CN216488248U

CN216488248U - Energy storage device

Info

Publication number: CN216488248U
Application number: CN202122932634.9U
Authority: CN
Inventors: 王学辉; 金秋; 陈小波
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-10
Anticipated expiration: 2031-11-26
Also published as: WO2023093233A1; CN116830360A

Abstract

The application provides an energy storage device, includes: the heat exchange mechanism is internally provided with a channel for flowing heat exchange liquid; the heat exchange liquid is used for flowing through the heat exchange mechanism so as to adjust the temperature of the battery cells; the fire-fighting mechanism is connected to the heat exchange mechanism and is in fluid communication with the heat exchange mechanism, and the fire-fighting mechanism is used for spraying the heat exchange liquid towards the battery cell when the battery cell is out of control due to heat. Through being linked together fire control mechanism and heat transfer mechanism, make fire control mechanism can directly utilize the heat transfer liquid of heat transfer mechanism to carry out the fire control operation, not only ensured the fire fighting ability among the energy memory, improved energy memory's security, still effectual fire control mechanism and the heat transfer mechanism who has integrated among the current energy memory reduce owing to set up alone that fire control mechanism leads to among the energy memory that the pipeline is numerous and diverse, and the problem that available space descends in the energy memory.

Description

Energy storage device

Technical Field

The application belongs to the technical field of energy storage equipment, and particularly relates to an energy storage device.

Background

As environmental damage and resource consumption are becoming serious problems, interest in systems that can store energy and efficiently utilize the stored energy is growing. Likewise, there is growing interest in new renewable energy that causes little or no pollution (e.g., causes little pollution) during the generation of electricity. The energy storage device may be a system utilizing new renewable energy, a battery system, and an existing power system in combination with each other.

Safety issues are also a considerable problem in the development of energy storage devices. Therefore, how to enhance the safety of the energy storage device is a technical problem to be solved urgently in the battery technology.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an energy storage device, can improve the security, optimize current energy storage device's internal framework, reduces laying of fire-fighting pipeline in the energy storage device.

An embodiment of the present application provides an energy storage device, including:

the heat exchange mechanism is internally provided with a channel for flowing heat exchange liquid;

the battery pack comprises a plurality of battery monomers and is adjacent to the heat exchange mechanism, and the heat exchange liquid is used for flowing through the heat exchange mechanism so as to adjust the temperature of the battery pack;

a fire protection mechanism connected to and in fluid communication with the heat exchange mechanism, the fire protection mechanism being configured to eject the heat exchange liquid towards the battery pack when the battery pack is thermally runaway.

Adopt above-mentioned structure, through being linked together fire control mechanism and heat transfer mechanism, make fire control mechanism can directly utilize heat transfer liquid of heat transfer mechanism to carry out the fire control operation, not only ensured the fire fighting ability among the energy memory, improved energy memory's security, still effectual fire control mechanism and the heat transfer mechanism who has integrated among the current energy memory of having still, reduce because set up alone that fire control mechanism leads to among the energy memory that the pipeline is numerous and diverse, and the problem that available space descends in the energy memory.

Optionally, the energy storage device further comprises a pressurizing member, the heat-exchange liquid passes through the pressurizing member and then enters the channel, and the pressurizing member is used for increasing the pressure of the heat-exchange liquid.

By adopting the structure, the pressure of the heat exchange liquid can be increased, and the initial kinetic energy of the liquid sprayed by the spray head is ensured so as to cover the whole battery pack.

Optionally, the fire fighting mechanism comprises a nozzle and a blocking part, the nozzle is provided with an opening, and the blocking part covers the opening; the occlusion is configured to actuate to open the opening when an ambient temperature reaches a threshold.

Furthermore, the plugging part is made of temperature-sensitive materials.

Adopt above-mentioned structure, can reduce the special control assembly who establishes of shower nozzle department configuration, when the fire control operation appears needing to spray, the shutoff portion that the opening part of shower nozzle was filled can melt by oneself, makes the opening of shower nozzle open, sprays the fire control operation.

Further, the fire-fighting mechanism still include with the electric heating spare that the shutoff portion links to each other, electric heating spare is used for heating the shutoff portion.

By adopting the structure, the opening of the nozzle can be opened when the fire-fighting pipeline is required to actively spray fire-fighting operation.

Optionally, the energy storage device further comprises a box body, and the heat exchange mechanism, the fire fighting mechanism and the plurality of battery packs are all accommodated in the box body.

By adopting the structure, the fire-fighting mechanism and the heat exchange mechanism can share the heat exchange liquid, the pipeline structure in the energy storage device is reduced, the occupied space in the energy storage device is optimized, and the energy storage device can store a large amount of energy storage devices conveniently.

Optionally, the energy storage device further comprises a sensor and a control unit, the sensor and the electric heating element are electrically connected with the control unit, the sensor is used for detecting the state of the battery monomer to generate a thermal runaway alarm signal, and the control unit controls the electric heating element according to the thermal runaway alarm signal.

Adopt above-mentioned structure, can realize detecting the free state of battery to the automatic control of shutoff portion, the thermal runaway's of formation thermal runaway alarm signal can be more accurate to the thermal runaway's of group battery emergence and make the judgement to control electric heating member work, melt the shutoff portion after electric heating member temperature risees, and then make fire control mechanism work carry out fire control operation.

Furthermore, the heat exchange mechanism further comprises a liquid inlet and a liquid outlet which are communicated with the channel, and the energy storage device further comprises a liquid supply pipeline communicated with the liquid inlet and a liquid outlet pipeline communicated with the liquid outlet;

the fire-fighting mechanism is installed on at least one of the liquid supply pipeline and the liquid outlet pipeline, and the pressurizing piece is arranged on at least one of the liquid supply pipeline and the liquid outlet pipeline.

By adopting the structure, the heat exchange liquid in each heat exchange assembly in the energy storage device can be conveniently conveyed in a unified manner, the pipeline structure in the energy storage device is reduced, and the pressurizing piece is arranged, so that the liquid can be sprayed under the self pressure control of the heat exchange mechanism and also can be controlled by the pressurizing piece, the spraying pressure is improved, the spraying angle and distance are improved, and the sprayed water mist effect is achieved.

Optionally, the fire fighting mechanism further comprises a fire fighting pipe, one end of the fire fighting pipe is communicated with the channel, and the nozzle is sleeved at the other end of the fire fighting pipe.

Optionally, the heat exchange mechanism further comprises a storage tank, and the storage tank is arranged in a sinking manner along the first direction and used for storing the battery pack.

By adopting the structure, energy storage devices such as battery packs can be stably placed in the storage tank.

Furthermore, one end of the fire-fighting pipe is connected to any inner side wall of the storage tank, and extends opposite to the storage tank, a top bend is arranged at the end of the spray nozzle on the fire-fighting pipe, and the bend at the top bend enables the spray direction of the spray nozzle to face the battery pack.

Adopt above-mentioned structure, the position of inserting through the fire control pipe sets up on the inner wall of hold up tank to extend mutually back of the body with the hold up tank, can make the fire control pipe arrange energy memory in completely inside, reduce the protruding thing of energy memory week side, optimized energy memory's inside framework, secondly, through the setting of buckling of top, can adjust the extending direction of the fire control pipe other end, make its skew and first direction, spray when the shower nozzle of being convenient for sprays the region and can fully fill the fire control region.

Furthermore, the end of the fire-fighting pipe connected with the heat exchange mechanism is also provided with a bottom bending part, and the bottom bending part is bent to ensure that the fire-fighting pipe firstly extends for a distance in a plane parallel to the bottom wall of the storage tank and then extends back to the storage tank.

By adopting the structure, the end position of the fire fighting pipe communicated with the heat exchange mechanism is not extended in the first direction through the arrangement of bending the bottom, so that the heat exchange liquid in the channel can enter the fire fighting pipe conveniently.

Optionally, a mounting frame is further arranged on the periphery of the heat exchange mechanism, and the mounting frame is used for fixing the heat exchange mechanism and the mounting position.

Further, the mounting frame is provided with a mounting hole for bolting or screwing.

By adopting the structure, the heat exchange mechanism can be stably fixed with the installation position.

Optionally, the liquid inlet and the liquid outlet are arranged at intervals on the outer side wall of the heat exchange mechanism, and the liquid inlet and the liquid outlet are arranged below the mounting frame.

By adopting the structure, the liquid inlet and the liquid outlet are conveniently connected with the external pipeline, the bulges on the periphery of the energy storage device can be reduced, and the liquid inlet and the liquid outlet can be protected by the mounting frame, so that the mechanical strength of the energy storage device is improved.

Compared with the prior art, among the energy memory of this application embodiment, through being linked together fire control mechanism and heat transfer mechanism, make fire control mechanism can directly utilize the heat transfer liquid of heat transfer mechanism to carry out the fire control operation, not only ensured the fire fighting ability among the energy memory, still effectual fire control mechanism and the heat transfer mechanism who has integrated among the current energy memory reduce because set up the energy memory that fire control mechanism leads to alone that the pipeline is numerous and diverse, and the problem that available space descends in the energy memory.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic structural view of another embodiment of the present application with a battery pack removed.

Fig. 3 is a schematic structural diagram of an embodiment of a showerhead according to the present application.

Fig. 4 is a schematic structural view of another embodiment of the showerhead of the present application.

Fig. 5 is a schematic structural view of another embodiment of a showerhead according to the present application.

Fig. 6 is a schematic structural view of another embodiment of the present application with a battery pack removed.

Fig. 7 is a partial structural schematic view of the embodiment shown in fig. 2.

Fig. 8 is a schematic structural view of an embodiment of the fire fighting mechanism of the present application.

Fig. 9 is a schematic structural view of the embodiment shown in fig. 1 with the battery pack removed.

Fig. 10 is a block schematic diagram of the embodiment shown in fig. 1.

In the drawings:

11. a liquid inlet; 12. a liquid outlet; 13. a storage tank; 14. installing a frame; 15. mounting holes; 21. a fire hose; 22. a spray head; 23. top bending; 24. bottom bending; 25. a plugging section; 26. an electric heating element; 27. a fixed mount;

100. a heat exchange mechanism; 111. a liquid supply line; 112. a liquid outlet pipeline; 121. a liquid supply branch; 122. a liquid outlet branch; 200. a battery pack; 201. a battery cell; 300. a fire-fighting mechanism; 400. a control unit; 500. a sensor.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are merely used to more clearly illustrate the technical solutions of the present application, and therefore, the following embodiments are only used as examples, and the scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist, for example, a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two sets), "plural pieces" means two or more (including two pieces).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientations and positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, are not to be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the power battery is more extensive from the market development prospect and the application trend. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

Because of the characteristics of the batteries, potential safety hazards such as spontaneous combustion of the batteries and the like easily occur during centralized storage, a special energy storage device is adopted in the field at present to realize centralized storage and utilization of single batteries. Aforementioned dedicated energy memory need be for energy memory independent design fire extinguishing agent when using to introduce the battery monomer department with fire extinguishing agent through the pipeline, fire extinguishing agent needs solitary space to deposit, and the pipeline also need lay alone, and the complicated and cost of construction is higher in the in-service use.

The inventor of the present application noticed that, because of solving the aforementioned problems, in the art, an attempt is made to directly erect a fire fighting mechanism to the peripheral side supporting structure of the energy storage device, but a large number of battery cells are often stored in the actual energy storage device, the fire fighting mechanism is disposed on the peripheral side, when a fire occurs, the fire fighting medium cannot be sprayed to the deep inside of the energy storage device, the purpose of reducing the temperature of the battery pack cannot be achieved, and the risk of reburning exists.

In order to alleviate the fire control defect among the current energy memory, the applicant researches and discovers, can be through integrating heat transfer mechanism and the fire control mechanism among the energy memory, make the heat transfer liquid of long-term circulation among the heat transfer mechanism, supply the fire control mechanism to utilize when the condition of a fire appears, can show the pipeline structure who reduces among the energy memory, reduce the design degree of difficulty and erect the cost, have general suitability.

Based on the above consideration, the inventors of the present application have conducted extensive research to design an energy storage device in order to solve the safety problem in the conventional energy storage device.

In the present application, the energy storage device may be a system utilizing new renewable energy, a battery system, and an existing power system, which are combined with each other.

In this application, the battery cell may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, and the embodiment of the present application is not limited thereto. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application.

Referring to fig. 1 and 2, the first direction in the embodiment of the present application is referred to as the x-axis direction.

In some embodiments of the present application, optionally, as shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of the present application, and fig. 2 is a schematic structural diagram of another embodiment of the present application after a battery pack is removed. There is provided an energy storage device including: heat exchange mechanism 100, group battery 200 and fire control mechanism 300. The heat exchange mechanism 100 is provided with a channel for flowing a heat exchange liquid therein. The battery pack 200 comprises a plurality of battery cells 201 adjacent to the heat exchange mechanism 100, and the heat exchange liquid is used for flowing through the heat exchange mechanism 100 to adjust the temperature of the battery pack 200. Fire fighting mechanism 300 is connected to heat exchange mechanism 100 and is in fluid communication with heat exchange mechanism 100, and fire fighting mechanism 300 is used to spray heat-exchange liquid toward battery pack 200 when battery pack 200 is thermally runaway.

The heat exchange mechanism 100 may be a heat exchange plate, and a zigzag extending channel is formed therein, and any outer wall surface on which the battery pack 200 is placed exchanges heat with the battery pack 200 placed on the surface of the heat exchange mechanism 100 through heat conduction. Specifically, the heat exchanging mechanism 100 is used to cool down the battery pack 200. Specifically, the fire fighting mechanism 300 is in communication with a channel in the heat exchange mechanism 100, and the heat exchange liquid can enter the fire fighting mechanism 300. Without limitation, the heat exchange liquid may be water.

Through being linked together fire control mechanism 300 and heat transfer mechanism 100, make fire control mechanism 300 can directly utilize the heat transfer liquid of heat transfer mechanism 100 to carry out the fire control operation, not only ensured the fire fighting ability among the energy memory, improved energy memory's security, still effectual fire control mechanism 300 and the heat transfer mechanism 100 who has integrated among the current energy memory of having still, reduce because set up alone that fire control mechanism 300 leads to among the energy memory the pipeline numerous and diverse, and the problem that available space descends in the energy memory.

In some embodiments of the present application, optionally, the energy storage device further includes a pressurizing member, the heat exchange liquid passes through the pressurizing member and then enters the channel, and the pressurizing member is used for increasing the pressure of the heat exchange liquid.

Wherein, the supercharging component can be arranged at the heat exchange liquid source, namely the cooling water source. Without limitation, the pressurizing member may be disposed on any pipe between the energy storage device and the heat exchange liquid source. Without limitation, at least one pressurizing member is provided. Without limitation, the plenum may employ a drive pump, a compressor, or the like.

By adopting the structure, the pressure of the heat exchange liquid can be increased, the initial kinetic energy of the liquid sprayed by the spray head is ensured, so that the whole battery pack is covered, and the pipeline structure between the energy storage device and the heat exchange liquid source is in circulating communication, so that the whole pressurization of the internal environment can be realized by arranging the energy storage device and the heat exchange liquid source in any pipeline.

In some embodiments of the present application, optionally, as shown in fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the spray head 22 of the present application. The fire-fighting mechanism 300 comprises a nozzle 22 and a blocking part 25, wherein the nozzle 22 is provided with an opening, and the blocking part 25 covers the opening; the blocking portion 25 is configured to actuate when the ambient temperature reaches a threshold value to open the opening.

The blocking portion 25 may be a spring stopper with a temperature sensor, and may be ejected from the opening when the temperature reaches a threshold value. Specifically, the nozzle 22 is further provided with a fixing frame 27, and the fixing frame 27 is used for fixing the blocking portion 25 on the nozzle 22.

The configuration of a specially designed control component at the spray head 22 can be reduced, and the opening can be automatically opened when fire-fighting operation needs to be sprayed.

In some embodiments of the present application, optionally, as shown in fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the spray head 22 of the present application. The plugging part 25 is made of temperature-sensitive material.

The blocking portion 25 is a three-dimensional structure plugged at the opening, and may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiment of the present application. Specifically, the plugging portion 25 may be made of a material that melts at a temperature higher than 57 ℃. Without limitation, polyvinyl chloride, vinyl chloride copolymer, or the like may be used for the plugging portion 25.

By adopting the heat-sensitive material for the blocking part 25, when the ambient temperature reaches the threshold value, the coating blocking part 25 filled at the opening of the nozzle 22 can be melted by itself, so that the opening of the nozzle 22 is opened for fire-fighting operation.

In some embodiments of the present application, optionally, as shown in fig. 4 and 5, fig. 4 is a schematic structural diagram of another embodiment of the spray head 22 in the present application, and fig. 5 is a schematic structural diagram of another embodiment of the spray head 22 in the present application. The fire fighting mechanism 300 further includes an electric heating member 26 connected to the plugging portion 25, and the electric heating member 26 is used to heat the plugging portion 25.

The electric heating element 26 may be a heating wire, one end of which is connected to a power supply and the other end of which is connected to the plugging portion 25, for heating the plugging portion 25.

Referring to fig. 4, the electric heating element 26 may be a heating wire, one end of which is connected to a power supply, and the other end of which is wound around the sealing portion 25, so as to uniformly heat all parts of the sealing portion 25 during heating, thereby accelerating melting of the sealing portion 25.

Referring to fig. 5, the electric heating element 26 may be an electric heating wire, one end of which is connected to a power supply, and the other end of which is embedded inside the plugging portion 25, for uniformly heating all parts of the plugging portion 25 during heating, and firstly melting out a cavity inside the plugging portion 25, and allowing heat-exchange liquid to enter the cavity to accelerate the ejection of the plugging portion 25 out of the opening.

Through the setting of electric heating member 26, can make fire control mechanism 300 can cooperate main control spare, like Battery Management System (BMS), carry out fire-fighting operation in coordination, also can make the opening of shower nozzle 22 open when needing fire control mechanism 300 initiative to spray fire-fighting operation.

In some embodiments of the present application, optionally, as shown in fig. 6, fig. 6 is a schematic structural diagram of another embodiment of the present application after the battery pack is removed. The energy storage device further comprises a box body, and the heat exchange mechanism 100, the fire fighting mechanism 300 and the plurality of battery packs 200 are all accommodated in the box body.

Wherein, a plurality of heat transfer mechanisms 100 are arranged at intervals along a first mode in the box body, and the fire fighting mechanism 300 is arranged corresponding to the heat transfer mechanisms 100.

Referring to fig. 7, fig. 7 is a partial structural view of the embodiment shown in fig. 6. The box body is further provided with a liquid supply pipeline 111 and a liquid outlet pipeline 112, the extending direction of the liquid supply pipeline 111 and the liquid outlet pipeline 112 is approximately consistent with the arrangement mode of the heat exchange mechanism 100 in the box body, one end of the liquid supply pipeline 111 and one end of the liquid outlet pipeline 112 are connected with an external liquid supply source, such as a cooling water source, and the other end of the liquid supply pipeline 111 is communicated with a channel in the heat exchange mechanism 100, so that the heat exchange liquid is circularly output to the heat exchange mechanism 100. Specifically, the box body is further provided with a plurality of liquid supply branches 121 and liquid outlet branches 122, the liquid supply branches 121 and the liquid outlet branches 122 are respectively arranged corresponding to the heat exchange structure, one end of each of the liquid supply branches 121 and the liquid outlet branches 122 is respectively communicated with the liquid supply pipeline 111 and the liquid outlet pipeline 112, and the other end of each of the liquid supply branches 121 and the liquid outlet branches 122 is communicated with a channel in the heat exchange mechanism 100. Without limitation, the liquid supply pipe 111, the liquid outlet pipe 112, the liquid supply branch 121 and the liquid outlet branch 122 may further have pipeline valves. The arrangement of the secondary pipeline can realize the respective arrangement of each heat exchange mechanism 100.

Through the setting of box, can make fire control mechanism 300 and heat transfer mechanism 100 sharing heat transfer liquid, reduce the pipeline structure in the energy memory, optimize the occupation space in the energy memory, can be convenient for energy memory storage a large amount of devices.

In some embodiments of the present application, optionally as shown in fig. 10, fig. 10 is a block schematic diagram of the embodiment shown in fig. 1. The energy storage device further comprises a sensor 500 and a control unit 400, the sensor 500 and the electric heating element 26 are electrically connected with the control unit 400, the sensor 500 is used for detecting the state of the battery pack 200 to generate a thermal runaway alarm signal, and the control unit 400 controls the electric heating element 26 according to the thermal runaway alarm signal.

In this embodiment, through setting up sensor 500 and the control unit 400, can realize the automatic control to shutoff portion 25, detect through the state to group battery 200, the emergence of thermal runaway that generates thermal runaway alarm signal can be more accurate makes the judgement to thermal runaway to control electric heating member 26 work, melt shutoff portion 25 after electric heating member 26 temperature risees, and then make fire control mechanism 300 work carry out fire control operation

In some embodiments, the sensor 500 may be a thermal runaway detection circuit for detecting data of the battery pack 200 and generating a thermal runaway alarm signal when the data of the battery pack 200 exceeds a safety threshold.

In some embodiments, the battery pack 200 data may include one or more of the following parameters: the maximum voltage of the battery cell 201 in the battery pack 200 during charging, the actual state of charge of the battery pack 200 during charging and the charging current of the battery pack 200 during charging.

In some embodiments, the battery pack 200 data may include one or more of the following parameters: the maximum temperature of the battery cell 201 in the battery pack 200, the temperature change rate of the battery cell 201 in the battery pack 200, the difference between the maximum temperature and the minimum temperature of the battery cell 201 in the battery pack 200, the minimum voltage of the battery cell 201 in the battery pack 200, and the like.

In some embodiments, the battery pack 200 data may include one or more of the following parameters: the minimum voltage of the battery cell 201 in the battery pack 200 and the maximum temperature of the battery cell 201 in the battery pack 200, the minimum voltage of the battery cell 201 in the battery pack 200 and the temperature change rate of the battery cell 201 in the battery pack 200, the difference between the minimum voltage of the battery cell 201 in the battery pack 200 and the maximum temperature and the minimum temperature of the battery cell 201 in the battery pack 200, the temperature change rate of the battery cell 201 in the battery pack 200 and the maximum temperature of the battery cell 201 in the battery pack 200, the difference between the temperature change rate of the battery cell 201 in the battery pack 200 and the maximum temperature and the minimum temperature of the battery cell 201 in the battery pack 200, and the like.

In some embodiments, the battery pack 200 data may include a combination of the battery pack 200 data of the above embodiments.

Without limitation, in some specific embodiments, the battery pack 200 data may include a minimum voltage of the battery cell 201, a maximum temperature of the battery cell 201, and a rate of temperature change of the battery cell 201 in the battery pack 200. The judgment conditions are as follows: 1. the minimum voltage of the battery cell 201 is less than a preset voltage; 2. the highest temperature of the battery cell 201 is greater than a preset temperature; 3. when the temperature change speed of the battery monomer 201 in the battery pack 200 exceeds a preset value and the duration time exceeds a preset time, and any one of the three conditions is two, a thermal runaway alarm signal is generated, and the control unit 400 controls the electric heating element 26 to heat.

In other embodiments, the sensor 500 may be a fire sensor, such as a smoke sensor, a combustible gas concentration sensor, etc., and the control unit 400 controls the electric heating element 26 to heat if the battery pack is in a state of generating smoke, the combustible gas concentration exceeds a threshold value, etc., and generates a thermal runaway alarm signal.

Through sensor and the setting of the control unit, can realize the automatic control to shutoff portion 25, through combining the condition of a fire characteristic that the group battery 200 is inside to be hidden with the current-voltage value of group battery 200, can be more accurate make the judgement to hiding the condition of a fire, and then open the opening to carry out the fire control operation.

In some embodiments of the present application, optionally, as shown in fig. 7, fig. 7 is a partial schematic structural view of the embodiment shown in fig. 6. The heat exchange mechanism 100 further comprises a liquid inlet 11 and a liquid outlet 12 which are communicated with the channel, and the energy storage device further comprises a liquid supply pipeline 111 which is communicated with the liquid inlet 11 and a liquid outlet pipeline 112 which is communicated with the liquid outlet 12; at least one of liquid supply pipe 111 and liquid outlet pipe 112 is provided with fire fighting mechanism 300, and at least one of liquid supply pipe 111 and liquid outlet pipe 112 is provided with a pressurizing member.

Through the setting of secondary pipeline structure, can be convenient for carry in the energy memory in each heat transfer assembly in the heat transfer liquid unify, reduce the pipeline structure among the energy memory, and through the setting of pressure boost spare, make the injection of liquid can be through the self pressure control of heat transfer mechanism, also can improve the pressure of injection through pressure boost spare control to improve spun angle and distance, and spun water smoke effect.

In some embodiments of the present application, optionally, as shown in fig. 8, fig. 8 is a schematic structural view of an embodiment of the fire fighting mechanism 300 of the present application. The fire fighting mechanism 300 further includes a fire fighting pipe 21, one end of the fire fighting pipe 21 is communicated with the channel, and the nozzle 22 is sleeved on the other end of the fire fighting pipe 21.

Wherein, the fire fighting pipe 21 is extended in a first direction with one end sleeved with the nozzle 22. Specifically, the fire hose 21 may employ a coiled hose.

Through the setting of fire hose 21, can make fire control mechanism 300 and group battery 200 laminate as far as possible, be convenient for spray heat transfer liquid.

In some embodiments of the present application, optionally, as shown in fig. 1 and fig. 9, fig. 1 is a schematic structural diagram of an embodiment of the present application, and fig. 9 is a schematic structural diagram of the embodiment shown in fig. 1 with the battery pack 200 removed. The heat exchanging mechanism 100 further includes a storage tank 13, and the storage tank 13 is disposed to sink in the first direction for storing the battery pack 200.

Through the setting of holding vessel 13, can make energy storage device such as battery package can steadily place in holding vessel 13.

In some embodiments of the present application, optionally, as shown in fig. 1 and 8, fig. 1 is a schematic structural diagram of an embodiment of the present application, and fig. 7 is a schematic structural diagram of an embodiment of a fire fighting mechanism 300 of the present application. One end of the fire fighting pipe 21 is connected to the storage tank 13, a top bend 23 is arranged at the end of the nozzle 22 on the fire fighting pipe 21, and the top bend 23 is bent to enable the spraying direction of the nozzle 22 to face the battery pack 200.

Wherein, the one end that fire control pipe 21 and heat exchange mechanism 100 are connected still sets up end bending 24, and end bending 24 department is buckled and is made fire control pipe 21 extend a distance in the plane parallel with the diapire of holding vessel 13 earlier, and then extend back to the back with holding vessel 13 mutually.

Set up on the inner wall of hold up tank 13 through the access position of fire control pipe 21, and extend mutually with hold up tank 13 mutually, can make fire control pipe 21 complete arrange energy memory inside in, reduce the outstanding thing of energy memory week side, energy memory's inside framework has been optimized, secondly, buckle 23's setting through the top, can adjust the extending direction of the fire control pipe 21 other end, make its skew and the first direction, it can fully fill the fire control region to spray the region when being convenient for shower nozzle 22 sprays, it is three, buckle 24's setting through the end, the tip location that can make fire control pipe 21 and heat transfer mechanism 100 communicate does not extend on the first direction, be convenient for heat transfer liquid in the passageway gets into in the fire control pipe 21.

In some embodiments of the present application, optionally, as shown in fig. 9, fig. 9 is a schematic structural view of the embodiment shown in fig. 1 with the battery pack 200 removed. The heat exchange mechanism 100 is further provided with a mounting frame 14 on the periphery, and the mounting frame 14 is used for fixing the heat exchange mechanism 100 and the mounting position.

Wherein, the mounting frame 14 is provided with a mounting hole 15 for bolting or screwing.

By the installation of the installation frame 14, the heat exchange mechanism 100 can be stably fixed to the installation position.

In some embodiments of the present application, optionally, as shown in fig. 9, fig. 9 is a schematic structural view of the embodiment shown in fig. 1 with the battery pack 200 removed. The liquid inlet 11 and the liquid outlet 12 are disposed at an interval on the outer sidewall of the heat exchanging mechanism 100, and the liquid inlet 11 and the liquid outlet 12 are disposed below the first direction of the mounting frame 14.

Through setting up inlet 11 and liquid outlet 12 in the below of the first direction of installing frame 14, be convenient for inlet 11 and liquid outlet 12 are connected with the external pipe, and can reduce the protrusion of energy memory week side to make inlet 11 and liquid outlet 12 can be under the protection of installing frame 14, improved energy memory's mechanical strength.

Compared with the prior art, among the energy memory of this application embodiment, through being linked together fire control mechanism 300 and heat transfer mechanism 100, make fire control mechanism 300 can directly utilize the heat transfer liquid of heat transfer mechanism 100 to carry out the fire control operation, not only ensured the fire fighting ability among the energy memory, still effectual fire control mechanism 300 and the heat transfer mechanism 100 who has integrated among the current energy memory reduce owing to set up among the energy memory that fire control mechanism 300 leads to alone that the pipeline is numerous and diverse, and the problem that available space descends in the energy memory.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application, and are intended to be covered by the claims and the specification of the present application. In particular, the features mentioned in the embodiments can be combined in any manner, as long as no structural conflict exists. This application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. An energy storage device, comprising:

2. The energy storage device of claim 1, further comprising a plenum through which said heat-exchange liquid passes before entering said passage, said plenum being configured to increase the pressure of said heat-exchange liquid.

3. The energy storage device of claim 1, wherein the fire protection mechanism comprises a spray head and a blocking portion, the spray head is provided with an opening, and the blocking portion covers the opening;

the occlusion is configured to actuate to open the opening when an ambient temperature reaches a threshold.

4. The energy storage device of claim 3, wherein the blocking portion is made of a temperature-sensitive material.

5. The energy storage device of claim 4, wherein the fire protection mechanism further comprises an electrical heating element connected to the blocking portion, the electrical heating element being configured to heat the blocking portion.

6. The energy storage device according to claim 5, further comprising a sensor and a control unit, wherein the sensor and the electric heating element are electrically connected to the control unit, the sensor detects the state of the battery pack to generate a thermal runaway alarm signal, and the control unit controls the electric heating element according to the thermal runaway alarm signal.

7. The energy storage device according to any one of claims 1 to 6, further comprising a case, wherein the heat exchange mechanism, the fire fighting mechanism and the battery pack are all accommodated in the case.

8. The energy storage device according to claim 2, wherein the heat exchange mechanism further comprises a liquid inlet and a liquid outlet which are communicated with the channel, and the energy storage device further comprises a liquid supply pipeline communicated with the liquid inlet and a liquid outlet pipeline communicated with the liquid outlet;

9. The energy storage device of claim 3, wherein said fire fighting mechanism further comprises a fire hose, one end of said fire hose communicating with said passageway, said nozzle terminating at the other end of said fire hose.

10. The energy storage device of claim 9, wherein said heat exchanging mechanism further comprises a storage tank, said storage tank being disposed in a first direction for storing said battery pack.

11. The energy storage device of claim 10, wherein one end of the fire hose is connected to the storage tank and the nozzle end of the fire hose is provided with a top bend, and the top bend bends to direct the nozzle toward the battery pack.

12. The energy storage device of claim 8, wherein a mounting frame is further arranged around the heat exchange mechanism, and the mounting frame is used for fixing the heat exchange mechanism and a mounting position.

13. The energy storage device as claimed in claim 12, wherein the liquid inlet and the liquid outlet are disposed at an interval on an outer sidewall of the heat exchange mechanism, and the liquid inlet and the liquid outlet are disposed below the mounting frame.