Battery apparatus and method of use

Abstract

The application discloses a battery device and a use method, which comprise 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 both 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 returning the immersion liquid in the battery module to the container; the first valve and the pump body are both arranged in 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 flow between the container and the battery module through the liquid inlet pipeline and the liquid return pipeline. The battery device can realize cooling and thermal management of a single battery module, realizes immersion fire fighting, avoids the possibility of battery fire from the source, and further improves the safety in use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery device and a use method. BACKGROUND

[0002] Lithium batteries are widely used in various electronic devices as a high-energy-density energy storage method. In the prior art, due to mechanical damage, overcharging, internal short circuit and other factors, the active material inside the lithium battery is prone to violent exothermic reaction and causes thermal runaway. Since the exothermic reaction of the lithium battery can occur without external oxygen, the lithium battery in thermal runaway will continue to occur and is difficult to extinguish

[0003] In order to enhance the safety of lithium batteries, the lithium batteries in the related art usually adopt control methods such as physical isolation and temperature monitoring. However, these control methods have the problems of unsatisfactory fire extinguishing effect, the need for manual intervention, the inability to completely eliminate the possibility of fire, the generation of a large amount of harmful substances, and the easy cause of environmental pollution. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, the present application provides a battery device which can cool and manage a single battery module, achieve immersion fire extinguishing, and avoid the possibility of battery fire from the source, thereby improving the safety of use.

[0006] The present application also provides a use method based on the above battery device.

[0007] The battery device of the present application comprises:

[0008] A container for storing immersion liquid;

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

[0010] A liquid inlet pipeline and a liquid return pipeline, both of which 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 return the immersion liquid in the battery module to the container;

[0011] A first valve and a pump body, both of which are provided in 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 through the liquid inlet pipeline and the liquid return pipeline.

[0012] In some embodiments, a second valve is included, which is arranged in the return liquid pipeline, and when the battery module is abnormal, the second valve is opened to connect the battery module and the container.

[0013] In some embodiments, a plurality of the first valves, the second valves and the battery modules are included, 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 the first valves are respectively arranged in the plurality of the liquid inlet branches, the plurality of the second valves are respectively arranged in the plurality of the liquid return branches, and the plurality of the battery modules are respectively connected between the plurality of the liquid inlet branches and the plurality of the liquid return branches.

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

[0016] And / or, a second throttling valve is included, which is arranged in the liquid return pipeline.

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

[0018] In some embodiments, a filter is included, which is arranged in the liquid return pipeline, and the filter is used to filter the immersion liquid flowing back to the container.

[0019] In some embodiments, the filter includes a filtering area and a clean liquid area, the filtering area is used to filter gas and particulate matters, and the filtering area is connected with a dirty gas treatment device, and the clean liquid area is used to store the filtered immersion liquid, and the clean liquid area is connected with the container.

[0020] In some embodiments, a housing is included, and the container, the pump body and the filter are integrated in the housing.

[0021] In some embodiments, a temperature regulating system is included, which includes:

[0022] a temperature regulating unit;

[0023] a temperature regulating inlet pipeline and a temperature regulating return pipeline, both of which are connected with the temperature regulating unit, and both of which are used to circulate and deliver a temperature regulating medium to the battery module to achieve temperature regulation of the battery module.

[0024] In some embodiments, the temperature regulating system includes a temperature regulating pipeline, which is connected between the temperature regulating inlet pipeline and the temperature regulating return pipeline and arranged in the container, and the temperature regulating pipeline is used to achieve heat exchange between the temperature regulating medium and the immersion liquid in the container.

[0025] And / or, the temperature regulating system comprises a shell, the battery module is arranged in the shell, the temperature regulating inlet and the temperature regulating outlet are connected with the shell, and the temperature regulating medium is used to pass into the shell and exchange heat with the battery module.

[0026] The use method of the embodiment of the application comprises:

[0027] Detecting an operating parameter of the battery module;

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

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

[0030] Beneficial effects: the battery equipment and use method of the embodiment of the application can realize cooling and thermal management of a single battery module, realize immersion fire extinguishing, and avoid the possibility of battery fire from the source, thereby improving the safety of use. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the battery equipment of the embodiment of the application.

[0032] Reference signs:

[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 - filter area; 14 - clean liquid area; 15 - waste gas treatment device; 16 - shell; 17 - temperature regulating system; 18 - temperature regulating unit; 19 - temperature regulating inlet; 20 - temperature regulating outlet; 21 - temperature regulating pipe; 22 - shell. DETAILED DESCRIPTION

[0034] The embodiments of the application 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 are intended to explain the application, and cannot be understood as a limitation of the application.

[0035] As Figure 1 shown, the battery equipment of the embodiment of the application comprises 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 immersion liquid. For example, as 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 structure, a tank structure, a bottle structure, etc. The immersion liquid can be a liquid with a fire-fighting function, which can be a liquid such as perfluoroacetone. Normally, the container 1 can always store some immersion liquid. It should be noted that since the immersion liquid can also be used for temperature management of the battery module 2, the immersion liquid should have good thermal conductivity. At the same time, since the immersion liquid needs to be introduced 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 in communication with the container 1. For example, as shown in Figure 1 The battery module 2 can be a single battery, and the battery module 2 can include a battery shell. The inner cavity of the battery shell can be in communication with the container 1 through a corresponding pipeline, thereby meeting the use needs of introducing 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 deliver the immersion liquid in the container 1 to the container 1, and the liquid return pipeline 4 is used to return the immersion liquid in the battery module 2 to the container 1.

[0039] For example, as shown in Figure 1 One end of the liquid inlet pipeline 3 can be in communication with 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 in communication with the battery shell of the battery module 2. One end of the liquid return pipeline 4 can be in communication with the battery shell of the battery module 2, and the other end of the liquid return pipeline 4 can be in communication with 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, and the pump body 6 and the first valve 5 can be connected in series on the liquid inlet pipeline 3, and 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 pipeline 3 and the liquid return pipeline 4. For example, the abnormality of the battery module 2 can be temperature rise of the battery module 2, thermal runaway of the battery module 2, etc. When it is monitored that the battery module 2 has an abnormality during operation, the control device, etc. can control the first pump to be opened, or the pump body 6 can be started. At this time, the immersion liquid in the container 1 can be delivered by the pump body 6 into the battery shell of the battery module 2, so that the battery shell can be filled with the immersion liquid, and then the immersion liquid can be returned to the container 1 from the liquid return pipeline 4 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, so that the cooling of the battery module 2 can be realized, and the situation that the temperature of the battery module 2 is too high during operation is avoided. Secondly, when the battery module 2 is in thermal runaway, the timely immersion of the immersion liquid can also play a role in fire extinguishing, thereby ensuring the safety of use.

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

[0044] In some embodiments, the battery equipment comprises a second valve 7, the second valve 7 is arranged on the liquid return pipeline 4, and the second valve 7 is opened to communicate the battery module 2 and the container 1 when the battery module 2 is abnormal.

[0045] For example, as shown in the figure, Figure 1 The second valve 7 can be connected in series on the liquid return pipeline 4, and the second valve 7 can be arranged adjacent to the outlet of the battery shell of the battery module 2. When the above-mentioned first valve 5 and the pump body 6 are opened, the second valve 7 is also opened at the same time, thereby meeting the use requirement of 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, and further improves the safety and controllability of use.

[0046] In some embodiments, the first valve 5, the second valve 7 and the battery module 2 are all provided with a plurality of, the liquid inlet pipeline 3 comprises a plurality of liquid inlet branches 8, the liquid return pipeline 4 comprises a plurality of liquid return branches 9, the plurality of first valves 5 are respectively arranged on the plurality of liquid inlet branches 8, the plurality of second valves 7 are respectively arranged on the plurality of liquid return branches 9, and the plurality of battery modules 2 are respectively connected between the plurality of liquid inlet branches 8 and the plurality of liquid return branches 9.

[0047] For example, as shown in the figure, Figure 1 The first valve 5, the second valve 7 and the battery module 2 can all be provided with four, the liquid inlet pipeline 3 can comprise a liquid inlet main pipe section and four liquid inlet branches 8, the liquid inlet main pipe section can be connected with the container 1, one end of the four liquid inlet branches 8 can be connected with the liquid inlet main pipe section, and the other end of the four liquid inlet branches 8 can be respectively connected with the battery shell 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 can comprise a liquid return main pipe section and four liquid return branches 9, the liquid return main pipe section can be directly connected with the container 1, one end of the four liquid return branches 9 can be connected with the liquid return main pipe section, and the other end of the four liquid return branches 9 can be respectively connected with the four battery modules 2, and the above-mentioned four second valves 7 can be installed on the four liquid return branches 9 one by one.

[0049] Thus, the relative independent arrangement of multiple battery modules 2 is realized, when an individual battery module operates abnormally, the first valve 5 and the second valve 7 corresponding to the abnormal battery module 2 can be opened, so that point-to-point delivery of the immersion liquid to the abnormal battery module 2 can be realized, which is beneficial to enhance the control effect and improve the efficiency of thermal management.

[0050] In some embodiments, the battery device comprises a first throttling valve 10, which is arranged on the liquid inlet pipeline 3 and located between the pump body 6 and the battery module 2. For example, as shown in Figure 1 , the first throttling valve 10 and the pump body 6 can be installed on the above-mentioned liquid inlet main pipe section, and the first throttling valve 10 can be located downstream of the pump body 6. The first throttling valve 10 can control the pressure and flow of the immersion liquid delivered to the battery module 2, which is beneficial to realize accurate control.

[0051] In some embodiments, the battery device comprises a second throttling valve 11, which is arranged on the liquid return pipeline 4. For example, as shown in Figure 1 , the second throttling valve 11 can be arranged on the above-mentioned liquid return main pipe section. The second throttling valve 11 can control the pressure and flow of the immersion liquid output from the battery module 2, which is beneficial to further improve the accuracy and precision of the control.

[0052] In some embodiments, the first valve 5 and the second valve 7 are both one-way valves. For example, as shown in Figure 1 , the first valve 5 allows the immersion liquid in the container 1 to flow to the battery module 2 in one direction, and the second valve 7 allows the immersion liquid in the battery module 2 to flow to the container 1 in one direction. In this way, on the one hand, the immersion liquid backflow is avoided, and the stability of the operation is ensured.

[0053] On the other hand, the first valve 5 and the second valve 7 can be relieved of the additional control device, 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 the fire fighting and thermal management of the battery module 2 operating abnormally. Thus, the overall structural complexity can be simplified, and the operation reliability can be improved.

[0054] In some embodiments, the battery device comprises a filter 12, which is arranged on the liquid return pipeline 4 and used to filter the immersion liquid flowing back to the container 1.

[0055] For example, as shown in Figure 1 , the filter 12 can be installed on the above-mentioned liquid return main pipe section. The filter 12 can filter the gas, particulate matter, etc. in the immersion liquid, so as to ensure the purity of the immersion liquid flowing to the container 1, avoid the situation that the gas and other impurities easily cause pipeline blockage, and ensure the delivery efficiency of the immersion liquid.

[0056] In some embodiments, the filter 12 comprises a filtering area 13 and a clean liquid area 14, the filtering area 13 is used for filtering gas and particulate matter, and the filtering area 13 is connected with the dirty gas treatment device 15, the clean liquid area 14 is used for buffering the filtered immersion liquid, and the clean liquid area 14 is connected with the container 1.

[0057] For example, as shown in Figure 1 The filtering area 13 can be arranged above the clean liquid area 14, the filtering area 13 can realize the filtration of gas and particulate matter, the generated gas can be transported to the dirty gas treatment device 15, and then can be concentrated and treated by burning or the like, so as to realize the full-closed operation of the whole battery equipment, and realize the pollution-free emission and green energy-saving and environmental protection 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 can be transported to the container 1 through the pipeline between the clean liquid area 14 and the container 1, so as to realize the recycling of the immersion liquid, and realize the cost reduction and benefit increase.

[0059] In some embodiments, the battery equipment comprises a shell 16, and the container 1, the pump body 6 and the filter 12 are integrated in the shell 16. For example, as shown in Figure 1 The shell 16 can be generally in the form of a box, specifically in the form of a cuboid, and the above-mentioned container 1, pump body 6, filter 12 and first throttling valve 10 can be assembled in the shell 16, so as to realize the integration of components and facilitate the installation and arrangement.

[0060] In some embodiments, as shown in Figure 1 The battery equipment comprises a temperature adjusting system 17, the temperature adjusting system 17 comprises a temperature adjusting unit 18, a temperature adjusting inlet path 19 and a temperature adjusting return path 20, the temperature adjusting inlet path 19 and the temperature adjusting return path 20 are connected with the temperature adjusting unit 18, and the temperature adjusting inlet path 19 and the temperature adjusting return path 20 are used for circulating and transporting the temperature adjusting medium to the battery module 2 to realize the temperature adjustment of the battery module 2.

[0061] For example, the temperature adjusting unit 18 can comprise a temperature adjusting pump, a storage tank and the like, the storage tank can store water and other temperature adjusting medium, one end of the temperature adjusting inlet path 19 and the temperature adjusting return path 20 can be connected with the storage tank, and the other end of the temperature adjusting inlet path 19 and the temperature adjusting return path 20 can be connected with temperature adjusting plates and other components, the temperature adjusting plates can be in contact with the above-mentioned battery module 2 and the like, and the temperature adjusting pump can be arranged on one of the temperature adjusting inlet path 19 and the temperature adjusting return path 20.

[0062] When the temperature adjusting pump operates, the temperature adjusting medium can be transported to the temperature adjusting plates through the temperature adjusting inlet path 19, and then can realize the heat exchange with the battery module 2 through the temperature adjusting plates, so as to realize the temperature adjustment of the battery module 2, and then the temperature adjusting medium in the temperature adjusting plates can be discharged to the storage tank through the temperature adjusting return path 20.

[0063] It should be noted that, in use, the temperature of the battery module 2 can be adjusted by means of the circulation of the immersion liquid and the operation of the temperature regulating system 17, so that the efficiency and effect of the heat management and control can be improved.

[0064] In some embodiments, the temperature regulating system 17 comprises a temperature regulating pipe 21, which is connected between the temperature regulating inlet 19 and the temperature regulating outlet 20 and arranged in the container 1, and is used to realize heat exchange between the temperature regulating medium and the immersion liquid in the container 1.

[0065] For example, as shown in Figure 1 The temperature regulating pipe 21 can be a liquid cooling pipe or the like, which can be inserted into the container 1. The two ends of the temperature regulating pipe 21 can be connected to the temperature regulating inlet 19 and the temperature regulating outlet 20, respectively. When the temperature regulating unit 18 is operated, the temperature regulating medium can also be delivered to the temperature regulating pipe 21, so that the temperature of the immersion liquid in the container 1 can be adjusted by means of the temperature regulating pipe 21, so that the temperature of the immersion liquid in the container 1 can be controlled within a reasonable range, which is beneficial to ensure the temperature regulation and fire-fighting effect during use.

[0066] In some embodiments, the temperature regulating system 17 comprises a shell 22, the battery module 2 is arranged in the shell 22, and the temperature regulating inlet 19 and the temperature regulating outlet 20 are connected to the shell 22, and the temperature regulating medium is used to pass into the shell 22 and exchange heat with the battery module 2.

[0067] For example, as shown in Figure 1 The shell 22 can be a square shell, and the plurality of first valves 5, the plurality of battery modules 2 and the plurality of second valves 7 can be assembled in the shell 22. The temperature regulating medium can be directly passed into the shell 22, so that heat exchange can be realized in the plurality of battery modules 2 in the shell 22, and the temperature of the battery module 2 can be adjusted.

[0068] The use method of the embodiments of the present application will be described below.

[0069] The use method of the embodiments of the present application comprises:

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

[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 operated by the corresponding control device to be opened, so that the immersion liquid in the container 1 can be delivered to the corresponding battery module 2, so that the temperature of the battery module 2 can be adjusted.

[0072] If the battery module abnormality is removed after the immersion liquid is supplied for a set duration, the first valve 5 and the pump body 6 are closed, and if the operating parameter is not removed, the immersion liquid continues to be supplied to the battery module 2.

[0073] Specifically, if only the temperature of the individual battery module 2 is abnormal, after the immersion liquid is supplied, the temperature of the battery module 2 is controlled and restored to the allowed temperature range, at this time, it is indicated that the abnormality of the battery module 2 can be 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 the individual battery module 2 has thermal runaway and burns, at this time, even if the immersion liquid is supplied to the battery module 2, the battery module 2 cannot continue to operate subsequently, therefore, it is necessary to keep the immersion liquid supplied to the battery module 2 continuously, thereby avoiding the situation that the thermal runaway of the battery module 2 spreads to other battery modules 2, and ensuring the stable operation of other battery modules 2.

[0075] A specific example of the battery device of the embodiment of the application is described below.

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

[0077] 1. Circulating "immersion" liquid: A special "immersion" liquid (i.e. immersion liquid) is used, 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 the container 1, the pump body 6, the first throttling valve 10 and the filter 12), the motor of the pump body 6 starts to work, and the "immersion" liquid is injected into the lithium battery module through the one-way piercing valve (the first valve 5). Step 2: The "immersion" liquid circulates in the lithium battery module (the battery module 2) and continuously absorbs heat until the temperature of the lithium battery module decreases to the safe range. Step 3: When the temperature of the lithium battery module decreases to the safe range, the motor stops working, the one-way piercing valve closes, and the "immersion" liquid stops being injected. Step 4: The liquid cooling unit (the temperature adjusting unit 18) starts to work to cool the "immersion" liquid, so that it reenters the circulating state.

[0078] 2. Automatic start of the "immersion" system: When the lithium battery module has an abnormality (thermal runaway), the system automatically detects the abnormality and automatically starts the motor to open the one-way piercing valve to inject the "immersion" liquid into the abnormal battery module to achieve automatic fire extinguishing. Step 1: The lithium battery module has an abnormality, and the system automatically detects the abnormality. Step 2: The system automatically starts the motor to open the one-way piercing valve to inject the "immersion" liquid into the abnormal battery module 2. Step 3: The "immersion" liquid circulates in the abnormal battery module 2 and continuously absorbs heat until the temperature of the abnormal battery module 2 decreases to the safe range.

[0079] 3. The fully enclosed "immersion" system design: this system design is fully enclosed, no pollution discharge, realizing green energy saving and environmental protection. Step one: the "immersion" liquid circulates in the lithium battery module and absorbs heat. Step two: the "immersion" liquid that has absorbed heat passes through the filter 12 to remove impurities and gas. Step three: the filtered "immersion" liquid enters the exhaust gas treatment device 15 and is burned or treated in bulk. Step four: the filtered "immersion" liquid is cooled by the liquid cooling unit.

[0080] 4. The cooperation of liquid cooling unit and "immersion" device: the liquid cooling unit and "immersion" device work together to intelligently adjust the temperature and ensure stable operation of the equipment. Step one: the liquid cooling unit starts to work and cools the "immersion" liquid. Step two: the liquid cooling unit and "immersion" device work together to intelligently adjust the temperature of each battery module 2 and ensure stable operation of the equipment.

[0081] 5. Equipped with high-efficiency filter 12: the high-efficiency filter 12 is used to remove impurities and gas in the "immersion" liquid, ensuring the purity of the "immersion" liquid and prolonging the service life of the equipment. Step one: the "immersion" liquid circulates in the lithium battery module and absorbs heat. Step two: the "immersion" liquid that has absorbed heat passes through the filter 12 to remove impurities and gas. Step three: the filtered "immersion" liquid enters the liquid cooling unit for cooling.

[0082] The beneficial effects of the technical solution are:

[0083] 1. Efficient heat management: the invention uses circulating "immersion" liquid to continuously absorb heat, saving space and maintaining the cooling efficiency of continuous heat transfer of the equipment. Compared with existing physical isolation and temperature monitoring technology, the 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 invention is equipped with a high-efficiency filter that can remove impurities and gas, ensuring the purity of the "immersion" liquid and prolonging the service life of the equipment. Compared with existing fire extinguishing systems, the invention does not produce a large amount of harmful substances during use, is friendly to the environment, and realizes an environmentally friendly closed-loop system.

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

[0086] 4. The "immersion" system design of the present application is fully enclosed, with no pollution emissions, achieving green energy saving. Compared with existing technologies, the fully enclosed system design of the present application can avoid the generation and emission of harmful substances during the treatment of lithium battery fire, is more friendly to the environment, and realizes an environmentally friendly closed-loop system.

[0087] 5. High-efficiency fire extinguishing effect: The "immersion" system design of the present application can be quickly started when a lithium battery abnormally occurs, and the "immersion" liquid is injected into the abnormal battery module through a one-way piercing valve, achieving a high-efficiency fire extinguishing effect. Compared with existing fire extinguishing systems, the "immersion" system design of the present application can quickly extinguish lithium battery fires in a short time, reducing the damage of fires to equipment and personnel.

[0088] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0089] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0090] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0091] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terms "comprising", "containing", "having" or "including" and their derivatives, mean "including but not limited to". The terms "coupled" and "connected", along with their derivatives, mean "directly or indirectly connected".

[0092] Although the above-mentioned embodiments have been shown and described, it is to be understood that the above-mentioned embodiments are exemplary, and are not to be construed as limiting the present disclosure, and the changes, modifications, replacements and variations made by those skilled in the art to the above-mentioned embodiments are within the protection scope of the present disclosure.

Claims

1. A battery device characterized by comprising: include: Container, the container being used to store the immersion liquid; A battery module, which is connected to the container; The container includes an inlet pipe and a return pipe, both of which are connected between the container and the battery module. The inlet pipe is used to transport the immersion liquid in the container to the container, and the return pipe is used to discharge the immersion liquid in the battery module back to the container. The first valve and the pump body are both located in the liquid inlet pipe. When the battery module is abnormal, the first valve opens and the pump body drives the immersion liquid to circulate between the container and the battery module through the liquid inlet pipe and the liquid return pipe. Temperature control system, the temperature control system comprising: Temperature control unit; Temperature regulating input and temperature regulating circuit, both of which are connected to the temperature regulating unit, and the temperature regulating input and temperature regulating circuit are used to circulate the temperature regulating medium to the battery module to achieve temperature regulation of the battery module; The temperature control system includes a housing and a temperature control tube. The battery module is disposed inside the housing. The temperature control inlet and the temperature control circuit are both connected to the housing. The temperature control medium is used to flow into the housing and exchange heat with the battery module. The temperature control tube connects the temperature control inlet and the temperature control circuit and is disposed inside the container. The temperature control tube is used to realize heat exchange between the temperature control medium and the immersion liquid in the container. During use, the temperature of the battery module is regulated by the delivery of the immersion liquid and the operation of the temperature control system, thereby improving the efficiency and effectiveness of thermal management.

2. The battery device according to claim 1, characterized by Includes a second valve, which is located in the return line, and opens to connect the battery module and the container when the battery module malfunctions.

3. The battery device according to claim 2, characterized by The first valve, the second valve, and the battery module are each provided with multiple valves; the liquid inlet pipeline includes multiple liquid inlet branches; and the liquid return pipeline includes multiple liquid return branches. Multiple first valves are respectively disposed in multiple liquid inlet branches, multiple second valves are respectively disposed in multiple liquid return branches, and multiple battery modules are respectively connected between multiple liquid inlet branches and multiple liquid return branches.

4. The battery device according to claim 2, characterized by Includes a first throttle valve, which is disposed in the liquid inlet pipeline and located between the pump body and the battery module; And / or, including a second throttle valve, the second throttle valve being disposed in the return line; And / or, both the first valve and the second valve are one-way valves.

5. The battery device according to claim 1, characterized by Includes a filter, which is disposed in the return line and is used to filter the immersion liquid returning to the container.

6. The battery device according to claim 5, characterized by The filter includes a filtration zone and a purified liquid zone. The filtration zone is used to filter gases and particulate matter and is connected to a waste gas treatment device. The purified liquid zone is used to buffer the filtered immersion liquid and is connected to the container.

7. The battery device according to claim 5, characterized by It includes a housing, and the container, the pump body, and the filter are integrated within the housing.

8. A method of using the battery device according to any one of the preceding claims 1-7, characterized in that, include: Detect the operating parameters of the battery module; If the operation parameter is abnormal, the first valve and the pump body are opened to circulate the immersion liquid into the battery module; After the immersion liquid is circulated for a set time, if the abnormality of the battery module is removed, the first valve and the pump body are closed, and if the operation parameter is not removed, the immersion liquid is continuously circulated into the battery module.

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