CN219575745U

CN219575745U - Battery and energy storage device thereof

Info

Publication number: CN219575745U
Application number: CN202320364860.8U
Authority: CN
Inventors: 王南
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-08-22
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses a battery and an energy storage device thereof, the battery comprises: a housing having an accommodation space; the battery cell assembly is arranged in the accommodating space; the cooling component is arranged in the accommodating space and used for cooling the battery cell assembly; and the cooling liquid conveying part is communicated with the cooling part, the cooling liquid conveying part is provided with a weak part, the battery is provided with a detection part, and when the detection part detects that the battery meets the thermal runaway condition, the cooling liquid conveying pressure of the cooling liquid conveying part can be increased to break the weak part. When the battery of the utility model is out of control, the battery can be quickly extinguished and cooled, and the safety performance is improved.

Description

Battery and energy storage device thereof

Technical Field

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

Background

At present, when thermal runaway occurs in the battery, no fire extinguishing facility exists temporarily, and only aerogel and an exhaust channel are used for exhausting, so that the thermal runaway is spread, and the thermal runaway cannot be controlled.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery to solve the problem of thermal runaway spreading and uncontrollable in the prior art.

The utility model also aims to provide an energy storage device for applying the battery.

A battery according to an embodiment of the present utility model includes: a housing having an accommodation space; the battery cell assembly is arranged in the accommodating space; the cooling component is arranged in the accommodating space and used for cooling the battery cell assembly; and the cooling liquid conveying part is communicated with the cooling part, the cooling liquid conveying part is provided with a weak part, the battery is provided with a detection part, and when the detection part detects that the battery meets a thermal runaway condition, the cooling liquid conveying pressure of the cooling liquid conveying part can be increased to break the weak part.

According to the battery provided by the embodiment of the utility model, when the detection piece arranged on the battery detects that the battery starts to be out of control, the cooling liquid conveying pressure of the cooling liquid conveying component in the battery can be increased to break the weak part, so that a large amount of cooling liquid submerges the shell, the battery can be rapidly extinguished and cooled, and the safety of the battery is improved.

In some embodiments, the electric core assembly is a multiunit, multiunit electric core assembly is along the length direction of casing interval sets up, the coolant conveying part includes: the first pipeline is arranged on one side of the battery cell assembly along the width direction of the shell; and the second pipeline extends along the width direction of the shell, the second pipeline is communicated with the first pipeline, and the weak part is arranged on the second pipeline.

In some embodiments, the second pipeline is disposed between any two adjacent groups of the cell assemblies.

In some embodiments, the weak portion is provided on the second pipe, and the weak portions are provided at intervals along the length direction of the second pipe.

In some embodiments, the number of weak portions is equal to and corresponds to the number of the cell assemblies in each group of the cell assemblies.

In some embodiments, the cell assembly is provided with a pressure relief portion, and the pressure relief portion is opposite to the weak portion.

In some embodiments, the first pipeline is a square pipe, the second pipeline is a round pipe, and the pipe orifice section of the first pipeline is larger than the pipe orifice section of the second pipeline.

In some embodiments, the detecting member includes a first detecting member and/or a second detecting member, where the first detecting member is disposed in the accommodating space to detect a pressure or a temperature in the housing, and the second detecting member is electrically connected to the battery cell assembly to detect a voltage of the battery cell assembly.

In some embodiments, the first detecting member detects that the pressure reaches a set value, and the delivery pressure of the coolant delivery member increases to more than 200Kpa.

The energy storage device comprises the battery. Thus, the safety performance of the energy storage device is improved.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic perspective view of a battery according to an embodiment of the present utility model;

fig. 2 is a schematic view of a portion of a battery structure in an embodiment of the utility model;

FIG. 3 is an enlarged view of section I of FIG. 2 in accordance with the present utility model;

FIG. 4 is an enlarged view of section II of FIG. 2 in accordance with the present utility model;

fig. 5 is a schematic view of a battery part structure at another angle in the embodiment of the utility model.

Reference numerals:

100. a battery;

10. a housing;

20. a cell assembly; 201. a pressure relief portion;

30. a cooling member; 301. a liquid inlet; 302. a liquid outlet;

40. a cooling liquid conveying member; 401. a first pipeline; 402. a second pipeline; 4021. a weak portion.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.

As shown in fig. 1 and 2, a battery 100 according to an embodiment of the present utility model includes: the battery cell assembly 20, the cooling member 30, and the cooling liquid delivery member 40.

The housing 10 has an accommodation space; the cell assembly 20 is arranged in the accommodating space; the cooling part 30 is provided in the receiving space for cooling the cell assembly 20; the cooling liquid delivery member 40 communicates with the cooling member 30, the cooling liquid delivery member 40 has a weak portion 4021, and the battery 100 has a detecting element, and when the detecting element detects that the battery 100 satisfies a thermal runaway condition, the cooling liquid delivery pressure of the cooling liquid delivery member 40 can be increased to break the weak portion 4021.

It is understood that the cooling fluid enters the cooling member 30 from the cooling fluid delivery member 40 to cool the cell assembly 20. When the battery 100 starts to be thermally out of control, the detecting member provided on the battery 100 detects the thermal out of control condition, and the pressure of the coolant in the coolant conveying member 40 increases, so that the pressure received by the coolant conveying member 40 increases, the weak portion 4021 provided therein is pressed and broken to form a spray port, and the coolant is allowed to flow out from the spray port to extinguish the fire and cool the battery 100. Specifically, the cooling member 30 may be a liquid cooling plate.

According to the battery 100 of the embodiment of the utility model, when the detecting member provided on the battery 100 detects that the battery 100 starts thermal runaway, the cooling liquid conveying pressure of the cooling liquid conveying member 40 in the battery 100 can be increased to break the weak portion 4021, so that a large amount of cooling liquid submerges the casing 10, the battery 100 can be quickly extinguished and cooled, and the safety of the battery 100 is improved.

In some embodiments, referring to fig. 2, the plurality of groups of the battery cell assemblies 20 are arranged at intervals along the length direction of the housing 10, the cooling liquid conveying component 40 includes a first pipeline 401 and a second pipeline 402, and the first pipeline 401 is arranged at one side of the battery cell assembly 20 along the width direction of the housing 10; the second tube 402 extends in the width direction of the housing 10, the second tube 402 communicates with the first tube 401, and the weak portion 4021 is provided on the second tube 402. It is understood that the first pipe 401 is a main pipe, and the coolant flows from the first pipe 401 into the second pipe 402. When thermal runaway occurs, the weak portion 4021 on the second pipeline 402 is damaged, and a spraying port is formed, so that the cooling liquid is flushed out from the spraying port to extinguish fire and cool.

In some embodiments, referring to fig. 2 and 3, a second conduit 402 is provided between any two adjacent sets of cell assemblies 20. It can be understood that by the arrangement, the fire extinguishing time is shortened, and the high-efficiency fire extinguishing and cooling can be performed.

In some embodiments, the weaknesses 4021 are provided in plurality on the second tube 402, and the weaknesses 4021 are provided at intervals along the length of the second tube 402. It can be appreciated that the second pipeline 402 may be provided with a plurality of weak portions 4021, and when thermal runaway occurs, the plurality of weak portions 4021 may be broken simultaneously to form a plurality of spraying ports, so that the cooling liquid may be sprayed from the plurality of spraying ports, thereby further improving the fire extinguishing effect.

In some embodiments, the number of weaknesses 4021 is equal to and corresponds to the number of cell assemblies 20 in each set of cell assemblies 20. It will be appreciated that each cell assembly 20 corresponds to a weak portion 4021, and that each cell assembly 20 can ensure rapid cooling of the coolant to extinguish the fire in the event of thermal runaway.

In some embodiments, referring to fig. 5, a pressure relief portion 201 is provided on the cell assembly 20, where the pressure relief portion 201 is disposed opposite the weak portion 4021. It can be understood that with the above arrangement, when thermal runaway occurs, the pressure relief portion 201 may spray flame, and when the temperature rises to a certain temperature, the weak portion 4021 of the second pipe 402 may be broken, so that a large amount of coolant may flow out to extinguish the fire. Specifically, the pressure relief portion 201 may be an explosion-proof valve.

In some embodiments, referring to fig. 2, the first pipe 401 is a square pipe, the second pipe 402 is a round pipe, and the orifice cross section of the first pipe 401 is larger than the orifice cross section of the second pipe 402. It can be understood that with the above arrangement, the pressure will increase instantaneously when the coolant enters the second pipe 402 from the first pipe 401, so that the weak portion 4021 of the second pipe 402 is more easily broken when thermal runaway occurs.

In some embodiments, the detecting member includes a first detecting member disposed in the accommodating space to detect the pressure or temperature in the housing 10 and/or a second detecting member electrically connected to the cell assembly 20 to detect the voltage of the cell assembly 20. It will be appreciated that battery 100 has a first sensing member or a second sensing member that can be detected in advance when thermal runaway occurs, so that the cooling fluid pressure increases, damaging second conduit 402. Specifically, the first detecting member may be a pressure sensor or a temperature sensor, and the second detecting member may be a voltage sensor.

In some embodiments, the delivery pressure of the coolant delivery component 40 increases to greater than 200Kpa when the first sensing element senses that the pressure reaches the set point. It is understood that the weak portion 4021 of the second tube 402 is broken when the delivery pressure increases to greater than 200Kpa.

In some embodiments, referring to fig. 2 and 4, the cooling member 30 is provided with a liquid inlet 301 and a liquid outlet 302. It will be appreciated that by communicating the inlet 301 and outlet 302 with the first conduit 401, cooling fluid is allowed to flow from the first conduit 401 into the cooling member 30.

The energy storage device according to the embodiment of the utility model includes the battery 100 described above. Thus, the safety performance of the energy storage device is improved.

One embodiment of the battery 100 of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, a battery 100 according to an embodiment of the present utility model includes: the battery cell assembly 20, the cooling member 30, and the cooling liquid delivery member 40.

The housing 10 has an accommodation space; the cell assembly 20 is arranged in the accommodating space; the cooling component 30 is disposed in the accommodating space and is used for cooling the battery cell assembly 20, and the cooling component 30 is specifically a liquid cooling plate; the cooling liquid delivery member 40 communicates with the cooling member 30, the cooling liquid delivery member 40 has a weak portion 4021, and the battery 100 has a detecting element, and when the detecting element detects that the battery 100 satisfies a thermal runaway condition, the cooling liquid delivery pressure of the cooling liquid delivery member 40 can be increased to break the weak portion 4021.

The six groups of the battery cell assemblies 20 are arranged at intervals along the length direction of the shell 10, the cooling liquid conveying component 40 comprises a first pipeline 401 and a second pipeline 402, and the first pipeline 401 is arranged at one side of the battery cell assembly 20 along the width direction of the shell 10; the second tube 402 extends in the width direction of the housing 10, the second tube 402 communicates with the first tube 401, and the weak portion 4021 is provided on the second tube 402.

A second conduit 402 is provided between any two adjacent sets of cell assemblies 20. The cell assembly 20 is provided with a pressure relief part 201, the pressure relief part 201 is an explosion-proof valve, and the explosion-proof valve is arranged opposite to the weak part 4021. The first pipeline 401 is a square pipe, the second pipeline 402 is a round pipe, and the pipe orifice section of the first pipeline 401 is larger than the pipe orifice section of the second pipeline 402.

The detecting member is a first detecting member, specifically a pressure sensor, and the first detecting member is disposed in the accommodating space to detect the pressure in the housing 10. When the first detecting member detects that the pressure reaches the set value, the delivery pressure of the coolant delivery member 40 is increased to more than 200Kpa.

In the description of the present specification, reference to the terms "some embodiments," "optionally," "further," 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, comprising:

a housing (10), the housing (10) having an accommodation space;

the battery cell assembly (20), the said battery cell assembly (20) is set up in the said accommodation space;

a cooling member (30), wherein the cooling member (30) is arranged in the accommodating space and is used for cooling the battery cell assembly (20);

and a cooling liquid conveying component (40), wherein the cooling liquid conveying component (40) is communicated with the cooling component (30), the cooling liquid conveying component (40) is provided with a weak part (4021), the battery is provided with a detection piece, and when the detection piece detects that the battery meets the thermal runaway condition, the cooling liquid conveying pressure of the cooling liquid conveying component (40) can be increased to break the weak part (4021).

2. The battery according to claim 1, wherein the cell assemblies (20) are provided in plural groups, the plural groups of the cell assemblies (20) being disposed at intervals along a length direction of the housing (10), the coolant conveying member (40) comprising:

a first pipe (401), wherein the first pipe (401) is arranged at one side of the battery cell assembly (20) along the width direction of the shell (10);

and a second pipeline (402), wherein the second pipeline (402) extends along the width direction of the shell (10), the second pipeline (402) is communicated with the first pipeline (401), and the weak part (4021) is arranged on the second pipeline (402).

3. The battery according to claim 2, wherein the second conduit (402) is provided between any two adjacent groups of the cell assemblies (20).

4. The battery according to claim 2, wherein the weak portion (4021) is provided in plural on the second pipe (402), and the weak portions (4021) are provided in plural at intervals along the length of the second pipe (402).

5. The battery according to claim 4, wherein the number of weak portions (4021) is equal to and corresponds to the number of the cell assemblies (20) in each group of the cell assemblies (20).

6. The battery according to claim 5, wherein a pressure release portion (201) is provided on the cell assembly (20), and the pressure release portion (201) is disposed opposite to the weak portion (4021).

7. The battery according to claim 2, wherein the first pipe (401) is a square pipe, the second pipe (402) is a round pipe, and a pipe orifice section of the first pipe (401) is larger than a pipe orifice section of the second pipe (402).

8. The battery according to claim 1, characterized in that the detecting member comprises a first detecting member provided in the accommodation space to detect the pressure or temperature in the housing (10) and/or a second detecting member electrically connected to the cell assembly (20) to detect the voltage of the cell assembly (20).

9. The battery according to claim 8, wherein the delivery pressure of the coolant delivery member (40) is increased to more than 200Kpa when the first detection member detects that the pressure reaches a set value.

10. An energy storage device comprising a battery according to any one of claims 1-9.