CN217881677U - Energy storage battery and thermal management system thereof - Google Patents

Abstract

The utility model discloses an energy storage battery and a thermal management system thereof, comprising an air conditioner main unit and a refrigerant heat exchanger, wherein the air conditioner main unit has a refrigerant circulation pipeline; the refrigerant heat exchanger is connected in series with the refrigerant circulation pipeline and arranged on In the arrangement gap of the battery module of the energy storage battery. The thermal management system uses the cold medium as a heat exchange source to directly exchange heat with the environment inside the battery module in the energy storage battery. Due to one-time heat exchange, the evaporation temperature of the air conditioner main unit can be reduced under the cooling condition, and the condensation temperature of the air conditioner main unit can be increased under the heating condition, so as to improve the efficiency of the air conditioner main unit; the air conditioner main unit does not need fans, water pumps, etc. In addition, because the heat exchange form is one-time heat exchange, it can save the temperature response time in the existing form, especially in the case of sudden temperature rise, thus helping to improve the overall reliability of the system.

Description

An energy storage battery and its thermal management system

technical field

The utility model relates to the technical field of energy storage batteries, in particular to an energy storage battery and a thermal management system thereof.

Background technique

Energy storage batteries have high energy density and generate a lot of heat during operation. If the heat generated cannot be discharged in time, the temperature of the battery will continue to rise. High temperature will seriously affect the safety and life of the battery. Under low temperature conditions, the battery temperature is too low. If the energy storage battery is not heated, capacity decay and discharge difficulties will occur. Therefore, thermal management is required to keep the battery operating within a suitable temperature range.

The existing thermal management forms of energy storage batteries are mainly "air cooling" and "liquid cooling". The "air-cooled" form uses many fan components, which increases the probability of failure; the "air-cooled" form relies on air ducts for air convection, which makes it take up a lot of space; Or problems with uneven heating. The "liquid cooling" form has a strong heat exchange capacity, does not require ventilation ducts, and can reduce the volume of the space, but because it uses water or antifreeze solution medium, it has a large leakage safety hazard. The heat exchange forms of "air cooling" and "liquid cooling" all belong to the secondary heat exchange. The cold and heat source first transfers the cold heat to the air, antifreeze solution and other media through the intermediate heat exchanger, and then the medium passes through the fan and water pump. The cycle transfers cold and heat to the energy storage battery, and the secondary heat exchange reduces the efficiency of the system, resulting in energy waste, and the redundant design reduces the reliability of the system.

To sum up, how to solve the problems of low heat exchange efficiency and low reliability in the thermal management system of the energy storage battery has become an urgent problem to be solved by those skilled in the art.

Utility model content

In view of this, the utility model provides an energy storage battery and its thermal management system to solve the problems of low heat exchange efficiency and low reliability in the thermal management system of the energy storage battery.

In order to achieve the above object, the utility model provides the following technical solutions:

A heat management system for an energy storage battery, comprising:

The main unit of the air conditioner has a refrigerant circulation pipeline;

The refrigerant heat exchanger is connected in series with the refrigerant circulation pipeline and arranged in the arrangement gap of the battery modules of the energy storage battery.

Optionally, the energy storage battery has a plurality of thermal management areas, and each of the thermal management areas has a plurality of the arrangement gaps and the refrigerant heat exchanger.

Optionally, the refrigerant circulation pipeline includes a first refrigerant pipeline and a second refrigerant pipeline, and the refrigerant heat exchanger includes a first refrigerant interface communicated with the first refrigerant pipeline and a first refrigerant interface connected with the second refrigerant pipeline. The second refrigerant interface connected by the refrigerant pipeline; wherein, one of the first refrigerant interface and the second refrigerant interface is a refrigerant inlet, and the other is a refrigerant outlet.

Optionally, the first refrigerant pipeline includes a first refrigerant main pipe and first refrigerant branch pipes arranged in one-to-one correspondence with the thermal management area, and one end of the first refrigerant branch pipe is connected to the first refrigerant branch pipe. The main pipe communicates, and the other end of the first refrigerant branch pipe communicates with each of the first refrigerant interfaces in the corresponding thermal management area through the first refrigerant sub-collector.

Optionally, when the first refrigerant interface is a refrigerant inlet, the first refrigerant main pipe is provided with a first throttle valve and/or the first refrigerant branch pipe is provided with a second throttle valve.

Optionally, the second refrigerant pipeline includes a second refrigerant main pipe and a second refrigerant branch pipe arranged in one-to-one correspondence with the thermal management area, and one end of the second refrigerant branch pipe is connected to the second refrigerant branch pipe. The main pipe communicates, and the other end of the second refrigerant branch pipe communicates with each of the second refrigerant interfaces in the corresponding thermal management area through the second refrigerant sub-collector.

Optionally, when the second refrigerant interface is a refrigerant inlet, the second refrigerant main pipe is provided with a first throttle valve and/or the second refrigerant branch pipe is provided with a second throttle valve.

Optionally, the battery module includes a plurality of single cells arranged sequentially in a line shape in the horizontal plane, and a plurality of the battery modules are stacked to form a battery cluster, and the battery clusters are arranged in rows at intervals, and any phase The refrigerant heat exchangers are arranged in the gaps between adjacent two battery clusters.

Optionally, the refrigerant heat exchanger includes a capillary refrigerant coil.

Optionally, the capillary refrigerant coils are arranged in a zigzag shape, and cover the entire gap distribution surface of the battery module arrangement gap where they are located.

Optionally, the refrigerant heat exchanger further includes a coil fixing bracket, and the capillary refrigerant coil is fixed on the coil fixing bracket.

Optionally, the energy storage battery includes an energy storage case and a structural support arranged in the energy storage case, and the structural support separates the inner cavity of the energy storage case into a host area and a battery area, so The main unit of the air conditioner is installed in the main unit area, and the battery module and the refrigerant heat exchanger are arranged in the battery area.

Optionally, the host area is also equipped with supporting equipment arranged in conjunction with the energy storage battery, and the supporting equipment includes energy storage converters, power distribution cabinets, local controllers and fire fighting devices. at least one.

Optionally, both the refrigerant inlet and the refrigerant outlet are located at the top of the refrigerant heat exchanger.

Compared with the introduction of the background technology, the thermal management system of the above-mentioned energy storage battery includes an air conditioner host and a refrigerant heat exchanger, wherein the air conditioner host has a refrigerant circulation pipeline; the refrigerant heat exchanger is connected in series to the refrigerant circulation pipeline and is set In the arrangement gap of the battery modules of the energy storage battery. In the actual application process of this thermal management system, when the main unit of the air conditioner is running, the refrigerant medium in the refrigerant circulation pipeline flows into the refrigerant heat exchanger through the refrigerant inlet of the refrigerant heat exchanger as a direct heat exchange source, and passes through the refrigerant heat exchanger and the battery. The ambient air in the module arrangement gap performs heat exchange. After the heat exchange, the refrigerant medium flows out through the refrigerant outlet of the refrigerant heat exchanger and returns to the air conditioner through the refrigerant circulation pipeline. By controlling the working mode of the air conditioner, that is It can realize the regulation and management of the temperature of the battery module in the energy storage battery. Compared with the air-cooling and liquid-cooling methods adopted in the traditional thermal management system, the thermal management system of the present invention uses the cold medium as a heat exchange source to directly exchange heat with the environment inside the battery module in the energy storage battery, and the heat exchange The form is one-time heat exchange, no need for secondary heat exchange, and the heat exchange efficiency is greatly improved, and due to the one-time heat exchange, the evaporation temperature of the air conditioner main unit can be reduced under the cooling condition, and the condensing temperature of the air conditioner main unit can be increased under the heating condition, improving the efficiency of the air conditioner main unit ;The main unit of the air conditioner does not need fans, water pumps, etc. to transport energy consumption, and the system structure is simpler, which helps to save the space layout of the energy storage battery; in addition, because the heat exchange form is one-time heat exchange, it can save the temperature response time in the existing form, Especially in situations such as sudden temperature rise, it helps to improve the overall reliability of the system.

In addition, the utility model also provides an energy storage battery, including a thermal management system, wherein the thermal management system is the thermal management system of the energy storage battery described in any one of the solutions above. Since the above thermal management system has the aforementioned technical effects, the energy storage battery with the thermal management system should also have corresponding technical effects, which will not be repeated here.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the front structure of the thermal management system of the energy storage battery provided by the embodiment of the present invention;

Fig. 2 is a top view structural diagram of the thermal management system of the energy storage battery provided by the embodiment of the utility model;

Fig. 3 is a schematic structural diagram of the refrigerant heat exchanger provided by the embodiment of the present invention.

Among them, in Figure 1-Figure 3:

1. Single battery; 2. Battery module; 3. Battery cluster; 4. Energy storage shell; 5. Structural support; 6. Compressor; 7. Four-way reversing valve; 8. Host heat exchanger; 9 1. The first throttle valve; 10. The first refrigerant branch pipe; 11. The second throttle valve; 12. The first refrigerant sub-collector; 13. The second refrigerant sub-collector; 14. The first refrigerant interface; 15. 16. Refrigerant heat exchanger; 17. Gas-liquid separator; 18. Refrigerant circulation pipeline; 18a. First refrigerant pipeline; 18a1. First refrigerant main pipe; 18a2. First refrigerant branch pipe; 18b, second refrigerant pipeline; 18b1, second refrigerant main pipe; 18b2, second refrigerant branch pipe; 19, air duct; 20, fan; 21, filter screen; 22, air conditioner main unit; 23, energy storage converter ; 24. Power distribution cabinet; 25. Local controller; 26. Fire-fighting device; 27. Coil pipe fixing bracket.

Detailed ways

The core of the utility model is to provide an energy storage battery and its thermal management system to solve the problems of low heat exchange efficiency and low reliability in the thermal management system of the energy storage battery.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1-Fig. 3, wherein Fig. 1 is a schematic diagram of the front structure of the thermal management system of the energy storage battery provided by the embodiment of the utility model; Fig. 2 is a schematic diagram of the thermal management system of the energy storage battery provided by the embodiment of the utility model Schematic diagram of top view structure; FIG. 3 is a schematic diagram of the structure of the refrigerant heat exchanger provided by the embodiment of the utility model.

The embodiment of the present utility model provides a thermal management system of an energy storage battery, referring to FIG. 1 , including an air conditioner host 22 and a refrigerant heat exchanger 16, wherein the air conditioner host 22 has a refrigerant circulation pipeline 18; the refrigerant heat exchanger 16, It is connected in series with the refrigerant circulation pipeline 18 and arranged in the arrangement gap of the battery module 2 of the energy storage battery.

In the actual application of this thermal management system, referring to FIG. 1 , when the main unit 22 of the air conditioner is running, the refrigerant medium in the refrigerant circulation line 18 flows into the refrigerant heat exchanger 16 through the refrigerant inlet of the refrigerant heat exchanger 16 as a direct heat exchange source. heat exchange between the refrigerant heat exchanger 16 and the ambient air in the arrangement gap of the battery module 2, and the refrigerant medium after heat exchange flows out through the refrigerant outlet of the refrigerant heat exchanger 16 and returns to the The air conditioner host 22 can control and manage the temperature of the battery module 2 in the energy storage battery by controlling the working mode of the air conditioner host 22 . Compared with the air-cooling and liquid-cooling methods adopted by the traditional thermal management system, the thermal management system of the present invention uses the cold medium as a heat exchange source to directly exchange heat with the environment of the battery module 2 in the energy storage battery. The form of heat is one-time heat exchange, which does not require secondary heat exchange, and the heat exchange efficiency is greatly improved. Moreover, due to the one-time heat exchange, the evaporation temperature of the air conditioner main unit 22 can be reduced under the cooling condition, and the condensation temperature of the air conditioner main unit 22 can be increased under the heating condition. The efficiency of the air-conditioning main unit 22; the air-conditioning main unit 22 does not need fans, water pumps, etc. to transport energy consumption, the system structure is simpler, and it helps to save the space layout of the energy storage battery; The temperature response time is fast, especially in the case of sudden temperature rise, which helps to improve the overall reliability of the system.

It should be noted that those skilled in the art should be able to understand that, with reference to FIG. 1 , the main unit 22 of the air conditioner generally includes a compressor 6, a four-way reversing valve 7, a main unit heat exchanger 8, an air duct 19, a fan 20, and a gas-liquid separation unit. Components such as device 17 and filter screen 21. Among them, the four-way reversing valve 7 can switch the connection mode of the refrigerant circulation pipeline 18 between the compressor 6 and the main engine heat exchanger 8 by reversing. Only one of the connection modes is shown in FIG. 1, that is, The first refrigerant interface 14 of the refrigerant heat exchanger 16 connected to the corresponding first refrigerant pipeline 18a is a refrigerant inlet mode; the host heat exchanger 8 and the fan 20 are both arranged in the air duct 19 through the air inlet of the air duct 19 and the air outlet to realize the air circulation of the air conditioner, and the filter screen 21 is installed at the air inlet and the air outlet; in addition, the gas-liquid separator 17 is generally installed near the compressor 6 to prevent the refrigerant medium from causing liquid shock to the compressor 6 and other adverse effects. Since the structure of this part of the air-conditioning main unit 22 belongs to the conventional technology, no further description will be made here.

In addition, it should be noted that the refrigerant used in the present invention is preferably a refrigerant that inhibits combustion, so that safety hazards can be avoided even if the refrigerant leaks.

In some specific embodiments, the above-mentioned energy storage battery can be designed with multiple thermal management areas, each thermal management area has several battery modules 2, and the gaps between the battery modules 2 are provided with refrigerant heat exchangers 16 . By designing multiple thermal management areas, it is more convenient to control the temperature of each area inside the energy storage battery, and the monitoring is more accurate and the maintenance is more convenient.

In a further embodiment, referring to FIG. 1 , the above-mentioned refrigerant circulation pipeline 18 may specifically include a first refrigerant pipeline 18a and a second refrigerant pipeline 18b, wherein the refrigerant heat exchanger 16 includes a The first refrigerant interface 14 and the second refrigerant interface 15 communicated with the second refrigerant pipeline 18b; and, one of the first refrigerant interface 14 and the second refrigerant interface 15 is a refrigerant inlet, and the other is a refrigerant inlet. Export. It should be noted that the current conduction mode of the four-way reversing valve 7 in FIG. 1 corresponds to a schematic illustration that the first refrigerant interface 14 is the refrigerant inlet of the refrigerant heat exchanger 16 . Since the working mode of the second refrigerant interface 15 as the refrigerant inlet is similar to that of the first refrigerant interface 14 as the refrigerant inlet, the corresponding reversing and conducting mode of the four-way reversing valve 7 is not shown in the figure.

In a further embodiment, referring to FIG. 1 , the above-mentioned first refrigerant pipeline 18a includes a first refrigerant main pipe 18a1 and a first refrigerant branch pipe 18a2 arranged in one-to-one correspondence with the heat management area, and one end of the first refrigerant branch pipe 18a2 It communicates with the first refrigerant main pipe 18a1 , and the other end of the first refrigerant branch pipe 18a2 communicates with each first refrigerant interface 14 in the corresponding heat management area through the first refrigerant sub-collector 12 . Referring to FIG. 1 , taking the first refrigerant interface 14 as the refrigerant inlet of the refrigerant heat exchanger 16 as an example, the benefits of designing the first refrigerant pipeline 18a as the above-mentioned structure will be described: by designing the first refrigerant pipeline 18a as the above-mentioned structure form, it is more convenient to carry out partition control on each thermal management area, and the circulating refrigerant medium of the refrigerant heat exchanger 16 in each thermal management area is arranged in parallel with each other, and then can ensure the heat exchange of each refrigerant in the corresponding thermal management area The uniformity and consistency of the heat exchange of the device 16 makes the temperature distribution of the battery module 2 in the heat management area more uniform.

In some specific embodiments, referring to FIG. 1, when the first refrigerant interface 14 is a refrigerant inlet, a first throttle valve 9 may be provided on the first refrigerant main pipe 18a1, and a first throttle valve 9 may also be provided on the first refrigerant branch pipe 18a2. There is a second throttle valve 11 . By setting the first throttle valve 9 on the first refrigerant main pipe 18a1, the temperature of each thermal management area can be controlled as a whole by adjusting the flow rate, and through the second throttle valve 11, the temperature of a specified thermal management area can be correspondingly demanded. The temperature is individually regulated. In practical application, only the first throttle valve 9 may be arranged, or only the second throttle valve 11 may be arranged, or the first throttle valve 9 and the second throttle valve 11 may be arranged at the same time, A corresponding arrangement manner can be selected according to specific requirements, and no more specific limitation is made here.

In some more specific embodiments, referring to FIG. 1, the above-mentioned second refrigerant pipeline 18b may specifically include a second refrigerant main pipe 18b1 and a second refrigerant branch pipe 18b2 arranged in one-to-one correspondence with the thermal management area. One end of the pipe 18b2 communicates with the second refrigerant main pipe 18b1 , and the other end of the second refrigerant branch pipe 18b2 communicates with each second refrigerant interface 15 in the corresponding heat management area through the second refrigerant sub-collector 13 . By designing the above-mentioned structural form, when the first refrigerant interface 14 is the refrigerant inlet and the second refrigerant interface 15 is the refrigerant outlet, it can be ensured that the refrigerant outlet of each refrigerant heat exchanger 16 also has a centralized flow to the second refrigerant sub-collector 13, and then the second refrigerant sub-collector 13 concentrates the flow back to the second refrigerant branch pipe 18b2; and when the first refrigerant interface 14 is the refrigerant outlet and the second refrigerant interface 15 is the refrigerant inlet, it also has the same functions for each heat management area Partition control is carried out, and the circulating refrigerant medium of the refrigerant heat exchangers 16 in each thermal management area is also arranged in parallel with each other at this time, and then the uniform heat exchange of each refrigerant heat exchanger 16 in the corresponding thermal management area can be ensured. and consistency, so that the temperature distribution of the battery module 2 in the thermal management area is more uniform.

Similarly, when the second refrigerant interface 15 is a refrigerant inlet, the second refrigerant main pipe 18b1 may be provided with a first throttle valve, and the second refrigerant branch pipe 18b2 may be provided with a second throttle valve. Since this working mode is similar to the working mode in which the first refrigerant interface 14 is used as a refrigerant inlet, relevant illustrations are not given. By setting the first throttle valve on the second refrigerant main pipe 18b1, the temperature of each thermal management area can be controlled as a whole by adjusting the flow rate, and the temperature of a designated thermal management area corresponding to the demand can be individually controlled by the second throttle valve. regulation. In the actual application process, only the first throttle valve can be arranged, or only the second throttle valve can be arranged, or the first throttle valve and the second throttle valve can be arranged at the same time. Select a corresponding arrangement manner, and no more specific limitation is made here.

In some specific embodiments, referring to Fig. 2, the above-mentioned battery module 2 may specifically include a plurality of single cells 1 arranged sequentially in a line shape in the horizontal plane, and a plurality of battery modules 2 are stacked to form a battery cluster 3, and the battery The clusters 3 are arranged in rows at intervals, and a refrigerant heat exchanger 16 is arranged in the inter-column gap between any two adjacent battery clusters 3 . By designing the battery module 2 of the energy storage battery in this structural form, the arrangement of the refrigerant heat exchanger 16 is more convenient, and it is easier to achieve uniform heat exchange for the battery module 2 .

It should be noted that, referring to FIG. 3 , the above-mentioned refrigerant heat exchanger 16 can be specifically designed as a capillary refrigerant coil structure. At this time, the corresponding first refrigerant interface 14 and second refrigerant interface 15 are generally preferably capillary tubes. The way of forming a capillary refrigerant coil makes the refrigerant heat exchanger 16 take up less space, which helps to save the internal space of the energy storage battery, and compared with the heat transfer capacity of water, the heat transfer capacity of the capillary refrigerant coil stronger.

In a further embodiment, referring to FIG. 3 , the above-mentioned capillary refrigerant coils can be specifically designed to be arranged in a zigzag manner, and cover the entire gap distribution surface of the gaps in which the battery modules 2 are arranged. By designing this structural form, compared with the traditional "air cooling" method, it can effectively avoid the heat dissipation or poor heating caused by the large wind resistance difference between battery modules or battery clusters when the air is convected through the air duct. The problem of uniformity can better ensure the uniformity of heat exchange of the battery module 2 . Of course, it can be understood that the design of the capillary refrigerant coil in a zigzag structure is only an example of the embodiment of the present invention. In the actual application process, it can also be designed in other structural forms, and no more specific limitations are made here. .

In some more specific embodiments, referring to FIG. 3 , the refrigerant heat exchanger 16 may further include a coil fixing bracket 27 on which the capillary refrigerant coil is fixed. The layout and installation of the capillary refrigerant coils are more convenient by designing the coil fixing bracket 27. For example, the specific structural form of the coil fixing bracket 27 can adopt the structure of a metal grid frame, and the capillary refrigerant coil is bound to the metal grid. As for the frame parts, in the actual application process, the corresponding structural form can be selected according to the actual needs, and no more specific limitations are made here.

In some other specific embodiments, referring to Fig. 1 and Fig. 2, the above-mentioned energy storage battery may specifically include an energy storage casing 4 and a structural support 5 arranged in the energy storage casing 4, wherein the structural support 5 stores energy The inner cavity of the casing 4 is divided into a main unit area and a battery area, the air conditioner main unit 22 is installed in the main unit area, and the battery module 2 and the refrigerant heat exchanger 16 are arranged in the battery area. Through the arrangement of the structural support 5, on the one hand, it can play a certain role in supporting and strengthening the energy storage shell 4, and on the other hand, it can also play a good role in partition isolation, which can avoid the impact of the air conditioner host 22 on the battery module 2 as much as possible. The temperature environment interferes. Of course, those skilled in the art should be able to understand that, the structural support 5 should be designed with an opening through which the refrigerant circulation pipeline 18 passes.

In a further embodiment, referring to Fig. 2, the above-mentioned host area can also be equipped with supporting equipment arranged in conjunction with the energy storage battery, and the supporting equipment can specifically include the energy storage converter 23, the power distribution cabinet 24, the local controller 25 and the fire protection Device 26 is at least one of these four types of equipment. By arranging these supporting equipment in the host area, the integrity and comprehensiveness of the energy storage battery are improved.

In some more specific embodiments, referring to FIG. 1, in order to facilitate the connection and arrangement of the refrigerant circulation pipeline 18 and the refrigerant heat exchanger 16, the above-mentioned refrigerant inlet and refrigerant outlet can be designed to be located at the top of the refrigerant heat exchanger 16. . Of course, it can be understood that the way of designing both the refrigerant inlet and the refrigerant outlet on the top of the refrigerant heat exchanger 16 is only an example of the embodiment of the present invention, and other locations can also be selected and arranged according to actual needs during actual application. No more specific limitation is made here.

In addition, the utility model also provides an energy storage battery, including a thermal management system, wherein the thermal management system is the thermal management system of the energy storage battery described in any one of the solutions above. Since the above thermal management system has the aforementioned technical effects, the energy storage battery with the thermal management system should also have corresponding technical effects, which will not be repeated here.

It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can.

It should be understood that if "system", "device", "unit" and/or "module" are used in this application, it is only a method for distinguishing different components, elements, parts, parts or assemblies of different levels. However, such words may be replaced by other expressions if they serve the same purpose.

As indicated in this application and claims, the terms "a", "an", "an" and/or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements. An element qualified by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or device that includes the element.

Among them, in the description of the embodiments of this application, unless otherwise specified, "/" means or means, for example, A/B can mean A or B; "and/or" in this article is only a description of associated objects The association relationship of indicates that there may be three kinds of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. In addition, in the description of the embodiments of the present application, "plurality" refers to two or more than two.

Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

If a flow chart is used in the present application, the flow chart is used to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order. Instead, various steps may be processed in reverse order or simultaneously. At the same time, other operations can be added to these procedures, or a certain step or steps can be removed from these procedures.

In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (15)

1. A heat management system for an energy storage battery, comprising: The air conditioner host (22) has a refrigerant circulation pipeline (18); The refrigerant heat exchanger (16) is connected in series with the refrigerant circulation pipeline (18) and arranged in the arrangement gap of the battery modules (2) of the energy storage battery. 2. The thermal management system of an energy storage battery according to claim 1, wherein there are multiple thermal management areas in the energy storage battery, each of the thermal management areas has a number of the arrangement gaps and the Described refrigerant heat exchanger (16). 3. The thermal management system of an energy storage battery according to claim 2, characterized in that, the refrigerant circulation pipeline (18) comprises a first refrigerant pipeline (18a) and a second refrigerant pipeline (18b), so The refrigerant heat exchanger (16) includes a first refrigerant interface (14) communicated with the first refrigerant pipeline (18a) and a second refrigerant interface (15) communicated with the second refrigerant pipeline (18b) ; Wherein, one of the first refrigerant interface (14) and the second refrigerant interface (15) is a refrigerant inlet, and the other is a refrigerant outlet. 4. The thermal management system of the energy storage battery according to claim 3, characterized in that, the first refrigerant pipeline (18a) includes a first refrigerant main pipe (18a1) and corresponds to the thermal management area one by one. Arranged first refrigerant branch pipe (18a2), one end of the first refrigerant branch pipe (18a2) communicates with the first refrigerant main pipe (18a1), and the other end of the first refrigerant branch pipe (18a2) passes through The first refrigerant sub-collector (12) communicates with each of the first refrigerant interfaces (14) in the corresponding thermal management area. 5. The thermal management system of an energy storage battery according to claim 4, characterized in that, when the first refrigerant interface (14) is a refrigerant inlet, the first refrigerant main pipe (18a1) is provided with a second A throttle valve (9) and/or a second throttle valve (11) is arranged on the first refrigerant branch pipe (18a2). 6. The heat management system of an energy storage battery according to claim 3 or 4, characterized in that, the second refrigerant pipeline (18b) includes a second refrigerant dry pipe (18b1) and a A correspondingly arranged second refrigerant branch pipe (18b2), one end of the second refrigerant branch pipe (18b2) communicates with the second refrigerant main pipe (18b1), and the other end of the second refrigerant branch pipe (18b2) One end communicates with each of the second refrigerant interfaces (15) in the corresponding thermal management area through the second refrigerant sub-collector (13). 7. The thermal management system of an energy storage battery according to claim 6, characterized in that, when the second refrigerant interface (15) is a refrigerant inlet, the second refrigerant main pipe (18b1) is provided with a first A throttle valve and/or the second refrigerant branch pipe (18b2) is provided with a second throttle valve. 8. The thermal management system of an energy storage battery according to claim 1, characterized in that, the battery module (2) comprises a plurality of single cells (1) arranged sequentially in a line shape in the horizontal plane, and a plurality of The battery modules (2) are stacked to form a battery cluster (3), and the battery clusters (3) are arranged in rows at intervals, and any two adjacent battery clusters (3) are arranged in the inter-column gap. The refrigerant heat exchanger (16). 9. The heat management system of an energy storage battery according to claim 1, wherein the refrigerant heat exchanger (16) comprises a capillary refrigerant coil. 10. The thermal management system of the energy storage battery according to claim 9, characterized in that, the capillary refrigerant coils are arranged in a zigzag shape and cover the arrangement gap of the battery module (2) where they are located The entire gap distribution surface. 11. The heat management system of an energy storage battery according to claim 9, characterized in that, the refrigerant heat exchanger (16) further comprises a coil fixing bracket (27), and the capillary refrigerant coil is fixed on the On the coil fixing bracket (27). 12. The thermal management system of an energy storage battery according to claim 1, characterized in that, the energy storage battery comprises an energy storage casing (4) and a structural support arranged in the energy storage casing (4) (5), the structural bracket (5) divides the inner cavity of the energy storage housing (4) into a main unit area and a battery area, the air conditioner main unit (22) is installed in the main unit area, and the battery module The group (2) and the refrigerant heat exchanger (16) are arranged in the battery area. 13. The thermal management system of the energy storage battery according to claim 12, characterized in that, the host area is also equipped with supporting equipment arranged in conjunction with the energy storage battery, and the supporting equipment includes an energy storage converter (23), distribution cabinet (24), local controller (25) and fire fighting device (26) at least one of these four kinds of equipment. 14. The heat management system of an energy storage battery according to any one of claims 1-5 and 7-13, characterized in that, both the refrigerant inlet and the refrigerant outlet are located at the sides of the refrigerant heat exchanger (16). top. 15. An energy storage battery, comprising a thermal management system, wherein the thermal management system is the thermal management system of an energy storage battery according to any one of claims 1-14.

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