CN106965700A - A kind of electric automobile heating charging circuit and charging method - Google Patents
A kind of electric automobile heating charging circuit and charging method Download PDFInfo
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- CN106965700A CN106965700A CN201710292831.4A CN201710292831A CN106965700A CN 106965700 A CN106965700 A CN 106965700A CN 201710292831 A CN201710292831 A CN 201710292831A CN 106965700 A CN106965700 A CN 106965700A
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- battery bag
- temperature
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- value
- heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a kind of electric automobile heating charging circuit and charging method, wherein electric automobile heating charging circuit includes:Battery bag, battery bag is connected with charging pile；The entire car controller being connected with battery bag and charging pile；The temperature value of battery bag is compared by entire car controller with the first temperature threshold and second temperature threshold value, obtains comparative result；According to comparative result, heating and the charged state of battery bag are controlled.The present invention can be according to the temperature information of battery bag, determine corresponding charging and heating strategy, realize and fill heating soon under low-temperature condition, simultaneously vehicle while charging while heating mode under, the normal charging interval is not interfered with yet, with the increase of battery bag temperature, it can effectively shorten the charging interval, facility is provided for automobile user.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to a kind of electric automobile heating charging circuit and charging side
Method.
Background technology
Current China electric automobile is in the high speed development stage, but the rechargeable battery of electric automobile is at low ambient temperatures
But can not directly it be charged.The charging modes of existing electric automobile are based on direct current charge and exchanging trickle charge, due to portion of China
Region-by-region winter temperature is relatively low, so many electric automobiles have all done battery exchange slowly in order to be able to charge normal at low temperatures
The heating strategy filled, the heating strategy of direct current charge is not done but, and direct current charge is carried out when vehicle is desired at low temperatures, must
Battery must be heated to after certain temperature by exchanging trickle charge just switch to fill soon.During by carrying out low temperature charging with upper type,
User operates very inconvenient, if the place of storing cycle can not carry out exchanging trickle charge, vehicle is at low temperatures
It can not be charged, significantly limit the use value of electric automobile and the popularization of electric automobile.
The content of the invention
The embodiment of the present invention provides a kind of electric automobile heating charging circuit and charging method, to solve car in the prior art
When being charged under low-temperature condition, cause user inconvenient for use and the use value of limitation electric automobile and asking for popularization
Topic.
The embodiment of the present invention provides a kind of electric automobile heating charging circuit, including：
Battery bag, the battery bag is connected with charging pile；
The entire car controller being connected with the battery bag and the charging pile；
The entire car controller is compared the temperature value of the battery bag with the first temperature threshold and second temperature threshold value
Compared with obtaining comparative result；According to comparative result, heating and the charged state of the battery bag are controlled.
Wherein, the battery bag includes：Electrokinetic cell, is connected to the heating circuit between the electrokinetic cell both positive and negative polarity,
It is connected to the relay between the electrokinetic cell and the heating circuit；
The entire car controller controls the heating when the temperature value of the battery bag is less than first temperature threshold
Loop conducting, the relay disconnect；It is more than first temperature threshold and less than described the in the temperature value of the battery bag
During two temperature thresholds, the heating circuit conducting, relay closure are controlled；It is more than in the temperature value of the battery bag described
During second temperature threshold value, the heating circuit is controlled to disconnect, the relay is closed；
Wherein described first temperature threshold is to allow the lowest temperature angle value of the power battery charging；The second temperature threshold
It is worth the temperature value that heating is terminated for the battery bag.
Wherein, the entire car controller is when the temperature value of the battery bag is less than first temperature threshold, to described
Charging pile sends constant voltage mode charge request, the charging pile is powered with constant voltage mode to the heating circuit；
It is described when the temperature value of the battery bag is more than first temperature threshold and is less than the second temperature threshold value
Entire car controller sends the first constant current mode charge request to the charging pile, the charging pile is added with constant current mode to described
Hot loop and the electrokinetic cell are powered；
When the temperature value of the battery bag is more than the second temperature threshold value, the entire car controller is to the charging pile
The second constant current mode charge request is sent, the charging pile is powered with constant current mode to the electrokinetic cell.
Wherein, the positive pole of the electrokinetic cell is connected with discharge and recharge positive terminal, the negative pole of the electrokinetic cell and discharge and recharge
Negative pole end is connected, and the discharge and recharge positive terminal, the discharge and recharge negative pole end are connected with the charging pile.
Wherein, the relay includes：Be connected between the power battery anode and the heating circuit first after
Electrical equipment and/or the second relay being connected between the power battery cathode and the heating circuit.
Wherein, the heating circuit includes：Heat relay, and the heating element heater connected with the heating relay.
Wherein, the heating charging circuit also includes：
It is arranged at the temperature detector of the detection battery bag temperature in the battery bag.
The embodiment of the present invention also provides a kind of charging electric vehicle method, applied to entire car controller, including：
Obtain the temperature value of battery bag；
The temperature value of the battery bag is compared with the first temperature threshold and second temperature threshold value, knot is compared in acquisition
Really；
According to comparative result, heating and the charged state of the battery bag are controlled.
Wherein, include according to comparative result, the step of the heating and the charged state that control the battery bag：
When the temperature value of the battery bag is less than first temperature threshold, battery described in the vehicle control unit controls
In bag be connected between electrokinetic cell both positive and negative polarity heating circuit conducting, while control be connected to the electrokinetic cell with it is described
Relay between heating circuit disconnects；
It is described when the temperature value of the battery bag is more than first temperature threshold and is less than the second temperature threshold value
Heating circuit described in vehicle control unit controls is turned on, while controlling the relay to close；
When the temperature value of the battery bag is more than the second temperature threshold value, heated described in the vehicle control unit controls
Loop disconnects, while controlling the relay to close；
Wherein, the discharge and recharge positive terminal and discharge and recharge negative pole end of the electrokinetic cell are connected with charging pile；Described first
Temperature threshold is the lowest temperature angle value for the power battery charging for allowing the battery bag；The second temperature threshold value is the battery
Bag terminates the temperature value of heating.
Wherein, methods described also includes：
When the temperature value of the battery bag is less than first temperature threshold, the entire car controller is to the charging pile
Send constant voltage mode charge request so that the charging pile is powered with constant voltage mode to the heating circuit, the heating circuit
In heated condition；
It is described when the temperature value of the battery bag is more than first temperature threshold and is less than the second temperature threshold value
Entire car controller sends the first constant current mode charge request to the charging pile so that the charging pile is with constant current mode to described
Heating circuit and the electrokinetic cell are powered, and the heating circuit is in heated condition, the electrokinetic cell and is in charged state；
When the temperature value of the battery bag is more than the second temperature threshold value, the entire car controller is to the charging pile
Send the second constant current mode charge request so that the charging pile is powered with constant current mode to the electrokinetic cell, the power
Battery is in charged state.
Wherein, before the temperature value of battery bag is obtained, methods described also includes：
After the battery bag and charging pile are set up and be connected, the entire car controller receives the wake-up that the charging pile is sent
Instruction, information exchange is carried out with the charging pile.
Wherein, the temperature value and the first temperature threshold and second temperature threshold value for obtaining the battery bag obtain comparative result it
Afterwards, methods described also includes：
The first voltage value of the battery bag is obtained, the first voltage value charging pile is transferred to, by the charging pile
The first voltage value and second voltage value are compared, the first voltage value and the second voltage value difference it is exhausted
During to being worth in pre-set interval, charging instruction is generated, wherein the second voltage value is the battery that the charging pile is detected
The magnitude of voltage of bag；
The charging instruction of the charging pile feedback is received, heating and the charging shape of the battery bag are controlled according to charging instruction
State.
The embodiment of the present invention also provides a kind of entire car controller, and the entire car controller is connected with battery bag and charging pile,
The entire car controller is used to the temperature value of the battery bag being compared with the first temperature threshold and second temperature threshold value, obtains
To comparative result；According to comparative result, heating and the charged state of the battery bag are controlled.
The embodiment of the present invention also provides a kind of electric automobile, including above-mentioned electric automobile heating charging circuit.
The beneficial effect of technical scheme of the embodiment of the present invention at least includes：
Technical solution of the present invention, by obtaining the temperature of battery bag, by the temperature value of battery bag and the first temperature threshold and
Second temperature threshold value is compared, and obtains comparative result；And according to comparative result, use preset strategy using charging pile for battery
Bag is charged, and controls heating and the charged state of battery bag, it is possible to achieve fill heating soon to battery bag under low-temperature condition, together
When battery bag be in while charging while heating mode under when, the normal charging interval is not interfered with yet, with battery bag temperature
Increase, can effectively shorten the charging interval, it is ensured that the efficiency of charging, be that automobile user is provided convenience.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed for description of the embodiment of the present invention
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 represents electric automobile heating charging circuit schematic diagram one provided in an embodiment of the present invention；
Fig. 2 represents electric automobile heating charging circuit schematic diagram two provided in an embodiment of the present invention；
Fig. 3 represents electric automobile heating charging circuit schematic diagram three provided in an embodiment of the present invention；
Fig. 4 represents charging electric vehicle method schematic diagram provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of electric automobile heating charging circuit, as shown in figure 1, including：Battery bag 1, battery
Bag 1 is connected with charging pile 2；The entire car controller 3 being connected with battery bag 1 and charging pile 2；Entire car controller 3 is by the temperature of battery bag 1
Angle value is compared with the first temperature threshold and second temperature threshold value, obtains comparative result；According to comparative result, battery bag is controlled
1 heating and charged state.
Electric automobile heating charging circuit provided in an embodiment of the present invention includes:Battery bag 1, charging pile 2 and vehicle control
Device 3 processed, wherein battery bag 1 are connected with charging pile 2, and the charging current for receiving the offer of charging pile 2 is heated or charged.Vehicle control
Device 3 processed is connected with battery bag 1 and charging pile 2 respectively, and control charging pile 2 is that battery bag 1 provides electricity.
Wherein, entire car controller 3 obtains the temperature value of battery bag 1, by the temperature value of battery bag 1 and the first temperature threshold and
Second temperature threshold value is compared, and the corresponding charging strategy of present battery bag 1 is determined according to comparative result.It is determined that present battery
Wrap after 1 corresponding charging strategy, entire car controller 3 is that battery bag 1 is charged using charging pile 2, controls adding for battery bag 1
Heat and charged state.
Wherein, can be true according to the temperature value of battery bag 1 and the first temperature threshold and the comparative result of second temperature threshold value
Fixed three kinds of different heating charging strategies.When the temperature value of battery bag 1 is less than the first temperature threshold, charged using the first heating
The heated condition of policy control battery bag 1, the charging current that the now acquisition of battery bag 1 charging pile 2 is provided, is entered using charging current
Row heating.When the temperature value of battery bag 1 is more than the first temperature threshold, less than second temperature threshold value, charged using the second heating
The heating of policy control battery bag 1 and charged state, the charging current that the now acquisition of battery bag 1 charging pile 2 is provided, utilize charging
Electric current charges in heating.When the temperature value of battery bag 1 is more than second temperature threshold value, using the 3rd heating charging strategy control
The charged state of battery bag 1, the charging current that the now acquisition of battery bag 1 charging pile 2 is provided, is charged using charging current.
In embodiments of the present invention, as shown in Fig. 2 battery bag 1 includes：Electrokinetic cell 11, is being connected to electrokinetic cell 11 just
Heating circuit 12 between negative pole, is connected to the relay 13 between electrokinetic cell 11 and heating circuit 12；Entire car controller 3 exists
When the temperature value of battery bag 1 is less than the first temperature threshold, heating circuit 12 is turned on, relay 13 disconnects for control；In battery bag 1
When temperature value is more than the first temperature threshold and is less than second temperature threshold value, heating circuit 12 is turned on, relay 13 is closed for control；
When the temperature value of battery bag 1 is more than second temperature threshold value, heating circuit 12 is disconnected, relay 13 is closed for control；Wherein first temperature
Threshold value is spent to allow the lowest temperature angle value that electrokinetic cell 11 charges；Second temperature threshold value is the temperature value that battery bag 1 terminates heating.
Specifically, battery bag 1 includes electrokinetic cell 11 and heating circuit 12, wherein when heating circuit 12 is turned on, battery
Bag 1 is heated up using heating circuit 12, and relay 13 is provided between heating circuit 12 and electrokinetic cell 11, passes through control relay
13 closure and off-state, can control charging pile 2 to be charged for electrokinetic cell 11.When relay 13 is in closure state
When, charging pile 2 can charge for electrokinetic cell 11, and when relay 13 is off, charging pile 2 can not be electrokinetic cell
11 chargings.When heating circuit 12 is in the conduction state, charging pile 2 is that heating circuit 12 provides electric current, utilizes heating circuit 12
The heat of generation improves the temperature of battery bag 1；When heating circuit 12 is off, charging pile 2 stops being heating circuit
12 power supplies.
Entire car controller 3 needs to obtain the temperature value of battery bag 1, according to the temperature value of battery bag 1 and the first temperature threshold
With the comparative result of second temperature threshold value, it is determined that using which kind of heating charging strategy.Here the first temperature threshold is to allow to move
The lowest temperature angle value that power battery 11 charges；When the temperature value of battery bag 1 is less than the first temperature threshold, electrokinetic cell 11 is not allowed
Charged；Second temperature threshold value is the temperature value that battery bag 1 terminates heating, is more than second temperature in the temperature value of battery bag 1
During threshold value, now the temperature of battery bag 1 reaches requirement, stops heating process.
Wherein when the temperature value of battery bag 1 is less than the first temperature threshold, the control heating circuit 12 of entire car controller 3 is in
Conducting state, while control relay 13 is off, now charging pile 2 is that heating circuit 12 provides electric current, Ke Yishi
The temperature of battery bag 1 is now improved using heating circuit 12, and relay 13 is off, now charging pile 2 can not be
Power battery 11 charges.I.e. when the temperature value of battery bag 1 is less than the first temperature threshold, the control heating circuit 12 of entire car controller 3
Turn on and heated for battery bag 1, control relay 13 disconnects so that charging pile 2 can not charge for electrokinetic cell 11.
When the temperature value of battery bag 1 is more than the first temperature threshold, less than second temperature threshold value, entire car controller 3 is controlled
Heating circuit 12 is in the conduction state, while control relay 13 is closed.Now charging pile 2 is that heating circuit 12 provides electric current,
The temperature that battery bag 1 is improved using heating circuit 12 can be realized, relay 13 is in closure state, and charging pile 2 can be simultaneously
Charged for electrokinetic cell 11.
When the temperature value of battery bag 1 is more than second temperature threshold value, the control heating circuit 12 of entire car controller 3, which is in, to be disconnected
State, while control relay 13 is closed, now because heating circuit 12 is in off state, charging pile 2 can not be to heat back
Road 12 provides electric current, and heating circuit 12 can not carry out heating process, it is impossible to improve the temperature of battery bag 1.And now due to relay
Device 13 is in closure state, and charging pile 2 can be that electrokinetic cell 11 charges by relay 13.
In embodiments of the present invention, entire car controller 3 is when the temperature value of battery bag 1 is less than the first temperature threshold, Xiang Chong
Electric stake 2 sends constant voltage mode charge request, charging pile 2 is powered with constant voltage mode to heating circuit 12；In the temperature of battery bag 1
When value is more than the first temperature threshold and is less than second temperature threshold value, entire car controller 3 sends the first constant current mode to charging pile 2 and filled
Electricity request, makes charging pile 2 be powered with constant current mode to heating circuit 12 and electrokinetic cell 11；It is more than in the temperature value of battery bag 1
During second temperature threshold value, entire car controller 3 sends the second constant current mode charge request to charging pile 2, makes charging pile 2 with constant current mould
Formula is powered to electrokinetic cell 11.
Specifically, when the temperature value of battery bag 1 is less than the first temperature threshold, entire car controller 3 sends perseverance to charging pile 2
Die pressing type charge request, charging pile 2 is after the constant voltage mode charge request of the transmission of entire car controller 3 is received, with constant pressure mould
Formula is that heating circuit 12 is powered, because charging pile 2 is powered with constant voltage mode, and charging current can be carried out according to the loading condition of vehicle
Adjustment, now the corresponding pattern of electric automobile is pure heating mode.
Be more than the first temperature threshold in the temperature value of battery bag 1, less than second temperature threshold value when, entire car controller 3 is to filling
Electric stake 2 sends the first constant current mode charge request, and charging pile 2 is after the first constant current mode charge request is received, with constant current
Pattern is that heating circuit 12 and electrokinetic cell 11 are powered.Now the corresponding pattern of electric automobile is the heating mode in charging.Need
It is noted that, because heating circuit 12 can take charging current, causing to enter electrokinetic cell under heating mode while in charging
Electric current in 11 is reduced, and now entire car controller 3 needs the electric current used according to heating circuit 12, is sent constant current request, is made entrance
Electric current in electrokinetic cell 11 is constant, and the charging interval is not interfered with so.Now corresponding constant current, which is more than, is individually for power
The electric current that battery 11 charges.In this stage, electric automobile can normally use on-board air conditioner, then constant current includes：Power electric
Charging current, the heated current of heating circuit 12 and the corresponding electric current of on-board air conditioner in pond 11.
When the temperature value of battery bag 1 is more than second temperature threshold value, entire car controller 3 sends the second constant current to charging pile 2
Pattern charge request, charging pile 2 is supplied after the second constant current mode charge request is received by electrokinetic cell 11 of constant current mode
Electricity.Now the corresponding pattern of electric automobile is charge mode, and the constant current that charging pile 2 is sent is less than the heating mode in charging
Under corresponding constant current.In this stage, electric automobile can normally use on-board air conditioner, then constant current includes：Power electric
The corresponding electric current of charging current and on-board air conditioner in pond 11.
In embodiments of the present invention, as shown in Figures 2 and 3, the positive pole of electrokinetic cell 11 is connected with discharge and recharge positive terminal 14,
The negative pole of electrokinetic cell 11 is connected with discharge and recharge negative pole end 15, and discharge and recharge positive terminal 14, discharge and recharge negative pole end 15 connect with charging pile 2
Connect.
Wherein, battery bag 1 include discharge and recharge positive terminal 14 and discharge and recharge negative pole end 15, wherein discharge and recharge positive terminal 14, fill
Electric discharge negative pole end 15 is connected with charging pile 2, and charging pile 2 is electrokinetic cell using discharge and recharge positive terminal 14, discharge and recharge negative pole end 15
11 and heating circuit 12 power.Wherein, electrokinetic cell 11 is arranged between discharge and recharge positive terminal 14 and discharge and recharge negative pole end 15, and
The positive pole of electrokinetic cell 11 is connected with discharge and recharge positive terminal 14, and the negative pole of electrokinetic cell 11 is connected with discharge and recharge negative pole end 15.
When charging pile 2 is that electrokinetic cell 11 charges, charging pile 2, discharge and recharge positive terminal 14, electrokinetic cell 11, the shape of discharge and recharge negative pole end 15
Into a charge circuit, charging process is realized.
Wherein, heating circuit 12 is arranged between discharge and recharge positive terminal 14 and discharge and recharge negative pole end 15, is to add in charging pile 2
When hot loop 12 is powered, charging pile 2, discharge and recharge positive terminal 14, heating circuit 12, the connection electricity of the formation of discharge and recharge negative pole end 15 one
Road, realizes power supply process.Heating circuit 12 includes：Heat relay 121, and the heating unit connected with heating relay 121
Part 122.Wherein, when heating relay 121 in closure state, heating circuit 12 is turned on；It is in heating relay 121 disconnected
During open state, the open circuit of heating circuit 12.In embodiments of the present invention, one end of heating relay 121 and discharge and recharge positive terminal 14
Connection, the other end is connected with heating element heater 122, and the other end of heating element heater 122 is connected with discharge and recharge negative pole end 15.Certainly,
Can be discharge and recharge positive terminal 14, heating element heater 122, heating relay 121 and the formation connection circuit of discharge and recharge negative pole end 15.
It is more than the first temperature when the temperature value of battery bag 1 is less than the first temperature threshold, or in the temperature value of battery bag 1
When threshold value is less than second temperature threshold value, the control heating relay 121 of entire car controller 3 is closed, and now heating circuit 12 is turned on,
When heating circuit 12 is turned on, charging pile 2 is that heating circuit 12 is powered, and now the heating element heater 122 in heating circuit 12 is by electricity
Heat is converted into, to lift the temperature of battery bag 1.
When the temperature value of battery bag 1 is more than second temperature threshold value, the control heating relay 121 of entire car controller 3 disconnects,
Now heating circuit 12 is in off state, and when heating circuit 12 is in off state, charging pile 2 can not be heating circuit 12
Charging, heating circuit 12 stops providing heat for battery bag 1.Here the effect of heating element heater 122 is to convert electrical signals to
Temperature signal, and then it is that battery bag 1 provides heat to produce heat.
In embodiments of the present invention, as shown in Figures 2 and 3, relay 13 includes：The positive pole of electrokinetic cell 11 is connected to adding
The first relay 131 between hot loop 12 and/or be connected between the negative pole of electrokinetic cell 11 and heating circuit 12 second after
Electrical equipment 132.
Relay 13 can only include the first relay 131, wherein one end of the first relay 131 and electrokinetic cell 11
Positive pole is connected, and the other end is connected with the first end of heating circuit 12, and first end and the discharge and recharge positive terminal 14 of heating circuit 12 connect
Connect.Relay 13 can also include the second relay 132, wherein one end of the second relay 132 and the negative pole of electrokinetic cell 11
Connection, the other end is connected with the second end of heating circuit 12, and the second end of heating circuit 12 is connected with discharge and recharge negative pole end 15.
Relay 13 can also include the first relay 131 and the second relay 132 simultaneously, wherein the first relay 131
One end is connected with the positive pole of electrokinetic cell 11, and the other end is connected with the first end of heating circuit 12, the first end of heating circuit 12
It is connected with discharge and recharge positive terminal 14；One end of second relay 132 is connected with the negative pole of electrokinetic cell 11, and the other end is with heating back
The second end connection on road 12, the second end of heating circuit 12 is connected with discharge and recharge negative pole end 15.
When battery bag 1 temperature value be less than the first temperature threshold when, the control relay 13 of entire car controller 3 disconnects, when after
When electrical equipment 13 only includes the first relay 131, entire car controller 3 controls the first relay 131 to disconnect, and now charging pile 2 is with moving
The positive pole of power battery 11 forms open circuit, it is impossible to charged for electrokinetic cell 11.When relay 13 only includes the second relay 132,
Entire car controller 3 controls the second relay 132 to disconnect, and now the negative pole of charging pile 2 and electrokinetic cell 11 forms open circuit, it is impossible to be
Electrokinetic cell 11 charges.When relay 13 includes the first relay 131 and the second relay 132 simultaneously, entire car controller 3 can
To control the first relay 131, any one disconnection in the second relay 132, the first relay 131, the can also be controlled
Two relays 132 are disconnected, and open circuit is now formed between charging pile 2 and electrokinetic cell 11, it is impossible to charged for electrokinetic cell 11.
When the temperature value of battery bag 1 is more than the first temperature threshold and is less than second temperature threshold value, or in battery bag 1
When temperature value is more than second temperature threshold value, the control relay 13 of entire car controller 3 is closed.When relay 13 only includes the first relay
During device 131, entire car controller 3 controls the first relay 131 to close, now charging pile 2 and the formation path of electrokinetic cell 11；When after
When electrical equipment 13 only includes the second relay 132, entire car controller 3 controls the second relay 132 to close, and now charging pile 2 is with moving
The formation path of power battery 11；When relay 13 includes the first relay 131 and the second relay 132, entire car controller 3 is controlled
First relay 131 and the second relay 132 are closed, now charging pile 2 and the formation path of electrokinetic cell 11.
In embodiments of the present invention, as shown in Figures 2 and 3, heating charging circuit also includes：Be arranged at it is in battery bag 1,
Detect the temperature detector 4 of the temperature of battery bag 1.Wherein, temperature detector 4 is connected with entire car controller 3, and temperature detector 4 is obtained
The temperature value of battery bag 1 is taken, the temperature value of acquisition is transferred to entire car controller 3, entire car controller 3 is receiving temperature detection
After the temperature value that device 4 is sent, the temperature value of battery bag 1 is compared with the first temperature threshold and second temperature threshold value, root
Charging and the heated condition of battery bag 1 are controlled according to comparative result.
In embodiments of the present invention, as shown in Fig. 2 heating charging circuit also includes：The precharge in parallel with relay 13
Branch road 16, precharge branch 16 includes：Precharge group 161, and the preliminary filling relay 162 connected with precharge group 161.Right
Before electrokinetic cell 11 is charged normal, it is desirable to have the process of a precharge, when electrokinetic cell 11 enters line precharge, in advance
Charging paths 16 are turned on, and now preliminary filling relay 162 is in closure state, and relay 13 is off, and charging pile 2 passes through
The precharge branch 16 of conducting is that electrokinetic cell 11 enters line precharge.When electrokinetic cell 11 is charged normal, precharge branch 16
In off state, now preliminary filling relay 162 is disconnected, and relay 13 is closed, and charging pile 2 is that electrokinetic cell 11 is normally filled
Electricity.Wherein, the process of line precharge is entered to electric automobile, the stage of high pressure in battery bag 1 is appeared in, and entered positioned at battery bag 1
Before row heats or heats or charge normal in charging.
Electric automobile provided in an embodiment of the present invention heats charging circuit, by obtaining the temperature of battery bag, by battery bag
Temperature value be compared with the first temperature threshold and second temperature threshold value, obtain comparative result；And according to comparative result, use
Preset strategy is that battery bag is charged using charging pile, controls heating and the charged state of battery bag, it is possible to achieve low temperature shape
Heating is filled soon to battery bag under state, at the same when battery bag is in charging under heating mode when, do not interfere with normal yet
In the charging interval, it with the increase of battery bag temperature, can effectively shorten the charging interval, it is ensured that the efficiency of charging, be used for electric vehicle
Provide convenience at family.
The embodiment of the present invention also provides a kind of charging electric vehicle method, applied to entire car controller, as shown in figure 4, bag
Include：
Step 401, the temperature value for obtaining battery bag.
Temperature detector is provided with battery bag, temperature detector is connected with entire car controller, utilizes temperature detector
The temperature value of battery bag can be obtained.After the temperature value that entire car controller obtains battery bag, step 402 is performed.
Step 402, the temperature value of battery bag is compared with the first temperature threshold and second temperature threshold value, compared
As a result.
Entire car controller is after the temperature value of battery bag is obtained, by the temperature value of the battery bag of acquisition and the first temperature threshold
Value and second temperature threshold value are compared.Wherein here the first temperature threshold for allow battery bag power battery charging most
Low temperature value；Second temperature threshold value is the temperature value that battery bag terminates heating.When the temperature value of battery bag is less than the first temperature threshold
During value, electrokinetic cell is not allowed to be charged；When the temperature value of battery bag is higher than second temperature threshold value, battery bag stops heating
Process.
Wherein after the temperature value and the first temperature threshold and second temperature threshold value of battery bag are compared, obtained knot
Fruit include 3, one be battery bag temperature value be less than the first temperature threshold, two be battery bag temperature value be more than the first temperature threshold
Value is less than second temperature threshold value；Three be that the temperature value of battery bag is more than second temperature threshold value, is performed according to different comparative result
Different heating charging strategies.
Wherein the first temperature threshold and second temperature threshold value are two critical values, when the temperature value of battery bag is equal to the first temperature
When spending threshold value, it is allowed to the power battery charging of battery bag, when the temperature value of battery bag is equal to second temperature threshold value, battery is controlled
Bag stops heating, and the temperature value of battery bag is divided into three corresponding stages according to the two critical values.
Step 403, according to comparative result, control heating and the charged state of battery bag.
When the temperature value of battery bag is less than the first temperature threshold, power is connected in vehicle control unit controls battery bag
Heating circuit conducting between battery plus-negative plate, while the relay that control is connected between electrokinetic cell and heating circuit breaks
Open；When the temperature value of battery bag is more than the first temperature threshold and is less than second temperature threshold value, vehicle control unit controls are heated back
Road is turned on, while control relay is closed；When the temperature value of battery bag is more than second temperature threshold value, vehicle control unit controls add
Hot loop disconnects, while control relay is closed.
Analysis for two critical value situations is：When the temperature value of battery bag is equal to the first temperature threshold, it is allowed to electricity
Chi Bao power battery charging, now vehicle control unit controls heating circuit is closed, while control relay is closed；Work as battery bag
Temperature value when being equal to second temperature threshold value, it is necessary to control battery bag to stop heating, now vehicle control unit controls heating circuit
Disconnect, while control relay is closed.
Specifically, when the temperature value of battery bag is less than the first temperature threshold, vehicle control unit controls heating circuit is in
Conducting state, while control relay is off, now charging pile provides electric current for heating circuit, it is possible to achieve utilize
Heating circuit improves the temperature of battery bag, and relay is off, and now charging pile can not be power battery charging.
When the temperature value of battery bag is more than the first temperature threshold, less than second temperature threshold value, vehicle control unit controls add
Hot loop is in the conduction state, while control relay is closed.Now charging pile provides electric current for heating circuit, it is possible to achieve profit
The temperature of battery bag is improved with heating circuit, relay is in closure state, and charging pile can be filled for electrokinetic cell simultaneously
Electricity, current corresponding pattern is the heating mode in charging.
When the temperature value of battery bag is more than second temperature threshold value, vehicle control unit controls heating circuit, which is in, disconnects shape
State, while control relay is closed, now because heating circuit is in off state, charging pile can not provide electricity for heating circuit
Stream, heating circuit can not carry out heating process, it is impossible to improve the temperature of battery bag.And now because relay is in closed form
State, charging pile can be power battery charging by relay.Wherein, the discharge and recharge positive terminal and discharge and recharge negative pole of electrokinetic cell
End is connected with charging pile.
It should be noted that when the temperature value of battery bag is less than the first temperature threshold, entire car controller is sent out to charging pile
Send constant voltage mode charge request so that charging pile is powered with constant voltage mode to heating circuit, heating circuit is in heated condition；
When the temperature value of battery bag is more than the first temperature threshold and is less than second temperature threshold value, entire car controller sends first to charging pile
Constant current mode charge request so that charging pile is powered with constant current mode to heating circuit and electrokinetic cell, heating circuit, which is in, to be added
Warm status, electrokinetic cell are in charged state；When the temperature value of battery bag is more than second temperature threshold value, entire car controller is to filling
Electric stake sends the second constant current mode charge request so that charging pile is powered with constant current mode to electrokinetic cell, and electrokinetic cell is in
Charged state.
Specifically, when the temperature value of battery bag is less than the first temperature threshold, entire car controller sends constant pressure to charging pile
Pattern charge request, charging pile is powered by heating circuit of constant voltage mode, the loading condition that now charging current can be according to vehicle
It is adjusted, the corresponding pattern of electric automobile is pure heating mode.
Be more than the first temperature threshold in the temperature value of battery bag, less than second temperature threshold value when, entire car controller is to charging
Stake sends the first constant current mode charge request, and charging pile is that heating circuit and electrokinetic cell are powered using constant current mode.It is now electronic
The corresponding pattern of automobile is the heating mode in charging, and corresponding constant current is more than the electric current for being individually for power battery charging.
When the temperature value of battery bag is more than second temperature threshold value, entire car controller sends the second constant current mode to charging pile
Charge request, charging pile is powered by electrokinetic cell of constant current mode.Now the corresponding pattern of electric automobile is charge mode, charging
The constant current that stake is sent is less than corresponding constant current under the heating mode in charging.It should be noted that the first temperature threshold
Value and second temperature threshold value belong to the transition value of battery bag temperature, the charging electricity of electrokinetic cell corresponding for the two transition values
Stream situation does not do detailed explanation herein.
In embodiments of the present invention, before the temperature value of battery bag is obtained, in addition to：
After battery bag and charging pile are set up and be connected, entire car controller receives the wake-up instruction that charging pile is sent, with charging
Stake carries out information exchange.
Wherein, battery bag includes electrokinetic cell, and the wherein positive pole of electrokinetic cell is connected with discharge and recharge positive terminal, electrokinetic cell
Negative pole be connected with discharge and recharge negative pole end, discharge and recharge positive terminal, discharge and recharge negative pole end are connected with charging pile.In battery bag by filling
Electric discharge positive terminal, discharge and recharge negative pole end are set up with charging pile and are connected, and entire car controller is set up with charging pile after being connected, vehicle
Controller receives the wake-up instruction that charging pile is sent, and carries out information exchange with charging pile according to waking up to instruct, is shaken hands into charging
Stage.
Then entire car controller obtains the first voltage value of battery bag, first voltage value is transferred into charging pile, by charging
First voltage value and second voltage value are compared by stake, are being preset in the absolute value of first voltage value and the difference of second voltage value
When in interval, charging instruction is generated, wherein second voltage value is the magnitude of voltage for the battery bag that charging pile is detected；Receive charging pile anti-
The charging instruction of feedback, heating and the charged state of battery bag are controlled according to charging instruction.
Specific entire car controller sends first voltage value to charging after the first voltage value of battery bag is obtained
First voltage value is compared, second voltage here by stake, charging pile after first voltage value is obtained with second voltage value
It is worth the voltage that obtained battery bag is detected for charging pile.First voltage value and the difference of second voltage value absolute value in preset areas
When interior, now charging pile confirms that vehicle is in normal condition, generates charging instruction, charging instruction is sent to full-vehicle control
Device, entire car controller controls heating and the charged state of battery bag after charging instruction is received.When first voltage value and the
When the absolute value of the difference of two magnitudes of voltage is not in pre-set interval, charging pile confirms that vehicle is in malfunction, and carries out in failure
Report.
Wherein, entering charging handshake phase and judging the temperature value and the first temperature threshold and second temperature of battery bag
After the relation of threshold value, high pressure in entire car controller guiding battery bag, subsequently into the parameter configuration stage.Above-mentioned full-vehicle control
Device obtains the first voltage value of electrokinetic cell, and first voltage value is sent to charging pile, by charging pile according to first voltage value and
The process that second voltage value is judged, belongs to Parameter Configuration process.
Wherein it should be noted that in the parameter configuration stage, charging pile starts to detect the total voltage of battery bag, in total voltage
Meet after requiring, charging pile sends charging instruction, entire car controller is after charging instruction is detected, into charging normal shape
State, either enters and heated condition or enters heated condition in charging.
The embodiment of the present invention also provides a kind of entire car controller, and entire car controller is connected with battery bag and electric stake, vehicle control
Device processed is used to the temperature value of battery bag being compared with the first temperature threshold and second temperature threshold value, obtains comparative result；Root
According to comparative result, heating and the charged state of battery bag are controlled.
The embodiment of the present invention also provides a kind of electric automobile, including above-mentioned electric automobile heating charging circuit.Electronic vapour
Car heats the temperature that charging circuit obtains battery bag by entire car controller, by the temperature value of battery bag and the first temperature threshold and
Second temperature threshold value is compared, and obtains comparative result；And according to comparative result, use preset strategy using charging pile for battery
Bag is charged, and controls heating and the charged state of battery bag, it is possible to achieve fill heating soon to battery bag under low-temperature condition, together
When battery bag be in while charging while heating mode under when, the normal charging interval is not interfered with yet, with battery bag temperature
Increase, can effectively shorten the charging interval, it is ensured that the efficiency of charging, be that automobile user is provided convenience.
Above-described is the preferred embodiment of the present invention, it should be pointed out that come for the ordinary person of the art
Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (14)
1. a kind of electric automobile heats charging circuit, it is characterised in that including：
Battery bag, the battery bag is connected with charging pile；
The entire car controller being connected with the battery bag and the charging pile；
The temperature value of the battery bag is compared by the entire car controller with the first temperature threshold and second temperature threshold value, is obtained
To comparative result；According to comparative result, heating and the charged state of the battery bag are controlled.
2. electric automobile according to claim 1 heats charging circuit, it is characterised in that
The battery bag includes：Electrokinetic cell, is connected to the heating circuit between the electrokinetic cell both positive and negative polarity, is connected to described
Relay between electrokinetic cell and the heating circuit；
The entire car controller controls the heating circuit when the temperature value of the battery bag is less than first temperature threshold
Conducting, the relay disconnect；It is more than first temperature threshold and less than the described second temperature in the temperature value of the battery bag
When spending threshold value, the heating circuit conducting, relay closure are controlled；It is more than described second in the temperature value of the battery bag
During temperature threshold, the heating circuit is controlled to disconnect, the relay is closed；
Wherein described first temperature threshold is to allow the lowest temperature angle value of the power battery charging；The second temperature threshold value is
The battery bag terminates the temperature value of heating.
3. electric automobile according to claim 2 heats charging circuit, it is characterised in that
The entire car controller is sent when the temperature value of the battery bag is less than first temperature threshold to the charging pile
Constant voltage mode charge request, makes the charging pile be powered with constant voltage mode to the heating circuit；
When the temperature value of the battery bag is more than first temperature threshold and is less than the second temperature threshold value, the vehicle
Controller sends the first constant current mode charge request to the charging pile, the charging pile is heated back with constant current mode to described
Road and the electrokinetic cell are powered；
When the temperature value of the battery bag is more than the second temperature threshold value, the entire car controller is sent to the charging pile
Second constant current mode charge request, makes the charging pile be powered with constant current mode to the electrokinetic cell.
4. electric automobile according to claim 2 heats charging circuit, it is characterised in that the positive pole of the electrokinetic cell with
Discharge and recharge positive terminal is connected, and the negative pole of the electrokinetic cell is connected with discharge and recharge negative pole end, the discharge and recharge positive terminal, described is filled
Electric discharge negative pole end is connected with the charging pile.
5. electric automobile according to claim 2 heats charging circuit, it is characterised in that the relay includes：Connection
The first relay between the power battery anode and the heating circuit and/or be connected to the power battery cathode with
The second relay between the heating circuit.
6. electric automobile according to claim 2 heats charging circuit, it is characterised in that the heating circuit includes：Plus
Electrothermal relay, and the heating element heater connected with the heating relay.
7. electric automobile according to claim 2 heats charging circuit, it is characterised in that the heating charging circuit is also wrapped
Include：
It is arranged at the temperature detector of the detection battery bag temperature in the battery bag.
8. a kind of charging electric vehicle method, applied to entire car controller, it is characterised in that including：
Obtain the temperature value of battery bag；
The temperature value of the battery bag is compared with the first temperature threshold and second temperature threshold value, comparative result is obtained；
According to comparative result, heating and the charged state of the battery bag are controlled.
9. method according to claim 8, it is characterised in that according to comparative result, control the battery bag heating and
The step of charged state, includes：
When the temperature value of the battery bag is less than first temperature threshold, described in the vehicle control unit controls in battery bag
Be connected between electrokinetic cell both positive and negative polarity heating circuit conducting, while control be connected to the electrokinetic cell and the heating
Relay between loop disconnects；
When the temperature value of the battery bag is more than first temperature threshold and is less than the second temperature threshold value, the vehicle
Controller controls the heating circuit conducting, while controlling the relay to close；
When the temperature value of the battery bag is more than the second temperature threshold value, heating circuit described in the vehicle control unit controls
Disconnect, while controlling the relay to close；
Wherein, the discharge and recharge positive terminal and discharge and recharge negative pole end of the electrokinetic cell are connected with charging pile；First temperature
Threshold value is the lowest temperature angle value for the power battery charging for allowing the battery bag；The second temperature threshold value is that the battery bag is whole
The temperature value only heated.
10. method according to claim 9, it is characterised in that methods described also includes：
When the temperature value of the battery bag is less than first temperature threshold, the entire car controller is sent to the charging pile
Constant voltage mode charge request so that the charging pile is powered with constant voltage mode to the heating circuit, the heating circuit is in
Heated condition；
When the temperature value of the battery bag is more than first temperature threshold and is less than the second temperature threshold value, the vehicle
Controller sends the first constant current mode charge request to the charging pile so that the charging pile is with constant current mode to the heating
Loop and the electrokinetic cell are powered, and the heating circuit is in heated condition, the electrokinetic cell and is in charged state；
When the temperature value of the battery bag is more than the second temperature threshold value, the entire car controller is sent to the charging pile
Second constant current mode charge request so that the charging pile is powered with constant current mode to the electrokinetic cell, the electrokinetic cell
In charged state.
11. method according to claim 8, it is characterised in that before the temperature value of battery bag is obtained, methods described is also
Including：
After the battery bag and charging pile are set up and be connected, the wake-up that the entire car controller receives the charging pile transmission refers to
Order, information exchange is carried out with the charging pile.
12. method according to claim 8, it is characterised in that obtaining the temperature value and the first temperature of the battery bag
Threshold value and second temperature threshold value are obtained after comparative result, and methods described also includes：
The first voltage value of the battery bag is obtained, the first voltage value is transferred to charging pile, by the charging pile by institute
State first voltage value and second voltage value is compared, in the absolute value of the first voltage value and the difference of the second voltage value
When in pre-set interval, charging instruction is generated, wherein the second voltage value is the battery bag that the charging pile is detected
Magnitude of voltage；
The charging instruction of the charging pile feedback is received, heating and the charged state of the battery bag are controlled according to charging instruction.
13. a kind of entire car controller, it is characterised in that the entire car controller is connected with battery bag and charging pile, the vehicle
Controller is used to the temperature value of the battery bag being compared with the first temperature threshold and second temperature threshold value, obtains comparing knot
Really；According to comparative result, heating and the charged state of the battery bag are controlled.
14. a kind of electric automobile, it is characterised in that heat charging including the electric automobile as described in any one of claim 1 to 7
Circuit.
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| CN201710292831.4A CN106965700A (en) | 2017-04-28 | 2017-04-28 | A kind of electric automobile heating charging circuit and charging method |
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|---|---|---|---|
| CN201710292831.4A CN106965700A (en) | 2017-04-28 | 2017-04-28 | A kind of electric automobile heating charging circuit and charging method |
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Application publication date: 20170721 |