable resistor.According to the required flow valuve of crossing, sampling resistor 11 is selected suitable resistance.Described level treatment circuit 4 is made up of discharge level treatment circuit 5 and charging level treatment circuit 6, the AND gate circuit that level treatment circuit 4 is made up of diode and triode.The input of discharge level treatment circuit 5, charging level treatment circuit 6 is crossed discharge signal output D and is overcharged signal output part C and be connected with described detection chip 3 respectively.Described switching circuit is made up of discharge metal-oxide-semiconductor 10 and charging metal-oxide-semiconductor 9 that drain electrode links to each other, the grid of discharge metal-oxide-semiconductor 10 links to each other with the output of lock-in circuit 7, source electrode is connected with an end of sampling resistor 11 and the over-current detection end E of detection chip 3, the grid of charging metal-oxide-semiconductor 9 is connected with charging level treatment circuit 6 output B, and its source electrode is connected with the P-end of load 12 (or charger).
Described lock-in circuit 7 is made up of divider resistance R, " not gate " F1, non-conjunction YF, " not gate " F2, the two ends of divider resistance R connect the B-end of battery pack 1 and the P-end of load 12 respectively, its minute, pressure side connected the input of non-conjunction YF by " not gate " F1, another input links to each other with the output terminals A of discharge level treatment circuit 5, and the output of non-conjunction YF links to each other with the grid of discharge metal-oxide-semiconductor 10 by " not gate " F2.During battery pack 1 discharge, when an any lithium dynamical battery 2 generations are under-voltage, or entire circuit generation overcurrent/short circuit, when being the over-current detection end E＞200MV of detection chip 3, the D of discharge signal output excessively output low level signal in the detection chip 3 is to discharge level treatment circuit 5, the output terminals A output low level signal of discharge level treatment circuit 5 and process lock-in circuit are delivered to the grid of discharge metal-oxide-semiconductor 10, and discharge metal-oxide-semiconductor 10 turn-offs.Have no progeny in the pass, the B+ of battery pack 1 delivers to the P-end through overload 12, the P-end is high level, by divider resistance R, the high level of branch pressure side is a low level by the input that " not gate " F1 connects non-conjunction YF, NAND gate " the output high level of YF is by " not gate " F2 output low level signal, the operating state of locking discharge metal-oxide-semiconductor 10.During release, disconnecting consumers 12, P-are low level, and the input of non-conjunction YF is a high level, and the operating state of discharge metal-oxide-semiconductor 10 is determined in the logic of the output terminals A of discharge level treatment circuit 5.Charger is connected with the B+ end of battery pack 1 and the P-end of load 12.During battery pack 1 charging, when overpressure situation takes place any lithium dynamical battery 2, overcharge signal output part C output low level signal to charging level treatment circuit 6 in the detection chip 3, the output B output low level signal of charging level treatment circuit 6 is to the grid of the metal-oxide-semiconductor 9 that discharges, and charging metal-oxide-semiconductor 9 turn-offs.Each road signal obtains final guard signal by the relation of logical.Be that any joint lithium battery abnormal condition occurs and all protected.
In conjunction with the accompanying drawings and embodiments the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection range of the present utility model.
Claims (6)
1, a kind of charge and discharge protecting module of lithium dynamical battery is characterized in that: comprise the battery pack (1) that is connected with charger and is composed in series by the above lithium dynamical battery of two-way (2) at least; Be provided with the detection chip (3) that equates with lithium dynamical battery (2) way in the described protection module, the input of described detection chip (3) links to each other with the two ends of lithium dynamical battery (2), its output is connected with level treatment circuit (4) input, the output of level treatment circuit (4) respectively with switching circuit (8) input be connected with switching circuit (8) input by lock-in circuit (7), an end of switching circuit (8) output is connected with battery pack (1) by sampling resistor (11); Its other end is connected with load (12);
Described detection chip (3) is used to detect lithium dynamical battery (2) two ends charge and discharge magnitude of voltage and sampling resistor (11) sampling end voltage, will overcharge, cross discharge signal and deliver to level treatment circuit (4);
Described level treatment circuit (4); Be used to receive that detection chip (3) sends overcharges, cross discharge signal, and output signal to switching circuit (8);
Described switching circuit (8) is used for the logical signal that incoming level treatment circuit (4) is exported, and is switched on or switched off the charge and discharge loop;
Described lock-in circuit (7), be used for, overcurrent under-voltage, short-circuit protection when lithium dynamical battery (2) after, the guard mode of locking protection module.
2, a kind of charge and discharge protecting module of lithium dynamical battery according to claim 1; it is characterized in that: described level treatment circuit (4) is made up of discharge level treatment circuit (5) and charging level treatment circuit (6), and the input of discharge level treatment circuit (5), charging level treatment circuit (6) is crossed discharge signal output (D) and overcharged signal output part (C) and be connected with described detection chip (3) respectively.
3, a kind of charge and discharge protecting module of lithium dynamical battery according to claim 1; it is characterized in that: described switching circuit (8) is made up of the discharge metal-oxide-semiconductor (10) and the charging metal-oxide-semiconductor (9) of serial connection; the grid of discharge metal-oxide-semiconductor (10) links to each other with the output of lock-in circuit (7); source electrode is connected with an end of sampling resistor (11) and the over-current detection end (E) of detection chip (3); the grid of charging metal-oxide-semiconductor (9) is connected with charging level treatment circuit (6) output (B), and its source electrode is connected with load (12) or charger.
4; according to claim 1 or 3 described a kind of charge and discharge protecting module of lithium dynamical battery; it is characterized in that: described lock-in circuit (7) is by divider resistance (R); " not gate " (F1); non-conjunction (YF); " not gate " (F2) formed; the two ends of divider resistance (R) connect the negative terminal and the load (12) of battery pack (1) respectively; its minute, pressure side (F1) connected an input of non-conjunction (YF) by " not gate "; another input links to each other with the output (A) of discharge level treatment circuit (5), and the output of non-conjunction (YF) (F2) links to each other with the grid of discharge metal-oxide-semiconductor (10) by " not gate ".
5, according to claim 1 or 2 or 3 described a kind of charge and discharge protecting module of lithium dynamical battery, it is characterized in that: the model of described detection chip (3) is S-8261.
6, a kind of charge and discharge protecting module of lithium dynamical battery according to claim 1 is characterized in that: described sampling resistor (11) is a variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200758693U CN200944526Y (en) | 2006-09-01 | 2006-09-01 | Charging/discharging protection module of lithium power battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200758693U CN200944526Y (en) | 2006-09-01 | 2006-09-01 | Charging/discharging protection module of lithium power battery |
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| CN200944526Y true CN200944526Y (en) | 2007-09-05 |
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| CNU2006200758693U Expired - Fee Related CN200944526Y (en) | 2006-09-01 | 2006-09-01 | Charging/discharging protection module of lithium power battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860066A (en) * | 2009-04-03 | 2010-10-13 | 索尼公司 | Battery pack and charging method |
| WO2011103827A3 (en) * | 2011-04-18 | 2012-03-22 | 华为技术有限公司 | Over-current protection method for lithium battery and device thereof |
| CN101394080B (en) * | 2007-09-21 | 2012-12-19 | 深圳市比克电池有限公司 | Battery pack protection circuit |
| CN104539000A (en) * | 2014-12-08 | 2015-04-22 | 惠州市蓝微电子有限公司 | Multi-battery-pack lithium electric tool discharge control circuit and mower |
| CN106410892A (en) * | 2016-09-14 | 2017-02-15 | 东软集团股份有限公司 | Battery protection method, device and system |
| CN107843854A (en) * | 2017-12-14 | 2018-03-27 | 昆山通达测科电子科技有限公司 | A kind of lithium battery overcharges, Cross prevention and the method for testing of time delay |
| ES2768031A1 (en) * | 2018-12-19 | 2020-06-19 | Garcia Diego Jose Vergara | BATTERY CHARGE CONTROL AND PROTECTION SYSTEM (Machine-translation by Google Translate, not legally binding) |
-
2006
- 2006-09-01 CN CNU2006200758693U patent/CN200944526Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394080B (en) * | 2007-09-21 | 2012-12-19 | 深圳市比克电池有限公司 | Battery pack protection circuit |
| CN101860066A (en) * | 2009-04-03 | 2010-10-13 | 索尼公司 | Battery pack and charging method |
| WO2011103827A3 (en) * | 2011-04-18 | 2012-03-22 | 华为技术有限公司 | Over-current protection method for lithium battery and device thereof |
| CN104539000A (en) * | 2014-12-08 | 2015-04-22 | 惠州市蓝微电子有限公司 | Multi-battery-pack lithium electric tool discharge control circuit and mower |
| CN106410892A (en) * | 2016-09-14 | 2017-02-15 | 东软集团股份有限公司 | Battery protection method, device and system |
| CN107843854A (en) * | 2017-12-14 | 2018-03-27 | 昆山通达测科电子科技有限公司 | A kind of lithium battery overcharges, Cross prevention and the method for testing of time delay |
| ES2768031A1 (en) * | 2018-12-19 | 2020-06-19 | Garcia Diego Jose Vergara | BATTERY CHARGE CONTROL AND PROTECTION SYSTEM (Machine-translation by Google Translate, not legally binding) |
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Legal Events
| 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: 20070905 Termination date: 20100901 |