Power storage device and power consuming device

Abstract

The utility model discloses an embodiment proposes a kind of power storage device and electric equipment.The power storage device includes box, battery cell module, valve subassembly and sealing washer.The box has accommodating cavity inside, and the box is provided with through-hole, the through-hole one end communicates the accommodating cavity, another end communicates external space;The battery cell module is set in the accommodating cavity;The sealing washer is arranged on the outer wall surface of the box, and the sealing washer is arranged around the hole of the through-hole The circumferential arrangement;The valve subassembly has mounting end and exhaust end, the mounting end is installed in the through-hole, the exhaust end extends in the direction away from the box, and in the direction perpendicular to the hole plane of the through-hole, the exhaust end exceeds the sealing washer. Therefore, the power storage device according to the embodiment of the utility model has the advantages of high environmental adaptability, good structural stability and high reliability.

Description

Technical Field

[0001] This disclosure relates to the field of new energy technology, specifically to an energy storage device and an electrical appliance having the energy storage device. Background Technology

[0002] When an energy storage device encounters abnormal gas production from its internal batteries during use, it is necessary to depressurize it.

[0003] In related technologies, the energy storage device is fixed inside the equipment compartment, and the exhaust port of the energy storage device is connected to the pressure relief port of the equipment compartment, which is equipped with a waterproof and breathable membrane, through a flexible pipeline such as a corrugated pipe. The corrugated pipe is sealed and extends out of the equipment compartment.

[0004] However, in harsh outdoor environments, the gas inside the energy storage device cannot be smoothly discharged outside the equipment compartment. Utility Model Content

[0005] In view of this, the present invention aims to provide an energy storage device and an electrical device having the energy storage device, so as to solve the problem that the gas generated inside the energy storage device cannot be effectively discharged in the prior art.

[0006] This utility model provides an energy storage device.

[0007] This utility model also provides an electrical device.

[0008] The energy storage device of this utility model embodiment includes a housing, a battery cell module, a valve assembly, and a sealing gasket. The energy storage device is disposed within the chamber, the chamber has a bottom plate with the mating hole, and the housing is mounted on the bottom plate.

[0009] The housing has a receiving cavity, and the housing has a through hole, one end of which connects to the receiving cavity and the other end of which connects to the external space; the battery cell module is disposed in the receiving cavity; the sealing gasket is disposed on the outer wall surface of the housing, and the sealing gasket is arranged circumferentially around the opening of the through hole; the valve assembly has an installation end and an exhaust end, the installation end is installed in the through hole, and the exhaust end extends away from the housing, and in a direction perpendicular to the plane of the opening of the through hole, the exhaust end extends beyond the sealing gasket.

[0010] The energy storage device of this embodiment forms a sealing layer between the base plate and the housing by circumferentially arranging sealing gaskets around the opening of the through hole. This prevents moisture and dust from outside the vehicle cabin from directly entering the cabin through the mating holes, thus avoiding corrosion of electrical components and parts inside the cabin. The sealing gaskets effectively reduce the impact of moisture and dust on the cabin, which helps to extend the overall service life of the vehicle.

[0011] Furthermore, compared to the structure of directly attaching a waterproof and breathable membrane to a corrugated pipe (where the adhesive edges of the waterproof and breathable membrane are prone to aging and delamination due to harsh external environments), the use of a valve assembly fixedly connected to the through-hole ensures that the valve assembly remains sealed under normal pressure and automatically opens to release air when pressure exceeds the limit. This effectively prevents the waterproof and breathable membrane from detaching and air leakage at the connection between the corrugated pipe and the through-hole under high vibration conditions. This increases the reliability of air release and makes it suitable for harsh environments with high vibration.

[0012] The connection method of the gasket and valve assembly allows for normal venting, while the compression and rebound of the gasket itself compensates for the relative displacement between the energy storage device and the bottom due to vibration, reducing the number of leakage points during venting (only on both sides of the gasket's thickness direction). This further increases the reliability of the energy storage device's venting in high-vibration environments.

[0013] Furthermore, in the direction perpendicular to the plane of the through hole, the exhaust end extends beyond the sealing gasket, preventing the exhaust end from being flush with or lower than the sealing gasket. During assembly, the sealing gasket may completely cover the exhaust port due to compression deformation, positional misalignment, or uneven surface, leading to blockage of the exhaust channel. Ensuring the unobstructed exhaust channel allows for more timely release of high-pressure gas.

[0014] Therefore, the energy storage device of this utility model embodiment has the advantages of high environmental adaptability, good structural stability and high reliability.

[0015] In one embodiment, and in some embodiments, the cross-section of the sealing gasket has an arcuate segment in the thickness direction.

[0016] In some embodiments, the valve assembly passes through the inner ring of the sealing gasket, and the valve assembly has a gap with the inner ring wall of the sealing gasket.

[0017] In some embodiments, the width of the sealing gasket is 3cm-10cm.

[0018] In some embodiments, the thickness of the sealing gasket is 5cm-15cm.

[0019] In some embodiments, the elastic modulus of the sealing gasket is 0.1 MPa-10 MPa.

[0020] In some embodiments, the sealing gasket is made of nitrile rubber, fluororubber, silicone rubber, EPDM rubber, neoprene rubber, polytetrafluoroethylene, polyetheretherketone, or polypropylene.

[0021] In some embodiments, the compression rate of the sealing gasket is 25%-35% under a static pressure of 100 kPa, and less than 50% under a static pressure of 120 kPa.

[0022] In some embodiments, an adhesive backing layer is provided on one side of the sealing gasket, and the sealing gasket is attached to the outer wall surface of the housing through the adhesive backing layer, wherein the peel strength of the adhesive backing layer is greater than 0.3 N / mm.

[0023] In some embodiments, the housing has an assembly port communicating with the receiving cavity at one end of the energy storage device in the height direction, and the tabs of the battery cell module are led out from the side of the battery cell module facing the assembly port. Along the height direction of the energy storage device, the through hole is located on the side of the housing near the assembly port.

[0024] In some embodiments, the housing includes a side plate with the through hole, the outer wall surface of the side plate includes a planar abutment area, the surface flatness of the planar abutment area is less than 0.5 mm, the minimum distance between the side wall of the through hole and the edge of the planar abutment area is greater than the width of the sealing gasket, and the sealing gasket is installed in the planar abutment area.

[0025] In some embodiments, the side plate has a limiting groove arranged circumferentially around the through hole, and the sealing gasket is disposed within the limiting groove, with one side of the sealing gasket protruding from the side plate in the thickness direction of the sealing gasket.

[0026] In some embodiments, the housing includes a rectangular housing formed by a bottom plate, a first end plate, a second end plate, and two side plates. The first end plate and the second end plate are disposed opposite to each other on both sides of the battery cell module along the length direction of the energy storage device, and the two side plates are disposed opposite to each other on both sides of the battery cell module along the width direction of the energy storage device.

[0027] The through hole is provided on one of the side plates.

[0028] Each of the first end plate and the second end plate is provided with a plurality of end plate sub-channels extending along the height direction of the energy storage device, and the bottom plate is provided with a bottom plate sub-channel extending along the length direction of the energy storage device.

[0029] The end plate sub-channel of the first end plate, the bottom plate sub-channel, and the end plate sub-channel of the second end plate are sequentially connected to form multiple U-shaped heat dissipation channels.

[0030] In some embodiments, the energy storage device further includes a fan assembly. Each of the first end plate and the second end plate has a ventilation hole on its outer wall surface that communicates with the end plate via a channel. The fan assembly is disposed on the outer wall surface of the first end plate, and the fan assembly is disposed corresponding to the ventilation hole of the first end plate.

[0031] The through hole is located on the side of the side plate near the first end plate.

[0032] In some embodiments, the battery cell module includes a plurality of battery cell units arranged sequentially along the width direction of the energy storage device. Each battery cell unit includes a tray and a battery cell. The tray has a receiving space for accommodating the battery cell, and the tray is in contact with one side of the battery cell in the thickness direction.

[0033] The tray has side guards, and the side guards of each tray abut against the first end plate and / or the second end plate on one side of the energy storage device along its length.

[0034] In some embodiments, the valve assembly includes a valve body, a valve core assembly, a waterproof and breathable membrane, and a valve cover. The valve body has a valve cavity, a mounting end, and an exhaust end. The valve core assembly is movably and detachably disposed within the valve cavity along the axial direction of the valve body. The valve core assembly has a valve core through hole. The waterproof and breathable membrane is sealed on the valve core through hole. The valve cover is disposed on the exhaust end of the valve body and has a valve hole.

[0035] The electrical equipment of this utility model embodiment includes a cabin and an energy storage device according to any one of the above descriptions. The energy storage device is disposed in the cabin. The cabin has a bottom plate with a mating hole. The housing is disposed on the bottom plate. The valve hole of the valve assembly is disposed opposite to the mating hole in the thickness direction of the bottom plate. The sealing gasket is sealed and filled between the bottom plate and the housing. Attached Figure Description

[0036] Figure 1 This is a perspective view of the energy storage device according to an embodiment of the present invention.

[0037] Figure 2 yes Figure 1 Enlarged view at point A.

[0038] Figure 3 yes Figure 1 Explosion diagram.

[0039] Figure 4 This is another perspective view of the energy storage device according to an embodiment of the present utility model.

[0040] Figure 5 This is a top view of the energy storage device according to an embodiment of the present invention.

[0041] Figure 6 It is a sectional view along the AA direction.

[0042] Figure 7 yes Figure 6 Enlarged view at point B.

[0043] Figure 8This is a side view of the energy storage device according to an embodiment of the present invention.

[0044] Figure 9 It is a sectional view along the BB direction.

[0045] Figure 10 This is an exploded view of the energy storage device according to an embodiment of the present invention.

[0046] Figure 11 This is another perspective view of the box body according to an embodiment of the present utility model.

[0047] Figure 12 This is a perspective view of the box body according to an embodiment of the present utility model.

[0048] Figure 13 yes Figure 12 A sectional view along the CC direction.

[0049] Figure 14 yes Figure 12 A cross-sectional view along the DD direction.

[0050] Figure 15 This is a perspective view of the box body from a bottom angle according to an embodiment of this utility model.

[0051] Figure 16 This is an exploded view of the valve assembly according to an embodiment of the present invention.

[0052] Figure 17 This is a diagram showing the assembly of the battery cell unit and the tray according to an embodiment of this utility model.

[0053] Explanation of reference numerals in the attached figures:

[0054] Energy storage device 100;

[0055] Box body 1; side panel 11; through hole 111; limiting groove 112;

[0056] Base plate 12; Base plate divided into channels 121;

[0057] First end plate 13; Second end plate 14; End plate channel 131; Ventilation hole 132;

[0058] Assembly port 101;

[0059] Battery cell module 2; Battery cell unit 21; Support plate 22; Heat-conducting plate 221; Side guard 222; Bottom fold 223;

[0060] Sealing gasket 3;

[0061] Valve assembly 4; Valve body 41; Valve core assembly 42; Waterproof and breathable membrane 43; Valve cover 44; Valve hole 45;

[0062] Fan assembly 5. Detailed Implementation

[0063] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0064] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0065] The following is for reference. Figures 1-17 The present invention will describe by way of example the energy storage device 100 and the electrical equipment having the energy storage device 100 according to embodiments of the present invention.

[0066] It should be noted that in the prior art, electrical equipment such as outdoor energy storage cabinets, base stations, automobiles, etc., the following description of the embodiments of this disclosure takes automobiles as an example, especially off-road vehicles, etc. The energy storage device 100 needs to face harsh outdoor environments and vibration and shock conditions. The exhaust pipe of the energy storage device 100 is connected to the outside of the vehicle cabin through a corrugated pipe. Due to the large amount of dust and mud in the external environment, it will escape into the flexible pipes such as the corrugated pipe, causing the corrugated pipe to be blocked, which in turn causes the gas in the energy storage device 100 to be unable to be discharged smoothly.

[0067] In addition, repeated vibrations and impacts from bumpy road sections can easily cause frequent relative displacement between the bellows and the exhaust pipe, which can lead to bellows deformation or even wear, thus affecting the sealing performance of the bellows connection. This may cause external dust and moisture to enter the cabin or the interior of the energy storage device 100, affecting the interior environment of the cabin and the service life of the energy storage device 100.

[0068] The energy storage device 100 of this utility model embodiment includes a housing 1, a battery cell module 2, a valve assembly 4, and a sealing gasket 3. The energy storage device 100 is disposed in a chamber, the chamber having a bottom plate 12 with mating holes, and the housing 1 can be disposed on the bottom plate 12.

[0069] The housing 1 has a receiving cavity, and the housing 1 is provided with a through hole 111. One end of the through hole 111 is connected to the receiving cavity, and the other end is connected to the external space. The battery cell module 2 is disposed in the receiving cavity. The sealing gasket 3 is disposed on the outer wall surface of the housing 1 and is arranged circumferentially around the opening of the through hole 111. The valve assembly 4 has an installation end and an exhaust end. The installation end is installed in the through hole 111, and the exhaust end extends away from the housing 1. In the direction perpendicular to the plane of the opening of the through hole 111, the exhaust end extends beyond the sealing gasket 3.

[0070] The energy storage device 100 of this embodiment of the invention forms a sealing layer between the base plate 12 and the housing 1 by circumferentially arranging sealing gaskets 3 around the opening of the through hole 111. This prevents moisture and dust from outside the vehicle cabin from directly entering the cabin through the mating holes, thus avoiding corrosion of electrical components and parts inside the cabin. The sealing gaskets 3 effectively reduce the impact of moisture and dust on the cabin interior. This helps to extend the overall service life of the vehicle.

[0071] Furthermore, compared to the structure of directly attaching the waterproof and breathable membrane 43 with a corrugated tube (where the adhesive edges of the waterproof and breathable membrane 43 are prone to aging and delamination due to harsh external environments), the valve assembly 4, fixedly connected to the through hole 111, maintains a seal under normal pressure and automatically opens to release air when pressure exceeds the limit. This effectively prevents the waterproof and breathable membrane 43 from detaching under high vibration conditions and air leakage at the connection between the corrugated tube and the through hole 111. This increases the reliability of air release and makes it suitable for harsh environments with high vibration.

[0072] The connection method of the sealing gasket 3 and valve assembly 4 allows for normal venting, while the compression and rebound of the sealing gasket 3 itself can compensate for the relative displacement between the energy storage device 100 and the bottom due to vibration, reducing the leakage points when the energy storage device 100 vents (mainly on both sides of the sealing gasket 3 in the thickness direction). This further increases the reliability of the energy storage device 100 venting under high vibration environments.

[0073] Furthermore, in the direction perpendicular to the plane of the through hole 111, the exhaust end extends beyond the sealing gasket 3 to prevent the exhaust end from being flush with or lower than the sealing gasket 3. During assembly, the sealing gasket 3 may completely cover the exhaust port due to compression deformation, positional displacement, or uneven surface, leading to blockage of the exhaust channel. Ensuring the unobstructed exhaust channel allows for more timely release of high-pressure gas.

[0074] Therefore, the energy storage device 100 of this utility model embodiment has the advantages of high environmental adaptability, good structural stability and high reliability.

[0075] Optionally, the other side of the sealing gasket 3 abuts against the mating hole on the base plate 12, and the valve assembly 4 passes through the mating hole.

[0076] Optionally, the valve assembly 4 may be threaded, snap-fitted, or welded into the through hole 111. For example... Figure 3 As shown, valve assembly 4 is threaded into through hole 111.

[0077] like Figure 3 and Figure 4 As shown, the cross-section of the sealing gasket 3 has an arc-shaped segment in the thickness direction. For example, the sealing gasket 3 is a circular or elliptical washer.

[0078] The energy storage device 100 of this embodiment of the invention uses an arc-shaped sealing gasket 3. During compression, the stress is evenly distributed along the circumference of the arc-shaped cross-section, achieving uniform sealing throughout the circumference regardless of whether the pressure comes from radial or axial forces, thus avoiding localized leakage. This further improves the airtightness and reliability of the connection between the vehicle compartment and the energy storage device 100 at the pressure relief port.

[0079] like Figures 1 to 4 As shown, the valve assembly 4 passes through the inner ring of the sealing gasket 3, and there is a gap between the valve assembly 4 and the inner ring wall of the sealing gasket 3.

[0080] The energy storage device 100 of this embodiment of the invention avoids completely covering the exhaust port due to possible compression deformation, positional displacement, or uneven surface of the sealing gasket 3 by inserting the valve assembly 4 through the gap inside the sealing gasket 3. This further ensures the unobstructed flow of the exhaust channel.

[0081] The width of sealing gasket 3 is 3cm-10cm.

[0082] The energy storage device 100 of this embodiment of the invention improves the sealing effect by limiting the width range of the sealing gasket 3. On the one hand, if the sealing gasket 3 is too narrow, it cannot form an effective sealing band; even minor assembly deviations or surface unevenness can lead to partial non-contact, causing moisture and dust to enter the vehicle compartment. On the other hand, if the sealing gasket 3 is too wide, the edge areas may not be sufficiently compressed when the bolts or pressure plate are applied with pre-tightening force, while the central area may be over-compressed, leading to sealing failure in the over-compressed area. Therefore, the energy storage device 100 of this embodiment of the invention improves the sealing effect by optimizing the width of the sealing gasket 3.

[0083] Optionally, the width of the sealing gasket 3 is 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm or 10cm.

[0084] The thickness of sealing gasket 3 is 5cm-15cm.

[0085] The energy storage device 100 of this embodiment of the invention, by limiting the thickness range of the sealing gasket 3, avoids the problem of edge sealing failure caused by insufficient compression in the central area and insufficient compression in the edge area due to excessive thickness of the sealing gasket 3. Furthermore, excessive thickness occupies vertical space and reduces the volumetric energy density of the battery. On the other hand, if the thickness of the sealing gasket 3 is too small, the compression and contact pressure will be insufficient, resulting in discontinuous sealing strips that cannot effectively fill the tiny gap between the casing and the base plate 12. Therefore, optimizing the thickness of the sealing gasket 3 can improve the sealing effect.

[0086] Optionally, the thickness of the sealing gasket 3 is 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 11cm, 12cm, 13cm, 14cm or 15cm.

[0087] The elastic modulus of the sealing gasket 3 is 0.1 MPa-10 MPa.

[0088] The energy storage device 100 of this embodiment of the invention, by limiting the range of the elastic modulus of the sealing gasket 3, avoids two problems. Firstly, an excessively high elastic modulus (material too "hard") results in insufficient compression under limited preload, failing to adequately fill the microscopic unevenness or assembly gaps between the battery casing and the base plate 12. Secondly, an excessively high elastic modulus leads to poor buffering and vibration damping capabilities, causing the impact force to be directly transmitted to the base plate 12 and the battery cell under vehicle vibration or collision impact. Thirdly, an excessively low elastic modulus (material too "soft") results in good initial sealing, but the resilience decreases over time, easily leading to sealing failure during later use. Therefore, optimizing the elastic modulus of the sealing gasket 3 improves the sealing effect.

[0089] Optionally, the elastic modulus of the sealing gasket 3 is 0.1 MPa, 0.5 MPa, 0.8 MPa, 1.0 MPa, 2 MPa, 3 MPa, 4 MPa, 5 MPa, 6 MPa, 7 MPa, 8 MPa, 9 MPa or 10 MPa.

[0090] Under a static pressure of 100 kPa, the compression rate of the sealing gasket 3 is 10%-35%, and under a static pressure of 120 kPa, the compression rate is less than 50%. Similarly, this setting also improves the sealing effect.

[0091] Optionally, the sealing gasket 3 is made of at least one of nitrile rubber, fluororubber, silicone rubber, EPDM rubber, neoprene rubber, polytetrafluoroethylene, polyetheretherketone and polypropylene.

[0092] An adhesive backing layer is provided on one side of the sealing gasket 3. The sealing gasket 3 is attached to the outer wall surface of the housing 1 through the adhesive backing layer, and the peel strength of the adhesive backing layer is greater than 0.3 N / mm. Therefore, the adhesive backing layer can prevent the sealing gasket 3 from slipping, thereby improving the sealing effect.

[0093] like Figure 1 and Figure 3 As shown, one end of the valve assembly 4 is fixed in the through hole 111, the valve hole 45 of the valve assembly 4 is provided on the other end of the valve assembly 4, and the other end of the valve assembly 4 can fit into the mating hole passing through the base plate 12.

[0094] The energy storage device 100 of this embodiment of the utility model has one end of the valve assembly 4 protruding from the outer wall of the housing 1 and passing through the mating hole of the base plate 12. It can be understood that the end of the valve assembly 4 with the valve hole 45 passes through the mating hole of the base plate 12, and can thus be directly exposed to the outside of the vehicle body. That is, the gas is directed to be discharged to the outside atmosphere of the vehicle, away from passengers and critical electrical systems, which greatly improves the safety of the vehicle cabin.

[0095] Furthermore, compared to the existing technology that uses bellows to discharge gas, the valve assembly 4 has a relatively short gas path, which allows for rapid release of pressure inside the energy storage device 100, reducing the possibility of a violent explosion or structural rupture due to excessive internal pressure. On the other hand, if the other end of the valve assembly 4 is too short and does not penetrate the base plate 12, the discharged gas will accumulate in the sealing gasket 3 between the base plate 12 and the housing 1, affecting the service life of the sealing gasket 3. Excessive pressure could also cause high-temperature gas to overflow from the sealing gasket 3 into the vehicle compartment, posing a serious safety hazard. The limitation that the other end of the valve assembly 4 can fit into the mating hole in the base plate 12 contributes to improved safety inside the vehicle compartment.

[0096] like Figures 1 to 4 As shown, the housing 1 has an assembly port 101 communicating with the receiving cavity at one end in the height direction of the energy storage device 100. The tabs of the battery cell module 2 are led out from the side of the battery cell module 2 facing the assembly port 101. The through hole 111 is provided in the area of ​​the housing 1 near the assembly port 101 along the height direction of the energy storage device 100. It can be understood that the valve assembly 4 is located near the tabs of the battery cell module 2.

[0097] Because the cell vent is generally located at the end where the tab leads out, that is, near the vent end of the valve assembly 4. In this embodiment of the energy storage device 100, the closer the valve assembly 4 is to the starting point of the cell's thermal runaway, the faster the venting response. The venting channel can be straight along the length of the module, with a short path and low resistance. It can quickly release pressure when thermal runaway occurs, preventing the housing 1 from cracking or exploding.

[0098] like Figure 4 and Figure 11 As shown, the housing 1 includes a side plate 11 with a through hole 111. The outer wall surface of the side plate 11 includes a planar abutment area. The surface flatness of the planar abutment area is less than 0.5 mm. The minimum distance between the side wall of the through hole 111 and the edge of the planar abutment area is greater than the width of the sealing gasket 3. The sealing gasket 3 is installed in the planar abutment area. It can be understood that the through hole 111 is located in the area near the middle of the planar abutment area.

[0099] The energy storage device 100 of this embodiment provides a relatively flat mating surface between the base plate 12 and the housing 1 by setting the through hole 111 in the planar contact area. This helps to reduce the instability of the fit between the housing 1 and the base plate 12 and avoids air leakage in the connection area caused by poor flatness of the contact surface. This further improves the sealing performance of the mating surface between the energy storage device 100 and the base plate 12.

[0100] Optionally, reinforcing ribs may also be provided on the side plate 11, and there is a gap between the sealing gasket 3 and the reinforcing ribs. The reinforcing ribs may be grid-like ribs, wavy ribs, or radial ribs. Grid-like ribs may be cross-shaped horizontal and vertical reinforcing ribs intersecting to form a grid; wavy ribs may be continuous undulating strip-shaped raised ribs; radial ribs may radiate outward from the center.

[0101] like Figures 1 to 4 As shown, the side plate 11 has a limiting groove 112, which is arranged circumferentially around the through hole 111. The sealing gasket 3 is disposed in the limiting groove 112, and one side of the sealing gasket 3 in the thickness direction protrudes outside the plane contact area.

[0102] The energy storage device 100 of this embodiment of the utility model has a limiting groove 112 provided circumferentially in the through hole 111, and the sealing gasket 3 is disposed in the limiting groove 112, which can limit and position the sealing gasket 3. This prevents the sealing gasket 3 from shifting and displacing when the vehicle is in a high-vibration environment, which helps to further improve the sealing performance of the mating surface between the energy storage device 100 and the base plate 12.

[0103] Furthermore, the sealing gasket 3 is positioned so that one side protrudes beyond the planar contact area, effectively creating an elastic buffer layer between the energy storage device 100 and the base plate 12. When encountering bumps, bottoming out, or minor collisions during vehicle operation, the sealing gasket 3 can absorb some of the impact from the base plate 12, reducing the stress directly transmitted to the housing 1 and preventing deformation or breakage of the housing 1. During the installation of the energy storage device 100, the sealing gasket 3 is uniformly compressed, forming a reliable sealing layer. This further improves the sealing performance of the mating surfaces between the energy storage device 100 and the base plate 12.

[0104] Optionally, the side plate 11 has a recessed limiting groove 112, and the peripheral wall of the through hole 111 forms an outwardly convex protrusion.

[0105] like Figures 10 to 15As shown, the housing 1 includes a rectangular housing 1 enclosed by a bottom plate 12, a first end plate 13, a second end plate 14, and two side plates 11. The first end plate 13 and the second end plate 14 are arranged opposite each other on both sides of the battery cell module 2 along the length direction of the energy storage device 100. The two side plates 11 are arranged opposite each other on both sides of the battery cell module 2 along the width direction of the energy storage device 100. A through hole 111 is provided on one of the side plates 11. Each of the first end plate 13 and the second end plate 14 is provided with a plurality of end plate sub-channels 131 extending along the height direction of the energy storage device 100. The bottom plate 12 is provided with a bottom plate sub-channel 121 extending along the length direction of the energy storage device 100. The end plate sub-channels 131 of the first end plate 13, the bottom plate sub-channels 121, and the end plate sub-channels 131 of the second end plate 14 are sequentially connected to form a plurality of U-shaped heat dissipation channels.

[0106] The energy storage device 100 of this utility model forms multiple U-shaped heat dissipation channels by sequentially connecting the end plate sub-channel 131 of the first end plate 13, the bottom plate sub-channel 121, and the end plate sub-channel 131 of the second end plate 14. This allows the cooling airflow medium to be evenly distributed in the multiple U-shaped heat dissipation channels, thereby improving the uniformity of cooling the battery cell module 2.

[0107] Optionally, the multiple U-shaped heat dissipation channels are relatively densely packed near the central region of the energy storage device 100. This helps to increase the heat dissipation effect in the central region.

[0108] Optionally, multiple heat dissipation cavities are extruded into the first end plate 13, the second end plate 14, and the bottom plate 12, and the multiple heat dissipation cavities form corresponding channels.

[0109] like Figures 10 to 15 As shown, the energy storage device 100 of this embodiment further includes a fan assembly 5. Each of the first end plate 13 and the second end plate 14 has a ventilation hole 132 communicating with the end plate channel 131 on its outer wall surface. The fan assembly 5 is disposed on the outer wall surface of the first end plate 13, and the fan assembly 5 is correspondingly disposed with respect to the ventilation hole 132 of the first end plate 13. The through hole 111 is located on the side of the side plate 11 near the first end plate 13. It can be understood that the fan assembly 5 is disposed on the side near the through hole 111.

[0110] The energy storage device 100 of this utility model embodiment, by placing the fan assembly 5 close to the through hole 111, has a relatively good heat dissipation effect on the end plate where the fan assembly 5 is installed, which can cool the gas generated by the battery cell module 2 and suppress flame propagation and secondary combustion.

[0111] like Figure 10 and Figure 17As shown, the battery cell module 2 includes a plurality of battery cell units 21 arranged sequentially along the width direction of the energy storage device 100. Each battery cell unit 21 includes a support plate 22 and a battery cell. The support plate 22 forms a receiving space for accommodating the battery cell, and the support plate 22 is attached to one side of the battery cell in the thickness direction. The support plate 22 has a side guard edge 222. The side guard edge 222 of each support plate 22 abuts against the first end plate 13 and / or the second end plate 14 on one side of the length direction of the energy storage device 100.

[0112] The energy storage device 100 of this embodiment divides the battery cell module 2 into multiple battery cell units 21 arranged sequentially along the width direction of the energy storage device 100. A support plate 22 and the battery cells can be prefabricated into standard parts. Multiple battery cells are connected as a whole through the support plate 22 to form a rigid module, preventing displacement and misalignment of the battery cells. This support plate 22 also facilitates the automated alignment, stacking, and locking processes of the battery cell units 21. This improves the production efficiency of the energy storage device 100.

[0113] In addition, the side guards 222 of each tray 22 are in thermal contact with the first end plate 13 and / or the second end plate 14 on one side of the energy storage device 100 along the length direction, which can cool each cell unit 21 and further improve the heat dissipation uniformity of the cell module 2.

[0114] Optionally, such as Figure 17 As shown, the tray 22 includes a heat-conducting plate 221, a side guard 222, and a bottom folded edge 223. The side guard 222 is bent and formed on both sides of the heat-conducting plate 221 in the first direction, and the bottom folded edge 223 is bent and formed on one end of the heat-conducting plate 221 in the height direction. The heat-conducting plate 221, the side guard 222, and the bottom folded edge 223 form a receiving cavity, and the battery cell is disposed in the receiving cavity.

[0115] The energy storage device 100 of this embodiment divides the support plate 22 into a heat-conducting plate 221, a side guard 222, and a bottom folded edge 223. The heat-conducting plate 221 can effectively dissipate heat from the battery cell. The support plate 22 directly adheres to the battery cell housing 1, forming a low thermal resistance heat conduction path, which quickly and laterally conducts the heat generated inside the battery cell, preventing heat accumulation in local areas and further improving the heat dissipation effect of the battery module. In addition, the first support plate 22 and the second support plate 22 wrap around the side of the battery cell, playing a buffering and protective role, preventing the battery cell from deforming, being damaged, or short-circuiting during vibration, collision, or compression, and improving the reliability of the energy storage device 100 system under harsh working conditions (such as electric vehicles driving on bumpy roads).

[0116] like Figure 16As shown, the valve assembly 4 includes a valve body 41, a valve core assembly 42, a waterproof and breathable membrane 43, and a valve cover 44. The valve body 41 has a valve cavity, an installation end, and an exhaust end. The valve core assembly 42 is movably disposed in the valve cavity along the axial direction of the valve body 41. The valve core assembly 42 has a valve core through hole 111. The waterproof and breathable membrane 43 is sealed on the valve core through hole 111. The valve cover 44 is disposed on the exhaust end of the valve body 41 and has a valve hole 45.

[0117] The energy storage device 100 of this utility model divides the valve assembly 4 into a valve body 41, a valve core assembly 42, a waterproof and breathable membrane 43, and a valve cover 44. This type of valve assembly 4 has the advantage of good sealing reliability.

[0118] For example, the valve cover 44 can be screwed onto the valve body 41, or the valve cover 44 can be bonded to the valve body 41, or the valve cover 44 can be welded to the valve body 41. When the pressure increases, the valve core is lifted and the air is released; when the pressure decreases, the spring returns to its original position and the valve is resealed.

[0119] Furthermore, the valve cover 44 has multiple through holes 111, and the multiple through holes 111 are arranged on the valve cover 44 at intervals along the circumference of the valve cover 44.

[0120] The electrical equipment of this utility model embodiment includes a cabin and an energy storage device 100 according to any one of the above. The energy storage device 100 is disposed in the cabin. The cabin has a bottom plate 12 with a mating hole. The box body 1 is disposed on the bottom plate 12. The valve hole 45 of the valve assembly 4 is disposed opposite to the mating hole in the thickness direction of the bottom plate 12, and the sealing gasket 3 is sealed and filled between the bottom plate 12 and the box body 1.

[0121] Therefore, the energy storage device 100 of this utility model embodiment has the advantages of high environmental adaptability, good structural stability and high reliability.

[0122] Furthermore, the valve orifice 45 of the valve assembly 4 is tilted downwards or at an angle downwards to prevent rainwater backflow.

[0123] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0124] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0125] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0126] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0127] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0128] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. 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 one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0129] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electrical energy storage device, characterized by, include: The box has a receiving cavity inside, and the box is provided with a through hole, one end of which is connected to the receiving cavity and the other end is connected to the external space; A battery cell module, wherein the battery cell module is disposed within the receiving cavity; A sealing gasket is disposed on the outer wall surface of the housing and is arranged circumferentially around the opening of the through hole; A valve assembly having a mounting end and an exhaust end, the mounting end being installed within the through hole, the exhaust end extending away from the housing and extending beyond the sealing gasket in a direction perpendicular to the orifice plane of the through hole.

2. The energy storage device according to claim 1, characterized in that, In the thickness direction, the cross-section of the sealing gasket has an arc-shaped segment; And / or, the valve assembly passes through the inner ring of the sealing gasket, and the valve assembly has a gap with the inner ring wall of the sealing gasket.

3. The energy storage device according to claim 1, characterized in that, And / or, the width of the sealing gasket is 3cm-10cm; And / or, the thickness of the sealing gasket is 5cm-15cm; And / or, the elastic modulus of the sealing gasket is 0.1 MPa-10 MPa; And / or, the material of the sealing gasket is at least one selected from nitrile rubber, fluororubber, silicone rubber, EPDM rubber, neoprene rubber, polytetrafluoroethylene, polyetheretherketone and polypropylene; And / or, under a static pressure of 100 kPa, the compression rate of the gasket is 10%-35%, and under a static pressure of 120 kPa, the compression rate of the gasket is less than 50%. And / or, the sealing gasket is attached to the outer wall of the housing by an adhesive backing layer, the peel strength of the adhesive backing layer being greater than 0.3 N / mm.

4. The energy storage device according to claim 1, characterized in that, The housing has an assembly port communicating with the receiving cavity at one end of the energy storage device in the height direction. The electrode tab of the battery cell module is led out from the side of the battery cell module facing the assembly port. Along the height direction of the energy storage device, the through hole is located on the side of the housing close to the assembly port. And / or, the housing includes a side plate with the through hole, the outer wall surface of the side plate includes a planar abutment area, the surface flatness of the planar abutment area is less than 0.5 mm, the minimum distance between the side wall of the through hole and the edge of the planar abutment area is greater than the width of the sealing gasket, and the sealing gasket is installed in the planar abutment area.

5. The energy storage device according to claim 1, characterized in that, The housing includes a side plate with the through hole, the side plate having a limiting groove arranged circumferentially around the through hole, and a sealing gasket disposed within the limiting groove. In the thickness direction of the sealing gasket, one side of the sealing gasket protrudes from the side plate.

6. The energy storage device according to claim 1, characterized in that, The enclosure includes a rectangular enclosure formed by a bottom plate, a first end plate, a second end plate, and two side plates. The first end plate and the second end plate are arranged opposite to each other on both sides of the battery cell module along the length direction of the energy storage device, and the two side plates are arranged opposite to each other on both sides of the battery cell module along the width direction of the energy storage device. The through hole is provided on one of the side plates; Each of the first end plate and the second end plate is provided with a plurality of end plate sub-channels extending along the height direction of the energy storage device, and the bottom plate is provided with a bottom plate sub-channel extending along the length direction of the energy storage device. The end plate sub-channel of the first end plate, the bottom plate sub-channel, and the end plate sub-channel of the second end plate are sequentially connected to form multiple U-shaped heat dissipation channels.

7. The energy storage device according to claim 6, characterized in that, It also includes a fan assembly. Each of the first end plate and the second end plate has a ventilation hole on its outer wall surface that communicates with the end plate through a channel. The fan assembly is disposed on the outer wall surface of the first end plate, and the fan assembly is disposed corresponding to the ventilation hole of the first end plate. The through hole is located on the side of the side plate near the first end plate.

8. The energy storage device according to claim 6, characterized in that, The battery cell module includes a plurality of battery cell units arranged sequentially along the width direction of the energy storage device. Each battery cell unit includes a tray and a battery cell. The tray forms a receiving space to receive the battery cell, and the tray is in contact with one side of the battery cell in the thickness direction. The tray has side guards, and the side guards of each tray abut against the first end plate and / or the second end plate on one side of the energy storage device along its length.

9. The energy storage device according to any one of claims 1-8, characterized in that, The valve assembly includes a valve body, a valve core assembly, a waterproof and breathable membrane, and a valve cover. The valve body has a valve cavity, a mounting end, and an exhaust end. The valve core assembly is movably and detachably disposed within the valve cavity along the axial direction of the valve body. The valve core assembly has a valve core through hole. The waterproof and breathable membrane is sealed on the valve core through hole. The valve cover is disposed on the exhaust end of the valve body and has a valve hole.

10. An electric device, characterized by The device includes a cabin and an energy storage device according to any one of claims 1-9, wherein the energy storage device is disposed in the cabin, the cabin has a bottom plate with a mating hole, the housing is disposed on the bottom plate, the valve hole of the valve assembly is disposed opposite to the mating hole in the thickness direction of the bottom plate, and the sealing gasket is sealed and filled between the bottom plate and the housing.

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