Battery pack tray, battery pack and electric equipment

Abstract

The utility model provides a battery pack tray, a battery pack and electric equipment, and particularly relates to the technical field of batteries. The battery pack tray comprises a tray structure, an anti-explosion valve and a detection piece, and the tray structure is provided with a containing cavity for containing a battery pack. The tray structure comprises a frame, and an exhaust channel communicated with the containing cavity is formed in the frame. The anti-explosion valve is arranged on the frame and communicates with the containing cavity through an exhaust channel, and a water collecting groove is formed in the position, opposite to the anti-explosion valve, in the exhaust channel. The detection end of the detection piece is located in the water collection tank so as to detect liquid in the water collection tank. In this way, the containing cavity is connected with the anti-explosion valve on the frame through the exhaust channel in the frame, and the pressure in the containing cavity can be relieved. The water collecting tank located in the frame can collect liquid entering the anti-explosion valve when the anti-explosion valve is opened, the situation that the liquid enters the water collecting tank is monitored in real time through the detection piece, early warning is given out, and therefore potential safety hazards such as short circuit and corrosion of a battery pack are prevented, and safe operation of the battery pack is guaranteed.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and specifically to a battery pack tray, a battery pack, and an electrical device. Background Art

[0002] With the continuous advancement of power battery technology and the growing market demand, the performance of batteries in new energy battery vehicles is attracting increasing attention. Battery energy density and safety have become important indicators for measuring battery performance. Battery packs are usually equipped with explosion-proof valves, which can be opened in time to prevent explosion and release pressure when the internal pressure of the battery pack increases abnormally.

[0003] However, when conventional battery packs are unpacked or inspected for maintenance, it is found that after the explosion-proof valve is opened, the interior of the battery pack is directly connected to the external environment. Rainwater or car wash water can easily enter the battery pack through the opening of the explosion-proof valve, causing potential short circuits and corrosion to the battery pack, affecting the safe operation and stability of the entire vehicle. Utility Model Content

[0004] An embodiment of the present application provides a battery pack tray, a battery pack, and an electrical device, wherein the battery pack tray includes a tray structure, an explosion-proof valve, and a detection component. When the pressure in the battery pack's containment chamber increases, the explosion-proof valve on the tray structure opens to release the pressure. Rainwater or car wash water enters the sump through the vent of the explosion-proof valve. The detection component in the sump monitors the liquid in the sump in real time and issues an early warning signal, alerting users or maintenance personnel to take timely measures, thereby effectively preventing short circuits and corrosion in the battery pack due to liquid intrusion.

[0005] The embodiments of the present application provide the following technical solutions to solve the above technical problems:

[0006] In the first part, an embodiment of the present application provides a battery pack tray, including:

[0007] A tray structure having a receiving cavity, the tray structure including a frame, the frame having an exhaust passage in communication with the receiving cavity, the receiving cavity being used to receive a battery pack;

[0008] An explosion-proof valve, the explosion-proof valve being arranged on the frame, the explosion-proof valve being connected to the accommodating chamber through the exhaust channel, and a water collecting tank being provided in the exhaust channel at a position opposite to the explosion-proof valve;

[0009] A detection member, wherein a detection end of the detection member is located in the water collecting tank to detect the liquid in the water collecting tank.

[0010] Beneficial effects of the embodiments of the present application: The battery pack tray provided in the embodiments of the present application includes a tray structure, an explosion-proof valve and a detection component. Among them, the tray structure has a accommodating cavity, the tray structure includes a frame, and the frame has an exhaust channel connected to the accommodating cavity, and the accommodating cavity is used to accommodate the battery pack. The explosion-proof valve is arranged on the frame, and the explosion-proof valve and the accommodating cavity are connected through the exhaust channel, and a water collecting tank is provided in the exhaust channel at a position opposite to the explosion-proof valve. The detection end of the detection component is located in the water collecting tank to detect the liquid in the water collecting tank. In this way, the accommodating cavity of the tray structure can place the battery pack, and the accommodating cavity is connected to the explosion-proof valve on the frame through the exhaust channel in the frame, which can relieve the pressure in the accommodating cavity. The water collecting tank located in the frame can collect the liquid that enters when the explosion-proof valve is open, and the detection component monitors the situation of liquid entering the water collecting tank in real time and issues an early warning, thereby effectively preventing safety hazards such as short circuit and corrosion of the battery pack and ensuring the safe operation of the battery pack.

[0011] In one possible embodiment, a water collection structure is further included, the water collection structure being connected to the frame and having the water collection trough provided thereon. Thus, the water collection structure can collect liquid entering through the vent of the explosion-proof valve, and a detection element provided in the trough can provide timely liquid detection and warning, and take appropriate measures to effectively prevent liquid from entering the battery pack's accommodating cavity and potentially damaging the battery pack due to water ingress.

[0012] In one possible embodiment, the frame is provided with an opening communicating with the exhaust channel, the water collection structure is disposed on the opening, and the explosion-proof valve is disposed on the water collection structure. This ensures that the explosion-proof valve meets the normal battery pack exhaust requirements, and the water collection structure also provides a water collection trough water collection warning response function, thereby improving the safety and reliability of the battery pack.

[0013] In one possible embodiment, the water collection structure is provided with a through opening that communicates with the water collection tank, and the explosion-proof valve is mounted on the through opening. Thus, by mounting the explosion-proof valve on the through opening of the water collection structure, and the water collection structure on the opening of the frame, the explosion-proof valve is ensured to communicate with the exhaust passage within the frame, and the explosion-proof valve is connected to the accommodating cavity within the battery pack tray through the exhaust passage, thereby meeting the functions of water collection warning and exhaust explosion prevention, thereby ensuring the safety and reliability of the battery pack in the battery pack during use.

[0014] In one possible embodiment, the water collection structure is further provided with a through hole, which is connected to the water collection tank, and the detection member is mounted on the through hole. In this way, the detection end of the detection member is passed through the through hole of the water collection structure and can be located in the water collection tank of the water collection structure. When liquid is present in the water collection tank, the detection member can provide a timely warning.

[0015] In a possible embodiment, the water collection structure includes a first side plate and a second side plate arranged opposite to each other, and a bottom plate located between the first side plate and the second side plate, and the first side plate, the second side plate and the bottom plate form a water collection trough with open ends; the first side plate is located outside the frame, and the second side plate and the bottom plate are both located inside the frame; the opening of the water collection structure is set on the first side plate, and the through hole of the water collection structure is set on the second side plate.

[0016] In one possible embodiment, the bottom plate has a recessed space that is recessed toward the bottom end of the frame. The recessed space, the first side plate, and the second side plate form the water collection trough. This provides a larger volume for storing liquid in the water collection trough. When the explosion-proof valve is opened, rainwater enters the water collection trough of the water collection structure through the vent hole, preventing liquid from overflowing into the vent channel and entering the storage chamber, potentially damaging the battery pack.

[0017] In a possible embodiment, the bottom surface of the concave space is in a V-shaped structure. The V-shaped structure has a guiding function, which helps to promote the rapid flow and accumulation of liquid entering the water collection structure from the exhaust hole of the explosion-proof valve.

[0018] In a possible implementation, the included angle of the V-shaped structure is α, and 120°≤α≤150°.

[0019] In one possible embodiment, a base is further included, the base being disposed on a surface of the frame facing the accommodating cavity. The base is used to mount the detection member, with one end of the detection member connected to the base and the other end of the detection member passing through a through hole in the frame and positioned within the water collection tank. In this way, the detection member can be fixed to the base, ensuring its stability.

[0020] In a possible embodiment, the frame includes a front beam, a rear beam, and side beams, the side beam is located between the front beam and the rear beam, the front beam, the rear beam, and the side beams all have cavities therein, and two ends of the side beam are respectively connected to the front beam and the rear beam to form the exhaust channel;

[0021] The front beam is provided with the opening, the water collecting structure is provided on the opening, and the water collecting structure is communicated with the exhaust passage;

[0022] The front beam is further provided with an opening, which is arranged on a side of the front beam facing the accommodating cavity, and the opening is arranged opposite to the through hole on the water collecting structure, so that part of the detection member passes through the opening and the through hole is located in the water collecting tank;

[0023] The side beam is provided with a plurality of air outlet holes, and the accommodating cavity is communicated with the exhaust channel through the plurality of air outlet holes.

[0024] In a possible implementation, the explosion-proof valve has an exhaust hole, and the exhaust hole is connected to one end of the exhaust channel.

[0025] In one possible embodiment, the water collection structure is a metal part; the detection part includes two detection electrodes arranged at intervals, the two detection electrodes are located in the water collection tank, and the shortest distance between each detection electrode and the bottom of the water collection tank is h, and 1.0mm≤h≤3.0mm.

[0026] In one possible embodiment, a seal is further provided between the detection member and the base, thereby ensuring that the liquid in the sump enters the battery pack's accommodating cavity through the gap between the detection member and the base, thereby enhancing the sealing and reducing the possibility of a short circuit in the battery pack.

[0027] In the second part, the embodiment of the present application provides a battery pack, including:

[0028] Battery pack, and the battery pack tray mentioned above;

[0029] The battery pack is located in the accommodating cavity of the battery pack tray;

[0030] The detection component of the battery pack tray is electrically connected to the control circuit of the battery pack.

[0031] In the third part, the embodiment of the present application provides an electric device, including:

[0032] An electric device and the above-mentioned battery pack, wherein the battery pack is used to provide electric energy to the electric device.

[0033] In addition to the technical problems solved by the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by a battery pack tray, battery pack and electrical equipment provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments of the present application or the description of the prior art. Obviously, the drawings described below are only part of the embodiments of the present application. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 A schematic diagram of the structure of a battery pack tray provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the internal structure of a battery pack tray provided in an embodiment of the present application;

[0037] Figure 3 A schematic detailed view of a portion A of a battery pack tray provided in an embodiment of the present application;

[0038] Figure 4 A schematic diagram of a portion of the structure of the front beam and water collection structure of the battery pack tray provided in an embodiment of the present application;

[0039] Figure 5 A schematic detailed diagram of part B of the battery pack tray provided in an embodiment of the present application;

[0040] Figure 6 A cross-sectional view of the front beam of the battery pack tray provided in an embodiment of the present application;

[0041] Figure 7 A schematic detailed view of a portion C of a battery pack tray provided in an embodiment of the present application;

[0042] Figure 8 A schematic structural diagram of the front beam of the battery pack tray provided in an embodiment of the present application;

[0043] Figure 9 A back view of the front beam of the battery pack tray provided in an embodiment of the present application;

[0044] Figure 10 A schematic structural diagram of the water collection structure of the battery pack tray provided in an embodiment of the present application;

[0045] Figure 11 A cross-sectional view of the water collection structure of the battery pack tray provided in an embodiment of the present application;

[0046] Figure 12 A schematic structural diagram of the detection component of the battery pack tray provided in an embodiment of the present application.

[0047] Description of reference numerals:

[0048] 100-pallet structure;

[0049] 110-border;

[0050] 120-front beam; 121-opening; 122-opening;

[0051] 130-rear beam;

[0052] 140-side beam; 141-air outlet;

[0053] 150-cavity;

[0054] 160-accommodation cavity;

[0055] 170-exhaust channel;

[0056] 200-water collection structure;

[0057] 210-water collection tank;

[0058] 220-first side plate; 221-through port;

[0059] 230 - second side plate; 231 - through hole;

[0060] 240-base plate; 241-V-shaped structure;

[0061] 300-base;

[0062] 310-seal;

[0063] 400-explosion-proof valve;

[0064] 500-test pieces;

[0065] 510 - detection electrode; 511 - first electrode; 512 - second electrode. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0067] An embodiment of the present application provides an electrical device, which includes an electrical device and a battery pack, wherein the battery pack provides electrical energy to the electrical device. For example, the electrical device can be a vehicle or an energy storage device. When the electrical device is a vehicle, the vehicle can be a new energy vehicle (NEV), such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle can also be any vehicle with a battery.

[0068] The electrical device can also be a motor, control system, lighting system, etc. When the electrical device is an energy storage device, the electrical device can be an inverter, controller, etc. The battery pack can include multiple batteries. In one possible implementation, the battery can be cylindrical, or it can be a prismatic, or it can have multiple cells inside. Multiple batteries are connected and controlled by a specific control system to store and output electrical energy. The battery pack or batteries can provide electrical energy to the electrical device to meet the normal operation of the device.

[0069] The battery pack provided in the embodiments of the present application includes a battery pack and a battery pack tray. The battery pack, which may be a lithium-ion battery pack, is located within the battery pack tray and can provide stable and reliable power output to meet the energy needs of various electric devices or vehicles. The internal space of the battery pack tray accommodates the battery pack, providing stable space and support for the battery pack during transportation and use.

[0070] The present application embodiment provides a battery pack tray, such as Figure 1 、 Figure 2 and Figure 10 As shown, it includes a tray structure 100, an explosion-proof valve 400 and a detection member 500. The tray structure 100 has a accommodating cavity 160, and the tray structure 100 includes a frame 110. The frame 110 has an exhaust channel 170 connected to the accommodating cavity 160, and the accommodating cavity 160 is used to accommodate the battery pack. The explosion-proof valve 400 is set on the frame 110, and the explosion-proof valve 400 is connected to the accommodating cavity 160 through the exhaust channel 170. A water collection tank 210 is provided in the exhaust channel 170 at a position opposite to the explosion-proof valve 400. The detection end of the detection member 500 is located in the water collection tank 210 to detect the liquid in the water collection tank 210.

[0071] It is understandable that the frame 110 of the tray structure 100 provides structural support, and the accommodating cavity 160 enclosed by the frame 110 can be used to place the battery pack, ensuring the stability of the battery pack during transportation and use. An explosion-proof valve 400 is provided on the frame 110, and an exhaust channel 170 connected to the accommodating cavity 160 is provided in the frame 110, and the explosion-proof valve 400 and the accommodating cavity 160 are connected through the exhaust channel 170. When an abnormality occurs in the battery pack, the pressure inside the accommodating cavity 160 rises sharply, and the explosion-proof valve 400 can automatically open, and the gas in the accommodating cavity 160 is quickly discharged through the explosion-proof valve 400 through the exhaust channel 170, reducing the possibility of the battery pack exploding due to excessive pressure.

[0072] When the explosion-proof valve 400 is in an open state due to the increased pressure inside the accommodating chamber 160, the exhaust hole on the explosion-proof valve 400 is in an open state, and the accommodating chamber 160 of the tray structure 100 is connected to the external environment through the exhaust channel 170 in the frame 110. Liquid in the external environment of the battery pack (such as rainwater, car wash water, etc.) can enter the exhaust channel 170 in the frame 110 through the exhaust hole on the explosion-proof valve 400. It is understandable that a water collection tank 210 is provided at a position opposite the exhaust channel 170 and the explosion-proof valve 400 to collect liquid, preventing the liquid from entering the accommodating chamber 160 through the exhaust hole on the explosion-proof valve 400 along the exhaust channel 170, thereby avoiding short circuits or corrosion to the battery cells in the battery pack.

[0073] The detection end of the detection element 500 is placed in the water collection tank 210 and electrically connected to the battery pack's control circuit. It monitors the presence of liquid in the water collection tank 210 in real time and generates an early warning response, effectively preventing the possibility of short circuits and corrosion in the battery pack caused by water ingress when the explosion-proof valve 400 is open. For example, the early warning response may be to shut down the battery pack's charging and discharging functions or to activate drainage of the water collection tank 210, without limitation.

[0074] In some embodiments of the present application, Figure 4 、 Figure 5 and Figure 10 As shown, the battery pack tray also includes a water collection structure 200, which is connected to the frame 110 and has a water collection tank 210. This allows the water collection structure 200 to collect liquid that enters through the vent of the explosion-proof valve 400. A detection member 500 disposed within the water collection tank 210 provides timely liquid detection and early warning, and appropriate measures are taken to effectively prevent liquid from entering the battery pack's accommodating cavity 160 and potentially damaging the battery pack due to water ingress.

[0075] The water collection structure 200 and the frame 110 can be tightly connected by welding. The connection between the water collection structure 200 and the frame 110 forms a seal, ensuring that the water collection structure 200 will not loosen or fall off when the battery pack tray is subjected to external forces such as vibration and impact, thereby ensuring the integrity and sealing of the connection between the water collection structure 200 and the frame 110. It is understood that the water collection groove 210 on the water collection structure 200 and the exhaust channel 170 are also in the same state.

[0076] In some embodiments of the present application, Figure 5 and Figure 8 As shown, the frame 110 is provided with an opening 121 communicating with the exhaust channel 170, and the water collection structure 200 is disposed on the opening 121. The explosion-proof valve 400 is disposed on the water collection structure 200. This ensures that the explosion-proof valve 400 meets the normal battery pack exhaust requirements, and the water collection structure 200 also meets the water collection warning response function of the water collection tank 210, thereby improving the safety and reliability of the battery pack.

[0077] In the example of the present application, two openings 121 are provided on the frame 110, and each opening 121 is provided with a water collection structure 200. Each water collection structure 200 is connected to the exhaust channel 170 in the frame 110. The water collection structure 200 is welded to the opening 121 on the frame 110, and each water collection structure 200 is provided with an explosion-proof valve 400. It should be noted that the number of explosion-proof valves 400 and water collection structures 200 can be two, but is not limited to two. For example, one, three, or more explosion-proof valves 400 and water collection structures 200 can be adjusted according to actual working conditions and are not limited here. It is understood that when there are multiple openings 121 on the frame 110, even if the explosion-proof valve 400 and water collection structure 200 on one opening 121 malfunctions and cannot be used normally, the explosion-proof valves 400 and water collection structures 200 on the other openings 121 can still continue to work, ensuring the safe operation of the battery pack.

[0078] In some embodiments of the present application, Figure 10 and Figure 11 As shown, the water collection structure 200 is provided with a through-port 221, which is connected to the water collection tank 210, and the explosion-proof valve 400 is installed on the through-port 221. In this way, the explosion-proof valve 400 is installed on the through-port 221 of the water collection structure 200, and the water collection structure 200 is installed on the opening 121 of the frame 110, ensuring that the explosion-proof valve 400 is connected to the exhaust channel 170 in the frame 110, and the explosion-proof valve 400 is connected to the accommodating cavity 160 in the battery pack tray through the exhaust channel 170, meeting the functions of water collection warning and exhaust explosion prevention, and ensuring the safety and reliability of the battery pack in the battery pack during use.

[0079] It should be noted that the through hole 231 on the water collection structure 200 is located above the water collection tank 210. The shortest distance between the through hole 231 and the bottom of the water collection tank 210 can be 2.0 mm, but is not limited to 2.0 mm. For example, it can also be 3.0 mm, 4.5 mm, or 5.5 mm. The distance between the through hole 231 on the water collection structure 200 and the water collection tank 210 can be adjusted according to actual working conditions. When the distance between the through hole 231 and the bottom of the water collection tank 210 is too large, the volume of the water collection tank 210 will increase, and the space available for liquid storage in the water collection structure 200 will increase accordingly.

[0080] In some embodiments of this application, please refer to Figure 4 、 Figure 5 and Figure 10 The water collection structure 200 is further provided with a through hole 231, which is connected to the water collection tank 210. The detection member 500 is mounted on the through hole 231. In this way, the detection end of the detection member 500 is passed through the through hole 231 of the water collection structure 200 and can be located in the water collection tank 210 of the water collection structure 200. When there is liquid in the water collection tank 210, the detection member 500 can provide a timely warning.

[0081] In some embodiments of the present application, Figure 10 As shown, the water collection structure 200 includes a first side plate 220 and a second side plate 230 that are arranged opposite to each other, and a bottom plate 240 located between the first side plate 220 and the second side plate 230. The first side plate 220, the second side plate 230 and the bottom plate 240 form a water collection tank 210 with open ends. Figure 4 、 Figure 5 and Figure 10 As shown, the first side panel 220 is located outside the frame 110 , and the second side panel 230 and the bottom panel 240 are both located inside the frame 110 .

[0082] The first side plate 220 is located on the side of the frame 110 facing away from the accommodating chamber 160, and the first side plate 220 is located outside the frame 110. The first side plate 220 covers the opening 121 on the frame 110. The first side plate 220 is welded to the opening 121 of the frame 110 to form a seal, preventing external liquid or impurities from entering the exhaust channel 170 through the water collection structure 200 and the opening 121. The second side plate 230 is located inside the frame 110, and the second side plate 230 is in contact with the side of the frame 110 facing the accommodating chamber 160, thereby enhancing the structural strength of the water collection structure 200 and ensuring that the water collection structure 200 can withstand a certain amount of liquid pressure and external impact. The bottom plate 240 is located between the first side plate 220 and the second side plate 230, and together they form the bottom of the water collection tank 210 to collect liquid that enters the exhaust channel 170 from the exhaust hole on the explosion-proof valve 400.

[0083] It can be understood that the first side plate 220, the second side plate 230 and the bottom plate 240 form a water collecting trough 210 with open ends, which can avoid blocking the exhaust channel 170 in the frame 110 and ensure that the gas inside the accommodating cavity 160 can be discharged smoothly when the pressure inside the accommodating cavity 160 increases.

[0084] In some embodiments of the present application, Figure 1 、 Figure 10 and Figure 11 As shown, the bottom plate 240 has a concave space that is recessed toward the bottom end of the frame 110. The concave space, the first side plate 220, and the second side plate 230 form a water collection tank 210. This provides a larger volume for storing liquid in the water collection tank 210. After the explosion-proof valve 400 is opened, rainwater enters the water collection tank 210 of the water collection structure 200 through the vent hole, preventing the liquid from overflowing into the vent channel 170 and entering the accommodating cavity 160, thereby damaging the battery pack.

[0085] The concave space also helps optimize the liquid flow path. When liquid enters the water collection structure 200 through the vent hole of the explosion-proof valve 400, it naturally flows into the concave space and collects at the bottom of the water collection tank 210. If the accumulated liquid touches the detection element 500, an early warning response can be generated, allowing timely measures to be taken to prevent the liquid from flowing into the accommodating cavity 160 and causing a short circuit in the battery pack.

[0086] In some embodiments of this application, please refer to Figure 6 、 Figure 7 and Figure 11 The bottom surface of the concave space is a V-shaped structure 241, the angle of the V-shaped structure 241 is α, and 120°≤α≤150°, for example, it can be 120°, 135°, 145° or 150°, and the angle α of the V-shaped structure 241 can be adjusted according to actual working conditions.

[0087] The V-shaped structure 241 provides a guiding function, helping to promote the rapid flow and accumulation of liquid entering the water collection structure 200 from the vent of the explosion-proof valve 400. Once liquid enters the water collection structure 200, it can flow rapidly along the inclined surface of the V-shaped structure 241 toward the water collection trough 210 and accumulate at the bottom of the trough 210, reducing the liquid's residence time within the water collection structure 200. This improves water collection efficiency and further enhances the safety of the battery pack.

[0088] Of course, in some examples, the bottom surface of the concave space may have other shapes besides a V-shaped structure, such as a U-shaped or arc-shaped structure. In the embodiment of the present application, the V-shaped structure is specifically used as an example for description.

[0089] In some embodiments of the present application, Figures 2 to 5 、 Figure 9As shown, the battery pack tray also includes a base 300, which is disposed on the side of the frame 110 facing the accommodating cavity 160. The base 300 is used to mount the detection member 500. One end of the detection member 500 is connected to the base 300, and the other end of the detection member 500 passes through the through hole 231 of the second side plate 230 and is located in the water collection tank 210. In this way, the detection member 500 can be fixed to the base 300 to ensure the stability of the detection member 500.

[0090] In the example of the present application, the base 300 and the detection member 500 can be connected by a threaded connection, with one end of the detection member 500 connected to the base 300, and the detection member 500 is fixed to the frame 110 through the base 300. The other end of the detection member 500 passes through the through hole 231 on the second side plate 230 and is located in the water collection tank 210 of the water collection structure 200, so that the detection member 500 can directly contact the liquid in the water collection tank 210, and more timely and accurately monitor the water inflow data of the water collection tank 210.

[0091] In some embodiments of the present application, Figure 1 and Figure 2 、 Figures 4 to 6 、 Figure 9 As shown, the frame 110 includes a front beam 120, a rear beam 130 and a side beam 140. The side beam 140 is located between the front beam 120 and the rear beam 130. The front beam 120, the rear beam 130 and the side beam 140 all have a cavity 150 inside. The two ends of the side beam 140 are respectively connected to the front beam 120 and the rear beam 130 to form an exhaust channel 170.

[0092] The front beam 120, rear beam 130, and side beam 140 can be made of metal, such as aluminum or steel, without limitation. The material of the frame 110 can be selected based on actual working conditions. In the present embodiment, the front beam 120, rear beam, and side beam 140 have cavities 150 therein. The number of cavities 150 is three, but is not limited to three. For example, the number can be two, four, or five.

[0093] It is understandable that the cavity 150 can reduce the weight of the frame 110 and ensure that the frame 110 has a certain structural strength to withstand various forces and vibrations inside and outside the battery pack. It should be noted that the number and shape of the cavities 150 in the front beam 120, the rear beam 130 and the side beam 140 are consistent to ensure smooth connectivity of the exhaust duct. In the example of this application, both ends of the front beam 120, the rear beam 130 and the side beam 140 have a chamfer design to improve welding quality and reduce welding defects, so as to ensure the sealing effect of the welded assembly of the front beam 120, the rear beam 130 and the side beam 140.

[0094] like Figures 4 and 5 、 Figure 8As shown, an opening 121 is provided on the front beam 120, and a water collecting structure 200 is arranged on the opening 121, and the water collecting structure 200 is connected to the exhaust channel 170. The opening 121 is located on the side of the front beam 120 facing away from the accommodating chamber 160, which is conducive to the installation and subsequent maintenance of the water collecting structure 200. The shape and size of the opening 121 are the same as the first side plate 220 of the water collecting structure 200, ensuring that the water collecting structure 200 can fit tightly on the opening 121 of the front beam 120, ensuring that a good seal is formed after welding, and the opening 121 of the front beam 120 and the first side plate 220 of the water collecting structure 200 are installed in coordination to simplify the installation process. The two ends of the water collecting structure 200 are open, ensuring that the opening 121 is connected to the exhaust channel 170 through the water collecting structure 200, and the water collecting structure 200 meets the functions of water collection and exhaust.

[0095] Please continue reading Figure 2 、 Figure 5 and Figure 8 The front beam 120 is further provided with an opening 122, which is disposed on the side of the front beam 120 facing the accommodating chamber 160. The opening 122 is disposed opposite the through-hole 231 on the water collection structure 200, so that a portion of the detection member 500 passes through the opening 122 and the through-hole 231 and is located within the water collection tank 210. In this way, the detection end of the detection member 500 can pass through the opening 122 of the front beam 120 and the through-hole 231 on the second side plate 230 of the water collection structure 200, and be located within the water collection tank 210 of the water collection structure 200 to achieve liquid detection.

[0096] In the example of the present application, the opening 122 on the front beam 120 and the through-hole 231 on the second side plate 230 of the water collection structure 200 are both circular holes, but are not limited to circular holes. For example, they can also be rectangular holes or holes of other shapes, and the inner diameters of the opening 122 and the through-hole 231 are large enough to allow the detection end of the detection member 500 to extend into. It is understandable that when the inner diameters of the opening 122 and the through-hole 231 are the same as the detection end of the detection member 500, they can fit tightly together, reducing the amount of liquid in the water collection tank 210 from flowing out of the through-hole 221 into the battery pack's accommodating cavity 160.

[0097] like Figure 1 and Figure 2As shown, a plurality of air outlet holes 141 are provided on the side beam 140, and the accommodating cavity 160 is connected to the exhaust channel 170 through the plurality of air outlet holes 141. In the example of the present application, the space inside the frame 110 is divided into two parts. The interior of the tray structure 100 has two accommodating cavities 160, and each accommodating cavity 160 is provided with four air outlet holes 141. The air outlet holes 141 are symmetrically distributed on the side beams 140 on both sides, and the accommodating cavity 160 and the exhaust channel 170 can be connected through the air outlet holes 141. When an abnormality occurs in the battery pack, the pressure inside the accommodating cavity 160 rises sharply, and the gas in the accommodating cavity 160 can enter the exhaust channel 170 through the air outlet holes 141 and be discharged through the exhaust holes on the explosion-proof valve 400, ensuring that the pressure in the battery pack can be released in time, effectively preventing the occurrence of safety accidents such as battery pack explosion and fire.

[0098] In some embodiments of the present application, the water collection structure 200 is a metal part. Figure 7 and Figure 12 As shown, the detection member 500 includes two detection electrodes 510 spaced apart. The two detection electrodes 510 are located in the water collecting tank 210 , and the shortest distance between each detection electrode 510 and the bottom of the water collecting tank 210 is h, and 1.0 mm ≤ h ≤ 3.0 mm.

[0099] The water collection structure 200 can be made of a metal member of the same material as the frame 110, or a metal member of a different material from the frame 110, such as aluminum or steel. There is no limitation here and the selection can be made according to actual working conditions.

[0100] In the example of the present application, the detection member 500 has two detection electrodes 510 spaced apart, namely a first electrode 511 and a second electrode 512. The detection member 500 and the detection electrode 510 can use a nylon matrix material as a carrier, but are not limited to nylon. For example, other materials can also be used.

[0101] The first electrode 511 can be electrically connected to a high-level signal via a first signal line within the battery pack, and the second electrode 512 can be connected to a processor via a second signal line within the battery pack. The processor is configured to detect the high-level signal and determine whether water has entered the water collection tank 210 of the water collection structure 200. When liquid is present in the water collection tank 210 and the liquid submerges the bottom ends of the first electrode 511 and the second electrode 512, the water conducts electricity between the first electrode 511 and the second electrode 512, causing the first signal line within the battery pack connected to the first electrode 511 and the second signal line within the battery pack connected to the second electrode 512 to connect and form an equal potential. The processor receives the high-level signal as a detection signal indicating water has entered the water collection tank 210 and responds promptly.

[0102] The shortest distance between the bottom end of the detection electrode 510 located in the water collection tank 210 and the bottom of the water collection tank 210 is h, and 1.0mm≤h≤3.0mm, for example, it can be 1.0mm, 1.2mm, 2.5mm or 3.0mm. It is understandable that when h is too small, the bottom end of the detection electrode 510 and the bottom of the metal water collection tank 210 are prone to accidental collision. When h is too large, the liquid in the water collection tank 210 needs to accumulate to a certain amount before triggering an early warning, which is not conducive to timely detection and response. The shortest distance h between the detection electrode 510 and the bottom of the water collection tank 210 can be adjusted according to the actual working conditions to ensure that a small amount of liquid enters the water collection structure 200 and the liquid does not enter the accommodating cavity 160 along the exhaust channel 170, so that it can be detected in time and an early warning can be issued.

[0103] In some embodiments of the present application, Figure 3 and Figure 5 As shown, a seal 310 is also provided between the detection member 500 and the base 300. This ensures that the liquid in the sump 210 enters the battery pack's accommodating cavity 160 through the gap between the detection member 500 and the base 300, thereby enhancing the seal and reducing the possibility of a battery pack short circuit. The seal 310 can be made of rubber, silicone, or plastic, without limitation, and can be adjusted based on actual operating conditions.

[0104] Among them, the terms "upper" and "lower" are used to describe the relative position relationship of each structure in the accompanying drawings, which is only for the convenience of description and is not used to limit the scope of implementation of this application. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of this application without substantially changing the technical content.

[0105] It should be noted that, in this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0106] Furthermore, in this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0107] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack tray, characterized in that: include: A tray structure (100), the tray structure (100) having a receiving cavity (160), the tray structure (100) including a frame (110), the frame (110) having an exhaust passage (170) in communication with the receiving cavity (160), the receiving cavity (160) being used to receive a battery pack; an explosion-proof valve (400), the explosion-proof valve (400) being arranged on the frame (110), the explosion-proof valve (400) being connected to the accommodating chamber (160) via the exhaust passage (170), and a water collecting tank (210) being provided in the exhaust passage (170) at a position opposite to the explosion-proof valve (400); A detection member (500), wherein a detection end of the detection member (500) is located in the water collecting tank (210) to detect the liquid in the water collecting tank (210).

2. The battery pack tray according to claim 1, wherein: It also includes a water collection structure (200), the water collection structure (200) is connected to the frame (110), and the water collection tank (210) is provided on the water collection structure (200).

3. The battery pack tray according to claim 2, characterized in that: The frame (110) is provided with an opening (121) communicating with the exhaust channel (170), and the water collection structure (200) is arranged on the opening (121); The explosion-proof valve (400) is arranged on the water collection structure (200).

4. The battery pack tray according to claim 3, characterized in that: The water collection structure (200) is provided with a through port (221), the through port (221) is connected to the water collection tank (210), and the explosion-proof valve (400) is installed on the through port (221).

5. The battery pack tray according to claim 3, characterized in that: The water collecting structure (200) is further provided with a through hole (231), the through hole (231) is connected to the water collecting tank (210), and the detection member (500) is mounted on the through hole (231).

6. The battery pack tray according to any one of claims 2 to 5, characterized in that: The water collection structure (200) comprises a first side plate (220) and a second side plate (230) arranged opposite to each other, and a bottom plate (240) located between the first side plate (220) and the second side plate (230); the first side plate (220), the second side plate (230) and the bottom plate (240) enclose the water collection tank (210) with open ends. The first side panel (220) is located outside the frame (110), and the second side panel (230) and the bottom panel (240) are both located inside the frame (110); The through opening (221) of the water collection structure (200) is arranged on the first side plate (220), and the through hole (231) of the water collection structure (200) is arranged on the second side plate (230).

7. The battery pack tray according to claim 6, characterized in that: The bottom plate (240) has a concave space that is recessed toward the bottom end of the frame (110), and the concave space, the first side plate (220), and the second side plate (230) form the water collecting trough (210).

8. The battery pack tray according to claim 7, characterized in that: The bottom surface of the concave space is in a V-shaped structure (241).

9. The battery pack tray according to claim 8, characterized in that: The included angle of the V-shaped structure (241) is α, and 120°≤α≤150°.

10. The battery pack tray according to claim 6, characterized in that: The invention also includes a base (300), wherein the base (300) is arranged on a surface of the frame (110) facing the accommodating cavity (160), and the base (300) is used to install the detection member (500), one end of the detection member (500) is connected to the base (300), and the other end of the detection member (500) passes through the through hole (231) of the second side plate (230) and is located in the water collecting tank (210).

11. The battery pack tray according to claim 3, characterized in that: The frame (110) comprises a front beam (120), a rear beam (130) and a side beam (140); the side beam (140) is located between the front beam (120) and the rear beam (130); the front beam (120), the rear beam (130) and the side beam (140) all have cavities (150) therein; two ends of the side beam (140) are respectively connected to the front beam (120) and the rear beam (130) to form the exhaust passage (170); The front beam (120) is provided with the opening (121), the water collection structure (200) is arranged on the opening (121), and the water collection structure (200) is connected to the exhaust channel (170); The front beam (120) is further provided with an opening (122), the opening (122) being arranged on a surface of the front beam (120) facing the accommodating cavity (160), and the opening (122) being arranged opposite to the through hole (231) on the water collecting structure (200), so that part of the detection member (500) passes through the opening (122) and the through hole (231) is located in the water collecting tank (210); The side beam (140) is provided with a plurality of air outlet holes (141), and the accommodating cavity (160) and the exhaust channel (170) are connected through the plurality of air outlet holes (141).

12. The battery pack tray according to claim 11, wherein: The explosion-proof valve (400) is provided with an exhaust hole, and the exhaust hole is connected to one end of the exhaust channel (170).

13. The battery pack tray according to any one of claims 7 to 10, characterized in that: The water collection structure (200) is a metal part; The detection member (500) comprises two detection electrodes (510) arranged at intervals, the two detection electrodes (510) being located in the water collecting trough (210), and the shortest distance between each detection electrode (510) and the bottom of the water collecting trough (210) being h, and 1.0 mm ≤ h ≤ 3.0 mm.

14. The battery pack tray according to claim 10, wherein: A sealing member (310) is further provided between the detection member (500) and the base (300).

15. A battery pack, characterized in that: include: A battery pack, and a battery pack tray according to any one of claims 1 to 14; The battery pack is located in the accommodating cavity (160) of the battery pack tray; The detection member (500) of the battery pack tray is electrically connected to the control circuit of the battery pack.

16. An electrical device, characterized in that: include: An electric device, and the battery pack as claimed in claim 15, wherein the battery pack is used to provide electrical energy to the electric device.

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