CN106252788A - Low-temperature heating method and device for lithium battery - Google Patents
Low-temperature heating method and device for lithium battery Download PDFInfo
- Publication number
- CN106252788A CN106252788A CN201610720320.3A CN201610720320A CN106252788A CN 106252788 A CN106252788 A CN 106252788A CN 201610720320 A CN201610720320 A CN 201610720320A CN 106252788 A CN106252788 A CN 106252788A
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- Prior art keywords
- battery
- temperature
- bms
- heating
- charging
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 4
- 238000012790 confirmation Methods 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 abstract 1
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a low-temperature heating method and a device thereof for batteries of electric vehicles, wherein when a charging plug is connected with a charger for charging, a temperature sensor transmits the measured internal temperature of a battery box to a BMS (battery management system), and the lowest temperature t of the current battery is calculated by adopting a bubbling sorting algorithm; when t is less than 5 ℃, the BMS outputs a high level of 5V to control the charging relay and the heating relay to be closed, and controls the charger to output a current of 6.5A to supply power to the heating film for heating through the CAN bus, and when t is more than or equal to 5 ℃, the BMS controls the charger to output a current of 20A through the CAN bus to charge and heat the battery; when the electricity t is more than or equal to 10 ℃, the BMS outputs a low level of 0V, so that the heating relay is switched off and the normal charging mode of the power supply battery is entered. The invention shortens the charging time of the power supply battery, prolongs the service life of the lithium battery, improves the endurance mileage of the electric automobile and reduces the running cost of the electric automobile.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of lithium battery low-temperature heating method and dress thereof
Put.
Background technology
The energy and environment have become as the problem that Present Global is paid close attention to the most, and electric automobile starts the most gradually
Popularization and application.Dynamic lithium battery on electric automobile is by being contained in casing after several battery modules connection in series-parallel and electrokinetic cell
Management system (BMS) is constituted.The performance of lithium battery is with temperature has greatest relation, and it is the killer of lithium battery that low temperature is known as, meeting
Have a strong impact on the performance of lithium battery, and and lithium battery performance directly related be electric automobile most critical data continuation of the journey in
Journey, some Large Electric automobiles are arranged above with multiple battery case and provide power source, and by a power battery management system (BMS)
They are managed collectively.It addition, another large focal spot that the charging interval of lithium battery is also people to be paid close attention to, and and tradition
Oil car, gas vehicle are compared, the charging interval also always inferior position that electric automobile is long.At set of cells at low ambient temperatures
Time, this inferior position is exaggerated again.Therefore, low temperature has had a strong impact on the charging interval of lithium battery, and the long charging interval can be tight
Heavily hinder development and the popularization of electric automobile.It addition, low temperature also have impact on the life-span of lithium battery, so low temperature is electric automobile
One big formidable opponent, especially uses for electric automobile in north cold area and promotes, and the Low Temperature Problems of battery is especially prominent.
To sum up, at present in the urgent need to providing a kind of efficient, stable, safe and practical battery low-temperature heat control method, come
Solve the problems referred to above.
Summary of the invention
It is an object of the invention to: a kind of lithium battery low-temperature heating method and device thereof are provided, be used for improving lithium-ion electric
Pond group performance at low ambient temperatures.
For solving the problems referred to above, the technical solution used in the present invention is:
A kind of low-temperature heating method of batteries of electric automobile, it comprises the following steps:
(1), when charging plug is connected charging with charger, BMS obtains the confirmation signal that charges, the battery that temperature sensor will record
Case internal temperature is transferred to BMS, uses Bubble Sort Algorithm to calculate the minimum temperature t of present battery；
(2) when minimum temperature t < 5 DEG C of battery, the high level of BMS output 5V controls charge relay and adds thermorelay and close
Closing, and powered to heating film by the electric current of CAN control charger output 6.5A, heating film begins to warm up, in battery case
Battery temperature raises；
(3) when minimum temperature t >=5 DEG C of battery, BMS controls charger output 20A electric current by CAN, to battery limit
The heating of charging limit；
(4) when minimum temperature t >=10 DEG C of battery, the low level of BMS output 0V, make to add thermorelay and disconnect, heating film is tied
Shu Jiare；Now, BMS controls charger output 100A electric current by CAN and is charged, and enters normally filling of supplying cell
Power mode.
Scheme further, after heating film heats 1 hour, if the maximum temperature variation range delta of temperature sensor detection
Tmax≤2 DEG C or Δ Tmax >=15 DEG C, then BMS closes and adds thermorelay and charge relay.
Scheme further, after heating film heats 4 hours, if t < 5 DEG C, then BMS closes and adds thermorelay and charging relay
Device.
Scheme further, after charging terminates, in electric vehicle driving process, when t < 5 DEG C, the high electricity of BMS output 5V
Flat control adds thermorelay Guan Bi, and supplying cell supplies electricity to heating film and carries out heating work, when being heated to t >=5 DEG C or in heating
During maximum temperature variation range delta Tmax >=15 DEG C, then BMS close add thermorelay.
Another goal of the invention of the present invention is to provide the device of the low-temperature heating method realizing above-mentioned batteries of electric automobile,
Including the supplying cell being in series by several battery cases for powering and power battery management system, described supplying cell
Two ends are serially connected with charging plug；It is characterized in that: in described battery case, be equipped with heating film and temperature sensor, described heating film
After series connection in parallel with supplying cell, then be serially connected in the two ends of described charging plug；Connect between described charging plug and supplying cell
Being connected to charge relay, connecting between described charge relay and heating film has and adds thermorelay；The letter of described temperature sensor
Number outfan is connected with described power battery management system, the signal output part of described power battery management system respectively with charging
Relay, add thermorelay coil connect.
Scheme, is provided with the current sense for detecting charging current between described charging connector and supplying cell further
Device, the signal output part of described current sensor is connected with described power battery management system.
Scheme, is serially connected with heating electric fuse between described heating film and charging plug further.
Scheme further, described power battery management system is connected with charger by CAN.
The present invention is to gather the temperature of battery in each battery case by temperature sensor and be transferred to electrokinetic cell management
System (BMS), is then calculated minimum temperature by BMS by Bubble Sort Algorithm and judges, when minimum temperature t < 5 DEG C,
Just Guan Bi adds thermorelay and opens heating function and heat to battery, and it is defeated to detect charger in real time by battery sensor
The electric current gone out may conform to heating, the requirement of charging.
Medium power battery management system (BMS) of the present invention is known, and the present invention is not related to its internal structure and work is former
Reason.It addition, Bubble Sort Algorithm is also known, it it is the better simply sort algorithm of a kind of computer science.
Battery is the most first heated by the present invention so that it is minimum temperature is not less than 5 DEG C, thus shortens it and fill
The electricity time；Electric automobile is in the process of moving simultaneously, heats the battery of low temperature, extends the service life of lithium battery, carries
The course continuation mileage of high electric automobile, reduces the operating cost of electric automobile.
The present invention, by heating the set of cells under low temperature environment, makes battery be in the temperature range of better performances
In.Making it in the charging stage, off-board charger is by powering to heating film so that it is produces heat and improves the temperature of set of cells
Degree, along with the rising of temperature uses staged charging, can shorten charging interval during low temperature；In travel phase, pass through battery
The electric discharge organizing self is powered to heating film so that it is produces heat and improves the temperature of set of cells, improve the performance of set of cells, increases
Course continuation mileage.So the present invention had both ensured the safety that supplying cell works, it is made again to be operated in good state.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is the principle schematic of the present invention.
Concrete control method
Below in conjunction with instantiation, the present invention is described in further detail, but the control mode of the present invention is not limited to this.
Embodiment 1
With heating film power as 6.5A/537.6V, illustrate as a example by Li-ion batteries piles 537.6V/182AH:
A kind of low-temperature heating method of batteries of electric automobile, it comprises the following steps:
(1), when charging plug is connected charging with charger, BMS obtains the confirmation signal that charges, the battery that temperature sensor will record
Case internal temperature is transferred to BMS, uses Bubble Sort Algorithm to calculate the minimum temperature t of present battery；
(2) when minimum temperature t < 5 DEG C of battery, the high level of BMS output 5V controls charge relay and adds thermorelay and close
Closing, and powered to heating film by the electric current of CAN control charger output 6.5A, heating film begins to warm up, in battery case
Battery temperature raises；
(3) when minimum temperature t >=5 DEG C of battery, BMS controls charger output 20A electric current by CAN, to battery limit
The heating of charging limit；
(4) after heating film heats 1 hour, if maximum temperature variation range delta Tmax≤2 DEG C of temperature sensor detection or Δ
Tmax>=15 DEG C, then BMS closes and adds after thermorelay and charge relay or heating film heat 4 hours, if t<5 DEG C, then BMS
Closedown adds thermorelay and charge relay；
(5) when minimum temperature t >=10 DEG C of battery, the low level of BMS output 0V, make to add thermorelay and disconnect, heating film is tied
Shu Jiare；Now, BMS controls charger output 100A electric current by CAN and is charged, and enters normally filling of supplying cell
Power mode.
Embodiment 2:
After charging terminates, in electric vehicle driving process, when t < 5 DEG C, the high level of BMS output 5V controls to add thermorelay
Guan Bi, supplying cell supplies electricity to heating film and carries out heating work, when being heated to t >=5 DEG C or maximum temperature change in heating process
Change range delta Tmax >=15 DEG C, then BMS closes and adds thermorelay.
Embodiment 3:
As it is shown in figure 1, the low-temperature heating device of a kind of batteries of electric automobile, including the power supply electricity being in series by five battery cases
Pond S and power battery management system BMS, described supplying cell S two ends are serially connected with charging plug A；Described battery case 1, battery case
2, heating film and temperature sensor it are equipped with in battery case 3, battery case 4, battery case 5, with power supply electricity after the series connection of described heating film
Pond S is in parallel, then is serially connected in the two ends of described charging plug A；Connecting between described charging plug A and supplying cell S has charging to continue
Electrical equipment J1, connects between described charge relay J1 and heating film and has heating relay J 2；The signal of described temperature sensor is defeated
Go out end be connected with described power battery management system BMS, the signal output part of described power battery management system BMS respectively with fill
Electrical relay J1, the coil of heating relay J 2 connect.
Scheme, is provided with the current sense for detecting charging current between described charging connector A and supplying cell S further
Device P, the signal output part of described current sensor P is connected with described power battery management system BMS.
Scheme further, is serially connected with heating electric fuse F between described heating film and charging plug A.
Scheme further, described power battery management system BMS is connected with charger by CAN.
Above example is only the control method of part of the present invention.It should be noted that, the control method of the present invention is not by above-mentioned
The restriction of embodiment, the numerical value such as above-mentioned temperature, heat time heating time, temperature range changes according to different batteries.Other are any
Without departing from the change made under spirit and the principle of the present invention, modify, substitute, combine, simplification etc., be accordingly to be regarded as the control of equivalence
Method processed, within being included in protection scope of the present invention.
Claims (8)
1. the low-temperature heating method of a batteries of electric automobile, it is characterised in that: comprise the following steps:
(1), when charging plug is connected charging with charger, BMS obtains the confirmation signal that charges, the battery that temperature sensor will record
Case internal temperature is transferred to BMS, uses Bubble Sort Algorithm to calculate the minimum temperature t of present battery；
(2) when minimum temperature t < 5 DEG C of battery, the high level of BMS output 5V controls charge relay and adds thermorelay and close
Closing, and powered to heating film by the electric current of CAN control charger output 6.5A, heating film begins to warm up, in battery case
Battery temperature raises；
(3) when minimum temperature t >=5 DEG C of battery, BMS controls charger output 20A electric current by CAN, to battery limit
The heating of charging limit；
(4) when minimum temperature t >=10 DEG C of battery, the low level of BMS output 0V, make to add thermorelay and disconnect, heating film is tied
Shu Jiare；Now, BMS controls charger output 100A electric current by CAN and is charged, and enters normally filling of supplying cell
Power mode.
The low-temperature heating method of a kind of batteries of electric automobile the most according to claim 1, it is characterised in that: heating film heats
After 1 hour, if maximum temperature variation range delta Tmax≤2 DEG C of temperature sensor detection or Δ Tmax >=15 DEG C, then BMS closes
Close and add thermorelay and charge relay.
The low-temperature heating method of a kind of batteries of electric automobile the most according to claim 1, it is characterised in that: heating film heats
After 4 hours, if t < 5 DEG C, then BMS closes and adds thermorelay and charge relay.
The low-temperature heating method of a kind of batteries of electric automobile the most according to claim 1, it is characterised in that: charging terminates
After, in electric vehicle driving process, when t < 5 DEG C, the high level of BMS output 5V controls to add thermorelay Guan Bi, power supply electricity
Pond supplies electricity to heating film and carries out heating work, when be heated to t >=5 DEG C or in heating process maximum temperature variation range delta Tmax
>=15 DEG C, then BMS closes and adds thermorelay.
5. realize a device for the low-temperature heating method of batteries of electric automobile as claimed in claim 1, including for powering
The supplying cell being in series by several battery cases and power battery management system, described supplying cell two ends are serially connected with to be filled
Plug；It is characterized in that: be equipped with heating film and temperature sensor in described battery case, with power supply after the series connection of described heating film
Cell parallel, then it is serially connected in the two ends of described charging plug；Connect between described charging plug and supplying cell and have charging relay
Device, connects between described charge relay and heating film and has and add thermorelay；The signal output part of described temperature sensor and institute
State power battery management system connect, the signal output part of described power battery management system respectively with charge relay, heating
The coil of relay connects.
Control device the most according to claim 5, it is characterised in that: it is provided with use between described charging connector and supplying cell
In the current sensor of detection charging current, the signal output part of described current sensor is with described power battery management system even
Connect.
Device the most according to claim 5, it is characterised in that: it is serially connected with heating between described heating film and charging plug and protects
Danger silk.
Device the most according to claim 5, it is characterised in that: described power battery management system passes through CAN and fills
Motor connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720320.3A CN106252788A (en) | 2016-08-24 | 2016-08-24 | Low-temperature heating method and device for lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720320.3A CN106252788A (en) | 2016-08-24 | 2016-08-24 | Low-temperature heating method and device for lithium battery |
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Family
ID=57596137
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| CN201610720320.3A Pending CN106252788A (en) | 2016-08-24 | 2016-08-24 | Low-temperature heating method and device for lithium battery |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825968A (en) * | 2017-09-18 | 2018-03-23 | 南京金龙新能源汽车研究院有限公司 | A kind of control system of electric motor car heating battery |
| CN107834122A (en) * | 2017-11-03 | 2018-03-23 | 北京理工大学 | A kind of device and method of automatic heating battery |
| CN107953795A (en) * | 2017-12-05 | 2018-04-24 | 上海航天电源技术有限责任公司 | A kind of power battery pack low-temperature charging method |
| CN108365279A (en) * | 2018-02-02 | 2018-08-03 | 合肥国轩高科动力能源有限公司 | Adjusting device and adjusting method for automatically adjusting distributed current based on PTC |
| CN108933465A (en) * | 2018-08-31 | 2018-12-04 | 浙江飞碟汽车制造有限公司 | A kind of charging unit and its application method based on temperature and electric current double-direction control |
| CN109616718A (en) * | 2018-11-26 | 2019-04-12 | 北汽福田汽车股份有限公司 | Electric car, electrokinetic cell system and its method for heating and controlling |
| CN109935943A (en) * | 2019-03-25 | 2019-06-25 | 湖南科霸汽车动力电池有限责任公司 | Lithium battery pack heater circuit and heating means |
| CN110182099A (en) * | 2019-06-10 | 2019-08-30 | 天津恒天新能源汽车研究院有限公司 | A kind of automobile-used power battery charging control system of electronic logistics and its control method |
| CN110364785A (en) * | 2019-06-12 | 2019-10-22 | 爱驰汽车有限公司 | Temperature regulating device and electric vehicle for electric vehicle |
| CN110444825A (en) * | 2019-06-28 | 2019-11-12 | 恒大新能源科技集团有限公司 | A kind of battery heating device and its charge control method, battery pack and vehicle |
| CN110808434A (en) * | 2019-09-25 | 2020-02-18 | 浙江合众新能源汽车有限公司 | Heating control method and device for power battery during low-temperature charging of automobile |
| CN111169287A (en) * | 2019-09-30 | 2020-05-19 | 双登集团股份有限公司 | Special vehicle lithium battery electrical control system and working mode thereof |
| CN111208164A (en) * | 2020-01-18 | 2020-05-29 | 桑顿新能源科技有限公司 | Heating film heating efficiency detection method and related equipment |
| US10804711B2 (en) | 2017-01-09 | 2020-10-13 | Milwaukee Electric Tool Corporation | Battery pack configured to discharge to inhibit failure |
| CN111934038A (en) * | 2020-07-29 | 2020-11-13 | 厦门金龙旅行车有限公司 | Battery heating device and heating method |
| CN112002839A (en) * | 2019-05-27 | 2020-11-27 | 广州雷利诺车业有限公司 | Electric motorcycle and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10804711B2 (en) | 2017-01-09 | 2020-10-13 | Milwaukee Electric Tool Corporation | Battery pack configured to discharge to inhibit failure |
| US10985576B2 (en) | 2017-01-09 | 2021-04-20 | Milwaukee Electric Tool Corporation | Battery pack |
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| CN107825968A (en) * | 2017-09-18 | 2018-03-23 | 南京金龙新能源汽车研究院有限公司 | A kind of control system of electric motor car heating battery |
| CN107834122A (en) * | 2017-11-03 | 2018-03-23 | 北京理工大学 | A kind of device and method of automatic heating battery |
| CN107953795A (en) * | 2017-12-05 | 2018-04-24 | 上海航天电源技术有限责任公司 | A kind of power battery pack low-temperature charging method |
| CN108365279A (en) * | 2018-02-02 | 2018-08-03 | 合肥国轩高科动力能源有限公司 | Adjusting device and adjusting method for automatically adjusting distributed current based on PTC |
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| CN108933465A (en) * | 2018-08-31 | 2018-12-04 | 浙江飞碟汽车制造有限公司 | A kind of charging unit and its application method based on temperature and electric current double-direction control |
| CN109616718A (en) * | 2018-11-26 | 2019-04-12 | 北汽福田汽车股份有限公司 | Electric car, electrokinetic cell system and its method for heating and controlling |
| CN109935943A (en) * | 2019-03-25 | 2019-06-25 | 湖南科霸汽车动力电池有限责任公司 | Lithium battery pack heater circuit and heating means |
| CN112002839A (en) * | 2019-05-27 | 2020-11-27 | 广州雷利诺车业有限公司 | Electric motorcycle and control method thereof |
| CN110182099A (en) * | 2019-06-10 | 2019-08-30 | 天津恒天新能源汽车研究院有限公司 | A kind of automobile-used power battery charging control system of electronic logistics and its control method |
| CN110364785A (en) * | 2019-06-12 | 2019-10-22 | 爱驰汽车有限公司 | Temperature regulating device and electric vehicle for electric vehicle |
| CN110444825A (en) * | 2019-06-28 | 2019-11-12 | 恒大新能源科技集团有限公司 | A kind of battery heating device and its charge control method, battery pack and vehicle |
| CN110808434A (en) * | 2019-09-25 | 2020-02-18 | 浙江合众新能源汽车有限公司 | Heating control method and device for power battery during low-temperature charging of automobile |
| CN110808434B (en) * | 2019-09-25 | 2022-04-08 | 浙江合众新能源汽车有限公司 | Heating control method and device for power battery during low-temperature charging of automobile |
| CN111169287A (en) * | 2019-09-30 | 2020-05-19 | 双登集团股份有限公司 | Special vehicle lithium battery electrical control system and working mode thereof |
| CN111169287B (en) * | 2019-09-30 | 2024-07-16 | 双登集团股份有限公司 | Special vehicle lithium battery electric control system and working mode thereof |
| CN111208164A (en) * | 2020-01-18 | 2020-05-29 | 桑顿新能源科技有限公司 | Heating film heating efficiency detection method and related equipment |
| CN111934038A (en) * | 2020-07-29 | 2020-11-13 | 厦门金龙旅行车有限公司 | Battery heating device and heating method |
| CN111934038B (en) * | 2020-07-29 | 2021-08-24 | 厦门金龙旅行车有限公司 | Battery heating device and heating method |
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