CN116435657B - Low-temperature lithium ion power battery heating device for new energy vehicle - Google Patents
Low-temperature lithium ion power battery heating device for new energy vehicle Download PDFInfo
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- CN116435657B CN116435657B CN202310298339.3A CN202310298339A CN116435657B CN 116435657 B CN116435657 B CN 116435657B CN 202310298339 A CN202310298339 A CN 202310298339A CN 116435657 B CN116435657 B CN 116435657B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 39
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 46
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000000523 sample Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
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- 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
-
- 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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/635—Control systems based on ambient temperature
-
- 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
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
- H01M10/6565—Gases with forced flow, e.g. by blowers with recirculation or U-turn in the flow path, i.e. back and forth
-
- 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)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a low-temperature lithium ion power battery heating device for a new energy vehicle, which relates to the field of low-temperature lithium ion batteries and comprises a battery box; a ventilating fan is arranged in the left end of the battery box, four lithium battery packs are arranged in the battery box in an arrangement mode, and the lithium battery packs are not contacted with each other; the top of the battery box is fixedly connected with a sealing cover plate through a bolt, and the bottom side of the sealing cover plate is contacted with the top of the lithium battery pack; and the rear side of the battery box is provided with a temperature control module, and the temperature control module is connected with the ventilating fan through a circuit. The hot air circulates in the formed air circulation passage, so that the internal temperature balance of the battery box is ensured, and the charge and discharge efficiency of the battery pack is further ensured. The problem that local temperature of the lithium battery pack is too high, heat distribution is uneven, charging and discharging efficiency is not remarkably improved, and low-temperature vehicle experience feeling of a driver is poor due to the fact that the lithium battery pack is heated in a multipoint mode is solved.
Description
Technical Field
The invention relates to the technical field of low-temperature lithium ion batteries, in particular to a low-temperature lithium ion power battery heating device for a new energy vehicle.
Background
With the development of society, the automobile industry in China is in rapid progress, especially for new energy automobiles. The new energy automobile is characterized in that the power battery, the low-temperature lithium ion battery is one of lithium metal batteries, can work normally at low temperature, but has lower charge and discharge efficiency, has the advantages of small volume, high specific energy, good cycle performance, low cost and the like, and is applied to the electric energy storage of the new energy automobile.
The low-temperature lithium ion power battery heating device for the new energy vehicle can refer to CN111355003B, and mainly comprises a super capacitor, a heating control unit, a main control switch, a power battery, an external heating device, a battery thermal management system, an external heating control switch, a resistance-adjustable heating film and a temperature sensor; when the automobile is started in a low-temperature severe cold environment, the heating control unit controls the super capacitor to be connected with the resistance-adjustable heating film and starts the external heating device according to a temperature signal of the temperature sensor, and when the temperature reaches a preset threshold value, the heating control unit cuts off discharge of the super capacitor, and the battery thermal management system maintains the working temperature of the power battery, so that the power battery can be quickly heated when being started in the low-temperature severe cold environment.
The existing low-temperature lithium ion power battery heating device for new energy vehicles is heated in a multi-point mode, local temperature of a lithium battery pack is quite easy to be high, heat distribution is uneven, charging and discharging efficiency is not remarkably improved, and a driver experiences poor low-temperature vehicle experience.
Disclosure of Invention
In view of the above, the invention provides a low-temperature lithium ion power battery heating device for a new energy vehicle, which aims to solve the problems that the existing low-temperature lithium ion power battery heating device for the new energy vehicle is heated in a multi-point mode, so that the local temperature of a lithium battery pack is high, the heat distribution is uneven, the charging and discharging efficiency is not obviously improved, and the experience of a driver in the low-temperature vehicle is poor.
The invention provides a low-temperature lithium ion power battery heating device for a new energy vehicle, which specifically comprises the following components: a battery box; a ventilating fan is arranged in the left end of the battery box, four lithium battery packs are arranged in the battery box in an arrangement mode, and the lithium battery packs are not contacted with each other; the top of the battery box is fixedly connected with a sealing cover plate through a bolt, and the bottom side of the sealing cover plate is contacted with the top of the lithium battery pack; a temperature control module is arranged at the rear side of the battery box and is connected with a ventilating fan through a circuit; six heating plates are arranged in the battery box and are positioned at the interval parts of the two lithium battery packs; an air inlet valve core is arranged in the left front end of the battery box, and an air outlet valve core is arranged in the right front end of the battery box; the T-shaped movable part and the electric push rod are arranged at the bottom of the battery box, the T-shaped movable part is in sliding contact with the bottom of the battery box, the rear end of the T-shaped movable part is connected with the electric push rod, the left end of the T-shaped movable part is connected with the air inlet valve core, and the right end of the T-shaped movable part is connected with the air outlet valve core.
Further, the battery box is internally provided with four battery placing grooves, the lithium battery pack is positioned in the battery placing grooves, the battery box is internally provided with a diversion channel, the diversion channel surrounds the outside of the battery placing grooves, and the diversion channel is communicated with the battery placing grooves.
Further, the temperature control module is connected with four probes through wires, the four probes are respectively positioned at the bottoms of the four battery placing grooves, the heating plate is positioned in the diversion channel, and the temperature control module is connected with the heating plate through wires.
Further, the left side of battery box is equipped with the air inlet channel, and the air inlet channel is linked together with the water conservancy diversion passageway, and the ventilating fan is located the air inlet channel, and battery box front side left end is equipped with the assembly chamber that admits air, and the assembly chamber that admits air is linked together with the air inlet channel, and the assembly chamber outside of admits air is equipped with the air inlet.
Further, the right side of the battery box is provided with an air outlet channel, the air outlet channel is communicated with the diversion channel, the right end of the front side of the battery box is provided with an air outlet assembly cavity, the air outlet assembly cavity is communicated with the air outlet channel, and the outer side of the air outlet assembly cavity is provided with an air outlet.
Further, the front side of the battery box is provided with a circulating channel, one end of the circulating channel is communicated with the air inlet assembly cavity, and the other end of the circulating channel is communicated with the air outlet assembly cavity.
Further, the air inlet valve core rotates in the air inlet assembly cavity, a T-shaped air inlet guide hole is formed in the air inlet valve core, and the T-shaped air inlet guide hole is communicated with the air inlet channel, the air inlet and the circulating channel respectively.
Further, the air outlet valve core rotates in the air outlet assembly cavity, a T-shaped air outlet guide hole is formed in the air outlet valve core, the T-shaped air outlet guide hole is respectively communicated with the air outlet channel, the air outlet and the circulating channel, and the rotation directions of the air inlet valve core and the air outlet valve core are opposite.
Further, battery box bottom is equipped with the spout, T shape moving part sliding connection is equipped with the slide opening respectively in the spout about the T shape moving part, and admission valve core bottom is equipped with adjusts pole A, adjusts pole A bottom side and is equipped with slider A, slider A sliding connection in the slide opening of T shape moving part left end offered, and the air outlet valve core bottom is equipped with adjusts pole B, adjusts pole B bottom side and is equipped with slider B, slider B sliding connection in the slide opening of T shape moving part right-hand member offered.
The beneficial effects are that: 1. according to the invention, the temperature of the lithium battery pack in the battery box is sensed through the probe connected with the temperature control module, when the temperature is lower than a set value, the air in the diversion channel is heated through the heating plate, so that the temperature in the battery box is improved, the influence of the too low temperature of the lithium battery pack on the charge and discharge efficiency is avoided, and the energy storage effect of the lithium battery pack is ensured.
2. When the temperature of the lithium battery pack in the battery box is too low, the temperature control module controls the electric push rod to extend, the electric push rod drives the T-shaped movable piece to move forwards along the chute, the T-shaped movable piece drives the air inlet valve core and the air outlet valve core to synchronously rotate, the T-shaped air inlet guide hole in the air inlet valve core is respectively communicated with the air inlet channel and the circulating channel, the T-shaped air outlet guide hole in the air outlet valve core is respectively communicated with the air outlet channel and the circulating channel, the diversion channel, the air inlet channel, the air outlet channel and the circulating channel form a complete air circulating channel, the temperature control module controls the ventilation fan to start, so that air heated in the diversion channel circulates in the formed air circulating channel, the internal temperature balance of the battery box is ensured, and potential safety hazards caused by overhigh local temperature of the battery pack are avoided.
3. According to the lithium battery pack cooling device, when the temperature of the lithium battery pack in the battery box is too high, the temperature control module controls the electric push rod to shrink, the electric push rod drives the T-shaped movable piece to move backwards along the sliding groove, the T-shaped movable piece drives the air inlet valve core and the air outlet valve core to synchronously rotate reversely, the T-shaped air inlet guide hole in the air inlet valve core is respectively communicated with the air inlet channel and the air inlet, the T-shaped air outlet guide hole in the air outlet valve core is respectively communicated with the air outlet channel and the air outlet, the two ends of the circulating channel are in a sealing state, the temperature control module controls the ventilation fan to start, air sequentially enters the diversion channel through the air inlet, the T-shaped air inlet guide hole and the air inlet channel, hot air in the diversion channel is sequentially discharged through the air outlet channel, the T-shaped air outlet guide hole and the air outlet, the hot air in the diversion channel is replaced, the cooling effect of the lithium battery pack is achieved, and the lithium battery pack is always operated at normal temperature.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings described below are only for illustration of some embodiments of the invention and are not intended to limit the invention.
In the drawings:
fig. 1 is a schematic diagram of a top front shaft side structure of a low-temperature lithium ion power battery heating device for a new energy vehicle according to an embodiment of the invention;
fig. 2 is a schematic diagram of a bottom rear axle side structure of a low-temperature lithium ion power battery heating device for a new energy vehicle according to an embodiment of the invention;
fig. 3 is a schematic view of a lithium battery pack structure inside a battery case according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a cross-sectional structure of a low-temperature lithium ion power battery heating device for a new energy vehicle according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a battery box according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of an intake valve spool side structure of an embodiment of the present invention;
FIG. 7 is a schematic illustration of the side structure of an outlet valve spindle according to an embodiment of the present invention;
fig. 8 is a schematic diagram of the axial side structure of a T-shaped mover according to an embodiment of the present invention.
List of reference numerals
1. A battery box; 101. a battery placement groove; 102. a diversion channel; 103. an air intake passage; 104. an air inlet assembly cavity; 1041. an air inlet; 105. an air outlet channel; 106. the air outlet assembly cavity; 1061. an air outlet; 107. a circulation passage; 108. a chute; 2. a ventilation fan; 3. a lithium battery pack; 4. sealing the cover plate; 5. a temperature control module; 501. a probe; 6. a heating plate; 7. an air inlet valve core; 701. t-shaped air inlet guide holes; 702. an adjusting rod A; 7021. a sliding block A; 8. an air outlet valve core; 801. t-shaped air outlet guide holes; 802. an adjusting rod B; 8021. a sliding block B; 9. a T-shaped movable member; 901. a slide hole; 10. an electric push rod.
Detailed Description
Examples: please refer to fig. 1 to 8:
the invention provides a low-temperature lithium ion power battery heating device for a new energy vehicle, which comprises a battery box 1; a ventilating fan 2 is arranged in the left end of the battery box 1, four lithium battery packs 3 are arranged in the battery box 1 in a row, and the lithium battery packs 3 are not contacted with each other; four battery placing grooves 101 are formed in the battery box 1, the lithium battery pack 3 is located in the battery placing grooves 101, a diversion channel 102 is formed in the battery box 1, the diversion channel 102 surrounds the outside of the battery placing grooves 101, and the diversion channel 102 is communicated with the battery placing grooves 101; the top of the battery box 1 is fixedly connected with a sealing cover plate 4 through a bolt, and the bottom side of the sealing cover plate 4 is contacted with the top of the lithium battery pack 3; the rear side of the battery box 1 is provided with a temperature control module 5, and the temperature control module 5 is connected with the ventilating fan 2 through a circuit; six heating plates 6 are arranged in the battery box 1, and the heating plates 6 are positioned at the interval parts of the two lithium battery packs 3; the temperature control module 5 is connected with four probes 501 through wires, the four probes 501 are respectively positioned at the bottoms of the four battery placing grooves 101, the heating plate 6 is positioned in the diversion channel 102, the temperature control module 5 is connected with the heating plate 6 through a circuit, the temperature of the lithium battery pack 3 in the battery box 1 is sensed through the probes 501 connected with the temperature control module 5, when the temperature is lower than a set value, the air in the diversion channel 102 is heated through the heating plate 6, the internal temperature of the battery box 1 is improved, the influence of the over-low temperature of the lithium battery pack 3 on the charge and discharge efficiency is avoided, and the energy storage effect of the lithium battery pack 3 is ensured; the left side of the battery box 1 is provided with an air inlet channel 103, the air inlet channel 103 is communicated with the diversion channel 102, the ventilation fan 2 is positioned in the air inlet channel 103, the left end of the front side of the battery box 1 is provided with an air inlet assembly cavity 104, the air inlet assembly cavity 104 is communicated with the air inlet channel 103, and the outer side of the air inlet assembly cavity 104 is provided with an air inlet 1041; the right side of the battery box 1 is provided with an air outlet channel 105, the air outlet channel 105 is communicated with the diversion channel 102, the right end of the front side of the battery box 1 is provided with an air outlet assembly cavity 106, the air outlet assembly cavity 106 is communicated with the air outlet channel 105, and the outer side of the air outlet assembly cavity 106 is provided with an air outlet 1061; the front side of the battery box 1 is provided with a circulating channel 107, one end of the circulating channel 107 is communicated with the air inlet assembly cavity 104, and the other end of the circulating channel 107 is communicated with the air outlet assembly cavity 106; an air inlet valve core 7 is arranged in the left front end of the battery box 1, and an air outlet valve core 8 is arranged in the right front end of the battery box 1; the bottom of the battery box 1 is provided with a T-shaped movable piece 9 and an electric push rod 10, the T-shaped movable piece 9 is in sliding contact with the bottom of the battery box 1, the rear end of the T-shaped movable piece 9 is connected with the electric push rod 10, the left end of the T-shaped movable piece 9 is connected with the air inlet valve core 7, and the right end of the T-shaped movable piece 9 is connected with the air outlet valve core 8.
The air inlet valve core 7 rotates in the air inlet assembly cavity 104, a T-shaped air inlet guide hole 701 is arranged in the air inlet valve core 7, the T-shaped air inlet guide hole 701 is respectively communicated with the air inlet channel 103, the air inlet 1041 and the circulating channel 107, the air outlet valve core 8 rotates in the air outlet assembly cavity 106, a T-shaped air outlet guide hole 801 is arranged in the air outlet valve core 8, the T-shaped air outlet guide hole 801 is respectively communicated with the air outlet channel 105, the air outlet 1061 and the circulating channel 107, the air inlet valve core 7 and the air outlet valve core 8 rotate in opposite directions, a sliding groove 108 is arranged at the bottom of the battery box 1, a T-shaped movable piece 9 is in sliding connection with the sliding groove 108, sliding holes 901 are respectively arranged at the left end and the right end of the T-shaped movable piece 9, an adjusting rod A702 is arranged at the bottom of the air inlet valve core 7, a sliding rod 7021 is in the sliding hole 901 formed at the left end of the T-shaped movable piece 9, an adjusting rod B802 is arranged at the bottom of the air outlet valve core 8, a sliding rod B8021 is arranged at the bottom of the adjusting rod B802, and a sliding hole 8021 is in the sliding connection with the sliding hole formed at the right end of the T-shaped movable piece 9;
by adopting the technical scheme, when the temperature of the lithium battery pack 3 in the battery box 1 is too low, the temperature control module 5 controls the electric push rod 10 to extend, the electric push rod 10 drives the T-shaped movable part 9 to move forwards along the chute 108, the T-shaped movable part 9 drives the air inlet valve core 7 and the air outlet valve core 8 to synchronously rotate, the T-shaped air inlet guide hole 701 in the air inlet valve core 7 is respectively communicated with the air inlet channel 103 and the circulating channel 107, the T-shaped air outlet guide hole 801 in the air outlet valve core 8 is respectively communicated with the air outlet channel 105 and the circulating channel 107, the air guide channel 102, the air inlet channel 103, the air outlet channel 105 and the circulating channel 107 form a complete air circulating channel, the temperature control module 5 controls the ventilation fan 2 to start, so that the air heated in the air guide channel 102 circulates in the formed air circulating channel, the internal temperature balance of the battery box 1 is ensured, and potential safety hazards caused by local overhigh temperature of the battery box 1 are avoided, when the temperature of the lithium battery pack 3 in the battery box 1 is too high, the temperature control module 5 controls the electric push rod 10 to shrink, the electric push rod 10 drives the T-shaped movable piece 9 to move backwards along the chute 108, the T-shaped movable piece 9 drives the air inlet valve core 7 and the air outlet valve core 8 to synchronously rotate reversely, the T-shaped air inlet guide hole 701 in the air inlet valve core 7 is respectively communicated with the air inlet channel 103 and the air inlet 1041, the T-shaped air outlet guide hole 801 in the air outlet valve core 8 is respectively communicated with the air outlet channel 105 and the air outlet 1061, the two ends of the circulation channel 107 are in a sealed state, the temperature control module 5 controls the ventilation fan 2 to start, air enters the diversion channel 102 through the air inlet 1041, the T-shaped air inlet guide hole 701 and the air inlet channel 103 in sequence, hot air in the diversion channel 102 is discharged through the air outlet channel 105, the T-shaped air outlet guide hole 801 and the air outlet 1061 in sequence, and hot air in the diversion channel 102 is replaced, plays the cooling effect to the lithium battery pack 3, ensures that the lithium battery pack 3 always operates at normal temperature.
Specific use and action of the embodiment: in the invention, the probe 501 connected with the temperature control module 5 senses the temperature of the lithium battery pack 3 in the battery box 1, and when the temperature is lower than a set value, the heating plate 6 heats the air in the diversion channel 102, so that the temperature in the battery box 1 is improved, the charge and discharge efficiency is prevented from being influenced by the excessively low temperature of the lithium battery pack 3, and the energy storage effect of the lithium battery pack 3 is ensured; meanwhile, the temperature control module 5 controls the electric push rod 10 to extend, the electric push rod 10 drives the T-shaped movable piece 9 to move forwards along the chute 108, the T-shaped movable piece 9 drives the air inlet valve core 7 and the air outlet valve core 8 to rotate synchronously, the T-shaped air inlet guide hole 701 in the air inlet valve core 7 is respectively communicated with the air inlet channel 103 and the circulating channel 107, the T-shaped air outlet guide hole 801 in the air outlet valve core 8 is respectively communicated with the air outlet channel 105 and the circulating channel 107, the air guide channel 102, the air inlet channel 103, the air outlet channel 105 and the circulating channel 107 form a complete air circulating channel, the temperature control module 5 controls the ventilation fan 2 to start, so that air heated in the air guide channel 102 circulates in the formed air circulating channel in a circulating way, the internal temperature balance of the battery box 1 is ensured, and potential safety hazards caused by overhigh local temperature of the battery box 1 are avoided; when the temperature of the lithium battery pack 3 in the battery box 1 is too high, the temperature control module 5 controls the electric push rod 10 to shrink, the electric push rod 10 drives the T-shaped movable piece 9 to move backwards along the chute 108, the T-shaped movable piece 9 drives the air inlet valve core 7 and the air outlet valve core 8 to synchronously rotate reversely, the T-shaped air inlet guide hole 701 in the air inlet valve core 7 is respectively communicated with the air inlet channel 103 and the air inlet 1041, the T-shaped air outlet guide hole 801 in the air outlet valve core 8 is respectively communicated with the air outlet channel 105 and the air outlet 1061, the two ends of the circulation channel 107 are in a sealed state, the temperature control module 5 controls the ventilation fan 2 to start, air enters the diversion channel 102 sequentially through the air inlet 1041, the T-shaped air inlet guide hole 701 and the air inlet channel 103, hot air in the diversion channel 102 is discharged sequentially through the air outlet channel 105, the T-shaped air outlet guide hole 801 and the air outlet 1061, the hot air in the diversion channel 102 is replaced, the cooling effect of the lithium battery pack 3 is achieved, and the lithium battery pack 3 is always operated at a normal temperature.
Claims (3)
1. The low-temperature lithium ion power battery heating device for the new energy vehicle is characterized by comprising a battery box (1); a ventilating fan (2) is arranged in the left end of the battery box (1), four lithium battery packs (3) are arranged in the battery box (1), and the lithium battery packs (3) are not contacted with each other; the top of the battery box (1) is fixedly connected with a sealing cover plate (4) through bolts, and the bottom side of the sealing cover plate (4) is contacted with the top of the lithium battery pack (3); a temperature control module (5) is arranged at the rear side of the battery box (1), and the temperature control module (5) is connected with the ventilating fan (2) through a circuit; six heating plates (6) are arranged in the battery box (1), and the heating plates (6) are positioned at the interval parts of the two lithium battery packs (3); an air inlet valve core (7) is arranged in the left front end of the battery box (1), and an air outlet valve core (8) is arranged in the right front end of the battery box (1); the bottom of the battery box (1) is provided with a T-shaped movable piece (9) and an electric push rod (10), the T-shaped movable piece (9) is in sliding contact with the bottom of the battery box (1), the rear end of the T-shaped movable piece (9) is connected with the electric push rod (10), the left end of the T-shaped movable piece (9) is connected with an air inlet valve core (7), and the right end of the T-shaped movable piece (9) is connected with an air outlet valve core (8); four battery placing grooves (101) are formed in the battery box (1), the lithium battery pack (3) is located in the battery placing grooves (101), a flow guide channel (102) is formed in the battery box (1), the flow guide channel (102) surrounds the outside of the battery placing grooves (101), and the flow guide channel (102) is communicated with the battery placing grooves (101); the heating plate (6) is positioned in the diversion channel (102), and the temperature control module (5) is connected with the heating plate (6) through a circuit; an air inlet channel (103) is formed in the left side of the battery box (1), the air inlet channel (103) is communicated with the flow guide channel (102), the ventilating fan (2) is positioned in the air inlet channel (103), an air inlet assembly cavity (104) is formed in the left end of the left side of the battery box (1), the air inlet assembly cavity (104) is communicated with the air inlet channel (103), and an air inlet (1041) is formed in the outer side of the air inlet assembly cavity (104); the right side of the battery box (1) is provided with an air outlet channel (105), the air outlet channel (105) is communicated with the diversion channel (102), the right end of the front side of the battery box (1) is provided with an air outlet assembly cavity (106), the air outlet assembly cavity (106) is communicated with the air outlet channel (105), and an air outlet (1061) is arranged at the outer side of the air outlet assembly cavity (106); the front side of the battery box (1) is provided with a circulating channel (107), one end of the circulating channel (107) is communicated with the air inlet assembly cavity (104), and the other end of the circulating channel (107) is communicated with the air outlet assembly cavity (106); the air inlet valve core (7) rotates in the air inlet assembly cavity (104), a T-shaped air inlet guide hole (701) is formed in the air inlet valve core (7), and the T-shaped air inlet guide hole (701) is respectively communicated with the air inlet channel (103), the air inlet (1041) and the circulating channel (107); the air outlet valve core (8) rotates in the air outlet assembly cavity (106), a T-shaped air outlet guide hole (801) is formed in the air outlet valve core (8), the T-shaped air outlet guide hole (801) is respectively communicated with the air outlet channel (105), the air outlet (1061) and the circulating channel (107), and the rotation direction of the air inlet valve core (7) is opposite to that of the air outlet valve core (8); the left end and the right end of the T-shaped movable piece (9) are respectively provided with a slide hole (901), the bottom of the air inlet valve core (7) is provided with an adjusting rod A (702), the bottom side of the adjusting rod A (702) is provided with a sliding block A (7021), the sliding block A (7021) is in sliding connection with the slide hole (901) arranged at the left end of the T-shaped movable piece (9), the bottom of the air outlet valve core (8) is provided with an adjusting rod B (802), the bottom side of the adjusting rod B (802) is provided with a sliding block B (8021), and the sliding block B (8021) is connected in a sliding hole (901) formed in the right end of the T-shaped movable piece (9) in a sliding mode.
2. The low-temperature lithium ion power battery heating device for the new energy vehicle, as claimed in claim 1, is characterized in that: the temperature control module (5) is connected with four probes (501) through wires, and the four probes (501) are respectively positioned at the bottoms of the four battery placing grooves (101).
3. The low-temperature lithium ion power battery heating device for the new energy vehicle, as claimed in claim 1, is characterized in that: the bottom of the battery box (1) is provided with a chute (108), and the T-shaped movable piece (9) is connected in the chute (108) in a sliding way.
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Effective date of registration: 20240527 Address after: 276000, 5th Floor, Yanjie Building, Southwest Corner, Intersection of Yimeng Road and Chengdu Road, Liuqing Street, Lanshan District, Linyi City, Shandong Province Patentee after: Linyi Xinghu New Energy Technology Co.,Ltd. Country or region after: China Address before: 130052, 3050 triumph Road, Jilin, Changchun Patentee before: JILIN TEACHERS' INSTITUTE OF ENGINEERING & TECHNOLOGY Country or region before: China |