CN111048867A - Wind-liquid coupling heat dissipation system and control method thereof - Google Patents
Wind-liquid coupling heat dissipation system and control method thereof Download PDFInfo
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/65—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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
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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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
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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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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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 provides a wind-liquid coupling heat dissipation system and a control method thereof, wherein the heat dissipation system comprises: box, electric core, air outlet, air intake, liquid cooling board. The liquid cooling plate is arranged below the battery module, and cooling fluid is cooled through the flowing of the cooling fluid in the liquid cooling plate and the air inlet condition at the air inlet; the heat dissipation method comprises the following steps: according to the real-time temperature change condition of the battery module, the arrangement form of each battery cell is adjusted to form cooling air channels of different forms, and the fan working conditions of different air inlets and the cooling liquid flow in the liquid cooling plate are adjusted simultaneously, so that the heat dissipation efficiency is improved in real time. According to the invention, the air channel and the flow of the cooling liquid are optimized in real time, so that the heat dissipation efficiency is always kept in an optimal state along with the temperature distribution of the battery module. The invention improves the thermal equilibrium of the battery module, further improves the service performance and the service life of the battery module, and reduces the heat dissipation time of the battery module.
Description
Technical Field
The invention relates to the technical field of heat dissipation of power battery systems of new energy automobiles, in particular to a wind-liquid coupling heat dissipation system and a control method thereof
Background
At present, new energy automobiles are widely popularized at home and abroad, and the working driving energy of the new energy automobiles is driven by a pure motor or a motor and an internal combustion engine in a mixed mode. The power battery system composed of lithium ion batteries is mainly used for supplying the electric energy, and generally, the number of the battery cores is large to meet the requirement of driving of the vehicle, so that a large-capacity high-voltage energy supply platform is formed. Because the battery pack is used as a main power source, the power of the motor is high in the normal running process of the vehicle, the power battery system outputs high current and generates a large amount of heat, and therefore the heat management of the power battery system is particularly important. Because the internal structure of the power battery system is compact, the heat dissipation conditions accepted by each battery monomer are obviously different, so the temperature rise rate is different, when the power battery system works for a long time, the temperature of part of batteries is overhigh, and the temperature difference in the system is overlarge, so the overall service performance and the service life of the power battery system are reduced. In order to ensure that the power battery system can normally work, prolong the service life of the power battery system and ensure the working performance of the power battery system, a heat dissipation system is very important.
At present, air cooling or liquid cooling is mainly adopted for the heat dissipation mode of the power battery system of the new energy electric vehicle, and liquid cooling heat dissipation adopting a liquid cooling plate gradually becomes the mainstream due to pursuit of service performance of the vehicle and large discharge rate. Through arranging the liquid cooling board below the group battery, the coolant flow is taken away the heat that the battery transmitted to the liquid cooling board through the liquid cooling board, realize the cooling to the group battery, but present liquid cooling board structural style is fixed, only can adjust the flow size, can't carry out the adjustment of radiating efficiency according to the temperature distribution of group battery real-time change, the radiating mode is single, can't carry out local intensive heat dissipation to the high temperature region promptly, cause the radiating efficiency low, can't be with the high temperature battery control that causes because the operating mode changes in suitable temperature range, the group battery thermal equilibrium is poor simultaneously, make the performance and the life of battery receive the restriction.
Patent publication No. CN105742693A, 2016, 7, 6, the name invented and created is a high-safety lithium ion battery module, and the application discloses a high-safety lithium ion battery module, which has the following defects: 1. the liquid cooling device adopted by the high-safety lithium ion battery module disclosed by the invention cannot adjust the heat dissipation efficiency according to the real-time temperature distribution of the battery pack; 2. the time required to dissipate the heat of the battery to a certain temperature value is long.
Patent publication No. CN201510584799.8, published 2015, 12, 23, the name invented and created is a battery water-cooling radiator, and the application discloses a battery water-cooling radiator, which has the defect that a liquid-cooling plate is adopted to radiate heat of a battery pack, but the structural form of the liquid-cooling plate is fixed, so that the radiating efficiency cannot be adjusted according to the real-time change of the temperature of the battery pack, and the thermal balance of the battery is reduced.
Disclosure of Invention
In view of this, the present invention provides a wind-liquid coupled heat dissipation system and a control method thereof, which are used for heat dissipation when a power battery system of a new energy vehicle normally works, so as to ensure that the power battery system is always in an optimal discharge temperature range during working, improve the thermal equilibrium of a battery pack, and ensure the service performance and the service life of the power battery system.
In order to achieve the purpose, the invention provides the following technical scheme: a wind-liquid coupled heat dissipation system, comprising: the air duct comprises a box body, a battery cell, an air outlet, a first air inlet and a second air inlet; a plurality of electric cores are arranged on the liquid cooling plate, the side faces of the electric cores are opposite to the air inlet and the air outlet, namely, when the air inlet I and the air inlet II enter air, the electric cores flow from the side faces of the electric cores and then flow out of the air outlet, and all the electric cores 2 and the liquid cooling plate 6 are arranged in the box body 1.
Meanwhile, the liquid cooling module comprises a liquid cooling plate, a low-voltage wire harness, a low-voltage interface, a liquid inlet, a flow passage partition plate, a sliding block, a glue layer, a magnetic expansion spring, a magnetic induction coil and a sliding rail; the liquid cooling plate is internally divided into a double-layer structure, the upper layer is a structure for controlling the electric core to move to form an air channel, the lower layer is a flow channel structure for flowing cooling liquid, two triangular slide rails are pre-formed on two sides of the upper surface of the liquid cooling plate during manufacturing, slide blocks with the same number of the electric cores are arranged in the slide rails, every two slide blocks are connected by a magnetic telescopic spring, the upper surface of each slide block is a glue layer and is bonded and fixed with the bottom of the electric core through the glue layer, the glue layer has good high temperature resistance, insulativity and waterproofness, partition plates are arranged below the slide rails and are of a hollow structure and have good waterproof insulation and magnetic conductivity, magnetic induction coils with the same number are arranged below the corresponding magnetic telescopic springs, the magnetic induction coils are connected by low-voltage wire harnesses and are finally connected to a low-voltage interface to obtain a power supply from the outside, and the corresponding magnetic induction coils are electrified to, the magnetic expansion spring is extended, so that the corresponding slide block is displaced, and the battery cell is driven to move; for the lower-layer flow channel structure, different numbers of flow channels are formed through the arrangement of the flow channel partition plates, and cooling liquid enters the liquid cooling plate through the liquid inlet to flow.
In combination with the wind-liquid coupled heat dissipation system, the invention provides the following control method:
the heat dissipation system generally comprises three control modes through controlling the magnetic field, the air inlet quantity and the liquid inlet quantity, the required control quantity comprises the temperature T of each battery cell and the maximum temperature difference T between the battery cellsdTemperature rise rate V of each cell, coolant flow Q, and primary temperature safety set value TaMiddle temperature safety set value TbHigh level temperature safety set value TcPrimary temperature rise rate safety set value VeMiddle temperature safety set value VfHigh level temperature safety set value VgWherein T isa＜Tb＜Tc，Ve＜Vf＜VgThe patent only includes 5 battery cells, but is not limited to the above, and the control method is as follows:
no air duct mode: t is1,T2,T3,T4,T5Temperature corresponding to 5 cells when { T }1,T2,T3,T4,T5}maxLess than or equal to the primary temperature safety set value TaAt the same time TdLess than or equal to the safety value V1,V2,V3,V4,V5The rate of temperature rise corresponding to 5 cells; when { V }1,V2,V3,V4,V5}maxLess than or equal to the safety set value V of the primary temperature rise rateeIf so, the magnetic induction coil 15 is not started, no space exists between the battery cells, no air duct is formed, cooling liquid flow is simply adopted for heat dissipation, and the flow Q of the cooling liquid is increased;
half air duct mode: (1) when the primary temperature is set to a safe value Ta≤{T1,T2,T3,T4,T5}maxLess than or equal to middle-grade temperature safety set value Tb(ii) a (2) When { T }1,T2,T3,T4,T5}max≤TaAnd TdThe safety value is more than or equal to; (3) when the initial temperature rise rate is a safe set value Ve≤{V1,V2,V3,V4,V5}maxSafety set value V of temperature rise rate not greater than middle levelf(ii) a When the conditions at least meet one of the conditions, starting half of the magnetic induction coils to form a space between half of the electric cores to form an air channel, and feeding air into an air inlet at the electric core with the space formed, and increasing the flow Q of the cooling liquid;
full air duct mode: (1) when high-grade temperature safety set value Tc≤{T1,T2,T3,T4,T5}max(ii) a (2) Current intermediate temperature safety set value Tb≤{T1,T2,T3,T4,T5}max≤TcAnd TdThe safety value is more than or equal to; (3) when the high-grade temperature rise rate is a safe set value Vg≤{V1,V2,V3,V4,V5}max(ii) a When the above conditions at least meet one of the conditions, all the magnetic induction coils are started to form intervals between all the electric cores to form an air duct, and the two air inlets are used for introducing air, and simultaneouslyThe coolant flow Q is adjusted to a maximum.
Compared with the prior art, the invention has the following beneficial effects:
(1) the air-liquid coupling heat dissipation system and the control method thereof disclosed by the invention adjust the heat dissipation efficiency according to the real-time temperature distribution change condition of the power battery system, and can improve the heat dissipation efficiency of a high-temperature position in a targeted manner.
(2) The air-liquid coupling heat dissipation system and the control method thereof disclosed by the invention have the advantages that the time required by the heat dissipation of the power battery system is greatly reduced, so that the service performance and the service life of the battery pack are greatly improved.
(3) The invention discloses a wind-liquid coupling heat dissipation system and a control method thereof, which can control the temperature difference inside a battery pack within a smaller range and improve the heat balance of a battery module.
Drawings
In order to more clearly illustrate the air-liquid coupling heat dissipation system and the control method thereof of the present invention, the following will make a simple and intuitive description of the above-mentioned components and the control method workflow by using the drawings, where the drawings in the following description are only an example of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Drawings
FIG. 1 is a layout diagram of a wind-liquid coupled heat dissipation system according to an embodiment of the present invention
FIG. 2 is a plan view of a liquid cooling plate according to an embodiment of the present invention
FIG. 3 is a side cross-sectional view of a liquid cooling plate according to an embodiment of the present invention
FIG. 4 is a schematic view of a no-air-duct mode according to an embodiment of the present invention
FIG. 5 is a schematic diagram of a half-duct mode according to an embodiment of the present invention
FIG. 6 is a schematic diagram of a full air duct mode according to an embodiment of the present invention
Wherein: 1-box body, 2-battery cell, 3-air outlet, 4-air inlet I, 5-air inlet II, 6-liquid cooling plate, 7-low-voltage wire harness, 8-low-voltage interface, 9-liquid inlet, 10-flow channel clapboard, 11-clapboard, 12-slide block, 13-glue layer, 14-magnetic expansion spring, 15-magnetic induction coil and 16-slide rail.
Detailed Description
The embodiment of the invention discloses a wind-liquid coupling heat dissipation system and a control method thereof, which are used for a power battery system of a new energy automobile and can ensure that the power battery system is in an optimal temperature range during working.
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. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
As shown in fig. 1, the wind-liquid coupled heat dissipation system provided in the embodiment of the present invention includes: the air duct comprises a box body 1, a battery cell 2, an air outlet 3, an air inlet I4 and an air inlet II 5; a plurality of electric cores 2 are arranged on the liquid cooling plate 6, the side surfaces of the electric cores 2 are opposite to the air inlet and the air outlet, namely, when the air inlet I4 and the air inlet II 5 are used for air inlet, the air flows from the side surfaces of the electric cores 2 and then flows out of the air outlet 3, and all the electric cores 2 and the liquid cooling plate 6 are arranged in the box body 1.
As shown in fig. 2 and fig. 3, the liquid cooling module in the air-liquid coupling heat dissipation system according to the embodiment of the present invention includes a liquid cooling plate 6, a low voltage wire harness 7, a low voltage interface 8, a liquid inlet 9, a flow channel partition plate 10, a partition plate 11, a slider 12, a glue layer 13, a magnetic expansion spring 14, a magnetic induction coil 15, and a slide rail 16;
the liquid cooling plate 6 is internally divided into a double-layer structure, the upper layer is a structure for controlling the electric core 2 to move to form an air channel, the lower layer is a flow channel structure for flowing cooling liquid, two triangular slide rails 16 are pre-formed on two sides of the upper surface of the liquid cooling plate 6 during manufacturing, sliders 12 with the same number of the electric cores are arranged in the slide rails 16, every two sliders 12 are connected by a magnetic expansion spring 14, the upper surfaces of the sliders are adhesive layers 13 and are fixedly bonded with the bottom of the electric core 2 through the adhesive layers 13, the adhesive layers 13 have good high temperature resistance, insulativity and waterproofness, partition plates 11 are arranged below the slide rails 16, the partition plates 11 are of a hollow structure and have good waterproof insulation and magnetic conductivity, magnetic induction coils 15 with the same number are arranged below the corresponding magnetic expansion springs 14, the magnetic induction coils 15 are connected by low-voltage wire harnesses 7 and are finally connected to a low-voltage interface 8 to obtain a power supply from, the corresponding magnetic induction coil 15 generates a magnetic field by electrifying the corresponding magnetic induction coil 15, and the magnetic telescopic spring 14 extends to displace the corresponding slide block and drive the electric core 2 to move; for the lower-layer flow channel structure, different numbers of flow channels are formed through the arrangement of the flow channel partition plates 10, and cooling liquid enters the liquid cooling plate 6 through the liquid inlet 9 to flow.
As shown in fig. 4, 5 and 6, a control method of a wind-liquid coupled heat dissipation system according to an embodiment of the present invention is as follows: the heat dissipation system generally comprises three control modes through controlling the magnetic field, the air inlet quantity and the liquid inlet quantity, the required control quantity comprises the temperature T of each battery cell and the maximum temperature difference T between the battery cellsdTemperature rise rate V of each cell, coolant flow Q, and primary temperature safety set value TaMiddle temperature safety set value TbHigh level temperature safety set value TcPrimary temperature rise rate safety set value VeMiddle temperature safety set value VfHigh level temperature safety set value VgWherein T isa＜Tb＜Tc，Ve＜Vf＜VgThe patent only includes 5 battery cells, but is not limited to this, and the control method is as follows:
no air duct mode: when { T }1,T2,T3,T4,T5}maxLess than or equal to the primary temperature safety set value TaAt the same time TdNo more than the safety value, { V1,V2,V3,V4,V5}maxLess than or equal to the safety set value V of the primary temperature rise rateeThen, the magnetic induction coil 15 is not started, the electric cores have no space, no air duct is formed, the cooling liquid flow is simply adopted for heat dissipation, and the cooling liquid is addedA flow rate Q;
half air duct mode: (1) when the primary temperature is set to a safe value Ta≤{T1,T2,T3,T4,T5}maxLess than or equal to middle-grade temperature safety set value Tb(ii) a (2) When { T }1,T2,T3,T4,T5}max≤TaAnd TdThe safety value is more than or equal to; (3) when the initial temperature rise rate is a safe set value Ve≤{V1,V2,V3,V4,V5}maxSafety set value V of temperature rise rate not greater than middle levelf(ii) a When the above conditions at least meet one of the conditions, starting half of the magnetic induction coils 15 to form a gap between half of the cells to form an air duct, and feeding air into an air inlet at the cell forming the gap, and increasing the flow Q of the cooling liquid;
full air duct mode: (1) when high-grade temperature safety set value Tc≤{T1,T2,T3,T4,T5}max(ii) a (2) Current intermediate temperature safety set value Tb≤{T1,T2,T3,T4,T5}max≤TcAnd TdThe safety value is more than or equal to; (3) when the high-grade temperature rise rate is a safe set value Vg≤{V1,V2,V3,V4,V5}max(ii) a When the above conditions at least satisfy one of them, then start all magnetic induction coils 15, make to form the interval between all electric cores, form the wind channel, two air intakes all enter the air, adjust coolant liquid flow Q to the biggest simultaneously.
According to the technical scheme, the air-liquid coupling heat dissipation system and the control method thereof are provided, the heat dissipation problem of the power battery system of the new energy automobile in working is solved, the power battery system is guaranteed to reach the optimal temperature range of the battery pack in working in a short time in working, the heat balance of the battery pack is improved, and the service performance and the service life of the power system of the new energy automobile are guaranteed.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (2)
1. A wind-liquid coupled heat dissipation system, comprising: the air duct module comprises a box body (1) and electric cores (2) arranged side by side, an air outlet (3) is formed in one side of the box body (1), and a first air inlet (4) and a second air inlet (5) are formed in the other side of the box body (1); the plurality of electric cores (2) are arranged on the liquid cooling plate (6), the side surfaces of the electric cores (2) are opposite to the air inlet and the air outlet, namely, when the air inlet I (4) and the air inlet II (5) are used for air inlet, the electric cores flow from the side surfaces of the electric cores (2) and then flow out of the air outlet (3), and all the electric cores (2) and the liquid cooling plate (6) are arranged in the box body (1);
the liquid cooling module comprises a liquid cooling plate (6), a low-voltage wire harness (7), a low-voltage interface (8), a liquid inlet (9), a flow channel partition plate (10), a partition plate (11), a sliding block (12), a glue layer (13), a magnetic telescopic spring (14), a magnetic induction coil (15) and a sliding rail (16);
the liquid cooling plate (6) is internally divided into a double-layer structure, the upper layer is a structure for controlling the electric core (2) to move to form an air channel, the lower layer is a flow channel structure for flowing cooling liquid, for the upper layer structure, two triangular slide rails (16) are formed in advance on two sides of the upper surface of the liquid cooling plate (6) during manufacturing, slide blocks (12) with the same number of the electric cores are arranged in the slide rails (16), every two slide blocks (12) are connected by adopting a magnetic expansion spring (14), the upper surfaces of the slide blocks are glue layers (13) and are fixedly bonded with the bottoms of the electric cores (2) through the glue layers (13), partition plates (11) are arranged below the slide rails (16), the partition plates (11) are of a hollow structure, magnetic induction coils (15) and low-voltage wiring harnesses (7) are arranged inside the liquid cooling plate, the magnetic induction coils (15) with the same number are arranged below the corresponding magnetic expansion springs (14), and the magnetic, finally, the magnetic induction coil (15) is electrified to generate a magnetic field, so that the magnetic expansion spring (14) extends to enable the corresponding sliding block to displace, and the electric core (2) is driven to move; for the lower-layer flow channel structure, different numbers of flow channels are formed through the arrangement of the flow channel partition plates (10), and cooling liquid enters the liquid cooling plate (6) through the liquid inlet (9) to flow.
2. The method for controlling the wind-liquid coupled heat dissipation system according to claim 1, wherein: the heat dissipation system comprises three control modes through controlling a magnetic field, the air intake and the liquid inlet quantity:
the required control quantity comprises the temperature T of each battery cell and the maximum value T of the temperature difference between the battery cellsdTemperature rise rate V of each cell, coolant flow Q, and primary temperature safety set value TaMiddle temperature safety set value TbHigh level temperature safety set value TcPrimary temperature rise rate safety set value VeMiddle temperature safety set value VfHigh level temperature safety set value VgWherein T isa＜Tb＜Tc，Ve＜Vf＜VgIf there are 5 cells, the control method is as follows:
no air duct mode: t is1,T2,T3,T4,T5Temperature corresponding to 5 cells when { T }1,T2,T3,T4,T5}maxLess than or equal to the primary temperature safety set value TaAt the same time TdLess than or equal to the safety value V1,V2,V3,V4,V5The rate of temperature rise corresponding to 5 cells; when { V }1,V2,V3,V4,V5}maxLess than or equal to the safety set value V of the primary temperature rise rateeIf the magnetic induction coil (15) is not started, the electric cores have no space, no air channel is formed, the cooling liquid flow is simply adopted for heat dissipation, and the cooling liquid flow Q is increased;
half air duct mode: 1) when the primary temperature is set to a safe value Ta≤{T1,T2,T3,T4,T5}maxLess than or equal to middle-grade temperature safety set value Tb(ii) a 2) When { T }1,T2,T3,T4,T5}max≤TaAnd TdThe safety value is more than or equal to; 3) when the initial temperature rise rate is a safe set value Ve≤{V1,V2,V3,V4,V5}maxSafety set value V of temperature rise rate not greater than middle levelf(ii) a When the conditions at least meet one of the conditions, starting half of the magnetic induction coils (15) to form a space between half of the electric cores to form an air channel, and feeding air into an air inlet at the electric core with the space formed, and increasing the flow Q of the cooling liquid;
full air duct mode: 1) when high-grade temperature safety set value Tc≤{T1,T2,T3,T4,T5}max(ii) a 2) Current intermediate temperature safety set value Tb≤{T1,T2,T3,T4,T5}max≤TcAnd TdThe safety value is more than or equal to; 3) when the high-grade temperature rise rate is a safe set value Vg≤{V1,V2,V3,V4,V5}max(ii) a When the above conditions at least meet one of the conditions, all the magnetic induction coils (15) are started to form intervals between all the electric cores to form an air channel, air is fed into both the two air inlets, and the flow Q of the cooling liquid is adjusted to be maximum.
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Cited By (4)
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| CN111864300A (en) * | 2020-06-28 | 2020-10-30 | 江苏大学 | Composite cooling structure based on loop state monitoring and control method thereof |
| CN115020877A (en) * | 2022-08-09 | 2022-09-06 | 时代广汽动力电池有限公司 | Preparation process of new energy battery for improving energy storage capacity |
| EP4138178A1 (en) * | 2021-08-20 | 2023-02-22 | Hyundai Mobis Co., Ltd. | Lower case of battery module having cooling block and manufacturing method thereof |
| CN117458043A (en) * | 2023-12-25 | 2024-01-26 | 深圳市神通天下科技有限公司 | High-power lithium ion battery device |
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