CN103855748B - The charging system and its charging method of a kind of vehicle - Google Patents

The charging system and its charging method of a kind of vehicle Download PDF

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Publication number
CN103855748B
CN103855748B CN201210518504.3A CN201210518504A CN103855748B CN 103855748 B CN103855748 B CN 103855748B CN 201210518504 A CN201210518504 A CN 201210518504A CN 103855748 B CN103855748 B CN 103855748B
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China
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charging
battery
battery pack
vehicle
entire car
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CN103855748A (en
Inventor
陈东
曾小炫
林福照
毛承志
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BYD Co Ltd
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BYD Co Ltd
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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

A kind of charging system of vehicle, including electrokinetic cell, first battery manager, direct current transducer, entire car controller and accumulator cell assembly, the break-make of the vehicle control unit controls direct current transducer make electrokinetic cell start or stop charging to accumulator cell assembly, the accumulator cell assembly includes battery pack, charge DC/DC and the second battery manager, during electrokinetic cell is to accumulator cell assembly charging, the battery status information that entire car controller is uploaded according to the first battery manager and the second battery manager, control the break-make of direct current transducer to start or stop electrokinetic cell and give accumulator cell assembly charging, and the second battery manager monitors battery state, the control charging DC/DC charges to battery pack, therefore the charging system of above-mentioned vehicle, accumulator cell assembly state can be monitored in real time, effective management can be implemented to the charging of accumulator cell assembly.

Description

The charging system and its charging method of a kind of vehicle
Technical field
The present invention relates to the charging system and its charging method in new energy vehicle field, more particularly to a kind of vehicle.
Background technology
Battery is a kind of critically important parts in vehicular field, and can battery directly influence vehicle and normally open Move and to power supply for electrical equipment, vehicle in the process of moving, can consume the electricity of a part of battery, if battery is excessively put Electricity can cause discharged or defective battery, and the dump energy of battery is less than electricity is started, and directly resulting in vehicle can not start next time, therefore Need to charge to vehicle-mounted battery.
In the prior art, battery does not possess the function of battery management, the process charged a battery in external power source In, it can cause to overcharge battery, or even damage battery.
The content of the invention
The technical problems to be solved by the invention are that the battery for being directed to prior art can not monitor battery in real time in itself State, accumulator cell assembly state can be monitored in real time there is provided one kind by easily causing the problem of overcharging, can be to batteries The charging system and its charging method of the vehicle effectively managed are implemented in the charging of part.
The above-mentioned technical problem of the present invention is achieved by the following technical programs:A kind of charging system of vehicle, including Electrokinetic cell, the first battery manager, direct current transducer, entire car controller and accumulator cell assembly;First battery management Device connects electrokinetic cell and entire car controller respectively, the state for monitoring electrokinetic cell, and status information is uploaded to described Entire car controller;The direct current transducer is connected between electrokinetic cell and accumulator cell assembly, in electrokinetic cell and electric power storage Voltage conversion is carried out between the component of pond;The entire car controller is connected with direct current transducer and accumulator cell assembly respectively, for controlling The break-make of direct current transducer processed make electrokinetic cell start or stop charging to accumulator cell assembly;The accumulator cell assembly includes battery Group, charging DC/DC and the second battery manager, second battery manager are used to monitor battery state, and control institute Charging DC/DC is stated to charge to battery pack.
Further, the entire car controller is connected with second battery manager, and second battery manager is used In the status information of battery pack is uploaded into entire car controller.
Further, the entire car controller is used for when the dump energy of the battery pack is less than SOC is started, it is allowed to control Direct current transducer conducting processed, makes electrokinetic cell start to accumulator cell assembly and charges;And the entire car controller is used for described When the dump energy of battery pack is 100%, it is allowed to control direct current transducer to disconnect, electrokinetic cell is set to stop filling to accumulator cell assembly Electricity.
Further, the entire car controller is used for the temperature in the battery pack in minimum temperature threshold to maximum temperature When between threshold value, it is allowed to control direct current transducer to turn on, electrokinetic cell is started to accumulator cell assembly and charge;And the vehicle Controller is used for when the temperature of the battery pack is less than minimum temperature threshold or higher than maximum temperature threshold value, it is allowed to which control is straight Stream transformer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly.
Further, the charging DC/DC includes DC relays, and second battery manager is used to trigger DC relays It is turned on or off, and then controls charging DC/DC to export different charging currents to battery pack.
Further, the first electrode of the battery pack connects the positive pole of electrokinetic cell, the second electrode connection of battery pack The negative pole of electrokinetic cell;The first input end of the charging DC/DC connects the positive pole of electrokinetic cell, the first output end connection power The negative pole of battery, the second input is connected with the second battery manager, and the second output end is connected with battery pack;Second battery Manager connects the positive pole and negative pole of electrokinetic cell respectively;Set between the first electrode of the battery pack and the positive pole of electrokinetic cell It is equipped with counnter attack diode.
Further, the vehicle is pure electric vehicle or hybrid electric vehicle.
Invention further provides a kind of charging method of the charging system of above-mentioned car two, comprise the following steps:Institute State the second battery manager and monitor the state of temperature and state of charge of battery pack, and status information is uploaded to entire car controller; The entire car controller the battery pack temperature in minimum temperature threshold between maximum temperature threshold value when, it is and described whole Vehicle controller is when the dump energy of the battery pack is less than SOC is started, and control direct current transducer conducting makes electrokinetic cell to storage Battery component starts charging;Second battery manager is used to monitor battery state, and controls the charging DC/DC to electricity Pond group charging;The entire car controller is when the dump energy of the battery pack is 100%, and control direct current transducer disconnects, and makes Power battery stops charging to accumulator cell assembly, charging complete.
Further, the charging system of the vehicle carries out fault self-checking, and fail result is uploaded into entire car controller, And when the charging system of the vehicle breaks down, the vehicle control unit controls direct current transducer disconnects, complete charge.
Further, including:The entire car controller is less than minimum temperature threshold or height in the temperature of the battery pack When maximum temperature threshold value, control direct current transducer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly.
Further, it is further comprising the steps of before the S101 steps when detecting vehicle for OFF grades of electricity, it is described Entire car controller detect car door, boot or front hatch cover be in be not turned off state when, control direct current transducer disconnect, do not permit Perhaps electrokinetic cell charges to accumulator cell assembly.
Further, it is further comprising the steps of after the S103 steps when detecting vehicle for OFF grades of electricity, it is described Entire car controller detects car door, boot or front hatch cover in when being not turned off state, and control direct current transducer disconnects, and makes power Battery stops charging to accumulator cell assembly.
Further, second battery manager is according to the difference of battery pack temperature, and DC/DC is to battery pack for control charging The different charging current of output.
Further, the second battery manager control charging DC/DC is charged with the charging modes of constant pressure to battery pack.
A kind of charging system of the vehicle provided according to the present invention, including:Electrokinetic cell, the first battery manager, direct current Converter, entire car controller and accumulator cell assembly;First battery manager connects electrokinetic cell and full-vehicle control respectively Device, the state for monitoring electrokinetic cell, and status information is uploaded to the entire car controller;The direct current transducer connection Between electrokinetic cell and accumulator cell assembly, for carrying out voltage conversion between electrokinetic cell and accumulator cell assembly;It is described whole Vehicle controller is connected with direct current transducer and accumulator cell assembly respectively, for controlling the break-make of direct current transducer to open electrokinetic cell Move or stop charging to accumulator cell assembly;The accumulator cell assembly includes battery pack, charging DC/DC and the second battery management Device, second battery manager is used to monitor battery state, and controls the charging DC/DC to be charged to battery pack.It is above-mentioned In the charging system of vehicle, accumulator cell assembly is matched as low-tension supply, the second battery manager with low-tension supply, in real time monitoring The state of battery pack, electrokinetic cell is matched as high voltage power supply, the first battery manager with high voltage power supply, and power electric is monitored in real time The state in pond, therefore accumulator cell assembly and electrokinetic cell have independent battery management function respectively, in electrokinetic cell to electric power storage During the component charging of pond, the battery status that entire car controller is uploaded according to the first battery manager and the second battery manager Information, controls the break-make of direct current transducer to start or stop electrokinetic cell and gives accumulator cell assembly charging, and the second cell tube Device monitoring battery state is managed, controls the charging DC/DC to be charged to battery pack, therefore the charging system of above-mentioned vehicle, energy Enough monitoring accumulator cell assembly states in real time, can implement effective management to the charging of accumulator cell assembly.
In addition, a kind of charging method of the charging system of the above-mentioned vehicle provided according to invention, comprises the following steps:It is described Second battery manager monitors the state of temperature and state of charge of battery pack, and status information is uploaded into entire car controller;Institute State temperature of the entire car controller in the battery pack in minimum temperature threshold between maximum temperature threshold value when, and the vehicle Controller is when the dump energy of the battery pack is less than SOC is started, and control direct current transducer conducting makes electrokinetic cell to electric power storage Pond component starts charging;Second battery manager is used to monitor battery state, and controls the charging DC/DC to battery Group charging;The entire car controller is when the dump energy of the battery pack is 100%, and control direct current transducer disconnects, and makes power Battery stops charging to accumulator cell assembly.According to above-mentioned charging method, entire car controller is according to the first battery manager and The information that two battery managers are uploaded, controls the break-make of direct current transducer to start or stop electrokinetic cell and is filled to accumulator cell assembly Electricity, the second battery manager monitoring battery state, and control the charging DC/DC to be charged to battery pack, it can monitor in real time Accumulator cell assembly state, can implement effective management to the charging of accumulator cell assembly.
Brief description of the drawings
Fig. 1 is the charging system block diagram of vehicle in an embodiment of the present invention.
Fig. 2 is the electrical connection graph of accumulator cell assembly in an embodiment of the present invention.
Fig. 3 is the flow chart of the charging method of the charging system of vehicle in an embodiment of the present invention.
Fig. 4 be in an embodiment of the present invention on vehicle during ON grades of electricity the charging method of the charging system of vehicle flow Figure.
Fig. 5 be in an embodiment of the present invention on vehicle during OFF grades of electricity the charging method of the charging system of vehicle flow Figure.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with Drawings and Examples, the present invention will be described in further detail, it will be appreciated that specific embodiment described herein is only used To explain the present invention, it is not intended to limit the present invention.
In the description of the invention, it is to be understood that term " on ", " under ", "left", "right", " vertical ", " level ", The orientation or position relationship of the instruction such as "front", "rear", " interior ", " outer " for based on accompanying drawing orientation or position relationship, merely to Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In the description of the invention, it is necessary to explanation, unless otherwise prescribed and limit, term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be mechanically connect or electrical connection or the connection of two element internals, can , for a person skilled in the art, can be according to tool to be to be joined directly together or be indirectly connected to by intermediary Body situation understands the concrete meaning of above-mentioned term.
The charging system block diagram of vehicle in an embodiment of the present invention as shown in Figure 1, a kind of charging system of vehicle, bag Include electrokinetic cell 20, the first battery manager 40, direct current transducer 60, entire car controller 50 and accumulator cell assembly 10.It is described Electrokinetic cell 20 is used as the traveling offer energy of the high voltage power supply, predominantly vehicle of vehicle, 40 points of first battery manager Not Lian Jie electrokinetic cell 20 and entire car controller 50, further, first manager 40 passes through line and the electrokinetic cell of sampling 20 connections, gather the information, the state for monitoring electrokinetic cell 20 such as electricity, voltage, the temperature of electrokinetic cell 20;Described first Battery manager 40 is connected by CAN lines with entire car controller 50, and above-mentioned status information is uploaded into the full-vehicle control Device 50.
The direct current transducer 60 is connected between electrokinetic cell 20 and accumulator cell assembly 10, in the He of electrokinetic cell 20 Voltage conversion is carried out between accumulator cell assembly 10, because electrokinetic cell 20 is as high voltage power supply, accumulator cell assembly 10 is used as low pressure Power supply, in the embodiment that the present invention is provided, when the accumulator cell assembly 10 charges, input voltage is 13.6V.The direct current turns Parallel operation 60 includes DC relays, by the break-make of DC relays, to control the break-make of direct current transducer 60 to start electrokinetic cell Or stop charging to accumulator cell assembly 10.
The entire car controller 50 is connected with direct current transducer 60 and accumulator cell assembly 10 respectively, the entire car controller 50 Connected by CAN lines, according to the state of accumulator cell assembly 10, the break-make for controlling direct current transducer 60 opens electrokinetic cell 20 Move or stop charging to accumulator cell assembly 10.
The electrical connection graph of accumulator cell assembly in an embodiment of the present invention as shown in Figure 2.The accumulator cell assembly 10 is wrapped Battery pack 11, charging DC/DC12 and the second battery manager 13 are included, second battery manager 13 is used to monitor battery pack 11 states, and control the charging DC/DC12 to be charged to battery pack 11.Accumulator cell assembly 10 is used as low-tension supply, the second battery Manager 13 is matched with low-tension supply, in real time the state of monitoring battery pack 11, and electrokinetic cell 20 is used as high voltage power supply, the first battery Manager 40 is matched with high voltage power supply, the state of monitoring electrokinetic cell 20, therefore accumulator cell assembly 10 and electrokinetic cell 20 in real time There is independent battery management function respectively, a total battery manager is integrated in compared to by two above-mentioned battery managers In, the charging system for the vehicle that the present invention is provided, by for the module and program of low-tension supply and the module for high voltage power supply Separated with program, simplify programming and the structure design of battery manager, make the work of the charging system of vehicle more steady It is fixed reliable;During electrokinetic cell 20 charges to accumulator cell assembly 10, entire car controller 50 is according to the first battery manager 40 and second battery manager 13 upload battery status information, control direct current transducer 50 break-make start electrokinetic cell 20 Or stop charging to accumulator cell assembly 10, and the second battery manager 13 monitoring state of battery pack 11, control the charging DC/ DC12 is charged to battery pack 11, therefore the charging system of above-mentioned vehicle, and the state of accumulator cell assembly 10 can be monitored in real time, can be with Effective management, the problem of can not only avoiding the occurrence of overcharged are implemented in charging to accumulator cell assembly 10, and can be used Different charging modes are implemented to charge to accumulator cell assembly 10.
In the embodiment that the present invention is provided, the entire car controller 50 is connected with the second battery manager 13, vehicle control The battery manager 13 of device 50 and second processed is connected by CAN lines, and the second battery manager 13 is used to believe the state of battery pack 11 Breath is uploaded to entire car controller 50, and then entire car controller 50 is according to this status information, and the break-make of control direct current transducer 60 makes Electrokinetic cell 20 is started or stoped to charge to accumulator cell assembly 10.
In the embodiment that the present invention is provided, the entire car controller 50 is connected with the first battery manager 40, works as detection When being less than the electricity of battery pack 11 to the electricity of electrokinetic cell 20, entire car controller 50 is according to this status information, and control direct current turns Parallel operation 60 disconnects, and does not allow electrokinetic cell 20 to be charged to accumulator cell assembly 10.
Because when the dump energy of battery pack 11 is less than SOC is started, it is impossible to normally start vehicle, so being carried in the present invention In the embodiment of confession, the entire car controller 50 is used for when the dump energy of the battery pack 11 is less than SOC is started, it is allowed to control Direct current transducer 60 processed is turned on, and electrokinetic cell 20 is started charging to accumulator cell assembly 10, the startup SOC is with battery pack 11 The change of temperature and change, be not a fixed value;And the entire car controller 50 is used in the battery pack 11 When dump energy is 100%, it is allowed to control direct current transducer 60 to disconnect, electrokinetic cell 20 is set to stop charging to accumulator cell assembly 10.
In the embodiment that the present invention is provided, the entire car controller 50 is used for the temperature in the battery pack 11 minimum When temperature threshold is between maximum temperature threshold value, it is allowed to control direct current transducer 60 to turn on, make electrokinetic cell 20 to batteries Part 10 starts charging;And the entire car controller 50 be used for temperature in the battery pack 11 less than minimum temperature threshold or During higher than maximum temperature threshold value, it is allowed to control direct current transducer 60 to disconnect, electrokinetic cell 20 is set to stop filling to accumulator cell assembly 10 Electricity.Further, the minimum temperature threshold is -40 degrees Celsius, and maximum temperature threshold value is 85 degrees Celsius.
The charging DC/DC includes DC relays 125, and second battery manager 13 is used to trigger DC relays 125 It is turned on or off, and then controls charging DC/DC12 to export different charging currents to battery pack 11, further, the second battery The ON time of the control DC of manager 13 relays 125 and the proportionate relationship of turn-off time, change charging DC/DC12 output currents Dutycycle, so as to change the size of charging current.
Second battery manager 13 is connected with charging DC/DC12 and battery pack 11 respectively, second battery management Device 13 monitors the state of battery pack 11, controls the DC/DC12 to be charged to battery pack 11, and controls the battery pack 11 to discharge.Enter One step, the second battery manager 13 is connected by CAN lines with charging DC/DC12, while also passing through line and the battery pack 11 of sampling It is connected, to carry out battery temperature sampling, voltage sample, current sample and electric power detection etc. to battery pack 11.
The battery pack 11, charging DC/DC12 and the second battery manager 13 are integrated in accumulator cell assembly 10.At this In one embodiment of invention, the first electrode 111 of the battery pack 11 connects the positive pole 21 of electrokinetic cell 20, battery pack 11 Second electrode 112 connects the negative pole 22 of electrokinetic cell 20;The connection electrokinetic cell of first input end 122 of the charging DC/DC12 Positive pole 21, the first output end 123 connects the negative pole 22 of electrokinetic cell, the second input 124 of the charging DC/DC12 and the Two battery managers 13 are connected, and the second output end 121 of the charging DC/DC12 is connected with battery pack 11.Accumulator cell assembly shape Into following charge circuit:Electric current is sent from the positive pole of electrokinetic cell 20, by the positive pole of accumulator cell assembly, passes through the DC/DC12 that charges First input end 122 enter charging DC/DC12, then second output end 121 of the electric current through overcharge DC/DC enter battery pack 11, pass through from the second electrode 112 of battery pack 11, it is final to import the negative pole 22 of electrokinetic cell, returned so as to form complete charging Road.Preferably, counnter attack diode 14 is provided between the first electrode 111 of the battery pack and the positive pole 21 of electrokinetic cell, Electric current realizes one-way conduction between the first electrode 111 of battery pack and the positive pole 21 of electrokinetic cell, so that accumulator cell assembly 10 charge circuit and discharge loop is relatively independent, does not interfere with each other.
Second battery manager 13 connects the positive pole 21 and negative pole 22 of electrokinetic cell respectively.
The battery pack 11 is ferric phosphate lithium cell, is composed in series by 4 batteries monomers.
The vehicle is pure electric vehicle or hybrid electric vehicle.
The flow chart of the charging method of the charging system of vehicle in an embodiment of the present invention as shown in Figure 3.A kind of car Charging system charging method, comprise the following steps:
S101:Second battery manager 13 monitors the state of temperature and state of charge of battery pack 11, and by status information Reach entire car controller 50.
When detecting vehicle for OFF grades of electricity, further comprising the steps of before the S101 steps, the full-vehicle control Device 50 detect car door, boot or front hatch cover be in be not turned off state when, control direct current transducer 60 disconnect, can not allow Power battery 20 charges to accumulator cell assembly 10.
S102:Entire car controller 50 the battery pack 11 temperature in minimum temperature threshold between maximum temperature threshold value When, and the entire car controller 50 controls direct current transducer 60 when the dump energy of the battery pack 11 is less than SOC is started Conducting, makes electrokinetic cell 20 start charging to accumulator cell assembly 10;Preferably, further comprising:The entire car controller 50 When the temperature of the battery pack is less than minimum temperature threshold or higher than maximum temperature threshold value, control direct current transducer 60 breaks Open, electrokinetic cell 20 is stopped charging to accumulator cell assembly 10.
S103:Second battery manager 13 is used to monitor the state of battery pack 11, and controls the charging DC/DC12 to electricity Pond group 11 charges.The charging DC/DC12 includes DC relays 125, the triggering DC of the second battery manager 13 relays 125 It is turned on or off, and then controls charging DC/DC12 to export different charging currents to battery pack 11.Because the property of battery pack 11 Temperature with itself is closely related, for the property according to battery pack, and realization is preferably charged, in the present embodiment, the second electricity Pool manager 13 controls charging DC/DC12 to export different charging currents to battery pack 11 according to the difference of battery pack temperature.
In one embodiment, the control of the second battery manager 13 charging DC/DC12 is given with the charging modes of constant pressure Battery pack 11 charges, because battery pack internal resistance is continually changing, charging current also changes therewith, and the charging current is with filling The increase of electric time is gradually successively decreased.
In another embodiment, second battery manager 13 control charging DC/DC12 is different with three kinds successively Charging modes charge to battery pack:Trickle mode, current constant mode and constant voltage mode.Trickle mode main function is to excite battery Activity inside group;Current constant mode main function is to be filled with most electric current to battery pack;Constant voltage mode main function is anti- Only overcharged to battery pack.Charging current is relevant with the dump energy of battery pack, and the dump energy of battery pack is bigger, charging electricity Stream is smaller;Charging interval is also relevant with the dump energy of battery pack, and the dump energy of battery pack is bigger, and the charging interval is smaller.
When detecting vehicle for OFF grades of electricity, further comprising the steps of after the S103 steps, the full-vehicle control Device 50 detects car door, boot or front hatch cover in when being not turned off state, and control direct current transducer 60 disconnects, and makes electrokinetic cell 20 stop charging to accumulator cell assembly 10.
S104:Entire car controller 50 is when the dump energy of the battery pack 11 is 100%, and control direct current transducer 60 breaks Open, electrokinetic cell 20 is stopped charging, charging complete to accumulator cell assembly 10.
In the charging system course of work of vehicle, the charging system of the vehicle carries out fault self-checking, and by failure knot Fruit is uploaded to entire car controller 50, and when the charging system of the vehicle breaks down, the entire car controller 50 is controlled directly Stream transformer 60 disconnects, complete charge.
Fig. 4 be in an embodiment of the present invention on vehicle during ON grades of electricity the charging method of the charging system of vehicle flow Figure, comprises the following steps:
S201:ON grades of electricity on vehicle;
S202:Monitor the temperature and dump energy of battery pack;
S203:The temperature of battery pack whether in minimum temperature threshold between maximum temperature threshold value, if it is, performing S205, if not, performing S204;
S204:Vehicle control unit controls direct current transducer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly;
S205:Whether the dump energy of battery pack is less than startup SOC;If it is, S207 is performed, if not, performing S206;
S206:Vehicle control unit controls direct current transducer disconnects, and accumulator cell assembly stops charging;
S207:Vehicle control unit controls direct current transducer is turned on, and electrokinetic cell is started to accumulator cell assembly and is charged;
S208:Second battery manager monitors battery state, and controls the charging DC/DC to be charged to battery pack;
S209:Whether the dump energy of battery pack is 100%, if it is, S210 is performed, if not, performing S207.
Fig. 5 be in an embodiment of the present invention on vehicle during OFF grades of electricity the charging method of the charging system of vehicle flow Figure, comprises the following steps:
S301:OFF grades of electricity on vehicle;
S302:Whether detection car door, front hatch cover or boot are closed, if it is, S304 is performed, if not, Perform S303;
S303:Vehicle control unit controls direct current transducer disconnects, and does not allow electrokinetic cell to be charged to accumulator cell assembly;
S304:The temperature of battery pack whether in minimum temperature threshold between maximum temperature threshold value, and battery pack is surplus Whether remaining electricity is less than SOC is started, if it is, S306 is performed, if not, performing S305;
S305:Vehicle control unit controls direct current transducer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly;
S306:Vehicle control unit controls direct current transducer is turned on, and electrokinetic cell is started to accumulator cell assembly and is charged;
S307:Second battery manager monitors battery state, and controls the charging DC/DC to be charged to battery pack;
S308:Whether detection car door, front hatch cover or boot are closed, if it is, S310 is performed, if not, Perform S309;
S309:Vehicle control unit controls direct current transducer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly;
S310:Whether the dump energy of battery pack is 100%, if it is, S311 is performed, if not, performing S306;
S311:Vehicle control unit controls direct current transducer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly, charging Complete.
Preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, all essences in the present invention Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.

Claims (14)

1. a kind of charging system of vehicle, including:Electrokinetic cell, the first battery manager, direct current transducer, entire car controller with And accumulator cell assembly;
First battery manager connects electrokinetic cell and entire car controller respectively, the state for monitoring electrokinetic cell, and Status information is uploaded to the entire car controller;
The direct current transducer is connected between electrokinetic cell and accumulator cell assembly, for electrokinetic cell and accumulator cell assembly it Between carry out voltage conversion;
The entire car controller is connected with direct current transducer and accumulator cell assembly respectively, for controlling the break-make of direct current transducer to make Electrokinetic cell, which is started or stoped, gives accumulator cell assembly charging;
Characterized in that, the accumulator cell assembly includes battery pack, charging DC/DC and the second battery manager, described second Battery manager is used to monitor battery state, and controls the charging DC/DC to be charged to battery pack;
Counnter attack diode is provided between the first electrode of the battery pack and the positive pole of electrokinetic cell.
2. the charging system of vehicle as claimed in claim 1, it is characterised in that the entire car controller and second battery Manager is connected, and second battery manager is used to the status information of battery pack being uploaded to entire car controller.
3. the charging system of vehicle as claimed in claim 2, it is characterised in that the entire car controller is used in the battery When the dump energy of group is less than SOC is started, it is allowed to control direct current transducer to turn on, electrokinetic cell is started to accumulator cell assembly and fill Electricity;And the entire car controller is used for when the dump energy of the battery pack is 100%, it is allowed to control direct current transducer to break Open, make electrokinetic cell stop charging to accumulator cell assembly.
4. the charging system of vehicle as claimed in claim 2, it is characterised in that the entire car controller is used in the battery The temperature of group is when minimum temperature threshold is between maximum temperature threshold value, it is allowed to controls direct current transducer to turn on, makes electrokinetic cell Start to accumulator cell assembly and charge;And the entire car controller is used to be less than minimum temperature threshold in the temperature of the battery pack Or during higher than maximum temperature threshold value, it is allowed to control direct current transducer to disconnect, make electrokinetic cell stop charging to accumulator cell assembly.
5. the charging system of vehicle as claimed in claim 1, it is characterised in that the charging DC/DC includes DC relays, institute State the second battery manager to be turned on or off for triggering DC relays, and then control charging DC/DC to export different to battery pack Charging current.
6. the charging system of vehicle as claimed in claim 1, it is characterised in that
The first electrode of the battery pack connects the positive pole of electrokinetic cell, and the second electrode of battery pack connects the negative of electrokinetic cell Pole;
The first input end of the charging DC/DC connects the positive pole of electrokinetic cell, and the first output end connects the negative pole of electrokinetic cell, Second input is connected with the second battery manager, and the second output end is connected with battery pack;
The positive pole and negative pole for the electrokinetic cell that second battery manager is connected respectively.
7. the charging system of vehicle as claimed in claim 1, it is characterised in that the vehicle is that pure electric vehicle or mixing are dynamic Power car.
8. a kind of charging method of the charging system of the vehicle in 1-7 such as claim as described in any one, it is characterised in that bag Include following steps:
S101:Second battery manager monitors the state of temperature and state of charge of battery pack, and status information is uploaded to Entire car controller;
S102:The entire car controller the battery pack temperature in minimum temperature threshold between maximum temperature threshold value when, And the entire car controller is when the dump energy of the battery pack is less than SOC is started, control direct current transducer conducting makes Power battery starts to accumulator cell assembly to charge;
S103:Second battery manager is used to monitor battery state, and controls the charging DC/DC to be filled to battery pack Electricity;S104:The entire car controller is when the dump energy of the battery pack is 100%, and control direct current transducer disconnects, and makes Power battery stops charging to accumulator cell assembly, charging complete.
9. charging method as claimed in claim 8, it is characterised in that the charging system of the vehicle carries out fault self-checking, and Fail result is uploaded to entire car controller, and when the charging system of the vehicle breaks down, the entire car controller control Direct current transducer processed disconnects, complete charge.
10. charging method as claimed in claim 8, it is characterised in that further comprise:The entire car controller is in the electricity When the temperature of pond group is less than minimum temperature threshold or higher than maximum temperature threshold value, control direct current transducer disconnects, and makes power electric Pond stops charging to accumulator cell assembly.
11. charging method as claimed in claim 8, it is characterised in that when detecting vehicle for OFF grades of electricity, described It is further comprising the steps of before S101 steps, the entire car controller detect car door, boot or front hatch cover be in be not turned off During state, control direct current transducer disconnects, and does not allow electrokinetic cell to be charged to accumulator cell assembly.
12. charging method as claimed in claim 8, it is characterised in that when detecting vehicle for OFF grades of electricity, described It is further comprising the steps of after S103 steps, the entire car controller detect car door, boot or front hatch cover be in be not turned off shape During state, control direct current transducer disconnects, and makes electrokinetic cell stop charging to accumulator cell assembly.
13. charging method as claimed in claim 8, it is characterised in that second battery manager is according to battery pack temperature Difference, control charging DC/DC exports different charging currents to battery pack.
14. charging method as claimed in claim 8, it is characterised in that the second battery manager control charging DC/DC with The charging modes of constant pressure charge to battery pack.
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