Energy storage battery PACK structure

Abstract

The utility model provides an energy storage battery PACK structure. The energy storage battery PACK structure comprises a gas storage tank, a water storage tank, a gas-water conversion valve and an energy storage cabinet, a plurality of single battery boxes are arranged in the energy storage cabinet and are arranged from top to bottom; a gas-water inlet is formed in the side surface, close to the cabinet door of the energy storage cabinet, of each single battery box; the gas storage tank is communicated with the gas-water conversion valve through a first conveying pipe; the water storage tank is communicated with the gas-water conversion valve through a second conveying pipe; the gas-water conversion valve is communicated with each gas-water inlet through a third conveying pipe; a gas-water outlet is formed in the side surface, far away from the cabinet door of the energy storage cabinet, of each single battery box, and the gas-water outlets are opposite to the gas-water inlets; and each gas-water outlet is communicated with the outside through a fourth conveying pipe. According to the invention, rapid and effective fire extinguishing is carried out by adopting a secondary fire-fighting scheme, and the safety performance of the energy storage cabinet can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage batteries, and in particular relates to an energy storage battery PACK structure. Background Art

[0002] At present, the construction scale of single energy storage projects is getting larger and larger, the number of large-scale energy storage projects is increasing, and more and more energy storage technologies are being used on the power supply side, the grid side, and the industrial and commercial user side. The potential safety hazards of projects are increasing, and the pressure on safe operation of energy storage is also increasing.

[0003] In the existing energy storage field, heptafluoropropane / perfluorohexanone fire extinguishing gas is generally installed inside the container. When thermal runaway occurs inside the battery, the entire container is sprayed with fire extinguishing gas (heptafluoropropane / perfluorohexanone). Due to the large volume of the entire container and the limited amount of gas released, the fire cannot be extinguished quickly and in time. There are a large number of batteries inside the container, and heat spread is very likely to occur, posing a major safety hazard. Utility Model Content

[0004] The embodiment of the utility model provides an energy storage battery PACK structure, aiming to solve the problems that the existing energy storage battery cannot quickly and timely extinguish fire, is prone to heat spread, and has great safety hazards.

[0005] To achieve the above-mentioned purpose, the embodiment of the utility model provides an energy storage battery PACK structure, including a gas storage tank, a water storage tank, a gas-water conversion valve and an energy storage cabinet; a plurality of single battery boxes are arranged in the energy storage cabinet, and the plurality of single battery boxes are arranged from top to bottom; a gas-water inlet is arranged on the side of each single battery box close to the door of the energy storage cabinet; the gas storage tank is connected to the gas-water conversion valve through a first delivery pipe; the water storage tank is connected to the gas-water conversion valve through a second delivery pipe; the gas-water conversion valve is connected to each of the gas-water inlets through a third delivery pipe;

[0006] A gas-water outlet is arranged on the side of each single battery box away from the energy storage cabinet door, and the gas-water outlet is arranged opposite to the gas-water inlet; each gas-water outlet is connected to the outside through a fourth delivery pipe.

[0007] As a preferred embodiment, the third delivery pipe includes a third main pipe and multiple third branch pipes, and the third main pipe is respectively connected to the gas-water conversion valve and each of the third branch pipes; the third branch pipes are connected to the gas-water inlet, and the third branch pipes are arranged one-to-one with the gas-water inlet.

[0008] As a preferred embodiment, each of the third branch pipes is provided with an independent first fire extinguishing switch valve at one end close to the third main pipe.

[0009] As a preferred embodiment, the fourth delivery pipe includes a fourth main pipe and multiple fourth branch pipes, and the fourth main pipe is connected to each of the fourth branch pipes respectively; the fourth branch pipes are connected to the gas-water outlet, and the fourth branch pipes are arranged one-to-one with the gas-water outlets.

[0010] As a preferred embodiment, each of the fourth branch pipes is provided with an independent second fire extinguishing switch valve at one end close to the fourth main pipe.

[0011] As a preferred embodiment, on the same single battery box, the distance between the gas-water inlet and the top of the energy storage cabinet is smaller than the distance between the gas-water outlet and the top of the energy storage cabinet, and the gas-water inlet and the gas-water outlet are staggered.

[0012] As a preferred embodiment, the gas-water conversion valve is provided with a water inlet, a gas inlet and an outlet, the water inlet is connected to the water storage tank via the first delivery pipe, the gas inlet is connected to the gas storage tank via the second delivery pipe; the outlet is connected to the third main pipe.

[0013] As a preferred embodiment, each of the first fire extinguishing switch gate valve and each of the second fire extinguishing switch gate valve is an electronic valve made of a temperature-sensitive material. As a preferred embodiment, a temperature-sensing probe is provided in each of the single battery boxes.

[0014] As a preferred embodiment, the energy storage cabinet is a cabinet with an internal pressure of ≥1.5Mpa; the gas storage tank stores heptafluoropropane gas or perfluorohexanone gas; and the water storage tank stores fire water.

[0015] The structure of the present application sets an independent two-level fire protection system on each single battery box. When thermal runaway occurs in an individual single battery box, a two-level fire protection scheme can be used to quickly and effectively extinguish the fire. The first level uses firefighting gas for fire extinguishing and the second level uses firefighting water for cooling. At the same time, the internal pressure of the single battery box can be released. The single battery boxes are controlled separately. When thermal runaway occurs inside one of the single battery boxes, it will not affect the adjacent single battery box, thereby effectively preventing heat spread caused by thermal radiation, and can effectively improve the safety performance of the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of an energy storage battery PACK structure according to an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 A structural schematic diagram of the energy storage battery PACK structure from another perspective. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] Specifically, Figure 1 to Figure 2 As shown, the embodiment of the utility model provides an energy storage battery PACK structure, including a gas storage tank 10, a water storage tank 20, a gas-water conversion valve 30 and an energy storage cabinet 40; a plurality of single battery boxes 41 are arranged in the energy storage cabinet 40, and the plurality of single battery boxes 41 are arranged from top to bottom; each of the single battery boxes 41 is provided with a gas-water inlet 411 on the side close to the cabinet door 42 of the energy storage cabinet 40; the gas storage tank 10 is connected to the gas-water conversion valve 30 through a first delivery pipe 50; the water storage tank 20 is connected to the gas-water conversion valve 30 through a second delivery pipe 60; the gas-water conversion valve 30 is connected to each of the gas-water inlets 411 through a third delivery pipe 70;

[0025] Each of the single battery boxes 41 is provided with a gas-water outlet 412 on the side away from the door 42 of the energy storage cabinet 40 , and the gas-water outlet 412 is arranged opposite to the gas-water inlet 411 ; each of the gas-water outlets 412 is connected to the outside through a fourth delivery pipe 80 .

[0026] As a preferred embodiment, the third delivery pipe 70 includes a third main pipe 71 and a plurality of third branch pipes 72. The third main pipe 71 is connected to the gas-water conversion valve 30 and each of the third branch pipes 72 respectively. The third branch pipes 72 are connected to the gas-water inlet 411, and the third branch pipes 72 are arranged one-to-one with the gas-water inlet 411. That is, one third branch pipe 72 is arranged corresponding to each gas-water inlet 411.

[0027] As a preferred embodiment, each of the third branch pipes 72 is provided with an independent first fire extinguishing switch gate valve 90 at one end close to the third main pipe 71 .

[0028] As a preferred embodiment, the fourth delivery pipe 80 includes a fourth main pipe 81 and a plurality of fourth branch pipes 82, wherein the fourth main pipe 81 is connected to each of the fourth branch pipes 82; the fourth branch pipes 82 are connected to the gas-water outlet 412, and the fourth branch pipes 82 are arranged one-to-one with the gas-water outlet 412. That is, one fourth branch pipe 82 is arranged corresponding to each gas-water outlet 412. In the embodiment of the present application, the fourth main pipe 81 is connected to the outside at one end close to the bottom of the energy storage cabinet 40.

[0029] As a preferred embodiment, each of the fourth branch pipes 82 is provided with an independent second fire extinguishing switch gate valve 100 at one end close to the fourth main pipe 81 .

[0030] As a preferred embodiment, on the same single battery box 41, the distance between the air-water inlet 411 and the top of the energy storage cabinet 10 is smaller than the distance between the air-water outlet 412 and the top of the energy storage cabinet 40, and the air-water inlet 411 and the air-water outlet 412 are staggered.

[0031] As a preferred embodiment, the gas-water conversion valve 30 is provided with a water inlet 31, a gas inlet 32 ​​and an outlet 33. The water inlet 31 is connected to the water storage tank 20 through the first delivery pipe 50, and the gas inlet 32 ​​is connected to the gas storage tank 10 through the second delivery pipe 60; the outlet 33 is connected to the third main pipe 71. In the embodiment of the present application, the water inlet 31, the gas inlet 32 ​​and the outlet 33 are integrally formed.

[0032] As a preferred embodiment, each of the first fire extinguishing switch gate valves 90 and each of the second fire extinguishing switch gate valves 100 is an electronic valve made of a temperature-sensitive material.

[0033] As a preferred embodiment, a temperature sensing probe (not marked in the figure) is provided in each of the single battery boxes 41 .

[0034] As a preferred embodiment, the energy storage cabinet 40 is a cabinet with an internal pressure of ≥1.5Mpa; the gas storage tank 10 stores heptafluoropropane gas or perfluorohexanone gas; and the water storage tank 20 stores fire water.

[0035] Under normal working conditions, the fire protection of each single battery box is independently controlled by each first fire extinguishing switch gate valve and each second fire extinguishing switch gate valve. When the internal temperature of the single battery box reaches the set temperature 1 (for example, 100°C), the single battery box is powered off, and at the same time, the gas inlet of the gas-water conversion valve is opened, the first fire extinguishing switch gate valve is opened, and the second fire extinguishing switch gate valve is opened, and the fire extinguishing gas begins to be released to extinguish the fire; when the internal temperature of the single battery box rises to the set temperature 2 (for example, 150°C), the water inlet of the gas-water conversion valve is opened, and the fire water and fire extinguishing gas are simultaneously delivered to the single battery box, and the fire water enters to cool the inside of the single battery box.

[0036] The structure of the present application sets an independent two-level fire protection system on each single battery box. When thermal runaway occurs in an individual single battery box, a two-level fire protection scheme can be used to quickly and effectively extinguish the fire. The first level uses firefighting gas for fire extinguishing and the second level uses firefighting water for cooling. At the same time, the internal pressure of the single battery box can be released. The single battery boxes are controlled separately. When thermal runaway occurs inside one of the single battery boxes, it will not affect the adjacent single battery box, thereby effectively preventing heat spread caused by thermal radiation, and can effectively improve the safety performance of the energy storage cabinet.

[0037] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0038] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy storage battery PACK structure, characterized in that: It comprises a gas storage tank, a water storage tank, a gas-water conversion valve and an energy storage cabinet; a plurality of single battery boxes are arranged in the energy storage cabinet, and the plurality of single battery boxes are arranged from top to bottom; a gas-water inlet is arranged on the side of each single battery box close to the door of the energy storage cabinet; the gas storage tank is connected to the gas-water conversion valve through a first delivery pipe; the water storage tank is connected to the gas-water conversion valve through a second delivery pipe; the gas-water conversion valve is connected to each gas-water inlet through a third delivery pipe; A gas-water outlet is arranged on the side of each single battery box away from the energy storage cabinet door, and the gas-water outlet is arranged opposite to the gas-water inlet; each gas-water outlet is connected to the outside through a fourth delivery pipe.

2. The energy storage battery PACK structure according to claim 1, characterized in that: The third delivery pipe includes a third main pipe and multiple third branch pipes. The third main pipe is connected to the gas-water conversion valve and each of the third branch pipes respectively; the third branch pipes are connected to the gas-water inlet, and the third branch pipes are arranged one-to-one with the gas-water inlet.

3. The energy storage battery PACK structure according to claim 2, characterized in that: An independent first fire extinguishing switch gate valve is arranged at one end of each of the third branch pipes close to the third main pipe.

4. The energy storage battery PACK structure according to claim 3, characterized in that: The fourth delivery pipe includes a fourth main pipe and a plurality of fourth branch pipes, the fourth main pipe is connected to each of the fourth branch pipes respectively; the fourth branch pipes are connected to the gas-water outlets, and the fourth branch pipes are arranged in one-to-one correspondence with the gas-water outlets.

5. The energy storage battery PACK structure according to claim 4, characterized in that: An independent second fire extinguishing switch gate valve is arranged at one end of each of the fourth branch pipes close to the fourth main pipe.

6. The energy storage battery PACK structure according to claim 1, characterized in that: On the same single battery box, the distance between the gas-water inlet and the top of the energy storage cabinet is smaller than the distance between the gas-water outlet and the top of the energy storage cabinet, and the gas-water inlet and the gas-water outlet are staggered.

7. The energy storage battery PACK structure according to claim 2, characterized in that: The gas-water conversion valve is provided with a water inlet, a gas inlet and an outlet. The water inlet is connected to the water storage tank through the first delivery pipe, and the gas inlet is connected to the gas storage tank through the second delivery pipe; the outlet is connected to the third main pipe.

8. The energy storage battery PACK structure according to claim 5, characterized in that: Each of the first fire extinguishing switch gate valves and each of the second fire extinguishing switch gate valves are electronic valves made of temperature-sensitive materials.

9. The energy storage battery PACK structure according to claim 1, characterized in that: A temperature sensing probe is arranged in each of the single battery boxes.

10. The energy storage battery PACK structure according to claim 1, characterized in that: The energy storage cabinet is a cabinet with an internal pressure of ≥1.5Mpa; the gas storage tank stores heptafluoropropane gas or perfluorohexanone gas; and the water storage tank stores fire water.

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