Exhaust device and method and energy storage heat management system

Abstract

The invention relates to the field of energy storage heat management, and discloses an exhaust device and method and an energy storage heat management system.The exhaust device comprises a liquid storage barrel, a driving module, a quality detection module and a controller, the liquid storage barrel can communicate with an energy storage device, and the driving module is used for providing power for first liquid in the liquid storage barrel to flow into the energy storage device; the gas in the energy storage device can push the second liquid in the energy storage device to the liquid storage barrel under the pushing of the first liquid; the quality detection module is used for detecting the qualitative change state of liquid in the liquid storage barrel and generating liquid difference information; the liquid difference information represents the difference between the mass of the first liquid discharged from the liquid storage barrel and the mass of the second liquid flowing into the liquid storage barrel; the controller is used for sending a first liquid injection ending instruction to the driving module under the condition of judging that the liquid difference information meets a preset qualitative change condition; the first liquid injection ending instruction enables the driving module to stop running. Accurate exhaust of the energy storage device is achieved, the service life of the energy storage device is prolonged, and the maintenance and replacement cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of energy storage thermal management, and in particular to an exhaust device, method and energy storage thermal management system. Background Art

[0002] In the prior art, the process of filling and venting the energy storage device often relies on the personal experience and skills of the on-site operator. Therefore, in actual operation, since the judgment of the amount of liquid injection is mainly based on the operator's naked eye observation and estimation, the amount of liquid injection is often insufficient, which results in a certain amount of gas remaining inside the energy storage device, so that the gas is not completely emptied. These gases may form bubbles during the operation of the equipment, affecting the efficiency and stability of the energy storage device, and may even cause equipment failure, increase maintenance costs, and cause safety hazards. It can be seen that due to the lack of precise monitoring and automatic control mechanisms, the process of filling and venting the energy storage device is full of uncertainty, and it is difficult to ensure the accuracy of the operation.

[0003] Therefore, the operation of filling and venting the energy storage device in the prior art needs to be improved urgently to increase its automation and accuracy and reduce the dependence on the operator's experience. Summary of the invention

[0004] In view of the above-mentioned problems in the prior art, the purpose of the present application is to solve the defects of the prior art in that the injection and exhaust operations of the energy storage device have low accuracy and low reliability.

[0005] In order to solve the above problems, the present application provides a device comprising a liquid storage tank, a driving module, a quality detection module and a controller, wherein the liquid storage tank can be connected to an energy storage device.

[0006] The driving module is used to provide power for the first liquid in the liquid storage barrel to flow into the energy storage device; the gas in the energy storage device can push the second liquid in the energy storage device into the liquid storage barrel under the impetus of the first liquid;

[0007] The quality detection module is used to detect the quality change state of the liquid in the liquid storage barrel and generate liquid difference information; the liquid difference information represents the difference between the mass of the first liquid discharged from the liquid storage barrel and the mass of the second liquid flowing into the liquid storage barrel;

[0008] The controller is used to send a first liquid injection end instruction to the driving module when it is determined that the liquid difference information meets the preset qualitative change condition; the first liquid injection end instruction causes the driving module to stop running.

[0009] Preferably, the exhaust device further comprises:

[0010] An exhaust valve driving module is provided on an exhaust pipe connecting the energy storage device and the liquid storage tank, and is used for closing the exhaust pipe after receiving a first closing instruction issued by the controller when the liquid difference information meets a preset condition;

[0011] A water circuit pressure detection module, disposed on a liquid inlet pipe connecting the energy storage device and the liquid storage barrel, for detecting a pressure state of the first liquid in the liquid inlet pipe and generating water circuit pressure information;

[0012] The liquid injection valve driving module is arranged on the liquid inlet pipe, and is used for closing the liquid inlet pipe after receiving a second closing instruction issued by the controller when the controller determines that the water circuit pressure information meets the preset pressure condition.

[0013] Preferably, the exhaust device further comprises a liquid level detection module, which is electrically connected to the controller and is used to detect the liquid level in the liquid storage barrel, and can generate liquid level information when the liquid level in the liquid storage barrel is lower than a preset liquid level.

[0014] Preferably, the exhaust device further comprises a display screen module for displaying the operation information of the driving module and / or the quality detection module, and for touch operation;

[0015] Alternatively, the exhaust device further comprises a key module, wherein the key module comprises two buttons and a plurality of indicator lights, wherein the two buttons are respectively used for turning on and off the driving module, and the plurality of indicator lights are used for displaying the liquid injection status of the exhaust device.

[0016] The present application also includes an energy storage thermal management system, which includes an energy storage device and an exhaust device as described in any of the above items, wherein the exhaust device is connected to the energy storage device through a liquid inlet pipe and an exhaust pipe, and the exhaust device can discharge the gas in the energy storage device by injecting liquid into the energy storage device.

[0017] Preferably, the energy storage device includes a thermal management host, a water circuit assembly and a battery module, the water circuit assembly includes a return pipe and a water outlet pipe, and the liquid in the liquid storage barrel can flow through the liquid inlet pipe, the thermal management host, the return pipe, the battery module, the water outlet pipe and the exhaust pipe in sequence and then flow back to the liquid storage barrel.

[0018] The present application also includes an exhaust method, which is applied to the exhaust device as described in any one of the above items, and the method includes:

[0019] Turning on the driving module to allow the first liquid in the liquid storage barrel to flow into the energy storage device, so that the first liquid pushes the second liquid in the energy storage device into the liquid storage barrel;

[0020] Detecting the qualitative change state of the first liquid and the second liquid in the liquid storage barrel;

[0021] Determining whether the qualitative change state meets a preset condition;

[0022] When the qualitative change state meets the preset qualitative change condition, closing the driving module;

[0023] When the qualitative change state does not meet the preset qualitative change condition, the driving module is controlled to continue running.

[0024] Preferably, before detecting the qualitative change state of the first liquid and the second liquid in the liquid storage barrel, the method further comprises:

[0025] The exhaust valve driving module is turned on to open the exhaust pipe connecting the energy storage device and the liquid storage barrel, and the injection valve driving module is turned on to open the liquid inlet pipe connecting the energy storage device and the liquid storage barrel.

[0026] Preferably, when the qualitative change state meets the preset qualitative change conditions, the method further includes:

[0027] Turning off the exhaust valve driving module to close the exhaust pipe connecting the energy storage device and the liquid storage barrel;

[0028] Detecting the pressure state of the first liquid in the liquid inlet pipe connecting the energy storage device and the liquid storage barrel;

[0029] Determining whether the pressure state meets a preset pressure condition;

[0030] When the pressure state meets the preset pressure condition, closing the liquid injection valve driving module to close the liquid inlet pipe;

[0031] When the pressure state does not meet the preset pressure condition, the driving module is controlled to continue to operate.

[0032] Preferably, after closing the injection valve driving module to close the liquid inlet pipe, the method further comprises:

[0033] Delay 3-30 seconds to shut down the driver module.

[0034] Based on the above technical solution, an exhaust device, method and energy storage thermal management system described in this application have the following beneficial effects:

[0035] Through the design of electrical connection between the quality detection module and the drive module and the controller, automatic control of the filling and exhaust process of the energy storage device is realized. When the quality change state of the liquid in the liquid storage barrel meets the preset conditions, the controller will automatically send an instruction to stop the operation of the drive module, and the operation of filling and exhausting the energy storage device can be completed without human intervention, which reduces the possibility of human error operation, improves the reliability of the exhaust process, ensures the stable operation of the energy storage device, avoids pressure fluctuations or liquid shortage caused by manual operation, and improves the exhaust efficiency of the energy storage device through automatic control of the exhaust process;

[0036] Furthermore, by injecting liquid into the energy storage device to discharge its gas, and detecting the mass change of the liquid in the liquid storage barrel, it is possible to accurately determine whether the gas in the energy storage device has been completely discharged. When the liquid difference information shows that the mass change of the liquid in the liquid storage barrel tends to be stable, it means that the gas in the energy storage device has been basically discharged, thereby avoiding problems such as insufficient exhaust.

[0037] In addition, by adopting the above-mentioned automatic exhaust and liquid replenishment exhaust device, it can adapt to a variety of different system requirements and has wide applicability and practicality;

[0038] Therefore, through the above-mentioned technical means of the present application, accurate exhaust of the energy storage device is achieved, the impact and wear of the gas on the internal components of the energy storage device are reduced, the service life of the energy storage device is extended, and the cost of maintenance and replacement is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is a three-dimensional diagram of the energy storage thermal management system (battery module not shown) provided in an embodiment of the present application.

[0041] Figure 2 yes Figure 1 A partial enlarged view of point A in the figure.

[0042] Figure 3 It is a side view of the energy storage thermal management system (battery module not shown) provided in an embodiment of the present application.

[0043] Figure 4 It is a schematic diagram of the structure of the exhaust device provided in an embodiment of the present application.

[0044] Figure 5It is a flowchart of the exhaust method provided in an embodiment of the present application during the liquid injection process.

[0045] Figure 6 It is a flowchart of the exhaust method provided in an embodiment of the present application during the liquid replenishment process.

[0046] Wherein, the reference numerals are as follows: exhaust device 100, liquid storage barrel 11, exhaust pipe insertion port 111, observation window 112, liquid filling port 113, electronic scale 12, controller 13, exhaust valve 14, water pressure sensor 15, liquid injection valve 16, liquid level sensor 17, manual ball valve 18, liquid injection pump 19, suction pipe 191;

[0047] Energy storage thermal management system 200, energy storage device 300, thermal management host 31, water circuit assembly 32, primary water return pipe 3211, secondary water return pipe 3212, tertiary water return pipe 3213, primary water outlet pipe 3221, secondary water outlet pipe 3222, tertiary water outlet pipe 3223, liquid inlet pipe 323, exhaust pipe 324. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0049] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0050] [Example 1]

[0051] like Figure 1-Figure 4 As shown, Embodiment 1 discloses an exhaust device 100, which is applied to an energy storage thermal management system 200 to perform liquid injection and exhaust of an energy storage device 300. Specifically, the exhaust device 100 is connected to the energy storage device 300 through a liquid inlet pipe 323 and an exhaust pipe 324, and the exhaust device 100 can exhaust the gas in the energy storage device 300 by injecting liquid into the energy storage device 300.

[0052] like Figure 1 As shown, the energy storage device 300 includes a thermal management host 31, a water circuit assembly 32 and a battery module (not shown in the figure), wherein the water circuit assembly 32 includes a return pipe and a water outlet pipe, the liquid storage barrel 11 is connected to the thermal management host 31 through a liquid inlet pipe 323, and the two ends of the battery module are respectively connected to the thermal management host 31 through the return pipe and connected to the liquid storage barrel 11 through the water outlet pipe, and an exhaust pipe 324 is also provided between the water outlet pipe and the liquid storage barrel 11.

[0053] In the embodiment of the present specification, the return pipe and the outlet pipe each have several branches, specifically, the outlet pipe includes a primary outlet pipe 3221, multiple secondary outlet pipes 3222, and multiple tertiary outlet pipes 3223, that is, the multiple secondary outlet pipes 3222 are connected to the primary outlet pipe 3221, and the multiple secondary outlet pipes 3222 are arranged in sequence along the horizontal extension direction of the primary outlet pipe 3221. Multiple tertiary outlet pipes 3223 are provided on each secondary outlet pipe 3222, and the multiple tertiary outlet pipes 3223 are arranged in sequence along the vertical extension direction of the secondary outlet pipe 3222. The outlet ends of each tertiary outlet pipe 3223 are connected to the inner pipe of the battery module. The water inlet ends are connected; the design form of the return pipe is similar to that of the outlet pipe, and the return pipe also includes a primary return pipe 3211, multiple secondary return pipes 3212, and multiple tertiary return pipes 3213, that is, multiple secondary return pipes 3212 are connected to the primary return pipe 3211, and multiple secondary return pipes 3212 are arranged in sequence along the horizontal extension direction of the primary return pipe 3211. Multiple tertiary return pipes 3213 are provided on each secondary return pipe 3212, and multiple tertiary return pipes 3213 are arranged in sequence along the vertical extension direction of the secondary return pipe 3212. The water inlet end of each tertiary return pipe 3213 is connected to the water outlet end of the pipeline in the battery module.

[0054] Furthermore, the number of drainage pipes corresponds to the number of secondary return pipes 3212, that is, the number of exhaust pipes 324 is also multiple, and the water inlet ends of the multiple exhaust pipes 324 are respectively connected to the water outlet ends of each secondary return pipe 3212, and the water outlet ends of each exhaust pipe 324 are connected to the liquid storage barrel 11.

[0055] like Figure 4As shown, the exhaust device 100 includes a liquid storage barrel 11, a driving module, a quality detection module and a controller 13.

[0056] Wherein, the liquid storage tank 11 can be connected to the energy storage device 300;

[0057] The driving module is used to provide power for the first liquid in the liquid storage barrel 11 to flow into the energy storage device 300; the gas in the energy storage device 300 can push the second liquid in the energy storage device 300 into the liquid storage barrel 11 under the push of the first liquid; specifically, after the first liquid in the liquid storage barrel 11 is pushed into the energy storage device 300, it can squeeze the gas in the energy storage device 300, and then the gas in the energy storage device 300 can push the second liquid in the energy storage device 300 into the liquid storage barrel 11;

[0058] The quality detection module is used to detect the qualitative change state of the liquid in the liquid storage barrel 11 and generate liquid difference information; the liquid difference information represents the difference between the mass of the first liquid discharged from the liquid storage barrel 11 and the mass of the second liquid flowing into the liquid storage barrel 11; specifically, when the first liquid in the liquid storage barrel 11 is pushed into the energy storage device 300, the mass of the first liquid in the liquid storage barrel 11 gradually decreases, and the weight of the liquid storage barrel 11 detected by the quality detection module also gradually becomes lighter, but the gas in the energy storage device 300 can push the second liquid in the energy storage device 300 to be discharged into the liquid storage barrel 11 under the squeezing action of the first liquid, so the mass of the second liquid in the liquid storage barrel 11 gradually increases, and the weight of the liquid storage barrel 11 detected by the quality detection module also gradually becomes heavier. In the embodiment of the present specification, after the gas in the energy storage device 300 is completely emptied, the mass of the first liquid flowing out of the liquid storage barrel 11 and the mass of the second liquid discharged from the energy storage device 300 are equal, so the mass detection module finally detects that the weight of the liquid in the liquid storage barrel 11 is the same as the weight of the liquid in the liquid storage barrel 11 when the energy storage device 300 is not filled with liquid and vented, that is, the liquid difference information is expressed as: M 第一液体 -M 第二液体 =0;

[0059] The controller 13 is used to send a first liquid injection end instruction to the driving module when it is determined that the liquid difference information meets the preset qualitative change condition; the first liquid injection end instruction causes the driving module to stop running.

[0060] In the embodiments of the present specification, only a branch including a secondary water outlet pipe 3222 and a secondary water return pipe 3212 is taken as an example to briefly describe the entire flow process of the liquid in the energy storage thermal management system 200: the first liquid in the liquid storage barrel 11 enters the thermal management host 31 through the liquid inlet pipe 323, and the first liquid squeezes the gas in the thermal management host 31, so that the gas pushes the second liquid in the thermal management host 31 to flow into the first water outlet pipe 3221, the second water outlet pipe 3222 and each tertiary water outlet pipe 3223 on the second water outlet pipe 3222 in turn, and then enters the battery module, circulates in the pipeline in the battery module, and then flows through each tertiary water return pipe 3213 and a secondary water return pipe 3212 in turn, and then gathers at the water outlet end of the secondary water return pipe 3212, and finally enters the liquid storage barrel 11 through the exhaust pipe 324.

[0061] In the embodiment of the present specification, the quality detection module and the driving module are both electrically connected to the controller 13. The quality detection module can detect the qualitative change state of the liquid in the liquid storage barrel 11 and generate a signal of liquid difference information, and finally send the signal of liquid difference information to the controller 13. The controller 13 can make a judgment on the signal of liquid difference information after receiving it. When the liquid difference information meets the preset qualitative change conditions, the controller 13 can send a first liquid injection end instruction to the driving module. After receiving the first liquid injection instruction, the driving module can stop running and end the operation of injecting and exhausting the energy storage device 300.

[0062] In the embodiment of this specification, the preset quality change condition means that the mass change of the liquid storage barrel 11 does not exceed ΔW within the continuous ΔT time. Therefore, the judgment is whether the difference between the mass of the first liquid and the second liquid does not exceed ΔW within the continuous ΔT time.

[0063] The principle of using the above-mentioned means for judgment is as follows: during the process of filling and exhausting, the gas in the energy storage device 300 will initially push the second liquid in the energy storage device 300 to flow rapidly, resulting in a large change in the mass of the second liquid flowing into the liquid storage barrel 11. However, as the first liquid in the energy storage device 300 gradually increases, the gas in the energy storage device 300 is discharged, and the gas in the energy storage device 300 will gradually slow down when pushing the second liquid to flow, and then the mass change of the liquid storage barrel 11 will also tend to stabilize. Therefore, when the mass change in the liquid storage barrel 11 does not exceed △W within a continuous time of △T, it means that the gas has pushed the flow of the second liquid very slowly, and the first liquid in the energy storage device 300 is close to being full, and it can be considered that the filling and exhausting of the energy storage device 300 is basically completed. For example, the preset quality change condition is △W≤1kg, and when the quality detection module detects that M 第一液体 -M 第二液体=0 and sends the liquid difference information to the controller. After receiving the liquid difference information, the controller can determine that the liquid difference information meets the preset qualitative change condition, and then the controller sends a first end injection instruction to the driving module to stop the operation of the driving module.

[0064] In one embodiment of the present specification, the driving module refers to the injection pump 19, which is arranged on the liquid inlet pipe 323 so as to be able to draw the first liquid in the liquid storage barrel 11 into the energy storage device 300. In other embodiments, the driving module can also refer to an electric actuator, for example, an electric motor drives a mechanical structure to promote the flow of liquid. There is no limitation on the specific setting of the driving structure, which can be selected according to specific application requirements, environmental conditions and cost considerations. As long as it can achieve the driving effect on the liquid in the liquid storage barrel 11, it belongs to the protection scope of this application.

[0065] In one embodiment of the present specification, the quality detection module refers to an electronic scale 12, which is arranged at the bottom of the liquid storage barrel 11 to detect the mass change of the liquid in the liquid storage barrel 11. In other embodiments, the quality detection module can also refer to a pressure sensor to infer the mass change of the liquid in the liquid storage barrel 11 by measuring the pressure change caused by the liquid flow; or it can also refer to a flow sensor to indirectly calculate the mass change by measuring the flow rate of the liquid; or it can be an optical sensor to detect the change in liquid quality by using optical principles, such as the change in refractive index. There is no limitation on the specific setting of the quality detection module, which can be selected according to specific application requirements, environmental conditions and cost considerations. As long as it can detect the quality of the liquid in the liquid storage barrel 11, it belongs to the protection scope of this application.

[0066] In the embodiment of the present specification, the quality detection module and the driving module are electrically connected to the controller 13 to realize automatic control of the filling and exhausting process of the energy storage device 300. When the quality change state of the liquid in the liquid storage barrel 11 meets the preset conditions, the controller 13 will automatically send an instruction to stop the operation of the driving module, and the operation of filling and exhausting the energy storage device 300 can be completed without human intervention, thereby reducing the possibility of human error, improving the reliability of the exhausting process, ensuring the stable operation of the energy storage device 300, avoiding pressure fluctuations or insufficient liquid caused by manual operation, and, through the automatic control of the exhausting process, also improving the exhausting efficiency of the energy storage device 300;

[0067] Furthermore, by injecting liquid into the energy storage device 300 so that the energy storage device 300 discharges its gas, and detecting the mass change of the liquid in the liquid storage barrel 11, it is possible to accurately determine whether the gas in the energy storage device 300 is completely discharged. When the liquid difference information indicates that the mass change of the liquid in the liquid storage barrel 11 tends to be stable, it indicates that the gas in the energy storage device 300 has been basically discharged, thereby avoiding problems such as insufficient exhaust.

[0068] In addition, by adopting the automatic exhaust and liquid replenishing exhaust device 100, it can adapt to a variety of different system requirements and has wide applicability and practicality;

[0069] Therefore, through the above-mentioned technical means of the present application, accurate exhaust of the energy storage device 300 is achieved, the impact and wear of the gas on the internal components of the energy storage device 300 are reduced, the service life of the energy storage device 300 is extended, and the cost of maintenance and replacement is reduced.

[0070] like Figure 1 As shown, the exhaust device 100 further includes an exhaust valve 14 drive module, a water circuit pressure detection module and a liquid injection valve 16 drive module.

[0071] The exhaust valve 14 driving module is disposed on the exhaust pipe 324, and is used to close the exhaust pipe 324 after receiving a first closing instruction issued by the controller 13 when the liquid difference information meets the preset conditions;

[0072] The water circuit pressure detection module is arranged on the liquid inlet pipe 323, and is used to detect the pressure state of the first liquid in the liquid inlet pipe 323 and generate water circuit pressure information;

[0073] The driving module of the injection valve 16 is arranged on the liquid inlet pipe 323, and is used for closing the liquid inlet pipe 323 after receiving a second closing instruction issued by the controller 13 when the controller 13 determines that the water circuit pressure information meets the preset pressure condition.

[0074] In the embodiment of the present specification, during the initial liquid injection and exhaust process, it is necessary to turn on the drive module, the liquid injection valve 16 drive module and the exhaust valve 14 drive module, so that the drive module can provide power for the first liquid to enter the thermal management host 31, the liquid injection valve 16 drive module can make the liquid inlet pipe 323 connected, and the exhaust valve 14 drive module can make the exhaust pipe 324 connected.

[0075] When the liquid difference information meets the preset qualitative change conditions, it also includes performing a liquid replenishment operation on the energy storage device 300, that is, not controlling the drive module and the injection valve 16 drive module to stop running, so that each drive module continues to operate in the original drive mode. At this time, the controller 13 needs to send a first closing instruction to the exhaust valve 14 drive module, so that the exhaust valve 14 drive module stops running and the exhaust pipe 324 is closed, so that the thermal management host 31 and the water circuit assembly 32 can be further replenished.

[0076] However, during the process of refilling, since there is no gas left in the energy storage device 300, continuous injection of liquid into the energy storage device 300 will cause the internal pressure of the energy storage device 300 to increase. Therefore, through the detection of the liquid inlet pipe 323 by the water circuit pressure detection module, the pressure inside the liquid inlet pipe 323 can be understood in real time, and water circuit pressure information can be generated. The water circuit pressure detection module can send the signal of the generated water circuit pressure information to the controller 13. The controller 13 can make a judgment after receiving the water circuit pressure information. When it is judged that the water circuit pressure information meets the preset pressure condition, the controller 13 can send a second closing instruction to the injection valve 16 drive module, and send a third closing instruction to the drive module. The injection valve 16 drive module can close the liquid inlet pipe 323 after receiving the second closing instruction, and the drive module can stop running after receiving the third closing instruction. At this time, the further refilling process of the energy storage device 300 ends.

[0077] In one embodiment of the present specification, the water circuit pressure detection module refers to the water circuit pressure sensor 15, which is arranged on the liquid inlet pipe 323 to detect the pressure of the liquid inlet pipe 323. In other embodiments, the specific arrangement of the water circuit pressure detection module is not limited and can be selected according to specific application requirements, environmental conditions and cost considerations. As long as it can realize the pressure detection function of the liquid inlet pipe 323, it belongs to the protection scope of the present application.

[0078] In one embodiment of the present specification, both the exhaust valve 14 drive module and the injection valve 16 drive module refer to electromagnetic valves, which are arranged on the corresponding pipelines to open and close the corresponding pipelines. The design of the electromagnetic valves enables them to respond quickly and enhance reliability, so as to achieve precise automatic control. In other embodiments, the structural forms of the exhaust valve 14 drive module and the injection valve 16 drive module can be selected according to specific application requirements, environmental conditions and cost considerations. As long as they can achieve the opening and closing of the corresponding pipelines, they are all within the protection scope of this application.

[0079] In the embodiments of the present specification, the automatic control of the exhaust valve 14 drive module and the injection valve 16 drive module by the controller 13 realizes further automation of the injection process, reduces manual intervention, and improves the efficiency and accuracy of injection; and, with the cooperation of the water circuit pressure detection module, when the internal pressure of the energy storage device 300 reaches the preset pressure condition, the controller 13 can automatically issue an instruction to close the drive module and the injection valve 16 drive module to prevent the energy storage device 300 from being over-pressurized, thereby avoiding damage or safety accidents caused by overpressure; furthermore, through real-time monitoring of liquid difference information and pressure information, the injection and replenishment process can be accurately controlled to ensure that the liquid inside the energy storage device 300 is sufficient but not excessive, thereby improving the working efficiency and safety of the energy storage device 300.

[0080] like Figure 4 As shown, the exhaust device 100 also includes a liquid level detection module, which is electrically connected to the controller 13 and is used to detect the liquid level in the liquid storage barrel 11. When the liquid level in the liquid storage barrel 11 is lower than a preset liquid level, liquid level information can be generated.

[0081] Furthermore, in the embodiment of the present specification, an observation window 112 and a liquid filling port 113 are provided on the upper wall surface of the liquid storage barrel 11, so that the liquid level in the liquid storage barrel 11 can be visually observed, and the liquid storage barrel 11 can be replenished through the liquid filling port 113 when the liquid in the liquid storage barrel 11 is insufficient.

[0082] In one embodiment of the present specification, the liquid level detection module refers to a liquid level sensor 17, which is disposed on the wall of the liquid storage barrel 11, preferably at the height of the preset liquid level, so as to be able to detect the liquid height in the liquid storage barrel 11 in real time. In other embodiments, the structural form of the liquid level detection module can be selected according to specific application requirements, environmental conditions and cost considerations, as long as it can detect the liquid height in the liquid storage barrel 11, it belongs to the protection scope of the present application.

[0083] In the embodiment of the present specification, the liquid level detection module can monitor the liquid level in the liquid storage barrel 11 in real time and is electrically connected to the controller 13, thereby realizing automatic monitoring of the liquid level without the need for manual on-site inspection; when the liquid level in the liquid storage barrel 11 is lower than the preset liquid level, the liquid level detection module can generate a signal of liquid level information and send it to the controller 13, and the controller 13 can automatically reduce the operating speed of the drive module or automatically stop the operation of the drive module according to the signal of the liquid level information to prevent the drive module from idling and avoid damage to the equipment. By monitoring the liquid level in real time, the liquid can be replenished in time when the liquid level is lower than the preset liquid level, thereby ensuring that the exhaust device 100 can work continuously and stably.

[0084] Preferably, the exhaust device 100 further includes a display screen module for displaying operation information of the driving module and / or the quality detection module, and for touch operation.

[0085] Meanwhile, the exhaust device 100 further includes a key module, which includes two buttons and a plurality of indicator lights. The two buttons are respectively used to turn on and off the driving module, and the plurality of indicator lights are used to display the liquid injection status of the exhaust device 100 .

[0086] In one embodiment of the present specification, the key module includes a buzzer, two buttons and three indicator lights, the three indicator lights are green, red and blue respectively, green indicates that the liquid filling and exhaust operation is completed, red indicates that the exhaust device 100 has a fault, and blue indicates that the liquid level detection module alarms (it is time to add liquid to the liquid storage barrel 11), and the two buttons are a run button and a stop button respectively. When any of the three indicator lights are on, the buzzer sounds to serve as a warning.

[0087] Specifically, after the rehydration process is completed, the buzzer will sound and the green indicator light will light up.

[0088] In the embodiments of this specification, the display screen module provides a graphical user interface that can intuitively display the operating information of the drive module and the quality inspection module, so that the operator can quickly understand the equipment status. Moreover, through the touch screen design, the operator can operate directly on the display screen module, which simplifies the operation process and improves the convenience of operation.

[0089] Furthermore, the indicator light of the key module provides clear visual feedback, and different colors represent different states of the exhaust device 100, so that the operator can quickly identify the working conditions of the exhaust device 100. In addition, the design of the buzzer provides an audible warning, and when the indicator light is on, the buzzer sounds, which can further remind the operator to pay attention to the state of the exhaust device 100, so that the operator can make subsequent operations in a timely manner.

[0090] like Figure 4 As shown, based on the fact that the number of secondary water outlet pipes 3222 and the number of secondary water return pipes 3212 in the water circuit assembly 32 are both multiple, the corresponding number of exhaust pipes 324 is also multiple. Therefore, a plurality of exhaust pipe 324 insertion ports 111 corresponding to the number of exhaust pipes 324 are provided on the liquid storage barrel 11, and the plurality of exhaust pipe 324 insertion ports 111 are arranged in an array in sequence on the upper wall surface of the liquid storage barrel 11.

[0091] In the embodiment of the present specification, a suction pipe 191 is provided at one end of the exhaust pipe 324, and the suction pipe 191 can be connected to the exhaust pipe 324 and is arranged inside the liquid storage barrel 11 to facilitate the absorption of liquid at the bottom of the liquid storage barrel 11; at the same time, a manual ball valve 18 is also provided on the suction pipe 191, which is preferably arranged at the connection between the exhaust pipe 324 and the suction pipe 191, so as to open and close the connection between the exhaust pipe 324 and the suction pipe 191.

[0092] [Example 2]

[0093] like Figure 5-Figure 6 As shown, Example 2 discloses an exhaust method, which is applied to the exhaust device 100 described in Example 1 to perform liquid injection exhaust on the energy storage device 300, such as Figure 5 As shown, the exhaust method includes:

[0094] S101, turning on the driving module, so that the first liquid in the liquid storage barrel 11 flows into the energy storage device 300, so as to push the second liquid in the energy storage device 300 into the liquid storage barrel 11 through the first liquid;

[0095] S103, detecting the qualitative change state of the first liquid and the second liquid in the liquid storage barrel 11;

[0096] S104, judging whether the qualitative change state meets the preset conditions;

[0097] When the qualitative change state meets the preset qualitative change conditions, the driving module is closed;

[0098] When the qualitative change state does not meet the preset qualitative change conditions, the drive module continues to operate.

[0099] In step S103 , the quality change state refers to: the difference between the mass of the first liquid discharged from the liquid storage barrel 11 and the mass of the second liquid flowing into the liquid storage barrel 11 within the duration ΔT.

[0100] In step S104, the preset condition refers to that the mass change of the liquid storage barrel 11 does not exceed ΔW within a duration of ΔT.

[0101] Before step S103, the method further includes the following steps:

[0102] S102 , opening the exhaust valve 14 driving module to open the exhaust pipe 324 connecting the energy storage device 300 and the liquid storage barrel 11 , and opening the injection valve 16 driving module to open the liquid inlet pipe 323 connecting the energy storage device 300 and the liquid storage barrel 11 .

[0103] This arrangement ensures that the pipelines connecting the energy storage device 300 and the liquid storage barrel 11 are all in a connected state.

[0104] In step S101, starting the driving module means that the operator presses the run button to automatically start the driving module of the exhaust valve 14 and the driving module of the injection valve 16, and automatically delays the time ΔT1 to start the driving module.

[0105] like Figure 6 As shown, after step S105, a further rehydration process of the energy storage device 300 is also included, and the method of the rehydration process includes:

[0106] S106, closing the exhaust valve 14 driving module to close the exhaust pipe 324 connecting the energy storage device 300 and the liquid storage barrel 11;

[0107] S107, detecting the pressure state of the first liquid in the liquid inlet pipe 323 connecting the energy storage device 300 and the liquid storage barrel 11;

[0108] S108, determining whether the pressure state meets the preset pressure condition;

[0109] When the pressure state meets the preset pressure condition, the injection valve 16 driving module is closed to close the liquid inlet pipe 323;

[0110] When the pressure state does not meet the preset pressure condition, the control drive module continues to operate.

[0111] After step S108, the following steps are also included:

[0112] S109, delay 3-30 seconds to shut down the drive module.

[0113] In step S109, it also specifically includes: delaying 3-30 seconds to close the exhaust valve 14 driving module and the injection valve 16 driving module.

[0114] The purpose of this setting is: by setting the delay time, the possible response time differences between different solenoid valves can be compensated, ensuring that all solenoid valves can act synchronously, thereby achieving precise control.

[0115] The above description has fully disclosed the specific implementation methods of the present application. It should be pointed out that any changes made by technicians familiar with the field to the specific implementation methods of the present application do not deviate from the scope of the claims of the present application. Accordingly, the scope of the claims of the present application is not limited to the above specific implementation methods.

Claims

1. An exhaust device, characterized in that: It includes a liquid storage tank, a driving module, a quality detection module and a controller. The liquid storage tank can be connected to the energy storage device. The driving module is used to provide power for the first liquid in the liquid storage barrel to flow into the energy storage device; the gas in the energy storage device can push the second liquid in the energy storage device into the liquid storage barrel under the impetus of the first liquid; The quality detection module is used to detect the quality change state of the liquid in the liquid storage barrel and generate liquid difference information; the liquid difference information represents the difference between the mass of the first liquid discharged from the liquid storage barrel and the mass of the second liquid flowing into the liquid storage barrel; The controller is used to send a first liquid injection end instruction to the driving module when it is determined that the liquid difference information meets the preset qualitative change condition; the first liquid injection end instruction causes the driving module to stop running.

2. The exhaust device according to claim 1, characterized in that: The exhaust device also includes: An exhaust valve driving module is provided on an exhaust pipe connecting the energy storage device and the liquid storage tank, and is used for closing the exhaust pipe after receiving a first closing instruction issued by the controller when the liquid difference information meets a preset condition; A water circuit pressure detection module, disposed on a liquid inlet pipe connecting the energy storage device and the liquid storage barrel, for detecting the pressure state of the first liquid in the liquid inlet pipe and generating water circuit pressure information; The liquid injection valve driving module is arranged on the liquid inlet pipe, and is used for closing the liquid inlet pipe after receiving a second closing instruction issued by the controller when the controller determines that the water circuit pressure information meets the preset pressure condition.

3. The exhaust device according to claim 1, characterized in that: The exhaust device also includes a liquid level detection module, which is electrically connected to the controller and is used to detect the liquid level in the liquid storage barrel. When the liquid level in the liquid storage barrel is lower than a preset liquid level, liquid level information can be generated.

4. The exhaust device according to claim 1, characterized in that: The exhaust device further comprises a display screen module for displaying the operation information of the driving module and / or the quality detection module, and for touch operation; Alternatively, the exhaust device further comprises a key module, wherein the key module comprises two buttons and a plurality of indicator lights, wherein the two buttons are respectively used for turning on and off the driving module, and the plurality of indicator lights are used for displaying the liquid injection status of the exhaust device.

5. An energy storage thermal management system, characterized in that: It includes an energy storage device and the exhaust device according to any one of claims 1 to 4, wherein the exhaust device is connected to the energy storage device through a liquid inlet pipe and an exhaust pipe, and the exhaust device can discharge the gas in the energy storage device by injecting liquid into the energy storage device.

6. The energy storage thermal management system according to claim 5, characterized in that: The energy storage device includes a thermal management host, a water circuit assembly and a battery module. The water circuit assembly includes a return pipe and a water outlet pipe. The liquid in the liquid storage barrel can flow through the liquid inlet pipe, the thermal management host, the return pipe, the battery module, the water outlet pipe and the exhaust pipe in sequence and then flow back to the liquid storage barrel.

7. An exhaust method, characterized in that: The method is applied to the exhaust device according to any one of claims 1 to 4, and the method comprises: Turning on the driving module to allow the first liquid in the liquid storage barrel to flow into the energy storage device, so as to push the second liquid in the energy storage device into the liquid storage barrel through the first liquid; Detecting the qualitative change state of the first liquid and the second liquid in the liquid storage barrel; Determining whether the qualitative change state meets a preset condition; When the qualitative change state meets the preset qualitative change condition, closing the driving module; When the qualitative change state does not meet the preset qualitative change condition, the driving module is controlled to continue running.

8. The exhaust method according to claim 7, characterized in that: Before detecting the qualitative change state of the first liquid and the second liquid in the liquid storage barrel, the method further includes: The exhaust valve driving module is turned on to open the exhaust pipe connecting the energy storage device and the liquid storage barrel, and the injection valve driving module is turned on to open the liquid inlet pipe connecting the energy storage device and the liquid storage barrel.

9. The exhaust method according to claim 7 or 8, characterized in that: When the qualitative change state meets the preset qualitative change condition, the method further includes: Turning off the exhaust valve driving module to close the exhaust pipe connecting the energy storage device and the liquid storage barrel; Detecting the pressure state of the first liquid in the liquid inlet pipe connecting the energy storage device and the liquid storage barrel; Determining whether the pressure state meets a preset pressure condition; When the pressure state meets the preset pressure condition, closing the liquid injection valve driving module to close the liquid inlet pipe; When the pressure state does not meet the preset pressure condition, the driving module is controlled to continue to operate.

10. The exhaust method according to claim 9, characterized in that: After the liquid injection valve driving module is closed to close the liquid inlet pipe, the method further includes: Delay 3-30 seconds to shut down the driver module.

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