CN201364940Y - Novel multifunctional lithium ion battery pack and protective circuit thereof - Google Patents

Novel multifunctional lithium ion battery pack and protective circuit thereof Download PDF

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Publication number
CN201364940Y
CN201364940Y CNU2008201806829U CN200820180682U CN201364940Y CN 201364940 Y CN201364940 Y CN 201364940Y CN U2008201806829 U CNU2008201806829 U CN U2008201806829U CN 200820180682 U CN200820180682 U CN 200820180682U CN 201364940 Y CN201364940 Y CN 201364940Y
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China
Prior art keywords
battery
battery unit
discharge
circuit module
interface
Prior art date
Application number
CNU2008201806829U
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Chinese (zh)
Inventor
蔡道华
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蔡道华
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Priority to CNU2008201806829U priority Critical patent/CN201364940Y/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model relates to a novel multifunctional lithium ion battery pack and a protective circuit thereof. The novel multifunctional lithium ion battery pack comprises one or more battery units which can be connected in parallel or in series; each battery unit is provided with a relatively independent voltage detection circuit module; the voltage detection circuit module can detect voltage information of the battery unit; an output signal of each battery unit circuit is controlled by an output signal of the last battery unit; battery packs with different voltages and capacities can be combined by freely connecting the battery units in series and in parallel modes; and the battery pack is provided a common positive electrode, a common negative electrode, a charge-discharge control signal input interface and a charge-discharge control signal output interface. The utility model has the advantages that the battery packs with various voltages and capacities can be combined by different combining modes, thereby greatly expanding the service range of the battery pack and being beneficial to popularize products; and the production cost is low.

Description

A kind of new multi-purpose lithium battery group and protective circuit thereof
Technical field
The utility model relates to a kind of lithium battery group, especially can change compound mode arbitrarily, is combined into a kind of new multi-purpose lithium battery group and the protective circuit thereof of different capabilities and voltage.
Background technology
Invented lead-acid battery before more than 100 years, rechargeable battery is with regard in the life that is applied to people because use cost is cheap widely.But continuous progress along with scientific and technological level, can produce in recent years that quality is lighter, volume is littler, energy density is higher, the lithium battery of longer service life, thereby be used as the power supply of portable battery such as mobile phone, notebook computer, electric tool widely.
Rechargeable battery in use overcharges, overdischarge and overcurrent all can influence the useful life of battery, even cause danger.So reliable use for battery; battery preferably installs the protective circuit plate additional; especially lithium battery all must install protective circuit additional; therefore each big IC manufacturer has all released and has been suitable for saving four batteries integrated protection chips in the world; but for the more protection of multi-string battery group; need a plurality of battery integrated protection chips and more peripheral circuit combination; the circuit complexity; the cost height; so employed baffle of lithium battery group; all be to be produced on the circuit board, baffle is provided with the voltage detection terminal of each batteries and discharges and recharges control switch.Usually; when producing the lithium battery group, need combine battery pack earlier, then the change in voltage by each batteries in the baffle monitoring battery pack that links together with battery pack; when abnormal conditions such as overvoltage, under-voltage, overcurrent occurring, can in time turn-off the output of battery pack.
Because the restriction of baffle, so the lithium battery group of each voltage all needs corresponding a kind of baffle, thereby capacity, high-voltage battery group are made difficulty greatly, and cost is also high.Battery be in case combination also can't be changed the battery specification, thereby the end user uses very inconveniently, makes high voltage, jumbo lithium battery group use and be subjected to greatly limiting, in a lot of fields so far also at operating weight height, lead-acid battery that the big capacity of volume is low.
The utility model content
The purpose of this utility model provides a kind of new multi-purpose lithium battery group and protective circuit thereof, and its compound mode to existing lithium battery has been made important breakthrough.Use this brand-new circuit structure and compound mode, what the high-capacity lithium battery combination will become is very easy to, as playing with building blocks, the user is the specification and the shape of random conversion battery pack as required, such as one 2 and the 8 24V10Ah lithium battery groups of going here and there, need not to change battery and circuit, only need to change connection mode, just can simply be combined into the lithium battery group of the 12V20AH or 1 and 16 48V4AH that go here and there of 4 and 4 strings, expand its scope of application greatly.Also because only need to produce the battery unit and the protection control switch of limited several specifications, production cost also can reduce greatly in producer.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of new multi-purpose lithium battery group and protective circuit thereof; comprise at least one relatively independent battery unit, voltage detecting circuit module and a charge and discharge protection control circuit module; a voltage detecting circuit module in parallel on the described battery unit; described battery unit outer series connection one a charge and discharge protection control circuit module and a load blocks, described load blocks can be charger.
Described battery pack can comprise a battery unit, also can comprise a plurality of battery units, can be in parallel between each battery unit, also can connect.
Described battery unit has an anode interface and a negative pole interface, and battery unit is provided with two signal wire interfaces, and wherein a signal wire interface is exported charging signals, another signal wire interface output discharge signal.
Be series connection between the voltage detecting circuit module of described each battery unit parallel connection, a plurality of voltage detecting circuit modules that are cascaded have constituted the protective circuit of battery pack.Described voltage detecting circuit module mainly comprises a protection application of logic circuit module, one charging control input interface, a discharge control input interface, a charging control output interface and a discharge control output interface are arranged on the described protection application of logic circuit module, charging control input interface connects the charging control output interface of a last battery unit, and the charging signals of output interface output is controlled in the charging that receives a last battery unit, discharge control input interface connects the discharge control output interface of a last battery unit, and receives the discharge signal of the output of a last battery unit; Charging on this battery unit control output interface connects the charging control input interface of next battery unit, and the charge information that this battery unit is received and the charge information of himself the charging control input interface of exporting to next battery unit; Discharge on this battery unit control output interface connects the discharge control input interface of next battery unit, and the discharge information that this battery unit is received and the discharge information of himself the discharge control input interface of exporting to next battery unit; The output signal of each battery unit circuit is controlled by the output signal of a battery unit.
Battery unit is made up of at least one battery, the series-parallel system combination arbitrarily of each battery, and a voltage monitoring module in parallel and an electric weight balance module on the every battery, each voltage monitoring module and electric weight balance module all are connected to the protection application of logic circuit module.
Described charge and discharge protection control circuit module comprises temperature detect switch (TDS), overcurrent switch, is full of detection, short-circuit detecting, balanced control, charge switch and discharge switch; described charge and discharge protection control circuit module is concatenated in the voltage detecting circuit by charging control input interface and discharge control input interface, and the control logic module in the charge and discharge protection control circuit module connects temperature detect switch (TDS), overcurrent switch respectively, is full of detection, short-circuit detecting, balanced control, charge switch and discharge switch.The use of described charge and discharge control circuit module only links to each other with the positive and negative electrode of battery pack, and the power supply of himself is by the battery unit power supply that links to each other.
The beneficial effect of new multi-purpose lithium battery group described in the utility model and protective circuit thereof is: based on the battery cell design of this novel battery protective circuit; use the protective circuit of this structure; can produce the universal battery monomer of appropriate size; battery cell is relatively independent, as long as a battery charging and discharging protection of cooperation control circuit just can operate as normal.
Use this method, the battery cell that only needs a kind of specification, just can be combined into the battery pack of different voltage different capabilities by any series-parallel system, the user is the connected mode of specification, shape and the series and parallel of random conversion battery pack as required, to be combined into the battery pack of multiple voltage, capacity, expand its scope of application and application greatly, helped the popularization of product.Also because only need to produce the battery unit and the protection control switch of limited several specifications, production cost also can reduce greatly, has good market potential in producer, promotes market economic development, meets the social development demand.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof;
Fig. 2 is the schematic diagram of the protective circuit of the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof;
Fig. 3 is the schematic diagram of the voltage detecting circuit module of the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof;
Fig. 4 is the schematic diagram of the charge and discharge protection control circuit module of the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof.
Among the figure:
1, battery unit; 2, charge and discharge protection control circuit module; 3, load; 4, battery; 5, voltage detecting circuit module; 6, anode interface; 7, negative pole interface; 8, signal wire interface; 9, voltage monitoring module; 10, electric weight balance module; 11, protection application of logic circuit module; 12, charging control input interface; 13, discharge control input interface; 14, charging control output interface; 15, discharge control output interface.
Embodiment
As illustrated in fig. 1 and 2, the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof, comprise the identical relatively independent battery unit of four specifications 1, four voltage detecting circuit modules 5 and charge and discharge protection control circuit module 2, described wherein two battery unit parallel connections, remain two battery unit parallel connections, be series connection between described two groups of parallel circuitss; Described battery unit outer series connection one a charge and discharge protection control circuit module 2 and a load blocks 3, described load blocks 3 can be charger.
Described four relatively independent battery units 1 can all be connected.
Described four relatively independent battery units 1 can be all in parallel.
A voltage detecting circuit module 5 in parallel on described each battery unit is series connection between each voltage detecting circuit module, series connection charge and discharge protection control circuit module 2 in the series circuit that each voltage detecting circuit module forms, and the protective circuit of formation battery pack.Each voltage detecting circuit all detects the voltage status in each the crosstalk pond in this battery unit, to judge whether normally charge and discharge of battery, when voltage exceeds capping, can finish the charge capacity equilibrium.Simultaneously, this circuit changes the output state of this element circuit also according to the signal of the voltage detecting circuit of last a string battery unit output.
Described battery pack can comprise a battery unit, also can comprise a plurality of battery units, and each battery unit both can be in parallel, also can connect, but each battery unit all has a relatively independent voltage detecting circuit module 5.Simultaneously, it can be by being combined into battery unit the battery pack of different voltage different capabilities in any series and parallel mode, but the battery strings parallel connection should be carried out according to " the identical battery of voltage can be in parallel; the principle that the battery that capacity is identical can be connected ", and this battery pack has and has public positive pole and negative pole and one to discharge and recharge control signal input interface and one to discharge and recharge the control signal output interface.
Shown in Fig. 2 and 3, the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof, described battery unit 1 has an anode interface 6 and a negative pole interface 7, battery unit is provided with two signal wire interfaces 8, wherein a signal wire interface is exported charging signals, another signal wire interface output discharge signal; If use the advanced digital bus interface, also can design various additional functions as required, control such as temperature detection, voltage demonstration, capacity demonstration, circuit dormancy control, the discharge electricity amount transfer equilibrium of battery cell etc.
A voltage detecting circuit module 5 in parallel on the described battery unit; described voltage detecting circuit module 5 mainly comprises a protection application of logic circuit module 11, and a charging control input interface 12, a discharge control input interface 13, a charging control output interface 14 and a discharge control output interface 15 are arranged on the described protection application of logic circuit module 11.Charging control input interface 12 connects the charging control output interface 14 of a last battery unit, and the charging signals of output interface 14 outputs is controlled in the charging that receives a last battery unit, discharge control input interface 13 connects the discharge control output interface 15 of a last battery unit, and receives the discharge signal of the output of a last battery unit; Charging on this battery unit control output interface 14 connects the charging control input interface 12 of next battery unit, and the charge information that this battery unit is received and the charge information of himself the charging control input interface 12 of exporting to next battery unit; Discharge on this battery unit control output interface 15 connects the discharge control input interface 13 of next battery unit, and the discharge information that this battery unit is received and the discharge information of himself the discharge control input interface 13 of exporting to next battery unit.The voltage detecting circuit of battery unit is little power consumption, cheaply, and the normal power consumption of voltage detecting circuit approximately has only 10UA, and the protective circuit power consumption of using with common single battery is the same.
The voltage detecting circuit module 5 of each battery unit itself except detecting this battery cell voltage, also plays the signal relay effect, its signal output electric and on a battery unit isolate.Like this, the battery unit of any amount can make up by serial or parallel connection, but the voltage of final output signal only depends on the voltage of last battery unit.This circuit can be widely used in various lithium batteries or rechargeable battery pack such as other plumbic acid, ni-mh.
Battery unit 1 is made up of four batteries, and the battery in the battery unit 1 is all connected, and a voltage monitoring module 9 in parallel and an electric weight balance module 10 on the every battery, each voltage monitoring module 9 and electric weight balance module 10 all are connected to protection application of logic circuit module 11.
As shown in Figure 4; the utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof; described filling; discharge prevention control circuit module 2 comprises temperature detect switch (TDS); the overcurrent switch; be full of detection; short-circuit detecting; balanced control; charge switch and discharge switch; described filling; discharge prevention control circuit module 2 is concatenated in the voltage detecting circuit module 5 by charging control input interface 12 and discharge control input interface 13, fills; control logic module in the discharge prevention control circuit module 2 connects temperature detect switch (TDS) respectively; the overcurrent switch; be full of detection; short-circuit detecting; balanced control; charge switch and discharge switch.The use of described charge and discharge control circuit module 2 only links to each other with the positive and negative electrode of battery pack, the power supply of himself is by the battery unit power supply that links to each other, owing to adopted powerful MOSFET pipe to drive, power consumption is extremely low, can be only by the output signal power supply of battery unit, also integrated simultaneously safety related functions such as current detecting, temperature switch.
Described battery unit 1 can comprise a batteries; also can comprise multiple batteries; each battery both can be in parallel; also can connect; but every batteries all has one to overcharge with overdischarge and press monitoring modular and to overcharge and overdischarge amount balance module; the output signal of its circuit is controlled by the output signal of a battery unit; the public charge and discharge switch of battery unit output signal control of battery pack least significant end; under-voltage or the overvoltage signal of any one battery unit output; other all subordinate's battery units that are in series with it all can be exported under-voltage or overvoltage signal; finally be charge-discharge protection circuit charge closing or discharge switch; like this by voltage detecting circuit module 5 and protection are controlled the design that short circuit separates; make that only specification battery unit of need just can be by simple connection in series-parallel; be combined into the high-capacity lithium battery group of plurality of specifications, simplified the compound mode of large-capacity battery pack greatly.
Large-capacity battery pack is filled by any a plurality of baby battery group unit and one; discharge prevention control circuit module 2 is formed; each battery unit contains a battery voltage detection circuit module 5; every voltage detecting circuit module 5 is provided with plurality of voltages monitoring modular 9; electric weight balance module 10; go up the under-voltage and overvoltage signal output coupling circuit in a string battery overvoltage and under-voltage signal input coupling circuit and this unit; fill; discharge prevention control circuit module 2 comprises temperature detection; over-current detection; balanced control; charge switch; discharge switch; the output signal of minimum voltage battery unit is coupled on the charge-discharge control circuit, is combined into a complete large-capacity battery pack.
If the charge and discharge control signal of battery unit is input as low level, perhaps the battery unit internal cell has overvoltage or under-voltage, the output of then charge and discharge control signal also is low level, have only control signal to be input as high level, and the battery unit internal cell does not have overvoltage or under-voltage, and the control output signal is only high level.
The utility model embodiment described new multi-purpose lithium battery group and protective circuit thereof when making, are carried out serial or parallel connection with a joint or multiple batteries, are combined into a battery unit 1, and on this battery unit a voltage detecting circuit module 5 in parallel; With a plurality of relatively independent same size battery units serial or parallel connection in any way; and the voltage detecting circuit module 5 on each battery unit connected one by one; on its series circuit, connect a charge and discharge protection control circuit module 2 simultaneously, thereby be combined into a battery pack.It can battery unit 1 all the modes of series connection form a large-capacity battery pack, also can battery unit 1 modes all in parallel form a high-voltage battery group, mode that can also the combination of battery unit series and parallel forms a high voltage, jumbo battery pack.This battery pack in use, each battery unit all is subjected to the control of the voltage detecting circuit module 5 of a battery unit, all will make it quit work if any battery unit breaks down; But, make battery unit relatively independent, when breaking down owing on each battery unit a voltage detecting circuit module 5 is arranged all, can detect each battery unit respectively, find out the fail battery unit, it can be taken down or keeps in repair, and can not damage other battery unit.
Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection range of the present utility model.

Claims (5)

1; a kind of new multi-purpose lithium battery group and protective circuit thereof; comprise the battery unit that at least one is relatively independent; voltage detecting circuit module and one fill; the discharge prevention control circuit module; the outer series connection one of the described battery unit that links together is filled; a discharge prevention control circuit module and a load blocks; described filling; the discharge prevention control circuit module is concatenated in the voltage detecting circuit by charging control input interface and discharge control input interface; fill; control logic module in the discharge prevention control circuit module connects temperature detect switch (TDS) respectively; the overcurrent switch; be full of detection; short-circuit detecting; balanced control; charge switch and discharge switch; it is characterized in that: a difference voltage detecting circuit module in parallel on each battery unit; be series connection between described each voltage detecting circuit module; the a plurality of voltage detecting circuit modules that are cascaded have constituted the protective circuit of battery pack, and the output signal of each battery unit circuit is controlled by the output signal of a battery unit.
2, new multi-purpose lithium battery group according to claim 1 and protective circuit thereof, it is characterized in that: the voltage detecting circuit module mainly comprises a protection application of logic circuit module, one charging control input interface, a discharge control input interface, a charging control output interface and a discharge control output interface are arranged on the protection application of logic circuit module, charging control input interface connects the charging control output interface of a last battery unit, and discharge control input interface connects the discharge control output interface of a last battery unit; Charging control output interface connects the charging control input interface of next battery unit; Discharge control output interface connects the discharge control input interface of next battery unit.
3, new multi-purpose lithium battery group according to claim 1 and protective circuit thereof is characterized in that: battery pack can comprise a battery unit, also can comprise a plurality of battery units, can be in parallel between each battery unit, also can connect.
4, according to claim 1 or 3 described new multi-purpose lithium battery group and protective circuits thereof; it is characterized in that: battery unit has an anode interface and a negative pole interface; battery unit is provided with two signal wire interfaces; wherein a signal wire interface is exported charging signals, another signal wire interface output discharge signal.
5, according to claim 1,2,3 or 4 described new multi-purpose lithium battery group and protective circuits thereof; it is characterized in that: battery unit is made up of at least one battery; the series-parallel system combination arbitrarily of each battery; a voltage monitoring module in parallel and an electric weight balance module on the every battery, each voltage monitoring module and electric weight balance module all are connected to the protection application of logic circuit module.
CNU2008201806829U 2008-12-08 2008-12-08 Novel multifunctional lithium ion battery pack and protective circuit thereof CN201364940Y (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102163756A (en) * 2010-02-24 2011-08-24 新德科技股份有限公司 Lithium battery module
CN102456914A (en) * 2010-12-31 2012-05-16 深圳市海盈科技有限公司 Lithium ion battery pack system suitable for power electric car
CN102570582A (en) * 2010-12-10 2012-07-11 深圳市凯旺电子有限公司 Multi-purpose intelligent power module
CN102656742A (en) * 2009-12-24 2012-09-05 丰田自动车株式会社 Air battery system
WO2013010319A1 (en) * 2011-07-19 2013-01-24 长园科技实业股份有限公司 Balance protection device for battery modules in parallel connection
CN103280851A (en) * 2013-05-20 2013-09-04 蔡伟平 Modular battery management device
CN103311561A (en) * 2012-03-06 2013-09-18 北京联动天翼科技有限公司 Apparatus and method for preparing high-capacity battery pack through parallel connection of low-capacity batteries
CN105216692A (en) * 2015-08-27 2016-01-06 无锡伊佩克科技有限公司 A kind of anti-child based on stabilized power source forgets the safety reminding device in car
CN105470596A (en) * 2015-06-30 2016-04-06 巫立斌 Method for reducing power consumption of lithium battery protection board
CN105790330A (en) * 2014-12-24 2016-07-20 杭州耕耘电子有限公司 Lithium battery pack management system capable of supporting parallel connection
CN106251587A (en) * 2016-08-24 2016-12-21 无锡卓信信息科技股份有限公司 Anti-driver based on stabilized power source is the safety reminding device of sleeping poisoning in car
CN107276156A (en) * 2017-06-22 2017-10-20 正阳实业投资有限公司 The electric power system of self-adjusting voltage
US10110025B2 (en) 2016-01-26 2018-10-23 Microsoft Technology Licensing, Llc Enhanced parallel protection circuit
CN109752658A (en) * 2017-11-03 2019-05-14 致茂电子(苏州)有限公司 Battery tester and battery testing method
US10944274B2 (en) 2018-01-19 2021-03-09 Microsoft Technology Licensing, Llc Ideal diode function implemented with existing battery protection FETs

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102656742B (en) * 2009-12-24 2014-12-03 丰田自动车株式会社 Air battery system
CN102656742A (en) * 2009-12-24 2012-09-05 丰田自动车株式会社 Air battery system
CN102163756A (en) * 2010-02-24 2011-08-24 新德科技股份有限公司 Lithium battery module
CN102570582A (en) * 2010-12-10 2012-07-11 深圳市凯旺电子有限公司 Multi-purpose intelligent power module
CN102456914B (en) * 2010-12-31 2015-09-09 深圳市海盈科技股份有限公司 A kind ofly be applicable to the automobile-used lithium ion battery pack system of power electric
CN102456914A (en) * 2010-12-31 2012-05-16 深圳市海盈科技有限公司 Lithium ion battery pack system suitable for power electric car
WO2013010319A1 (en) * 2011-07-19 2013-01-24 长园科技实业股份有限公司 Balance protection device for battery modules in parallel connection
CN103311561A (en) * 2012-03-06 2013-09-18 北京联动天翼科技有限公司 Apparatus and method for preparing high-capacity battery pack through parallel connection of low-capacity batteries
CN103311561B (en) * 2012-03-06 2015-11-25 北京联动天翼科技有限公司 Small-capacity cells parallel connection is adopted to realize the apparatus and method of large-capacity battery pack
CN103280851A (en) * 2013-05-20 2013-09-04 蔡伟平 Modular battery management device
CN105790330A (en) * 2014-12-24 2016-07-20 杭州耕耘电子有限公司 Lithium battery pack management system capable of supporting parallel connection
CN105470596A (en) * 2015-06-30 2016-04-06 巫立斌 Method for reducing power consumption of lithium battery protection board
CN105216692A (en) * 2015-08-27 2016-01-06 无锡伊佩克科技有限公司 A kind of anti-child based on stabilized power source forgets the safety reminding device in car
US10110025B2 (en) 2016-01-26 2018-10-23 Microsoft Technology Licensing, Llc Enhanced parallel protection circuit
CN106251587A (en) * 2016-08-24 2016-12-21 无锡卓信信息科技股份有限公司 Anti-driver based on stabilized power source is the safety reminding device of sleeping poisoning in car
CN107276156A (en) * 2017-06-22 2017-10-20 正阳实业投资有限公司 The electric power system of self-adjusting voltage
CN107276156B (en) * 2017-06-22 2020-06-05 正阳实业投资有限公司 Power supply system capable of self-adjusting voltage
CN109752658A (en) * 2017-11-03 2019-05-14 致茂电子(苏州)有限公司 Battery tester and battery testing method
US10944274B2 (en) 2018-01-19 2021-03-09 Microsoft Technology Licensing, Llc Ideal diode function implemented with existing battery protection FETs

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