Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, the battery pack comprises a tray and a spraying device, a smoke exhaust channel is formed on the tray, and the smoke exhaust channel is provided with an exhaust port; the spraying device is arranged on the tray and comprises a spray head, and the spray head is arranged towards the exhaust port of the smoke exhaust channel. Therefore, the tray provides support and protection effects for the internal structure of the battery pack, the smoke exhaust channel is the flowing guide direction of smoke, and the nozzle of the spraying device is arranged towards the exhaust port, so that the pertinence and efficiency of the smoke exhaust device on smoke treatment can be improved, the smoke is effectively degraded, smoke accumulation is avoided, and the risk of fire caused by heat diffusion of the battery pack is reduced; and the safety of the battery pack is improved. The integral structure of the battery pack is simplified by the integration of the tray and the spraying device, so that the weight is reduced, the space is saved, and the battery pack is convenient to produce, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack and an electrical device. Background Art

[0002] In the prior art, a battery management device detects the smoke concentration and gives an alarm prompt to remind passengers to stay away in time. This function only serves as a reminder and does not reduce the safety hazard of thermal diffusion. Explosion-proof valves and breather valves are installed at the front and back of the battery pack to discharge the gas in the pack and reduce the gas accumulation in the pack. However, the smoke exhaust speed is still slower than the gas generation speed, and there is always gas accumulation, and the risk of open fire cannot be avoided. The battery pack is designed with an exhaust channel to cooperate with the explosion-proof valve to accelerate the exhaust rate, but the smoke spread still cannot be avoided, and the hidden danger of open fire still exists. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. To this end, the first object of the utility model is to provide a battery pack, which reduces the risk of thermal diffusion and ignition of the battery pack and improves the safety of the battery pack.

[0004] The second object of the utility model is to provide an electrical device including the battery pack described in the above embodiment.

[0005] The battery pack according to the first aspect embodiment of the utility model includes: a tray and a spraying device. The tray is formed with a smoke exhaust channel, and the smoke exhaust channel has an outlet; the spraying device is arranged on the tray, and the spraying device includes a nozzle, and the nozzle is arranged towards the outlet of the smoke exhaust channel.

[0006] In the battery pack according to the embodiment of the utility model, the tray provides support and protection for the internal structure of the battery pack. The smoke exhaust channel guides the flow direction of the smoke. The nozzle of the spraying device is arranged towards the outlet, which can improve the pertinence and efficiency of the smoke exhaust device in dealing with the smoke, effectively degrade the smoke, avoid smoke accumulation, reduce the risk of thermal diffusion and ignition of the battery pack, and improve the safety of the battery pack. The integration of the tray and the spraying device simplifies the overall structure of the battery pack, is beneficial to reducing weight, saving space, and facilitating the production, assembly and maintenance of the battery pack.

[0007] In some embodiments, the nozzle extends into the smoke exhaust channel through the outlet.

[0008] In some embodiments, it further includes: a battery management device, and the battery management device communicates with the spraying device.

[0009] In some embodiments, it further includes: a smoke sensor, which is arranged in the tray and communicates with the battery management device. When the smoke sensor detects that the smoke concentration in the battery pack reaches a predetermined threshold, the battery management device controls the spraying device to operate.

[0010] In some embodiments, the nozzle includes: a housing and a plurality of spray pipes. The housing defines a water inlet chamber; the plurality of spray pipes are arranged in the housing and respectively communicate with the water inlet chamber.

[0011] In some embodiments, the spraying device further includes: a liquid storage tank and a connecting pipe. The liquid storage tank is formed with a liquid outlet; the connecting pipe is connected between the water inlet chamber and the liquid outlet.

[0012] In some embodiments, the spraying device further includes: a movable plate and a driving member. The movable plate divides the liquid storage tank into a first chamber and a second chamber, and the first chamber is formed with the liquid outlet; the driving member is connected to the movable plate to drive the movable plate to move between the first chamber and the second chamber.

[0013] In some embodiments, the driving member includes a cylinder.

[0014] In some embodiments, the movable plate includes: a plate body and a seal. The seal is arranged between the plate body and the side wall of the liquid storage tank.

[0015] In some embodiments, the tray includes: a bottom plate and a plurality of side beams. The plurality of side beams are arranged along the circumference of the bottom plate, and the spraying device is arranged on at least one of the plurality of side beams.

[0016] In some embodiments, the plurality of side beams include a first side beam and a second side beam. The first side beam and the second side beam are arranged in a first direction. At least one of the first side beam and the second side beam forms a smoke exhaust channel; the battery pack further includes at least one battery cell module, and the battery cell module is arranged between the first side beam and the second side beam. The battery cell module includes a plurality of battery cells, and the plurality of battery cells are arranged in a second direction. The first direction is perpendicular to the second direction, and the pressure relief valve of each battery cell communicates with the smoke exhaust channel.

[0017] In some embodiments, at least one of the first side beam and the second side beam is formed with an opening, and the opening forms the smoke exhaust channel.

[0018] In some embodiments, there are a plurality of spraying devices, and the plurality of spraying devices are respectively arranged at the joints of adjacent two side beams.

[0019] An electrical device according to a second aspect embodiment of the present utility model includes a battery pack according to the above first aspect embodiment of the present utility model.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present utility model.

[0023] Figure 2 is a schematic diagram of a tray according to an embodiment of the present utility model.

[0024] Figure 3 is Figure 2 an enlarged schematic diagram of the P region in

[0025] Figure 4 is a schematic diagram of a spray device according to an embodiment of the present utility model.

[0026] Figure 5 is an assembly schematic diagram of the spray device according to an embodiment of the present utility model.

[0027] REFERENCE NUMERALS:

[0028] 100, battery pack;

[0029] 10, tray; 11, smoke exhaust channel; 12, discharge port; 13, bottom plate; 14, side beam; 141, first side beam; 142, second side beam;

[0030] 20, spray device; 21, nozzle; 22, housing; 221, water inlet chamber; 23, spray pipe; 24, connecting pipe; 25, liquid storage tank; 251, liquid outlet; 252, first chamber; 253, second chamber; 26, movable plate; 27, driving member;

[0031] A, first direction; B, second direction; C, third direction. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. Below, reference is made to Figures 1-5 Describe a battery pack 100 according to an embodiment of the present utility model, including: a tray 10 and a spray device 20. The battery pack 100 has a first direction A, a second direction B, and a third direction C.

[0033] Specifically, as Figures 1-5 shown, the tray 10 is formed with a smoke exhaust passage 11, and the smoke exhaust passage 11 has an exhaust outlet 12; the spraying device 20 is arranged on the tray 10, and the spraying device 20 includes a spray head 21, and the spray head 21 is arranged facing the exhaust outlet 12 of the smoke exhaust passage 11.

[0034] Combined with Figures 1-5 , the smoke exhaust passage 11 formed in the tray 10 extends along the second direction B of the battery pack 100, and the exhaust outlet 12 is arranged at one end of the smoke exhaust passage 11 away from the center of the battery pack 100 along the second direction B of the battery pack 100. When heat diffusion or other abnormal conditions occur inside the battery pack 100, the generated smoke can be discharged through the smoke exhaust passage 11 and the exhaust outlet 12, and the exhaust outlet 12 is located at both ends of the tray 10 along the second direction B. The spraying device 20 stores a degradation liquid for degrading smoke inside, and the degradation liquid enters the smoke exhaust passage 11 through the spray head 21 to contact the smoke and degrade it. The spray head 21 being arranged facing the exhaust outlet 12 is beneficial for the degradation liquid to directly act on the smoke.

[0035] For the battery pack 100 according to the embodiment of the present invention, the tray 10 provides support and protection for the internal structure of the battery pack 100. The smoke exhaust passage 11 guides the flow direction of the smoke. The spray head 21 of the spraying device 20 being arranged facing the exhaust outlet 12 can improve the pertinence and efficiency of the smoke exhaust device in dealing with smoke, effectively degrade the smoke, avoid smoke accumulation, reduce the risk of thermal diffusion and fire of the battery pack 100, and improve the safety of the battery pack 100. The integration of the tray 10 and the spraying device 20 simplifies the overall structure of the battery pack 100, is beneficial for reducing weight, saving space, and facilitating the production, assembly and maintenance of the battery pack 100.

[0036] According to some embodiments of the present invention, as Figure 2 and Figure 3 shown, the spray head 21 passes through the exhaust outlet 12 and extends into the smoke exhaust passage 11. A part of the spray head 21 extending into the smoke exhaust passage 11 can spray and treat the smoke before it reaches the exhaust outlet 12, which helps the spraying device 20 to contact the smoke earlier, realize the effective coverage of the degradation liquid on the smoke, and thus improve the efficiency and effect of smoke treatment. Therefore, the design of the spray head 21 passing through the exhaust outlet 12 and extending into the smoke exhaust passage 11 further enhances the processing ability of the spraying device 20 for the smoke in the battery pack 100, realizes earlier, more comprehensive and more effective smoke degradation, and thus improves the overall safety performance of the battery pack 100.

[0037] According to some embodiments of the present invention, it further includes: a battery management device, and the battery management device communicates with the spraying device 20.

[0038] The Battery Management System (BMS) is responsible for continuously monitoring various key parameters of the battery pack 100, including but not limited to the voltage, current, temperature, total voltage, total current, SOC (State of Charge), SOH (State of Health), and insulation resistance of individual cells, etc., to ensure the normal operation and safety status of the battery system. The battery management device communicates with the sprinkler device 20 to facilitate controlling the opening and closing of the sprinkler device 20, or controlling the sprinkler device 20 to perform pre-sprinkling, emergency sprinkling and other operations. The sprinkler device 20 can also feedback its own status (such as the working status of the sprinkler device 20, fault information, etc.) to the battery management device. When the battery management device detects signs of thermal diffusion inside the battery pack 100, it can quickly notify the sprinkler device 20 through the communication interface, trigger the sprinkling action, realize early intervention and rapid degradation of the smoke, and minimize the risk of thermal diffusion fire.

[0039] Therefore, the communication between the battery management device and the sprinkler device 20 is beneficial to realizing the automation of the sprinkler device 20. Through real-time data exchange and command control, it can be realized that the sprinkler device 20 quickly and effectively executes the sprinkling measures in case of emergency, ensuring the safe operation of the battery pack 100.

[0040] According to some embodiments of the present utility model, it further includes: a smoke sensor, which is arranged in the tray 10, and the smoke sensor communicates with the battery management device. When the smoke sensor detects that the smoke concentration in the battery pack 100 reaches a predetermined threshold, the battery management device controls the sprinkler device 20 to work.

[0041] The smoke sensor is installed inside the tray 10 of the battery pack 100 to detect the smoke concentration in the battery pack 100 in real time. The smoke sensor pre-sets a smoke concentration threshold. When the detected smoke concentration reaches or exceeds this threshold, the smoke sensor immediately sends a signal to the battery management device, and the battery management device timely controls the sprinkler device 20 to work to degrade the smoke.

[0042] Therefore, the communication between the smoke sensor and the battery management device constructs an intelligent system for smoke monitoring and automatic sprinkler degradation inside the battery pack 100, which can timely prevent the occurrence of thermal diffusion phenomenon in the battery pack 100, effectively reduce the risk of fire of the battery pack 100, and improve the safety of the battery pack 100.

[0043] According to some embodiments of the present utility model, as Figure 4 shown, the nozzle 21 includes: a housing 22 and a plurality of spray pipes 23. The housing 22 defines a water inlet chamber 221; the plurality of spray pipes 23 are arranged in the housing 22, and the plurality of spray pipes 23 are respectively communicated with the water inlet chamber 221.

[0044] The water inlet chamber 221 is adapted to one side of the housing 22. A plurality of spray nozzles 23 are evenly distributed on the other side of the housing 22. The plurality of spray nozzles 23 are arranged in parallel along their extending directions. One end of the plurality of spray nozzles 23 along their extending directions faces and communicates with the water inlet chamber 221, and the other end of the plurality of spray nozzles 23 along their extending directions faces the smoke exhaust passage 11. The water inlet chamber 221 is used to accommodate the degradation liquid transported from the outside to the spray head 21. Each spray nozzle 23 communicates with the water inlet chamber 221, so that the degradation liquid can smoothly flow from the water inlet chamber 221 into each spray nozzle 23 and be sprayed from the spray nozzle 23 into the smoke exhaust passage 11.

[0045] Thus, the housing 22 is used to support and protect the internal components of the spray head 21. The water inlet chamber 221 is a temporary storage area and distribution area after the degradation liquid enters the spray head 21. The arrangement of the plurality of spray nozzles 23 facilitates the spray head 21 to achieve multi-point and large-area spray coverage, effectively improving the utilization efficiency of the degradation liquid and the spray coverage range, and further enhancing the reliability of the spraying device 20.

[0046] According to some embodiments of the present invention, as Figure 4 shown, the spraying device 20 further includes: a liquid storage tank 25 and a connecting pipe 24. The liquid storage tank 25 is formed with a liquid outlet 251; the connecting pipe 24 is connected between the water inlet chamber 221 and the liquid outlet 251.

[0047] The liquid storage tank 25 is used to store the degradation liquid to be sprayed. The liquid outlet 251 is formed at one end of the liquid storage tank 25 along the third direction C of the battery pack 100. The liquid outlet 251 is the outlet for the degradation liquid to flow out of the liquid storage tank 25. The first end of the connecting pipe 24 is connected to the liquid outlet 251, and the other end of the connecting pipe 24 is connected to the water inlet of the spray head 21, forming a continuous conveying path for the degradation liquid from the liquid storage tank 25 to the spray head 21.

[0048] Thus, the design of the spraying device 20 including the liquid storage tank 25 and the connecting pipe 24 realizes the independent storage, controllable supply and effective conveyance of the degradation liquid by the spraying device 20. When thermal diffusion occurs inside the battery pack 100, the spraying device 20 can quickly and accurately supply the degradation liquid, enhancing the reliability and applicability of the spraying device 20.

[0049] According to some embodiments of the present invention, as Figure 4 shown, the spraying device 20 further includes: a movable plate 26 and a driving member 27. The movable plate 26 divides the liquid storage tank 25 into a first chamber 252 and a second chamber 253. The first chamber 252 is formed with a liquid outlet 251; the driving member 27 is connected to the movable plate 26 to drive the movable plate 26 to move between the first chamber 252 and the second chamber 253.

[0050] The movable plate 26 is disposed between the two ends of the liquid storage tank 25 along the third direction C of the battery pack 100. The movable plate 26 can move along the third direction C of the battery pack 100 within the liquid storage tank 25. The movable plate 26 serves as a movable internal partition within the liquid storage tank 25 to divide the liquid storage tank 25 into a first chamber 252 and a second chamber 253. The liquid outlet 251 communicates with the first chamber 252, and the degradation liquid is stored in the first chamber 252. The driving member 27 drives the movable plate 26 to move within the liquid storage tank 25 along the first direction A, which can change the volume ratio of the first chamber 252 and the second chamber 253. When the movable plate 26 moves towards the direction close to the liquid outlet 251, the volume of the first chamber 252 gradually decreases, and the degradation liquid stored in the first chamber 252 is pushed by the movable plate 26 and conveyed to the spray head 21 via the liquid outlet 251 and the connecting pipe 24.

[0051] Thus, the arrangement of the movable plate 26 and the driving member 27 can ensure that the degradation liquid can be supplied to the spray head 21 as needed and stably. The driving member 27 controls the movement of the movable plate 26 to control the output amount of the degradation liquid, greatly improving the adaptability, flexibility and intelligent level of the spraying device 20, and realizing the rapid response and precise treatment of the internal heat diffusion event of the battery.

[0052] According to some embodiments of the present invention, as Figure 4 shown, the driving member 27 includes a cylinder.

[0053] A cylinder is a device that uses compressed air (or other gases) to generate thrust and drives the piston rod to move linearly back and forth. A cylinder usually consists of a cylinder barrel, a piston, a piston rod, end caps, a guide sleeve and seals, etc. The cylinder is connected to the movable plate 26 through the piston rod. When the compressed gas inside the cylinder pushes the piston rod to extend or retract, it drives the movable plate 26 to move between the first chamber 252 and the second chamber 253 along the third direction C of the battery pack 100. At least part of the cylinder is disposed within the second chamber 253 and fixedly connected to the movable plate 26, and moves within the second chamber 253 along with the movable plate 26, which can make full use of the internal space of the liquid storage tank 25, reduce the overall volume of the spraying device 20, be beneficial to improving the space utilization rate inside the battery pack 100, and enhancing the integration degree of the battery pack 100.

[0054] Thus, the driving member 27 serves as the power source of the movable plate 26. The driving member 27 includes a cylinder, and the cylinder has the advantages of stable power, safety, environmental protection and convenient maintenance, which is beneficial to the stable control and precise adjustment of the driving member 27 on the movable plate 26, realizing the rapid and stable movement of the movable plate 26 within the liquid storage tank 25, and being beneficial to ensuring the long-term stable operation of the spraying device 20.

[0055] According to some embodiments of the present invention, as Figure 4As shown, the movable plate 26 includes: a plate body and a seal, and the seal is disposed between the plate body and the side wall of the liquid storage tank 25.

[0056] The plate body is the main part of the movable plate 26. The seal is arranged around the four peripheral edges of the plate body and is disposed between the edge of the plate body and the inner side wall of the liquid storage tank 25, and is used to prevent the degradation liquid from leaking from the gap between the plate body and the side wall of the liquid storage tank 25, forming a sealing interface, ensuring the internal pressure stability of the first chamber 252 and the second chamber 253, and guaranteeing the normal operation of the spraying device 20.

[0057] Thus, the internal space of the liquid storage tank 25 is separated by the plate body, the seal ensures the effective isolation between the chambers, the setting of the seal enhances the sealing effect between the movable plate 26 and the side wall of the liquid storage tank 25, prevents the degradation liquid from leaking, guarantees the stable operation of the spraying device 20, and prolongs the service life of the spraying device 20.

[0058] According to some embodiments of the present invention, as Figure 1 and Figure 5 shown, the tray 10 includes: a bottom plate 13 and a plurality of side beams 14, the plurality of side beams 14 are arranged along the circumferential direction of the bottom plate 13, and the spraying device 20 is disposed on at least one of the plurality of side beams 14.

[0059] The bottom plate 13 is disposed at the bottom of the tray 10 along the third direction C of the battery pack 100. The plurality of side beams 14 are arranged along the circumferential direction of the bottom plate 13 to form the edge structure of the tray 10. The spraying device 20 is disposed on at least one of the plurality of side beams 14, that is, the spraying device 20 can be installed on one side, two sides or multiple side beams 14 of the tray 10 to achieve effective spraying coverage of different regions inside the battery pack 100. At least one of the plurality of side beams 14 is provided with a groove, and the groove is disposed on the inner side of the side beam 14 adjacent to the center of the battery pack 100 and is recessed from a part of the inner surface of the side beam 14 in a direction away from the center of the battery pack 100. The liquid storage tank 25 of the spraying device 20 is disposed in the groove. The side beam 14 can provide support and protection for the liquid storage tank 25 of the basin seat device, and at the same time improve the utilization rate of the internal space of the side beam 14, and can reduce the overall volume of the battery pack 100.

[0060] Thus, the bottom plate 13 provides a stable bearing platform for the battery pack 100, and at the same time undertakes the functions of fixing, supporting and protecting the internal structural members of the battery pack 100. The side beams 14 provide lateral support and protection, enhancing the overall rigidity and impact resistance of the tray 10. The spraying device 20 is disposed on at least one of the plurality of side beams 14, forming an integrated and efficient protection structure for the battery pack 100.

[0061] According to some embodiments of the present invention, as Figures 1-5As shown, a plurality of side beams 14 include a first side beam 141 and a second side beam 142. The first side beam 141 and the second side beam 142 are arranged along a first direction A. At least one of the first side beam 141 and the second side beam 142 is formed with a smoke exhaust channel 11. The battery pack 100 further includes at least one battery cell module. The battery cell module is disposed between the first side beam 141 and the second side beam 142. The battery cell module includes a plurality of battery cells. The plurality of battery cells are arranged along a second direction B. The first direction A is perpendicular to the second direction B. The pressure relief valve of each battery cell is communicated with the smoke exhaust channel 11.

[0062] The first side beam 141 and the second side beam 142 are arranged in parallel at intervals along the first direction A. The first side beam 141 and the second side beam 142 extend along the second direction B. The smoke exhaust channel 11 extends along the second direction B and is formed inside at least one of the first side beam 141 and the second side beam 142. The bottom plate 13 and the plurality of side beams 14 jointly define an installation space for installing the battery cell module. The plurality of battery cells are arranged in parallel along the second direction B in the installation space, which is beneficial to improving the space utilization rate inside the battery pack 100 and increasing the capacity of the battery pack 100. The battery cells extend along the first direction A. The pressure relief valve is formed at one end of the battery cell along the first direction A adjacent to the first side beam 141 or the second side beam 142. The pressure relief valve is communicated with the smoke exhaust channel 11, so that the gas discharged from the inside of the battery cell can enter the smoke exhaust channel 11 through the pressure relief valve and be discharged through the smoke exhaust channel 11 to accelerate the gas discharge rate. The inside of the battery pack 100 is also communicated with the smoke exhaust channel 11. When thermal diffusion occurs in the battery pack 100, the generated smoke can directly enter the smoke exhaust channel 11 and be discharged or degraded through the discharge port 12.

[0063] Therefore, forming the smoke exhaust channel 11 on the side beam 14 is beneficial to realizing the effective utilization of the internal space of the side beam 14. The smoke exhaust channels 11 are centrally arranged in the side beam 14, which is convenient for daily inspection and maintenance, and can realize the efficient utilization of the internal space of the battery pack 100. Each battery cell is provided with a pressure relief valve. When thermal diffusion occurs in one or more battery cells, the generated heat and gas are released through the pressure relief valve of the battery cell. The pressure relief valve is communicated with the smoke exhaust channel 11 in the side beam 14 to ensure that the released gas can be quickly and effectively discharged outside the battery pack 100, reduce the internal pressure, and prevent the occurrence of a fire accident in the battery pack 100.

[0064] According to some embodiments of the present invention, as Figures 1-5 shown, at least one of the first side beam 141 and the second side beam 142 is formed with an opening, and the opening is formed as the smoke exhaust channel 11. The opening penetrates the side beam 14 along the second direction B. The discharge port 12 on the liquid discharge channel is formed at at least one end of the first side beam 141 and the second side beam 142 along the second direction B, forming a channel that communicates the inside of the battery pack 100 with the external environment, that is, the smoke exhaust channel 11.

[0065] Thus, by forming the smoke exhaust channel 11 by opening an opening inside the side beam 14, the internal structure of the battery pack 100 is simplified, the additional installation of a smoke exhaust pipe is avoided, which is beneficial to reducing the manufacturing cost, improving the production efficiency, and can also achieve the direct connection between the smoke exhaust channel 11 and the cell pressure relief valve, improving the smoke exhaust efficiency of the battery pack 100, enhancing the safety of the battery pack 100, and prolonging the service life of the battery pack 100.

[0066] According to some embodiments of the present invention, such as Figure 1 shown, there are multiple spray devices 20, and the multiple spray devices 20 are respectively arranged at the joints of two adjacent side beams 14.

[0067] For example, there are four spray devices 20, and the four spray devices 20 are respectively arranged at the joints of the four side beams 14 of the tray 10. A total of four discharge ports 12 are formed on the first side beam 141 and the second side beam 142 of the tray 10, which are respectively located at both ends of the first side beam 141 and the second side beam 142 along the second direction B. The nozzles 21 of the four spray devices 20 are respectively arranged at the four discharge ports 12 formed on the first side beam 141 and the second side beam 142. The degradation liquid contacts the smoke in the exhaust channel and is quickly degraded into a liquid. The liquid is stored in the side beam 14 and collected in a predetermined area to avoid secondary pollution or forming a safety hazard.

[0068] Thus, when the multiple spray devices 20 work simultaneously, they can spray the joints of multiple adjacent side beams 14 of the battery pack 100, achieving multi-point and all-round spray coverage, degrading the smoke discharged from the multiple discharge ports 12, effectively improving the degradation efficiency, avoiding smoke accumulation, and enhancing the overall safety of the battery pack 100.

[0069] The electrical equipment according to the second aspect embodiment of the present invention includes the battery pack 100 according to the above first aspect embodiment of the present invention.

[0070] According to the electrical equipment of the embodiment of the present invention, by adopting the battery pack 100 with structures such as a smoke exhaust channel 11 and a spray device 20, the overall safety of the electrical equipment can be effectively improved, enabling it to effectively respond when abnormal situations such as thermal diffusion occur in the battery pack 100, reducing the risk of the electrical equipment catching fire, ensuring the normal operation of the electrical equipment, enhancing the stability and reliability of the electrical equipment, and prolonging the service life of the electrical equipment.

[0071] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0072] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more. In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0073] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0074] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A tray, wherein the tray is formed with a smoke exhaust passage, and the smoke exhaust passage has an exhaust port; A spray device, wherein the spray device is arranged on the tray, and the spray device comprises a nozzle, a liquid storage tank, a movable plate and a driving member, wherein the nozzle is arranged toward the exhaust port of the smoke exhaust channel, the liquid storage tank is formed with a liquid outlet, the movable plate divides the liquid storage tank into a first chamber and a second chamber, the first chamber is formed with the liquid outlet, and the driving member is connected to the movable plate to drive the movable plate to move between the first chamber and the second chamber.

2. The battery pack according to claim 1, characterized in that: The nozzle extends into the smoke exhaust channel through the exhaust port.

3. The battery pack according to claim 1, characterized in that: Also includes: A battery management device communicates with the spray device.

4. The battery pack according to claim 3, characterized in that: Also includes: A smoke sensor is disposed in the tray, the smoke sensor communicates with the battery management device, and when the smoke sensor detects that the smoke concentration in the battery pack reaches a predetermined threshold, the battery management device controls the spray device to operate.

5. The battery pack according to claim 1, characterized in that: The nozzle comprises: a housing defining a water inlet chamber; A plurality of nozzles are arranged in the shell, and the plurality of nozzles are respectively connected with the water inlet chamber.

6. The battery pack according to claim 5, characterized in that: The spray device further comprises: A connecting pipe is connected between the water inlet cavity and the liquid outlet.

7. The battery pack according to claim 1, characterized in that: The driving member includes a cylinder.

8. The battery pack according to claim 1, characterized in that: The movable panel comprises: board body; A sealing member is disposed between the plate body and a side wall of the liquid storage tank.

9. The battery pack according to any one of claims 1 to 8, characterized in that: The tray comprises: Base plate; A plurality of side beams, wherein the plurality of side beams are arranged along the circumference of the bottom plate, and the spray device is arranged on at least one of the plurality of side beams; At least one of the plurality of side beams is provided with a groove, and the liquid storage tank of the spray device is arranged in the groove.

10. The battery pack according to claim 9, characterized in that: The plurality of side beams include a first side beam and a second side beam, the first side beam and the second side beam are arranged along a first direction, and at least one of the first side beam and the second side beam is formed with the smoke exhaust channel; The battery pack also includes at least one battery cell module, which is arranged between the first side beam and the second side beam. The battery cell module includes a plurality of battery cells, and the plurality of battery cells are arranged along a second direction. The first direction is perpendicular to the second direction, and the pressure relief valve of each battery cell is connected to the smoke exhaust channel.

11. The battery pack according to claim 10, characterized in that: At least one of the first side beam and the second side beam is formed with an opening, and the opening is formed as the smoke exhaust channel.

12. The battery pack according to claim 9, characterized in that: There are multiple spray devices, and the multiple spray devices are respectively arranged at the connection between two adjacent side beams.

13. An electrical equipment, characterized in that: Comprising a battery pack according to any one of claims 1-12.

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