CN203166560U - Battery group safety management system - Google Patents

Battery group safety management system Download PDF

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Publication number
CN203166560U
CN203166560U CN 201320026166 CN201320026166U CN203166560U CN 203166560 U CN203166560 U CN 203166560U CN 201320026166 CN201320026166 CN 201320026166 CN 201320026166 U CN201320026166 U CN 201320026166U CN 203166560 U CN203166560 U CN 203166560U
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China
Prior art keywords
circuit
battery pack
safety management
links
microprocessor
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CN 201320026166
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Chinese (zh)
Inventor
王志勇
郑惠萍
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XIAMEN UNIVERSE POWER TECHNOLOGY Co Ltd
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XIAMEN UNIVERSE POWER TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a battery group safety management system comprising a microprocessor, a hardware protection circuit, a state monitoring circuit, a differential input operational amplification circuit, a temperature sensing circuit, a current detecting circuit, a charging/discharging press button circuit, an operation display panel, a charging drive circuit, and a discharging drive circuit, wherein each of the differential input operational amplification circuit, the temperature sensing circuit, the current detecting circuit, the charging/discharging press button circuit, the operation display panel, the charging drive circuit, and the discharging drive circuit is connected with the microprocessor; the current detecting circuit is arranged between a fuse and a charging switch of a charging return circuit as well as a discharging switch of a discharging return circuit, and therefore the magnitude of currents in the charging return circuit and the discharging return circuit can be detected; the charging drive circuit is connected with the charging switch and therefore switch-on and switch-off operation of the charging switch can be controlled; the discharging circuit is connected with the discharging switch and therefore switch-on and switch-off operation of the discharging switch can be controlled; an output end of the hardware protection circuit is connected with the charging drive circuit and the discharging drive circuit; and the state monitoring circuit detects work of the hardware protection circuit and feeds back monitoring results to the microprocessor. The battery group safety management system is characterized by strong safety protection comprehensiveness and convenience of control.

Description

A kind of battery pack safety management system
Technical field
The utility model relates to the safety management system field, relates to a kind of battery pack safety management system in particular, and it can be widely used in fields such as traffic, communication, energy storage and stand-by power supply.
Background technology
Outstanding along with the global resources shortage problem, electrokinetic cell consists of the present major project in the world, in the power battery pack The Application of Technology, how to guarantee the equal safe operation of each battery in the power battery pack, then becomes the center of gravity that people put forth effort to study.
Traditional lithium ion battery group safety management system generally all is the modes that only adopt hardware circuit, and it still has big security consideration shortcoming space aspect safety management.As the disclosed lithium-ion power battery group management of Chinese utility model patent ZL200720113611.2 system; it comprises several equalizing circuits; several multichannel cell voltage monitoring units and the single machine unit that links to each other by bus with all multichannel cell voltage monitoring chip; multiple batteries is formed series circuit; form battery pack controversial issue and battery pack negative terminal; equalizing circuit in parallel on every batteries; be connected with a plurality of equalizing circuits on the voltage monitoring pin of each multichannel cell voltage monitoring chip; current sense resistor and protective circuit are arranged on the described series circuit; the two ends of current sense resistor link to each other with the current detecting pin of one of them multichannel cell voltage monitoring chip, and the control end of protective circuit links to each other with described single machine unit or the power tube driving pin of one of them multichannel cell voltage monitoring chip links to each other.
As from the foregoing, in above-mentioned patent, its safety management that relates to partly only limits to current sense resistor and protective circuit, so still has the comprehensive shortcoming such as weak of safeguard protection.
In view of this, the inventor has this case to produce at the above-mentioned defective further investigation of existing battery pack safety management system then.
The utility model content
The purpose of this utility model is to provide a kind of battery pack safety management system, has the comprehensive more weak problem of safeguard protection to solve existing batteries management system.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of battery pack safety management system, wherein, comprise microprocessor, hardware protection circuit, status monitor circuit and the differential input operational amplification circuit that all links to each other with microprocessor, temperature sensing circuit, current-sensing circuit, charge/discharge button circuit, operation display panel, charging drive circuit and discharge drive circuit, this current-sensing circuit is arranged between the discharge switch of the charge switch of fuse and charge circuit and discharge loop to detect the size of current in charge circuit and the discharge loop; This charging drive circuit links to each other with charge switch with the switching of control charge switch; this discharge drive circuit links to each other with discharge switch with the switching of control discharge switch; the output of this hardware protection circuit links to each other with charging drive circuit and the drive circuit that discharges, and the work of this status monitor circuit detection hardware protective circuit also feeds back to monitoring result in the microprocessor.
Further, this battery pack safety management system also comprises analog signal ON-OFF control circuit, voltage follower and A/D modular converter, this differential input operational amplification circuit, temperature sensing circuit and current-sensing circuit all link to each other with the analog signal ON-OFF control circuit, and this analog signal ON-OFF control circuit links to each other with microprocessor with the A/D modular converter by voltage follower.
Further; this hardware protection circuit comprises high voltage protection circuit, high temperature protection circuit, hardware overload protecting circuit, switch thermal-shutdown circuit and under-voltage protection circuit; this high voltage protection circuit links to each other with the charging drive circuit; this under-voltage protection circuit links to each other with the discharge drive circuit, and this high temperature protection circuit, hardware overload protecting circuit and switch thermal-shutdown circuit all link to each other with the discharge drive circuit with the charging drive circuit.
Further, this status monitor circuit comprises hardware condition of high temperature supervisory circuit, hardware overload supervisory circuit, hardware low-pressure state supervisory circuit and the hardware high pressure conditions supervisory circuit that all links to each other with microprocessor.
Further, this battery pack safety management system also comprises the radiator fan circuit, and this radiator fan circuit links to each other with microprocessor; This status monitor circuit also comprises the fan-status supervisory circuit, and this fan-status supervisory circuit input links to each other with the radiator fan circuit, and output links to each other with microprocessor.
Further, this battery pack safety management system also comprises the emergency starting button circuit, and this emergency starting button circuit links to each other with microprocessor.
Further, this battery pack safety management system also comprises buzzer circuit, and this buzzer circuit links to each other with microprocessor.
Further, this battery pack safety management system also comprises a plurality of equalizing circuits that correspond respectively to a battery in the battery pack, these a plurality of equalizing circuits all link to each other with microprocessor, this status monitor circuit also comprises the equilibrium state supervisory circuit, the input of this equilibrium state monitoring loop links to each other with a plurality of equalizing circuits, and output links to each other with microprocessor.
Further, this battery pack safety management system also comprises battery connector, and this differential input operational amplification circuit links to each other with battery connector, and this battery connector also connects the power module that promising whole battery group safety management system provides power supply.
Further, this battery pack safety management system also comprises the Show Button circuit, and this Show Button circuit links to each other with microprocessor.
After adopting said structure, a kind of battery pack safety management system that the utility model relates to, it is on the one hand by differential input operational amplification circuit, temperature sensing circuit and current-sensing circuit, so can read, judge and protect output to the gentle discharging current of voltage, battery case of every battery, and realize the first order protection management to the battery pack Secure Application; By allowing hardware protection circuit link to each other with the discharge drive circuit with the charging drive circuit, so can realize second level protection management on the other hand; Another aspect can also in time detect the state of hardware protection circuit and feed back to microprocessor to realize third level protection management by the monitoring of status monitor circuit to hardware protection circuit.
So, compared with prior art, the utility model puts in place to the safeguard protection of battery pack more comprehensively, and the information of microprocessor processes all externally shows by operation display panel simultaneously, so also have management and control characteristics easily.
Description of drawings
The structural representation of Fig. 1 a kind of battery pack safety management system for the utility model relates to;
Fig. 2 is the annexation figure between microprocessor in the utility model relates to a kind of battery pack safety management system and equalizing circuit, buzzer circuit, radiator fan circuit etc.;
Fig. 3 is the schematic diagram of hardware protection circuit in the utility model relates to a kind of battery pack safety management system and status monitor circuit concrete structure.
Among the figure:
Battery pack safety management systems -100 microprocessor -1 -11 analog signal switching control circuit voltage follower-12A / D converter module circuit -14 -13 emergency start button Display button battery connector circuit -15 -16 Power Module - 17 hardware protection circuit -2 high-voltage protection circuit protection circuit temperature -21 -22 -23 switch hardware protection circuit overtemperature protection circuit low voltage protection circuit -24 -25 -3 hardware status monitoring circuit temperature -31 hardware status monitoring circuit overload hardware status monitoring circuit voltage -32 -33 hardware status monitoring circuit status monitoring circuit high voltage differential input operational amplifier circuit -34 -41 -42 temperature sensing circuit current detection circuit -43 charge / discharge operation display panel button circuit -44 - 45 charge-discharge drive circuit drive circuit -46 -47 -5 charging circuit solar charger solar charge positive negative -52 -51 -53 charging switch battery cathode discharge circuit -6 -61 -62 fuse battery anode cathode -64 -63 load load cathode discharge switch -66 -65 -7 fan cooling fan circuit state equalization circuit monitoring circuit -71 -8 -81 equilibrium state monitoring circuit buzzer circuit -9.
Embodiment
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
As shown in Figure 1; a kind of battery pack safety management system 100 that the utility model relates to comprises microprocessor 1, hardware protection circuit 2, status monitor circuit 3 and the differential output operational amplification circuit 41 that all links to each other with microprocessor 1, temperature sensing circuit 42, current-sensing circuit 43, charge/discharge button circuit 44, operation display panel 45, charging drive circuit 46 and discharge drive circuit 47.
As shown in Figure 1, this current-sensing circuit 43 is arranged between the discharge switch of the charge switch of fuse and charge circuit 5 and discharge loop 6, thereby plays the effect of size of current in detecting charge circuit 5 and the discharge loop 6.
This charging drive circuit 46 links to each other with charge switch with the switching of control charge switch; this discharge drive circuit 47 links to each other with discharge switch with the switching of control discharge switch; the output of this hardware protection circuit 2 links to each other with charging drive circuit 46 and the drive circuit 47 that discharges, and the work of these status monitor circuit 3 detection hardware protective circuits 2 also feeds back to monitoring result in the microprocessor 1.
As shown in Figure 3; as a kind of concrete structure of this hardware protection circuit 2 with status monitor circuit 3; this hardware protection circuit 2 comprises high voltage protection circuit 21, high temperature protection circuit 22, hardware overload protecting circuit 23, switch thermal-shutdown circuit 24 and under-voltage protection circuit 25; this high voltage protection circuit 21 links to each other with charging drive circuit 46; this under-voltage protection circuit 25 links to each other with discharge drive circuit 47, and this high temperature protection circuit 22, hardware overload protecting circuit 23 and switch thermal-shutdown circuit 24 all link to each other with discharge drive circuit 47 with charging drive circuit 46.
3 of this status monitor circuits comprise hardware condition of high temperature supervisory circuit 31, hardware overload supervisory circuit 32, hardware low-pressure state supervisory circuit 33 and the hardware high pressure conditions supervisory circuit 34 that all links to each other with microprocessor 1.
So, a kind of battery pack safety management system 100 that the utility model relates to, it is on the one hand by differential output operational amplification circuit 41, temperature sensing circuit 42 and current-sensing circuit 43, so can read, judge and protect output to the gentle discharging current of voltage, battery case of every battery, and realize the first order protection management to the battery pack Secure Application; By allowing hardware protection circuit 2 link to each other with discharge drive circuit 47 with charging drive circuit 46, so can realize second level protection management on the other hand; Another aspect can also in time detect the state of hardware protection circuit 2 and feed back to microprocessor 1 to realize third level protection management by the monitoring of 3 pairs of hardware protection circuits 2 of status monitor circuit.
This charge circuit 5 is from solar recharging anodal 51, be connected to battery anode 61 by distribution, make charging current flow into from battery anode 61 by the connection of the distribution between battery pack inside and the battery, the battery pack negative pole flows out, through fuse 63 and current-sensing circuit 43, arrive charge switch 53, when microprocessor 1 inquires charge/discharge button circuit 44 input charge enable signals, the output useful signal opens charge switch 53 for charging drive circuit 46, thereby make charging current flow to solar recharging negative pole 52, get back to solar recharging positive pole 51 finally by charger inside.
This discharge loop 6 is from battery anode 61, be connected to load positive pole 64 by distribution, discharging current flows out from load negative pole 65, through fuse 63 and current-sensing circuit 43, arrive discharge switch 66, when microprocessor 1 inquired charge/discharge button circuit 44 input discharge enabling signals, the output useful signal opened discharge switch 66 for discharge drive circuit 47, thereby make discharging current flow to battery pack negative pole 62, get back to battery anode 61 finally by battery pack inside;
As shown in Figure 1, in order to allow this microprocessor 1 timesharing receive the signal of each temperature sensing circuit 42 grades and to carry out analog-to-digital conversion respectively, this battery pack safety management system 100 also comprises analog signal ON-OFF control circuit 11, voltage follower 12 and A/D modular converter 13, this differential input operational amplification circuit 41, temperature sensing circuit 42 and current-sensing circuit 43 all link to each other with analog signal ON-OFF control circuit 11, and this analog signal ON-OFF control circuit 11 links to each other with microprocessor 1 with A/D modular converter 13 by voltage follower 12.Namely also be disposed with analog signal ON-OFF control circuit 11, voltage follower 12 and A/D modular converter 13 between this differential output operational amplification circuit 41, temperature sensing circuit 42 and current-sensing circuit 43 and the microprocessor 1.So, utilize this analog signal ON-OFF control circuit 11 can realize the timesharing input, to carry out analog-to-digital conversion process, above-mentioned information then can be used as the signal source that shows voltage, electric current and temperature in the operation display panel 45.
As shown in Figure 2, this battery pack safety management system 100 also comprises radiator fan circuit 7, and this radiator fan circuit 7 links to each other with microprocessor 1; This status monitor circuit 3 also comprises fan-status supervisory circuit 71, and these fan-status supervisory circuit 71 inputs link to each other with radiator fan circuit 7, and output links to each other with microprocessor 1.So, radiator fan can be according to the situation of electric current and battery case temperature, and realizes intelligent starting and close.
As shown in Figure 2, this battery pack safety management system also comprises a plurality of equalizing circuits 8 that correspond respectively to a battery in the battery pack, these a plurality of equalizing circuits 8 all link to each other with microprocessor 1, this status monitor circuit 3 also comprises equilibrium state supervisory circuit 81, the input of this equilibrium state monitoring loop links to each other with a plurality of equalizing circuits 8, and output links to each other with microprocessor 1.So, can guarantee the balance of each monomer battery voltage in the battery pack, thereby avoid back out of balance discharging current to cause impact in various degree to injure for each cell, cause the life-span of whole battery group seriously to shorten; By the control of microprocessor 1, can further improve the horizontal accuracy of cell voltage equilibrium simultaneously, finally realize the management that increases the service life on the Secure Application, also therefore respond the energy-saving consumption-reducing policy.
Please again referring to shown in Figure 1, this battery pack safety management system 100 also comprises emergency starting button circuit 14, the Show Button circuit 15 and battery connector 16, and this emergency starting button circuit 14 all links to each other with microprocessor 1 with the Show Button circuit 15.This differential output operational amplification circuit 41 links to each other with battery connector 16, and this battery connector 16 also connects the power module 17 that promising whole battery group safety management system provides power supply.
As shown in Figure 2, this battery pack safety management system also comprises buzzer circuit 9, and this buzzer circuit 9 links to each other with microprocessor 1, so can carry out warning reminding by sound.
Compared with prior art, the utility model puts in place to the safeguard protection of battery pack more comprehensively, and the information of microprocessor 1 processing simultaneously all externally shows by operation display panel 45, so also have management and control characteristics easily.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.

Claims (10)

1. battery pack safety management system, it is characterized in that, comprise microprocessor, hardware protection circuit, status monitor circuit and the differential input operational amplification circuit that all links to each other with microprocessor, temperature sensing circuit, current-sensing circuit, charge/discharge button circuit, operation display panel, charging drive circuit and discharge drive circuit, this current-sensing circuit is arranged between the discharge switch of the charge switch of fuse and charge circuit and discharge loop to detect the size of current in charge circuit and the discharge loop; This charging drive circuit links to each other with charge switch with the switching of control charge switch; this discharge drive circuit links to each other with discharge switch with the switching of control discharge switch; the output of this hardware protection circuit links to each other with charging drive circuit and the drive circuit that discharges, and the work of this status monitor circuit detection hardware protective circuit also feeds back to monitoring result in the microprocessor.
2. a kind of battery pack safety management system as claimed in claim 1, it is characterized in that, this battery pack safety management system also comprises analog signal ON-OFF control circuit, voltage follower and A/D modular converter, this differential input operational amplification circuit, temperature sensing circuit and current-sensing circuit all link to each other with the analog signal ON-OFF control circuit, and this analog signal ON-OFF control circuit links to each other with microprocessor with the A/D modular converter by voltage follower.
3. a kind of battery pack safety management system as claimed in claim 1; it is characterized in that; this hardware protection circuit comprises high voltage protection circuit, high temperature protection circuit, hardware overload protecting circuit, switch thermal-shutdown circuit and under-voltage protection circuit; this high voltage protection circuit links to each other with the charging drive circuit; this under-voltage protection circuit links to each other with the discharge drive circuit, and this high temperature protection circuit, hardware overload protecting circuit and switch thermal-shutdown circuit all link to each other with the discharge drive circuit with the charging drive circuit.
4. a kind of battery pack safety management system as claimed in claim 1, it is characterized in that this status monitor circuit comprises hardware condition of high temperature supervisory circuit, hardware overload supervisory circuit, hardware low-pressure state supervisory circuit and the hardware high pressure conditions supervisory circuit that all links to each other with microprocessor.
5. a kind of battery pack safety management system as claimed in claim 1 is characterized in that, this battery pack safety management system also comprises the radiator fan circuit, and this radiator fan circuit links to each other with microprocessor; This status monitor circuit also comprises the fan-status supervisory circuit, and this fan-status supervisory circuit input links to each other with the radiator fan circuit, and output links to each other with microprocessor.
6. a kind of battery pack safety management system as claimed in claim 1 is characterized in that, this battery pack safety management system also comprises the emergency starting button circuit, and this emergency starting button circuit links to each other with microprocessor.
7. a kind of battery pack safety management system as claimed in claim 1 is characterized in that, this battery pack safety management system also comprises buzzer circuit, and this buzzer circuit links to each other with microprocessor.
8. a kind of battery pack safety management system as claimed in claim 1, it is characterized in that, this battery pack safety management system also comprises a plurality of equalizing circuits that correspond respectively to a battery in the battery pack, these a plurality of equalizing circuits all link to each other with microprocessor, this status monitor circuit also comprises the equilibrium state supervisory circuit, the input of this equilibrium state monitoring loop links to each other with a plurality of equalizing circuits, and output links to each other with microprocessor.
9. a kind of battery pack safety management system as claimed in claim 1, it is characterized in that, this battery pack safety management system also comprises battery connector, this differential input operational amplification circuit links to each other with battery connector, and this battery connector also connects the power module that promising whole battery group safety management system provides power supply.
10. a kind of battery pack safety management system as claimed in claim 1 is characterized in that, this battery pack safety management system also comprises the Show Button circuit, and this Show Button circuit links to each other with microprocessor.
CN 201320026166 2013-01-18 2013-01-18 Battery group safety management system Active CN203166560U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104052130A (en) * 2014-07-04 2014-09-17 山东大学 Iron phosphate lithium battery power supply management system used for service robots and working method
CN107104481A (en) * 2017-04-28 2017-08-29 深圳巴斯巴科技发展有限公司 A kind of off-board charger air cooling way intelligent heat dissipation system of automobile
CN108594125A (en) * 2018-04-11 2018-09-28 芜湖职业技术学院 Lithium battery identification of Model Parameters device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104052130A (en) * 2014-07-04 2014-09-17 山东大学 Iron phosphate lithium battery power supply management system used for service robots and working method
CN107104481A (en) * 2017-04-28 2017-08-29 深圳巴斯巴科技发展有限公司 A kind of off-board charger air cooling way intelligent heat dissipation system of automobile
CN108594125A (en) * 2018-04-11 2018-09-28 芜湖职业技术学院 Lithium battery identification of Model Parameters device

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