CN117423938A - Energy storage battery thermal management system and working method thereof - Google Patents
Energy storage battery thermal management system and working method thereof Download PDFInfo
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- 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
- H01M10/615—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
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- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- 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
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/65—Means for temperature control structurally associated with the cells
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- 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
- H01M10/656—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
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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
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- 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
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
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- 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
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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Abstract
The invention relates to the technical field of energy storage battery thermal management, and discloses an energy storage battery thermal management system and a working method thereof, wherein the energy storage battery thermal management system comprises: the heat pipe battery frame comprises a heat pipe condensation section and a heat pipe evaporation section; the absorption refrigerator and the fan are suitable for forming a cooling unit to cool and dissipate heat of the condensing section of the heat pipe; the heat storage device is connected with the absorption refrigerator to drive the absorption refrigerator to operate; the solar heat collecting plate is connected with the heat storage device together to form a photo-thermal heat storage unit, and is suitable for collecting solar energy and storing heat in the heat storage device; the heating pipe is arranged in the heat storage device, the heating pipe and the working medium pump are suitable for forming a heating unit together with the heat storage device, one end of the working medium pump is connected with the evaporation section of the heat pipe, the other end of the working medium pump is connected with the heat storage device, and the working medium pump is suitable for driving working medium of the heat pipe to circulate. The invention can realize the uniform distribution of the temperature of the energy storage battery and improve the utilization rate of comprehensive energy.
Description
Technical Field
The invention relates to the technical field of energy storage battery thermal management, in particular to an energy storage battery thermal management system and a working method thereof.
Background
The existing container energy storage battery has wide development prospect due to the advantages of convenient installation and transportation, short construction period and strong environment adaptability. However, with the continuous increase of the overall energy density, battery safety accidents of the energy storage system, which are characterized by thermal runaway, frequently occur, which seriously threatens the safety of electricity and the life safety of related personnel.
The cooling techniques mainly adopted by the energy storage battery system at present are air cooling, liquid cooling and phase change material cooling. The air cooling is to send a low-temperature medium into the system, and the medium flows through the surface of the battery to take away the heat generated by the battery by using two heat transfer modes of heat conduction and heat convection, so as to achieve the aim of cooling. The air cooling system has the advantages of simple structure, convenient installation and lower cost. The liquid cooling is a heat management technology using liquid as a heat transfer medium, and utilizes the characteristics of higher specific heat and heat conductivity coefficient of the liquid to exchange heat between the low-temperature liquid and the high-temperature battery, so as to achieve the purpose of cooling. The phase change material cooling utilizes the phase change conversion of the phase change material to achieve the purpose of heat dissipation of the battery. The heat dissipation effect of the battery is the greatest, the phase change material is selected, and when the specific heat capacity of the selected phase change material is larger, the heat transfer coefficient is higher, the cooling effect under the same condition is better.
In the prior art, for example, patent document with publication number CN109830775B discloses a multistage heat dissipation system of a power battery pack based on coupling of planar heat pipes, liquid cooling and phase change energy storage heat conduction plates and a control method, the planar heat pipes are placed between battery monomers, the planar heat pipes are embedded into the phase change energy storage heat conduction plates to conduct heat rapidly, or a multistage heat dissipation refrigerator is adopted to dissipate heat of the battery, and the combination of the planar heat pipes, the liquid cooling and the phase change energy storage heat conduction plates mainly dissipates heat by heat conduction means and does not have a heating function in a low-temperature environment. Patent document with publication number of CN218939817U discloses an energy storage battery thermal management system, mainly comprising a battery box body, a sensor assembly, a battery rack and a battery management device, wherein a phase change material heat-conducting plate is arranged in the battery box body, a liquid cooling plate is covered above the box body, and the battery rack forms an air channel between any two adjacent battery box bodies. Patent document CN115411412a discloses a heat management system and method for an energy storage battery in a hybrid cooling mode, which performs heat dissipation by a combination of air cooling and liquid cooling, and performs heat dissipation by air cooling when the temperature of the battery system is normal, and performs heat dissipation by an air cooling and liquid cooling mode when the temperature is abnormal.
The heat dissipation mode of the energy storage battery system is mainly air cooling, liquid cooling, phase change material heat conduction or at least two heat dissipation modes. However, for heat dissipation of the energy storage battery system, on one hand, because specific heat and heat conductivity coefficient of air are smaller, air cooling cannot meet the heat dissipation of the energy storage system with larger capacitance, so that the problems of large temperature difference between battery packs at an inlet and an outlet, uneven heat dissipation of the battery and the like are caused, the heat dissipation requirement of the high heat flux density energy storage battery cannot be met, and the air cooling is generally direct cooling, so that the control of environmental humidity and cleanliness of the energy storage battery system is not facilitated; the liquid cooling system has complex structure, easy leakage of cooling medium, low economic benefit and higher difficulty in installation and subsequent maintenance technologies; meanwhile, the phase change material does not have heat dissipation capacity, and the phase change material needs to be used in combination with other heat dissipation modes, so that the heat dissipation is huge, complex and high in cost. On the other hand, because heating is needed in a low-temperature environment, the temperature of the energy storage battery system is difficult to be uniformly distributed by adopting an air heat source pump or an electric heating mode at present, the energy consumption is high, the efficiency is low, and the high-efficiency and long-term stable operation of the energy storage battery is not facilitated.
Disclosure of Invention
In view of the above, the invention provides an energy storage battery thermal management system and a working method thereof, which are used for solving the problems that the existing energy storage battery heat dissipation system in the prior art is difficult to realize uniform distribution of the temperature of the energy storage battery by combining air cooling, liquid cooling and heat conduction of a phase change material, and the comprehensive energy utilization rate is low. The invention provides an energy storage battery thermal management system which mainly comprises a heat pipe battery frame, a cooling unit, a photo-thermal heat storage unit and a heating unit; the heat pipe battery rack has strong heat conduction performance, and can rapidly conduct heat generated by the battery to a heat pipe condensation section, so that the uniform distribution of the temperature of the battery is realized; the heat pipe battery frame, the cooling unit and the photo-thermal heat storage unit are combined to dissipate heat through the natural cooling mode and the absorption type refrigerant cooling mode, so that indirect cooling of the battery is realized, the indirect cooling mode avoids direct contact of a heat exchange working medium with a battery system, and the influence of direct cooling on the environment humidity and cleanliness of the energy storage battery system can be reduced; by arranging the photo-thermal heat storage unit, the energy consumption of the thermal management system can be effectively reduced by adopting photo-thermal absorption refrigeration and photo-thermal heating; the heat storage device can control the temperature of the battery system by utilizing the waste heat and the waste heat, so that the comprehensive energy utilization rate is improved; through setting up heating unit to the mode through heat storage device heating heat pipe working medium provides the heat for energy storage battery under low temperature environment, guaranteed the evenly distributed of energy storage battery temperature, make the temperature of energy storage battery keep at the best use temperature interval.
In a first aspect, the present invention provides an energy storage battery thermal management system comprising:
the heat pipe battery frame comprises a heat pipe condensation section and a heat pipe evaporation section;
the absorption refrigerator and the fan are respectively connected to two sides of the heat pipe condensation section in the first direction, and the absorption refrigerator and/or the fan are/is suitable for forming a cooling unit to cool and dissipate heat of the heat pipe condensation section;
the heat storage device is connected to one side of the evaporation section of the heat pipe along the first direction and is suitable for storing heat; the heat storage device is connected with the absorption refrigerator to drive the absorption refrigerator to operate;
the solar heat collecting plate is connected with the heat storage device together to form a photo-thermal heat storage unit, and is suitable for collecting solar energy and storing heat in the heat storage device;
the heat pipe and the working medium pump are arranged in the heat storage device, the heating pipe and the working medium pump are suitable for forming a heating unit together with the heat storage device, one end of the working medium pump is connected with the heat pipe evaporation section, the other end of the working medium pump is connected with the heat storage device, and the working medium pump is suitable for driving the working medium of the heat pipe to circulate, so that the working medium of the heat pipe in the heat pipe evaporation section returns to the heat pipe evaporation section after being heated by the heat storage device.
The heat pipe battery frame is arranged, so that heat generated by the battery is quickly conducted to the condensation section of the heat pipe, and the uniform distribution of the temperature of the battery is realized; the absorption refrigerator and the fan are arranged to form a cooling unit, so that the condensation section of the heat pipe is cooled and radiated, and the heat storage device is arranged to drive the cooling unit to operate; the solar heat collecting plate and the heat storage device are connected together to form the photo-thermal heat storage unit, the cooling unit and the heat pipe battery frame can indirectly cool the battery system in a natural cooling mode and an absorption type refrigerant cooling mode, so that the direct contact between a heat exchange working medium and the battery system is avoided, the influence of direct cooling on the environment humidity and cleanliness of the energy storage battery system can be reduced, and the energy consumption of the heat management system can be effectively reduced; the heat storage device is used for controlling the temperature of the battery system by utilizing the waste heat and the waste heat, so that the comprehensive energy utilization rate is improved; through setting up heating pipe and working medium pump for heating pipe and working medium pump form heating unit jointly with the heat accumulation device, thereby provide the heat for the energy storage battery through the mode of heat accumulation device heating heat pipe working medium under low temperature environment, guaranteed that the temperature of energy storage battery keeps at the best use temperature interval.
In an alternative embodiment, the absorption refrigerator is connected with the condensing section of the heat pipe through a first pipeline; the first pipeline is provided with a first valve which is suitable for selectively communicating and/or at least partially communicating the absorption refrigerator with the condensing section of the heat pipe.
Through the arrangement, when the heat is dissipated under the condition of low air temperature, the absorption refrigerator can be closed, the fan is started, the heat dissipation requirement of the battery system can be met only by utilizing the natural cold source, and the system energy consumption only needs to drive the fan to rotate, so that the energy consumption is reduced.
In an alternative embodiment, the absorption refrigerator is connected with the fan through a second pipeline; the second pipeline is provided with a second valve which is suitable for selectively communicating and/or at least partially communicating the absorption refrigerator with the fan.
Through the arrangement, when the natural cold source can not meet the heat dissipation requirement of the battery system, the absorption type refrigerator can be started, and the absorption type refrigerator is driven by the heat storage device to dissipate heat of the battery system by adopting an absorption type refrigeration heat dissipation mode, wherein the heat storage device can collect heat through the solar heat collecting plate and can store waste heat such as industrial waste heat, and the heat storage device is beneficial to improving the comprehensive energy utilization rate while realizing indirect heat dissipation of the battery system.
In an alternative embodiment, the inlet end of the solar heat collecting plate is connected with the heat storage device through a third pipeline; the third pipeline is provided with a third valve, and the third valve is suitable for selectively communicating and/or at least partially communicating the inlet end of the solar heat collecting plate with the heat storage device;
the outlet end of the solar heat collecting plate is connected with the heat storage device through a fourth pipeline; the fourth pipeline is provided with a fourth valve, and the fourth valve is suitable for selectively communicating and/or at least partially communicating the outlet end of the solar heat collecting plate with the heat storage device.
Through such setting for heat accumulation device, solar panel, third pipeline, fourth pipeline, third valve and fourth valve constitute the photo-thermal heat storage unit jointly, not only can be used for driving the absorption refrigerator and dispel the heat to battery system, can also carry out photo-thermal heating, effectively reduced thermal management system's energy consumption.
In an alternative embodiment, the heat source inlet of the absorption refrigerator is connected with the heat storage device through a fifth pipeline; a fifth valve is arranged on the fifth pipeline, and the fifth valve is suitable for selectively communicating and/or at least partially communicating the heat source inlet of the absorption refrigerator with the heat storage device;
The heat source outlet of the absorption refrigerator is connected with the heat storage device through a sixth pipeline; a sixth valve is provided on the sixth conduit, the sixth valve being adapted to selectively communicate and/or at least partially communicate the heat source outlet of the absorption chiller with the heat storage device.
Through the arrangement, the heat storage device can selectively drive the absorption refrigerator, so that the switching between the natural cold source heat radiation mode and the absorption refrigeration heat radiation mode is realized.
In an alternative embodiment, one end of the working medium pump is connected with the heat storage device through a seventh pipeline; a seventh valve is arranged on the seventh pipeline and is suitable for selectively communicating the working medium pump with the heat storage device;
the other end of the working medium pump is connected with the evaporation section of the heat pipe through an eighth pipeline; an eighth valve is arranged on the eighth pipeline and is suitable for selectively communicating the working medium pump with the evaporation section of the heat pipe.
Through the arrangement, when the environmental temperature is too low, and the temperature of the battery system is lower than the optimal working temperature, the heat pipe working medium is heated through the heat storage device under the driving of the working medium pump, so that the heat pipe working medium is heated through the heat storage device and then returns to the evaporation section of the heat pipe, and the heat pipe working medium transfers heat to the energy storage battery through the wall surface of the battery accommodating shell, the uniform distribution of the temperature of the energy storage battery is ensured, and the temperature of the energy storage battery can be kept in an optimal use temperature range.
In an alternative embodiment, a plurality of battery accommodating shells are uniformly arranged in the heat pipe evaporation section, and the inner wall of each battery accommodating shell is suitable for being jointly enclosed to form a battery groove, and the battery groove is suitable for accommodating an energy storage battery;
a flow gap is formed between the outer walls of every two adjacent battery accommodating shells at intervals, and the flow gap is suitable for accommodating heat pipe working media.
By the arrangement, the heat pipe battery frame fully utilizes the heat conduction principle and the rapid heat transfer property of the phase change medium, and rapidly transfers the heat generated by the energy storage battery to the outside of the battery system; in addition, the heat pipe battery frame has good isothermicity when in work, and the temperature difference between different positions is very small, so that the heat pipe battery frame is very suitable for application scenes of the energy storage battery, which need rapid heat exchange and uniform heat exchange.
In an alternative embodiment, the energy storage battery thermal management system further comprises a temperature detection unit comprising one or more temperature sensors adapted to collect the temperature of the energy storage battery in real time;
the temperature detection unit is electrically and/or communicatively connected with the cooling unit, the photo-thermal heat storage unit and the heating unit.
Through setting up temperature detection unit to carry out real-time supervision to the temperature of energy storage battery, according to the temperature of the battery system that temperature detection unit gathered in real time, carry out the temperature control of operation in-process to thermal management system, thereby make the temperature of energy storage battery keep at the best temperature interval of using.
In an alternative embodiment, the level of heat pipe working medium in the heat pipe battery rack is higher than that of any battery groove.
Through such setting, can guarantee that all energy storage batteries in the battery jar all immerse in the heat pipe working medium completely, guarantee the temperature control effect to energy storage battery.
In an alternative embodiment, the heat pipe battery rack further comprises a heat pipe heat insulation section, wherein the heat pipe heat insulation section is arranged between the heat pipe condensation section and the heat pipe evaporation section.
By this arrangement, heat insulation is provided between the condensing section and the evaporating section of the heat pipe.
In an alternative embodiment, the heating unit further comprises a liquid storage tank arranged between the working medium pump and the evaporation section of the heat pipe, and the liquid storage tank is suitable for storing the working medium of the heat pipe.
In an alternative embodiment, the heat pipe working medium comprises water, carbon dioxide, an inert gas, and/or an organic working medium.
In an alternative embodiment, a ninth pipeline is further arranged on the heat storage device, and the ninth pipeline is suitable for connecting the heat storage device with an external low-grade heat energy source, so that the heat storage device stores and utilizes the external low-grade heat energy.
Through the arrangement, the purposes of waste heat and waste heat utilization are realized, and the comprehensive utilization rate of energy sources is improved.
In a second aspect, the present invention further provides a working method of the energy storage battery thermal management system, which includes:
the energy storage battery generates heat in the working process, and the heat is transferred to the liquid heat pipe working medium in the heat pipe evaporation section through the inner wall of the battery groove, so that the heat pipe working medium absorbs heat and evaporates into gas and flows to the heat pipe condensation section; radiating the energy storage battery by adopting a natural cold source radiating mode so as to keep the temperature of the energy storage battery in an optimal working range;
when the natural cold source cannot meet the heat dissipation requirement of the energy storage battery, an absorption refrigeration heat dissipation mode is adopted to dissipate heat of the energy storage battery, so that the temperature of the energy storage battery is kept in an optimal working interval;
when the temperature of the energy storage battery is lower than the optimal working temperature, the energy storage battery is heated by adopting a heating mode, so that the temperature of the energy storage battery is kept in the optimal working range.
In an alternative embodiment, the natural heat sink cooling mode includes:
the third valve and the fourth valve are opened, the first valve, the second valve, the fifth valve, the sixth valve, the seventh valve and the eighth valve are closed, so that heat generated by the energy storage battery is transferred to liquid heat pipe working medium in the heat pipe evaporation section through the wall surface of the battery groove in a heat conduction mode, the heat pipe working medium absorbs heat and evaporates to be converted into a gaseous state, the heat pipe condensation section condenses and releases heat, and outdoor air and the heat pipe condensation section generate forced convection heat under the drive of a fan to take away the heat generated by the condensation of the working medium;
The temperature detection unit is used for acquiring the real-time temperature of the energy storage battery, and the rotating speed of the fan is adjusted to control the temperature of the energy storage battery, so that the energy storage battery is in an optimal temperature range for working.
Through such setting, can make full use of natural cold source to energy storage battery indirect cooling, realize energy storage battery temperature's evenly distributed, not only avoided heat transfer working medium direct and battery system direct contact, can reduce direct cooling to energy storage battery system environmental humidity, the influence of cleanliness, be favorable to reducing the system energy consumption moreover.
In an alternative embodiment, employing an absorption refrigeration heat dissipation mode includes:
and closing the seventh valve and the eighth valve, and opening the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve, and driving the absorption refrigerator to provide cold for the energy storage battery through the heat storage device, wherein a heat source of the heat storage device comprises a solar heat collection plate for heat collection, low-grade heat energy for heat supply and/or electric heating.
Through such setting, on the one hand can combine photo-thermal heat accumulation and absorption refrigeration technology to energy storage battery indirect cooling, realize energy storage battery temperature's evenly distributed, on the other hand avoided heat transfer working medium direct and battery system direct contact, can reduce direct cooling to energy storage battery system environmental humidity, the influence of cleanliness, on the other hand improved comprehensive energy utilization, reduced energy consumption of energy storage battery thermal management system to the maximum extent.
In an alternative embodiment, employing the heating mode includes:
and closing the first valve, the second valve, the fifth valve and the sixth valve, opening the third valve, the fourth valve, the seventh valve and the eighth valve, and driving the heat pipe working medium through the working medium pump, so that the heat pipe working medium is heated through the heat storage device, and the heated heat pipe working medium reenters the heat pipe evaporation section to transfer heat to the energy storage battery.
Through such setting, can heat energy storage battery when the temperature is too low to realize energy storage battery temperature evenly distributed, be favorable to energy storage battery's high efficiency, long-term steady operation, can improve the comprehensive utilization ratio of energy simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an operating principle of a thermal management system for an energy storage battery according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a heat pipe battery rack of an energy storage battery thermal management system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating connection of a cooling unit of a thermal management system for an energy storage battery according to an embodiment of the present invention;
fig. 4 is a schematic connection diagram of a photo-thermal heat storage unit of an energy storage battery thermal management system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating connection of a heating unit of a thermal management system for an energy storage battery according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an operating principle of a heat storage device driving absorption chiller of an energy storage battery thermal management system according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating an operation principle of another thermal management system for an energy storage battery according to an embodiment of the present invention.
Reference numerals illustrate:
100. a heat pipe battery rack; 200. a cooling unit; 300. a photo-thermal heat storage unit; 400. a heating unit; 500. a temperature detection unit;
11. a heat pipe condensing section; 12. a heat pipe evaporation section; 13. a battery accommodating case; 130. a battery case; 14. an energy storage battery; 15. a heat pipe working medium; 16. a heat pipe heat insulation section; 17. a heat preservation layer; 18. a partition plate;
21. an absorption refrigerator; 22. a blower;
31. a heat storage device; 32. a solar heat collecting plate;
41. Heating pipes; 42. a working medium pump; 43. a liquid storage tank;
51. a first pipeline; 510. a first valve; 52. a second pipeline; 520. a second valve; 53. a third pipeline; 530. a third valve; 54. a fourth pipeline; 540. a fourth valve; 55. a fifth pipeline; 550. a fifth valve; 56. a sixth pipeline; 560. a sixth valve; 57. a seventh pipeline; 570. a seventh valve; 58. an eighth pipeline; 580. an eighth valve; 59. and a ninth pipeline.
Detailed Description
In order to solve the problems that the existing heat dissipation system of the energy storage battery is difficult to realize uniform distribution of the temperature of the energy storage battery in the prior art by combining air cooling, liquid cooling and heat conduction of a phase change material, and the comprehensive energy utilization rate is low, the invention provides the heat management system of the energy storage battery and the working method thereof. The energy storage battery thermal management system mainly comprises a heat pipe battery frame, a cooling unit, a photo-thermal heat storage unit and a heating unit; the heat pipe battery rack has strong heat conduction performance, and can rapidly conduct heat generated by the battery to a heat pipe condensation section, so that the uniform distribution of the temperature of the battery is realized; the heat pipe battery frame, the cooling unit and the photo-thermal heat storage unit are combined to dissipate heat through the natural cooling mode and the absorption type refrigerant cooling mode, so that indirect cooling of the battery is realized, the indirect cooling mode avoids direct contact of a heat exchange working medium with a battery system, and the influence of direct cooling on the environment humidity and cleanliness of the energy storage battery system can be reduced; by arranging the photo-thermal heat storage unit, the energy consumption of the thermal management system can be effectively reduced by adopting photo-thermal absorption refrigeration and photo-thermal heating; the heat storage device can control the temperature of the battery system by utilizing the waste heat and the waste heat, so that the comprehensive energy utilization rate is improved; through setting up heating unit to the mode through heat storage device heating heat pipe working medium provides the heat for energy storage battery under low temperature environment, guaranteed the evenly distributed of energy storage battery temperature, make the temperature of energy storage battery keep at the best use temperature interval.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiments of the present invention are described below with reference to fig. 1 to 7.
According to an embodiment of the present invention, in one aspect, there is provided an energy storage battery thermal management system including:
the heat pipe battery frame 100 comprises a heat pipe condensation section 11 and a heat pipe evaporation section 12;
the absorption refrigerator 21 and the fan 22 are respectively connected to two sides of the heat pipe condensation section 11 in the first direction, and the absorption refrigerator 21 and/or the fan 22 are/is suitable for forming a cooling unit 200 to cool and dissipate heat of the heat pipe condensation section 11;
a heat storage device 31 connected to one side of the heat pipe evaporation section 12 in the first direction, the heat storage device 31 being adapted to store heat; the heat storage device 31 is connected with the absorption refrigerator 21 to drive the absorption refrigerator 21 to operate;
A solar heat collecting plate 32, which is connected together with the heat storage device 31 to form a photo-thermal heat storage unit 300, the solar heat collecting plate 32 being adapted to collect solar energy and store heat in the heat storage device 31;
the heat pipe device comprises a heating pipe 41 and a working medium pump 42, wherein the heating pipe 41 is arranged in the heat storage device 31, the heating pipe 41 and the working medium pump 42 are suitable for forming a heating unit 400 together with the heat storage device 31, one end of the working medium pump 42 is connected with the heat pipe evaporation section 12, the other end of the working medium pump 42 is connected with the heat storage device 31, and the working medium pump 42 is suitable for driving the heat pipe working medium 15 to circulate, so that the heat pipe working medium 15 in the heat pipe evaporation section 12 is heated by the heat storage device 31 and then returns to the heat pipe evaporation section 12.
It should be noted that, the heat pipe battery frame 100 may be made of metal materials such as copper, aluminum, carbon steel, stainless steel, or a composite material; referring to fig. 2, the heat pipe battery rack 100 mainly includes a heat pipe condensation section 11, a heat pipe evaporation section 12, a battery accommodating housing 13, a heat pipe working medium 15 and a heat pipe insulation section 16, the heat pipe battery rack 100 is used for packaging batteries, the heat pipe battery rack 100 has strong heat conducting performance, and can quickly conduct heat generated by the batteries to the heat pipe condensation section 11 to realize uniform distribution of battery temperature, wherein the heat pipe working medium 15 is filled in the heat pipe evaporation section 12, and the heat pipe working medium 15 can be carbon dioxide and/or inert gas, so that a certain flame retardant and fire-fighting effect can be achieved; the cross section of the condensing section 11 of the heat pipe can be round, square, polygonal, streamline or special-shaped structure, and in the specific implementation process, the heat exchange efficiency can be increased by adding fins, porous structures and lattice structures.
It should be noted that, the heat storage device 31 and the solar heat collecting plate 32 may form the photo-thermal heat storage unit 300 together, and the energy consumption of the thermal management system may be effectively reduced by adopting photo-thermal absorption refrigeration and photo-thermal heating; the heat storage device 31 may also form other heat storage units with other low-grade heat energy sources, for example, the heat storage device 31 may store waste heat such as industrial waste heat, or store heat generated by valley electricity and wind-solar energy waste electricity heating, so as to control the temperature of the battery system, thereby being beneficial to improving the comprehensive energy utilization rate.
It will be appreciated that "selectively communicating" refers to opening or closing of a valve and switching between the two states, and "at least partially communicating" refers to a state in which the flow area of the valve is greater than zero.
According to the energy storage battery thermal management system provided by the embodiment, the heat pipe battery frame 100 is arranged, so that heat generated by a battery is quickly conducted to the heat pipe condensation section 11, and the uniform distribution of the battery temperature is realized; the absorption refrigerator 21 and the fan 22 are arranged to form a cooling unit 200, so that the heat pipe condensation section 11 is cooled and radiated, and the heat storage device 31 is arranged to drive the cooling unit 200 to operate; the solar heat collecting plate 32 and the heat storage device 31 are arranged to be connected together to form the photo-thermal heat storage unit 300, the cooling unit 200 and the heat pipe battery frame 100 can indirectly cool the battery system in a natural cooling mode and an absorption type refrigerant cooling mode, so that the direct contact of a heat exchange working medium with the battery system is avoided, the influence of direct cooling on the environmental humidity and cleanliness of the energy storage battery system can be reduced, and the energy consumption of a heat management system can be effectively reduced; the heat storage device 31 utilizes the waste heat and the waste heat to control the temperature of the battery system, so that the comprehensive energy utilization rate is improved; by arranging the heating pipe 41 and the working medium pump 42, the heating pipe 41, the working medium pump 42 and the heat storage device 31 together form the heating unit 400, so that heat is provided for the energy storage battery in a mode of heating the heat pipe working medium 15 by the heat storage device 31 in a low-temperature environment, and the temperature of the energy storage battery is ensured to be kept in an optimal use temperature range.
It is worth to be noted that, the heat management system for the energy storage battery provided by the embodiment has the advantages that most parts are non-transmission parts, the reliability is high, the service life is long, and the noise is small in the operation process.
In one embodiment, referring to fig. 1 and 3, the cooling unit 200 includes an absorption chiller 21, a fan 22, a first line 51, a second line 52, a first valve 510, and a second valve 520; the absorption refrigerator 21 is connected with the heat pipe condensation section 11 through a first pipeline 51; the first conduit 51 is provided with a first valve 510, the first valve 510 being adapted to selectively communicate and/or at least partially communicate the absorption chiller 21 with the heat pipe condensing zone 11; when the heat is dissipated under the condition of low air temperature, the absorption refrigerator 21 can be closed, the fan 22 is started, and the heat dissipation requirement of the battery system can be met only by utilizing a natural cold source; specifically, the temperature of the battery system can be controlled by adjusting the rotation speed of the fan 22 according to the real-time monitoring of the temperature of the battery system, so that the battery system is in an optimal temperature range, and the natural cold source heat dissipation mode fully utilizes the natural cold source, and in the mode, the energy consumption of the system only needs to drive the fan 22 to rotate, thereby being beneficial to reducing the energy consumption.
In one embodiment, referring to fig. 1 and 3, the absorption chiller 21 is connected to the fan 22 through a second pipeline 52; a second valve 520 is provided in the second conduit 52, the second valve 520 being adapted to selectively communicate and/or at least partially communicate the absorption chiller 21 with the blower 22; when the natural cold source cannot meet the heat dissipation requirement of the battery system, the absorption refrigerator 21 can be started, the absorption refrigerator 21 is driven by the heat storage device 31, and the battery system is dissipated by adopting an absorption refrigeration heat dissipation mode, wherein the heat storage device 31 can collect heat through the solar heat collection plate 32 and can store waste heat such as industrial waste heat, and the heat storage device is beneficial to improving the comprehensive energy utilization rate while realizing indirect heat dissipation of the battery system.
In one embodiment, referring to fig. 1 and 4, the inlet end of the solar heat collecting plate 32 is connected to the heat storage device 31 through a third pipe 53; the third valve 530 is provided on the third pipe 53, and the third valve 530 is adapted to selectively communicate and/or at least partially communicate the inlet end of the solar collector plate 32 with the heat storage device 31; the outlet end of the solar heat collecting plate 32 is connected with the heat storage device 31 through a fourth pipeline 54; the fourth valve 540 is provided on the fourth pipe 54, and the fourth valve 540 is adapted to selectively communicate and/or at least partially communicate the outlet end of the solar collector plate 32 with the heat storage device 31;
In this embodiment, the heat storage device 31, the solar heat collecting plate 32, the third pipeline 53, the fourth pipeline 54, the third valve 530 and the fourth valve 540 together form the photo-thermal heat storage unit 300, which not only can be used for driving the absorption refrigerator 21 to dissipate heat of the battery system, but also can perform photo-thermal heating, thereby effectively reducing the energy consumption of the thermal management system.
In one embodiment, as shown in fig. 1 and 6, the heat source inlet of the absorption chiller 21 is connected to the heat storage apparatus 31 via a fifth line 55; a fifth valve 550 is provided on the fifth line 55, the fifth valve 550 being adapted to selectively communicate and/or at least partially communicate the heat source inlet of the absorption chiller 21 with the heat storage apparatus 31; the heat source outlet of the absorption refrigerator 21 is connected with the heat storage device 31 through a sixth pipeline 56; a sixth valve 560 is provided on the sixth conduit 56, the sixth valve 560 being adapted to selectively communicate and/or at least partially communicate the heat source outlet of the absorption chiller 21 with the heat storage apparatus 31;
in this embodiment, the heat storage device 31 selectively drives the absorption refrigerator 21 by controlling the fifth valve 550 and the sixth valve 560 to switch between the natural heat sink heat dissipation mode and the absorption refrigeration heat dissipation mode.
In one embodiment, as shown in connection with fig. 1 and 5, the heating unit 400 includes a heating pipe 41, a working medium pump 42, a heat storage device 31, a seventh pipe 57, an eighth pipe 58, a seventh valve 570, and an eighth valve 580; one end of the working medium pump 42 is connected with the heat storage device 31 through a seventh pipeline 57; a seventh valve 570 is provided on the seventh conduit 57, the seventh valve 570 being adapted to selectively communicate the working fluid pump 42 with the heat storage device 31; the other end of the working medium pump 42 is connected with the heat pipe evaporation section 12 through an eighth pipeline 58; an eighth valve 580 is provided on the eighth conduit 58, the eighth valve 580 being adapted to selectively communicate the working fluid pump 42 with the heat pipe evaporator end 12;
in this embodiment, when the environmental temperature is too low, resulting in that the temperature of the battery system is lower than the optimal working temperature, the heat storage device 31 heats the heat pipe working medium 15 under the driving of the working medium pump 42, so that the heat pipe working medium 15 is heated by the heat storage device 31 and then returns to the heat pipe evaporation section 12, and the heat pipe working medium 15 transfers heat to the energy storage battery 14 through the wall surface of the battery accommodating housing 13, thereby ensuring the uniform distribution of the temperature of the energy storage battery 14, and keeping the temperature of the energy storage battery 14 in the optimal use temperature range.
In one embodiment, as shown in fig. 2, a plurality of battery accommodating cases 13 are uniformly arranged in the heat pipe evaporation section 12, and the inner wall of each battery accommodating case 13 is suitable for being enclosed together to form a battery groove 130, and the battery groove 130 is suitable for accommodating the energy storage battery 14; a flow gap is formed between the outer walls of every two adjacent battery accommodating shells 13 at intervals, and the flow gap is suitable for accommodating a heat pipe working medium 15;
In this embodiment, the heat pipe battery frame 100 may be made of copper, the battery slots 130 may be disposed in the heat pipe evaporation section 12 according to the number and shape of the energy storage batteries, and the number and arrangement of the heat pipe condensation sections 11 may be disposed according to the heat dissipation capacity of the energy storage batteries and the layout of the battery slots 130, so that after the structural design of the heat pipe battery frame 100 is completed, the manufacturing of the heat pipe battery frame 100 may be completed by adopting methods such as welding, additive manufacturing, casting, machining, etc. The heat pipe battery frame 100 provided by the embodiment fully utilizes the heat conduction principle and the rapid heat transfer property of the phase change medium to rapidly transfer the heat generated by the energy storage battery to the outside of the battery system; in addition, the heat pipe battery frame 100 has good isothermicity in operation, and the temperature difference between different positions is small, so that the heat pipe battery frame is very suitable for application scenes in which the energy storage battery needs rapid heat exchange and uniform heat exchange.
In one embodiment, referring to fig. 1, the energy storage battery thermal management system further includes a temperature detection unit 500, where the temperature detection unit 500 includes one or more temperature sensors adapted to collect the temperature of the energy storage battery 14 in real time; the temperature detection unit 500 is electrically and/or communicatively connected with the cooling unit 200, the photo-thermal heat storage unit 300, and the heating unit 400; by arranging the temperature detection unit 500, the temperature of the energy storage battery 14 is monitored in real time, and the temperature of the thermal management system is controlled in the operation process according to the temperature of the battery system acquired by the temperature detection unit 500 in real time, so that the temperature of the energy storage battery is kept in an optimal use temperature interval.
In one embodiment, as shown in fig. 1, the liquid level of the heat pipe working medium 15 in the heat pipe battery rack 100 is higher than that of any battery groove 130, so as to ensure that all the energy storage batteries in the battery grooves 130 are completely immersed in the heat pipe working medium 15, and ensure the temperature control effect on the energy storage batteries.
In one embodiment, referring to fig. 2, the heat pipe battery rack 100 further includes a heat pipe insulation section 16, wherein the heat pipe insulation section 16 is disposed between the heat pipe condensation section 11 and the heat pipe evaporation section 12, so as to insulate heat between the heat pipe condensation section 11 and the heat pipe evaporation section 12; specifically, a partition 18 may be disposed between the heat pipe condensation section 11 and the heat pipe evaporation section 12 to isolate the heat pipe condensation section 11 from the heat pipe evaporation section 12.
Further, the heat pipe battery frame 100 can be covered by the heat insulation layer 17, so that heat dissipation is reduced, and temperature control of the battery system is facilitated.
In one embodiment, referring to fig. 1 and 5, the heating unit 400 further includes a liquid storage tank 43, where the liquid storage tank 43 is disposed between the working fluid pump 42 and the heat pipe evaporation section 12, and the liquid storage tank 43 is adapted to store the heat pipe working fluid 15.
In one embodiment, heat pipe working fluid 15 comprises water, carbon dioxide, an inert gas, and/or an organic working fluid.
Optionally, carbon dioxide can be selected as a working medium of the heat pipe; in a specific implementation process, after the manufactured heat pipe battery frame 100 is vacuumized, carbon dioxide working medium is filled into the heat pipe battery frame 100 according to the calculated filling amount.
In an embodiment, referring to fig. 7, a ninth pipeline 59 is further disposed on the heat storage device 31, where the ninth pipeline 59 is adapted to connect the heat storage device 31 with an external low-grade heat energy source, so that the heat storage device 31 stores and utilizes the external low-grade heat energy, and the low-grade heat energy can be boiler steam, industrial waste heat and waste heat, so as to achieve the purpose of waste heat and waste heat utilization, and improve the comprehensive utilization rate of energy.
According to an embodiment of the present invention, in another aspect, there is further provided a method for operating the thermal management system for an energy storage battery, including:
the energy storage battery 14 generates heat in the working process, and transfers the heat to the liquid heat pipe working medium 15 in the heat pipe evaporation section 12 through the inner wall of the battery groove 130, so that the heat pipe working medium 15 absorbs heat, evaporates into gas and flows to the heat pipe condensation section 11; radiating the energy storage battery 14 by adopting a natural cold source radiating mode so as to keep the temperature of the energy storage battery 14 in an optimal working interval;
When the natural cold source cannot meet the heat dissipation requirement of the energy storage battery 14, an absorption refrigeration heat dissipation mode is adopted to dissipate heat of the energy storage battery 14 so as to keep the temperature of the energy storage battery 14 in an optimal working interval;
when the temperature of the energy storage battery 14 is lower than the optimal operation temperature, the heating mode is used to heat the energy storage battery 14 so as to keep the temperature of the energy storage battery 14 in the optimal operation interval.
In one embodiment, the natural cooling source heat dissipation mode comprises:
the third valve 530 and the fourth valve 540 are opened, the first valve 510, the second valve 520, the fifth valve 550, the sixth valve 560, the seventh valve 570 and the eighth valve 580 are closed, so that heat generated by the energy storage battery 14 is transferred to the liquid heat pipe working medium 15 in the heat pipe evaporation section 12 through the wall surface of the battery tank 130 in a heat conduction mode, the heat pipe working medium 15 absorbs heat and evaporates to be changed into a gaseous state, the heat pipe condensation section 11 condenses and releases heat, and outdoor air and the heat pipe condensation section 11 generate forced convection heat exchange under the drive of the fan 22 to take away heat generated by the working medium condensation;
the temperature detection unit 500 is used for acquiring the real-time temperature of the energy storage battery 14, and the rotating speed of the fan 22 is adjusted to control the temperature of the energy storage battery 14, so that the energy storage battery 14 is in an optimal temperature range for working.
The method can fully utilize the natural cold source to indirectly cool the energy storage battery, realize the uniform distribution of the temperature of the energy storage battery, avoid the direct contact of the heat exchange working medium and the battery system, reduce the influence of direct cooling on the environment humidity and the cleanliness of the energy storage battery system, and be beneficial to reducing the energy consumption of the system.
In one embodiment, employing an absorption refrigeration heat dissipation mode includes:
the seventh valve 570 and the eighth valve 580 are closed, the first valve 510, the second valve 520, the third valve 530, the fourth valve 540, the fifth valve 550 and the sixth valve 560 are opened, and the absorption refrigerator 21 is driven by the heat storage device 31 to provide cold for the energy storage battery 14, wherein the heat source of the heat storage device 31 comprises a solar heat collecting plate 32 for heat collection, a low-grade heat energy source for heat supply and/or electric heating.
According to the method, on one hand, the light and heat storage and absorption refrigeration technology can be combined to indirectly cool the energy storage battery, so that the temperature of the energy storage battery is uniformly distributed, on the other hand, the direct contact between a heat exchange working medium and a battery system is avoided, the influence of direct cooling on the environment humidity and cleanliness of the energy storage battery system can be reduced, on the other hand, the comprehensive energy utilization rate is improved, and the energy consumption of the energy storage battery thermal management system is reduced to the greatest extent.
In one embodiment, employing the heating mode includes:
the first valve 510, the second valve 520, the fifth valve 550 and the sixth valve 560 are closed, the third valve 530, the fourth valve 540, the seventh valve 570 and the eighth valve 580 are opened, the heat pipe working medium 15 is driven by the working medium pump 42, so that the heat pipe working medium 15 is heated by the heat storage device 31, the heated heat pipe working medium 15 enters the heat pipe evaporation section 12 again to transfer heat to the energy storage battery 14, wherein the heat source of the heat storage device 31 comprises a solar heat collecting plate 32 for heat collection, a low-grade heat energy source for heat supply and/or electric heating.
The method can heat the energy storage battery 14 when the temperature is too low, thereby realizing the uniform temperature distribution of the energy storage battery 14, being beneficial to the high-efficiency and long-term stable operation of the energy storage battery 14 and improving the comprehensive utilization rate of energy.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (17)
1. An energy storage battery thermal management system, comprising:
The heat pipe battery frame (100) comprises a heat pipe condensation section (11) and a heat pipe evaporation section (12);
an absorption refrigerator (21) and a fan (22) which are respectively connected to two sides of the heat pipe condensation section (11) in the first direction, wherein the absorption refrigerator (21) and/or the fan (22) are/is suitable for forming a cooling unit (200) to cool and dissipate heat of the heat pipe condensation section (11);
a heat storage device (31) connected to one side of the heat pipe evaporation section (12) in a first direction, the heat storage device (31) being adapted to store heat; the heat storage device (31) is connected with the absorption refrigerator (21) to drive the absorption refrigerator (21) to operate;
a solar heat collecting plate (32) connected together with the heat storage device (31) to form a photo-thermal heat storage unit (300), the solar heat collecting plate (32) being adapted to collect solar energy and store heat in the heat storage device (31);
heating pipe (41) and working medium pump (42), heating pipe (41) are built-in heat storage device (31), heating pipe (41) with working medium pump (42) are suitable for with heat storage device (31) jointly form heating unit (400), one end of working medium pump (42) with heat pipe evaporation zone (12) are connected, the other end with heat storage device (31) are connected, working medium pump (42) are suitable for driving heat pipe working medium (15) circulation, so that heat pipe working medium (15) in heat pipe evaporation zone (12) are via heat storage device (31) heat back in heat pipe evaporation zone (12).
2. The energy storage battery thermal management system according to claim 1, wherein the absorption chiller (21) is connected to the heat pipe condensation section (11) by a first pipe (51); the first pipeline (51) is provided with a first valve (510), and the first valve (510) is suitable for selectively communicating and/or at least partially communicating the absorption refrigerator (21) with the heat pipe condensation section (11).
3. The energy storage battery thermal management system according to claim 2, wherein the absorption chiller (21) is connected to the fan (22) by a second conduit (52); a second valve (520) is arranged on the second pipeline (52), and the second valve (520) is suitable for selectively communicating and/or at least partially communicating the absorption refrigerator (21) with the fan (22).
4. The energy storage battery thermal management system according to claim 1, wherein an inlet end of the solar collector plate (32) is connected to the heat storage device (31) by a third pipe (53); a third valve (530) is arranged on the third pipeline (53), and the third valve (530) is suitable for selectively communicating and/or at least partially communicating the inlet end of the solar heat collecting plate (32) with the heat storage device (31);
The outlet end of the solar heat collecting plate (32) is connected with the heat storage device (31) through a fourth pipeline (54); a fourth valve (540) is arranged on the fourth pipeline (54), and the fourth valve (540) is suitable for selectively communicating and/or at least partially communicating the outlet end of the solar heat collecting plate (32) with the heat storage device (31).
5. The energy storage battery thermal management system according to claim 1, characterized in that the heat source inlet of the absorption chiller (21) is connected to the heat storage device (31) by a fifth line (55); a fifth valve (550) is arranged on the fifth pipeline (55), and the fifth valve (550) is suitable for selectively communicating and/or at least partially communicating the heat source inlet of the absorption refrigerator (21) with the heat storage device (31);
the heat source outlet of the absorption refrigerator (21) is connected with the heat storage device (31) through a sixth pipeline (56); a sixth valve (560) is arranged on the sixth pipeline (56), and the sixth valve (560) is suitable for selectively communicating and/or at least partially communicating the heat source outlet of the absorption refrigerator (21) with the heat storage device (31).
6. The energy storage battery thermal management system according to claim 1, characterized in that one end of the working fluid pump (42) is connected to the heat storage device (31) through a seventh pipe (57); a seventh valve (570) is arranged on the seventh pipeline (57), and the seventh valve (570) is suitable for selectively communicating the working medium pump (42) with the heat storage device (31);
The other end of the working medium pump (42) is connected with the heat pipe evaporation section (12) through an eighth pipeline (58); an eighth valve (580) is arranged on the eighth pipeline (58), and the eighth valve (580) is suitable for selectively communicating the working medium pump (42) with the heat pipe evaporation section (12).
7. The thermal management system of an energy storage battery according to any one of claims 1-6, wherein a plurality of battery accommodating cases (13) are uniformly arranged in the heat pipe evaporation section (12), the inner wall of each battery accommodating case (13) is suitable for being jointly enclosed to form a battery groove (130), and the battery groove (130) is suitable for accommodating an energy storage battery (14);
a flow gap is formed between the outer walls of every two adjacent battery accommodating shells (13), and the flow gap is suitable for accommodating heat pipe working media (15).
8. The energy storage battery thermal management system according to claim 7, further comprising a temperature detection unit (500), the temperature detection unit (500) comprising one or more temperature sensors adapted to collect the temperature of the energy storage battery (14) in real time;
the temperature detection unit (500) is electrically and/or communicatively connected to the cooling unit (200), the photo-thermal heat storage unit (300) and the heating unit (400).
9. The energy storage battery thermal management system of claim 7, wherein a level of heat pipe working fluid (15) within the heat pipe battery rack (100) is higher than any of the battery slots (130).
10. The energy storage battery thermal management system of any of claims 1-6, wherein the heat pipe battery rack (100) further comprises a heat pipe insulation section (16), the heat pipe insulation section (16) being disposed between the heat pipe condensation section (11) and the heat pipe evaporation section (12).
11. The energy storage battery thermal management system of any of claims 1-6, wherein the heating unit (400) further comprises a liquid reservoir (43), the liquid reservoir (43) being disposed between the working fluid pump (42) and the heat pipe evaporation section (12), the liquid reservoir (43) being adapted to store the heat pipe working fluid (15).
12. The energy storage battery thermal management system according to any of claims 1-6, wherein the heat pipe working fluid (15) comprises water, carbon dioxide, an inert gas and/or an organic working fluid.
13. The energy storage battery thermal management system according to any of the claims 1-6, characterized in that a ninth pipeline (59) is further provided on the heat storage device (31), which ninth pipeline (59) is adapted to connect the heat storage device (31) with an external low grade heat energy source, such that the heat storage device (31) stores and utilizes external low grade heat energy.
14. A method of operating an energy storage battery thermal management system as claimed in any one of claims 1 to 13, comprising:
the energy storage battery (14) generates heat in the working process, and the heat is transferred to the liquid heat pipe working medium (15) in the heat pipe evaporation section (12) through the inner wall of the battery groove (130), so that the heat pipe working medium (15) absorbs heat and evaporates into gas and flows to the heat pipe condensation section (11); radiating the energy storage battery (14) by adopting a natural cold source radiating mode so as to keep the temperature of the energy storage battery (14) in an optimal working interval;
when the natural cold source cannot meet the heat dissipation requirement of the energy storage battery (14), an absorption refrigeration heat dissipation mode is adopted to dissipate heat of the energy storage battery (14) so as to keep the temperature of the energy storage battery (14) in an optimal working interval;
when the temperature of the energy storage battery (14) is lower than the optimal working temperature, the energy storage battery (14) is heated by adopting a heating mode so as to keep the temperature of the energy storage battery (14) in the optimal working range.
15. The method of claim 14, wherein the employing a natural cooling heat dissipation mode comprises:
the third valve (530) and the fourth valve (540) are opened, the first valve (510), the second valve (520), the fifth valve (550), the sixth valve (560), the seventh valve (570) and the eighth valve (580) are closed, so that heat generated by the energy storage battery (14) is transferred to the liquid heat pipe working medium (15) in the heat pipe evaporation section (12) in a heat conduction mode through the wall surface of the battery groove (130), the heat pipe working medium (15) absorbs heat and evaporates to be changed into a gaseous state, condensation and heat release are carried out in the heat pipe condensation section (11), and forced convection heat exchange is carried out between outdoor air and the heat pipe condensation section (11) under the driving of the fan (22) to take away the heat generated by condensation;
The temperature detection unit (500) is used for acquiring the real-time temperature of the energy storage battery (14), and the rotating speed of the fan (22) is adjusted to control the temperature of the energy storage battery (14), so that the energy storage battery (14) is in an optimal temperature range for working.
16. The method of claim 14, wherein the employing an absorption refrigeration heat dissipation mode comprises:
closing a seventh valve (570) and an eighth valve (580), and opening a first valve (510), a second valve (520), a third valve (530), a fourth valve (540), a fifth valve (550) and a sixth valve (560), and driving an absorption refrigerator (21) through a heat storage device (31) to provide cold energy for an energy storage battery (14), wherein a heat source of the heat storage device (31) comprises a solar heat collecting plate (32) for heat collection, low-grade heat energy source for heat supply and/or electric heating.
17. The method of any one of claims 14-16, wherein the employing a heating mode comprises:
closing the first valve (510), the second valve (520), the fifth valve (550) and the sixth valve (560), opening the third valve (530), the fourth valve (540), the seventh valve (570) and the eighth valve (580), and driving the heat pipe working medium (15) through the working medium pump (42), so that the heat pipe working medium (15) is heated by the heat storage device (31), and the heated heat pipe working medium (15) reenters the heat pipe evaporation section (12) to transfer heat to the energy storage battery (14).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119173014A (en) * | 2024-11-15 | 2024-12-20 | 中国科学院长春光学精密机械与物理研究所 | A heat dissipation design method and structure for a space camera electrical stand-alone system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119173014A (en) * | 2024-11-15 | 2024-12-20 | 中国科学院长春光学精密机械与物理研究所 | A heat dissipation design method and structure for a space camera electrical stand-alone system |
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