Battery tray, battery tray assembly, battery assembly and electric equipment

Abstract

The utility model discloses a battery tray, a battery tray assembly, a battery assembly and electric equipment, the battery tray comprises a battery tray body, a mounting part is arranged at the bottom of the battery tray body, the mounting part comprises a buffer part and a connecting part, and the buffer part is arranged on at least one side of the mounting part along a first direction; the connecting part is used for being connected with a protection plate. When the electric equipment encounters an obstacle when advancing towards the first direction, and the obstacle and the bottom of the battery pack rub each other, the obstacle scrapes the buffer part firstly, the collision between the obstacle and the mounting part transits from the buffer part to the connecting part, and the connecting part can be prevented from being instantly scraped off by the obstacle under the buffer of the buffer part; therefore, the reliability and the safety performance of the battery tray are improved, and the problems of sealing failure of the battery pack caused by breakage of the connecting part of the battery pack, water entering the battery pack and the like are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, and more particularly to a battery tray, a battery tray assembly, a battery assembly, and an electrical equipment. BACKGROUND

[0002] The power battery of a new energy vehicle is usually installed at the bottom of the vehicle. The tray and the guard plate of the power battery are fixedly connected through a fixing column. When the bottom of the vehicle encounters an obstacle, the obstacle is scraped from front to back. When the obstacle scratches the guard plate, the impact force is transmitted to the fixing column through the guard plate. The faster the vehicle travels, the greater the impact force of the obstacle. A larger impact force is easy to break the fixing column, thereby causing the sealing failure of the battery pack and leading to the water ingress of the power battery. CONTENT OF THE UTILITY MODEL

[0003] In order to solve at least one problem existing in the prior art, the present application provides a battery tray, a battery tray assembly, a battery assembly, and an electrical equipment.

[0004] The present application provides a battery tray, which comprises a tray body, at least one mounting portion is arranged at the bottom of the tray body, the mounting portion comprises a connecting portion and a buffer portion, the buffer portion is arranged on at least one side of the mounting portion along a first direction, and the connecting portion is used for connecting with a guard plate.

[0005] In some embodiments, the buffer portion is connected to the tray body and the connecting portion.

[0006] In some embodiments, along the first direction, the height of the buffer portion away from the tray body gradually increases or gradually decreases.

[0007] In some embodiments, the buffer portion comprises a first surface, the first surface is away from the tray body, the first surface comprises a first end and a second end, the first end is connected to the tray body, and the second end is connected to the connecting portion.

[0008] In some embodiments, the first surface is at least one of a plane, a curved surface, and a curved surface.

[0009] In some embodiments, the included angle between the line connecting the first end and the second end and the plane on which the bottom of the tray body is located is an acute angle.

[0010] In some embodiments, the included angle is α, and the value range of α is 3°≤α≤15°.

[0011] In some embodiments, the connecting portion comprises a second surface facing away from the tray body, and a height difference exists between the second surface and the bottom of the tray body in a second direction; the second end extends to the second surface, and the first direction and the second direction intersect.

[0012] In some embodiments, the height difference is h1, and h1 is in a range of 3mm≤h1≤12mm.

[0013] In some embodiments, the tray body comprises a bottom plate and a structural beam, the structural beam is arranged in the bottom plate and fixedly connected with the bottom plate, and the mounting portion is connected with the structural beam.

[0014] In some embodiments, the bottom plate is provided with a flow channel for a fluid heat exchange medium, and the flow channel is located on at least one side of the structural beam in a third direction, and the third direction intersects the first direction.

[0015] The application also provides a battery tray assembly comprising a protective plate and a battery tray provided by the application, and the protective plate is connected to a side of the connecting portion facing away from the tray body.

[0016] In some embodiments, the battery tray assembly further comprises a buffer member arranged between the tray bottom and the protective plate.

[0017] In some embodiments, the buffer member comprises third and fourth surfaces opposite to each other, the third surface is adapted to the bottom surface of the tray body and abuts against each other, and / or the fourth surface is adapted to the surface of the protective plate facing the tray body and abuts against each other.

[0018] In some embodiments, the buffer member is provided with a relief hole, and the connecting portion is arranged in the relief hole and fixedly connected with the protective plate.

[0019] In some embodiments, the protective plate comprises two protective plates and at least one support member, and the support member is clamped between the two protective plates.

[0020] In some embodiments, the protective plate is a non-metal member, and the support member is a metal member.

[0021] In some embodiments, the thickness h2 of the protective plate is in a range of 0.6≤h2≤1.2mm.

[0022] In some embodiments, the thickness h3 of the support member is in a range of 0.6≤h3≤1.2mm.

[0023] In some embodiments, the protective plate further comprises a plurality of adhesive members, and the adhesive members are arranged between the protective plate and the support member and respectively adhere the protective plate and the support member.

[0024] In some embodiments, the thickness h4 of the adhesive ranges from 0.1 to 0.3 mm.

[0025] In some embodiments, the protective plate comprises a plurality of supports, and the plurality of supports are arranged in the first direction and / or the plurality of supports are arranged in a third direction, and the first direction and the third direction are intersected.

[0026] In some embodiments, the protective plate further comprises a filler, and the filler is filled between two protective plates and / or at least part of the filler is filled between the plurality of supports.

[0027] In some embodiments, the support is provided with a plurality of lightening holes extending in the second direction, and the plurality of lightening holes are arranged in the second direction.

[0028] In some embodiments, the lightening holes extend through the support in the second direction.

[0029] In some embodiments, the shape of the cross section of the lightening hole perpendicular to the second direction is at least one of a circle and an ellipse, or the shape of the cross section comprises a transition round corner.

[0030] In some embodiments, the lightening hole comprises a plurality of first lightening holes, the shape of the cross section of the first lightening hole perpendicular to the second direction is a circle, the first lightening hole has a first diameter d1, and the plurality of first lightening holes are arranged in the first direction and / or the third direction.

[0031] In the first direction and / or the third direction, the distance L1 between the first centers of two adjacent first lightening holes ranges from 1.5d1 to 3d1.

[0032] The first direction and the third direction form an included angle, and the first direction and the third direction are both perpendicular to the second direction.

[0033] In some embodiments, the lightening hole further comprises a plurality of second lightening holes, the plurality of second lightening holes are arranged in the first direction and / or the third direction, and the plurality of second lightening holes are arranged in the second direction.

[0034] In some embodiments, the shape of the cross section of the second lightening hole perpendicular to the second direction is a circle, the second lightening hole has a second diameter d2, and in the first direction and / or the third direction, the distance L2 between the second centers of two adjacent second lightening holes ranges from 1.5d2 to 3d2.

[0035] In some embodiments, the second weight-reducing hole is arranged between two of the first weight-reducing holes.

[0036] In some embodiments, the first direction and the third direction are perpendicular, the second weight-reducing hole is arranged between four of the first weight-reducing holes, and the distance between the second hole center and each of the four adjacent first hole centers is equal.

[0037] In some embodiments, the weight-reducing hole is circular in shape in cross section in the second direction, and the diameter d of the circle ranges from 5mm to 15mm.

[0038] In some embodiments, the connecting portion is provided with a mounting hole extending in the second direction, the guard plate is provided with a through hole corresponding to the mounting hole, and the through hole penetrates the guard plate in the second direction.

[0039] The battery tray assembly further comprises a fastener fastened to the mounting hole through the through hole.

[0040] In some embodiments, the guard plate is provided with a protruding portion corresponding to the connecting portion, the protruding portion protrudes towards the tray body and forms a recess, the through hole is arranged in the protruding portion, and the fastener is at least partially arranged in the recess.

[0041] In some embodiments, in a projection plane perpendicular to the second direction, the orthographic projection of the through hole and the orthographic projection of the support member are offset.

[0042] The application further provides a battery assembly, characterized in that it comprises the battery tray assembly provided by the application, the side of the tray body away from the mounting portion is provided with a receiving cavity, and an electric cell assembly is received in the receiving cavity.

[0043] In some embodiments, the battery assembly further comprises a cover plate adapted to close the receiving cavity.

[0044] In some embodiments, in a projection plane perpendicular to the second direction, the orthographic projection of the electric cell assembly is within the orthographic projection of the support member of the guard plate.

[0045] The application further provides a power consumption device, characterized in that it comprises the battery assembly provided by the application.

[0046] The battery tray of the present application sets a mounting portion on the bottom of the tray body, the mounting portion includes a buffer portion and a connecting portion, the buffer portion is set on at least one side of the mounting portion along the first direction, and the connecting portion is used for connecting with the guard plate. When the electric device encounters an obstacle in the first direction, the obstacle and the bottom of the battery pack are scratched, the obstacle is first scraped to the buffer portion, the collision between the obstacle and the mounting portion is transferred from the buffer portion to the connecting portion, and the connecting portion can be avoided from being scraped off by the obstacle instantaneously under the buffering of the buffer portion, so as to improve the reliability and safety performance of the battery tray, avoid the battery pack from causing the sealing failure of the battery pack due to the fracture of the connecting portion, and further avoid the problem of water entering the battery pack.

[0047] Additional aspects and advantages of the embodiments of the present application will be in part apparent and in part pointed out hereinafter in the description of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0048] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the description of the embodiments, taken in conjunction with the following drawings in which:

[0049] Figure 1 is a schematic view of the bottom structure of the tray body of some embodiments of the present application;

[0050] Figure 2 is a schematic view of the bottom structure of the tray body of some embodiments of the present application;

[0051] Figure 3 is a schematic view of the tray body of some embodiments of the present application;

[0052] Figure 4 is an exploded schematic view of the battery tray assembly of some embodiments of the present application;

[0053] Figure 5 is a schematic view of the buffer member of some embodiments of the present application;

[0054] Figure 6 is an exploded schematic view of the guard plate of some embodiments of the present application;

[0055] Figure 7 is a schematic view of the guard plate of some embodiments of the present application;

[0056] Figure 8 is a schematic view of the guard plate of some embodiments of the present application;

[0057] Figure 9 is a schematic view of the support member of some embodiments of the present application;

[0058] Figure 10 is a schematic view of the support member of some embodiments of the present application;

[0059] Figure 11 is an exploded schematic view of a battery assembly according to some embodiments of the present application.

[0060] Explanation of main element symbols:

[0061] 100 - tray body; 101 - tray bottom; 110 - mounting portion; 111 - buffer portion; 1111 - first surface; 1113 - first end; 1115 - second end;

[0062] 112 - connecting portion; 1121 - second surface; 1122 - mounting hole;

[0063] 120 - structural beam; 130 - flow channel;

[0064] 10 - battery tray assembly; 200 - guard plate; 210 - protection plate; 220 - support; 230 - filler; 240 - adhesive; 250 - protrusion; 251 - through hole; 223 - weight-reducing hole; 221 - first weight-reducing hole, 222 - second weight-reducing hole;

[0065] 300 - buffer; 301 - avoidance hole; 400 - fastener;

[0066] 1000 - battery assembly; 1001 - cover plate. DETAILED DESCRIPTION

[0067] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and letters throughout the several views denote the same or like elements or components. The embodiments described below are examples of implementations of the present application and are not intended to be limiting of the present application.

[0068] The power battery of a new energy vehicle is usually installed at the bottom of the vehicle. The tray and guard plate of the power battery are fixedly connected through a fixing column. When the bottom of the vehicle encounters an obstacle, the obstacle is scraped from front to back. When the obstacle scratches the guard plate, the impact force is transmitted to the fixing column through the guard plate. The faster the vehicle travels, the greater the impact force of the obstacle. A greater impact force is easy to scrape off the fixing column, thereby causing the sealing failure of the battery pack and causing the power battery to be flooded and other problems.

[0069] To address the aforementioned issues, this patent proposes a battery tray comprising a tray body with at least one mounting portion at its bottom. The mounting portion includes a connecting portion and a buffer portion. The connecting portion is used to connect with a protective plate, and the buffer portion is located on at least one side of the mounting portion along a first direction. When the electrical device travels in the first direction and encounters an obstacle, if the obstacle scrapes against the bottom of the battery pack, the obstacle first scrapes against the buffer portion. The collision between the obstacle and the mounting portion transitions from the buffer portion to the connecting portion. The buffering effect of the buffer portion prevents the connecting portion from being instantly broken by the obstacle, thereby improving the reliability and safety performance of the battery tray and preventing the battery pack from failing to seal due to a broken connecting portion, which could lead to water ingress into the battery pack.

[0070] When the moving device moves in the first direction, it may also move away from the first direction. For example, a car may be traveling in the first direction or reversing away from the first direction. In this case, the connecting part may be impacted by obstacles on both sides along the first direction. Therefore, buffer parts can be provided on both sides of the mounting part along the first direction. When the moving device moves in or away from the first direction, the buffer parts on both sides can protect the connecting part from the instantaneous impact of obstacles, thereby reducing the risk of the connecting part being broken by the instantaneous impact force of obstacles.

[0071] In some embodiments, the buffer is connected to the tray body and the connecting part. The connection between the buffer and the tray body and the connecting part can make the replacement money more secure and better withstand the impact from obstacles, further ensuring the safety performance of the connecting part.

[0072] In some embodiments, the height of the buffer portion away from the tray body gradually increases or decreases along the first direction. When the electrical equipment travels along the first direction, if it encounters an obstacle with an impact direction opposite to the first direction, and the height of the buffer portion away from the tray body gradually increases along the first direction, the buffer portion can gradually increase its height to mitigate the impact force of the obstacle when it scrapes against it. This allows the impact force to be largely absorbed and reduced, further reducing the impact force of the obstacle scraping against the connection. This further prevents the connection from being instantly broken by the obstacle, thereby improving the reliability and safety performance of the battery tray and preventing problems such as battery pack sealing failure due to connection breakage, which could lead to water ingress into the battery pack.

[0073] In some embodiments, the height of the buffer portion away from the tray body can also gradually decrease along the direction of the impact force of the obstacle, that is, the buffer portion will bear the instantaneous impact force of the obstacle, and when the height of the obstacle away from the tray bottom is greater than the height of the connecting portion away from the tray bottom, the obstacle and the buffer portion can not collide with the connecting portion after the collision, avoiding the contact between the connecting portion and the obstacle. If the height of the obstacle away from the tray bottom is not greater than the height of the connecting portion away from the tray bottom, the buffer portion can also reduce the impact force of the obstacle to some extent, so that the impact force of the obstacle and the connecting portion is reduced, and the connecting portion is protected from being broken by the obstacle.

[0074] The content of the present application will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the content of the present application.

[0075] In some embodiments, the battery tray includes a tray body 100. Please refer to Figures 1-3 The tray body 100 is provided with a receiving cavity for accommodating the battery cell assembly, and the tray bottom 101 is provided with a mounting portion 110 including a buffer portion 111 and a connecting portion 112.

[0076] The buffer portion 111 is provided with a first surface 1111 including a first end 1113 and a second end 1115, the first end 1113 is connected with the tray bottom 101, and the second end 1115 is connected with the connecting portion 112. Through the connection with the tray bottom 101 and the connecting portion 112, the buffer portion 111 can be more firm, and can better receive the impact from the obstacle, further ensuring the safety performance of the connecting portion.

[0077] The connecting portion 112 is provided with a second surface 1121 away from the tray bottom 101, and the second surface 1121 has a height difference with the tray bottom 101 in the second direction Z; the second end 1115 is connected with the connecting portion 112 and extends to the second surface 1121, and the first surface 1111 is connected with the second surface 1121. After the obstacle scratches the first surface 1111, the obstacle will transition from the first surface 1111 to the second surface 1121, so that the connecting portion 112 receives the impact force of the obstacle more smoothly, further reducing the possibility of the connecting portion 112 being scraped off. The first direction X and the second direction Z intersect.

[0078] In some embodiments, if the distance between the second surface 1121 and the tray bottom 101 is too high, the obstacle will be more likely to be scraped off when scratching, and if the distance is too low, the connection between the tray body 100 and the guard plate 200 will not be firm enough. In some embodiments, the height difference between the second surface 1121 and the tray bottom 101 in the second direction Z is h1, and the value of h1 is in the range of 3mm≤h1≤12mm, so that the mounting portion 110 is not easy to be scraped off by the obstacle, and at the same time, the connection between the tray body 100 and the guard plate 200 is more firm and reliable.

[0079] The included angle between the line connecting the first end 1113 and the second end 1115 and the plane on which the tray bottom 101 is located is an acute angle, so that the first surface 1111 becomes an inclined surface relative to the tray bottom 101. When the obstacle and the vehicle bottom are scratched, the obstacle scratches the first surface 1111 of the buffer portion 111 first, and then scratches the second surface 1121, avoiding that the connecting portion 112 is instantly scraped off by the obstacle, thereby improving the reliability and safety performance of the battery assembly, avoiding that the battery pack causes sealing failure due to the fracture of the connecting portion, and further causing the battery pack to be waterlogged and other problems.

[0080] The included angle between the line connecting the first end 1113 and the second end 1115 and the plane on which the tray bottom 101 is located is an acute angle, so that the first surface 1111 becomes an inclined surface relative to the tray bottom 101. When the obstacle and the vehicle bottom are scratched, the obstacle scratches the first surface 1111 of the buffer portion 111 first, and then scratches the second surface 1121, avoiding that the connecting portion 112 is instantly scraped off by the obstacle, thereby improving the reliability and safety performance of the battery assembly, avoiding that the battery pack causes sealing failure due to the fracture of the connecting portion, and further causing the battery pack to be waterlogged and other problems.

[0081] In some embodiments, the first surface 1111 can be at least one of a plane, an arc surface, and a curved surface. Figure 3 The first surface 1111 is a plane, and in some embodiments, the first surface 1111 can also be an arc surface convex away from the tray bottom 101, or an arc surface concave toward the tray bottom 101, or the first surface 1111 can also be a wave-shaped or S-shaped curved surface. As long as the first surface 1111 is an inclined surface that can weaken the impact force of the obstacle, the effect of weakening the impact force of the obstacle can be achieved, so that the connecting portion 120 is not easily scraped off when the obstacle scratches the connecting portion 120.

[0082] In some embodiments, the tray body 100 comprises a tray bottom plate 102 and a structural beam 120, the structural beam 120 is arranged in the bottom plate 102 and fixedly connected with the bottom plate 102, and the tray bottom 101 is the side of the bottom plate 102 away from the accommodation cavity. The mounting portion 110 is connected to the structural beam 120. In order to have product competitiveness, the existing new energy vehicles usually set larger power batteries, and set the power batteries at the bottom of the vehicle. In order to make the vehicle have enough chassis height, the power battery is usually set to be long and wide, and the height is relatively low. The cell assembly is arranged in the accommodation cavity of the tray body 100, and the cell assembly usually has a large weight. If the structural beam is not arranged to support the entire tray, the tray body 100 is prone to downward sagging under the weight pressure of the cell assembly. The structural beam 120 can support and fix the entire battery tray, and the mounting portion 110 arranged at the structural beam 120 has stronger structural strength and is more resistant to collision than other parts of the tray bottom 101 in the second direction Z.

[0083] In some embodiments, the mounting portion 110 is preferably arranged at the structural beam 120. Please refer to Figure 1 and Figure 2 When the vehicle drives in the driving direction and encounters an obstacle, the obstacle is easy to scratch the mounting portion 110. At this time, the obstacle scratches the first surface 1111 first, and the impact force of the scratch is transferred from the first surface 1111 to the second surface 1121, so that the mounting portion 110 is not easy to be scratched off. It should be noted that the mounting portion 120 can also be arranged at other positions of the tray bottom 101. The mounting portion 120 is arranged to connect the tray bottom 101 and the guard plate 200. In some embodiments, in order to increase the connection strength of the tray bottom 101 and the guard plate 200, the mounting portion 120 can be arranged at other positions of the tray bottom 101, which is not limited herein.

[0084] In some embodiments, the tray bottom 101 is provided with a flow channel 130, and the flow channel 130 is used for fluid heat exchange medium. When the temperature of the cell assembly is too high, the fluid heat exchange medium in the flow channel 130 can cool the cell assembly. The flow channel 130 is located on at least one side of the structural beam 120 along the second direction Z, and the second direction Z intersects the first direction X.

[0085] In general, in order to better cool the cell assembly, the flow channel is arranged on both sides of the structural beam 120 along the second direction Z to increase the area of the flow channel.

[0086] The application also provides a battery tray assembly, which comprises the battery tray provided by the application and a guard plate. The guard plate is connected to the side of the connecting portion away from the tray body. When the battery tray assembly is installed at the bottom of the vehicle, the guard plate and the battery tray are connected, which can block various obstacles encountered during driving and improve the safety performance of the battery assembly.

[0087] The content of the present application will be described in detail below in conjunction with the drawings, so that those skilled in the art can have a more clear and detailed understanding of the content of the present application.

[0088] In some embodiments, the battery tray assembly further comprises a buffer. Please refer to Figure 4 The battery tray assembly 10 comprises a tray body 100, a guard plate 200, and a buffer 300. The buffer 300 is arranged between the tray body 100 and the guard plate 200. When the guard plate 200 is impacted, the buffer 300 can provide buffering for the tray body 100, so that the tray body 100 is not easily damaged by the impact force.

[0089] In some embodiments, please refer to Figure 5 The buffer 300 comprises third surfaces 303 and fourth surfaces 304 opposite to each other. The third surfaces 303 are adapted to the tray bottom 101 and are in close contact with each other, and / or the fourth surfaces 304 are adapted to the surfaces of the guard plate 200 facing the tray body and are in close contact with each other. When the tray bottom 101 is provided with flow channels 130, the third surfaces 303 can be provided with a profile structure of the flow channels 130, so that the third surfaces 303 and the flow channels 130 are in complete contact. The complete contact not only can reduce the height of the battery tray assembly, so that the chassis of the vehicle is higher and the product competitiveness is improved, but also can make the buffer 300 provide better protection for the tray bottom 101, so that the flow channels 130 are not easily damaged by obstacles.

[0090] In some embodiments, please refer to Figure 5 and Figure 10 The buffer 300 is provided with a avoiding hole 301, and the mounting portion 110 passes through the avoiding hole 301 to achieve the fastening connection with the guard plate 200.

[0091] In some embodiments, the buffer 300 can also not be provided with the avoiding hole, and the mounting portion 110, the buffer 300, and the guard plate 200 are directly fixedly connected, as long as the fixed connection of the mounting portion 110 and the guard plate 200 can be achieved.

[0092] In some embodiments, when the guard plate 200 or the tray bottom 101 is designed to bear the function of the buffer 300, that is, a buffer portion is arranged on the side of the guard plate 200 close to the tray bottom 101 or on the side of the tray bottom 101 close to the guard plate 200, at this time, the buffer 300 can be cancelled, and the battery tray assembly is only composed of the tray bottom 101 and the guard plate 200.

[0093] In some embodiments, please refer to Figures 6-9The protection plate 200 comprises two protection plates 210 and a plurality of support pieces 220, the support pieces 220 are clamped between the two protection plates 210, the plurality of support pieces 220 are arranged at intervals in the first direction X and / or the plurality of support pieces 220 are arranged at intervals in the third direction Y, the first direction X and the third direction Y intersect. The support pieces 220 can improve the rigidity of the protection plate 200, so that the protection plate can better withstand the impact force from the obstacle, and the support pieces 220 can provide support for the battery cell assembly. The protection plate 210 can provide a buffering function for the support pieces 220 and the buffer 300, and the protection plate 210 can offset part of the impact from the obstacle, thereby improving the safety performance of the battery tray assembly.

[0094] In some embodiments, referring to Figures 6-9 The protection plate 200 further comprises a filling piece 230, the filling piece 230 is at least partially arranged between the plurality of support pieces 220, and / or the filling piece 230 is arranged between the two protection plates 210. The filling piece 230 not only makes the connection of the two protection plates more stable, but also makes the support pieces 220 more stable in the direction perpendicular to the first direction.

[0095] In some embodiments, after the protection plate 210 and the support piece 220 are clamped, molten resin is injected between the two protection plates 210 to form the filling piece 230, and the material of the filling piece 230 can be resin.

[0096] In some embodiments, only one support piece 220 can be provided, and the support piece 220 is completely filled between the two protection plates 210 to form the protection plate 200, at this time the protection plate 200 has higher anti-collision performance, but is not easy to connect with the tray bottom plate 101, this embodiment is also within the protection scope of the present application, and will not be described here.

[0097] In some embodiments, the protection plate 200 can also be provided with only two protection plates 210 and a plurality of support pieces 220, at this time the support piece 200 can move in the direction perpendicular to the second direction Z, but this scheme can also provide certain anti-collision ability when the obstacle and the protection plate rub.

[0098] In some embodiments, the protection plate 200 further comprises an adhesive piece 240, the adhesive piece 240 is arranged between the protection plate 210 and the support piece 220. Referring to Figure 6 The protection plate 210 and the support piece 220 are fixedly connected through the adhesive piece 240, and the adhesive piece 240 can be an adhesive material such as glue. At this time, the thickness of the filling piece 230 is equal to the sum of the thicknesses of the two adhesive pieces 240 and the thickness of the support piece 220.

[0099] In some embodiments, the thickness of the adhesive 240 is h4, and the thickness of the adhesive 240 ranges from 0.1 to 0.3 mm. If the thickness of the adhesive 240 is too thick, the height of the protective plate will be occupied. If the thickness of the adhesive 240 is not thick enough, the adhesive between the protective plate 210 and the support 220 will not be strong enough, and the support 220 will be loose.

[0100] In some embodiments, the support 220 is provided with a plurality of weight-reducing holes 223 extending along the second direction Z, and the weight-reducing holes 223 are arranged at intervals. The weight-reducing holes 223 can extend through the support 220 along the second direction Z, or the weight-reducing holes 223 can not extend through the support 220. The purpose of providing the weight-reducing holes 223 is to ensure that the support 220 has sufficient support strength while reducing the weight of the support 220. When the weight-reducing holes 223 do not extend through the support 220, the weight of the support 220 can be reduced to some extent, and the support performance is also good.

[0101] In some embodiments, the weight-reducing holes 223 extend through the support 220, so that the weight of the support 220 can be reduced to the greatest extent. Please refer to Figures 6-9 The weight-reducing holes 223 are circular in the cross section perpendicular to the second direction Z, so that the support 220 has good support strength in the second direction Z.

[0102] In some embodiments, the weight-reducing holes 223 can also be elliptical in the cross section perpendicular to the second direction Z, or the cross section shape includes a transition round corner. It should be noted that if the cross section shape has an angle, for example, when the cross section shape is square, the right angle will weaken the support performance of the support 220. Therefore, if the support 220 needs to have good support performance in the second direction Z, the cross section shape needs to be provided with a transition round corner to avoid the damage of the angle to the support performance of the support 220.

[0103] In some embodiments, the weight-reducing holes 223 are circular holes, and the weight-reducing holes 223 have a diameter d in the cross section shape perpendicular to the second direction Z. If the diameter d is too long, the hole diameter of the weight-reducing hole will be too large, which will result in insufficient support capacity of the protective plate 220 in the second direction Z, and the support 220 will be easily deformed when the obstacle hits the protective plate 200. If the diameter d is too small, the weight of the support 220 cannot be reduced better. Therefore, the diameter d of the weight-reducing hole 220 in the cross section shape perpendicular to the second direction Z ranges from 5 mm to 15 mm.

[0104] In some embodiments, the weight-reducing holes 223 include first weight-reducing holes 221 arranged at intervals. Please refer to Figure 9The first lightening holes 221 are arranged along the first direction X and / or the third direction Y, and the first direction X and the third direction Y are perpendicular to each other. The first lightening holes 221 have a first diameter d1 and a first hole center, which refers to the geometric center of the first lightening hole 221. Along the first direction X and the third direction Y, the distance L1 between the first hole centers of two adjacent first lightening holes 221 satisfies 1.5d1≤L1≤3d1, so that the support 220 can be lighter to a greater extent while having good structural strength. It should be noted that the first direction X, the third direction Y and the second direction Z are perpendicular to each other.

[0105] In some embodiments, the support 220 further comprises second lightening holes 222, which are arranged between the first lightening holes 221 and are arranged along the first direction X and / or the third direction Y.

[0106] The second lightening holes 222 have a second diameter d2 and a second hole center, which refers to the geometric center of the second lightening hole 222. Along the first direction X and the third direction Y, the distance L2 between the second hole centers of two adjacent second lightening holes 221 satisfies 1.5d2≤L2≤3d2, so that the support 220 can be lighter to a greater extent while having good structural strength.

[0107] In some embodiments, the second lightening holes 222 are arranged between four first lightening holes 221, as shown in FIG. 2B. Figure 9 The distance L3 between the second lightening hole 222 and the four first lightening holes 221 adjacent thereto is equal. It should be noted that the distance between the support 222 and the four first lightening holes 221 adjacent thereto can also be unequal, in which case the structural strength of the support 220 will be reduced, but the support 220 can still provide good support force for the tray.

[0108] In some embodiments, the first diameter d1 and the second diameter d2 can be equal or unequal, depending on the support strength required by the support 220 in the embodiment, which is not limited here.

[0109] In some embodiments, in order to make the protective plate 210 provide sufficient buffering effect without making the thickness of the protective plate too thick, the thickness of the protective plate 210 is h2, and the value range of h2 is: 0.6≤h2≤1.2mm.

[0110] In some embodiments, in order to make the support 220 provide sufficient support force without making the thickness of the support 220 too thick, the thickness of the support 220 is h3, and the value range of h3 is: 0.6≤h3≤1.2mm.

[0111] In some embodiments, the protection plate 210 is a non-metal piece, and the support 220 is a metal piece. The metal piece is rigid and can provide sufficient support, and the non-metal piece is soft and can serve as a cushioning material.

[0112] In some embodiments, the protection plate 210 and the filler 230 can be at least one of resin, glass fiber, plastic, polypropylene (PP), polyurethane (PU), and ABS plastic, or a combination of several materials.

[0113] In some embodiments, the support 220 can be a steel plate, an iron plate, or the like. Any material that can provide sufficient support strength for the protection plate can be used as the support 220, and is not specifically limited herein.

[0114] In some embodiments, the battery tray assembly 10 further includes a fastener 400 for fastening the protection plate 200 and the tray body 100. Please refer to Figures 1-10 The connecting portion 112 is provided with a mounting hole 1122 extending along the second direction Z, the mounting hole 1122 penetrates the second surface 1121, the protection plate is provided with a through hole 251, and the fastener 400 is inserted into the mounting hole 1122 through the through hole 251 and fastened to the mounting hole 1122.

[0115] In some embodiments, Figures 1-10 The protection plate 200 is provided with a protruding portion 250, the protruding portion 250 is correspondingly arranged with the mounting hole 1122, and the protruding portion is arranged protruding towards the tray bottom 101 along the second direction Z. The through hole is arranged in the protruding portion 250 and penetrates the protruding portion 250 along the second direction Z. The fastener 400 can be a screw. In order to prevent the screw nut from protruding from the surface of the protection plate 200 away from the tray body 100 after installation, the protruding portion 250 is arranged protruding towards the tray bottom 101, thereby forming a groove on the lower surface of the protection plate. The screw nut is arranged in the groove, which can prevent the screw nut from protruding from the lower surface of the protection plate, so that the vehicle is not easily scratched by obstacles during driving, thereby improving the reliability and stability of the battery tray assembly.

[0116] It should be noted that the connection mode of the connecting portion 112 and the protection plate 200 is not limited to screwing, and other connection modes that can achieve fixed connection, such as riveting and bonding, can also achieve the connection effect proposed in the present application, and are not specifically limited herein.

[0117] In some embodiments, in order to facilitate the protruding formation of the protruding portion 400 and the fastening connection of the fastener 400, the protection plate 200, and the mounting hole 1122, the protruding portion 400 is composed of, along the second direction Z, the protection plate 210, the filler 230, and the protection plate 210. In the projection plane perpendicular to the second direction Z, the orthographic projection of the protruding portion 250 and the orthographic projection of the support 220 are arranged staggered.

[0118] The application further provides a battery assembly 1000, please refer to Figure 9 The battery assembly 1000 comprises the battery tray assembly 10 and the battery cell assembly provided by the application, and a cover plate 1001, the battery cell assembly is arranged in the accommodating cavity of the tray, and the cover plate 1001 seals the accommodating cavity.

[0119] In some embodiments, the orthographic projection of the battery cell assembly in the projection plane perpendicular to the second direction Z is within the orthographic projection of the support 220, so that all the battery cell assemblies can be protected by the support 220, thereby avoiding the battery cell assemblies being scratched by obstacles during the driving of the vehicle, and improving the safety performance of the battery assembly 1000.

[0120] The application further provides a power consuming device, the power consuming device comprising the battery assembly 1000 provided by the application. The power consuming device can be a vehicle, or other power consuming device having the battery assembly installed at the bottom thereof.

[0121] In the description of the present specification, the description of the terms "some embodiments", "in some embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery tray, characterized in that, Including the tray body, The bottom of the tray body is provided with at least one mounting part, the mounting part including a connecting part and a buffer part, the buffer part being provided on at least one side of the mounting part along a first direction; The connecting part is used to connect with the protective plate.

2. The battery tray according to claim 1, characterized in that, The buffer section is connected to the tray body and the connecting section.

3. The battery tray according to claim 1, characterized in that, Along the first direction, the height of the buffer portion away from the tray body gradually increases or gradually decreases.

4. The battery tray according to claim 3, characterized in that, The buffer portion includes a first surface that faces away from the tray body. The first surface includes a first end and a second end, the first end being connected to the tray body and the second end being connected to the connecting portion.

5. The battery tray according to claim 4, characterized in that, The first surface is at least one of a plane, an arc surface, and a curved surface.

6. The battery tray according to claim 4, characterized in that, The angle between the line connecting the first end and the second end and the plane containing the bottom of the tray body is set at an acute angle.

7. The battery tray according to claim 6, characterized in that, The included angle is α, and the value of α ranges from 3° to 15°.

8. The battery tray according to claim 4, characterized in that, The connecting portion includes a second surface that faces away from the tray body, and in a second direction, there is a height difference between the second surface and the bottom of the tray body; The second end extends to the second surface, and the first direction and the second direction intersect.

9. The battery tray according to claim 8, characterized in that, The height difference is h1, and the value of h1 is in the range of 3mm ≤ h1 ≤ 12mm.

10. The battery tray according to any one of claims 1-9, characterized in that, The pallet body includes a base plate and a structural beam. The structural beam passes through the base plate and is fixedly connected to the base plate. The mounting part is connected to the structural beam.

11. The battery tray according to claim 10, characterized in that, The base plate is provided with a flow channel for a fluid heat exchange medium. The flow channel is located on at least one side of the structural beam along a second direction, which intersects with the first direction.

12. A battery tray assembly, characterized in that, It includes a protective plate and a battery tray according to any one of claims 1-11, wherein the protective plate is connected to the connecting portion on the side opposite to the tray body.

13. The battery tray assembly according to claim 12, characterized in that, The battery tray assembly also includes a cushioning element disposed between the bottom of the tray and the protective plate.

14. The battery tray assembly according to claim 13, characterized in that, The buffer includes a third surface and a fourth surface facing away from each other, the third surface being adapted to the bottom surface of the tray body and fitting together, and / or the fourth surface being adapted to the surface of the guard plate facing the tray body and fitting together.

15. The battery tray assembly according to claim 13, characterized in that, The buffer is provided with a clearance hole, and the connecting part passes through the clearance hole and is fixedly connected to the guard plate.

16. The battery tray assembly according to claim 12, characterized in that, The protective plate includes two protective plates and at least one support member, with the support member sandwiched between the two protective plates.

17. The battery tray assembly according to claim 16, characterized in that, The protective plate is a non-metallic component, while the support component is a metallic component.

18. The battery tray assembly according to claim 16, characterized in that, The thickness h2 of the protective plate has a range of 0.6 ≤ h2 ≤ 1.2 mm.

19. The battery tray assembly according to claim 16, characterized in that, The thickness h3 of the support member has a range of 0.6 ≤ h3 ≤ 1.2 mm.

20. The battery tray assembly according to claim 16, characterized in that, The protective plate also includes multiple adhesive components; The adhesive is disposed between the protective plate and the support member and adhesively bonds the protective plate and the support member respectively.

21. The battery tray assembly according to claim 20, characterized in that, The thickness h4 of the adhesive component has a range of 0.1 ≤ h4 ≤ 0.3 mm.

22. The battery tray assembly according to claim 16, characterized in that, The protective plate includes multiple support members; the multiple support members are spaced apart in the first direction and / or the multiple support members are spaced apart in a third direction, wherein the first direction and the third direction intersect.

23. The battery tray assembly according to claim 22, characterized in that, The protective plate also includes a filler that fills between the two protective plates and / or at least partially fills between the plurality of support members.

24. The battery tray assembly according to any one of claims 16-23, characterized in that, The support member is provided with a plurality of weight-reducing holes extending along the second direction, and the weight-reducing holes are spaced apart.

25. The battery tray assembly according to claim 24, characterized in that, The weight-reducing hole penetrates the support member along the second direction.

26. The battery tray assembly according to claim 24, characterized in that, The shape of the cross-section of the weight-reducing hole perpendicular to the second direction is at least one of a circle and an ellipse, or the shape of the cross-section includes a transition fillet.

27. The battery tray assembly according to claim 24, characterized in that, The weight reduction hole includes a plurality of first weight reduction holes, the cross-section of the first weight reduction hole perpendicular to the second direction is circular, the first weight reduction hole has a first diameter d1, and the plurality of first weight reduction holes are arranged at intervals along the first direction and / or the third direction. Along the first direction and / or the third direction, the distance L1 between the first center of two adjacent first weight-reducing holes is in the range of: 1.5d1≤L1≤3d1; The first direction and the third direction form an angle, and both the first direction and the third direction are perpendicular to the second direction.

28. The battery tray assembly according to claim 27, characterized in that, The weight-reducing hole also includes a plurality of second weight-reducing holes, which are spaced apart from the first weight-reducing hole and are arranged at intervals along the first direction and / or the third direction.

29. The battery tray assembly according to claim 28, characterized in that, The shape of the cross section of the second weight-reducing hole perpendicular to the second direction is circular. The second weight-reducing hole has a second diameter d2. Along the first direction and / or the third direction, the distance L2 between the second centers of two adjacent second weight-reducing holes is in the range of 1.5d2≤L2≤3d2.

30. The battery tray assembly according to claim 28, characterized in that, The second weight-reducing hole is located between adjacent first weight-reducing holes.

31. The battery tray assembly according to claim 29, characterized in that, The first direction is perpendicular to the third direction, the second weight reduction hole is disposed between the four first weight reduction holes, and the distance between the center of the second hole and the center of the four adjacent first holes is equal.

32. The battery tray assembly according to claim 24, characterized in that, The cross-sectional shape of the weight-reducing hole perpendicular to the second direction is circular, and the diameter d of the circle is in the range of 5mm≤d≤15mm.

33. The battery tray assembly according to any one of claims 16-23, characterized in that, The connecting part is provided with a mounting hole extending in the second direction, and the protective plate is provided with a through hole corresponding to the mounting hole, the through hole penetrating the protective plate in the second direction; The battery tray assembly also includes fasteners that pass through the through hole and are securely connected to the mounting hole.

34. The battery tray assembly according to claim 33, characterized in that, The protective plate has a protrusion corresponding to the connecting part. The protrusion protrudes toward the tray body and forms a groove. The through hole is provided in the protrusion. The fastener is at least partially provided in the groove.

35. The battery tray assembly according to claim 33, characterized in that, On a projection plane perpendicular to the second direction, the orthographic projection of the through hole and the orthographic projection of the support are offset.

36. A battery assembly, characterized in that, Including the battery tray assembly according to any one of claims 12-35, the tray body has a receiving cavity on the side away from the mounting portion, and A battery cell assembly, wherein the battery cell assembly is housed in the receiving cavity.

37. The battery assembly according to claim 36, characterized in that, It also includes a cover plate adapted to close the receiving cavity.

38. The battery assembly according to claim 36, characterized in that, On a projection plane perpendicular to the second direction, the orthographic projection of the cell assembly is within the orthographic projection of the support member of the protective plate.

39. An electrical appliance, characterized in that, Includes the battery assembly as described in any one of claims 36-38.

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