CN114976351A - Thermal management system and energy storage container - Google Patents

Thermal management system and energy storage container Download PDF

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Publication number
CN114976351A
CN114976351A CN202210585872.3A CN202210585872A CN114976351A CN 114976351 A CN114976351 A CN 114976351A CN 202210585872 A CN202210585872 A CN 202210585872A CN 114976351 A CN114976351 A CN 114976351A
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China
Prior art keywords
heat exchanger
management system
parallel branch
heat
thermal management
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Pending
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CN202210585872.3A
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Chinese (zh)
Inventor
刘金芝
汪超
李东方
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Shenzhen Clou Electronics Co Ltd
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Shenzhen Clou Electronics Co Ltd
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Priority to CN202210585872.3A priority Critical patent/CN114976351A/en
Publication of CN114976351A publication Critical patent/CN114976351A/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
    • H01M10/61—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
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/627—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
    • H01M10/65—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
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • 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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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

Abstract

The invention discloses a thermal management system and an energy storage container. The thermal management system of the present invention includes a main line and a first parallel branch. Wherein, the main circuit includes external heat exchanger, first choke valve, internal heat exchanger and compression module. The first parallel branch comprises a heat exchange plate and a second throttle valve, the heat exchange plate is in heat conduction contact with the heating source, one end of the first parallel branch is connected between the external heat exchanger and the internal heat exchanger, and the other end of the first parallel branch is connected between the internal heat exchanger and the compression module. The coolant can be to the inner space heat transfer of box when flowing through internal heat exchanger, and the second choke valve can let in first parallelly connected branch road with the coolant and flow through the heat transfer board, when making battery module can normally work, compromises economic nature. The energy storage container comprises a box body, a thermal management system and a plurality of battery modules. The box body is provided with an accommodating cavity. The plurality of battery modules are accommodated in the accommodating cavity. The heat management system is used for managing the temperature of the battery module, so that the service life of the energy storage container is prolonged.

Description

Thermal management system and energy storage container
Technical Field
The invention relates to the field of battery temperature control, in particular to a thermal management system and an energy storage container.
Background
When the heat source in the box body is subjected to heat management, particularly under the condition that the normal working temperature range of the heat source is narrow, the temperature of the heat source is difficult to control. When the prior art is used for heat management, the temperature management mode with large error has low cost but cannot meet the condition that the heating source is always in the normal working temperature range, and the temperature management mode with high precision has high cost, so that the economical efficiency of temperature control is difficult to be considered while the temperature of the heating source is controlled to be in the normal working temperature range.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a thermal management system which can give consideration to the economical efficiency of the system on the premise of effectively controlling the temperature of a heating element.
The invention also provides an energy storage container with the thermal management system.
A thermal management system according to an embodiment of the first aspect of the invention, comprises:
the main circuit comprises an external heat exchanger, a first throttle valve, an internal heat exchanger and a compression module, wherein the external heat exchanger, the first throttle valve, the internal heat exchanger and the compression module are sequentially connected, the external heat exchanger is used for exchanging heat for the external space of the box body, and the internal heat exchanger is used for exchanging heat for the internal space of the box body;
a first parallel branch including a heat exchange plate in heat-conducting contact with a heat source, a first end of the first parallel branch being connected between the external heat exchanger and the internal heat exchanger, and a second end of the first parallel branch being connected between the internal heat exchanger and the compression module;
the refrigerant is contained in the main line and the first parallel branch.
The thermal management system provided by the embodiment of the invention has the following beneficial effects: the heat management system comprises a main line and a first parallel branch, the main line comprises an external heat exchanger, a first throttle valve, an internal heat exchanger and a compression module, a refrigerant can exchange heat with the inner space of the box body when flowing through the internal heat exchanger, the first parallel branch comprises a heat exchange plate and a second throttle valve, the second throttle valve can lead the refrigerant into the heat exchange plate, and therefore sufficient heat exchange can be achieved with a heating source, the heating source is enabled to be at a normal working temperature, and the economy is considered when the battery module can work normally.
According to some embodiments of the present invention, the compression module includes a first passage, a second passage, a gas-liquid separator connected between the inner pair of heat exchangers and the first parallel branch, the gas-liquid separator connected to the outer pair of heat exchangers through the first passage, and a compressor having one end connected to the gas-liquid separator through the second passage and the other end connected to the first passage.
According to some embodiments of the present invention, the compression module includes a first passage, a second passage, a gas-liquid separator connected to the external heat exchanger through the first passage, and a compressor having one end connected to the gas-liquid separator through the second passage and the other end connected to the first passage.
According to some embodiments of the present invention, the first parallel branch comprises a plurality of second parallel branches, a first end of each of the second parallel branches is connected between the outer heat exchanger and the inner heat exchanger, a second end of each of the second parallel branches is connected between the inner heat exchanger and the compression module, and the second parallel branch comprises at least one of the heat exchange plates and a second throttle valve installed between the outer heat exchanger and the heat exchange plate or between the heat exchange plate and the compression module.
According to some embodiments of the invention, the main circuit further comprises a third throttle valve disposed between the compression module and the inner pair of heat exchangers.
According to some embodiments of the invention, the main circuit is further provided with a fourth throttle valve, the fourth throttle valve being arranged between the compression module and the external heat exchanger.
The energy storage container according to the second aspect embodiment of the invention comprises a container body, the thermal management system provided by the first aspect embodiment and a plurality of battery modules. Wherein the box body is provided with an accommodating cavity; the plurality of battery modules are accommodated in the accommodating cavity; the heat management system is used for managing the temperature of the battery module, the air outlet of the inner heat exchanger is communicated with the accommodating cavity, and the heat exchange plate is attached to the outer surface of the battery module.
The energy storage container provided by the embodiment of the invention at least has the following beneficial effects: the energy storage container comprises a container body, a heat management system and a plurality of battery modules, wherein the container body is provided with a containing cavity, and the plurality of battery modules are contained in the containing cavity. When carrying out the heat exchange to the holding chamber to the inside heat exchanger, the temperature difference of each battery module and lead to the radiating effect different, can adjust the flow and the velocity of flow of the refrigerant that flows into each heat transfer board through the aperture that changes each second choke valve to make the temperature uniformity good between each battery module, the life of energy storage container can promote.
According to some embodiments of the present invention, the temperature sampling device further comprises a plurality of temperature sampling devices, each of the temperature sampling devices corresponds to each of the battery modules one to one, the temperature sampling device comprises a detection module, the detection module is configured to obtain a temperature of the battery module, the first parallel branch comprises a plurality of second parallel branches, a first end of each of the second parallel branches is connected between the external heat exchanger and the internal heat exchanger, a second end of each of the second parallel branches is connected between the internal heat exchanger and the compression module, the second parallel branch comprises at least one heat exchange plate and a second throttle valve, and the second throttle valve is installed between the external heat exchanger and the heat exchange plate or between the heat exchange plate and the compression module;
the heat management system further comprises a control module, wherein the control module is connected to the detection module and used for acquiring temperature data and adjusting the opening of the second throttle valve according to the temperature data so as to control the flow and the flow speed of the refrigerant flowing into the heat exchange plate.
According to some embodiments of the invention, the air outlet of the inner heat exchanger is disposed at the top of the accommodating chamber.
According to some embodiments of the invention, the air guide device further comprises an air guide member, the air guide member extends along the length direction of the box body, the air guide member is provided with a first channel, an air guide opening and an opening, the air guide opening and the opening are both communicated with the first channel, the air guide opening faces the inner heat exchanger, the opening is located at the top of the box body, and the plurality of openings are arranged at intervals along the extending direction of the air guide member.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a refrigeration cycle of a thermal management system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a heating cycle of a thermal management system according to an embodiment of the present invention;
fig. 4 is a schematic view of an energy storage container according to an embodiment of the invention.
Reference numerals:
a main line 100, a first throttling device 110, a first throttle valve 120, an internal heat exchanger 130, a third throttle valve 140, a gas-liquid separator 150, a compressor 160, an external heat exchanger 170, a fourth throttle valve 180, a first passage 191, and a second passage 192;
a first parallel branch 200, a second parallel branch 300, a second throttle valve 310, and a heat exchange plate 320;
a battery module 400;
air guide 500, first channel 510, opening 520, air guide opening 530;
a temperature sampling device 600;
a box body 700 and a containing cavity 710.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 3, a first embodiment of the present invention provides a thermal management system for performing thermal management on a heat generating source accommodated in an internal space of a container body, where the container body may be any entity having an internal space, such as an energy storage container, and a battery module and other heat generating devices accommodated in the energy storage container are heat generating sources. The thermal management system includes a main line 100 and a first parallel branch 200. The main line 100 includes an external heat exchanger 170, a first throttle valve 120, an internal heat exchanger 130, and a compression module, the external heat exchanger 170, the first throttle valve 120, the internal heat exchanger 130, and the compression module are sequentially connected, and the first throttle valve 120 is used to control a flow rate of a refrigerant flowing into the internal heat exchanger 130. The external heat exchanger 170 serves to exchange heat with an external space of the cabinet, and the internal heat exchanger 130 serves to exchange heat with an internal space of the cabinet. The first parallel branch 200 includes a heat exchange plate 320 and a second throttle valve 310, the heat exchange plate 320 is connected to the heat source, a first end of the first parallel branch 200 is connected between the outer heat exchanger 170 and the inner heat exchanger 130, a second end of the first parallel branch 200 is connected between the inner heat exchanger 130 and the compression module, and the refrigerant is contained in the main line 100 and the first parallel branch 200. For example, when exchanging heat with the casing, the inner heat exchanger 130 is an evaporator, and exchanges heat with the inner space of the casing. The external heat exchanger 170 is a condenser and exchanges heat with the external space of the cabinet.
The refrigerant can exchange heat to the inner space of the box body when flowing through the inner heat exchanger 130, when the inner heat exchanger 130 can meet the requirement that the heating source is at the normal working temperature, the second throttle valve 310 is closed to enable the refrigerant to only flow through the inner heat exchanger 130, and when the inner heat exchanger 130 is insufficient to enable the temperature of the heating source to be within the normal working range, the second throttle valve 310 is opened to enable the refrigerant to be introduced into the heat exchange plate 320, so that the refrigerant can exchange heat with the heating source fully, and the heating source is at the normal working temperature. By the mode, the economy is considered while the heating source is kept in the normal working temperature range, and the operation cost is reduced.
Referring to fig. 2, specifically, in the refrigeration cycle, the compression module includes a first path 191, a second path 192, a gas-liquid separator 150, and a compressor 160, the gas-liquid separator 150 is connected between the inner heat exchanger 130 and the first parallel branch 200, the gas-liquid separator 150 is connected to the outer heat exchanger 170 through the first path 191, one end of the compressor 160 is connected to the gas-liquid separator 150 through the second path 192, and the other end of the compressor 160 is connected to the first path 191. After the refrigerant absorbs heat through heat exchange with the internal space at the internal heat exchanger 130, part of the refrigerant is gasified to form a gas-liquid mixture, since liquid substances can damage the compressor, the gas-liquid mixture firstly enters the gas-liquid separator 150 and then is separated from the liquid refrigerant, the gas refrigerant enters the compressor 160 and is converted into a high-temperature high-pressure gas refrigerant, so that heat can be discharged through heat exchange between the external heat exchanger and the external space of the box body, the high-temperature high-pressure gas refrigerant and unvaporized refrigerant enter the external heat exchanger 170 together and then are cooled, and the gas refrigerant is cooled and condensed and then converted into a low-temperature refrigerant for the next cooling cycle.
Referring to fig. 3, in the heating cycle, the compression module includes a first passage 191, a second passage 192, a gas-liquid separator 150, and a compressor 160, the gas-liquid separator 150 is connected to the external heat exchanger 170, the gas-liquid separator 150 is connected to the internal heat exchanger 130 through the first passage 191, one end of the compressor 160 is connected to the gas-liquid separator 150 through the second passage 192, and the other end of the compressor 160 is connected to the first passage 191. The flowing direction of the refrigerant is opposite to that of the refrigerant in the refrigeration cycle, the refrigerant is heated by the external heat exchanger 170 and then enters the gas-liquid separator 150, the gas is introduced into the compressor 160, the compressor 160 compresses the high-temperature gas into the high-temperature refrigerant and then the high-temperature refrigerant is converged into the refrigerant in the gas-liquid separator 150 and then flows into the internal heat exchanger 130 and/or the heat exchange plate 320 together, and heat exchange is performed on the heat source, so that the temperature of the heat source is raised to be within a normal working temperature range.
Referring to fig. 2 and 3, in some embodiments, the first parallel branch 200 includes a plurality of second parallel branches 300, a first end of each second parallel branch 300 is connected between the outer heat exchanger 170 and the inner heat exchanger 130, a second end of each second parallel branch 300 is connected between the inner heat exchanger 130 and the compression module, the second parallel branch 300 includes at least one heat exchange plate 320 and a second throttle valve 310, and the second throttle valve 310 is installed between the outer heat exchanger 170 and the heat exchange plate 320 or between the heat exchange plate 320 and the compression module.
Specifically, when there are multiple heat sources, one second parallel branch 300 corresponds to one heat source, that is, the heat exchange plate 320 in one second parallel branch 300 is in heat conduction contact with one heat source, and when the heat conduction liquid flows to the second parallel branch 300, the second throttle valve 310 can adjust the flow rate and flow rate of the refrigerant flowing into the heat exchange plate 320 by adjusting the opening degree, thereby controlling the degree of heat exchange with the heat source, and making each heat source always in the normal operating temperature range. It should be noted that, a plurality of heat exchange plates 320 can be connected to one heat source according to the actual working condition, and the plurality of heat exchange plates 320 are bonded to different surfaces of the heat source, and since the heat exchange plates 320 are connected in parallel, the flow rate and the flow velocity of the refrigerant flowing into each heat exchange plate 320 can be independently controlled, so that the temperature of each surface of the heat source can be independently controlled to accurately regulate and control the temperature of the heat source, thereby achieving the purpose of normal operation.
Referring to fig. 2, in some embodiments, the main circuit 100 further includes a third throttle valve 140, the third throttle valve 140 being disposed between the compression module and the inner heat exchanger 130. The third throttle valve 140 is used to control the flow rate of the gas-liquid mixture flowing into the gas-liquid separator 150 in the refrigeration cycle, so that the gas-liquid separator 150 can operate normally.
Referring to fig. 3, in some embodiments, the main circuit 100 is further provided with a fourth throttle valve 180, the fourth throttle valve 180 being disposed between the compression module and the external heat exchanger 170. The third solenoid valve is used to control the flow rate of the gas-liquid mixture flowing into the gas-liquid separator 150 during the heating cycle, so that the gas-liquid separator 150 can operate normally.
Referring to fig. 1, in some embodiments, the main circuit 100 further includes a first throttling device 110 installed between the outer heat exchanger 170 and the inner heat exchanger 130, and the first throttling device 110 is capable of reducing pressure and temperature, so that the flow rate of the refrigerant flowing through the first throttling device 110 is increased, the pressure of the refrigerant is reduced, and the refrigerant becomes a low-temperature and low-pressure refrigerant. The first throttling device 110 may be a throttle valve, an electronic expansion valve, or the like.
Therefore, the thermal management system of the embodiment of the invention can effectively manage the temperature of the heating source in the box body, only the inner heat exchanger 130 is used for exchanging heat for the heating source when the air heat exchange can meet the requirement that the heating source is at the normal working temperature, otherwise, the inner heat exchanger 130 and the heat exchange plate 320 are used in combination to enhance the heat exchange effect for the heating source, so that the heating source is always in the normal working temperature range, and the economy of the temperature management for the heating source is ensured.
Referring to fig. 1 to 4, a second aspect embodiment of the present invention provides an energy storage container including a container body and a plurality of battery modules 400. Wherein, the box is provided with the holding chamber. The plurality of battery modules 400 are accommodated in the accommodating chamber. The energy storage container further comprises a thermal management system provided in the embodiment of the first aspect, the thermal management system is used for managing the temperature of the battery module 400, the air outlet of the internal heat exchanger 130 is communicated with the accommodating cavity, and the heat exchange plate 320 is attached to the outer surface of the battery module 400. The energy storage container can be suitable for the use state of different climatic environments. When the energy storage container is in a high-temperature environment, the heat management system can absorb the heat of the battery module 400 through refrigeration cycle; when the energy storage container is in a low-temperature environment, the thermal management system can transfer heat to the battery module 400 through thermal cycle, so that the battery module 400 is always at a normal use temperature.
The battery module 400 may have different temperatures at different positions in the energy storage container, for example, the temperature difference between the battery module 400 close to the air outlet of the internal heat exchanger 130 and the battery module 400 far from the air outlet of the internal heat exchanger 130 is large. Therefore, the flow rate and the flow velocity of the cooling medium in the second parallel branch 300 corresponding to each battery module 400 need to be adjusted according to the current temperature adaptability of the battery module 400.
Referring to fig. 4, in some embodiments, the energy storage container further includes a plurality of temperature sampling devices 600, each temperature sampling device 600 corresponds to each battery module 400 one to one, each temperature sampling device 600 includes a detection module, the detection module is configured to collect the temperature of the battery module 400, the thermal management system further includes a control module, the control module is connected to the detection module, and the control module is configured to obtain temperature data and adjust the opening degree of the second throttle valve 310 according to the temperature data, so as to control the flow rate and the flow velocity of the refrigerant flowing into the heat exchange plate 320. The control module may be a CPU or a control chip, and the detection module may be a temperature sensor. The temperature of each battery module 400 is always within the normal working temperature range, so that the temperature uniformity between the battery modules 400 is ensured, and the service life of the energy storage container is prolonged. In addition, the number of the heat exchange plates 320 connected to each battery module 400 may be determined according to the operating temperature of the battery module to ensure the temperature control capability of the battery module.
In particular, the heat exchange plate 320 is detachably connected to the second parallel branch 300. Each second parallel branch 300 surrounds the corresponding battery module 400, and a threaded hole is formed in the second parallel branch 300, so that when the heat exchange plate 320 is not needed, the coolant can be prevented from flowing out through blocking the threaded hole, and when the heat exchange plate 320 is used, the heat exchange plate 320 can be screwed and connected to the second parallel branch 300 and is in heat conduction contact with the battery module 400.
Referring to fig. 4, in some embodiments, the air outlet of the inner heat exchanger 130 is disposed at the top of the receiving cavity 710. For example, in the refrigeration cycle, the cold air gradually moves downward from the top of the case 700, and the hot air generated from the battery module 400 moves upward to exchange heat with the cold air in the vicinity of the battery module 400, so that the heat exchange is sufficient, thereby reducing the temperature of the battery module 400.
Referring to fig. 4, in some embodiments, the refrigerator further includes a wind guide 500, the wind guide 500 extends along a length direction of the cabinet 700, the wind guide 500 is provided with a first channel 510, a wind guide opening 530 and an opening 520, the wind guide opening 530 and the opening 520 are both communicated with the first channel 510, the wind guide opening 530 faces the inner heat exchanger 130, the opening 520 is located at the top of the cabinet 700, a plurality of openings 520 are spaced along the extending direction of the wind guide 500, and the openings 520 are used for releasing air cooled by the refrigeration device. The arrangement of the plurality of openings 520 can enable the cooled or heated air to be released from the openings 520 and then uniformly fill the whole accommodating cavity 710, thereby improving the temperature uniformity among the battery modules 400. Further, the number of the openings 520 is equal to and corresponds to the number of the battery modules 400 one by one, so that the battery modules 400 corresponding to the openings 520 can be brought into contact after the cooled or heated air is released from the openings 520, and the heat exchange is sufficient.
By the above, the energy storage container of this application embodiment passes through thermal management system and carries out accurate control to the temperature of each battery module 400, carries out the heat transfer to each battery module 400 through the refrigerant in air heat transfer and the heat transfer board 320. The temperature of each battery module 400 can be controlled alone to it is good to guarantee that each battery module 400 is in normal operating temperature and the temperature uniformity between each battery module 400, thereby promotes the holistic life of energy storage container. The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A thermal management system, comprising:
the main circuit comprises an external heat exchanger, a first throttling valve, an internal heat exchanger and a compression module, wherein the external heat exchanger, the first throttling valve, the internal heat exchanger and the compression module are sequentially connected, the external heat exchanger is used for exchanging heat for the external space of the box body, and the internal heat exchanger is used for exchanging heat for the internal space of the box body;
a first parallel branch including a heat exchange plate and a second throttle valve, the heat exchange plate being in heat-conducting contact with a heat source, a first end of the first parallel branch being connected between the external heat exchanger and the internal heat exchanger, a second end of the first parallel branch being connected between the internal heat exchanger and the compression module;
the refrigerant is contained in the main line and the first parallel branch.
2. The thermal management system of claim 1, wherein the compression module comprises a first passage, a second passage, a gas-liquid separator, and a compressor, the gas-liquid separator is connected between the inner heat exchanger and the first parallel branch, the gas-liquid separator is connected to the outer heat exchanger through the first passage, one end of the compressor is connected to the gas-liquid separator through the second passage, and the other end of the compressor is connected to the first passage.
3. The thermal management system of claim 1, wherein the compression module comprises a first passage, a second passage, a gas-liquid separator, and a compressor, the gas-liquid separator is connected to the external heat exchanger, the gas-liquid separator is connected to the internal heat exchanger through the first passage, one end of the compressor is connected to the gas-liquid separator through the second passage, and the other end of the compressor is connected to the first passage.
4. The thermal management system of claim 1, wherein said first parallel branch comprises a plurality of second parallel branches, a first end of each of said second parallel branches being connected between said outer heat exchanger and said inner heat exchanger, a second end of each of said second parallel branches being connected between said inner heat exchanger and said compression module, said second parallel branches comprising at least one of said heat exchanger plates and a second throttle valve, said second throttle valve being mounted between said outer heat exchanger and said heat exchanger plates or between said heat exchanger plates and said compression module.
5. The thermal management system of claim 1 or 3, wherein the main circuit further comprises a third throttle disposed between the compression module and the pair of inner heat exchangers.
6. The thermal management system of claim 1 or 4, wherein the main circuit is further provided with a fourth throttle valve disposed between the compression module and the external heat exchanger.
7. Energy storage container, its characterized in that includes:
the box body is provided with an accommodating cavity;
the battery modules are accommodated in the accommodating cavity;
the thermal management system of any one of claims 1 to 6, wherein the air outlet of the inner heat exchanger is communicated with the accommodating cavity, and the heat exchange plate is attached to the outer surface of the battery module.
8. The energy storage container of claim 7, further comprising a plurality of temperature sampling devices, each temperature sampling device corresponding to each battery module, the temperature sampling devices comprising a detection module for acquiring the temperature of the battery module, the first parallel branch comprising a plurality of second parallel branches, a first end of each second parallel branch being connected between the external heat exchanger and the internal heat exchanger, a second end of each second parallel branch being connected between the internal heat exchanger and the compression module, the second parallel branch comprising at least one heat exchange plate and a second throttle valve, the second throttle valve being installed between the external heat exchanger and the heat exchange plate or between the heat exchange plate and the compression module;
the heat management system further comprises a control module, wherein the control module is connected to the detection module and used for acquiring temperature data and adjusting the opening of the second throttle valve according to the temperature data so as to control the flow and the flow speed of the refrigerant flowing into the heat exchange plate.
9. The energy storage container of claim 7, wherein the air outlet of the inner pair of heat exchangers is disposed at a top of the receiving cavity.
10. The energy storage container as claimed in claim 7, further comprising a wind guide member extending along a length direction of the box body, wherein the wind guide member is provided with a first channel, a wind guide opening and an opening, the wind guide opening and the opening are both communicated with the first channel, the wind guide opening faces the inner heat exchanger, the opening is located at the top of the box body, and the plurality of openings are arranged at intervals along the extending direction of the wind guide member.
CN202210585872.3A 2022-05-27 2022-05-27 Thermal management system and energy storage container Pending CN114976351A (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210585872.3A CN114976351A (en) 2022-05-27 2022-05-27 Thermal management system and energy storage container

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CN114976351A true CN114976351A (en) 2022-08-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117374468A (en) * 2023-12-07 2024-01-09 北京中矿赛力贝特节能科技有限公司 Movable energy storage battery container ventilation heat exchange device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117374468A (en) * 2023-12-07 2024-01-09 北京中矿赛力贝特节能科技有限公司 Movable energy storage battery container ventilation heat exchange device
CN117374468B (en) * 2023-12-07 2024-03-08 北京中矿赛力贝特节能科技有限公司 Movable energy storage battery container ventilation heat exchange device

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