Multi-chamber energy storage battery cabinet with security function

Abstract

The utility model discloses a multi-cavity bin energy storage battery cabinet with a security function, and relates to the field of energy storage equipment.The energy storage battery cabinet comprises a frame with a plurality of independent lattices, module box bodies installed in the lattices of the frame and a controller installed at the top end of the frame, the lattices of the steel frame are matched at intervals, and the module box bodies are installed in the lattices of the frame. Flame-retardant heat insulation layers are arranged among the grids; a flow channel is arranged in the box wall of the module box body and is used for guiding a heat exchange working medium to realize effective heat exchange; at least one inner side face of the module box body is provided with a silica gel heat exchange bag communicated with the flow channel, the battery cabinet is provided with a plurality of independent cavities, the battery units are physically isolated, and under the condition of battery thermal failure, fault spreading can be effectively restrained, the battery units with risks can be isolated in time, and losses are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage devices, in particular to a multi-chamber energy storage battery cabinet with security function. BACKGROUND

[0002] Existing energy storage technologies, especially in commercial and residential energy storage stations, mainly use lithium batteries or iron phosphate batteries as core energy storage units. These batteries have high energy density and long service life, but also have the risk of thermal failure. Once overheating occurs, the battery may catch fire or explode, causing property loss and even casualties. Especially in high-temperature environments, the risk of battery thermal failure is more prominent, which poses a high demand for the safety of energy storage systems. Therefore, existing solutions usually include measures such as strengthening the battery heat dissipation system, installing temperature sensors, and configuring overvoltage and overcurrent protection to prevent overheating, but these measures may still not be enough to completely avoid thermal failure in extreme cases.

[0003] The shortcomings of the prior art are that although the risk can be reduced through heat dissipation and protection mechanisms, most systems lack comprehensive safety protection design and cannot effectively deal with the chain reaction after battery failure. For example, when one battery unit overheats and fails, other adjacent units may be affected, resulting in catastrophic consequences. Another problem is that existing technologies mostly focus on single safety protection measures and fail to consider the synergistic effect of multiple protection mechanisms from a system level, thus failing to achieve comprehensive safety protection. In addition, most existing cabinet designs lack timely response and effective isolation measures after battery failure, which may lead to catastrophic failure spreading to the entire energy storage system.

[0004] In order to solve this problem, it is particularly important to develop a multi-chamber energy storage battery cabinet with security function. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to at least overcome one of the shortcomings of the prior art, and to provide a multi-chamber energy storage battery cabinet with security function. The battery cabinet is designed with multiple independent chambers to physically isolate the battery units, so that in the case of battery thermal failure, the spread of failure can be effectively suppressed, and the risky battery units can be isolated in time to reduce losses.

[0006] To achieve the above object, the application discloses a multi-cavity room energy storage battery cabinet with security function, which comprises a frame with a plurality of independent compartments, a module box body installed in the compartments of the frame, and a controller installed at the top end of the frame, wherein the compartments of the steel frame are spaced apart and are provided with a flame-retardant heat insulation layer between the compartments; the box wall of the module box body is provided with a flow channel for guiding the heat exchange medium to achieve effective heat exchange; at least one inner side surface of the module box body is provided with a silica gel heat exchange bag in communication with the flow channel, which has excellent heat conduction performance and good flexibility and adaptability. At least one temperature sensor is installed in the module box body to monitor the temperature change in the module box body in real time to ensure the normal operation of the equipment. Under normal working conditions, the heat exchange medium in the flow channel is transported to the heat exchange bag to exchange heat with the battery pack through heat conduction, thereby maintaining the working temperature of the battery. However, in the extreme case of battery overheating or fire, the silica gel heat exchange bag will melt and break under high temperature, so that the heat exchange medium can quickly flow into the box body and directly contact the surface of the battery, thereby playing an effective cooling effect, rapidly reducing the temperature of the battery, and inhibiting the chain reaction of battery thermal runaway, thereby preventing further damage or danger of the battery.

[0007] The outer wall of the box body is provided with a flame-retardant heat insulation layer.

[0008] In some embodiments, the fluid in each module box body in the energy storage battery cabinet is connected to an external heat exchange medium circulating heat exchange device through high-temperature-resistant and heat-insulating pipelines in parallel.

[0009] In some embodiments, each module box body in the energy storage battery cabinet is installed in an independent compartment.

[0010] Compared with the prior art, the application has at least one of the following beneficial effects:

[0011] 1. Significantly improve the safety of the energy storage system: through the physical isolation design of the multi-cavity, combined with the application of the flame-retardant heat insulation layer, effectively prevent the spread of single battery unit failure to adjacent units, inhibit the occurrence of catastrophic chain reaction, and significantly reduce the overall failure risk of the energy storage system.

[0012] 2. Rapid response and inhibition of thermal runaway: the special design of the silica gel heat exchange bag can automatically release the heat exchange medium under high temperature, directly cool the overheated battery unit, thereby rapidly reducing the temperature and preventing the accident from further expanding.

[0013] 3. Enhance the temperature control performance of the energy storage system: the modular design cooperates with the efficient flow channel and heat exchange bag to realize stable heat exchange under normal working conditions, ensure that the battery unit works in a safe temperature range, and prolong the service life of the battery.

[0014] 4. Improve the adaptability and reliability of the energy storage system: through the parallel connection of high-temperature resistant insulated pipes and the independent installation of modules, not only is the system easy to maintain and replace, but it can also adapt to complex environmental conditions, further improving the reliability and application range of the energy storage system.

[0015] The above-listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Aspects of the present disclosure will become more fully understood from the detailed description and accompanying drawings, in which the structures of the respective structures shown in the drawings are sometimes shown with exaggerated positions, sizes, and ranges, etc. In the drawings:

[0017] Fig. 1 is a structural schematic diagram of an embodiment of the present application.

[0018] Fig. 2 is a structural schematic diagram of an embodiment of the present application from another perspective.

[0019] Fig. 3 is a structural schematic diagram of the internal structure of a module box in an embodiment of the present application. DETAILED DESCRIPTION

[0020] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It should be understood, however, that the present disclosure can be presented in many different forms and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and to fully inform those skilled in the art of the scope of protection of the present disclosure. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0021] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the sizes of some features can be distorted for the sake of clarity.

[0022] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized specification when appropriate.

[0023] As used in the specification, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The terms "comprises," "comprising," "includes," "including," and "contains," as used in the specification, mean that there are contained, but do not necessarily exclude, other features, integers, or steps. The term "and / or" includes any and all combinations of one or more of the associated listed items. Embodiments

[0024] With reference to the accompanying Figs. 1-3 The present embodiments disclose a multi-cavity energy storage battery cabinet with security functions, aiming to effectively control risks and ensure the stability and safety of the battery system when the battery overheats or fails through independent modular design and comprehensive safety measures. The energy storage battery cabinet includes a frame 1, a grid position 2, a module box 4, a flow channel 5, a heat exchange bag 6, a controller 3, and other key components. The cooperation between these parts ensures that the system can work efficiently under various working conditions.

[0025] The frame 1 is made of steel material, which has sufficient strength and durability. The frame 1 is provided with multiple grid positions 2 for accommodating and isolating multiple module boxes 4. Each grid position 2 is physically isolated from the adjacent grid position by a heat insulation material, ensuring that heat cannot quickly transfer to adjacent modules in the event of a failure. The spacing of the grid positions 2 cooperates with the overall structural design of the frame 1, and through precise installation, the module boxes 4 can be stably installed in their respective grid positions 2, thereby avoiding potential safety hazards caused by vibration or external impact. On the outer side of the frame 1, a fire-retardant insulation layer is provided, which effectively enhances the cabinet's tolerance to external heat sources and prevents external high-temperature environments from affecting the internal equipment.

[0026] The module box 4 is the core component of the energy storage battery cabinet, and each module box 4 is used to accommodate battery units and temperature control systems. Each module box 4 is provided with a flow channel 5, through which the heat exchange medium circulates within the module box 4 to exchange heat and maintain the temperature stability of the battery units. The flow channel 5 is designed with an optimized pipe layout to ensure that the flow rate and heat transfer efficiency of the cooling liquid are at their best. The heat exchange medium in the flow channel 5 is usually a liquid substance, such as water or glycol solution, which has a high specific heat capacity and can effectively remove the heat of the battery units at a low flow rate to maintain the operating temperature of the battery.

[0027] On the inner side of the module box 4, a silica gel heat exchange bag 6 is arranged in communication with the flow channel 5. The excellent heat conduction performance and flexibility of silica gel material enable it to effectively exchange heat with the heat exchange working medium in the flow channel under normal circumstances. In the extreme case of overheating or fire of the battery cell, the silica gel heat exchange bag 6 will automatically melt or break under the action of high temperature, releasing the heat exchange working medium. At this time, the working medium quickly flows into the inside of the module box 4 and directly contacts the surface of the battery cell, thereby playing a rapid cooling effect, rapidly reducing the temperature of the battery, inhibiting the spread of thermal runaway phenomenon, and preventing the battery from being damaged or dangerous more seriously. The reaction speed of the silica gel heat exchange bag 6 when it melts and breaks is very fast, which can effectively deal with the sudden high temperature condition.

[0028] At least one temperature sensor is also installed in the module box 4, which can monitor the temperature change in the inside of the module box 4 in real time, so as to ensure that the cooling and power-off protection measures can be started in time when the temperature is too high. The data of the temperature sensor is transmitted through the controller 3, which is located at the top end of the frame 1 and is responsible for the temperature control and security monitoring of the whole system. The controller 3 determines whether the cooling system or other protection measures need to be started according to the data of the temperature sensor, so as to ensure that the battery cell will not overheat and cause failure.

[0029] Under normal working conditions, the heat exchange working medium in the flow channel 5 is connected with the external cooling equipment through the circulating system to form a closed cooling circuit. The cooling circuit is connected with the external cooling equipment through a high-temperature-resistant and heat-insulating pipeline, which can exchange heat and take away the heat generated in the module box 4 when needed. If the environmental temperature is too high or the flow rate of the cooling liquid is not enough, the cooling system can automatically adjust the flow rate of the fluid to further improve the heat dissipation efficiency.

[0030] In some embodiments, each module box 4 of the energy storage battery cabinet is installed in the compartment 2 of the frame 1 through independent partition. Each module box 4 operates independently, and through physical isolation and independent temperature control system, the failure of one module can be avoided to affect other modules. The independent design can quickly isolate and cut off the electrical connection between the module and other modules when a module fails, ensuring the overall safety of the system.

[0031] The energy storage battery cabinet of the embodiment has a wide range of application scenarios. For example, in a commercial energy storage system, multiple energy storage battery cabinets can be installed side by side to accommodate a large number of battery cells. In this case, the independence of each module box 4 and the good heat management system can ensure that the system can still work stably under heavy load, avoiding the shutdown of the whole system due to the failure of a module. The home energy storage system can integrate multiple module boxes 4 into a small cabinet through compact design, provide the required power storage for the home, and ensure the safe operation of the battery under any working condition through precise temperature control and security functions.

[0032] Through the above design, the energy storage battery cabinet of the embodiment ensures the safety, stability and high efficiency of the energy storage system under different environments and working conditions through multiple safety protection measures, and can meet the high requirements of modern energy storage systems on safety and reliability.

[0033] Although exemplary embodiments of the disclosure have been described, it will be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the disclosure without departing from the spirit and scope of the disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the disclosure defined by the claims. The disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A multi-chamber energy storage battery cabinet with security functions, characterized in that: The energy storage battery cabinet comprises a frame with a plurality of independent compartments, a module box body installed in the compartments of the frame, and a controller installed at the top end of the frame, wherein the compartments of the frame are spaced apart and are provided with a fire-retardant heat insulation layer between the compartments; a flow channel is arranged in the wall of the module box body, and the flow channel is used for guiding the heat exchange medium to realize effective heat exchange; at least one inner side surface of the module box body is provided with a silica gel heat exchange bag communicated with the flow channel; at least one temperature sensor is installed in the module box body, and the temperature change in the module box body is monitored in real time to ensure the normal operation of the equipment.

2. The multi-cavity room energy storage battery cabinet with security function as claimed in claim 1, characterized in that: The outer wall surface of the box body is provided with a fire-retardant heat insulation layer.

3. The multi-cavity room energy storage battery cabinet with security function as claimed in claim 1, characterized in that: The fluid in each module box body in the energy storage battery cabinet is connected to an external heat exchange medium circulating heat exchange equipment through high-temperature-resistant and heat-insulating pipelines in parallel.

4. The multi-cavity room energy storage battery cabinet with security function as claimed in claim 1, characterized in that: Each module box body in the energy storage battery cabinet is installed in an independent compartment.

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