CN100495805C - Method for forming battery running system of electric vehicle and system - Google Patents
Method for forming battery running system of electric vehicle and system Download PDFInfo
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- CN100495805C CN100495805C CNB200510050287XA CN200510050287A CN100495805C CN 100495805 C CN100495805 C CN 100495805C CN B200510050287X A CNB200510050287X A CN B200510050287XA CN 200510050287 A CN200510050287 A CN 200510050287A CN 100495805 C CN100495805 C CN 100495805C
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Abstract
The invention is used to implement the management for separating and combining the function of electric automobile at different states by building a battery management system comprising a monitoring module and a charging equalization module. When the electric automobile is in normal running state, said system is working at a monitor mode that monitors each battery in the battery pack, and the charging plug socket in the charging equalization module box is in cutting-off state. When the electric automobile stops to make charge, said system is working at the charging equalization mode that adds the charging equalization box on the monitoring module to automatically make equalization charging for the battery pack. The charging equalization module box hasn't to be installed on one electric automobile, but can be used by multi electric automobiles.
Description
Technical field
The present invention relates to electric automobile management system technical field, especially relate to a kind of cell management system of electric automobile constructive method and system thereof.
Background technology
Electric automobile has become the developing direction of following automobile, and as drive energy, it has characteristics such as pollution is little, and noise is little, and is energy-conservation with the high power battery group for it.At present all dispose high-power drive pond group on some power large-scale electric generating stations, important communication apparatus, the electric automobile, these power battery pack particularly lithium-ion-power cell group all adopt the series connection of low pressure cell to use the output of acquisition high pressure, are the main motor power supply of electric automobile.The performance and the quality of every cell of this series-fed mode are directly connected to electric powered motor performance, q﹠r.The life-span of the cell of electric automobile is longer than the life-span of battery pack, because SOC (state-of-charge value) is in each cell of imbalance in the battery pack, that is constantly repeated overcharges and overdischarge and aggravate the unbalanced of its SOC, causes its lost of life.For the batteries of electric automobile group being increased the service life and guaranteeing safety in utilization, the setting battery management system is monitored with balanced cell or cell group usually.Mainly be by to every cell configuration monitoring and charge balancing module, parameters such as the voltage of monitoring cell, temperature, and, every battery parameter is uploaded to host computer in real time by wire communication, manage concentratedly and processing by host computer.Host computer sends equalizing signal to the lower cell balance module of voltage, carries out online additional electric weight to low-voltage battery, realizes the electric voltage equalization of each cell in the battery pack, simultaneously the battery of excess temperature, overvoltage is reported to the police.
The general employing of the monitoring of every cell and balance module power taking on this piece cell in the battery management system of prior art, pass through voltage transformation, give the power supply of balance module control chip, therefore no matter electric automobile is in operation or garage parking, and all balance modules of power battery pack are in work and power consumption state always.In addition there is following major defect in such battery management system to electric automobile much smaller than down time running time: (1) balance module is being wasted battery power in greater than 50% time; (2) electric automobile can not cut off the power supply under dead ship condition fully, has significantly reduced the fail safe of vehicle.
The cell balance module adopts battery monitoring circuit and design of charge balancing circuit integrating and modularization encapsulation in the cell management system of electric automobile of prior art, produce more potential safety hazard thus: (1) charge balancing circuit is built in each balance module inside, because radiating condition is bad, the inside modules temperature is too high, battery monitoring circuit and the design of charge balancing circuit integrating and modularization encapsulation cause balance module to damage easily, cause the accident of battery pack balancing decreased performance or inefficacy to take place; (2) vehicle long-play, particularly road conditions difference jolt when big, because the high-tension line of charge balancing circuit adopts more plug, cause a few hectovolt high-voltage line epidermises wearing and tearing because of inside modules to cause short circuit easily, even serious security incident such as catch fire.
Summary of the invention
Purpose of the present invention mainly is to solve the existing in prior technology battery management system to consume energy bigger, energy waste is serious, the balance module of one encapsulation damages easily, reduced the problem of the fail safe aspect of electric automobile, a kind of cell management system of electric automobile constructive method is proposed, by independently monitoring function module and the charge balancing module of setting up battery management system, electric automobile is realized that function under the different situations is rationally separated and the processing of organic cooperation, when the electric automobile normal driving, each cell in the battery pack is monitored and reported to the police, when stopping for charging, on monitoring module, carry additionally the charge balancing module, battery pack automatic equalization is charged.Also can be used for adopting the power large-scale electric generating station of power battery pack and important communication apparatus.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of cell management system of electric automobile constructive method and system thereof, its management system constructive method is by the independently monitoring function module of setting up battery management system and charge balancing module, electric automobile is realized that function under the different situations is rationally separated and the processing of organic cooperation, when the electric automobile normal driving, each cell in the battery pack is monitored and reported to the police, when stopping for charging, on monitoring module, carry additionally the charge balancing module, to the charging of battery pack automatic equalization, method may further comprise the steps:
(1) the monitoring function module and the charge balancing functional module of two standalone features of battery management system configuration;
(2) the communication stube cable of monitoring function module adopts split conductor, wherein four heart yearns comprise two holding wires and two power lines, during battery management system work, the power supply of monitoring function module is by the power taking from the power line of communication cable of DC/DC insulating power supply, low-tension supply on the low-tension supply of communicating circuit and the monitoring function module is isolated, and guarantees monitoring function module and host computer reliable communicating;
When (3) battery management system need be cut off the electricity supply or close, directly cut off the power supply that power supply on the host computer just can cut off the entire cell management system, improve the fail safe of system, save invalid power supply power consumption under the dead ship condition;
(4) the monitoring function module has the battery coding circuit, and host computer is by communication stube cable access monitoring functional module, directly obtains the data of the numbering of each cell and voltage thereof, electric current, temperature;
(5) when stopping for charging, on monitoring module, carry additionally the charge balancing module, battery management system starts the automatic charge equalization function, realizes the charging automatic equalization of battery pack, keeps interior each cell of battery pack that the harmony of electric weight is provided.
A kind of cell management system of electric automobile comprises monitoring module group 202, battery pack 203 and charge balancing module cage 204, and is subjected to host computer 201 management and control, is:
N charge balancing module arranged in the charge balancing module cage 204, and (n=1～N), each charge balancing module 23n, the monitoring module 21n corresponding with cell 22n of battery pack can set up plug-in type by multicore communication cable 24n and connect;
Be in the vehicle of transport condition, can not carry charge balancing module cage 204, if carry charge balancing module cage 204, then each monitoring module 211～21N and corresponding charge balancing module 231～23N disconnection plug-in type connection, the charge balancing module is in off-position and consumed power not.
When vehicle parking is in charged state, the plug of the multicore communication cable 241～24N of each charge balancing module 231～23N in the charge balancing module cage 204 inserts the multi-core socket of relative detecting module 211～21N, the charge balancing module is in and powers up operating state, and the commands for controlling of pressing host computer 201 is to the administration equalizing charge of battery.
Described a kind of cell management system of electric automobile, monitoring module 21n comprises voltage acquisition 301, current acquisition 302, temperature sensor 303, filter circuit 304, warning circuit 306, microprocessor 307, communicating circuit 310, power supply 311, is: also comprise charge balancing multi-core socket 305, battery coding circuit 308, buffer circuit 309 and communicating circuit multi-core socket 312; Microprocessor 307 is selected the single-chip microcomputer that has a plurality of A/D converters, serial line interface, parallel interface and RAM for use; Power supply 311 is DC/DC insulating power supplies;
The output of voltage collection circuit 301, current acquisition circuit 302 and temperature sensor 303 is connected on the input of filter circuit 304 respectively, and the output of filter circuit 304 is connected with 3 A/D conversion input ports of microprocessor 307; A plurality of input/output interfaces of microprocessor 307 are connected with the input of buffer circuit 309, the output of battery coding circuit 308 and the holding wire end points of charge balancing multi-core socket 305 with warning circuit 306 respectively; The battery line end points of charge balancing multi-core socket 305 and the input of voltage collection circuit 301 are by cable and n
#The electrode of battery 22n connects; The output of buffer circuit 309 is connected with communicating circuit 310; Communicating circuit multi-core socket 312 is connected with communication interface with the power supply of host computer 101 by communication cable 25n; The power line end points of communicating circuit multi-core socket 312 connects the input of DC/DC insulating power supply 311 and the input of communicating circuit 310 power supplys; The output of DC/DC insulating power supply 311 is the circuit supply of monitoring module 21n.
Described a kind of cell management system of electric automobile, each charge balancing module 23n of charge balancing module cage 204 has charging circuit 401 and high voltage source 406, it is characterized in that: also comprise current-limiting control circuit 402, charging circuit multi-core socket 403 and multicore communication cable 24n; The two ends of multicore communication cable 24n have charging circuit multi-pin connector 404 and charge balancing multi-pin connector 405;
Current-limiting control circuit 402 is attempted by the output of charging circuit 401, the charging current and the voltage of 401 outputs of control charging circuit; The output of charging circuit 401 is connected on the charging heart yearn end of charging circuit multi-core socket 403, the power end of charging circuit 401 is connected on the output of high voltage source 406, grafting charging circuit multi-pin connector 404 on the charging circuit multi-core socket 403, the charge balancing multi-pin connector 405 of the multicore communication cable 24n other end, when the needs equalizing charge, it is inserted the charge balancing multi-core socket of relative detecting module;
Charging circuit 401 controlled DC/DC charge power modules of employing or metal-oxide-semiconductor, IGBT constant power device, a control end is connected the microprocessor 307 of monitoring module with plugs and sockets through multicore communication cable 24n, microprocessor control charging circuit 401 is in charging or static condition, and another Current limited Control end connects the control end of current-limiting control circuit 402.
Described a kind of cell management system of electric automobile, be: communication stube cable 241～24N adopts multicore cable, comprise two holding wires and two power lines of adopting many heart yearns and connecing, the DC/DC insulating power supply 412 of monitoring module 21n and equalizing charge module 23n power taking from the power line of communication cable 24n, voltage is V
2Communicating circuit can be used independently accessory power supply power supply, and voltage is V
1, or directly power taking from the power line of communication cable 24n, voltage is V
0
Described a kind of cell management system of electric automobile, be: monitoring module 21n has battery coding circuit 308, it provides coded data for cell, and the output of battery coding circuit 308 connects the coded data acquisition port of monitoring module 21n microprocessor 307.
Described a kind of cell management system of electric automobile, be: current-limiting control circuit 402 is by current sampling circuit 601, predetermined current value comparator 602 and control circuit 603 are formed, current sampling circuit 601 inputs are connected on the current sampling loop of charging circuit 401, current sampling circuit 601 outputs are connected to the comparison current input terminal of predetermined current value comparison circuit 602, current value comparison circuit 602 outputs are connected with the control input end of control circuit 603, the output of control circuit 603 is connected on the output current limiting control end of controlled DC/DC charge power module, according to sample rate current I
SWith preestablish charge balancing value In
0Comparative result, work as I
S≧ In
0The time, the control charging circuit enters the current-limiting charge state.
Substantial effect of the present invention:
When (1) vehicle of use cell management system of electric automobile of the present invention is in transport condition, each charge balancing module in the charge balancing module cage disconnects plug-in type with corresponding monitoring module and connects, the charge balancing module is in off-position and consumed power not, saving is to the invalid static power consumption of vehicle power, and per car needs tens to more or less a hundred equalizing charge module under the prior art, the about 2W of each equalizing charge module quiescent dissipation, very considerable to the effect of saving battery power and reduce cost.
(2) electric automobile by the host computer shutdown, cuts off the power supply cell management system of electric automobile under dead ship condition fully, has both met safety regulations, can save battery power again.
(3) the charge balancing circuit separates fully with the monitoring module circuit, solve design of battery monitoring circuit and charge balancing circuit integrating and modularization encapsulation effectively and caused the balance module damage easily, cause the accident of battery pack balancing decreased performance or inefficacy to take place, significantly improve the fail safe of vehicle.
(4) vehicle of cell management system of electric automobile of the present invention in motion, the plug of charge balancing module cage is in non-access state or does not carry with car, can avoid vehicle because of a large amount of charging plug-in unit long-plays, cause that easily a few hectovolt high-voltage lines of charge balancing circuit break the skin short circuit, even serious security incident such as catch fire.
(5) the charge balancing module cage can not carry with car, helps adopting the public mode of many cars to dispose, thereby effectively reduces the operating cost of electric automobile.
The present invention proposes a kind of cell management system of electric automobile constructive method,, electric automobile is realized that function under the different situations is rationally separated and the processing of organic cooperation by independently monitoring function module and the charge balancing module of setting up battery management system.The monitoring function module and the charge balancing functional module of two standalone features of battery management system configuration, when the electric automobile normal driving, system runs on monitoring mode, each cell in the battery pack is monitored and reported to the police, when the parking charging electric vehicle, system runs on the charge balancing pattern, carrys additionally the charge balancing module on monitoring module, and battery pack automatic equalization is charged.The charge balancing module cage disconnects at driving states charging plug seat, can significantly save energy and improve vehicle safety, also can help adopting the public mode of many cars not with the car configuration, effectively reduces the operating cost of electric automobile.
Description of drawings
Fig. 1 is that the prior art battery management system constitutes schematic diagram;
Fig. 2 is a cell management system of electric automobile principle of compositionality block diagram of the present invention;
Fig. 3 is the monitoring module electricity theory diagram of cell management system of electric automobile of the present invention;
Fig. 4 is the charge balancing module electricity theory diagram of cell management system of electric automobile of the present invention;
Fig. 5 is cell management system of electric automobile embodiment n of the present invention
#Monitoring module electricity theory diagram;
Fig. 6 is the n of cell management system of electric automobile embodiment of the present invention
#Charge balancing module electricity theory diagram.
Specific implementation method
Describe the course of work of cell management system of electric automobile embodiment of the present invention in detail below in conjunction with accompanying drawing 3～Fig. 6.
Fig. 3 provides the electric theory diagram of cell management system of electric automobile monitoring module embodiment of the present invention.Monitoring module 21n comprises voltage collection circuit 301, current acquisition circuit 302, temperature sensor 303, filter circuit 304, charge balancing multi-core socket 305, warning circuit 306, microprocessor 307, battery coding circuit 308, buffer circuit 309, communicating circuit 310, power supply 311 and communicating circuit multi-core socket 312; Microprocessor 307 is selected the single-chip microcomputer that has a plurality of A/D translation circuits, serial line interface, parallel interface and RAM for use; Power supply 311 is DC/DC insulating power supplies;
The output of voltage collection circuit 301, current acquisition circuit 302 and temperature sensor 303 is connected on the input of filter circuit 304 respectively, and the output of filter circuit 304 is connected with 3 A/D conversion input ports of microprocessor 307; A plurality of input interfaces of microprocessor 307 are connected with the input of warning circuit 306 and buffer circuit 309, the output of battery coding circuit 308 and the holding wire end points of charge balancing multi-core socket 305 respectively with output interface; The battery line end points of charge balancing multi-core socket 305 and the input of voltage collection circuit 301 are by cable and n
#The electrode of battery 22n connects; The output of buffer circuit 309 is connected with communicating circuit 310; Communicating circuit multi-core socket 312 is connected with communication interface with the power supply of host computer 101 by communication cable 25n; The power line end points V of communicating circuit multi-core socket 312
0Connect the input of DC/DC insulating power supply 311 and the power input V of communicating circuit 310
1The output V of DC/DC insulating power supply 311
2Circuit supply for monitoring module 21n.
Cell management system of electric automobile embodiment n of the present invention
#Monitoring module electricity theory diagram as shown in Figure 5.The voltage collection circuit 301 of monitoring module 21n is a monomer battery voltage electric resistance partial pressure mode, current acquisition circuit 302 is selected CS040EK1 type Hall current sensor for use, temperature sensor 303 adopts the LM35 type, filter circuit 304 is 3 road LC filter circuits, warning circuit 306 is taked the sound and light prompt, microprocessor 307 is the PIC16F872 single-chip microcomputer, battery coding circuit 308 is for adopting the address encoding circuit of 8 toggle switchs, buffer circuit 309 is PC817 optocoupler and accessory circuit thereof, communicating circuit 310 is a bus repeaters, DC/DC insulating power supply 311 adopts WDY05S05-2W insulating power supply module, charge balancing multi-core socket 305 and communicating circuit multi-core socket 312 adopt rectangular connector, the multicore of 16 core charge balancing sockets also is connected into two power ends and two control ends, two power ends connect n# battery electrode and voltage collection circuit 301 inputs, two control ends connect the control end of microprocessor 307, the multicore of 16 core communicating circuit sockets 312 also is connected into two power ends and two communication terminals, and two power ends connect the power supply V of host computer 101
0The input power supply V of end, DC/DC insulating power supply 311
0The power supply V of end and communicating circuit 310
0End, the socket of rectangular connector has over cap, can prevent when separating with plug dabbling and preventing dust.
Fig. 4 provides the electric theory diagram of the charge balancing module embodiment of cell management system of electric automobile of the present invention.Each charge balancing module 23n in the charge balancing module cage 204 comprises charging circuit 401 and high voltage source 406, current-limiting control circuit 402, charging circuit multi-core socket 403 and multicore communication cable 24n; The two ends of multicore communication cable 24n have 16 core rectangular inserts, are respectively charging circuit multi-pin connector 404 and charge balancing multi-pin connector 405.Charging circuit 401 controlled DC/DC of employing or AC/DC charge power module or metal-oxide-semiconductor, IGBT power device; High voltage source 406 can be high-voltage DC power supply or 220V AC power.
Current-limiting control circuit 402 is attempted by the output of controlled charging circuit 401, the charging current and the voltage of 401 outputs of control charging circuit, the output V of charging circuit 401
4Be connected on the charging heart yearn end of charging circuit multi-core socket 403, the power input of charging circuit 401 is connected on the output of high voltage source 406, the charging circuit multi-pin connector 404 of grafting multicore communication cable 24n on the charging circuit multi-core socket 403, the charge balancing multi-pin connector 405 of the multicore communication cable 24n other end; Controlled charging circuit 401 can controlledly be in charged state or static condition.When the needs equalizing charge, the charging circuit multi-pin connector 404 of multicore communication cable 24n one end is inserted charging circuit multi-core socket 403, other end charge balancing multi-pin connector 405 inserts the charge balancing multi-core socket 305 of relative detecting module, the pilot signal of the microprocessor 307 of monitoring module is through charge balancing multi-core socket 305, multicore communication cable 24n and charging circuit multi-core socket 403, make the charging circuit 401 controlled charged states that are in, when the multi-pin connector 404 and 405 of multicore communication cable 24n was extracted, controlled charging circuit 401 was in static condition.
Fig. 6 is the n of cell management system of electric automobile embodiment of the present invention
#Charge balancing module electricity theory diagram.Charging circuit 401 adopts the controlled DC/DC charge power of VICOR VI-260-EV module, and high voltage source 406 adopts 300～350V high-voltage DC power supply; Current-limiting control circuit 402 is by adopting CS040EK1 type Hall current sensor, the predeterminable current value comparator 602 of LM385 type and control circuit 603 to form, current acquisition circuit 601 inputs are connected on the current sampling loop of controlled charging circuit 401, the output of current sampling circuit 601 is connected to the comparison current input terminal of predetermined current value comparison circuit 602, current value comparison circuit 602 outputs are connected with the control input end of control circuit 603, and the output of control circuit 603 is connected on the output current limiting control end of controlled DC/DC charge power module 401.
The charge balancing pattern working condition of electric automobile is as follows: the charge balancing multi-core socket 305 that charging circuit multi-pin connector 404 and the charge balancing multi-pin connector 405 of multicore communication cable 24n inserted charging circuit multi-core socket 403 and relative detecting module 21n respectively, host computer 201 starts, system works is in the charge balancing pattern.Controlled charging circuit 401 obtains high direct voltage power supply V from external high voltage power supply 406
3, through controlled DC/DC charge power module 401 conversions, the output charging voltage is V
4, V
4Be controlled at 2.5～4.2V, the charge balancing Current Control is at 5～10A; The monitoring charging signals that the microprocessor 307 of monitoring module 21n sends according to host computer 201, through the charge balancing multi-core socket 305 of monitoring module 21n, charge balancing multi-pin connector 405 and charging circuit multi-pin connector 404 and the charging circuit multi-core socket 403 of multicore communication cable 24n, be added to the charging control end of controlled charging circuit 401, the operating state of the controlled charging circuit 401 of control equalizing charge module 23n: controlled charging module operating state or static condition.
The battery coding circuit of the embodiment of the invention is encoded to 84 cells for adopting the address encoding circuit of 8 toggle switchs.Every coded address line directly links to each other with 8 I/O ports of the single-chip microcomputer of monitoring module, and single-chip microcomputer directly reads the level state of this I/O port, just can obtain the numbering of current monomer.The microprocessor 307 of monitoring module 21n directly obtains cell coded message and voltage, electric current, temperature and the charge parameter information of each coding cell 22n in the host computer, control charge balancing module 23n carries out charge balancing to cell 22n by charge parameter, keeps the harmony of each cell charging in the battery pack.
Be in the balanced operation process in the charge balancing module, current-limiting control circuit 402 control equalizing charge current values, current acquisition circuit 601 collects charging current I from the current sample end of controlled DC/DC charge power module 401
S, sample rate current I
SDeliver to predeterminable current value comparator 602, and preestablish charge balancing value In
0Comparative result, work as I
S≧ In
0The time, with control circuit 603 sets, the output electronegative potential, the control charging circuit enters the current-limiting charge state, and equalizing charge module 23n is kept with stable charging current equilibrium value In
0Battery 22n is carried out equalizing charge, thereby, the battery charging and discharging life time improved.
Claims (10)
1. cell management system of electric automobile constructive method, its management system constructive method is by the independently monitoring function module of setting up battery management system and charge balancing module, electric automobile is realized that function under the different situations is rationally separated and the processing of organic cooperation, when the electric automobile normal driving, each cell in the battery pack is monitored and reported to the police, when stopping for charging, on monitoring module, carry additionally the charge balancing module, to the charging of battery pack automatic equalization, method may further comprise the steps:
(1) two standalone feature modules of battery management system configuration: monitoring function module and charge balancing functional module;
(2) the communication stube cable of monitoring function module adopts split conductor, wherein four heart yearns comprise two holding wires and two power lines, during battery management system work, the power supply of monitoring function module is by the power taking from the power line of communication cable of DC/DC insulating power supply, low-tension supply on the low-tension supply of communicating circuit and the monitoring function module is isolated, and guarantees monitoring function module and host computer reliable communicating;
When (3) battery management system need be cut off the electricity supply or close, directly cut off the power supply that power supply on the host computer just can cut off the entire cell management system, improve the fail safe of system, save invalid power supply power consumption under the dead ship condition;
(4) the monitoring function module has the battery coding circuit, and host computer is by communication stube cable access monitoring functional module, directly obtains the data of the numbering of each cell and voltage thereof, electric current, temperature;
(5) when stopping for charging, on monitoring module, carry additionally the charge balancing module, battery management system starts the automatic charge equalization function, realizes the charging automatic equalization of battery pack, keeps interior each cell of battery pack that the harmony of electric weight is provided.
2. a kind of cell management system of electric automobile of constituting of method according to claim 1 comprises monitoring module group (202), battery pack (203) and charge balancing module cage (204), and is subjected to host computer (201) management and control, it is characterized in that:
Monitoring module group (202) has n monitoring module, n=1～N wherein, and N is the natural number greater than 1, the cell (22n) that each monitoring module (21n) is corresponding with battery pack is connected;
N charge balancing module arranged in the charge balancing module cage (204), n=1～N wherein, N is the natural number greater than 1, each charge balancing module (23n), and the monitoring module (21n) corresponding with a cell of battery pack (22n) set up plug-in type by multicore communication cable (24n) and connected;
Be in the vehicle of transport condition, do not carry or carry charge balancing module cage (204), if carry charge balancing module cage (204), then each monitoring module (211～21N) with corresponding charge balancing module (231～23N) disconnect plug-in types connects, and the charge balancing module is in off-position and consumed power not;
When vehicle parking is in charged state, ((241～24N) plug inserts relative detecting module (211～21N) multi-core socket to 231～23N) multicore communication cable to each charge balancing module in the charge balancing module cage (204), the charge balancing module is in and powers up operating state, and the commands for controlling of pressing host computer (201) is to the administration equalizing charge of battery.
3. a kind of cell management system of electric automobile as claimed in claim 2, monitoring module 21n comprises voltage collection circuit (301), current acquisition circuit (302), temperature sensor (303), filter circuit (304), warning circuit (306), microprocessor (307), communicating circuit (310), power supply (311), it is characterized in that: also comprise charge balancing multi-core socket (305), battery coding circuit (308), buffer circuit (309) and communicating circuit multi-core socket (312); Microprocessor (307) single-chip microcomputer that has a plurality of A/D converters, serial line interface, parallel interface and RAM; Power supply (311) is the DC/DC insulating power supply;
The output of voltage collection circuit (301), current acquisition circuit (302) and temperature sensor (303) is connected on the input of filter circuit (304) respectively, and the output of filter circuit (304) is connected with 3 A/D conversion input ports of microprocessor (307); A plurality of input/output interfaces of microprocessor (307) are connected with the input of buffer circuit (309), the output of battery coding circuit (308) and the holding wire end points of charge balancing multi-core socket (305) with warning circuit (306) respectively; The input of the battery line end points of charge balancing multi-core socket (305) and voltage collection circuit (301) is by cable and n
#The electrode of battery (22n) connects; The output of buffer circuit (309) is connected with communicating circuit (310); Communicating circuit multi-core socket (312) is connected with communication interface by the power supply of communication cable (25n) with host computer (101); The power line end points of communicating circuit multi-core socket (312) connects the input of DC/DC insulating power supply (311) and the input of communicating circuit (310) power supply; The output of DC/DC insulating power supply (311) is the circuit supply of monitoring module (21n).
4. a kind of cell management system of electric automobile as claimed in claim 2, each charge balancing module (23n) of charge balancing module cage (204) has charging circuit (401) and high voltage source (406), it is characterized in that: also comprise current-limiting control circuit (402), charging circuit multi-core socket (403) and multicore communication cable (24n); The two ends of multicore communication cable (24n) have charging circuit multi-pin connector (404) and charge balancing multi-pin connector (405);
Current-limiting control circuit (402) is attempted by the output of charging circuit (401), the charging current and the voltage of control charging circuit (401) output; The output of charging circuit (401) is connected on the charging heart yearn end of charging circuit multi-core socket (403), the power end of charging circuit (401) is connected on the output of high voltage source (406), charging circuit multi-core socket (403) is gone up grafting charging circuit multi-pin connector (404), the charge balancing multi-pin connector (405) of multicore communication cable (24n) other end, when the needs equalizing charge, it is inserted the charge balancing multi-core socket of relative detecting module;
Charging circuit (401) adopts controlled DC/DC charge power module or metal-oxide-semiconductor or IGBT power device, a control end is connected the microprocessor (307) of monitoring module with plugs and sockets through multicore communication cable (24n), microprocessor control charging circuit (401) is in charging or static condition, and another Current limited Control end connects the control end of current-limiting control circuit (402).
5. a kind of cell management system of electric automobile as claimed in claim 3, each charge balancing module (23n) of charge balancing module cage (204) has charging circuit (401) and high voltage source (406), it is characterized in that: also comprise current-limiting control circuit (402), charging circuit multi-core socket (403) and multicore communication cable (24n); The two ends of multicore communication cable (24n) have charging circuit multi-pin connector (404) and charge balancing multi-pin connector (405);
Current-limiting control circuit (402) is attempted by the output of charging circuit (401), the charging current and the voltage of control charging circuit (401) output; The output of charging circuit (401) is connected on the charging heart yearn end of charging circuit multi-core socket (403), the power end of charging circuit (401) is connected on the output of high voltage source (406), charging circuit multi-core socket (403) is gone up grafting charging circuit multi-pin connector (404), the charge balancing multi-pin connector (405) of multicore communication cable (24n) other end, when the needs equalizing charge, it is inserted the charge balancing multi-core socket of relative detecting module;
Charging circuit (401) adopts controlled DC/DC charge power module or metal-oxide-semiconductor or IGBT power device, a control end is connected the microprocessor (307) of monitoring module with plugs and sockets through multicore communication cable (24n), microprocessor control charging circuit (401) is in charging or static condition, and another Current limited Control end connects the control end of current-limiting control circuit (402).
6. as claim 2 or 3 or 4 described a kind of cell management system of electric automobile, it is characterized in that: (241～24N) adopt multicore cable to the communication stube cable, comprise two holding wires and two power lines of adopting many heart yearns and connecing, the power taking from the power line of communication cable (24n) of the DC/DC insulating power supply (412) of monitoring module (21n) and equalizing charge module (23n), output voltage is V
2Independently accessory power supply power supply of communicating circuit, supply power voltage is V
1, or directly power taking from the power line of communication cable (24n), supply power voltage is V
0
7. a kind of cell management system of electric automobile as claimed in claim 5, it is characterized in that: (241～24N) adopt multicore cable to the communication stube cable, comprise two holding wires and two power lines of adopting many heart yearns and connecing, the power taking from the power line of communication cable (24n) of the DC/DC insulating power supply (412) of monitoring module (21n) and equalizing charge module (23n), output voltage is V
2Independently accessory power supply power supply of communicating circuit, supply power voltage is V
1, or directly power taking from the power line of communication cable (24n), supply power voltage is V
0
8. as claim 2 or 3 or 4 described a kind of cell management system of electric automobile, it is characterized in that: monitoring module (21n) has battery coding circuit (308), it provides coded data for cell, and the output of battery coding circuit (308) connects the coded data acquisition port of monitoring module (21n) microprocessor (307).
9. a kind of cell management system of electric automobile as claimed in claim 7, it is characterized in that: monitoring module (21n) has battery coding circuit (308), it provides coded data for cell, and the output of battery coding circuit (308) connects the coded data acquisition port of monitoring module (21n) microprocessor (307).
10. as claim 2 or 3 or 5 or 7 or 9 described a kind of cell management system of electric automobile, it is characterized in that: current-limiting control circuit (402) is by current sampling circuit (601), predetermined current value comparator (602) and control circuit (603) are formed, current sampling circuit (601) input is connected on the current sampling loop of charging circuit (401), current sampling circuit (601) output is connected to the comparison current input terminal of predetermined current value comparison circuit (602), current value comparison circuit (602) output is connected with the control input end of control circuit (603), the output of control circuit (603) is connected on the output current limiting control end of controlled DC/DC charge power module, according to sample rate current I
SWith preestablish charge balancing value In
0Comparative result, work as I
S≧ In
0The time, the control charging circuit enters the current-limiting charge state.
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| CNB200510050287XA CN100495805C (en) | 2005-04-18 | 2005-04-18 | Method for forming battery running system of electric vehicle and system |
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| CNB200510050287XA CN100495805C (en) | 2005-04-18 | 2005-04-18 | Method for forming battery running system of electric vehicle and system |
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