CN114335816A - Self-heating battery thermal management control device, battery assembly, electric vehicle and method - Google Patents
Self-heating battery thermal management control device, battery assembly, electric vehicle and method Download PDFInfo
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- CN114335816A CN114335816A CN202111444109.0A CN202111444109A CN114335816A CN 114335816 A CN114335816 A CN 114335816A CN 202111444109 A CN202111444109 A CN 202111444109A CN 114335816 A CN114335816 A CN 114335816A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 167
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 63
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
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- 230000004048 modification Effects 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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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
- H01M10/613—Cooling or keeping cold
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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
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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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
Abstract
The invention discloses a self-heating battery thermal management control device, a battery assembly, an electric vehicle and a method. The device comprises a battery module, a cooling system, a self-heating system and a heat conducting structure; the cooling system is arranged at the lower end of the battery module; the self-heating system is fixed at the lower end of the cooling system and is connected with the anode and the cathode of the battery module to form a loop; a heat conduction structure is arranged between the battery module and the cooling system. The IGBT switch of the switch anode and cathode inner part controls the high-frequency on-off with the self-heating high-voltage wire harness through the battery BMS: after the high-frequency on-off is formed, the high frequency of an electric field in the self-heating high-voltage wire bundle changes, the spiral line around the heater generates induction current inside the heater due to the electromagnetic induction phenomenon, a large amount of heat is generated, the heating function of the heating fixing plate can be further realized, and the heating fixing plate can realize the heating of cooling liquid in a cooling system. The invention can realize the functions of high-efficiency cooling of the power battery and automatic heating of the battery pack, and improves the overall heat management efficiency of the power battery.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a self-heating battery thermal management control device, a battery assembly, an electric vehicle and a method.
Background
The importance of a thermal management system of the power battery as a key core part of a new energy automobile is self-evident. At present, the mainstream battery thermal management system is complex in structure and cannot be integrated with a lower box body.
In order to solve the problems, the application with publication number CN112820979A discloses a power battery thermal management system and a power battery thermal management control method, wherein the system comprises an expansion tank, an electric water pump, a power battery, a cooling module, a first electromagnetic valve, a second electromagnetic valve, a heat exchanger integrated with an expansion valve, a third electromagnetic valve, an air conditioner compressor, a condensation heater assembly, a fuel heater assembly and a fourth electromagnetic valve. The control method, using the system, includes the steps of: acquiring the temperature Tb of cooling liquid at an inlet of a power battery; and if the temperature Tb of the cooling liquid at the inlet of the power battery is greater than the lower limit temperature Tb0 at the inlet of the power battery, selectively opening the first circulation passage or the second circulation passage. The heat management system ensures that the battery works at a proper temperature, and the cooling module, the heat exchanger integrated with the expansion valve and the fuel heater assembly can be flexibly arranged according to conditions, so that the whole vehicle is flexibly arranged without being limited by the space of the whole vehicle, and the space utilization rate is high. But this application can not realize power battery's high-efficient cooling and battery package self-heating function.
Application publication No. CN113386629A discloses a battery thermal management control method, apparatus, medium, and device. The method comprises the following steps: predicting the temperature of the battery in a target travel according to a road condition of the target travel, or predicting the temperature of the battery in the target charging process according to the magnitude of charging current in the target charging process; controlling heating or cooling of the battery according to the predicted temperature. The change of the battery temperature in the process is predicted according to the use condition of the battery in the future charging/discharging process, and the heat management is carried out according to the predicted temperature, so that the battery can be in a better working state, the redundancy of the system is effectively reduced, the unnecessary energy waste is reduced, and the heat management power consumption of the whole vehicle is reduced. But this application can not realize power battery's high-efficient cooling and battery package self-heating function.
Application publication No. CN113422130A discloses a battery thermal management control method, a battery management controller, a system and a vehicle. The method comprises the following steps: the method comprises the steps of obtaining the maximum heating temperature value of a current module, comparing the maximum heating temperature value with a preset temperature threshold value, closing a heating loop of the current module if the maximum heating temperature value of the current module is larger than or equal to the preset temperature threshold value, selecting the module with the shortest closing time from the current modules for closing the heating loop as a target module, obtaining the temperature value of the target module and the maximum temperature values of other modules which are not closed, comparing the temperature value of the target module with the maximum temperature values of other modules which are not closed, and closing the heating loops of other modules which are not closed if the maximum temperature values of other modules which are not closed are larger than or equal to the temperature value of the target module. The battery management controller closes the heating loop of the module according to the comparison result of the module temperature value, reduces the temperature difference of the module, and improves the service life of the power battery system and the endurance mileage of the whole vehicle. But this application can not realize power battery's high-efficient cooling and battery package self-heating function.
Disclosure of Invention
The invention provides a self-heating battery heat management control device, a battery assembly, an electric vehicle and a method, which can realize the functions of efficient cooling of a power battery and automatic heating of a battery pack and improve the overall heat management efficiency of the power battery.
The technical scheme of the invention is described as follows by combining the attached drawings:
on one hand, the self-heating battery thermal management control device comprises a battery module 1, a cooling system 2, a self-heating system 3 and a heat conducting structure 4; the cooling system 2 is arranged at the lower end of the battery module 1; the self-heating system 3 is fixed at the lower end of the cooling system 2 and is connected with the positive electrode and the negative electrode of the battery module 1 to form a loop; and a heat conduction structure 4 is arranged between the battery module 1 and the cooling system 2.
The positive and negative output positions of the battery module 1 are provided with a switch positive and negative electrode 101; the switch positive and negative electrodes 101 are connected with the battery BMS.
The self-heating system 3 comprises a heater 301, a self-heating high-voltage wire harness 302 and a heating fixing plate 303; the heater 301 is arranged at the bottommost part of the self-heating system 3; the heating fixing plate 303 is arranged at the bottom of the cooling system 2 and is in direct contact with the cooling system 2; the self-heating high-voltage wire harness 302 is wound around the heater 301 to form a spiral line, one end of the spiral line is close to the heating fixing plate 303, and the other end of the spiral line is far away from the heating fixing plate 303 and is positioned at the bottom of the heater 301; and the two ends of the spiral line parallel loop are respectively connected with the anode 101 and the cathode 101 of the switch to form a power supply loop.
The switch positive and negative electrodes 101 internally comprise IGBT switches; and the IGBT switch is connected with the battery BMS.
The heat conducting structure 4 is a heat conducting glue or a heat conducting pad.
In a second aspect, a battery assembly is provided that includes a battery thermal management device.
In a third aspect, an electric vehicle is provided that includes a battery assembly.
In a fourth aspect, a control method for a self-heating battery thermal management control device is provided, which is implemented by a self-heating battery thermal management control device, and includes the following steps:
step one, the battery BMS receives a heat management request signal and acquires the temperature of the battery module 1;
judging by the battery BMS according to the acquired temperature, and judging the heat management requirement;
step three, the battery BMS issues an instruction according to the heat management requirement judged in the step two and executes the instruction; the instructions fall into three thermal management modes: cooling mode, normal heating mode, self-heating mode; in the heating mode, if the battery assembly needs to be rapidly heated in a short time, selecting a self-heating mode, otherwise, selecting a normal heating mode;
step four, performing signal feedback on the thermal management mode to see whether the index requirement is met, and if the index requirement is not met, repeating the step three; otherwise, control of thermal management is exited.
The cooling mode is executed in the third step, the following conditions are satisfied:
Tmax≥Tlkwhen the battery BMS sends a cooling instruction to a VCU of the whole vehicle, a heat management water pump and a cooling loop of the whole vehicle are started to circulate, and cooling liquid in the cooling system 2 is started to circulate to cool the battery module 1;
wherein, TmaxThe current highest temperature; t islkTemperature for cooling mode on;
the following conditions need to be satisfied when the normal heating mode is executed:
Tmin≤Tjkwhen the battery BMS sends a heating instruction to a VCU of the whole vehicle, a heat management water pump and a heating loop of the whole vehicle are started to circulate, and cooling liquid in the cooling system 2 is started to circulate to carry out common heating on the battery module 1;
wherein, Tjm-Tjk≥6℃；TminIs the current minimum temperature; t isjkA normal heating mode start temperature; t isjmA normal heating mode target temperature;
the following condition needs to be satisfied when the self-heating mode is executed:
Tmin≤Tzjkwhen the battery BMS is used, the positive electrode 101 and the negative electrode 101 of the switch are controlled to realize high-frequency on-off, and the battery module 1 is self-heated; wherein T iszjm-Tzjk≥5℃；TminIs the current minimum temperature; t iszjkA self-heating mode on temperature; t iszjmIs the self-heating mode target temperature;
in addition, the heating temperature difference and the heating power of the on self-heating mode are obtained by the following formula:
Tc＝Tzjm-Tmin；
wherein theta is a safety coefficient, is obtained according to test calibration, and has a value range
TcIs the heating temperature difference; t isQIs the heating power; alpha is a structural characteristic coefficient, and the value range of alpha is more than or equal to 1.12 and less than or equal to 1.21; beta is a heat loss compensation coefficient, and the value range of beta is more than or equal to 1.05 and less than or equal to 1.13; q is the weight of the battery module; ccThe specific heat capacity of the battery module.
The index requirements in the fourth step are as follows:
cooling mode: t ismax≤TlmThe standard is reached; wherein, TmaxThe current highest temperature; t islmA cooling mode target temperature;
normal heating mode: t ismin≥TjmThe standard is reached; wherein, TminIs the current minimum temperature; t isjmA normal heating mode target temperature;
self-heating mode: t ismin≥TzjmThe standard is reached; wherein, TminIs the current minimum temperature; t iszjmIs the self-heating mode target temperature.
The invention has the beneficial effects that:
1) the self-heating battery heat management control device is simple in structure, the power battery can realize self-heating, and the overall heat management efficiency of the power battery is improved;
2) the self-heating battery thermal management control method can effectively control the heating function and the cooling function of the battery thermal management system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a self-heating battery thermal management control device according to the present invention;
FIG. 2 is a schematic top view of a self-heating battery thermal management control apparatus according to the present invention;
FIG. 3 is a schematic diagram of the self-heating system of the present invention;
fig. 4 is a schematic structural view of another aspect of the self-heating battery thermal management control device according to the present invention;
fig. 5 is a flowchart of a thermal management control method for a self-heating battery according to the present invention.
In the figure:
1. a battery module;
101. switching on and off the anode and the cathode;
2. a cooling system;
3. a self-heating system;
301. a heater; 302. self-heating the high-voltage wire harness; 303. heating the fixed plate;
4. a thermally conductive structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
Referring to fig. 1, 2 and 4, a self-heating battery thermal management control device includes a battery module 1, a cooling system 2, a self-heating system 3 and a heat conducting structure 4.
The battery module 1 is placed inside a battery pack. The positive and negative output positions of the battery module 1 are provided with a switch positive and negative electrode 101; the switch positive and negative electrodes 101 internally comprise IGBT switches; and the IGBT switch is connected with the battery BMS. The battery BMS is mainly responsible for signal acquisition of the battery module 1 and controls the battery module 1.
The cooling system 2 is provided at the lower end of the battery module 1.
The self-heating system 3 is fixed at the lower end of the cooling system 2 and is connected with the positive electrode and the negative electrode of the battery module 1 to form a loop;
referring to fig. 2 and 3, the self-heating system 3 includes a heater 301, a self-heating high-voltage wire harness 302, and a heating fixing plate 303; the heater 301 is arranged at the bottommost part of the self-heating system 3; the heating fixing plate 303 is arranged at the bottom of the cooling system 2 and is in direct contact with the cooling system 2; the self-heating high-voltage wire harness 302 is wound around the heater 301 to form a spiral line parallel connection, specifically, one ends close to the heating fixing plate 303 are connected together, and one ends far away from the heating fixing plate 303 are connected together.
Specifically, two ends of a loop formed by parallel connection of spiral lines around a heater 301 below a single battery module 1 are respectively connected with a positive switch electrode 101 and a negative switch electrode 101 on the battery module 1 to form a power supply loop;
the IGBT switch in the switch anode 101 and the switch cathode can be controlled by the battery BMS and can be switched on and off with the self-heating high-voltage wire harness 302 at a high frequency: after the high-frequency on-off is formed, the electric field in the self-heating high-voltage wire harness 302 changes in high frequency, the helix around the heater 301 generates induction current to generate a large amount of heat due to the electromagnetic induction phenomenon, so that the heating function of the heating fixing plate 303 can be realized, and the heating fixing plate 303 can heat the cooling liquid in the cooling system 2.
The heater 301 may be made of a material including, but not limited to, an aluminum alloy, an iron alloy, a titanium alloy, a copper alloy, and other metal alloys that can rapidly generate a large amount of heat in the eddy current of the electric field varying at a high frequency.
The self-heating high-voltage wire harness 302 is made of a material including, but not limited to, a metal material such as an aluminum alloy, a titanium alloy, or a copper alloy.
The heating fixing plate 303 is made of a non-metallic material with high thermal conductivity and high insulation, such as, but not limited to, silicone, polyurethane, etc.
A heat conduction structure 4 is arranged between the battery module 1 and the cooling system 2, and mainly plays a role in heat transfer and insulation of the battery module 1.
The pattern of the heat conducting structure 4 includes, but is not limited to, a heat conducting glue, a heat conducting pad, and other structures capable of conducting heat rapidly.
Example two
The embodiment provides a battery assembly, which comprises the self-heating battery thermal management control device in the first embodiment. The battery assembly adopts the self-heating battery thermal management control device in the first embodiment, and the high-efficiency cooling and battery pack automatic heating functions of the battery assembly are realized through the self-heating system, so that the overall thermal management efficiency of the battery assembly is improved.
EXAMPLE III
The embodiment provides an electric vehicle including the battery assembly of the second embodiment. The battery assembly adopts the self-heating battery thermal management control device and the self-heating system in the first embodiment, so that the high-efficiency cooling and battery pack automatic heating functions of the battery assembly are realized, the overall thermal management efficiency of the battery assembly is improved, the safety of an electric vehicle can be effectively guaranteed, and the research and development cost is reduced.
Example four
Referring to fig. 5, a control method of a self-heating battery thermal management control device is implemented by a self-heating battery thermal management control device, and includes the following steps:
step one, the battery BMS receives a heat management request signal and acquires the temperature of the battery module 1;
judging by the battery BMS according to the acquired temperature, and judging the heat management requirement;
step three, the battery BMS issues an instruction according to the heat management requirement judged in the step two and executes the instruction; the instructions fall into three thermal management modes: cooling mode, normal heating mode, self-heating mode; in the heating mode, if the battery assembly needs to be rapidly heated in a short time, selecting a self-heating mode, otherwise, selecting a normal heating mode;
the following conditions are satisfied when the cooling mode is executed:
Tmax≥Tlkwhen the battery BMS sends a cooling instruction to a VCU of the whole vehicle, a heat management water pump and a cooling loop of the whole vehicle are started to circulate, and cooling liquid in the cooling system 2 is started to circulate to cool the battery module 1;
wherein, TmaxThe current highest temperature; t islkTemperature for cooling mode on;
the following conditions need to be satisfied when the normal heating mode is executed:
Tmin≤Tjkwhen the battery BMS sends a heating instruction to a VCU of the whole vehicle, a heat management water pump and a heating loop of the whole vehicle are started to circulate, and cooling liquid in the cooling system 2 is started to circulate to carry out common heating on the battery module 1;
wherein, Tjm-Tjk≥6℃；TminIs the current minimum temperature; t isjkA normal heating mode start temperature; t isjmA normal heating mode target temperature;
the following condition needs to be satisfied when the self-heating mode is executed:
Tmin≤Tzjkwhen the battery BMS is used, the positive electrode 101 and the negative electrode 101 of the switch are controlled to realize high-frequency on-off, and the battery module 1 is self-heated; wherein T iszjm-Tzjk≥5℃；TminIs the current minimum temperature; t iszjkA self-heating mode on temperature; t iszjmIs the self-heating mode target temperature;
in addition, the heating temperature difference and the heating power of the on self-heating mode are obtained by the following formula:
Tc＝Tzjm-Tmin；
wherein theta is a safety coefficient, is obtained according to test calibration, and has a value range
TcIs the heating temperature difference; t isQIs the heating power; alpha is a structural characteristic coefficient, and the value range of alpha is more than or equal to 1.12 and less than or equal to 1.21; beta is a heat loss compensation coefficient, and the value range of beta is more than or equal to 1.05 and less than or equal to 1.13; q is the weight of the battery module; ccThe specific heat capacity of the battery module.
And preliminarily judging the required power according to the heat generation requirement, and further optimizing the energy utilization rate. And the rapid heating is realized.
Step four, performing signal feedback on the thermal management mode to see whether the index requirement is met, and if the index requirement is not met, repeating the step three; otherwise, control of thermal management is exited.
The index requirements are specifically as follows:
cooling mode: t ismax≤TlmThe standard is reached; wherein, TmaxThe current highest temperature; t islmA cooling mode target temperature;
normal heating mode: t ismin≥TjmThe standard is reached; wherein, TminIs the current minimum temperature; t isjmA normal heating mode target temperature;
self-heating mode: t ismin≥TzjmThe standard is reached; wherein, TminIs the current minimum temperature; t iszjmIs the self-heating mode target temperature.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the scope of the present invention is not limited to the specific details of the above embodiments, and any person skilled in the art can substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention, and these simple modifications belong to the scope of the present invention.
Claims (10)
1. A self-heating battery thermal management control device is characterized by comprising a battery module (1), a cooling system (2), a self-heating system (3) and a heat conduction structure (4); the cooling system (2) is arranged at the lower end of the battery module (1); the self-heating system (3) is fixed at the lower end of the cooling system (2) and is connected with the positive electrode and the negative electrode of the battery module (1) to form a loop; and a heat conduction structure (4) is arranged between the battery module (1) and the cooling system (2).
2. The self-heating battery thermal management control device according to claim 1, wherein a switch anode and cathode (101) is arranged at the anode and cathode output positions of the battery module (1); the positive and negative poles (101) of the switch are connected with the battery BMS.
3. A self-heating battery thermal management control device according to claim 2, characterized in that the self-heating system (3) comprises a heater (301), a self-heating high voltage wire harness (302) and a heating fixing plate (303); the heater (301) is arranged at the bottommost part of the self-heating system (3); the heating fixing plate (303) is arranged at the bottom of the cooling system (2) and is in direct contact with the cooling system (2); the self-heating high-voltage wire harness (302) is wound around the heater (301) to form a spiral line, one end of the spiral line is close to the heating fixing plate (303), and the other end of the spiral line is far away from the heating fixing plate (303) and is positioned at the bottom of the heater (301); and two ends of the spiral line parallel loop are respectively connected with the anode and the cathode (101) of the switch to form a power supply loop.
4. The self-heating battery thermal management control device according to claim 2, wherein the switching positive and negative electrodes (101) internally comprise IGBT switches; and the IGBT switch is connected with the battery BMS.
5. A self-heating battery thermal management control device according to claim 1, characterized in that the heat conducting structure (4) is a heat conducting glue or a heat conducting pad.
6. A battery assembly comprising a battery thermal management device according to any of claims 1-5.
7. An electric vehicle comprising a battery assembly as claimed in claim 6.
8. A control method of a self-heating battery thermal management control device is realized by the self-heating battery thermal management control device, and is characterized by comprising the following steps:
step one, the battery BMS receives a heat management request signal and acquires the temperature of the battery module (1);
judging by the battery BMS according to the acquired temperature, and judging the heat management requirement;
step three, the battery BMS issues an instruction according to the heat management requirement judged in the step two and executes the instruction; the instructions fall into three thermal management modes: cooling mode, normal heating mode, self-heating mode; in the heating mode, if the battery assembly needs to be rapidly heated in a short time, selecting a self-heating mode, otherwise, selecting a normal heating mode;
step four, performing signal feedback on the thermal management mode to see whether the index requirement is met, and if the index requirement is not met, repeating the step three; otherwise, control of thermal management is exited.
9. The control method of the self-heating battery thermal management control device according to claim 8, wherein the cooling mode in step three is executed under the following condition:
Tmax≥Tlkwhen the battery BMS sends a cooling instruction to a VCU of the whole vehicle, a heat management water pump and a cooling loop of the whole vehicle are started to circulate, and cooling liquid in a cooling system (2) is started to circulate to cool the battery module (1);
wherein, TmaxThe current highest temperature; t islkTemperature for cooling mode on;
the following conditions need to be satisfied when the normal heating mode is executed:
Tmin≤Tjkwhen the battery BMS sends a heating instruction to a VCU of the whole vehicle, a heat management water pump and a heating loop of the whole vehicle are started to circulate, and cooling liquid in the cooling system (2) is started to circulate to carry out common heating on the battery module (1);
wherein, Tjm-Tjk≥6℃；TminIs the current minimum temperature; t isjkA normal heating mode start temperature; t isjmA normal heating mode target temperature;
the following condition needs to be satisfied when the self-heating mode is executed:
Tmin≤Tzjkwhen the battery BMS is used, the positive electrode (101) and the negative electrode (101) of the switch are controlled to realize high-frequency on-off, and the battery module (1) is self-heated; wherein T iszjm-Tzjk≥5℃；TminIs the current minimum temperature; t iszjkA self-heating mode on temperature; t iszjmIs the self-heating mode target temperature;
in addition, the heating temperature difference and the heating power of the on self-heating mode are obtained by the following formula:
Tc＝Tzjm-Tmin；
wherein theta is a safety coefficient, is obtained according to test calibration, and has a value range
TcIs the heating temperature difference; t isQIs the heating power; alpha is a structural characteristic coefficient, and the value range of alpha is more than or equal to 1.12 and less than or equal to 1.21; beta is a heat loss compensation coefficient, and the value range of beta is more than or equal to 1.05 and less than or equal to 1.13; q is the weight of the battery module; ccThe specific heat capacity of the battery module.
10. The control method of the self-heating battery thermal management control device according to claim 8, wherein the index requirements in the fourth step specifically include:
cooling mode: t ismax≤TlmThe standard is reached; wherein, TmaxThe current highest temperature; t islmA cooling mode target temperature;
normal heating mode: t ismin≥TjmThe standard is reached; wherein, TminIs the current minimum temperature; t isjmA normal heating mode target temperature;
self-heating mode: t ismin≥TzjmThe standard is reached; wherein, TminIs the current minimum temperature; t iszjmIs the self-heating mode target temperature.
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| CN202111444109.0A CN114335816B (en) | 2021-11-30 | 2021-11-30 | Self-heating battery thermal management control device, battery assembly, electric vehicle and method |
| PCT/CN2022/108492 WO2023098116A1 (en) | 2021-11-30 | 2022-07-28 | Self-heating battery thermal management control device, battery assembly, electric vehicle, and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115020868A (en) * | 2022-08-09 | 2022-09-06 | 中国第一汽车股份有限公司 | Heat management device, power battery assembly and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116487835B (en) * | 2023-06-25 | 2023-09-22 | 中国第一汽车股份有限公司 | Power battery assembly, control method for thermal management and vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525853A (en) * | 1968-08-16 | 1970-08-25 | Ford Motor Co | Automotive electric quick heat system |
| CN102474122A (en) * | 2009-08-05 | 2012-05-23 | 株式会社杰士汤浅国际 | Battery system |
| US20130216888A1 (en) * | 2010-08-12 | 2013-08-22 | Takahiro Shimura | Battery temperature regulation system and battery temperature regulation unit |
| CN111354996A (en) * | 2018-12-21 | 2020-06-30 | 比亚迪股份有限公司 | Vehicle and power battery temperature control device thereof |
| CN111446520A (en) * | 2020-03-18 | 2020-07-24 | 创驱（上海）新能源科技有限公司 | Device and method for heating power battery pack by adopting electromagnetic induction |
| CN112652840A (en) * | 2020-12-22 | 2021-04-13 | 芜湖奇达动力电池系统有限公司 | Temperature control method for battery thermal management system of electric vehicle |
| CN214706054U (en) * | 2021-04-30 | 2021-11-12 | 比亚迪股份有限公司 | Heating device, battery module and vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015158979A (en) * | 2014-02-21 | 2015-09-03 | 富士重工業株式会社 | On-vehicle battery |
| DE102014106954A1 (en) * | 2014-05-16 | 2015-11-19 | Valeo Klimasysteme Gmbh | Device for heating and cooling a battery pack |
| CN206134866U (en) * | 2016-10-17 | 2017-04-26 | 江苏速度智能科技有限公司 | Well low -speed new forms of energy electric automobile's BMS safety control system device |
| CN110854470B (en) * | 2019-11-27 | 2023-02-28 | 威马汽车制造温州有限公司 | Direct-cooling liquid-heating type battery thermal management system and control method for electric automobile and electric automobile |
| CN112706578B (en) * | 2020-07-28 | 2022-02-08 | 比亚迪股份有限公司 | Automobile battery thermal management system, automobile thermal management system and electric automobile |
| CN213649277U (en) * | 2020-08-07 | 2021-07-09 | 比亚迪股份有限公司 | Electric motor car thermal management system and vehicle |
-
2021
- 2021-11-30 CN CN202111444109.0A patent/CN114335816B/en active Active
-
2022
- 2022-07-28 WO PCT/CN2022/108492 patent/WO2023098116A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525853A (en) * | 1968-08-16 | 1970-08-25 | Ford Motor Co | Automotive electric quick heat system |
| CN102474122A (en) * | 2009-08-05 | 2012-05-23 | 株式会社杰士汤浅国际 | Battery system |
| US20130216888A1 (en) * | 2010-08-12 | 2013-08-22 | Takahiro Shimura | Battery temperature regulation system and battery temperature regulation unit |
| CN111354996A (en) * | 2018-12-21 | 2020-06-30 | 比亚迪股份有限公司 | Vehicle and power battery temperature control device thereof |
| CN111446520A (en) * | 2020-03-18 | 2020-07-24 | 创驱（上海）新能源科技有限公司 | Device and method for heating power battery pack by adopting electromagnetic induction |
| CN112652840A (en) * | 2020-12-22 | 2021-04-13 | 芜湖奇达动力电池系统有限公司 | Temperature control method for battery thermal management system of electric vehicle |
| CN214706054U (en) * | 2021-04-30 | 2021-11-12 | 比亚迪股份有限公司 | Heating device, battery module and vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 冯永忠;康永禄;: "宝马i3高电压元件介绍(下)", 汽车维修与保养, no. 11, 1 November 2015 (2015-11-01), pages 94 - 95 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115020868A (en) * | 2022-08-09 | 2022-09-06 | 中国第一汽车股份有限公司 | Heat management device, power battery assembly and control method thereof |
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