Liquid leakage detection assembly and energy storage equipment

Abstract

The utility model provides a liquid leakage detection assembly and an energy storage device, relates to the technical field of liquid leakage detection of the energy storage device, and aims to at least solve the problems that a liquid leakage detection line is difficult to wire and the quantity demanded of the liquid leakage detection line is large. The liquid leakage detection assembly comprises a signal collector; the first connector is embedded in the battery pack, the first connector comprises a first end located in the battery pack and a second end located outside the battery pack, and the second end of the first connector is connected with the signal collector; the first liquid leakage sensor is arranged in the battery pack and is connected with the first end of the first connector; wherein when the electrolyte in the battery pack leaks, the first leakage inductor can generate a first induction signal after being in contact with the electrolyte, and sends the first induction signal to the signal collector. According to the battery pack, the first liquid leakage sensor in the battery pack and the signal collector outside the battery pack are connected through the first connector, so that the sealing performance of the battery pack is better compared with a mode of arranging an avoiding hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid leakage detection of energy storage devices, in particular to a liquid leakage detection assembly and an energy storage device. BACKGROUND

[0002] Currently, when detecting whether liquid leakage occurs in a battery pack, a commonly used method is to set a liquid leakage detection line in the battery pack, and then connect the liquid leakage detection line with a signal collector outside the battery pack. In this way, when liquid leakage occurs, the liquid leakage detection line can transmit a signal to the signal collector, thereby achieving liquid leakage detection. However, this method has the following disadvantages: a hole needs to be punched on the shell of the battery pack to avoid the liquid leakage detection line, which results in low sealing performance of the battery pack. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve the problems of the prior art or related art, i.e., the liquid leakage detection line is difficult to wire, and a large amount of liquid leakage detection lines are required.

[0004] To this end, a first aspect of the present application provides a liquid leakage detection assembly.

[0005] A second aspect of the present application provides an energy storage device.

[0006] Embodiments of the first aspect of the present application provide a liquid leakage detection assembly applied to an energy storage device. The energy storage device includes a battery pack. The liquid leakage detection assembly includes a signal collector, a first connector embedded on the battery pack, and a first liquid leakage sensor. The first connector includes a first end located in the battery pack and a second end located outside the battery pack. The second end of the first connector is connected to the signal collector. The first liquid leakage sensor is arranged in the battery pack and connected to the first end of the first connector. When electrolyte in the battery pack leaks, the first liquid leakage sensor can generate a first sensing signal after contacting the electrolyte and send the first sensing signal to the signal collector.

[0007] The liquid leakage detection assembly provided by the embodiments is applied to an energy storage device. The energy storage device includes a battery pack. The liquid leakage detection assembly includes a signal collector, a first connector, and a first liquid leakage sensor. The first connector is embedded on the battery pack. The first connector includes a first end located in the battery pack and a second end located outside the battery pack. The second end of the first connector is connected to the signal collector. The first liquid leakage sensor is arranged in the battery pack and connected to the first end of the first connector. When electrolyte in the battery pack leaks, the first liquid leakage sensor can generate a first sensing signal after contacting the electrolyte and send the first sensing signal to the signal collector, thereby determining the occurrence of liquid leakage.

[0008] The first liquid leakage sensor can be a liquid leakage sensing line, such as a resistance change type sensing line. When the electrolyte in the battery pack leaks, the resistance of the first liquid leakage sensing line changes after the first liquid leakage sensing line contacts the electrolyte, thereby sending a resistance change signal to the signal collector. The signal collector can determine whether the battery pack leaks according to the change in the resistance of the first liquid leakage sensor. Of course, the first liquid leakage sensor can also be a capacitance change type sensing line, an optical or chemical reaction type sensing line. When the electrolyte in the battery pack leaks, the capacitance or color of the first liquid leakage sensing line changes, and the sensing signal can also be sent to the signal collector. The signal collector can determine whether the battery pack leaks according to the change in the capacitance or color of the first liquid leakage sensor.

[0009] In addition, the first connector is used to connect the first liquid leakage sensor inside the battery pack and the signal collector outside the battery pack, so that the sealing of the battery pack is better than the method of setting the avoiding hole.

[0010] In some embodiments, optionally, the liquid leakage detection assembly further comprises a first conductor connected between the signal collector and the second end of the first connector.

[0011] In this embodiment, the first conductor is connected between the signal collector and the second end of the first connector, that is, only part of the battery pack is provided with the liquid leakage sensing line, and the remaining part is connected through the first conductor, so that the problem of large demand for liquid leakage detection lines is overcome. The first conductor can be a copper conductor.

[0012] In some embodiments, optionally, the battery pack is multiple, and the number of battery packs, first liquid leakage sensors and first connectors is the same. Each battery pack is provided with a first liquid leakage sensor, and each first liquid leakage sensor is connected to the signal collector through a first connector.

[0013] In this embodiment, the battery pack is multiple, and the number of battery packs, first liquid leakage sensors and first connectors is the same. Each battery pack is provided with a first liquid leakage sensor, and each first liquid leakage sensor is connected to the signal collector through a first connector. In this way, the detection of multiple battery packs can be realized.

[0014] In some embodiments, optionally, the liquid leakage detection assembly further comprises: a conductive support installed in the energy storage device, the first conductor being connected between the first connector and the conductive support; and a second conductor connected between the signal collector and the conductive support.

[0015] In this embodiment, the liquid leakage detection assembly further comprises a conductive support and a second conductor, the conductive support is installed in the energy storage device, the first conductor is connected between the second end of the first connector and the conductive support; the second conductor is connected between the signal collector and the conductive support. By arranging the conductive support, the wiring of the plurality of first liquid leakage sensors and the first conductor is more convenient, and the conductive support can support the first conductors to a certain extent. In addition, the detection of all battery packs is connected to the same port of the signal collector through the second conductor, realizing the effect of "multi-area, common port" detection.

[0016] In some embodiments, optionally, the number of battery packs, first liquid leakage sensors, first connectors and first conductors is greater than or equal to 5 and less than or equal to 10.

[0017] In this embodiment, the number of battery packs, first liquid leakage sensors, first connectors and first conductors is greater than or equal to 5 and less than or equal to 10. For example, it can be 5, 8 or 10.

[0018] In some embodiments, optionally, the conductive support is a T-shaped conductive support.

[0019] In some embodiments, optionally, the first liquid leakage sensor comprises a first liquid leakage sensing line, which can be a resistance change type sensing line, a capacitance change type sensing line, an optical or chemical reaction type sensing line.

[0020] In some embodiments, optionally, the first conductor comprises a first copper conductor. Metal copper has good conductivity, thereby improving the signal transmission efficiency.

[0021] In some embodiments, optionally, the first liquid leakage sensor is welded to the first connector, which can improve the connection strength of the first liquid leakage sensor and the first connector, ensure stable connection of the two, and improve the signal transmission efficiency.

[0022] In some embodiments, optionally, the battery pack comprises a battery module and a shell, the shell comprises a bottom plate, a top plate and a surrounding plate, the surrounding plate is arranged between the bottom plate and the top plate, the bottom plate is arranged at the bottom of the battery module, the first liquid leakage sensor is arranged on the bottom plate, and the first connector is embedded on the surrounding plate.

[0023] In this embodiment, the battery pack comprises a battery module and a shell, the shell comprises a bottom plate, a top plate and a surrounding plate, the bottom plate is arranged at the bottom of the battery module, the first liquid leakage sensor is arranged on the bottom plate, and the first connector is embedded on the surrounding plate. Since the electrolyte usually leaks onto the bottom plate of the battery pack when it leaks, the first liquid leakage sensor is arranged on the bottom plate to detect the bottom plate and determine whether the battery pack leaks.

[0024] In some embodiments, optionally, the energy storage device further comprises a liquid cooling pipe connected with the shell, and the liquid leakage detection component further comprises: a second liquid leakage sensor installed on an outer wall surface of the liquid cooling pipe, and the second liquid leakage sensor is connected between the second end of the first connector and the signal collector; wherein when the cooling liquid in the liquid cooling pipe leaks and flows onto the outer wall surface of the liquid cooling pipe, the second liquid leakage sensor can generate a second sensing signal and send the second sensing signal to the signal collector.

[0025] In this embodiment, the energy storage device further comprises a liquid cooling pipe connected with the shell, and the liquid cooling pipe is used to cool the shell of the battery pack to release the heat inside the battery pack, and the liquid leakage detection component further comprises a second liquid leakage sensor installed on an outer wall surface of the liquid cooling pipe, and the second liquid leakage sensor is connected between the second end of the first connector and the signal collector, so that when the cooling liquid in the liquid cooling pipe leaks and flows onto the outer wall surface of the liquid cooling pipe, the second liquid leakage sensor can generate a second sensing signal, and the second sensing signal can also be a signal of a change in resistance, capacitance or color, so as to send the second sensing signal to the signal collector to determine whether the liquid cooling pipe has leaked.

[0026] In some embodiments, optionally, the energy storage device comprises an energy storage cabinet, and the battery pack is arranged in the energy storage cabinet, the energy storage cabinet comprises a bottom cabinet, a top cabinet and a side cabinet located between the bottom cabinet and the top cabinet, and the liquid leakage detection component further comprises: a third liquid leakage sensor installed on the bottom cabinet, and the third liquid leakage sensor is connected between the first conductor and the signal collector; wherein when there is a leaking liquid on the bottom cabinet, the third liquid leakage sensor can generate a third sensing signal and send the third sensing signal to the signal collector.

[0027] In this embodiment, the bottom of the energy storage cabinet is also prone to liquid leakage, so the third liquid leakage sensor is installed on the bottom cabinet to detect the liquid leakage of the bottom of the energy storage cabinet.

[0028] In some embodiments, optionally, the liquid leakage detection component further comprises: a second connector connected between the first conductor and the third liquid leakage sensor; and a third connector connected between the third liquid leakage sensor and the signal collector.

[0029] In this embodiment, the first conductor, the third liquid leakage sensor and the signal collector are connected through the second connector and the third connector, and the connection effect and the signal transmission efficiency are better.

[0030] The second aspect of the utility model provides a kind of energy storage device, comprising: the liquid leakage detection component of any one of the first aspect of application.

[0031] The energy storage device provided by the utility model has the liquid leakage detection assembly of any one of the first aspect of the utility model, and therefore has all the beneficial effects of the liquid leakage detection assembly of any one of the first aspect of the utility model.

[0032] Additional aspects and advantages of the application will be set forth in the description that follows, and in part will be obvious from the description, or can be learned by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0034] Figure 1 The structure diagram of the liquid leakage detection assembly of one embodiment of the utility model is shown;

[0035] Figure 2 The structure diagram of the energy storage device of one embodiment of the utility model is shown.

[0036] Figure 1 And Figure 2 The correspondence between the reference signs and the component names in the drawings is as follows:

[0037] 1 liquid leakage detection assembly, 11 signal collector, 12 first connector, 122 first socket, 124 first plug, 126 first end, 128 second end, 13 first liquid leakage sensor, 14 first conductor, 15 conductive support, 162 second conductor, 164 third conductor, 17 liquid cooling pipe, 182 second liquid leakage sensor, 184 third liquid leakage sensor, 192 second connector, 1922 second socket, 1924 second plug, 194 third connector, 1942 third socket, 1944 third plug, 2 energy storage device, 22 battery pack, 222 battery module, 224 shell, 2242 bottom plate, 2244 top plate, 2246 surrounding plate, 24 energy storage cabinet, 242 bottom cabinet, 244 top cabinet, 246 side cabinet. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned purposes, features and advantages of the application, the application will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0039] In the following description, many specific details are set forth in order to provide a thorough understanding of the application, but the application can also be practiced in other ways different from those described herein, and therefore, the scope of protection of the application is not limited by the specific embodiments disclosed below.

[0040] As Figure 1 And Figure 2As shown, the embodiment of the first aspect of the present application provides a liquid leakage detection assembly 1 applied to an energy storage device 2, the energy storage device 2 comprising a battery pack 22, the liquid leakage detection assembly 1 comprising a signal collector 11, a first connector 12 embedded on the battery pack 22, the first connector 12 comprising a first end 126 located inside the battery pack 22 and a second end 128 located outside the battery pack 22, the second end 128 of the first connector 12 being connected with the signal collector 11; a first liquid leakage sensor 13 arranged inside the battery pack 22 and connected with the first end 126 of the first connector 12; wherein when the electrolyte inside the battery pack 22 leaks, the first liquid leakage sensor 13 can generate a first sensing signal after being in contact with the electrolyte and send the first sensing signal to the signal collector 11.

[0041] The liquid leakage detection assembly 1 provided by the embodiment is applied to the energy storage device 2, the energy storage device 2 comprising the battery pack 22, the liquid leakage detection assembly 1 comprising the signal collector 11, the first connector 12 and the first liquid leakage sensor 13, the first connector 12 being embedded on the battery pack 22, the first connector 12 comprising the first end 126 located inside the battery pack 22 and the second end 128 located outside the battery pack 22, the second end 128 of the first connector 12 being connected with the signal collector 11; the first liquid leakage sensor 13 being arranged inside the battery pack 22 and connected with the first end 126 of the first connector 12, when the electrolyte inside the battery pack 22 leaks, the first liquid leakage sensor 13 can generate a first sensing signal after being in contact with the electrolyte and send the first sensing signal to the signal collector 11, so as to determine the occurrence of the liquid leakage.

[0042] The first liquid leakage sensor 13 can be a liquid leakage sensing line, for example, a resistance change type sensing line, so that when the electrolyte inside the battery pack 22 leaks, the resistance of the first liquid leakage sensing line can change after being in contact with the electrolyte, thereby sending the resistance change signal to the signal collector 11, and the signal collector 11 can determine whether the battery pack 22 leaks according to the change of the resistance of the first liquid leakage sensor 13. Of course, the first liquid leakage sensor 13 can also be a capacitance change type sensing line, an optical or chemical reaction type sensing line, so that when the electrolyte inside the battery pack 22 leaks, the first liquid leakage sensing line can change in capacitance or color, and the sensing signal can also be sent to the signal collector 11, and the signal collector 11 can determine whether the battery pack 22 leaks according to the change of the capacitance or color of the first liquid leakage sensor 13.

[0043] In addition, the first connector 12 is used to connect the first liquid leakage sensor 13 inside the battery pack 22 and the signal collector 11 outside the battery pack 22, so that the sealing of the battery pack 22 is better than the way of setting the avoiding hole.

[0044] In some embodiments, the first connector 12 comprises a first socket 122 and a first plug 124.

[0045] In some embodiments, the liquid leakage detection assembly 1 further comprises a first conductor 14 connected between the signal collector 11 and the second end 128 of the first connector 12.

[0046] In this embodiment, the first conductor 14 is connected between the signal collector 11 and the second end 128 of the first connector 12, that is, only the part inside the battery pack 22 is provided with the liquid leakage sensing line, and the remaining part is connected through the first conductor 14, so that the problem of large demand for the liquid leakage detection line is overcome. The first conductor 14 can be a copper conductor.

[0047] In some embodiments, the battery pack 22 is multiple, and the number of the battery pack 22, the first liquid leakage sensor 13 and the first connector 12 is the same, and each battery pack 22 is provided with a first liquid leakage sensor 13, and each first liquid leakage sensor 13 is connected with the signal collector 11 through a first connector 12.

[0048] In this embodiment, the battery pack 22 is multiple, and the number of the battery pack 22, the first liquid leakage sensor 13 and the first connector 12 is the same, and each battery pack 22 is provided with a first liquid leakage sensor 13, and each first liquid leakage sensor 13 is connected with the signal collector 11 through a first connector 12, so that the detection of multiple battery packs 22 can be realized.

[0049] In some embodiments, the liquid leakage detection assembly 1 further comprises a conductive bracket 15 installed in the energy storage device 2, and the first conductor 14 is connected between the first connector 12 and the conductive bracket 15; and a second conductor 162 is connected between the signal collector 11 and the conductive bracket 15.

[0050] In this embodiment, the liquid leakage detection assembly 1 further comprises a conductive bracket 15 and a second conductor 162, the conductive bracket 15 is installed in the energy storage device 2, and the first conductor 14 is connected between the second end 128 of the first connector 12 and the conductive bracket 15; and the second conductor 162 is connected between the signal collector 11 and the conductive bracket 15. By providing the conductive bracket 15, the wiring of the multiple first liquid leakage sensors 13 and the first conductors 14 is more convenient, and the conductive bracket 15 can support the first conductors 14 to a certain extent. In addition, the detection of all battery packs 22 is connected to the same port of the signal collector 11 through the second conductor 162, so that the effect of "multi-area, common port" detection is realized.

[0051] In some embodiments, optionally, the number of battery packs 22, first liquid leakage sensors 13, first connectors 12 and first conductors 14 is greater than or equal to 5 and less than or equal to 10.

[0052] In this embodiment, the number of battery packs 22, first liquid leakage sensors 13, first connectors 12 and first conductors 14 is greater than or equal to 5 and less than or equal to 10. For example, it can be 5, 8 or 10.

[0053] In some embodiments, optionally, the conductive bracket 15 is a T-shaped conductive bracket.

[0054] In some embodiments, optionally, the first liquid leakage sensor 13 comprises a first liquid leakage sensing line, which can be a resistance change type sensing line, a capacitance change type sensing line, an optical or chemical reaction type sensing line.

[0055] In some embodiments, optionally, the first conductor 14 comprises a first copper conductor. Metal copper has good conductivity, thereby improving signal transmission efficiency.

[0056] In some embodiments, optionally, the first liquid leakage sensor 13 is welded to the first connector 12. In this way, the connection strength of the first liquid leakage sensor 13 and the first connector 12 can be improved, the stable connection of the two can be ensured, and the signal transmission efficiency can be improved.

[0057] In some embodiments, optionally, the battery pack 22 comprises a battery module 222 and a shell 224. The shell 224 comprises a bottom plate 2242, a top plate 2244 and a surrounding plate 2246. The surrounding plate 2246 is arranged between the bottom plate 2242 and the top plate 2244. The bottom plate 2242 is arranged at the bottom of the battery module 222. The first liquid leakage sensor 13 is arranged on the bottom plate 2242. The first connector 12 is embedded on the surrounding plate 2246.

[0058] In this embodiment, the battery pack 22 comprises a battery module 222 and a shell 224. The shell 224 comprises a bottom plate 2242, a top plate 2244 and a surrounding plate 2246. The bottom plate 2242 is arranged at the bottom of the battery module 222. The first liquid leakage sensor 13 is arranged on the bottom plate 2242. The first connector 12 is embedded on the surrounding plate 2246. Since the electrolyte usually leaks onto the bottom plate 2242 of the battery pack 22 when it leaks, the first liquid leakage sensor 13 is arranged on the bottom plate 2242 to detect the bottom plate 2242, thereby determining whether the battery pack 22 leaks.

[0059] In some embodiments, the energy storage device 2 optionally further comprises a liquid cooling pipe 17 connected with the shell 224, and the liquid leakage detection assembly 1 further comprises a second liquid leakage sensor 182 mounted on the outer wall surface of the liquid cooling pipe 17 and connected between the second end 128 of the first connector 12 and the signal collector 11; wherein when the cooling liquid in the liquid cooling pipe 17 leaks and flows onto the outer wall surface of the liquid cooling pipe 17, the second liquid leakage sensor 182 can generate a second sensing signal and send the second sensing signal to the signal collector 11.

[0060] In this embodiment, the energy storage device 2 further comprises a liquid cooling pipe 17 connected with the shell 224 for cooling the shell 224 of the battery pack 22 to release the heat inside the battery pack 22, and the liquid leakage detection assembly 1 further comprises a second liquid leakage sensor 182 mounted on the outer wall surface of the liquid cooling pipe 17, for example, wound on the outer wall surface of the liquid cooling pipe 17 or mounted on the outer wall surface of the liquid cooling pipe 17, and the second liquid leakage sensor 182 is connected between the second end 128 of the first connector 12 and the signal collector 11, so that when the cooling liquid in the liquid cooling pipe 17 leaks and flows onto the outer wall surface of the liquid cooling pipe 17, the second liquid leakage sensor 182 can generate a second sensing signal, which can also be a signal of resistance, capacitance or color change, and send the second sensing signal to the signal collector 11 to determine whether the liquid cooling pipe 17 has leaked.

[0061] In some embodiments, the energy storage device 2 optionally comprises an energy storage cabinet 24 in which the battery pack 22 is arranged, and the energy storage cabinet 24 comprises a bottom cabinet 242, a top cabinet 244 and a side cabinet 246 between the bottom cabinet 242 and the top cabinet 244, and the liquid leakage detection assembly 1 further comprises a third liquid leakage sensor 184 mounted on the bottom cabinet 242 and connected between the first conductor 14 and the signal collector 11; wherein when there is a leaking liquid on the bottom cabinet 242, the third liquid leakage sensor 184 can generate a third sensing signal and send the third sensing signal to the signal collector 11.

[0062] In this embodiment, the bottom of the energy storage cabinet 24 is also prone to liquid leakage, so the third liquid leakage sensor 184 is mounted on the bottom cabinet 242 to detect the liquid leakage at the bottom of the energy storage cabinet 24.

[0063] In some embodiments, the liquid leakage detection assembly 1 optionally further comprises a second connector 192 connected between the first conductor 14 and the third liquid leakage sensor 184, and a third connector 194 connected between the third liquid leakage sensor 184 and the signal collector 11.

[0064] In this embodiment, the first conductor 14, the third liquid leakage sensor 184 and the signal collector 11 are connected through the second connector 192 and the third connector 194, and the connection effect and signal transmission efficiency are better.

[0065] In some embodiments, optionally, the second connector 192 comprises a second socket 1922 and a second plug 1924.

[0066] In some embodiments, optionally, the third connector 194 comprises a third socket 1942 and a third plug 1944.

[0067] The utility model provides a kind of energy storage equipment 2 in the second aspect, comprising: the liquid leakage detection assembly 1 as any one of the first aspect of the application.

[0068] The energy storage equipment 2 provided by the utility model has the liquid leakage detection assembly 1 of any one of the first aspect of the utility model, and therefore has all the beneficial effects of the liquid leakage detection assembly 1 of any one of the first aspect of the utility model.

[0069] Another embodiment of the application provides a liquid leakage detection harness for energy storage cabinet (the liquid leakage detection harness is also the liquid leakage detection assembly 1 of the application).

[0070] As far as we know, the energy storage cabinet of full-liquid-cooled commercial energy storage system should be equipped with a signal collector, and the working principle of the liquid leakage detection harness matched with the signal collector is that when the liquid leakage is detected, the two-phase short circuit is achieved, so as to achieve conduction, and the signal is transmitted to the detection device (i.e. the signal collector 11 of the application). In order to achieve good results, the liquid leakage sensing line needs to be wired to the detection device along the axial direction of the battery cluster of the energy storage cabinet, and the wiring is far away, which leads to the fact that the liquid leakage sensing line is extremely long, and if the detection line is arranged in the whole path, the probability of false alarm will increase. Therefore, according to the working principle of the liquid leakage sensing line and the area with high risk of liquid leakage of the energy storage cabinet, a liquid leakage detection harness for energy storage cabinet is designed, which solves the problem of long liquid leakage sensing line and realizes the function of multi-area detection.

[0071] The liquid leakage detection wire harness for the energy storage cabinet belongs to the field of energy storage system monitoring. The liquid leakage detection wire harness for the energy storage cabinet mainly comprises a plurality of liquid leakage sensing wires, copper conductors and connectors; the liquid leakage sensing wires in each module are welded with the connector plugs; one end of the copper conductor connecting the liquid leakage sensing wires of the modules is welded with the connector socket as a T-shaped copper conductor at each module fixed node, and the other end is welded with the connector plug; the two ends of the liquid leakage sensing wires in the energy storage cabinet 24 are welded with the connector socket; one end of the copper conductor connecting the signal collector 11 is welded with the connector plug, and the other end is directly connected with the detection device; the liquid leakage sensing wires and the copper conductors are directly connected through the connectors, which is convenient, fast, flexible, avoids the influence of the partition plate in the cabinet, reduces the length of the liquid leakage sensing wires, and realizes multi-area liquid leakage detection.

[0072] Specifically, the application provides a liquid leakage detection wire harness for an energy storage cabinet, which comprises a first liquid leakage sensing wire, a first connector socket, a first connector plug, a first copper conductor, a T-shaped bracket (i.e. a conductive bracket 15), a second copper conductor, a second connector socket, a second connector plug, a second liquid leakage sensing wire, a third conductor 164 and a signal collector 11. The signal collector 11 can be a liquid leakage detection device, which can determine whether liquid leakage occurs according to the sensing signal emitted by the liquid leakage sensor.

[0073] The first liquid leakage sensing wire is installed on the PACK (Pack Baseplate, battery pack) bottom plate and is used for PACK internal liquid leakage detection sensing;

[0074] The first connector socket is connected with the first liquid leakage sensing wire to realize signal conduction;

[0075] The first connector plug is connected with the first connector socket to realize first connector 12 conduction;

[0076] The first copper conductor is a common cable and is connected with the first connector plug;

[0077] The T-shaped bracket is connected with a plurality of first copper conductors and a separate second copper conductor to form a T-shaped cable connection mode;

[0078] The second copper conductor is connected with the second connector socket;

[0079] The second connector plug is connected with the second connector socket to realize second connector 192 conduction;

[0080] The second liquid leakage sensing wire is installed on the outer wall and the lower area of the bottom of the liquid cooling pipe 17 and is used for energy storage cabinet 24 internal liquid leakage area detection. The two ends of the second liquid leakage sensing wire are connected with the second connector plug to realize signal conduction;

[0081] One end of the third conductor 164 is connected with the second connector socket, and the other end is connected with the signal collector 11, so as to realize the final signal transmission.

[0082] According to the actual test, if the liquid leakage signal inside each PACK needs to be detected, a plurality of liquid leakage sensing lines need to be connected to the signal collector 11, and the staggered complex wiring is complicated, and the sensing lines are more, which increases the risk of false alarm probability, but if a plurality of sensing lines are used in parallel, the final signal is transmitted to one signal port of the signal collector 11, a large number of liquid leakage sensing lines can be saved, and the liquid leakage detection of multiple PACKs can be realized, and the risk of false alarm is reduced.

[0083] In addition, the liquid cooling pipe 17 in the energy storage cabinet 24 and the bottom of the cabinet are also prone to liquid leakage, and according to the actual test, liquid leakage sensing lines also need to be installed in these two areas. However, the liquid leakage sensing lines of the PACK in parallel are connected in series with the liquid leakage sensing lines in the cabinet, and share one signal port, which can also realize signal transmission, and achieve the detection effect and optimize the space wiring in the cabinet.

[0084] The first liquid leakage sensing line is installed on the bottom plate of each PACK and is used for liquid leakage detection inside each PACK. The first connector socket is installed on the PACK panel and is connected with the first liquid leakage sensing line, so as to realize the liquid leakage signal inside each PACK to be led out to the outside of the PACK panel.

[0085] One end of the first connector is connected with the first liquid leakage sensing line, and the other end is connected with the first copper conductor. Each first copper conductor is connected with the T-shaped support, so as to realize T-shaped connection and achieve the effect of parallel output signal.

[0086] One end of the second copper conductor is connected with each T-shaped support, so as to realize the series use of the ordinary cable in the cabinet and each first liquid leakage sensing line. The other end of the second copper conductor is connected with the second connector socket, the second connector socket is connected with the second connector plug, and the over-the-air docking is realized.

[0087] The second liquid leakage sensing line is installed on the outer wall of the liquid cooling pipe 17 of the energy storage cabinet 24 and the bottom of the cabinet, and is used for detecting the liquid leakage prone area in the cabinet. One end of the second liquid leakage sensing line is connected with the second connector plug, and the other end is transmitted to the signal collector 11 through the third connector 194, so as to realize the series-parallel use of the transmission line and solve the effect of "multi-area, common port" detection.

[0088] In this application, the first conductor 14, the second conductor 162 and the third conductor 164 can be copper conductors.

[0089] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. Such terminology means that a particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of such terminology in various places in the specification does not necessarily refer to the same embodiment or example. Moreover, it is appreciated that the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0090] Although embodiments of this application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A leak detection assembly comprising: The application is applied to a storage device, the storage device comprises a battery pack, and the leakage detection assembly comprises: a signal collector; a first connector embedded in the battery pack, the first connector comprising a first end located in the battery pack and a second end located outside the battery pack, the second end of the first connector being connected to the signal collector; a first leakage sensor arranged in the battery pack and connected to the first end of the first connector; wherein when electrolyte in the battery pack leaks, the first leakage sensor can generate a first induction signal after being in contact with the electrolyte and send the first induction signal to the signal collector.

2. The leakage detection assembly of claim 1, wherein, Further comprising: a first conductor connected between the signal collector and the second end of the first connector.

3. The leakage detection assembly of claim 2, wherein, The battery pack is multiple, and the number of the battery pack, the first leakage sensor and the first connector is the same, one first leakage sensor is arranged in each battery pack, and each first leakage sensor is connected to the signal collector through a first connector.

4. The leakage detection assembly of claim 3, wherein, The leakage detection assembly further comprises: a conductive support installed in the storage device, the first conductor being connected between the first connector and the conductive support; a second conductor connected between the signal collector and the conductive support.

5. The leakage detection assembly according to claim 4, wherein the number of the battery pack, the first leakage sensor, the first connector and the first conductor is greater than or equal to 5 and less than or equal to 10; and / or the conductive support is a T-shaped conductive support; and / or the first leakage sensor comprises a first leakage induction line; and / or the first conductor comprises a first copper conductor; and / or the first leakage sensor is welded to the first connector.

6. The leakage detection assembly of claim 1, wherein, The battery pack comprises a battery module and a shell, the shell comprising a bottom plate, a top plate and a surrounding plate, the surrounding plate being arranged between the bottom plate and the top plate, the bottom plate being arranged at the bottom of the battery module, the first leakage sensor being arranged on the bottom plate, and the first connector being embedded in the surrounding plate.

7. The leakage detection assembly of claim 6, wherein, The storage device further comprises a liquid cooling pipe connected to the shell, and the leakage detection assembly further comprises: a second leakage sensor installed on the outer wall surface of the liquid cooling pipe and connected between the second end of the first connector and the signal collector; wherein when the cooling liquid in the liquid cooling pipe leaks and flows onto the outer wall surface of the liquid cooling pipe, the second leakage sensor can generate a second induction signal and send the second induction signal to the signal collector.

8. The leakage detection assembly of claim 2, wherein, The storage device comprises a storage cabinet, the battery pack being arranged in the storage cabinet, the storage cabinet comprising a bottom cabinet, a top cabinet and a side cabinet located between the bottom cabinet and the top cabinet, and the leakage detection assembly further comprises: a third leakage sensor installed on the bottom cabinet and connected between the first conductor and the signal collector; The third liquid leakage sensor is capable of generating a third sensing signal and sending the third sensing signal to the signal collector when there is a leaking liquid on the bottom cabinet.

9. The leakage detection assembly of claim 8, wherein, Also included are: A second connector connected between the first conductor and the third liquid leakage sensor; A third connector connected between the third liquid leakage sensor and the signal collector.

10. An energy storage device, characterized by, Included are: The liquid leakage detection assembly of any one of claims 1 to 9.

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