Auxiliary temperature control system of energy storage lithium battery

Abstract

The invention discloses an energy storage lithium battery auxiliary temperature control system which at least comprises a battery fixing bin, a temperature control system, a fire extinguishing system and a monitoring device, and a slot used for installing an energy storage lithium battery is formed in the battery fixing bin; the temperature control system comprises a circulating water pipeline laid on the wall of the battery fixing bin, and a condensation pipe and a refrigeration compressor are arranged at the upper end of the circulating water pipeline; a heating element is arranged at the lower end of the circulating water pipeline; the fire extinguishing system is arranged on the upper portion of the battery fixing bin and comprises a fire extinguishing material storage tank and a temperature sensing fusing device. And the monitoring device is used for monitoring the temperature and operation state parameters of the battery and the circulating water pipeline in real time. According to the invention, through integration of the precise temperature control system, the efficient fire extinguishing system and the monitoring device, comprehensive protection and management of the energy storage lithium battery are realized, and the operation efficiency and safety of the battery are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage lithium batteries, and in particular to a highly efficient and intelligent auxiliary temperature control system for energy storage lithium batteries. Background Art

[0002] With the rapid development of the new energy industry, energy storage lithium batteries, as important energy storage devices, have been widely used in power peak regulation, electric vehicles, renewable energy and other fields. However, the performance of lithium batteries is significantly affected by temperature. Too high or too low temperature will lead to a decrease in battery capacity, shortened life and even cause safety accidents. Therefore, how to effectively control the operating temperature of lithium batteries has become an urgent problem to be solved.

[0003] The energy storage lithium battery temperature control devices in the prior art often have problems such as inaccurate temperature control, great safety hazards, high operation and maintenance costs, and poor adaptability.

[0004] Specifically, traditional energy storage lithium battery temperature control devices often have the problem of inaccurate temperature control, which leads to large fluctuations in battery temperature and affects battery performance. Traditional energy storage lithium battery systems lack effective fire extinguishing measures. Once the battery catches fire, the fire can spread rapidly. Traditional energy storage lithium battery temperature control devices require frequent manual inspections and maintenance, and the operation and maintenance costs are high. Traditional energy storage lithium battery temperature control devices are often difficult to adapt to the needs of different scales and environmental conditions.

[0005] Therefore, it is urgent to develop a new type of efficient and intelligent energy storage lithium battery auxiliary temperature control system to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the present invention proposes an auxiliary temperature control system for energy storage lithium batteries, which realizes all-round protection and management of energy storage lithium batteries by integrating a precise temperature control system, an efficient fire extinguishing system and a monitoring device, thereby improving the operating efficiency and safety of the batteries.

[0007] As one aspect of the present invention, an auxiliary temperature control system for an energy storage lithium battery is provided, comprising a battery fixing compartment, a temperature control system, a fire extinguishing system and a monitoring device, wherein:

[0008] The battery fixing compartment is provided with a slot for installing the energy storage lithium battery, and the bottom of the slot is a supporting structure;

[0009] The temperature control system comprises a circulating water pipeline laid on the wall of the battery fixing compartment, the upper end of the circulating water pipeline is a medium-temperature water zone, on which a condenser and a refrigeration compressor connected to the condenser are arranged; the lower end of the circulating water pipeline is a low-temperature water zone, in which a heating element is arranged; the circulating water pipeline adjusts the temperature by absorbing heat from the battery side and circulating through the low-temperature water zone and the medium-temperature water zone, and the refrigeration compressor and the heating element are used to reduce and increase the temperature of the circulating water respectively;

[0010] The fire extinguishing system is arranged on the upper part of the battery fixing compartment, and includes a fire extinguishing material storage tank and a temperature-sensitive fuse device. When the temperature in the battery compartment reaches a preset threshold, the temperature-sensitive fuse device is activated to release the fire extinguishing material;

[0011] The monitoring device is used to monitor the temperature and operating status parameters of the battery and the circulating water pipeline in real time, and transmit the data to the cloud or a monitoring center for remote management and early warning.

[0012] Preferably, a circulating water pump, a first temperature sensor and a second temperature sensor are further provided in the circulating water pipeline; wherein the first temperature sensor is provided in the medium-temperature water zone at the upper part of the circulating water pipeline, and the second temperature sensor is provided in the low-temperature water zone at the lower part of the circulating water pipeline.

[0013] Preferably, the battery fixing compartment is made of fast heat-absorbing material and fire-retardant material, and the bottom of the slot is a supporting structure made of fire-retardant material;

[0014] Wherein, the fast heat absorption material is aluminum alloy or graphite composite material, and the fire retardant material is flame retardant ABS (acrylonitrile-butadiene-styrene copolymer) or flame retardant PC (polycarbonate).

[0015] Preferably, the circulating water pipeline is made of corrosion-resistant stainless steel material and is coated with an anti-corrosion coating on the inside.

[0016] Preferably, the fire extinguishing material storage tank is filled with perfluorohexanone high-efficiency fire extinguishing agent, and the temperature-sensitive fuse device is made of a low-melting-point alloy or a specially designed heat-sensitive material.

[0017] Preferably, it also includes:

[0018] The control system is used to compare the temperatures of the corresponding water zones detected by the first temperature sensor and the second temperature sensor with corresponding threshold values, and automatically adjust the working states of the refrigeration compressor, the heating element and the circulating water pump through an intelligent algorithm to adjust the circulating water temperature and flow rate.

[0019] Preferably, wherein:

[0020] When the second temperature sensor arranged in the low-temperature water zone of the circulating water pipeline detects that the current water temperature is lower than a predetermined threshold value, the control system controls the heating element to work and raise the water temperature of the low-temperature water zone by electric heating; wherein, an overheating protection device is arranged on the heating element to prevent dry burning or overheating damage;

[0021] When the first temperature sensor arranged in the medium-temperature water zone of the circulating water pipeline detects that the current water temperature is higher than another predetermined threshold, the control system controls the refrigeration compressor to operate and reduces the water temperature of the medium-temperature water zone through the condenser.

[0022] Preferably, the monitoring device also includes a smoke detector and is linked to a fire extinguishing system.

[0023] Preferably, the system adopts a modular design and is repeatedly constructed according to on-site usage to meet the needs of energy storage systems of different scales.

[0024] Preferably, an automatic cleaning device is further provided to regularly clean the circulating water pipeline.

[0025] Implementing the embodiments of the present invention has the following beneficial effects:

[0026] The present invention provides an efficient and intelligent auxiliary temperature control system for energy storage lithium batteries. By integrating technical means such as a precise temperature control system, an efficient fire extinguishing system and a monitoring device, the present invention realizes all-round protection and management of energy storage lithium batteries, improves the operating efficiency and safety of lithium batteries, and has significant technical progress and practical value.

[0027] In the embodiment of the present invention, through a precise temperature control system, the device can stabilize the temperature of the energy storage lithium battery within a relatively fixed range, ensuring that the battery operates within the optimal operating temperature range, thereby improving the capacity, life and stability of the battery.

[0028] At the same time, a fire extinguishing system is built into the system of the present invention, which can quickly release fire extinguishing materials when a battery catches fire, effectively curb the spread of fire, and ensure the safety of the equipment. At the same time, the battery compartment and pipelines made of fire-retardant materials further improve the overall safety performance.

[0029] In the system of the present invention, an intelligent temperature control system and a monitoring device are integrated to realize real-time monitoring and remote management of parameters such as battery temperature and operating status, thereby improving operation and maintenance efficiency and reducing labor costs.

[0030] The system provided by the present invention can be repeatedly built according to the on-site usage to meet the needs of energy storage systems of different scales. At the same time, by adjusting the temperature and flow of circulating water, it can adapt to the temperature control requirements under different seasons and environmental conditions.

[0031] The present invention adopts a high-efficiency, low-noise circulating water pump and a refrigeration compressor, which reduces energy consumption and noise pollution. At the same time, by recycling the circulating water, the waste of water resources is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For those skilled in the art, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0033] Figure 1 A functional architecture diagram of an embodiment of an energy storage lithium battery auxiliary temperature control system provided by the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the cross-sectional state of the coordination relationship between the battery fixing compartment, the temperature control system, and the fire extinguishing system;

[0035] Figure 3 for Figure 1 Schematic diagram of the functional modules of the medium temperature control system;

[0036] Figure 4 It is a top view schematic diagram of the positional relationship of the circulating water pipeline, the battery fixing compartment and the battery after being assembled according to the present invention;

[0037] Figure 5 It is a schematic diagram of the temperature control principle of the warm water zone and the low temperature water zone in the circulating water pipeline involved in the present invention;

[0038] Figure 6 The present invention is a schematic diagram of the matching relationship between the refrigeration compressor and the condenser tube. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 FIG. 1 is a functional architecture diagram of an embodiment of an energy storage lithium battery auxiliary temperature control system provided by the present invention; Figures 2 to 6 As shown, in this embodiment, an auxiliary temperature control system for energy storage lithium batteries is proposed, which effectively improves the problem that the temperature of the energy storage lithium batteries is difficult to stabilize in a relatively fixed range, and improves the operating state of the lithium batteries.

[0041] More specifically, in this embodiment, the lithium battery auxiliary temperature control system at least includes: a battery fixing compartment 1, a temperature control system 2, a fire extinguishing system 3 and a monitoring device 4, wherein:

[0042] The battery fixing compartment 1 is provided with a slot for installing the energy storage lithium battery 1, and the bottom of the slot is a supporting structure (i.e. Figure 6 The base is shown); wherein the battery fixing compartment 1 is composed of a fast heat-absorbing material and a fire-retardant material, and the supporting structure is made of a flame-retardant material; wherein, in some examples, the fast heat-absorbing material is an aluminum alloy or a graphite composite material, and the fire-retardant material is a flame-retardant ABS or a flame-retardant PC, ensuring that the battery compartment has good thermal conductivity and fire resistance.

[0043] The temperature control system 2 includes a circulating water pipe 20 laid on the wall of the battery fixing compartment 1, wherein the circulating water pipe 20 is made of corrosion-resistant stainless steel material and is coated with an anti-corrosion coating inside to improve the flow efficiency of the circulating water and prevent corrosion.

[0044] The upper end of the circulating water pipe 20 is a medium-temperature water zone, on which a condenser 23 and a refrigeration compressor 24 connected to the condenser 23 are arranged; the lower end of the circulating water pipe 20 is a low-temperature water zone, in which a heating element 26 is arranged; the circulating water pipe adjusts the temperature by absorbing heat from the battery side and circulating through the low-temperature water zone and the medium-temperature water zone, and the refrigeration compressor and the heating element are used to lower and raise the temperature of the circulating water respectively; the refrigeration compressor 24 is air-cooled or water-cooled, and the specific type is selected according to system requirements and energy efficiency ratio to ensure sufficient refrigeration capacity and energy efficiency ratio. In the implementation example, a high-efficiency, low-noise circulating water pump and refrigeration compressor can be used to reduce energy consumption and noise pollution.

[0045] Furthermore, a circulating water pump 21, a first temperature sensor 22 and a second temperature sensor 25 are further provided in the circulating water pipe 20; wherein the first temperature sensor 22 is provided in the medium-temperature water zone at the upper part of the circulating water pipe 20, and the second temperature sensor 25 is provided in the low-temperature water zone at the lower part of the circulating water pipe 20.

[0046] The fire extinguishing system 3 is arranged on the upper part of the battery fixing compartment 1, and includes a fire extinguishing material storage tank and a temperature-sensitive fuse device. When the temperature in the battery compartment reaches a preset threshold, the temperature-sensitive fuse device is activated to release the fire extinguishing material; specifically, the fire extinguishing material storage tank is filled with perfluorohexanone high-efficiency fire extinguishing agent, and the temperature-sensitive fuse device is made of a low-melting-point alloy or a specially designed thermosensitive material to ensure that the fire extinguishing agent can be triggered to release at the early stage of a fire.

[0047] The monitoring device 4 is used to monitor the temperature and operating status parameters of the battery and the circulating water pipeline in real time, and transmit the data to the cloud or a monitoring center for remote management and early warning.

[0048] Furthermore, in this embodiment, the system further includes:

[0049] The control system (not shown) is used to adjust the circulating water temperature and flow rate. Specifically, the temperatures of the corresponding water zones detected by the first temperature sensor 22 and the second temperature sensor 25 are compared with corresponding threshold values, and the working states of the refrigeration compressor 24, the heating element 26 and the circulating water pump 21 are automatically adjusted through an intelligent algorithm to achieve more precise temperature control.

[0050] Specifically, when the second temperature sensor 25 disposed in the low-temperature water zone of the circulating water pipe 20 detects that the current water temperature is lower than a predetermined threshold, the control system controls the heating element 26 to operate, and operates by electric heating to increase the water temperature in the low-temperature water zone. In other embodiments, an overheating protection device is provided on the heating element 26 to prevent dry burning or overheating damage.

[0051] Similarly, when the first temperature sensor 22 arranged in the medium-temperature water zone of the circulating water pipe 20 detects that the current water temperature is higher than another predetermined threshold, the control system controls the refrigeration compressor 24 to operate and lowers the water temperature of the medium-temperature water zone through the condenser.

[0052] In another embodiment, the system further comprises a smoke detector, which is linked with the fire extinguishing system to improve the speed and accuracy of fire response.

[0053] In another embodiment, the system adopts a modular design and can be repeatedly constructed according to on-site usage to meet the needs of energy storage systems of different scales.

[0054] In another embodiment, the system is further provided with an automatic cleaning device to regularly clean the circulating water pipeline to prevent the accumulation of scale and impurities from affecting the temperature control effect and battery life.

[0055] In the present invention, the circulating water is heated or cooled according to the set temperature through the temperature sensing element in the circulating water pipeline; the temperature of the energy storage lithium battery is controlled by the change of the circulating water temperature.

[0056] Implementing the embodiments of the present invention has the following beneficial effects:

[0057] The present invention provides an efficient and intelligent auxiliary temperature control system for energy storage lithium batteries. By integrating technical means such as a precise temperature control system, an efficient fire extinguishing system and a monitoring device, the present invention realizes all-round protection and management of energy storage lithium batteries, improves the operating efficiency and safety of lithium batteries, and has significant technical progress and practical value.

[0058] In the embodiment of the present invention, through a precise temperature control system, the device can stabilize the temperature of the energy storage lithium battery within a relatively fixed range, ensuring that the battery operates within the optimal operating temperature range, thereby improving the capacity, life and stability of the battery.

[0059] At the same time, a fire extinguishing system is built into the system of the present invention, which can quickly release fire extinguishing materials when a battery catches fire, effectively curb the spread of fire, and ensure the safety of the equipment. At the same time, the battery compartment and pipelines made of fire-retardant materials further improve the overall safety performance.

[0060] In the system of the present invention, an intelligent temperature control system and a monitoring device are integrated to realize real-time monitoring and remote management of parameters such as battery temperature and operating status, thereby improving operation and maintenance efficiency and reducing labor costs.

[0061] The system provided by the present invention can be repeatedly built according to the on-site usage to meet the needs of energy storage systems of different scales. At the same time, by adjusting the temperature and flow of circulating water, it can adapt to the temperature control requirements under different seasons and environmental conditions.

[0062] The present invention adopts a high-efficiency, low-noise circulating water pump and a refrigeration compressor, which reduces energy consumption and noise pollution. At the same time, by recycling the circulating water, the waste of water resources is reduced.

[0063] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0064] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A system that specifies the functions of a box or boxes.

[0065] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. An energy storage lithium battery auxiliary temperature control system, characterized in that: At least include battery fixing compartment, temperature control system, fire extinguishing system and monitoring device, including: The battery fixing compartment is provided with a slot for installing the energy storage lithium battery, and the bottom of the slot is a supporting structure; The temperature control system comprises a circulating water pipeline laid on the wall of the battery fixing compartment, the upper end of the circulating water pipeline is a medium-temperature water zone, a condenser is arranged on it, and the condenser is connected to a refrigeration compressor; the lower end of the circulating water pipeline is a low-temperature water zone, in which a heating element is arranged; the circulating water pipeline adjusts the temperature by absorbing heat from the battery side and circulating through the low-temperature water zone and the medium-temperature water zone, and the refrigeration compressor and the heating element are used to reduce and increase the temperature of the circulating water respectively; The fire extinguishing system is arranged on the upper part of the battery fixing compartment, and includes a fire extinguishing material storage tank and a temperature-sensitive fuse device. When the temperature in the battery compartment reaches a preset threshold, the temperature-sensitive fuse device is activated to release the fire extinguishing material; The monitoring device is used to monitor the temperature and operating status parameters of the battery and the circulating water pipeline in real time, and transmit the data to the cloud or a monitoring center for remote management and early warning.

2. The system according to claim 1, characterized in that A circulating water pump, a first temperature sensor and a second temperature sensor are further arranged in the circulating water pipeline; wherein the first temperature sensor is arranged in the medium-temperature water zone at the upper part of the circulating water pipeline, and the second temperature sensor is arranged in the low-temperature water zone at the lower part of the circulating water pipeline.

3. The system according to claim 2, characterized in that The battery fixing compartment is made of fast heat-absorbing material and fire-retardant material, and the supporting structure is made of fire-retardant material; Wherein, the fast heat absorption material is aluminum alloy or graphite composite material, and the fire retardant material is flame retardant ABS or flame retardant PC.

4. The system according to claim 3, characterized in that The circulating water pipeline is made of corrosion-resistant stainless steel material and is coated with an anti-corrosion coating inside.

5. The system according to claim 4, characterized in that The fire extinguishing material storage tank is filled with perfluorohexanone high-efficiency fire extinguishing agent, and the temperature-sensitive fuse device is made of a low-melting-point alloy or a specially designed heat-sensitive material.

6. The system according to claim 5, characterized in that Also included are: The control system is used to compare the temperatures of the corresponding water zones detected by the first temperature sensor and the second temperature sensor with corresponding threshold values, and automatically adjust the working states of the refrigeration compressor, the heating element and the circulating water pump through an intelligent algorithm to adjust the circulating water temperature and flow rate.

7. The system according to claim 6, characterized in that in: When the second temperature sensor arranged in the low-temperature water zone of the circulating water pipeline detects that the current water temperature is lower than a predetermined threshold value, the control system controls the heating element to work and raise the water temperature of the low-temperature water zone by electric heating; wherein, an overheating protection device is arranged on the heating element to prevent dry burning or overheating damage; When the first temperature sensor arranged in the medium-temperature water zone of the circulating water pipeline detects that the current water temperature is higher than another predetermined threshold, the control system controls the refrigeration compressor to operate and reduces the water temperature of the medium-temperature water zone through the condenser.

8. The system according to any one of claims 1 to 7, characterized in that: The monitoring device also includes a smoke detector and is linked to the fire extinguishing system.

9. The system according to claim 8, characterized in that The system adopts a modular design and is repeatedly constructed according to on-site usage to meet the needs of energy storage systems of different sizes.

10. The system according to claim 9, characterized in that An automatic cleaning device is further provided to clean the circulating water pipeline regularly.

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