Liquid temperature detection device, method, energy storage device, energy storage system, chip, medium, and program product

Abstract

The embodiment of the application provides a liquid temperature detection device, a method, an energy storage device, an energy storage system, a chip, a medium and a program product, an inlet pipe, one end of which is connected with a liquid outlet of a liquid cooling unit, and the other end of which is connected with a liquid inlet of a battery device, an outlet pipe, one end of which is connected with a liquid inlet of the liquid cooling unit, and the other end of which is connected with a liquid outlet of the battery device, a communication pipe, which is used for communicating the outlet pipe and the inlet pipe, a temperature sensing connecting pipe, which is arranged on the pipes of the inlet pipe, the outlet pipe and the communication pipe, and is used for acquiring a temperature value of the pipes, and a switching device, which is used for controlling the switching of at least one of the outlet pipe, the inlet pipe and the communication pipe according to the temperature value. The temperature of the liquid in the pipes of the liquid temperature detection device can be quickly calibrated, and the accuracy and reliability of the liquid temperature detection in the pipes are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of energy storage, and more particularly, to a liquid temperature detection device, method, energy storage device, energy storage system, chip, medium and program product. BACKGROUND

[0002] Under the background of increasing support for the development of new energy technologies worldwide, various technologies related to energy storage have been widely applied. In order to meet the demand for large-capacity energy storage devices, temperature control of the energy storage device is particularly important. Therefore, how to accurately control the temperature of the energy storage system is a problem to be solved. SUMMARY

[0003] The embodiments of the present application provide a liquid temperature detection device, method, energy storage device, energy storage system, chip, medium and program product, which can quickly calibrate the temperature of the liquid in the pipeline of the liquid temperature detection device, and improve the accuracy and reliability of the liquid temperature detection in the pipeline.

[0004] In a first aspect, the present application provides a liquid temperature detection device, comprising: a liquid inlet pipe, one end of the liquid inlet pipe being connected to a liquid outlet of a liquid cooling unit, and the other end being connected to a liquid inlet of a battery device; a liquid outlet pipe, one end of the liquid outlet pipe being connected to a liquid inlet of the liquid cooling unit, and the other end being connected to a liquid outlet of the battery device; a communication pipe for communicating the liquid outlet pipe and the liquid inlet pipe; a temperature sensing connection pipe arranged on the pipelines of the liquid inlet pipe, the liquid outlet pipe and the communication pipe, for obtaining a temperature value of the pipelines; and a switching device for controlling the switching of at least one of the liquid outlet pipe, the liquid inlet pipe and the communication pipe according to the temperature value.

[0005] In the technical solution of the embodiments of the present application, the switching device controls the switching of the liquid outlet pipe, the liquid inlet pipe and the communication pipe, quickly adjusts the temperature of the liquid between the pipelines, so that the temperature of the liquid in the pipelines remains consistent. More specifically, the pipeline of the liquid inlet pipe is relatively long, and the temperature of the liquid changes during transmission, or the temperature of the liquid between the input and output of the battery device changes. Through the control of the switching device, the temperature of the liquid in the pipelines remains consistent. In addition, the switching device controls and adjusts the temperature of the pipelines, which can improve the accuracy and reliability of the liquid temperature detection in the pipelines.

[0006] In some embodiments, the switching device comprises a first switching device arranged on the pipeline of the communication pipe, a second switching device arranged on the pipeline of the liquid outlet pipe close to the battery device, and a third switching device arranged on the pipeline of the liquid inlet pipe close to the battery device.

[0007] The technical scheme of the embodiment of the application controls the on-off of the outlet pipe, the inlet pipe and the communication pipe through the three on-off devices respectively, adjusts the temperature of the liquid between the pipes, keeps the temperature of the liquid in the pipes of the outlet pipe and the inlet pipe consistent, and controls and adjusts the temperature of the pipes through the three on-off devices respectively, so that the temperature of the liquid in the pipes of the liquid temperature detection device can be quickly calibrated through the backflow of the communication pipe, and the accuracy and reliability of the liquid temperature detection in the pipes of the outlet pipe and the inlet pipe are improved.

[0008] In some embodiments, the temperature sensing connecting pipe includes: a first temperature sensing connecting pipe arranged on the pipe of the inlet pipe close to the battery device, used to obtain a first temperature value; and a second temperature sensing connecting pipe arranged on the pipe of the inlet pipe close to the liquid cooling unit, used to obtain a second temperature value.

[0009] In the technical scheme of the embodiment of the application, a plurality of temperature sensing connecting pipes are arranged near the outlet pipe and the inlet pipe close to the battery device and the liquid cooling unit, and the temperature of the pipes is detected through the plurality of temperature sensing connecting pipes, so that the temperature of the liquid in the pipes can be detected more accurately, and the accuracy and reliability of the liquid temperature detection in the pipes are improved.

[0010] In some embodiments, in the case that the first temperature value and the second temperature value are different, the first on-off device is used to control the communication pipe to be on, the second on-off device is used to control the outlet pipe to be off, and the third on-off device is used to control the inlet pipe to be off; or, in the case that the first temperature value and the second temperature value are the same, the first on-off device is used to control the communication pipe to be off, the second on-off device is used to control the outlet pipe to be on, and the third on-off device is used to control the inlet pipe to be on.

[0011] In the technical scheme of the embodiment of the application, in the case that the first temperature value and the second temperature value are different, i.e. in the case that the liquid in the water-cooled plate in the battery device is residual, the communication pipe is controlled to be on, the outlet pipe and the inlet pipe are controlled to be off, and the liquid is backflowed quickly, so that the first temperature value and the second temperature value are the same.

[0012] In some embodiments, the temperature sensing connecting pipe further includes: a third temperature sensing connecting pipe arranged on the pipe of the outlet pipe close to the battery device, used to obtain a third temperature value.

[0013] In some embodiments, in the case that the first temperature value and the third temperature value are different, the first on-off device is used to control the communication pipe to be off, the second on-off device is used to control the outlet pipe to be on, and the third on-off device is used to control the inlet pipe to be on.

[0014] In the technical scheme of the embodiment of the application, in the case that the first temperature value and the third temperature value are different, i.e. in the case that the liquid in the pipe of the inlet pipe is residual, the communication pipe is controlled to be off, the outlet pipe and the inlet pipe are controlled to be on, and the liquid is backflowed, so that the first temperature value and the third temperature value are the same.

[0015] In some embodiments, the temperature sensing connecting pipe comprises: a straight pipe, a first fitting part and a second fitting part connected with the pipe, arranged at both ends of the straight pipe, the pipe diameter of the first fitting part and the second fitting part gradually increases in the axial direction of the straight pipe, a temperature sensor arranged on the inner wall of the straight pipe for detecting the temperature of the liquid flowing through the straight pipe.

[0016] In the technical scheme of the embodiments of the present application, by arranging the first fitting part and the second fitting part at both ends of the straight pipe, the temperature sensing connecting pipe can be quickly connected with the soft and hard pipes of various diameters of the liquid temperature detection device, improving the flexibility of the liquid temperature detection process, and in the case of failure of the temperature sensor, the temperature sensor can be replaced.

[0017] In some embodiments, the material of the straight pipe, the first fitting part and the second fitting part in the temperature sensing connecting pipe is polyvinyl chloride.

[0018] In the technical scheme of the embodiments of the present application, the material of the temperature sensing connecting pipe is set to polyvinyl chloride, so that the temperature sensing connecting pipe has good flexibility and can be easily bent, and can be matched and connected with different pipes.

[0019] In some embodiments, the on-off device comprises: a hollow pipe for liquid flowing through the pipe; a closure for limiting the flow of liquid through the pipe; a driver arranged between the hollow pipe and the closure, rotating around the axis of the driver to connect the hollow pipe or the closure with the pipe.

[0020] In the technical scheme of the embodiments of the present application, the switching of the hollow pipe and the closure is driven by the driver in the conversion control module, so as to control the on-off of the pipe, adjust the temperature of the liquid between the pipes, and keep the temperature of the liquid in the pipe consistent. In addition, by controlling and adjusting the temperature of the pipe through the on-off device, the accuracy and reliability of the liquid temperature detection in the pipe can be improved.

[0021] In a second aspect, the present application provides a liquid temperature detection method, comprising: obtaining a temperature value, the temperature value being used to represent the temperature of any one or more pipes in the outlet pipe, the inlet pipe or the communication pipe; and controlling the on-off of one or more of the outlet pipe, the inlet pipe and the communication pipe according to the temperature value.

[0022] The technical scheme of the embodiment of the application controls the opening and closing of the liquid outlet pipe, the liquid inlet pipe and the communication pipe through the opening and closing device, adjusts the temperature of the liquid between the pipes, and makes the temperature of the liquid in the pipes consistent, more specifically, the pipe of the liquid inlet pipe is long, and the temperature of the liquid changes in the transmission process, or the temperature of the liquid between the input port and the output port of the battery device changes, through the control of the opening and closing device, the temperature of the liquid in the pipe can be kept consistent through the rapid backflow of the communication pipe, in addition, the temperature of the pipe can be controlled and adjusted through the opening and closing device, and the accuracy and reliability of the liquid temperature detection in the pipe can be improved.

[0023] In some embodiments, the temperature value includes a first temperature value, a second temperature value and a third temperature value, the first temperature value is used to represent the temperature of the liquid inlet pipe close to the battery device, the second temperature value is used to represent the temperature of the liquid inlet pipe close to the liquid cooling unit, and the third temperature value is used to represent the temperature of the liquid outlet pipe close to the battery device, one end of the liquid inlet pipe is connected to the liquid outlet port of the liquid cooling unit, the other end is connected to the liquid inlet port of the battery device, one end of the liquid outlet pipe is connected to the liquid inlet port of the liquid cooling unit, and the other end is connected to the liquid outlet port of the battery device.

[0024] In some embodiments, the temperature value is obtained, including: in response to a test preparation instruction; according to the test preparation instruction, obtaining the first temperature value and the second temperature value, and / or obtaining the first temperature value and the third temperature value; in the case that the first temperature value and the second temperature value are the same, and / or in the case that the first temperature value and the third temperature value are the same, confirming that the test preparation is completed.

[0025] In the technical scheme of the embodiment of the application, after the test preparation instruction is obtained, the first temperature value and the second temperature value are obtained, which aims to detect the temperature of the two ends of the liquid inlet pipe to exclude the accumulated liquid, and finally after the accumulated liquid is excluded, in the case that the first temperature and the second temperature are the same, it is confirmed that the test preparation is completed. Similarly, the first temperature value and the third temperature value are obtained, which aims to detect the temperature of the two ends of the battery device to exclude the accumulated liquid in the battery device, so that the liquid temperature detection process is more accurate.

[0026] In some embodiments, the temperature value is obtained, including: in response to a test instruction; according to the test instruction, obtaining the first temperature value and the second temperature value.

[0027] In the technical scheme of the embodiment of the application, after the test instruction is received, the temperature of the two ends of the liquid inlet pipe is obtained to exclude the accumulated liquid, so that the liquid temperature detection process is more accurate.

[0028] In some embodiments, the on-off of one or more of the outflow pipe, the inflow pipe and the communication pipe is controlled according to the temperature value, including: in the case that the first temperature value and the second temperature value are different, the outflow pipe and the inflow pipe are controlled to be off, and the communication pipe is controlled to be on; or in the case that the first temperature value and the second temperature value are the same, the outflow pipe and the inflow pipe are controlled to be on, and the communication pipe is controlled to be off.

[0029] In the technical solution of the embodiments of the present application, in the case that the temperature of the two ends of the inflow pipe is different due to the problem of being too long during the test, the outflow pipe and the inflow pipe are controlled to be off, and the communication pipe is controlled to be on, so that the liquid is quickly returned through the communication pipe, and the temperature of the two ends of the inflow pipe is consistent.

[0030] In some embodiments, the temperature value is obtained, including: in response to a test pause instruction; and obtaining the first temperature value and the third temperature value according to the test pause instruction.

[0031] In the technical solution of the embodiments of the present application, in the case that the test is paused during the detection, it is necessary to detect whether the temperature of the two ends of the battery device is consistent, so the first temperature value and the third temperature value are obtained, so that the detection is more accurate.

[0032] In some embodiments, the on-off of one or more of the outflow pipe, the inflow pipe and the communication pipe is controlled according to the temperature value, including: in the case that the first temperature value and the third temperature value are different, the outflow pipe and the inflow pipe are controlled to be on, and the communication pipe is controlled to be off.

[0033] In a third aspect, the present application provides a chip, including: a processor configured to call and run a computer program from a memory, so that a device installed with the chip executes the liquid temperature detection method according to the second aspect or any one of the embodiments of the second aspect.

[0034] In a fourth aspect, the present application provides a computer readable storage medium, including: a computer program stored on the computer readable storage medium, when the computer program is run on a computer, the computer program causes the computer to execute the liquid temperature detection method according to the second aspect or any one of the embodiments of the second aspect.

[0035] In a fifth aspect, the present application provides a computer program product, the computer program product includes a computer program for executing the liquid temperature detection method according to the second aspect or any one of the embodiments of the second aspect.

[0036] In a sixth aspect, the present application provides an energy storage device, including a liquid cooling unit, a battery device and a liquid temperature detection device according to the first aspect or any one of the embodiments of the first aspect, the liquid temperature detection device is configured to connect the liquid cooling unit and the battery device, and adjust the temperature between the liquid cooling unit and the battery device.

[0037] In a seventh aspect, the present application provides an energy storage system, comprising a power conversion device and the energy storage device according to the sixth aspect, wherein the power conversion device is configured to electrically connect the power generation device and the energy storage device. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 Part of the structure of the battery device provided by the embodiments of the present application is shown.

[0039] Figure 2 The structure of the liquid temperature detection device provided by the embodiments of the present application is shown.

[0040] Figure 3 The structure of the liquid temperature detection device provided by the embodiments of the present application is shown.

[0041] Figure 4 Part of the structure of the liquid temperature detection device provided by the embodiments of the present application is shown.

[0042] Figure 5 The structure of the temperature sensing connecting pipe provided by the embodiments of the present application is shown.

[0043] Figure 6 The structure of the on-off device provided by the embodiments of the present application is shown.

[0044] Figure 7 The schematic flow chart of the liquid temperature detection method provided by the embodiments of the present application is shown.

[0045] Figure 8 The schematic flow chart of the liquid temperature detection method provided by the embodiments of the present application is shown.

[0046] Figure 9 The schematic flow chart of the liquid temperature detection method provided by the embodiments of the present application is shown.

[0047] Figure 10 The schematic flow chart of the liquid temperature detection method provided by the embodiments of the present application is shown.

[0048] REFERENCE SIGNS:

[0049] Battery device 10, box 11, battery cell 12, first box part 111, second box part 112, liquid temperature detection device 20, liquid inlet pipe 21, liquid outlet pipe 22, communication pipe 23, on-off device 24, first on-off device 241, second on-off device 242, third on-off device 243, hollow pipe 244, driver 245, closure 246, temperature sensing connecting pipe 25, first temperature sensing connecting pipe 251, second temperature sensing connecting pipe 252, third temperature sensing connecting pipe 253, fourth temperature sensing connecting pipe 254, straight pipe 255, first matching part 256, second matching part 257, liquid cooling unit 30.

[0050] In the drawings, the figures are not necessarily drawn to scale. DETAILED DESCRIPTION

[0051] The embodiments of the present application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description and examples of the following embodiments are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the description and claims of this application as well as the above discussion of the related art are intended to be illustrative only and are not intended to be limiting on the application. The terminology used in the description of the application herein, as well as in the claims that follow, unless otherwise expressly so defined by the context of the specification, shall be taken to refer to the appropriate generic

[0053] The positional words appearing in the following description are the directions shown in the drawings, and are not intended to limit the specific structure of the present application. In the description of the present application, it should be further noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. 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.

[0054] Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0055] "Multiple" appearing in the present application refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0056] All embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions, if not specifically stated.

[0057] If not specifically stated, all technical features and optional technical features of the present application can be combined with each other to form new technical solutions.

[0058] If not specifically stated, all steps of the present application can be performed in sequence or randomly, preferably in sequence. For example, the method comprises steps (a) and (b), which means that the method can comprise steps (a) and (b) in sequence, or steps (b) and (a) in sequence. For example, it is mentioned that the method can further comprise step (c), which means that step (c) can be added to the method in any order. For example, the method can comprise steps (a), (b) and (c), or steps (a), (c) and (b), or steps (c), (a) and (b), etc.

[0059] The battery apparatus mentioned in the embodiments of the present application can comprise one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can comprise a plurality of battery cells connected in series, in parallel or in a hybrid manner by busbar components.

[0060] In some embodiments, the battery cell assembly is usually formed by arranging a plurality of battery cells.

[0061] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0062] In some embodiments, the battery apparatus can be a battery pack comprising a box and one or more battery cell assemblies accommodated in the box.

[0063] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box by fixing the battery module in the box.

[0064] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0065] As an example, the box can comprise a first box and a second box. The first box and the second box are buckled to form a closed space inside the box to accommodate the battery cell assembly. Here, closed means covered or disconnected, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0066] As an example, the cabinet can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are connected with the frame, respectively, so that an enclosed space is formed inside the cabinet to accommodate the battery monomer assembly.

[0067] Embodiments of the present application provide an energy storage device including one or more battery clusters to improve the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices connected in series through a busbar to improve the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device.

[0068] The energy storage device can be used in an energy storage power station, a wind power system, a solar power system, a mobile power system, or a temporary power supply system, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during the off-peak period of electricity consumption, and provide electrical energy for related users or electrical equipment during the peak period of electricity consumption. The energy storage system provided by embodiments of the present application can be any power system that needs to use an energy storage device.

[0069] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0070] In some embodiments, the energy storage device can include a cabinet body and one or more battery clusters, and the battery clusters are accommodated in the cabinet body.

[0071] In some embodiments, the energy storage device can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0072] As an example, the thermal management module can include a liquid cooling unit, and the liquid cooling unit provides a cooling liquid for adjusting the temperature of the battery monomer through a pipeline to each battery device.

[0073] In some embodiments, the energy storage system can include one or more energy storage devices and a power conversion device (PCS) connected between a power generation device and the energy storage device. The power generation device is used to generate electrical energy, and the electrical energy generated by the power generation device can be stored in the energy storage device through the power conversion device. As an example, the power generation device can be a solar panel, a hydroelectric power generation device, a fire power generation device, a wind power generation device, etc. The specific type of the power generation device is not limited in the present application.

[0074] The energy storage system will generate a large amount of heat during the charging and discharging process. If heat management is not timely, the battery temperature will rise, leading to battery performance degradation, shortened life, and even potential safety hazards. As a kind of efficient heat exchange equipment, the liquid cooling unit is widely used in the thermal management of the energy storage system. The liquid cooling unit absorbs or releases heat through circulating liquid to achieve the purpose of cooling or heating. The liquid cooling unit and the energy storage system are usually connected by a pipeline to realize heat transfer. In order to improve the effect of thermal management, a temperature sensor is usually installed on the pipeline to detect the temperature of the liquid in the pipeline in real time and provide feedback for the control system.

[0075] Generally, the temperature of the liquid in the liquid cooling unit is increased or decreased to meet the required temperature of the liquid in the energy storage system. In the case of residual liquid in the pipeline between the liquid cooling unit and the energy storage system or the water-cooled plate of the energy storage system, the temperature detection is inaccurate, and the scheme of increasing or decreasing the temperature of the liquid in the liquid cooling unit cannot make the energy storage system obtain the liquid with ideal temperature value for thermal management.

[0076] In order to improve the accuracy of temperature detection and how to quickly calibrate the temperature of the pipeline in the liquid temperature detection device, the present application provides a liquid temperature detection device, comprising: a liquid inlet pipe, one end of the liquid inlet pipe is connected to the liquid outlet of the liquid cooling unit, the other end is connected to the liquid inlet of the battery device; a liquid outlet pipe, one end of the liquid outlet pipe is connected to the liquid inlet of the liquid cooling unit, the other end is connected to the liquid outlet of the battery device; a communication pipe for communicating the liquid outlet pipe and the liquid inlet pipe; a temperature sensing connection pipe arranged on the pipeline of the liquid inlet pipe, the liquid outlet pipe and the communication pipe for obtaining the temperature value of the pipeline; and an on-off device for controlling the on-off of at least one of the liquid outlet pipe, the liquid inlet pipe and the communication pipe according to the temperature value. In the technical scheme of the present application, the on-off of the liquid outlet pipe, the liquid inlet pipe and the communication pipe is controlled by the on-off device, the temperature of the liquid between the pipelines is quickly adjusted, the temperature of the liquid in the pipeline is kept consistent, and the accuracy and reliability of the liquid temperature detection in the pipeline are improved by controlling and adjusting the temperature of the pipeline by the on-off device.

[0077] Figure 1 A partial structure schematic diagram of the battery device 10 provided by the present application is shown. As shown in Figure 1 The battery device 10 of the present application can include a plurality of battery monomers 12 to meet different power requirements. The shape of the battery monomer 12 of the present application can be set according to actual application. For example, the battery monomer 12 can be a cylinder as shown in Figure 1 , or can be a cuboid as shown in Figure 1 , or other shapes, and the present application is not limited thereto.

[0078] It should be understood that Figure 1As shown, the battery device 10 of this embodiment may further include a housing 11, which can be used to accommodate multiple battery cells 12. The housing 11 of this embodiment has a hollow interior, and the multiple battery cells 12 are accommodated within the housing 11. The housing 11 may include two parts, referred to herein as a first housing portion 111 and a second housing portion 112, which are fastened together. The shapes of the first housing portion 111 and the second housing portion 112 can be determined according to the shape of the components housed inside, for example, according to the shape of the combination of the multiple battery cells 12 housed inside. At least one of the first housing portion 111 and the second housing portion 112 has an opening. For example, as... Figure 1 As shown, the first housing portion 111 and the second housing portion 112 can both be hollow cuboids with one open side each. The openings of the first housing portion 111 and the second housing portion 112 are opposite to each other, and the first housing portion 111 and the second housing portion 112 are interlocked to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 12. The multiple battery cells 12 are connected in parallel, series, or mixed and placed inside the housing 11 formed by the interlocking of the first housing portion 111 and the second housing portion 112.

[0079] For example, unlike Figure 1 As shown, either the first housing portion 111 or the second housing portion 112 may have only one hollow cuboid with an opening, while the other is plate-shaped to cover the opening. Taking the second housing portion 112 as a hollow cuboid with one opening, and the first housing portion 111 as a plate-shaped example, then the first housing portion 111 covers the opening of the second housing portion 112 to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 12.

[0080] Figure 2 A schematic diagram of the structure of a liquid temperature detection device 20 provided in an embodiment of this application is shown.

[0081] According to some embodiments of this application, refer to Figure 2 This application provides a liquid temperature detection device 20, comprising: an inlet pipe 21, one end of which is connected to the outlet of a liquid cooling unit 30 and the other end of which is connected to the inlet of a battery device 10; an outlet pipe 22, one end of which is connected to the inlet of the liquid cooling unit 30 and the other end of which is connected to the outlet of the battery device 10; a connecting pipe 23 for connecting the outlet pipe 22 and the inlet pipe 21; a temperature sensing connecting pipe 25, which is disposed on the pipes of the inlet pipe 21, the outlet pipe 22 and the connecting pipe 23, for obtaining the temperature value of the pipes; and an on / off device 24 for controlling the on / off state of at least one of the outlet pipe 22, the inlet pipe 21 and the connecting pipe 23 according to the temperature value.

[0082] likeFigure 2 As shown in the figure, the X direction is the length direction of the outlet pipe 22 and the inlet pipe 21, the Y direction is the width direction of the outlet pipe 22 and the inlet pipe 21, and the Z direction is the thickness direction of the outlet pipe 22 and the inlet pipe 21.

[0083] One end of the inlet pipe 21 is connected to the outlet of the liquid cooling unit 30, and the other end is connected to the inlet of the water-cooled plate of the battery device 10, so that the liquid in the liquid cooling unit 30 flows into the water-cooled plate for thermal management, which is cooling or heating, etc. One end of the outlet pipe 22 is connected to the inlet of the liquid cooling unit 30, and the other end is connected to the outlet of the water-cooled plate of the battery device 10, so that the liquid flowing through the water-cooled plate flows into the liquid cooling unit 30 again through the outlet pipe 22.

[0084] The communication pipe 23 is used to communicate the outlet pipe 22 and the inlet pipe 21. It should be understood that the number of the communication pipe 23 is not limited in the embodiment of the present application, which can be one or two. In addition, the specific position of the communication pipe 23 is not limited in the present application, for example, it can be set near the liquid cooling unit 30 for communication between the outlet pipe 22 and the inlet pipe 21, and for another example, it can also be set near the battery device 10 for communication between the outlet pipe 22 and the inlet pipe 21. It should be understood that the outlet pipe 22, the inlet pipe 21 and the communication pipe 23 can be referred to as pipes.

[0085] The on-off device 24 can be a switch, a ball valve, etc. It can be used to control the on-off of the pipe, and the embodiment of the present application does not make any limitation. The on-off device 24 can be set at any position of the pipe, which can be used to control the on-off of the pipe. The number of the on-off device 24 is not limited in the embodiment of the present application, for example, the on-off device 24 can be set on the outlet pipe 22, the inlet pipe 21 and the communication pipe 23 respectively, or a three-way valve can be used to control the on-off of the outlet pipe 22, the inlet pipe 21 and the communication pipe 23.

[0086] The on-off of the outlet pipe 22, the inlet pipe 21 and the communication pipe 23 is controlled by the on-off device 24, the temperature of the liquid between the pipes is adjusted, the liquid is quickly returned through the communication pipe 23 and the outlet pipe 22 and the inlet pipe 21, so that the temperature of the liquid in the pipe is kept consistent. More specifically, the pipe of the inlet pipe 21 is longer, and the temperature of the liquid changes during transmission, or the temperature of the liquid between the input and output of the battery device 10 changes. Through the control of the on-off device 24, the temperature of the liquid in the pipe can be kept consistent through the quick return of the communication pipe 23. In addition, the temperature of the pipe can be adjusted by the on-off device 24, which can improve the accuracy and reliability of the liquid temperature detection in the pipe.

[0087] Figure 3Fig. 2 shows a structural schematic diagram of another liquid temperature detection device 20 according to an embodiment of the present application, Figure 4 Fig. 1 shows a partial structural schematic diagram of a liquid temperature detection device 20 according to an embodiment of the present application.

[0088] According to some embodiments of the present application, optionally, reference can be continued to Figure 3 and Figure 4 The on-off device 24 includes a first on-off device 241 arranged on the pipeline of the communication pipe 23, a second on-off device 242 arranged on the pipeline of the liquid outlet pipe 22 close to the battery device 10, and a third on-off device 243 arranged on the pipeline of the liquid inlet pipe 21 close to the battery device 10.

[0089] The first on-off device 241 is arranged on the communication pipe 23 and is used to control the on-off of the communication pipe 23. The second on-off device 242 and the third on-off device 243 are arranged on the pipelines of the liquid outlet pipe 22 and the liquid inlet pipe 21 close to the battery device 10, respectively, and are used to control the on-off of the liquid outlet pipe 22 and the liquid inlet pipe 21. For example, by controlling the conduction of the first on-off device 241 and the disconnection of the second on-off device 242 and the third on-off device 243, the liquid in the pipelines can be quickly returned to flow, so that the temperature of the liquid in the pipelines is kept consistent. For another example, during the normal heat management process of the battery device 10, the first on-off device 241 can be controlled to be disconnected, and the second on-off device 242 and the third on-off device 243 can be controlled to be conducted.

[0090] By controlling the on-off of the liquid outlet pipe 22, the liquid inlet pipe 21 and the communication pipe 23 through the three on-off devices 24, the temperature of the liquid between the pipelines can be quickly adjusted, so that the temperature of the liquid in the pipelines of the liquid outlet pipe 22 and the liquid inlet pipe 21 is kept consistent. In addition, by controlling and adjusting the temperature of the pipelines through the three on-off devices 24, the accuracy and reliability of the liquid temperature detection in the pipelines of the liquid outlet pipe 22 and the liquid inlet pipe 21 can be improved.

[0091] Figure 5 Fig. 4 shows a structural schematic diagram of a temperature sensing connecting pipe 25 according to an embodiment of the present application.

[0092] According to some embodiments of the present application, optionally, reference can be continued to Figure 5 The temperature sensing connecting pipe 25 includes a straight pipe 255, a first matching part 256 and a second matching part 257 connected with the pipelines and arranged at two ends of the straight pipe 255, respectively, the pipe diameter of the first matching part 256 and the second matching part 257 gradually increases along the axial direction of the straight pipe, and a temperature sensor arranged on the inner wall of the straight pipe 255 and used to detect the temperature of the liquid flowing through the straight pipe 255.

[0093] As Figure 5As shown, the first fitting part 256 and the second fitting part 257 are trumpet-shaped, expand outward, and are arranged at both ends of the straight pipe 255, for connecting with pipes of multiple diameters and types, wherein the pipe diameter refers to the diameter of the first fitting part 256 and the second fitting part 257.

[0094] Optionally, the temperature sensor can be ring-shaped, i.e., one side of the temperature sensor is ring-shaped and is attached to the inner wall of the straight pipe 255, so that the temperature sensor can be better attached to the inner wall of the straight pipe 255 and more accurately detect the temperature of the liquid in the straight pipe 255.

[0095] Optionally, an information acquisition unit can be arranged on the outer wall of the straight pipe 255, and after the temperature of the liquid is detected by the ring-shaped temperature sensor, the temperature information is transmitted to the information acquisition unit, and the information acquisition unit transmits the temperature information to a terminal for temperature comparison and other data processing.

[0096] By arranging the first fitting part 256 and the second fitting part 257 at both ends of the straight pipe 255, the liquid temperature detection device 20 can be quickly connected with pipes of multiple diameters and types, improving the flexibility of the liquid temperature detection process, and in the case of failure of the ring-shaped temperature sensor, the ring-shaped temperature sensor can be replaced. In addition, the ring-shaped temperature sensor can be better attached to the inner wall of the straight pipe 255, so as to more accurately detect the temperature of the liquid flowing through the straight pipe 255.

[0097] According to some embodiments of the present application, the liquid temperature detection device 20 includes a temperature sensing connection pipe 25 arranged on the pipe, and the temperature sensing connection pipe 25 includes a first temperature sensing connection pipe 251 arranged on the pipe of the liquid inlet pipe 21 close to the battery device 10, for obtaining a first temperature value, and a second temperature sensing connection pipe 252 arranged on the pipe of the liquid inlet pipe 21 close to the liquid cooling unit 30, for obtaining a second temperature value.

[0098] The temperature values include the first temperature value and the second temperature value.

[0099] Optionally, the temperature sensing connection pipe 25 includes: a first temperature sensing connection pipe 251 arranged on the pipe of the liquid inlet pipe 21 close to the battery device 10, for obtaining a first temperature value; a second temperature sensing connection pipe 252 arranged on the pipe of the liquid inlet pipe 21 close to the liquid cooling unit 30, for obtaining a second temperature value; and a third temperature sensing connection pipe 253 arranged on the pipe of the liquid outlet pipe 22 close to the battery device 10, for obtaining a third temperature value. The temperature values also include the third temperature value.

[0100] The plurality of temperature sensing connection pipes 25 are arranged near the battery device 10 and the liquid cooling unit 30, and can be quickly connected with the liquid temperature detection device 20 of various diameters of soft and hard pipes, thereby improving the flexibility of the liquid temperature detection process. In addition, the plurality of temperature sensing connection pipes 25 can detect the temperature of the pipes, thereby more accurately detecting the temperature of the liquid in the pipes, and further improving the accuracy and reliability of the liquid temperature detection in the pipes.

[0101] Optionally, the temperature sensing connection pipe 25 includes a first temperature sensing connection pipe 251 and a second temperature sensing connection pipe 252. The first temperature sensing connection pipe 251 is arranged on the pipe of the liquid inlet pipe 21 near the battery device 10, and is used to obtain a first temperature value. The second temperature sensing connection pipe 252 is arranged on the pipe of the liquid inlet pipe 21 near the liquid cooling unit 30, and is used to obtain a second temperature value. The temperature sensing connection pipe 25 can also be arranged near the battery device 10 of the liquid outlet pipe 22 and the liquid inlet pipe 21, and can be quickly connected with the liquid temperature detection device of various diameters of soft and hard pipes, thereby improving the flexibility of the liquid temperature detection process. In addition, the temperature sensing connection pipe 25 can detect the temperature between the water outlet and the water inlet of the water cooling plate of the battery device 10, thereby more accurately detecting the temperature of the liquid in the pipes, and further improving the accuracy and reliability of the liquid temperature detection in the pipes.

[0102] According to some embodiments of the present application, optionally, in the case that the first temperature value and the second temperature value are different, the first on-off device 241 is used to control the communication pipe 23 to be conductive, the second on-off device 242 is used to control the liquid outlet pipe 22 to be disconnected, and the third on-off device 243 is used to control the liquid inlet pipe 21 to be disconnected; or, in the case that the first temperature value, the second temperature value, the third temperature value and the fourth temperature value are the same, the first on-off device 241 is used to control the communication pipe 23 to be disconnected, the second on-off device 242 is used to control the liquid outlet pipe 22 to be conductive, and the third on-off device 243 is used to control the liquid inlet pipe 21 to be conductive.

[0103] In the case that the first temperature value and the second temperature value are different, i.e., in the case that the liquid in the water cooling plate in the battery device 10 is residual, the communication pipe 23 is controlled to be conductive, the liquid outlet pipe 22 and the liquid inlet pipe 21 are disconnected, and the liquid is backflowed, thereby making the first temperature value and the second temperature value the same.

[0104] Optionally, when the liquid temperature detection device 20 includes three temperature sensing connection pipes 25, which are respectively arranged on the pipe of the liquid inlet pipe 21 near the battery device 10, the pipe of the liquid outlet pipe 22 near the battery device 10, and the pipe of the liquid inlet pipe 21 near the liquid cooling unit 30, in the case that the first temperature value and the second temperature value are different, the second on-off device 242 and the third on-off device 243 are respectively used to control the liquid outlet pipe 22 and the liquid inlet pipe 21 to be disconnected, and the first on-off device 241 is used to control the communication pipe 23 to be connected; in the case that the first temperature value, the second temperature value and the third temperature value are the same, the second on-off device 242 and the third on-off device 243 are used to control the liquid outlet pipe 22 and the liquid inlet pipe 21 to be connected, and the first on-off device 241 is used to control the communication pipe 23 to be disconnected. Liquid can also be quickly returned to keep the temperature of the whole pipe consistent.

[0105] Optionally, when the liquid temperature detection device 20 includes four temperature sensing connection pipes 25, which are respectively arranged on the pipe of the liquid inlet pipe 21 near the battery device 10, the pipe of the liquid inlet pipe 21 near the liquid cooling unit 30, the pipe of the liquid outlet pipe 22 near the battery device 10, and the pipe of the liquid outlet pipe 22 near the liquid cooling unit 30, such as the first temperature sensing connection pipe 251, the second temperature sensing connection pipe 252, the third temperature sensing connection pipe 253 and the first temperature sensing connection pipe 254, in the case that the first temperature value and the second temperature value are different, the second on-off device 242 and the third on-off device 243 are respectively used to control the liquid outlet pipe 22 and the liquid inlet pipe 21 to be disconnected, and the first on-off device 241 is used to control the communication pipe 23 to be connected; in the case that the first temperature value, the second temperature value, the third temperature value and the fourth temperature value are the same, the second on-off device 242 and the third on-off device 243 are used to control the liquid outlet pipe 22 and the liquid inlet pipe 21 to be connected, and the first on-off device 241 is used to control the communication pipe 23 to be disconnected. Liquid can also be quickly returned to keep the temperature of the whole pipe consistent.

[0106] It should be understood that in practice, it is impossible to keep the temperature of the pipes completely consistent or the same, therefore, the difference between the temperatures of the pipes can be kept within a range, for example, the difference between the first temperature value and the second temperature value can be considered as the same if the difference is within 1℃ or 2℃. It should be understood that the range can be set according to actual needs, which is not limited in the present application.

[0107] It should be understood that multiple temperature sensing connection pipes 25 can be arranged in the pipes to detect the temperature, and the on-off device 24 is used to control the pipes to quickly return in the case that the temperatures are different, so that the temperature of the pipes is kept consistent.

[0108] According to some embodiments of the present application, optionally, the temperature sensing connection pipe 25 further includes a third temperature sensing connection pipe 253 arranged on the pipe of the liquid outlet pipe 22 near the battery device 10, which is used to obtain a third temperature value.

[0109] According to some embodiments of the present application, optionally, when the first temperature value and the third temperature value are not the same, the first switching device 241 is used to control the communication pipe 23 to be disconnected, the second switching device 242 is used to control the liquid outlet pipe 22 to be connected, and the third switching device 243 is used to control the liquid inlet pipe 21 to be connected.

[0110] When the first temperature value and the third temperature value are not the same, i.e. there is liquid residue in the pipe of the liquid inlet pipe 21, by controlling the communication pipe 23 to be connected, the liquid outlet pipe 22 and the liquid inlet pipe 21 to be disconnected, the liquid flows back, so that the first temperature value and the third temperature value are the same.

[0111] Optionally, when the liquid temperature detection device 20 comprises three temperature sensing connection pipes 25, which are respectively arranged on the pipe of the liquid inlet pipe 21 close to the battery device 10, the pipe of the liquid inlet pipe 21 close to the liquid cooling unit 30, and the pipe of the liquid outlet pipe 22 close to the battery device 10, when the first temperature value and the third temperature value are not the same, the second switching device 242 and the third switching device 243 are respectively used to control the liquid outlet pipe 22 and the liquid inlet pipe 21 to be connected, and the first switching device 241 is used to control the communication pipe 23 to be disconnected.

[0112] It should be understood that the measurement of the first temperature value and the second temperature value can be performed before the battery device 10 normally works, to detect whether there is liquid residue in the pipe of the liquid inlet pipe 21, and then the measurement of the first temperature value and the third temperature value is performed, to detect whether there is liquid residue in the water-cooled plate pipe of the battery device 10. Alternatively, after the measurement of the first temperature value and the second temperature value, the battery device 10 starts to work for a period of time, and then stops working, and then the first temperature value and the third temperature value are detected, to determine whether there is liquid residue in the water-cooled plate pipe of the battery device 10.

[0113] According to some embodiments of the present application, optionally, the pipe diameter of the first matching part 256 and the second matching part 257 ranges from 20 cm to 40 cm.

[0114] The pipe diameter of the first matching part 256 and the second matching part 257 refers to the maximum diameter. The maximum diameter can be 20 cm, 25 cm, or 40 cm.

[0115] The diameter of the first matching part 256 and the second matching part 257 is set to allow pipes with various diameters to be connected to the temperature sensing connection pipe 25, to detect the temperature in the pipe.

[0116] According to some embodiments of the present application, optionally, the material of the straight pipe 255, the first matching part 256, and the second matching part 257 in the temperature sensing connection pipe 25 is polyvinyl chloride.

[0117] The material of the temperature sensing connecting pipe 25 is polyvinyl chloride, so that the temperature sensing connecting pipe 25 has good flexibility and can be easily bent and matched with different pipes.

[0118] It should be understood that the material of the straight pipe 255, the first matching part 256 and the second matching part 257 in the temperature sensing connecting pipe 25 can also be other soft materials to facilitate the insertion connection with the pipes.

[0119] Figure 6 A structure diagram of a switching device 24 is shown.

[0120] According to some embodiments of the present application, the switching device 24 can be used in the temperature control system 1. Figure 6 The switching device 24 includes a hollow pipe 244 for liquid flow through the pipe, a closure 246 for limiting the liquid flow through the pipe, and a driver 245 arranged between the hollow pipe 244 and the closure 246 and rotating around the axis of the driver 245 to connect the hollow pipe 244 or the closure 246 with the pipe.

[0121] The hollow pipe 244 and the closure 246 can be connected with the pipe respectively by rotating around the driver 245 as the axis to control the switching of the liquid. In the switching process of the hollow pipe 244 and the closure 246, liquid leakage can occur. In order to reduce the liquid leakage, a receiving part is arranged at the lowest end of the switching device 24, which can be connected with the pipe to receive the liquid leaked from the pipe during the driving process.

[0122] Optionally, the receiving part can also be a spherical body for receiving the switching device 24 and being connected with the pipe to reduce the problem of liquid leakage during the switching process.

[0123] It should be understood that the shape of the receiving part can also be circular, and the present application does not make any specific limitation on the shape of the receiving part.

[0124] Optionally, the shape of the closure 246 can be the same as that of the hollow pipe 244, and a baffle can be arranged inside to block the liquid. The closure 246 can also have other shapes as long as it can block the liquid in the pipe, and the present application does not make any limitation on this.

[0125] The switching of the hollow pipe 244 and the closure 246 is driven by the driver 245 in the switching control module, so as to control the switching of the pipe and adjust the temperature of the liquid between the pipes to keep the temperature of the liquid in the pipe consistent. In addition, the temperature of the pipe can be controlled and adjusted by the switching device 24, which can improve the accuracy and reliability of the liquid temperature detection in the pipe.

[0126] According to some embodiments of the present application, the present application further provides an energy storage device, comprising a liquid cooling unit, a battery device, and the liquid temperature detection device according to any one of the preceding embodiments, the liquid temperature detection device being configured to connect the liquid cooling unit and the battery device and adjust the temperature between the liquid cooling unit and the battery device.

[0127] According to some embodiments of the present application, the present application further provides an energy storage system, comprising a power conversion device and the energy storage device according to any one of the preceding embodiments, the power conversion device being configured to electrically connect a power generation device and the energy storage device.

[0128] According to some embodiments of the present application, referring to Figures 2 to 6 , the present application provides a liquid temperature detection device 20, comprising: a liquid inlet pipe 21, one end of the liquid inlet pipe 21 being connected to a liquid outlet of a liquid cooling unit 30, and the other end being connected to a liquid inlet of a battery device 10; a liquid outlet pipe 22, one end of the liquid outlet pipe 22 being connected to a liquid inlet of the liquid cooling unit 30, and the other end being connected to a liquid outlet of the battery device 10; a communication pipe 23 configured to connect the liquid outlet pipe 22 and the liquid inlet pipe 21; a temperature sensing connection pipe 25 configured to be arranged on the liquid inlet pipe 21, the liquid outlet pipe 22, and the communication pipe 23, and configured to obtain a temperature value of the pipes; and an on-off device 24 configured to control the on-off of at least one of the liquid outlet pipe 22, the liquid inlet pipe 21, and the communication pipe 23 according to the temperature value. The on-off of the liquid outlet pipe 22, the liquid inlet pipe 21, and the communication pipe 23 is controlled by the on-off device 24, so as to adjust the temperature of the liquid between the pipes. The temperature of the liquid in the pipes is kept consistent by the rapid backflow through the communication pipe 23. In addition, the temperature of the pipes is adjusted by the on-off device 24, so as to improve the accuracy and reliability of the liquid temperature detection in the pipes.

[0129] Figure 7 A schematic flow chart of a liquid temperature detection method 700 according to an embodiment of the present application is shown.

[0130] According to some embodiments of the present application, as Figure 7 shown, the liquid temperature detection method 700 comprises the following contents:

[0131] S710: obtaining a temperature value, the temperature value being configured to represent the temperature of any one or more of the liquid outlet pipe, the liquid inlet pipe, or the communication pipe.

[0132] S720: controlling the on-off of one or more of the liquid outlet pipe, the liquid inlet pipe, and the communication pipe according to the temperature value.

[0133] The liquid temperature detection method 700 is applied to a liquid temperature detection device. The liquid temperature detection device includes an outlet pipe, an inlet pipe, and a connecting pipe. One end of the inlet pipe is connected to an outlet of a liquid cooling unit, and the other end is connected to an inlet of a battery device. One end of the outlet pipe is connected to an inlet of the liquid cooling unit, and the other end is connected to an outlet of the battery device. The connecting pipe connects the outlet pipe and the inlet pipe. Optionally, the liquid temperature detection device can be the liquid temperature detection device 20.

[0134] Specifically, the execution subject of the method embodiment can be a controller, which can be the on-off device 24 in the above device embodiment. The on-off device is taken as an example for description.

[0135] The on-off device controls the opening and closing of the outlet pipe, the inlet pipe, and the connecting pipe, adjusts the temperature of the liquid between the pipes, and keeps the temperature of the liquid in the pipes consistent. More specifically, the inlet pipe is long, and the temperature of the liquid changes during transmission. The temperature of the liquid between the input port and the output port of the battery device also changes. The on-off device controls the temperature of the pipes to keep the temperature of the liquid in the pipes consistent. In addition, the on-off device controls and adjusts the temperature of the pipes to improve the accuracy and reliability of the liquid temperature detection in the pipes.

[0136] It should be understood that the temperature value can be measured by a temperature sensor in the pipe and sent to the on-off device, or obtained by other means. The application does not make any limitation on this.

[0137] It should also be understood that the above S710 and S720 do not have a sequence. For example, the on-off device can control the opening and closing of the outlet pipe, the inlet pipe, and the connecting pipe according to the temperature value obtained from experience. The on-off device can also obtain the temperature value first and then control the opening and closing of the outlet pipe, the inlet pipe, and the connecting pipe according to the temperature value. The application does not make any limitation on this.

[0138] According to some embodiments of the application, the temperature value includes a first temperature value, a second temperature value, and a third temperature value. The first temperature value represents the temperature of the inlet pipe close to the battery device. The second temperature value represents the temperature of the inlet pipe close to the liquid cooling unit. The third temperature value represents the temperature of the outlet pipe close to the battery device. One end of the inlet pipe is connected to the outlet of the liquid cooling unit, and the other end is connected to the inlet of the battery device. One end of the outlet pipe is connected to the inlet of the liquid cooling unit, and the other end is connected to the outlet of the battery device.

[0139] Figure 8 Another liquid temperature detection method two 800 provided by the embodiments of the application is shown in the schematic flowchart.

[0140] According to some embodiments of the application, as shown in Figure 8 The liquid temperature detection method two 800 includes the following contents.

[0141] S810: in response to the test preparation instruction.

[0142] S820: according to the test preparation instruction, acquiring the first temperature value and the second temperature value, and / or acquiring the first temperature value and the third temperature value.

[0143] S830: in the case that the first temperature value and the second temperature value are the same, and / or in the case that the first temperature value and the third temperature value are the same, confirming that the test preparation is completed.

[0144] Specifically, the execution subject of the method embodiment can be a controller, which can be the on-off device 24 in the above-mentioned device embodiment. Hereinafter, the on-off device is taken as an example for description.

[0145] In the above-mentioned S820, in the test preparation stage, the on-off device can acquire the temperature values at both ends of the liquid inlet pipe or the battery device, and judge whether there is liquid accumulation at both ends of the liquid inlet pipe or the battery device according to the temperature values, so as to exclude the liquid accumulation and be more conducive to subsequent tests.

[0146] It should be understood that part of the content in the method embodiment is the same as that in the device embodiment, and can be referred to the device embodiment. Herein, the method embodiment in the present application will not be described again.

[0147] Optionally, after the on-off device responds to the test preparation instruction, a fourth temperature value can also be acquired, which is used to represent the temperature of the liquid outlet pipe close to the liquid cooling unit. The on-off device can acquire the first temperature value and the second temperature value, and / or acquire the first temperature value and the third temperature value, and / or acquire the third temperature value and the fourth temperature value according to the test preparation instruction. In the case that the first temperature value and the second temperature value are the same, and / or in the case that the first temperature value and the third temperature value are the same, and / or in the case that the third temperature value and the fourth temperature value are the same, and / or in the case that the first temperature value, the second temperature value, the third temperature value and the fourth temperature value are the same, the on-off device confirms that the test preparation is completed.

[0148] Optionally, in the test preparation stage, the backflow can be used to exclude the liquid accumulation by conducting the communication pipe, the liquid inlet pipe and the liquid outlet pipe, or only the communication pipe can be conducted to exclude the liquid accumulation, or only the liquid inlet pipe and the liquid outlet pipe can be conducted to exclude the liquid accumulation. It should be understood that the liquid accumulation can be excluded efficiently and quickly by conducting only the communication pipe.

[0149] In the embodiment of the present application, after the test preparation instruction is acquired, the first temperature value and the second temperature value are acquired, aiming to detect the temperature at both ends of the liquid inlet pipe to remove the liquid accumulation. After the liquid accumulation is removed, if the first temperature and the second temperature are the same, it is confirmed that the test preparation is completed. Similarly, the first temperature value and the third temperature value are acquired, aiming to detect the temperature at both ends of the battery device to remove the liquid accumulation in the battery device, so that the liquid temperature detection process is more accurate.

[0150] Figure 9 A schematic flowchart of another liquid temperature detection method three 900 provided by the embodiment of the present application is shown.

[0151] According to some embodiments of the present application, as shown in Figure 9 The liquid temperature detection method three 900 includes the following contents:

[0152] S910: responding to a test instruction.

[0153] S920: acquiring a first temperature value and a second temperature value according to the test instruction.

[0154] Specifically, the execution subject of the method embodiment can be a controller, which can be the on-off device 24 in the above-mentioned device embodiment. The on-off device is taken as an example for description below.

[0155] In the formal test stage, because the liquid inlet pipe is relatively long, the temperature at both ends of the liquid inlet pipe may not be consistent during the liquid flow. Therefore, after the on-off device responds to the test instruction, the temperature values at both ends of the liquid inlet pipe can be acquired according to the test instruction.

[0156] According to some embodiments of the present application, optionally, according to the temperature values, the on-off of one or more of the liquid outlet pipe, the liquid inlet pipe and the communication pipe is controlled, including: in the case that the first temperature value and the second temperature value are not the same, the liquid outlet pipe and the liquid inlet pipe are controlled to be disconnected, and the communication pipe is controlled to be connected; or in the case that the first temperature value and the second temperature value are the same, the liquid outlet pipe and the liquid inlet pipe are controlled to be connected, and the communication pipe is controlled to be disconnected.

[0157] Optionally, in the test process, the on-off device can also acquire a third temperature value and a fourth temperature value. In the case that the third temperature value and the fourth temperature value are not the same, the on-off device controls the communication pipe to be connected, and the liquid inlet pipe and the liquid outlet pipe to be disconnected, so as to perform backflow, so that the temperature at both ends of the liquid outlet pipe is consistent.

[0158] In the embodiment of the present application, in the case that the temperature at both ends of the liquid inlet pipe is not the same due to the problem of being too long and the like during the test, the liquid outlet pipe and the liquid inlet pipe are controlled to be disconnected, and the communication pipe is controlled to be connected, so as to make the liquid flow back through the communication pipe quickly, and make the temperature at both ends of the liquid inlet pipe consistent.

[0159] Figure 10 A schematic flowchart of another liquid temperature detection method four 1000 provided by embodiments of the present application is shown.

[0160] According to some embodiments of the present application, as shown in Figure 10 The liquid temperature detection method four 1000 includes the following contents:

[0161] S1010: in response to a test pause instruction.

[0162] S1020: according to the test pause instruction, obtaining a first temperature value and a third temperature value.

[0163] Specifically, the execution subject of the method embodiment can be a controller, which can be the on-off device 24 in the above-mentioned device embodiment. The on-off device is taken as an example for description below.

[0164] In the process of test pause in the embodiments of the present application, it is necessary to detect whether the temperature values on both sides of the battery device are the same, i.e. it is possible that residual liquid in the water-cooled plate in the battery device is discharged from the liquid outlet pipe during the pause, so that the temperatures on both sides of the battery device are inconsistent. Therefore, in the process of test pause, the temperatures on both sides of the battery device are obtained to make the test process more accurate.

[0165] According to some embodiments of the present application, optionally, according to the temperature values, the on-off of one or more of the liquid outlet pipe, the liquid inlet pipe and the communication pipe is controlled, including: in the case that the first temperature value and the third temperature value are not the same, controlling the liquid outlet pipe and the liquid inlet pipe to be on, and controlling the communication pipe to be off.

[0166] It should be understood that in the above-mentioned method embodiments, the on-off device can obtain the fourth temperature value. Any one or more of the first temperature value, the second temperature value, the third temperature value and the fourth temperature value can be used to control the on-off of the liquid inlet pipe, the liquid outlet pipe and the communication pipe by the on-off device.

[0167] Optionally, in the process of test pause, the on-off device can also obtain the third temperature value and the fourth temperature value. In the case that the third temperature value and the fourth temperature value are not the same, the on-off device controls the communication pipe to be on, and the liquid inlet pipe and the liquid outlet pipe to be off, to perform backflow, so that the temperatures on both ends of the liquid outlet pipe are consistent.

[0168] According to some embodiments of the present application, a chip is also provided, including: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip performs the liquid temperature detection method as described in any of the above solutions.

[0169] According to some embodiments of the present application, the present application also provides a computer readable storage medium, comprising: a computer program stored in the computer readable storage medium, when the computer program is run on a computer, the computer program causes the computer to perform the liquid temperature detection method according to any one of the preceding embodiments.

[0170] According to some embodiments of the present application, the present application also provides a computer program product, the computer program product comprising instructions for performing the liquid temperature detection method according to any one of the preceding embodiments.

[0171] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A liquid temperature detecting device characterized by comprising: The application relates to a temperature sensing device for a battery device, comprising: a liquid inlet pipe, one end of which is connected with a liquid outlet of a liquid cooling unit, and the other end of which is connected with a liquid inlet of the battery device; a liquid outlet pipe, one end of which is connected with a liquid inlet of the liquid cooling unit, and the other end of which is connected with a liquid outlet of the battery device; a communication pipe for connecting the liquid outlet pipe and the liquid inlet pipe; a temperature sensing connecting pipe arranged on the pipes of the liquid inlet pipe, the liquid outlet pipe and the communication pipe, and used for obtaining temperature values of the pipes; an on-off device, comprising a first on-off device, a second on-off device and a third on-off device, and used for controlling the on-off of at least one of the liquid inlet pipe, the liquid outlet pipe and the communication pipe according to the temperature values; wherein the temperature sensing connecting pipe comprises: a straight pipe used for liquid flow; a first matching part and a second matching part connected with the pipes, and arranged at two ends of the straight pipe respectively, and the pipe diameters of the first matching part and the second matching part gradually increase in the axial direction of the straight pipe; the temperature sensing connecting pipe further comprises: a first temperature sensing connecting pipe arranged on the pipe of the liquid inlet pipe close to the battery device, and used for obtaining a first temperature value; a second temperature sensing connecting pipe arranged on the pipe of the liquid inlet pipe close to the liquid cooling unit, and used for obtaining a second temperature value; a third temperature sensing connecting pipe arranged on the pipe of the liquid outlet pipe close to the battery device, and used for obtaining a third temperature value; in the case that the first temperature value and the second temperature value are different, the first on-off device is used for controlling the communication pipe to be on, the second on-off device is used for controlling the liquid outlet pipe to be off, and the third on-off device is used for controlling the liquid inlet pipe to be off; or in the case that the first temperature value and the second temperature value are the same, the first on-off device is used for controlling the communication pipe to be off, the second on-off device is used for controlling the liquid outlet pipe to be on, and the third on-off device is used for controlling the liquid inlet pipe to be on; in the case that the first temperature value and the third temperature value are different, the first on-off device is used for controlling the communication pipe to be off, the second on-off device is used for controlling the liquid outlet pipe to be on, and the third on-off device is used for controlling the liquid inlet pipe to be on.

2. The liquid temperature detecting device according to claim 1, wherein the first on-off device is arranged on the pipe of the communication pipe; the second on-off device is arranged on the pipe of the liquid outlet pipe close to the battery device; the third on-off device is arranged on the pipe of the liquid inlet pipe close to the battery device.

3. The liquid temperature detecting device according to claim 1, wherein the temperature sensing connecting pipe further comprises: a temperature sensor arranged on the inner wall of the straight pipe, and used for detecting the temperature of the liquid flowing through the straight pipe.

4. The liquid temperature detecting device according to claim 3, wherein the materials of the straight pipe, the first matching part and the second matching part in the temperature sensing connecting pipe are polyvinyl chloride.

5. The liquid temperature detecting device according to any one of claims 1 to 4, characterized by the on-off device comprises: a hollow pipe used for liquid flow through the pipe; a closure used for limiting the liquid flow through the pipe; a driver arranged between the hollow pipe and the closure, and rotating around the axis of the driver to make the hollow pipe or the closure connected with the pipe.

6. A liquid temperature detecting method characterized by comprising: the application further relates to a temperature sensing device for a battery device, comprising: obtaining temperature values, the temperature values being used for representing the temperature of any one or more of the liquid inlet pipe, the liquid outlet pipe or the communication pipe. According to the temperature value, the on-off of one or more of the liquid outlet pipe, the liquid inlet pipe and the communication pipe is controlled; The temperature value includes: In response to a test preparation instruction; According to the test preparation instruction, the first temperature value and the second temperature value are obtained, and / or the first temperature value and the third temperature value are obtained; In the case that the first temperature value and the second temperature value are the same, and / or in the case that the first temperature value and the third temperature value are the same, it is confirmed that the test preparation is completed; The temperature value includes a first temperature value, a second temperature value and a third temperature value, the first temperature value is used to represent the temperature of the liquid inlet pipe close to the battery device, the second temperature value is used to represent the temperature of the liquid inlet pipe close to the liquid cooling unit, and the third temperature value is used to represent the temperature of the liquid outlet pipe close to the battery device, One end of the liquid inlet pipe is connected to the liquid outlet of the liquid cooling unit, and the other end is connected to the liquid inlet of the battery device. One end of the liquid outlet pipe is connected to the liquid inlet of the liquid cooling unit, and the other end is connected to the liquid outlet of the battery device. According to the temperature value, the on-off of one or more of the liquid outlet pipe, the liquid inlet pipe and the communication pipe is controlled, including: In the case that the first temperature value and the third temperature value are not the same, the liquid outlet pipe and the liquid inlet pipe are controlled to be on, and the communication pipe is controlled to be off.

7. The liquid temperature detecting method according to claim 6, wherein The temperature value includes: In response to a test instruction; According to the test instruction, the first temperature value and the second temperature value are obtained.

8. The liquid temperature detecting method according to claim 7, wherein According to the temperature value, the on-off of one or more of the liquid outlet pipe, the liquid inlet pipe and the communication pipe is controlled, including: In the case that the first temperature value and the second temperature value are not the same, the liquid outlet pipe and the liquid inlet pipe are controlled to be off, and the communication pipe is controlled to be on; or, In the case that the first temperature value and the second temperature value are the same, the liquid outlet pipe and the liquid inlet pipe are controlled to be on, and the communication pipe is controlled to be off.

9. The liquid temperature detecting method according to claim 6, wherein The temperature value includes: In response to a test pause instruction; According to the test pause instruction, the first temperature value and the third temperature value are obtained.

10. A chip, characterized by Including: The processor is used to call and run the computer program from the memory, so that the device installed with the chip executes the liquid temperature detection method as claimed in any one of claims 6 to 9.

11. A computer readable storage medium, characterized in that, Including: The computer program is stored on the computer readable storage medium, and when the computer program runs on the computer, the computer executes the liquid temperature detection method as claimed in any one of claims 6 to 9.

12. A computer program product, characterised in that, The computer program product includes a computer program product for executing the liquid temperature detection method as claimed in any one of claims 6 to 9.

13. An energy storage device, characterized by, Including a liquid cooling unit, a battery device and a liquid temperature detection device as claimed in any one of claims 1 to 5, the liquid temperature detection device is used to communicate the liquid cooling unit and the battery device, and adjust the temperature between the liquid cooling unit and the battery device.

14. An energy storage system characterized by, Including a power conversion device and a storage device as claimed in claim 13, the power conversion device is used to electrically connect a power generation device and the storage device.

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