Battery device and method of use

Abstract

The invention discloses battery equipment and a use method, the battery equipment comprises a container, a battery module, a liquid inlet pipeline, a liquid return pipeline, a first valve and a pump body, the container is used for storing immersion liquid; the battery module is communicated with the container; the liquid inlet pipeline and the liquid return pipeline are connected between the container and the battery module, the liquid inlet pipeline is used for conveying the immersion liquid in the container to the container, and the liquid return pipeline is used for discharging the immersion liquid in the battery module back to the container; the first valve and the pump body are both arranged on the liquid inlet pipeline, when the battery module is abnormal, the first valve is opened, and the pump body drives the immersion liquid to circularly flow between the container and the battery module through the liquid inlet pipeline and the liquid return pipeline. The battery equipment provided by the invention can realize cooling and heat management of the single battery module, realizes immersed fire protection, avoids the possibility of battery fire from the source, and further improves the use safety.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a battery device and a use method. Background Art

[0002] As a high-energy-density energy storage method, lithium batteries are widely used in various electronic devices. In the prior art, due to mechanical damage, overcharging, internal short circuit and other factors, the active materials inside the lithium battery are prone to violent exothermic reactions and thermal runaway. Since the exothermic reaction of lithium batteries does not require external oxygen to occur, the thermal runaway of lithium batteries will continue and is difficult to extinguish.

[0003] In order to enhance the safety of lithium battery use, lithium batteries in related technologies usually adopt physical isolation, temperature monitoring and other control methods. However, these control methods have unsatisfactory fire extinguishing effects, require manual intervention, cannot completely eliminate the possibility of fire, produce a large amount of harmful substances, and easily cause environmental pollution. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a battery device that can realize cooling and thermal management of a single battery module, realize immersion fire protection, and avoid the possibility of battery fire from the source, thereby improving safety of use.

[0006] The embodiment of the present invention further provides a method for using the battery device.

[0007] The battery device of the embodiment of the present invention comprises:

[0008] a container for storing an immersion liquid;

[0009] A battery module, the battery module being in communication with the container;

[0010] a liquid inlet pipeline and a liquid return pipeline, wherein both the liquid inlet pipeline and the liquid return pipeline are connected between the container and the battery module, and the liquid inlet pipeline is used to transport the immersion liquid in the container to the container, and the liquid return pipeline is used to discharge the immersion liquid in the battery module back to the container;

[0011] A first valve and a pump body, wherein the first valve and the pump body are both arranged on the liquid inlet pipeline, and when the battery module is abnormal, the first valve is opened, and the pump body drives the immersion liquid to circulate between the container and the battery module via the liquid inlet pipeline and the liquid return pipeline.

[0012] In some embodiments, a second valve is included, and the second valve is disposed in the liquid return pipeline. When the battery module is abnormal, the second valve opens to connect the battery module and the container.

[0013] In some embodiments, the first valve, the second valve and the battery module are each provided in plurality, the liquid inlet pipeline includes a plurality of liquid inlet branches, and the liquid return pipeline includes a plurality of liquid return branches;

[0014] The plurality of first valves are respectively arranged on the plurality of liquid inlet branches, the plurality of second valves are respectively arranged on the plurality of liquid return branches, and the plurality of battery modules are respectively connected between the plurality of liquid inlet branches and the plurality of liquid return branches.

[0015] In some embodiments, a first throttle valve is included, and the first throttle valve is arranged in the liquid inlet pipeline and located between the pump body and the battery module;

[0016] and / or, comprising a second throttle valve, wherein the second throttle valve is arranged in the liquid return pipeline;

[0017] And / or, both the first valve and the second valve are one-way valves.

[0018] In some embodiments, a filter is included, the filter is disposed in the liquid return line, and the filter is used to filter the immersion liquid returning to the container.

[0019] In some embodiments, the filter includes a filtration area and a clean liquid area, the filtration area is used to filter gas and particulate matter, and the filtration area is connected to the waste gas treatment device, the clean liquid area is used to cache the filtered immersion liquid, and the clean liquid area is connected to the container.

[0020] In some embodiments, the housing includes a shell, wherein the container, the pump body, and the filter are integrated in the shell.

[0021] In some embodiments, a temperature control system is included, and the temperature control system includes:

[0022] Temperature control unit;

[0023] A temperature control inlet and a temperature control loop, wherein the temperature control inlet and the temperature control loop are both connected to the temperature control unit, and the temperature control inlet and the temperature control loop are used to circulate the temperature control medium to the battery module to achieve temperature control of the battery module.

[0024] In some embodiments, the temperature control system includes a temperature control tube, which is connected between the temperature control inlet and the temperature control circuit and is disposed in the container, and is used to achieve heat exchange between the temperature control medium and the immersion liquid in the container;

[0025] And / or, the temperature control system includes a shell, the battery module is arranged in the shell, the temperature control path and the temperature control circuit are both connected to the shell, and the temperature control medium is used to pass into the shell and exchange heat with the battery module.

[0026] The method of using the embodiment of the present invention includes:

[0027] detecting operating parameters of the battery module;

[0028] If the operating parameter is abnormal, opening the first valve and the pump body to circulate the immersion liquid into the battery module;

[0029] After the immersion liquid is introduced for a set time, if the abnormality of the battery module is resolved, the first valve and the pump body are closed; if the operating parameter is not resolved, the immersion liquid is continuously introduced into the battery module.

[0030] Beneficial effects: The battery device and use method of the embodiments of the present invention can realize cooling and thermal management of a single battery module, realize immersion fire protection, and avoid the possibility of battery fire from the source, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a battery device according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] 1-container; 2-battery module; 3-liquid inlet pipeline; 4-liquid return pipeline; 5-first valve; 6-pump body; 7-second valve; 8-liquid inlet branch; 9-liquid return branch; 10-first throttle valve; 11-second throttle valve; 12-filter; 13-filtration area; 14-clean liquid area; 15-waste gas treatment device; 16-shell; 17-temperature control system; 18-temperature control unit; 19-temperature control inlet; 20-temperature control circuit; 21-temperature control pipe; 22-shell. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] like Figure 1 As shown, the battery device according to the embodiment of the present invention includes a container 1 , a battery module 2 , a liquid inlet pipeline 3 , a liquid return pipeline 4 , a first valve 5 and a pump body 6 .

[0036] The container 1 is used to store the immersion liquid. Figure 1As shown, the material of the container 1 can be plastic, metal, alloy, etc., and the style of the container 1 can be a box-type structure, a can-shaped structure, a bottled structure, etc. The immersion liquid can be a liquid with a fire-fighting function, specifically a liquid such as perfluoroacetone. Under normal circumstances, some immersion liquid can always be stored in the container 1. It should be noted that since the immersion liquid can also be used for thermal management of the temperature of the battery module 2, at this time, the immersion liquid should have good thermal conductivity. At the same time, since the immersion liquid needs to be passed into the battery module 2, the immersion liquid also needs to have good insulation properties. At this time, the immersion liquid can also be a liquid such as ethanol.

[0037] The battery module 2 is connected to the container 1. For example, Figure 1 As shown, the battery module 2 may be a single battery, and the battery module 2 may include a battery shell, the inner cavity of the battery shell may be connected to the container 1 through a corresponding pipeline, thereby meeting the need for passing the immersion liquid in the container 1 into the battery shell.

[0038] The liquid inlet pipeline 3 and the liquid return pipeline 4 are both connected between the container 1 and the battery module 2 , and the liquid inlet pipeline 3 is used to transport the immersion liquid in the container 1 to the container 1 , and the liquid return pipeline 4 is used to discharge the immersion liquid in the battery module 2 back to the container 1 .

[0039] For example, Figure 1 As shown, one end of the liquid inlet pipeline 3 can be connected to the container 1. Specifically, the liquid inlet pipeline 3 can extend into the container 1 from the top of the container 1, and the other end of the liquid inlet pipeline 3 can be connected to the battery shell of the battery module 2. One end of the liquid return pipeline 4 can be connected to the battery shell of the battery module 2, and the other end of the liquid return pipeline 4 can be connected to the container 1.

[0040] The first valve 5 and the pump body 6 are both arranged on the liquid inlet pipeline 3. For example, the pump body 6 can be a variable frequency water pump. The pump body 6 and the first valve 5 can both be connected in series to the liquid inlet pipeline 3, wherein the first valve 5 can be located downstream of the pump body 6.

[0041] When the battery module 2 is abnormal, the first valve 5 is opened, and the pump body 6 drives the immersion liquid to circulate between the container 1 and the battery module 2 through the liquid inlet line 3 and the liquid return line 4. For example, the abnormality of the battery module 2 may be an increase in the temperature of the battery module 2, thermal runaway of the battery module 2, etc. When it is detected that the battery module 2 is abnormal during operation, the control device or the like can control the first pump to start, or operate the pump body 6 to start. At this time, the immersion liquid in the container 1 can be transported to the battery shell of the battery module 2 by the pump body 6, so that the battery shell can be filled with the immersion liquid, and then the immersion liquid can be discharged from the liquid return line 4 to the container 1 under the action of the negative pressure generated by the pump body 6, thereby realizing the circulation of the immersion liquid to the battery module 2.

[0042] It should be noted that after the immersion liquid flows into the battery module 2, the immersion liquid can exchange heat with the battery module 2, thereby cooling the battery module 2 and avoiding the situation where the temperature of the battery module 2 is too high during operation. Secondly, when the battery module 2 is thermally runaway, the timely immersion of the immersion liquid can also play a role in fire extinguishing, ensuring the safety of use.

[0043] The battery device of the embodiment of the present invention can realize cooling and thermal management of a single battery module 2, realize immersion fire protection, and avoid the possibility of battery fire from the source, thereby improving the safety of use.

[0044] In some embodiments, the battery device includes a second valve 7 , which is disposed in the liquid return pipeline 4 , and when the battery module 2 is abnormal, the second valve 7 is opened to connect the battery module 2 and the container 1 .

[0045] For example, Figure 1 As shown, the second valve 7 can be connected in series to the liquid return line 4, and the second valve 7 can be arranged adjacent to the outlet of the battery shell of the battery module 2. When the first valve 5 and the pump body 6 are opened, the second valve 7 is also opened at the same time, thereby meeting the need for circulating the immersion liquid to the battery module 2. The setting of the second valve 7 realizes the on-off control between the battery module 2 and the container 1, further improving the safety and controllability of use.

[0046] In some embodiments, the first valve 5, the second valve 7 and the battery module 2 are each provided with multiple, the liquid inlet pipeline 3 includes multiple liquid inlet branches 8, the liquid return pipeline 4 includes multiple liquid return branches 9, the multiple first valves 5 are respectively provided in the multiple liquid inlet branches 8, the multiple second valves 7 are respectively provided in the multiple liquid return branches 9, and the multiple battery modules 2 are respectively connected between the multiple liquid inlet branches 8 and the multiple liquid return branches 9.

[0047] For example, Figure 1 As shown, the first valve 5, the second valve 7 and the battery module 2 can be provided with four each, the liquid inlet pipeline 3 can include a liquid inlet main section and four liquid inlet branches 8, the liquid inlet main section can be connected to the container 1, one end of the four liquid inlet branches 8 can be connected to the liquid inlet main section, and the other ends of the four liquid inlet branches 8 can be respectively connected to the battery shells of the above-mentioned four battery modules 2, and the above-mentioned four first valves 5 can be installed on the four liquid inlet branches 8 one by one.

[0048] The liquid return pipeline 4 may include a liquid return main section and four liquid return branches 9. The liquid return main section may be directly connected to the container 1, one end of the four liquid return branches 9 may all be connected to the liquid return main section, and the other ends of the four liquid return branches 9 may be respectively connected to the four battery modules 2, and the above-mentioned four second valves 7 may be installed on the four liquid return branches 9 one by one.

[0049] In this way, a relatively independent arrangement of multiple battery modules 2 is achieved. When an individual battery module operates abnormally, only the first valve 5 and the second valve 7 corresponding to the abnormal battery module 2 can be opened, thereby achieving point-to-point delivery of immersion liquid to the abnormal battery module 2, which is beneficial to enhancing the control effect and improving the efficiency of thermal management.

[0050] In some embodiments, the battery device includes a first throttle valve 10, which is disposed in the liquid inlet pipeline 3 and between the pump body 6 and the battery module 2. Figure 1 As shown, the first throttle valve 10 and the pump body 6 can both be installed on the above-mentioned liquid inlet main pipe section, wherein the first throttle valve 10 can be located downstream of the pump body 6. The first throttle valve 10 can control the pressure and flow rate of the immersion liquid delivered to the battery module 2, which is conducive to achieving precise control.

[0051] In some embodiments, the battery device includes a second throttle valve 11, and the second throttle valve 11 is arranged in the liquid return line 4. Figure 1 As shown, the second throttle valve 11 can be arranged on the above-mentioned liquid return main section. The second throttle valve 11 can control the pressure and flow of the immersion liquid output from the battery module 2, which is conducive to further improving the precision and accuracy of the regulation.

[0052] In some embodiments, the first valve 5 and the second valve 7 are both one-way valves. Figure 1 As shown, the first valve 5 allows the immersion liquid in the container 1 to flow unidirectionally to the battery module 2, and the second valve 7 allows the immersion liquid in the battery module 2 to flow unidirectionally to the container 1. This avoids the immersion liquid from flowing back and ensures the stability of operation.

[0053] On the other hand, it is also possible to eliminate the need to equip the first valve 5 and the second valve 7 with additional control devices, that is, when the pump body 6 is started, the immersion liquid in the container 1 can be delivered to each battery module 2 and realize fire protection and thermal management of abnormally operating battery modules 2. This can simplify the overall structural complexity and improve the reliability of operation.

[0054] In some embodiments, the battery device includes a filter 12 , which is disposed in the liquid return line 4 , and is used to filter the immersion liquid that flows back to the container 1 .

[0055] For example, Figure 1 As shown, the filter 12 can be installed on the above-mentioned liquid return main section. The filter 12 can filter the gas, particulate matter, etc. in the immersion liquid, thereby ensuring the purity of the immersion liquid flowing to the container 1, avoiding the situation where impurities such as gas easily cause pipeline blockage, etc., and ensuring the transportation efficiency of the immersion liquid.

[0056] In some embodiments, the filter 12 includes a filter area 13 and a clean liquid area 14, the filter area 13 is used to filter gas and particulate matter, and the filter area 13 is connected to the waste gas treatment device 15, the clean liquid area 14 is used to cache the filtered immersion liquid, and the clean liquid area 14 is connected to the container 1.

[0057] For example, Figure 1 As shown, the filter area 13 can be arranged above the clean liquid area 14. The filter area 13 can filter gases and particulate matter. The gas generated by the filtration can be transported to the waste gas treatment device 15, and then can be centrally treated by combustion or other methods, thereby realizing the fully enclosed operation of the entire battery equipment, and also realizing green energy saving and environmental protection with zero pollution emissions and operation.

[0058] The clean liquid area 14 can be a storage space. The filtered immersion liquid can be temporarily stored in the clean liquid area 14 and then transported to the container 1 via the pipeline between the clean liquid area 14 and the container 1, so that the immersion liquid can be recycled and reused, achieving cost reduction and efficiency improvement.

[0059] In some embodiments, the battery device includes a housing 16, and the container 1, the pump body 6, and the filter 12 are integrated in the housing 16. For example, Figure 1 As shown, the housing 16 can be generally a box-type structure, specifically a rectangular parallelepiped. The container 1, pump body 6, filter 12 and first throttle valve 10 can all be assembled in the housing 16, thereby realizing the integration of components and facilitating installation and layout.

[0060] In some embodiments, Figure 1 As shown, the battery device includes a temperature control system 17, which includes a temperature control unit 18, a temperature control route 19 and a temperature control loop 20. The temperature control route 19 and the temperature control loop 20 are both connected to the temperature control unit 18, and the temperature control route 19 and the temperature control loop 20 are used to circulate the temperature control medium to the battery module 2 to achieve temperature control of the battery module 2.

[0061] For example, the temperature control unit 18 may include a temperature control pump, a storage box, etc. The storage box can store temperature control media such as water. One end of the temperature control inlet 19 and the temperature control loop 20 can be connected to the storage box, and the other end of the temperature control inlet 19 and the temperature control loop 20 can be connected to components such as a temperature control plate. The temperature control plate can be in contact with the above-mentioned battery module 2, etc. The temperature control pump can be arranged on one of the temperature control inlet 19 and the temperature control loop 20.

[0062] When the temperature control pump is running, the temperature control medium can be transported to the temperature control plate through the temperature control inlet 19, and then the temperature control plate can achieve heat exchange with the battery module 2, so as to adjust the temperature of the battery module 2, and then the temperature control medium in the temperature control plate can be discharged back to the storage box through the temperature control circuit 20.

[0063] It should be noted that, when in use, the temperature of the battery module 2 can be regulated by means of both the delivery of the immersion liquid and the operation of the temperature control system 17 , thereby improving the efficiency and effect of thermal management control.

[0064] In some embodiments, the temperature control system 17 includes a temperature control tube 21 , which is connected between the temperature control inlet 19 and the temperature control circuit 20 and is disposed in the container 1 , and is used to achieve heat exchange between the temperature control medium and the immersion liquid in the container 1 .

[0065] For example, Figure 1 As shown, the temperature regulating tube 21 may be a liquid cooling tube or other components, and the temperature regulating tube 21 may be inserted into the container 1. Both ends of the temperature regulating tube 21 may be connected to the temperature regulating inlet 19 and the temperature regulating circuit 20, respectively. When the temperature regulating unit 18 is in operation, the temperature regulating medium may also be delivered to the temperature regulating tube 21, so that the temperature of the immersion liquid in the container 1 may be regulated by the temperature regulating tube 21, so that the temperature of the immersion liquid in the container 1 may be controlled within a reasonable range, which is conducive to ensuring the temperature regulation and fire fighting effect during use.

[0066] In some embodiments, the temperature control system 17 includes a shell 22, the battery module 2 is disposed in the shell 22, the temperature control inlet 19 and the temperature control circuit 20 are both connected to the shell 22, and the temperature control medium is used to pass into the shell 22 and exchange heat with the battery module 2.

[0067] For example, Figure 1 As shown, the outer shell 22 can be a square shell, and the above-mentioned multiple first valves 5, multiple battery modules 2 and multiple second valves 7 can all be assembled in the outer shell 22. The above-mentioned temperature control medium can be directly passed into the outer shell 22, so that heat exchange with the multiple battery modules 2 can be achieved in the outer shell 22, thereby realizing the temperature regulation of the battery modules 2.

[0068] The following describes the method of using the embodiment of the present invention.

[0069] The method of using the embodiment of the present invention includes:

[0070] Detecting the operating parameters of the battery module 2. For example, the operating parameter may be temperature, etc., and the temperature of each battery module 2 may be monitored in real time by a built-in temperature sensor, etc.

[0071] If the operating parameters are abnormal, the first valve 5 and the pump body 6 are opened to circulate the immersion liquid into the battery module 2. Specifically, if the detected temperature is abnormal, the first valve 5, the second valve 7 and the pump body 6 can be opened by operating the corresponding control device, so that the immersion liquid in the container 1 can be driven to be transported to the corresponding battery module 2, so that the temperature of the battery module 2 can be adjusted.

[0072] After the immersion liquid is introduced for a set time, if the abnormality of the battery module is resolved, the first valve 5 and the pump body 6 are closed. If the operating parameters are not resolved, the immersion liquid continues to be introduced into the battery module 2.

[0073] Specifically, if only the temperature of an individual battery module 2 is abnormal, after the immersion liquid is introduced, the temperature of the battery module 2 is controlled and restored to the allowable temperature range. At this time, it means that the abnormality of the battery module 2 has been controlled, and the pump body 6 and the corresponding first valve 5 and second valve 7 can be closed, so that the battery module 2 can continue to operate.

[0074] If an individual battery module 2 has thermal runaway and burned, then even after the immersion liquid is passed into the battery module 2, the battery module 2 will not be able to continue to operate. Therefore, it is necessary to maintain the continuous passage of the immersion liquid in the battery module 2, thereby avoiding the thermal runaway of the battery module 2 from spreading to other battery modules 2 and ensuring the stable operation of other battery modules 2.

[0075] A specific example of the battery device according to the embodiment of the present invention is described below.

[0076] The battery equipment mainly includes the following contents and corresponding components:

[0077] 1. Circulating "immersion" liquid: Use a special "immersion" liquid (i.e. immersion liquid), which has good thermal conductivity and can effectively absorb heat in the lithium battery module, thereby achieving efficient thermal management. Step 1: Start the "immersion" device (i.e. the whole composed of container 1, pump body 6, first throttle valve 10, and filter 12), the motor of pump body 6 starts working, and the "immersion" liquid is injected into the lithium battery module through the one-way puncture valve (first valve 5). Step 2: The "immersion" liquid circulates in the lithium battery module (battery module 2), continuously absorbing heat until the temperature of the lithium battery module drops to a safe range. Step 3: When the temperature of the lithium battery module drops to a safe range, the motor stops working, the one-way puncture valve is closed, and the "immersion" liquid stops being injected. Step 4: The liquid cooling unit (temperature regulating unit 18) starts working to cool down the "immersion" liquid so that it re-enters the circulation state.

[0078] 2. Automatic start of the "silencing" system: When an abnormality occurs in the lithium battery module (thermal runaway), the system automatically detects the abnormality, automatically starts the motor, opens the one-way puncture valve, and injects the "silencing" liquid into the abnormal battery module to achieve automatic fire extinguishing. Step 1: An abnormality occurs in the lithium battery module, and the system automatically detects the abnormality. Step 2: The system automatically starts the motor, opens the one-way puncture valve, and injects the "silencing" liquid into the abnormal battery module 2. Step 3: The "silencing" liquid circulates in the abnormal battery module 2, continuously absorbing heat until the temperature of the abnormal battery module 2 drops to a safe range.

[0079] 3. Fully enclosed "immersion" system design: The system is designed to be fully enclosed, with no pollution emissions, achieving green energy conservation and environmental protection. Step 1: The "immersion" liquid circulates in the lithium battery module to absorb heat. Step 2: The "immersion" liquid that has absorbed heat passes through the filter 12 to remove impurities and gases. Step 3: The filtered "immersion" liquid enters the waste gas treatment device 15 and is ignited or centrally treated. Step 4: The filtered "immersion" liquid is cooled by a liquid cooling unit.

[0080] 4. Collaborative work between the liquid cooling unit and the "immersion" device: The liquid cooling unit and the "immersion" device work together to intelligently adjust the temperature to ensure stable operation of the equipment. Step 1: The liquid cooling unit starts working to cool down the "immersion" liquid. Step 2: The liquid cooling unit and the "immersion" device work together to intelligently adjust the temperature of each battery module 2 to ensure stable operation of the equipment.

[0081] 5. Equipped with high-efficiency filter 12: High-efficiency filter 12 is used to remove impurities and gases in the "immersion" liquid to ensure the purity of the "immersion" liquid and extend the life of the equipment. Step 1: The "immersion" liquid circulates in the lithium battery module and absorbs heat. Step 2: The "immersion" liquid that has absorbed heat passes through the filter 12 to remove impurities and gases. Step 3: The filtered "immersion" liquid enters the liquid cooling unit for cooling.

[0082] Beneficial effects of this technical solution:

[0083] 1. Efficient thermal management: The present invention uses circulating "immersion" liquid to continuously absorb heat, save space, and maintain the cooling efficiency of continuous heat transfer of the equipment. Compared with existing physical isolation and temperature monitoring technologies, the present invention can more effectively deal with the thermal runaway problem of lithium batteries and solve the possibility of lithium battery fire from the source.

[0084] 2. Pure liquid circulation: The present invention is equipped with a high-efficiency filter, which can remove impurities and gases, ensure the purity of the "immersion" liquid, and extend the life of the equipment. Compared with the existing fire extinguishing system, the present invention does not produce a large amount of harmful substances during use, is environmentally friendly, and realizes an environmentally friendly closed-loop system.

[0085] 3. Intelligent linkage cooling: The liquid cooling unit of the present invention works in conjunction with the "immersion" device to intelligently adjust the temperature and ensure stable operation of the equipment. Compared with the existing fire extinguishing system, the intelligent linkage cooling system of the present invention can adjust the temperature more quickly and accurately, avoiding the trouble of manual intervention and improving the stability and reliability of the equipment.

[0086] 4. Fully enclosed system design: The "immersion" system design of the present invention is fully enclosed, has no pollution emissions, and achieves green energy saving. Compared with the existing technology, the fully enclosed system design of the present invention can avoid the generation and emission of harmful substances in the process of dealing with lithium battery fires, is more environmentally friendly, and realizes an environmentally friendly closed-loop system.

[0087] 5. High-efficiency fire extinguishing effect: The "immersion" system design of the present invention can be quickly activated when an abnormality occurs in the lithium battery, and the "immersion" liquid is injected into the abnormal battery module through a one-way puncture valve to achieve a high-efficiency fire extinguishing effect. Compared with the existing fire extinguishing system, the "immersion" system design of the present invention can quickly extinguish lithium battery fires in a short time, reducing the damage to equipment and personnel caused by fire.

[0088] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0089] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0091] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0092] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A battery device, characterized in that: include: a container for storing an immersion liquid; A battery module, the battery module being in communication with the container; a liquid inlet pipeline and a liquid return pipeline, wherein both the liquid inlet pipeline and the liquid return pipeline are connected between the container and the battery module, and the liquid inlet pipeline is used to transport the immersion liquid in the container to the container, and the liquid return pipeline is used to discharge the immersion liquid in the battery module back to the container; A first valve and a pump body, wherein the first valve and the pump body are both arranged on the liquid inlet pipeline, and when the battery module is abnormal, the first valve is opened, and the pump body drives the immersion liquid to circulate between the container and the battery module via the liquid inlet pipeline and the liquid return pipeline.

2. The battery device according to claim 1, characterized in that: A second valve is included, which is arranged on the liquid return pipeline. When the battery module is abnormal, the second valve opens to connect the battery module and the container.

3. The battery device according to claim 2, characterized in that: The first valve, the second valve and the battery module are each provided with a plurality of them, the liquid inlet pipeline includes a plurality of liquid inlet branches, and the liquid return pipeline includes a plurality of liquid return branches; The plurality of first valves are respectively arranged on the plurality of liquid inlet branches, the plurality of second valves are respectively arranged on the plurality of liquid return branches, and the plurality of battery modules are respectively connected between the plurality of liquid inlet branches and the plurality of liquid return branches.

4. The battery device according to claim 2, characterized in that: comprising a first throttle valve, the first throttle valve being arranged in the liquid inlet pipeline and between the pump body and the battery module; and / or, comprising a second throttle valve, wherein the second throttle valve is arranged in the liquid return pipeline; And / or, both the first valve and the second valve are one-way valves.

5. The battery device according to claim 1, characterized in that: A filter is included, wherein the filter is arranged in the liquid return pipeline and is used for filtering the immersion liquid returning to the container.

6. The battery device according to claim 5, characterized in that: The filter comprises a filter area and a clean liquid area, the filter area is used to filter gas and particulate matter, and the filter area is connected to the polluted gas treatment device, and the clean liquid area is used to buffer the filtered immersion liquid, and the clean liquid area is connected to the container.

7. The battery device according to claim 5, characterized in that: It comprises a shell, wherein the container, the pump body and the filter are integrated in the shell.

8. The battery device according to any one of claims 1 to 7, characterized in that: A temperature control system is included, wherein the temperature control system includes: Temperature control unit; A temperature control inlet and a temperature control loop, wherein the temperature control inlet and the temperature control loop are both connected to the temperature control unit, and the temperature control inlet and the temperature control loop are used to circulate the temperature control medium to the battery module to achieve temperature control of the battery module.

9. The battery device according to claim 8, characterized in that: The temperature control system comprises a temperature control pipe, which is connected between the temperature control inlet and the temperature control circuit and is arranged in the container, and is used to realize heat exchange between the temperature control medium and the immersion liquid in the container; And / or, the temperature control system includes a shell, the battery module is arranged in the shell, the temperature control path and the temperature control circuit are both connected to the shell, and the temperature control medium is used to pass into the shell and exchange heat with the battery module.

10. A method for using a battery device according to any one of 1 to 9 above, characterized in that: include: detecting operating parameters of the battery module; If the operating parameter is abnormal, opening the first valve and the pump body to circulate the immersion liquid into the battery module; After the immersion liquid is introduced for a set time, if the abnormality of the battery module is resolved, the first valve and the pump body are closed; if the operating parameter is not resolved, the immersion liquid is continuously introduced into the battery module.

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