CN103762623B - A kind of lithium battery management system integrated circuit - Google Patents
A kind of lithium battery management system integrated circuit Download PDFInfo
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- CN103762623B CN103762623B CN201310715217.6A CN201310715217A CN103762623B CN 103762623 B CN103762623 B CN 103762623B CN 201310715217 A CN201310715217 A CN 201310715217A CN 103762623 B CN103762623 B CN 103762623B
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Abstract
The present invention relates to a kind of lithium battery management system integrated circuit, comprise high pressure simulation detection module, for detection and the protecting control of lithium battery group voltage, high pressure simulation detection module comprises the battery voltage sensing module of the voltage for detecting described lithium battery group, the low voltage logic control module be connected with described battery voltage sensing module; Low voltage microcontroller module, processes from the data of described high pressure simulation detection module and the monitoring to system.Compared with prior art; tool of the present invention has the following advantages: greatly reduce ic component quantity; meet Control protection functions such as comprising the detection of various many string number lithium ion battery voltage, temperature detection, charging control, control of discharge, battery capacity instruction, motor speed governing; the protecting control application of many string number electric tool of lithium battery can be met; the very big optimization of realizing circuit; and reduce cost, improve circuit reliability, and stand-by power consumption is low.
Description
Technical field
The present invention relates to a kind of integration integrated circuits technical field, specifically a kind of lithium battery management system integrated circuit.
Background technology
Current lithium battery applications is day by day wide, and along with deepening continuously of application, the application of high string number lithium battery group also gets more and more.Along with the increase of string number, component number is more and more, application circuit gets over complexity, and cost is high, reliability decrease.Connection in series-parallel uses the problem, fail safe, battery electric quantity estimation difficulty etc. that cause, and dissimilar battery behavior also differs greatly.At present, battery management system is functional, and reliability, all there is considerable progress the aspect such as stability and practicality, but the speed gathered and precision or undesirable, but manufacturing cost is larger, is difficult to popularization.Battery management system is exactly mainly the utilance in order to improve battery, prevents over-charging of battery from crossing and puts, and extends the useful life of battery, the state of monitoring battery.
For tackling dissimilar battery and dissimilar load; more requirement is proposed for optimum configurations, multi-functional, tracing record etc. can be facilitated; present invention accomplishes above requirement; greatly reduce circuit components quantity, meet and comprise the Control protection functions such as various multi-string lithium ion battery voltage detecting, temperature detection, charging control, control of discharge, battery capacity instruction, motor speed governing.Therefore, high-performance, the solution integration of many string number li-ion cell protections more and more draws attention, and greatly can reduce circuit cost, the standardization of raising scheme, shortening construction cycle, therefore has very high using value.
Summary of the invention
For above-mentioned prior art, the technical problem to be solved in the present invention is: provide a kind of lithium battery management system integrated circuit, reduces circuit cost, improves reliability, shortens the R&D cycle.
In order to solve the problem, lithium battery management system integrated circuit of the present invention, comprise high pressure simulation detection module, for detection and the protecting control of lithium battery group voltage, this high pressure simulation detection module comprises: cell voltage detection unit, being connected with described lithium battery group, for detecting the voltage of described lithium battery group, being connected to the Single port of described integrated circuit;
Low voltage logic control module, is connected with described cell voltage detection unit, and carries out control and scheduling co-design according to detected external data to peripheral circuit;
Low voltage microcontroller module, is connected with described high pressure simulation detection module, for the treatment of from the data of described high pressure simulation detection module and the monitoring to whole system.
Preferably, described low voltage logic control module comprises current detecting and protected location, is connected with described battery voltage sensing module, and inside is integrated with big current short-circuit protection, load detecting, charging activation triple functions multiplexing port;
Charge-discharge control unit, is connected with protected location with described current detecting, receives the signal that described current detecting and protected location export, and exports the control signal of correspondence to integrated circuit Single port, for the break-make of Control peripheral circuit metal-oxide-semiconductor.
Preferably, described low voltage microcontroller module comprises MCU unit, for the detection of cell voltage, electric current and temperature, and carries out corresponding control according to optimum configurations;
A/D converter, for converting the external analog signal received to digital signal;
Timer units, controls for timing and pulse width modulation.
Preferably, described low voltage logic control module also comprises WatchDog Timer, and for preventing MCU from crashing, its clock source is provided by inner low speed RC;
Register, the control signal that buffer memory microcontroller sends out, exports to battery voltage sensing module, current detecting and protected location, WatchDog Timer.
Preferably, described lithium battery management system integrated circuit has multiple pin, comprises battery voltage detection pin, microcontroller supply pin, discharge and recharge MOS control pin, battery current detection pin, load condition pin and multiple I/O control pin.
Preferably, described lithium battery management system integrated circuit can detect 1 ~ 6 joint lithium battery voltage, and can be realized the protecting control application of 3 ~ 6 batteries by the selection of pin, also can detect separately the voltage of multi-series lithium battery entirety.
Preferably, described lithium battery management system integrated circuit is provided with the pin that direct pulse width modulation controls driven MOS pipe, can be used for the speed regulating control of DC DC series excitation formula motor.
Preferably, described lithium battery management system integrated circuit can be applied to the back-up source, electric bicycle power supply, electronic toy power supply, the power supply of medical equipment that employ lithium battery.
Compared with prior art; tool of the present invention has the following advantages: be integrated into by the circuit of lithium battery management system in a slice integrated circuit; greatly reduce ic component quantity; meet Control protection functions such as comprising the detection of various many string number lithium ion battery voltage, temperature detection, charging control, control of discharge, battery capacity instruction, motor speed governing; the protecting control application of many string number electric tool of lithium battery can be met; the very big optimization of realizing circuit; and reduce cost; improve circuit reliability, and stand-by power consumption is low.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of lithium battery management system integrated circuit of the invention process.
Fig. 2 is the application circuit of lithium battery management system integrated circuit of the invention process.
Fig. 3 is the another kind of application circuit of lithium battery management system integrated circuit of the invention process.
Embodiment
In order to allow those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, a kind of lithium battery management system integrated circuit, comprises the specific embodiment of the present invention one
High pressure simulation detection module 1, for detection and the protecting control of lithium battery group voltage, this high pressure simulation detection module comprises: cell voltage detection unit 11, is connected with lithium battery group, for detecting the voltage of lithium battery group, is connected to the Single port of integrated circuit;
Low voltage logic control module 12, is connected with cell voltage detection unit 11, and carries out control and scheduling co-design according to detected external data to peripheral circuit;
Low voltage microcontroller module 2, is connected with high pressure simulation detection module 1, for the treatment of the data from high pressure simulation detection module 1 and the monitoring to whole system.
Wherein, low voltage logic control module 12 comprises current detecting and protected location 121, is connected with battery voltage sensing module 11, and inside is integrated with big current short-circuit protection, load detecting, charging activation triple functions multiplexing port;
Charge-discharge control unit 122, is connected with protected location 121 with described current detecting, and received current detects the signal exported with protected location 121, and exports the control signal of correspondence to integrated circuit Single port, for the break-make of Control peripheral circuit metal-oxide-semiconductor
Wherein, low voltage microcontroller module comprises MCU unit 21, for the detection of cell voltage, electric current and temperature, and carries out corresponding control according to optimum configurations;
A/D converter 22, for converting the external analog signal received to digital signal;
Timer units 23, controls for timing and pulse width modulation.
Wherein, low voltage logic control module 12 also comprises WatchDog Timer 123, and for preventing MCU from crashing, its clock source is provided by inner low speed RC;
Register 124, the control signal that buffer memory microcontroller sends out, exports to battery voltage sensing module 11, current detecting and protected location 121, WatchDog Timer 123.
Wherein, lithium battery management system integrated circuit has multiple pin, comprises battery voltage detection pin, microcontroller supply pin, discharge and recharge MOS control pin, battery current detection pin, load condition pin and multiple I/O control pin.
This lithium battery management system integrated circuit can detect 1 ~ 6 joint lithium battery voltage, and can be realized the protecting control application of 3 ~ 6 batteries by the selection of pin, also can detect separately the voltage of multi-series lithium battery entirety.
Lithium battery management system integrated circuit is provided with the pin that direct pulse width modulation controls driven MOS pipe, can be used for the speed regulating control of DC DC series excitation formula motor.
Lithium battery management system integrated circuit can be applied to the back-up source, electric bicycle power supply, electronic toy power supply, power supply of medical equipment etc. that employ lithium battery.
Fig. 2 and Fig. 3 gives two kinds of application circuits of this lithium battery management system integrated circuit, wherein, Figure 2 shows that a kind of application circuit of lithium battery group discharge and recharge difference end, Figure 3 shows that a kind of application circuit of lithium battery group discharge and recharge with end.Two kinds of shown circuit all achieve lithium battery management system integrated circuit and detect the A/D of lithium battery voltage, temperature, electric current and carry out corresponding Control protection according to optimum configurations, have voltage detecting, temperature detection, lithium battery current detecting, PWM control, electric quantity of lithium battery LED deixis.Utilize voltage conversion unit U1, lithium battery power supply provides 4.4V power supply, without the need to external power source to integrated circuit.
To the detection of voltage; this lithium battery management system integrated circuit has 3 ~ 6 series lithium battery voltage detecting defencive functions; by high pressure simulation testing circuit; monitor each single lithium battery voltage; and be stored in register 124; the ADC detection port of low voltage microcontroller module 2 is entered by the ADC branching networks in low voltage logic control module (12) 12; reset signal is regularly transferred to WatchDog Timer 123 by register 124 by low voltage microcontroller module 2, thus realizes lithium battery overvoltage and under-voltage protection function.In addition, by the information of voltage detected by exporting from the corresponding port of integrated circuit after MCU cell processing, the external LED in corresponding port, thus achieve electric quantity display function.Battery voltage sensing module exports battery voltage signal,
To the detection of temperature, this lithium battery management system integrated circuit is monitored thermistor TH by I/O mouth, converts the analog signal monitored to digital signal, and is sent to MCU unit, thus realizes the monitoring to temperature.
To the detection of electric current; this lithium battery management system integrated circuit is by the current signal of corresponding integrated circuit port reading flow through lithium battery; then move to A/D converter, the current digital signal of output is sent to MCU unit, thus realizes short-circuit protection and protection lock function.
The above is better embodiment of the present invention, not does any pro forma restriction to the present invention.It should be noted that; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (7)
1. a lithium battery management system integrated circuit, is characterized in that: comprise
High pressure simulation detection module (1), for detection and the protecting control of lithium battery group voltage, this high pressure simulation detection module comprises: cell voltage detection unit (11), is connected with described lithium battery group, for detecting the voltage of described lithium battery group, be connected to the Single port of described integrated circuit;
Low voltage logic control module (12), is connected with described cell voltage detection unit (11), and carries out control and scheduling co-design according to detected external data to peripheral circuit;
Low voltage microcontroller module (2), is connected with described high pressure simulation detection module (1), for the treatment of from the described data of high pressure simulation detection module (1) and the monitoring to whole system;
Described low voltage logic control module (12) comprises
Current detecting and protected location (121), be connected with described battery voltage sensing module (11), and inside is integrated with big current short-circuit protection, load detecting, charging activation triple functions multiplexing port;
Charge-discharge control unit (122); be connected with protected location (121) with described current detecting; receive the signal that described current detecting and protected location (121) export, and export the control signal of correspondence to integrated circuit Single port, for the break-make of Control peripheral circuit metal-oxide-semiconductor.
2. lithium battery management system integrated circuit according to claim 1, it is characterized in that: described low voltage microcontroller module (2) comprises MCU unit (21), for the detection of cell voltage, electric current and temperature, and carry out corresponding control according to optimum configurations;
A/D converter (22), for converting the external analog signal received to digital signal;
Timer units (23), controls for timing and pulse width modulation.
3. lithium battery management system integrated circuit according to claim 2, is characterized in that: described low voltage logic control module (12) also comprises WatchDog Timer (123), and for preventing MCU from crashing, its clock source is provided by inner low speed RC;
Register (124), the control signal that buffer memory microcontroller sends out, exports to battery voltage sensing module (11), current detecting and protected location (121), WatchDog Timer (123).
4. lithium battery management system integrated circuit according to claim 3, it is characterized in that: described lithium battery management system integrated circuit has multiple pin, comprise battery voltage detection pin, microcontroller supply pin, discharge and recharge MOS control pin, battery current detection pin, load condition pin and multiple I/O control pin.
5. lithium battery management system integrated circuit according to claim 4; it is characterized in that: described lithium battery management system integrated circuit can detect 1 ~ 6 joint lithium battery voltage; and the protecting control application of 3 ~ 6 batteries can be realized by the selection of pin, also can detect separately the voltage of multi-series lithium battery entirety.
6. lithium battery management system integrated circuit according to claim 5, is characterized in that: described lithium battery management system integrated circuit is provided with the pin that direct pulse width modulation controls driven MOS pipe, can be used for the speed regulating control of DC DC series excitation formula motor.
7. lithium battery management system integrated circuit according to claim 6, is characterized in that: described lithium battery management system integrated circuit can be applied to the back-up source, electric bicycle power supply, electronic toy power supply, the power supply of medical equipment that employ lithium battery.
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| CN201310715217.6A CN103762623B (en) | 2013-12-23 | 2013-12-23 | A kind of lithium battery management system integrated circuit |
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| CN201310715217.6A CN103762623B (en) | 2013-12-23 | 2013-12-23 | A kind of lithium battery management system integrated circuit |
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| CN103762623B true CN103762623B (en) | 2016-01-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105322508A (en) * | 2014-06-24 | 2016-02-10 | 上海晴鹏能源科技有限公司 | Charge-discharge protective system of lithium battery pack |
| CN105471035A (en) * | 2015-12-25 | 2016-04-06 | 惠州市德赛电池有限公司 | Vehicular battery with wireless communication intelligent lithium core |
| CN106026222A (en) * | 2016-05-16 | 2016-10-12 | 深圳市乐祺微电子科技有限公司 | Power battery management control integrated circuit |
| CN109787313A (en) * | 2019-01-31 | 2019-05-21 | 欣旺达电子股份有限公司 | Data center's high voltage direct current backup battery based on lithium battery |
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| CN101039037A (en) * | 2007-04-19 | 2007-09-19 | 成都国腾微电子有限公司 | Charging management chip |
| CN101233663A (en) * | 2005-01-19 | 2008-07-30 | 爱特梅尔公司 | Single chip microcontroller including battery management and protection |
| CN101567475A (en) * | 2008-04-22 | 2009-10-28 | 天津泛海科技有限公司 | Lithium battery/battery pack measuring and protecting method based on current subsection detecting technique |
| CN201699442U (en) * | 2010-05-21 | 2011-01-05 | 西安交通大学 | Battery intelligent management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW201135434A (en) * | 2010-04-06 | 2011-10-16 | Hon Hai Prec Ind Co Ltd | System for power source management and portable electronic device using the same |
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| CN101233663A (en) * | 2005-01-19 | 2008-07-30 | 爱特梅尔公司 | Single chip microcontroller including battery management and protection |
| CN101039037A (en) * | 2007-04-19 | 2007-09-19 | 成都国腾微电子有限公司 | Charging management chip |
| CN101567475A (en) * | 2008-04-22 | 2009-10-28 | 天津泛海科技有限公司 | Lithium battery/battery pack measuring and protecting method based on current subsection detecting technique |
| CN201699442U (en) * | 2010-05-21 | 2011-01-05 | 西安交通大学 | Battery intelligent management system |
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