CN117317467A - Energy storage battery module combined heat dissipation device and control method thereof - Google Patents

Energy storage battery module combined heat dissipation device and control method thereof Download PDF

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Publication number
CN117317467A
CN117317467A CN202311330730.3A CN202311330730A CN117317467A CN 117317467 A CN117317467 A CN 117317467A CN 202311330730 A CN202311330730 A CN 202311330730A CN 117317467 A CN117317467 A CN 117317467A
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CN
China
Prior art keywords
battery
module
cover plate
upper cover
battery module
Prior art date
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Pending
Application number
CN202311330730.3A
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Chinese (zh)
Inventor
吴琼
赵磊
林建平
杨博
郗航
程文姬
马月
王淑娟
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Xian Thermal Power Research Institute Co Ltd
Clean Energy Branch of Huaneng Zhejiang Energy Development Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
Clean Energy Branch of Huaneng Zhejiang Energy Development Co Ltd
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Application filed by Xian Thermal Power Research Institute Co Ltd, Clean Energy Branch of Huaneng Zhejiang Energy Development Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN202311330730.3A priority Critical patent/CN117317467A/en
Publication of CN117317467A publication Critical patent/CN117317467A/en
Pending legal-status Critical Current

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • 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
    • 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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a combined heat dissipation device of an energy storage battery module and a control method thereof, wherein the combined heat dissipation device comprises a plurality of battery pack frames, the plurality of battery pack frames are sequentially arranged at intervals from top to bottom, the battery modules are correspondingly arranged in each battery pack frame, an upper cover plate is arranged above each battery module, water pipelines are arranged in the upper cover plate, the water pipelines between the adjacent upper cover plates are connected through inter-module water pipes, one end of the water pipeline of the upper cover plate on the top layer is respectively connected with a cold water tank and a hot water tank through a liquid storage tank, and the other end of the water pipeline on the bottom layer is connected with a liquid discharge tank. The invention is used for controlling the temperature of the energy storage battery at a module level, ensures that the working temperature of the battery is controlled in an optimal working temperature range, and can improve the cycle service life of the battery while avoiding thermal runaway caused by overheating of the battery.

Description

Energy storage battery module combined heat dissipation device and control method thereof
Technical Field
The invention belongs to the technical field of battery heat dissipation, and particularly relates to an energy storage battery module combined heat dissipation device and a control method thereof.
Background
In recent years, energy storage technology is applied to all links of power generation, power transmission, power distribution and power utilization of a power system on a large scale, and electrochemical energy storage technology becomes the energy storage technology with the fastest growth of installed capacity in the current power energy storage field due to the advantages of high energy density, stable discharge, good cycle performance and the like. However, a plurality of fires of electrochemical energy storage power stations at home and abroad bring about general attention to the safety of energy storage systems. The fire safety problem of the energy storage system becomes a bottleneck problem for restricting the large-scale popularization of the electrochemical energy storage. Early energy storage power station safety management basically adopts a gas fire extinguishing system with a pipe network totally submerged, and in recent two years, the inventor realizes that the fire disaster of an electrochemical energy storage battery is quite different from the common fire disaster, the thermal runaway of the battery is an irresistible process, once the thermal runaway battery generates a large amount of heat, and when the heat cannot be effectively dissipated, the thermal runaway is aggravated, and even the combustion and explosion can be caused. The energy storage power stations all need the monitoring system to detect temperature abnormality so as to realize the fire extinguishing function.
There are two main reasons for thermal runaway of energy storage cells:
1. internal causes, such as defects in the battery cells introduced during the manufacturing process of the battery, or aging of the battery during long-term use due to charge-discharge regimes and environmental factors, dendrite lithium is generated in the battery cells, and the presence of dendrite lithium triggers an internal short circuit in the battery.
2. External causes such as electricity and thermal shock from the outside of the battery act on the battery body to cause irreversible exothermic reactions inside the battery.
At present, no good inhibition measure is provided for the thermal runaway of the battery, and the thermal runaway can only be warned or the fire can be extinguished by adopting a pipe network total flooding mode, so that the thermal runaway can not be prevented. Manufacturers have proposed to perform temperature control by adopting an air cooling or liquid cooling mode, most of air cooling is to install an air conditioner in an energy storage battery compartment, the refrigerating effect of the mode is unbalanced, the temperature of a region or a battery close to the air conditioner is proper, the temperature of a battery far away from the air conditioner is high, the air cooling adopts the battery compartment for air conditioning refrigeration, the refrigeration is not uniform enough, the management is not fine enough, and the occurrence of thermal runaway of an early battery caused by working overheat cannot be prevented; the water cooling scheme mostly lays the water cooling pipe in electric core bottom, and the high temperature area of battery work is battery top half in fact, but because there is the existence of utmost point post and aluminium polar plate hardly walk the water cooling pipe in upper portion, the radiating effect is not good.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a combined heat dissipation device of an energy storage battery module and a control method thereof, wherein a combined constant temperature mode is adopted to prevent the occurrence of thermal runaway of a battery caused by overhigh temperature, ensure that the battery works at an optimal working temperature, prolong the service life of the battery and solve the technical problem that the battery in cold areas cannot be used due to overhigh temperature.
The invention adopts the following technical scheme:
the utility model provides an energy storage battery module combination heat abstractor, includes battery pack frame, and battery pack frame sets up the multilayer from last interval in proper order extremely down, corresponds in every layer of battery pack frame and installs battery module, and battery module's top is provided with the upper cover plate, is provided with the water piping in the upper cover plate, and the water piping between the adjacent upper cover plate passes through water piping connection between the module, and cold water tank and hot-water tank are connected respectively through the reservoir to water piping one end of top layer upper cover plate, and liquid discharge tank is connected to the other end of bottom water piping.
Specifically, a booster pump is arranged between the water pipeline of the top upper cover plate and the liquid storage tank.
Specifically, corresponding booster pumps are respectively arranged between the liquid storage tank and the cold water tank and between the liquid storage tank and the hot water tank.
Further, corresponding electromagnetic valves are respectively arranged between the liquid storage tank and the cold water tank as well as between the liquid storage tank and the hot water tank.
Specifically, the battery module is formed by connecting a plurality of battery cells in series, and each battery cell is connected with the BMU.
Specifically, the number of layers of the battery pack frame is 7-9.
Specifically, one side of the upper cover plate is provided with a module constant temperature control module, and the other side of the upper cover plate is provided with a plurality of flow equalizing fans.
Further, the module constant temperature control module comprises a battery cell temperature detection module, an environment temperature detection module and a temperature controller.
Specifically, the water pipeline is in a zigzag structure.
According to the control method of the combined heat dissipating device of the energy storage battery module, when the working temperature of the battery core in the battery module is 10-28 ℃ or the environment temperature is 10-28 ℃, the flow equalizing fan and the water pipeline arranged on the upper cover plate do not work;
when the working temperature of the battery core in the battery module exceeds 28 ℃ or the ambient temperature exceeds 28 ℃, a flow equalizing fan arranged on the upper cover plate is started, and the water pipeline does not work;
when the working temperature of the battery core in the battery module exceeds 35 ℃ or the ambient temperature is more than 30 ℃, cold water is introduced into a water pipeline arranged on the upper cover plate, and the flow equalizing fan is kept on;
when the working temperature of the battery core in the battery module is lower than 28 ℃ and the ambient temperature is lower than 30 ℃, closing a water closing pipeline arranged on the cover plate, and starting the flow equalizing fan;
when the working temperature of the battery core in the battery module is lower than 10 ℃ or the ambient temperature is 10 ℃, hot water is introduced into a water pipeline arranged on the upper cover plate, and the flow equalizing fan is kept on until the temperature is 20 ℃, and then the operation is stopped.
Compared with the prior art, the invention has at least the following beneficial effects:
the combined heat dissipation device of the energy storage battery module ensures that the energy storage module works at the optimal environment temperature, and the service life of the battery is prolonged; the battery module is cooled by adopting a grading temperature control mode when the temperature is too high, and the environment temperature can be increased when the temperature is low, so that the battery can work at the optimal working temperature; the problem that the battery is out of control or the service life is reduced due to the fact that the ambient temperature or the working temperature of the battery is too high or too low can be effectively prevented.
Furthermore, a pressurizing pump is arranged between the water pipeline and the liquid storage tank, so that cold water or hot water in the three-way liquid storage tank is pumped into the water pipeline of the upper cover plate, and the battery works in a constant temperature range. The working environment of the battery is ensured, and the service life of the battery is prolonged.
Furthermore, a pressurizing pump is arranged between the liquid storage tank and the cold water tank and the hot water tank, so that cold water in the cold water tank or hot water in the hot water tank is pumped into the three-way liquid storage tank and then enters the water pipeline of the upper cover plate, and the temperature of the battery is reduced or increased.
Furthermore, the electromagnetic valve determines the on or off of the corresponding pipeline, so that the water pipeline of the upper cover plate is ensured to pump proper water according to the environmental requirement.
Further, the BMU is responsible for control of the cell level within the battery module, including cell voltage and temperature signal monitoring, equalization control, state of charge (SOC) estimation, battery state of health (SOH) estimation, and thermal management control. With BMU we can get the change of each parameter in the cell in real time to judge what action the system should take at this time.
Furthermore, the energy storage system is a whole system formed by connecting single energy storage batteries (electric cores) in series and parallel, the electric cores are connected in series to form a PACK (battery module), one conventional lithium iron phosphate electric core is 280Ah, rated voltage is 3.2V, the capacity of a single PACK is generally 14-15 kwh, and the fact that 15 electric cores are connected in series to form a PACK is calculated; several PACKs form a battery cluster (RACK) by means of battery PACK holders.
Further, the module constant temperature control module is used with the fan that flow equalizes, and module constant temperature control module monitors: cell temperature, ambient temperature. When the battery core temperature detection module detects that the working temperature of the battery core is lower than 10 ℃ (the capacity of the battery is reduced below the temperature), or the environment temperature detection module detects that the environment temperature is 10 ℃, the electromagnetic valve and the booster pump of the hot water tank are started, hot water is introduced into the water pipeline, the flow equalization fan (A, B) is kept on, and the water pipeline and the flow equalization fan (A, B) stop working until the battery core temperature detection module and the environment temperature detection module detect that the temperature of the battery core and the environment temperature detection module is 20 ℃.
Further, the temperature controller receives temperature information obtained from the battery cell temperature detection module and the environment temperature detection module to judge whether to start the flow equalizing fan and pump cold water or warm water into the water pipe waterway.
The control method of the combined heat dissipating device of the energy storage battery module can ensure that the energy storage module works at the optimal environment temperature and prolong the service life of the battery; the battery module is cooled by adopting a grading temperature control mode when the temperature is too high, and the environment temperature can be increased when the temperature is low, so that the battery can work at the optimal working temperature. The working flow of the invention can effectively prevent the problem of thermal runaway or service life reduction of the battery caused by overhigh or overlow ambient temperature or self working temperature.
In summary, the invention is used for controlling the temperature of the energy storage battery at a module level, ensuring that the working temperature of the battery is controlled in an optimal working temperature range, avoiding thermal runaway caused by overheating of the battery, and improving the cycle service life of the battery.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a battery cluster assembly temperature control;
FIG. 2 is a schematic diagram of a single module combination temperature control;
FIG. 3 is a schematic view of the water circuit of the upper cover plate.
Wherein: 1. a battery module; 11. a battery cell; bmu;13. a flow equalizing fan; 14. an upper cover plate; 141. a water inlet; 142. a water line; 143. a water outlet; 15. a constant temperature control module; 151. the battery cell temperature detection module; 152. an ambient temperature display module; 2. a battery pack rack; 3. a water pipe between the modules; 4. a liquid storage tank; 5. an electromagnetic valve; 6. a pressurizing pump; 7. a cold water tank; 8. a hot water tank; 9. a liquid discharge tank.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the 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.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Various structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
The invention provides a combined heat dissipation device of an energy storage battery module and a control method thereof, which adopt a combined scheme of laying a return water pipe on a module-level air cooling and module upper cover plate to carry out module-level management on the temperature of the battery, and the management is finer and the scheme is more perfect. The added water pipe can not only run cold water, but also ensure the working temperature of the battery to be between 20 and 30 ℃ through hot water in extremely cold areas, and the battery can be charged and discharged better within the working temperature range and has longer cycle service life.
Referring to fig. 1, the invention relates to a heat dissipating device for an energy storage battery module, which comprises a battery module 1, a battery pack frame 2, a liquid storage tank 4, a cold water tank 7, a hot water tank 8 and a liquid discharge tank 9,
the battery pack frame 2 is sequentially provided with a plurality of battery modules 1 at intervals from top to bottom, adjacent battery modules 1 are connected through inter-module water pipes 3, the input ends of the inter-module water pipes 3 are respectively connected with a cold water tank 7 and a hot water tank 8 after passing through a liquid storage tank 4, a booster pump 6 is arranged between the liquid storage tank 4 and the input ends of the inter-module water pipes 3, and corresponding electromagnetic valves 5 and booster pumps 6 are respectively arranged between the cold water tank 7 and the hot water tank 8 and between the liquid storage tank 4; the output end of the inter-module water pipe 3 is connected with a liquid discharge tank 9.
The battery module 1 is used for packaging a plurality of battery cells 11 in the same shell frame and communicating with the outside through a uniform boundary; a module is also called a pack. The battery cell 1 used in the invention is a lithium iron phosphate battery cell.
The battery pack frame 2 is a frame for supporting the battery modules, the number of layers is 7-9, each layer is provided with one battery module 1, and each battery module 1 is formed by connecting 16-24 battery cells 11 in series.
Inter-module water pipe 3: the waterways of the two modules are connected, so that cold and hot water between the modules can flow conveniently, and the water between the modules is connected with the three modules.
Liquid storage tank 4: cold water in the cold water tank can be pumped into the three-way liquid storage tank through the pressure pump 6 (at the moment, the pressure pump on the hot water tank stops working and the corresponding electromagnetic valve is blocked), hot water in the hot water tank can also be pumped into the three-way liquid storage tank through the pressure pump 6 (at the moment, the pressure pump on the cold water tank stops working and the corresponding electromagnetic valve is blocked), liquid in the cold water tank and the hot water tank is pumped into the three-way liquid storage tank according to the requirements and the instructions of the controller, and then the liquid is sent into corresponding module water inlets through the pressure pump on the three-way liquid storage tank; the three-way liquid storage tank is designed to meet the requirement of the same channel and different liquids are shared.
Electromagnetic valve 5: the water pipe is opened and closed.
Pressurizing pump 6: and increasing the water pressure to finish normal water supply.
Cold water tank 7: cold water is provided, and the temperature of the cold water is in the range of 0-5 ℃. The cold water is used for radiating heat of the working battery, so that the battery is ensured to work at the optimal working temperature of 20-25 ℃.
Hot water tank 8: hot water is provided, and the temperature of the hot water is 45-50 ℃. The hot water is used for keeping the battery warm in a colder climate, so that the battery is ensured to work at an optimal working temperature of 20-25 ℃.
Liquid discharge tank 9: and collecting the liquid flowing through the battery module and discharging the liquid through an external waterway.
Referring to fig. 2, the single battery module 1 specifically includes: the battery cell 11, BMU12, flow equalizing fan 13, upper cover plate 14 and module constant temperature control module 15, a plurality of battery cells 11 array sets up to be connected with BMU12, flow equalizing fan 13 includes a plurality ofly, and the interval sets up in one side of battery cell 11, and upper cover plate 14 sets up in the top of battery cell 11, and module constant temperature control module 15 sets up one side of upper cover plate 14.
Cell 11: providing a minimum unit of electrical energy. Generally, the protection circuit is not used independently, and the protection circuit and the shell are required to be used after being packaged together.
BMU12: the single battery management unit can obtain data such as voltage, current, temperature and the like, and upload the data to the energy storage management system.
Flow equalizing fan 13: the heat dissipation and flow equalization environment is provided for the module, and the air flow equalization inside the module is ensured.
Upper cover plate 14: the modules are packaged as individual units with a water return line disposed thereon.
Module thermostatic control module 15: comprises a battery cell temperature detection module 151, an ambient temperature detection module 152 and a temperature controller.
The cell temperature detection module 151 is configured to detect a temperature of each cell;
the ambient temperature detection module 152 is configured to detect an ambient temperature in the module;
and (3) a temperature controller: and controlling the flow equalizing fan to open and close and the water pipe waterway through temperature detection and logic judgment.
The battery cell temperature detection module is connected with each battery cell through a temperature sensor; the environmental temperature detection module directly monitors the internal environmental temperature of the module; the temperature controller is connected with the battery core temperature detection module 151 and the environment temperature detection module 152 to acquire the data monitored by the battery core temperature detection module 151 and the environment temperature detection module, and then a wireless instruction is sent to the flow equalizing fan, the water pipe waterway booster pump and the electromagnetic valve to control the action of the flow equalizing fan, the water pipe waterway booster pump and the electromagnetic valve through judgment.
Referring to fig. 3, one side of the upper cover plate 14 is provided with a water inlet 141, the other side is correspondingly provided with a water outlet 143, a water pipeline 142 is arranged in the upper cover plate 14, and two ends of the water pipeline 142 are correspondingly connected with the water inlet 141 and the water outlet 143.
Water inlet 141: cold or hot water inlet.
Water line 142: to increase the heat dissipation/warming time, the tube is made into a loop-type tube.
Water outlet 143: and an outlet for cold or hot water.
A control method of a combined heat radiation device of an energy storage battery module comprises the following steps:
when the battery core temperature detection module detects that the working temperature of the battery core is 10-28 ℃ or the environment temperature detection module detects that the environment temperature is 10-28 ℃, the flow equalizing fan and the water pipeline do not work;
when the battery core temperature detection module detects that the working temperature of the battery core exceeds 28 ℃ or the environment temperature detection module detects that the environment temperature exceeds 28 ℃, only the flow equalizing fan is started, and the water pipeline temporarily does not work;
when the battery core temperature detection module detects that the working temperature of the battery core exceeds 35 ℃ or the environment temperature detection module detects that the environment temperature is above 30 ℃, a cold water tank electromagnetic valve and a booster pump are started, cold water is introduced into a water pipeline, and a flow equalizing fan (A, B) is kept on;
when the working temperature of the battery core is lower than 28 ℃ and the ambient temperature is lower than 30 ℃, closing the water pipeline and only opening the flow equalizing fan;
when the battery core temperature detection module detects that the working temperature of the battery core is lower than 10 ℃ (the capacity of the battery is reduced below the temperature), or the environment temperature detection module detects that the environment temperature is 10 ℃, the electromagnetic valve and the booster pump of the hot water tank are started, hot water is introduced into the water pipeline, the flow equalization fan (A, B) is kept on, and the water pipeline and the flow equalization fan (A, B) stop working until the battery core temperature detection module and the environment temperature detection module detect that the temperature of the battery core and the environment temperature detection module is 20 ℃.
In summary, according to the energy storage battery module combined heat dissipating device and the control method thereof, different constant temperature measures (liquid cooling or temperature rising) can be started according to the detected temperature; the temperature management can be carried out by adopting grading measures, so that the safety is ensured and the energy is saved; the service life of the battery is prolonged, and the working adaptability of the battery under wide ambient temperature is ensured. (whether the ambient environment is high or low, can operate at constant temperature at the optimal operating temperature).
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides an energy storage battery module combination heat abstractor, a serial communication port, including battery pack frame (2), battery pack frame (2) are from last to interval setting up the multilayer in proper order down, correspond in every layer of battery pack frame (2) and install battery module (1), the top of battery module (1) is provided with upper cover plate (14), be provided with water pipeline (142) in upper cover plate (14), water pipeline (142) between adjacent upper cover plate (14) are connected through intermodule water pipe (3), water pipeline (142) one end of top layer upper cover plate (14) is connected cold water tank (7) and hot-water tank (8) respectively through liquid storage pot (4), liquid discharge jar (9) are connected to the other end of bottom water pipeline (142).
2. The energy storage battery module combination heat sink as claimed in claim 1, wherein a booster pump (6) is arranged between the water pipe (142) of the top upper cover plate (14) and the liquid storage tank (4).
3. The energy storage battery module combination heat dissipating device according to claim 1, wherein a corresponding pressurizing pump (6) is respectively arranged between the liquid storage tank (4) and the cold water tank (7) and the hot water tank (8).
4. The energy storage battery module combination heat dissipation device according to claim 3, wherein corresponding electromagnetic valves (5) are respectively arranged between the liquid storage tank (4) and the cold water tank (7) and between the liquid storage tank and the hot water tank (8).
5. The energy storage battery module combination heat dissipation device according to claim 1, wherein the battery module (1) is composed of a plurality of battery cells (11) connected in series, and each battery cell (11) is connected with the BMU (12).
6. The heat sink assembly for an energy storage battery module assembly of claim 1, wherein the number of layers of the battery pack frame (2) is 7-9.
7. The energy storage battery module combined heat sink according to claim 1, wherein one side of the upper cover plate (14) is provided with a module constant temperature control module (15), and the other side of the upper cover plate (14) is provided with a plurality of flow equalizing fans (13).
8. The energy storage battery module combination heat sink of claim 7, wherein the module thermostatic control module (15) comprises a cell temperature detection module (151), an ambient temperature detection module (152) and a temperature controller.
9. The heat sink of claim 1, wherein the water pipe (142) has a zigzag structure.
10. The control method of the combined heat sink of the energy storage battery module according to any one of claims 1 to 9, characterized in that when the working temperature of the battery cell (11) in the battery module (1) is 10 to 28 ℃ or the ambient temperature is 10 to 28 ℃, neither the flow equalizing fan nor the water pipeline arranged on the upper cover plate (14) works;
when the working temperature of the battery core (11) in the battery module (1) exceeds 28 ℃ or the ambient temperature exceeds 28 ℃, a flow equalizing fan arranged on the upper cover plate (14) is started, and the water pipeline does not work;
when the working temperature of the battery core (11) in the battery module (1) exceeds 35 ℃ or the ambient temperature is more than 30 ℃, cold water is introduced into a water pipeline arranged on the upper cover plate (14), and the flow equalizing fan is kept on;
when the working temperature of the battery core (11) in the battery module (1) is lower than 28 ℃ and the ambient temperature is lower than 30 ℃, closing a water closing pipeline arranged on the cover plate (14), and starting the flow equalizing fan;
when the working temperature of the battery core (11) in the battery module (1) is lower than 10 ℃ or the ambient temperature is 10 ℃, hot water is introduced into a water pipeline arranged on the upper cover plate (14) and the flow equalizing fan is kept on, and the operation is stopped until the temperature is 20 ℃.
CN202311330730.3A 2023-10-13 2023-10-13 Energy storage battery module combined heat dissipation device and control method thereof Pending CN117317467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311330730.3A CN117317467A (en) 2023-10-13 2023-10-13 Energy storage battery module combined heat dissipation device and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311330730.3A CN117317467A (en) 2023-10-13 2023-10-13 Energy storage battery module combined heat dissipation device and control method thereof

Publications (1)

Publication Number Publication Date
CN117317467A true CN117317467A (en) 2023-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311330730.3A Pending CN117317467A (en) 2023-10-13 2023-10-13 Energy storage battery module combined heat dissipation device and control method thereof

Country Status (1)

Country Link
CN (1) CN117317467A (en)

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