CN109747483A - A kind of power battery High-Power PTC heating system and its control method - Google Patents
A kind of power battery High-Power PTC heating system and its control method Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 86
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- 102100036894 Protein patched homolog 2 Human genes 0.000 claims abstract description 22
- 101710161395 Protein patched homolog 2 Proteins 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 description 4
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
Abstract
The invention discloses a kind of power battery High-Power PTC heating systems and its control method, including charger module, battery management system module, battery modules module and heating module, the charger module is connected by CAN line one with the battery management system module, the battery management system module is connected by CAN line two with the battery modules module, and the battery modules module is connected by CAN line three with the heating module.The utility model has the advantages that under trickle charge mode, only use a part of PTC general power, Vehicular charger can be guaranteed to the normal heating and charging of PTC1, simultaneously under fast charge mode, non-on-board charger can be used normally to PTC1 and PTC2 while heating, low-temperature heat time and charging time are not influenced, and under trickle charge mode, PTC is heated without using the energy of itself of power battery.
Description
Technical field
The present invention relates to field of automobile control, it particularly relates to a kind of power battery High-Power PTC heating system and
Its control method.
Background technique
Chemical reactivity reduces lithium-ion-power cell at low ambient temperatures, while lithium ion mobility is slack-off.If low temperature
Under charge by force, battery cathode will form " analysis lithium ", cause short-circuit bulge even explosion on fire.Therefore lithium-ion-power cell exists
Charging has to first heat power battery under low temperature, can charge after temperature of powered cell rising.Mainstream at present
Power battery heater part is mainly PTC (Positive Temperature Coefficient, positive temperature coefficient, similarly hereinafter) member
Part.
A kind of power battery heating is proposed according to a kind of power battery heating system (CN201620838382.X) of patent
System is made of low-tension supply, battery management system, heating power supply, Battery case, battery pack, switch K, heating plate etc..PTC
Heating plate is uniformly distributed in battery pack surrounding, be easy to cause heating temperature uneven, causes the power battery temperature difference big.PTC heating
Energy from heating power supply, the heating power supply of electric car mostlys come from Vehicular charger (trickle charge mode) and non-at present
Vehicular charger (fast charge mode).For Vehicular charger, the charger power of mainstream is 3.3kW, corresponding national standard GB/T18487
Defined 2 charge power of trickle charge mode, main usage scenario are average family trickle charge.
As the requirement of low temperature fast charge heating time is shorter and shorter, PTC power is increasing, has been over 3.3kW, mode
In the case of 2 trickle charges, Vehicular charger can not provide so big power, cause not being available trickle charge heating under low-temperature condition.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes a kind of power battery High-Power PTC heating system and its control
Method processed, to overcome above-mentioned technical problem present in existing the relevant technologies.
For this purpose, the specific technical solution that the present invention uses is as follows:
According to an aspect of the invention, there is provided a kind of power battery High-Power PTC heating system, including charger
Module, battery management system module, battery modules module and heating module, the charger module by CAN line one with it is described
Battery management system module is connected, and the battery management system module is connected by CAN line two with the battery modules module
It connects, the battery modules module is connected by CAN line three with the heating module；
Wherein, the charger module includes Vehicular charger and non-on-board charger, the battery management system module
Including battery pack management of charging and discharging module, SOC estimation block, SOP estimation block, thermal management module and BMS, the battery modules
Module includes passing through the mould group formed in series and parallel, cooling fin one, cooling fin two, high voltage connector by multiple power battery monomers
K1, high voltage connector K2, fuse F1 and fuse F2, the heating module include PTC1, PTC2.
Further, the high-voltage positive electrode of the Vehicular charger connects the high voltage connector K1 and the high voltage connector
One end of the high-voltage contact of K2, the high voltage connector K1 high-voltage contact other end connect the fuse F1, the fuse
The F1 other end connects the anode of the PTC1；The high voltage connector K2 high-voltage contact other end connects the fuse F2, institute
State the anode that the fuse F2 other end connects the PTC2, the cathode of the PTC1 and the PTC2 are all connected to described vehicle-mounted fill
The high voltage negative of motor.
Further, the coil-end of the high voltage connector K1 and the high voltage connector K2 are separately connected the BMS's
Different control ports.
Further, the cooling fin one is located at the top of the mould group, the cooling fin two, positioned at the bottom of the mould group
End.
Further, the power of the Vehicular charger is 3.3kW, provides heating electricity to be described for the PTC1 or PTC2
Source.
According to another aspect of the present invention, a kind of power battery High-Power PTC method for heating and controlling is provided, for moving
Power battery High-Power PTC heating system, comprising the following steps:
Under fast charge mode；
The BMS described first confirms presently described non-on-board charger connection by detection fast charge connection signal；
Then whether the BMS judges whether to need to start heating less than 0 DEG C according to minimum temperature of power battery；
If minimum temperature of power battery >=0 DEG C, charged according to national regulations fast charge process；
If minimum temperature of power battery, less than 0 DEG C, the BMS controls the high voltage connector K1 and the high voltage connector
K2 is attracted respectively；
Start the PTC1 and PTC2 heating, into heating procedure；
In the PTC heating process, the BMS real-time monitoring minimum temperature of power battery；
When minimum temperature >=5 DEG C, the BMS controls the high voltage connector K1 and high voltage connector K2 shutdown；
Then heating terminates, and is attracted power battery anode, cathode high voltage connector, starts normal fast charge process；
Under trickle charge mode:
The BMS is currently at trickle charge mode by detection trickle charge connection signal, confirmation；
Whether the BMS judges whether to need to start heating less than 0 DEG C according to minimum temperature of power battery；
If minimum temperature of power battery >=0 DEG C, the BMS control is attracted power battery anode, cathode high voltage connector, opens
Begin normal trickle charge process；
If minimum temperature of power battery, less than 0 DEG C, the BMS only controls the high voltage connector K1 and is attracted, described in starting
PTC1 heating, into heating procedure；
In the PTC heating process, the BMS real-time monitoring minimum temperature of power battery；
When minimum temperature >=5 DEG C, the BMS controls the high voltage connector K1 shutdown；
Heating terminates, and is then attracted power battery anode, cathode high voltage connector, starts normal trickle charge process.
Further, it is described rush state slowly under, because of Vehicular charger power limit, do not start PTC2 heating.
The invention has the benefit that only using a part of PTC general power, it is ensured that vehicle-mounted under trickle charge mode
Non-on-board charger can be used normally to PTC1 to the normal heating and charging of PTC1, while under fast charge mode in charger
Heated simultaneously with PTC2, do not influence low-temperature heat time and charging time, under trickle charge mode, without using power battery itself
Energy PTC is heated, not will cause power battery overdischarge, charging work temperature is depended primarily on down to -40 DEG C
The working limit temperature of PTC, mainstream High-Power PTC needs the energy pair using power battery itself under trickle charge mode at present
PTC is heated, and charging work temperature range is generally at -20 DEG C.Because most of when temperature of powered cell is lower than -20 DEG C
Power battery does not allow to discharge, and is not available power battery itself electric energy and heats to PTC.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 be a kind of power battery High-Power PTC heating system according to an embodiment of the present invention structural schematic diagram it
One；
Fig. 2 be a kind of power battery High-Power PTC heating system according to an embodiment of the present invention structural schematic diagram it
Two；
Fig. 3 is a kind of flow chart of power battery High-Power PTC method for heating and controlling according to an embodiment of the present invention.
In figure:
1, charger module；2, battery management system module；3, battery modules module；4, heating module；5, CAN line one；
6, CAN line two；7, CAN line three；8, battery pack management of charging and discharging module；9, SOC estimation block；10, SOP estimation block；11, hot
Management module；12, mould group；13, cooling fin one；14, cooling fin two.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing, these attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment, cooperation ginseng
Examine these contents, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention, in figure
Component be not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
According to an embodiment of the invention, providing a kind of power battery High-Power PTC heating system and its control method.
Now in conjunction with the drawings and specific embodiments, the present invention is further described, as shown in Figure 1-3, implement according to the present invention
The power battery High-Power PTC heating system of example, including charger module 1, battery management system module 2, battery modules mould
Block 3 and heating module 4, the charger module 1 is connected by CAN line 1 with the battery management system module 2, described
Battery management system module 2 is connected by CAN line 26 with the battery modules module 3, and the battery modules module 3 passes through
CAN line 37 is connected with the heating module 4；
Wherein, the charger module 1 includes Vehicular charger and non-on-board charger, the battery management system module
2 include battery pack management of charging and discharging module 8, SOC estimation block 9, SOP estimation block 10, thermal management module 11 and BMS, described
Battery modules module 3 includes passing through the mould group 12 formed in series and parallel, cooling fin 1, cooling fin two by multiple power battery monomers
14, high voltage connector K1, high voltage connector K2, fuse F1 and fuse F2, the heating module 4 include PTC1, PTC2.
By means of above scheme, under trickle charge mode, a part of PTC general power is only used, it is ensured that vehicle-mounted charge
Machine is to the normal heating and charging of PTC1, while under fast charge mode, can be used normally non-on-board charger to PTC1 and
PTC2 is heated simultaneously, does not influence low-temperature heat time and charging time, under trickle charge mode, without using power battery itself
Energy heats PTC, not will cause power battery overdischarge, and charging work temperature depends primarily on PTC down to -40 DEG C
Working limit temperature, mainstream High-Power PTC is needed using the energy of power battery itself under trickle charge mode to PTC at present
It is heated, charging work temperature range is generally at -20 DEG C.Since when temperature of powered cell is lower than -20 DEG C, most of power
Battery does not allow to discharge, and is not available power battery itself electric energy and heats to PTC.
In addition, in one embodiment, connecting the high voltage connector K1 for the high-voltage positive electrode of above-mentioned Vehicular charger
With one end of the high-voltage contact of the high voltage connector K2, the high voltage connector K1 high-voltage contact other end connects the fusing
Device F1, the fuse F1 other end connect the anode of the PTC1；The high voltage connector K2 high-voltage contact other end connection
The fuse F2, the fuse F2 other end connect the anode of the PTC2, and the cathode of the PTC1 and the PTC2 are equal
It is connected to the high voltage negative of the Vehicular charger.
With the aid of the technical scheme, fuse F1, fuse F2 major function are to provide overcurrent protection function, prevent from adding
Occur uncontrollable overcurrent risk in thermal process, Vehicular charger is predominantly located inside vehicle forward engine room, by trickle charge harness with
Power battery connection；Charger module 1 if non-on-board charger, then be located at outside vehicle, vehicle by fast charge harness with it is non-
Vehicular charger connection.
In addition, in one embodiment, for the coil-end point of above-mentioned high voltage connector K1 and the high voltage connector K2
The different control ports of the BMS are not connected.
In addition, in one embodiment, the top of the mould group 12, the cooling fin are located at for above-mentioned cooling fin 1
2 14, the bottom end positioned at the mould group 12 improves heat dissipation effect by the setting of cooling fin 1 and cooling fin 2 14.
In addition, in one embodiment, it is PTC1 or institute for described in that the power for above-mentioned Vehicular charger, which is 3.3kW,
It states PTC2 and heating power supply is provided.Normally start PTC heating, power≤2kW of PTC1 under trickle charge mode.
According to another aspect of the present invention, a kind of power battery High-Power PTC method for heating and controlling is provided, for moving
Power battery High-Power PTC heating system, comprising the following steps:
Under fast charge mode；
Step S101, the BMS described first confirm that presently described non-on-board charger connects by detection fast charge connection signal
It connects；
Step S103, then whether the BMS judges whether to need to start to add according to minimum temperature of power battery less than 0 DEG C
Heat；
Step S105 charges if minimum temperature of power battery >=0 DEG C according to national regulations fast charge process；
Step S107, if minimum temperature of power battery, less than 0 DEG C, the BMS controls the high voltage connector K1 and described
High voltage connector K2 is attracted respectively；
Step S109 starts the PTC1 and PTC2 heating, into heating procedure；
Step S111, in the PTC heating process, the BMS real-time monitoring minimum temperature of power battery；
Step S113, when minimum temperature >=5 DEG C, the BMS controls the high voltage connector K1 and high pressure contact
Device K2 shutdown；
Step S115, then heating terminates, and is attracted power battery anode, cathode high voltage connector, starts normal fast charge stream
Journey；
Under trickle charge mode:
Step S117, the BMS are currently at trickle charge mode by detection trickle charge connection signal, confirmation；
Whether step S119, the BMS judge whether to need to start heating less than 0 DEG C according to minimum temperature of power battery；
Step S121, if minimum temperature of power battery >=0 DEG C, the BMS control is attracted power battery anode, cathode high pressure
Contactor starts normal trickle charge process；
Step S123, if minimum temperature of power battery, less than 0 DEG C, the BMS only controls the high voltage connector K1 and is attracted,
Start the PTC1 heating, into heating procedure；
Step S125, in the PTC heating process, the BMS real-time monitoring minimum temperature of power battery；
Step S127, when minimum temperature >=5 DEG C, the BMS controls the high voltage connector K1 shutdown；
Step S129, heating terminate, and are then attracted power battery anode, cathode high voltage connector, start normal trickle charge stream
Journey.
In addition, in one embodiment, being rushed under state slowly for above-mentioned, because of Vehicular charger power limit, not starting institute
State PTC2 heating.
In conclusion under trickle charge mode, only using the one of PTC general power by means of above-mentioned technical proposal of the invention
Part, it is ensured that Vehicular charger can be used normally non-to the normal heating and charging of PTC1, while under fast charge mode
Vehicular charger heats PTC1 and PTC2 simultaneously, does not influence low-temperature heat time and charging time, under trickle charge mode, does not make
PTC is heated with the energy of itself of power battery, not will cause power battery overdischarge, charging work temperature down to-
40 DEG C, the working limit temperature of PTC is depended primarily on, mainstream High-Power PTC needs under trickle charge mode using power electric at present
The energy in pond itself heats PTC, and charging work temperature range is generally at -20 DEG C.Because temperature of powered cell lower than-
At 20 DEG C, most of power battery does not allow to discharge, and is not available power battery itself electric energy and heats to PTC.
In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " fixation ",
Terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside a element, unless otherwise restricted clearly, for the common of this field
For technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of power battery High-Power PTC heating system, which is characterized in that including charger module (1), battery management system
Unite module (2), battery modules module (3) and heating module (4), the charger module (1) pass through CAN line one (5) with it is described
Battery management system module (2) is connected, and the battery management system module (2) passes through CAN line two (6) and the battery modules
Module (3) is connected, and the battery modules module (3) is connected by CAN line three (7) with the heating module (4)；
Wherein, the charger module (1) includes Vehicular charger and non-on-board charger, the battery management system module
It (2) include battery pack management of charging and discharging module (8), SOC estimation block (9), SOP estimation block (10), thermal management module (11)
And BMS, the battery modules module (3) include passing through the mould group (12) formed in series and parallel, heat dissipation by multiple power battery monomers
Piece one (13), cooling fin two (14), high voltage connector K1, high voltage connector K2, fuse F1 and fuse F2, the heated mould
Block (4) includes PTC1, PTC2.
2. a kind of power battery High-Power PTC heating system according to claim 1, which is characterized in that described vehicle-mounted
The high-voltage positive electrode of charger connects one end of the high-voltage contact of the high voltage connector K1 and the high voltage connector K2, the height
It crimps the tentaculum K1 high-voltage contact other end and connects the fuse F1, the fuse F1 other end is connecting the PTC1 just
Pole；The high voltage connector K2 high-voltage contact other end connects the fuse F2, described in the fuse F2 other end connection
The cathode of the anode of PTC2, the PTC1 and the PTC2 are all connected to the high voltage negative of the Vehicular charger.
3. a kind of power battery High-Power PTC heating system according to claim 2, which is characterized in that the high pressure
The coil-end of contactor K1 and the high voltage connector K2 are separately connected the different control ports of the BMS.
4. a kind of power battery High-Power PTC heating system according to claim 3, which is characterized in that the heat dissipation
Piece one (13) is located at the top of the mould group (12), and the cooling fin two (14) is located at the bottom end of the mould group (12).
5. a kind of power battery High-Power PTC heating system according to claim 4, which is characterized in that described vehicle-mounted
The power of charger is 3.3kW, provides heating power supply to be described for PTC1 or the PTC2.
6. a kind of power battery High-Power PTC method for heating and controlling, which is characterized in that for the power described in claim 5
Battery High-Power PTC heating system, comprising the following steps:
Under fast charge mode；
The BMS described first confirms presently described non-on-board charger connection by detection fast charge connection signal；
Then whether the BMS judges whether to need to start heating less than 0 DEG C according to minimum temperature of power battery；
If minimum temperature of power battery >=0 DEG C, charged according to national regulations fast charge process；
If minimum temperature of power battery, less than 0 DEG C, the BMS controls the high voltage connector K1 and high voltage connector K2 points described
It is not attracted；
Start the PTC1 and PTC2 heating, into heating procedure；
In the PTC heating process, the BMS real-time monitoring minimum temperature of power battery；
When minimum temperature >=5 DEG C, the BMS controls the high voltage connector K1 and high voltage connector K2 shutdown；
Then heating terminates, and is attracted power battery anode, cathode high voltage connector, starts normal fast charge process；
Under trickle charge mode:
The BMS is currently at trickle charge mode by detection trickle charge connection signal, confirmation；
Whether the BMS judges whether to need to start heating less than 0 DEG C according to minimum temperature of power battery；
If minimum temperature of power battery >=0 DEG C, the BMS control is attracted power battery anode, cathode high voltage connector, starts just
Normal trickle charge process；
If minimum temperature of power battery, less than 0 DEG C, the BMS only controls the high voltage connector K1 and is attracted, start the PTC1
Heating, into heating procedure；
In the PTC heating process, the BMS real-time monitoring minimum temperature of power battery；
When minimum temperature >=5 DEG C, the BMS controls the high voltage connector K1 shutdown；
Heating terminates, and is then attracted power battery anode, cathode high voltage connector, starts normal trickle charge process.
7. a kind of power battery High-Power PTC method for heating and controlling according to claim 6, which is characterized in that in institute
It states and rushes under state slowly, because of Vehicular charger power limit, do not start the PTC2 heating.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584976A (en) * | 2020-05-21 | 2020-08-25 | 安徽江淮汽车集团股份有限公司 | Heating control system and method for battery pack of electric vehicle |
| CN113479098A (en) * | 2021-07-07 | 2021-10-08 | 南京金龙客车制造有限公司 | Thermal management battery system and control method thereof |
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| CN103457318A (en) * | 2013-08-20 | 2013-12-18 | 重庆长安汽车股份有限公司 | Power cell charging and heating system and method of pure electric vehicle |
| CN205265299U (en) * | 2015-12-31 | 2016-05-25 | 惠州市亿能电子有限公司 | Novel control circuit charges |
| US20180083323A1 (en) * | 2016-09-20 | 2018-03-22 | Nio Nextev Limited | Bus-bar assembly, power battery over-load protection system and method, and power battery assembly |
| CN206171216U (en) * | 2016-10-10 | 2017-05-17 | 合肥创宇新能源科技有限公司 | Pure electric vehicles alternating current -direct current charges and heats high -pressure control circuit |
| US20180178615A1 (en) * | 2016-12-27 | 2018-06-28 | Bordrin Motor Corporation | Intelligent multi-loop thermal management system for an electric vehicle |
| CN106785235A (en) * | 2017-02-10 | 2017-05-31 | 山东谦恒电子科技有限公司 | Battery pack heating means and system |
| CN207134449U (en) * | 2017-03-28 | 2018-03-23 | 浙江普朗特电动汽车有限公司 | A kind of on-board closed-loop control battery low temperature charger heating system based on temperature |
| CN207353430U (en) * | 2017-09-30 | 2018-05-11 | 奇瑞汽车股份有限公司 | A kind of automobile power cell heating structure |
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| CN111584976A (en) * | 2020-05-21 | 2020-08-25 | 安徽江淮汽车集团股份有限公司 | Heating control system and method for battery pack of electric vehicle |
| CN113479098A (en) * | 2021-07-07 | 2021-10-08 | 南京金龙客车制造有限公司 | Thermal management battery system and control method thereof |
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