Battery tray assembly, battery pack and electric equipment

Abstract

The utility model relates to a battery tray assembly, a battery pack and electric equipment. The battery tray assembly comprises a battery tray, a bottom protection plate and a connecting piece, the battery tray comprises a bottom plate, the connecting piece is fixed to the surface, facing the bottom protection plate, of the bottom plate, and the bottom protection plate is connected to the connecting piece. According to the battery tray assembly, the connecting piece is arranged on the bottom plate of the battery tray, so that the bottom plate and the bottom protection plate are fixedly connected through the connecting piece, the sealing performance of the bottom plate is prevented from being affected by connection between the bottom plate and the bottom protection plate, and the sealing performance of the battery tray assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery tray assembly, a battery pack including the battery tray assembly, and an electrical device including the battery pack. Background Art

[0002] In the prior art, the battery tray assembly of the battery pack usually includes a bottom plate and a bottom guard plate. The upper end of the bottom plate is used to carry the battery, and the bottom guard plate is arranged at the bottom of the bottom plate to prevent the bottom plate from being directly damaged and the battery from being damaged when the bottom is impacted. The bottom guard plate is usually fixed to the bottom plate by rivets penetrating the bottom plate and the bottom guard plate. If the riveting is poor or loose, external liquid will flow into the battery tray assembly from the riveting point, and the sealing performance of the battery pack is low. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of this application is to provide a battery tray assembly with improved sealing performance. Specifically, the technical solutions include the following:

[0004] In a first aspect, an embodiment of the present application provides a battery tray assembly, including a battery tray, a bottom guard plate and a connector, wherein the battery tray includes a bottom plate, the connector is fixed to a surface of the bottom plate facing the bottom guard plate, and the bottom guard plate is connected to the connector.

[0005] The battery tray assembly of the present application is provided with a connector on the bottom plate of the battery tray so that the bottom plate and the bottom guard plate are fixedly connected through the connector to prevent the connection between the bottom plate and the bottom guard plate from affecting the sealing performance of the bottom plate, thereby improving the sealing performance of the battery tray assembly of the present application.

[0006] In one embodiment, along the direction from the bottom plate to the bottom guard plate, one end of the connecting piece is fixedly connected to the bottom plate, and the other end is provided with a connecting hole. The battery tray assembly also includes a fastener, which passes through the bottom guard plate and is connected to the connecting hole to achieve a fixed connection between the bottom guard plate and the bottom plate.

[0007] In one embodiment, a flow channel is provided inside the bottom plate, and the flow channel is used to circulate a heat exchange medium to achieve heat exchange for the battery.

[0008] In one embodiment, the bottom plate includes a temperature averaging plate and a flow channel plate that are fixedly connected. The flow channel plate is located between the temperature averaging plate and the bottom protective plate. A groove is provided on the surface of the flow channel plate facing the temperature averaging plate. The temperature averaging plate covers the groove to cooperate to form a flow channel. The connecting piece is fixedly connected to the flow channel plate.

[0009] In one embodiment, the flow channel plate is provided with an avoidance hole, and along the plane direction of the flow channel plate, the avoidance hole and the groove are spaced apart from each other, and the connecting piece is provided with a protrusion, and the protrusion is embedded in the avoidance hole.

[0010] In one embodiment, along the plane direction of the flow channel plate, the groove is arranged in the middle of the flow channel plate, and the edge areas of the flow channel plate and the temperature equalizing plate are in contact with each other; a plurality of connectors are provided, and the plurality of connectors are arranged along the circumference of the flow channel plate.

[0011] In one embodiment, the temperature uniformity plate is connected to the flow channel plate by brazing, and / or the flow channel plate is connected to the connecting piece by brazing.

[0012] In one embodiment, the circumferential edges of the temperature equalizing plate and the flow channel plate extend in a direction away from the bottom guard plate and are interconnected to form a side plate. The side plate and the bottom plate enclose a receiving cavity, which is used to receive the battery.

[0013] In one embodiment, the battery tray assembly further includes a seal that is attached between the bottom plate and the peripheral edge of the bottom guard plate.

[0014] In one embodiment, the circumferential edge of the bottom guard plate is provided with a flange structure facing the bottom plate, and the sealing member is attached to the inner side of the flange structure.

[0015] In one embodiment, the battery tray assembly further includes a buffer plate, which is disposed between the bottom plate and the bottom guard plate, and the buffer plate is at least in contact with the bottom plate or the bottom guard plate.

[0016] In one embodiment, a surface of the bottom guard plate away from the bottom plate is provided with a plurality of mutually spaced mounting bosses, and the plurality of mounting bosses are used for fixed connection with an external protective structure.

[0017] In one embodiment, a plurality of mutually spaced mounting portions are provided on one side of the bottom guard plate facing the bottom plate, and the mounting portions are used to be fixedly connected to an external protective structure.

[0018] In one embodiment, the surface of the bottom guard plate away from the bottom plate is coated with a protective layer.

[0019] In a second aspect, an embodiment of the present application provides a battery pack, including a battery and a battery tray assembly, wherein the battery is accommodated in the battery tray assembly.

[0020] In a third aspect, an embodiment of the present application provides an electrical device including a battery pack.

[0021] It can be understood that the battery pack provided in the second aspect of the present application and the electrical equipment provided in the third aspect both have the effect of improving the sealing performance due to the adoption of the battery tray assembly provided in the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an exploded view of a battery pack provided in one embodiment of the present application;

[0023] Figure 2A partial cross-sectional schematic diagram of a battery tray assembly provided in one embodiment of the present application;

[0024] Figure 3 A schematic diagram of a partial structure of a battery tray assembly provided in one embodiment of the present application;

[0025] Figure 4 A partially enlarged schematic diagram of a battery tray assembly provided in one embodiment of the present application;

[0026] Figure 5 Another partial cross-sectional schematic diagram of a battery tray assembly provided in an embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the structure of a bottom guard plate provided in one embodiment of the present application;

[0028] Figure 7 A partially enlarged schematic diagram of a bottom guard plate provided in an embodiment of the present application;

[0029] Figure 8 Another partial cross-sectional schematic diagram of a battery tray assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0031] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including", "may include", "include", or "may include" used in this application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "including" or "include" indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0034] The present application provides an electrical device, including a battery pack. Exemplarily, the electrical device is a vehicle, and the vehicle includes a vehicle body and a battery pack, and the battery pack is housed in the vehicle body to provide electrical energy to the vehicle. Among them, for the convenience of description, in the subsequent embodiments of the present application, the electrical device corresponding to the battery pack is set as a vehicle. It can be understood that in other embodiments, the battery pack of the present application can also be applied to other electrical devices, and the present application does not impose any special restrictions on this.

[0035] See also Figure 1 The figure shows an exploded schematic diagram of a battery pack 200 provided in one embodiment of the present application.

[0036] like Figure 1 As shown, the battery pack 200 of the present application includes a battery 201 and a battery tray assembly 100, wherein a plurality of batteries 201 are provided. The plurality of batteries 201 are connected in series or in parallel. Since the batteries 201 connected in series can increase the voltage of the battery pack 200, and the batteries 201 connected in parallel can increase the capacity of the battery pack 200. It can be understood that the parallel or series connection of the plurality of batteries 201 can enable the batteries 201 to match each other, thereby forming a battery pack 200 with a certain voltage and a certain capacity to meet the different usage requirements of electrical equipment.

[0037] The battery tray assembly 100 includes a battery tray 10a, and a receiving cavity 10b is provided in the battery tray 10a. Multiple batteries 201 are arranged in the receiving cavity 10b to prevent external impurities from directly acting on the outer shell of the battery 201 (not shown in the figure), thereby protecting each battery 201. The battery pack 200 of the present application is ensured to be safe in use.

[0038] In one embodiment, if Figure 1 As shown, the battery tray 10a of the present application includes a bottom plate 10 and a side plate 20, and the battery tray assembly 100 of the present application also includes a bottom guard plate 30. The side plate 20 surrounds the outer edge of the bottom plate 10 and forms a receiving cavity 10b to accommodate the battery 201. The bottom guard plate 30 is located on a side of the bottom plate 10 away from the receiving cavity 10b and is fixedly connected to the bottom plate 10.

[0039] For details, please refer to Figure 2 The partial cross-sectional diagram of the battery tray assembly 100 provided in one embodiment of the present application is shown in FIG. Figure 1 .

[0040] like Figure 1 and Figure 2 As shown, the battery tray assembly 100 of the present application further includes a connector 40, which is fixed to the surface of the bottom plate 10 facing the bottom guard plate 30, and the connector 40 extends toward the bottom guard plate 30. The bottom guard plate 30 is fixedly connected to the connector 40, thereby achieving the mutual fixation of the bottom guard plate 30 and the bottom plate 10. It can be understood that the provision of the bottom guard plate 30 prevents direct damage to the bottom plate 10 by external impurities, thereby ensuring the integrity and safety of the battery 201 accommodated in the accommodating cavity 10b. The protection performance of the battery tray assembly 100 of the present application is improved.

[0041] Therefore, compared with the prior art that uses riveting to fix the bottom plate and the bottom guard plate, the battery tray assembly 100 of the present application sets a connecting piece 40 on the bottom plate 10 of the battery tray 10a. While ensuring the connection between the bottom guard plate 30 and the bottom plate 10, it avoids damage to the bottom plate 10 caused by setting the rivet holes, and also avoids external liquid from entering the interior of the battery tray assembly 100 due to poor riveting or loose rivets, thereby improving the sealing performance of the battery tray assembly 100 of the present application.

[0042] It can be understood that in other embodiments, the battery tray assembly 100 of the present application further includes a second connector, which is fixed to the surface of the bottom guard plate 30 facing the bottom plate 10 and extends toward the bottom plate 10, and the bottom plate 10 is connected to the second connector to achieve a fixed connection between the bottom plate 10 and the bottom guard plate 30. In other embodiments, the battery tray assembly 100 of the present application may include both the connector 40 and the second connector. The present application does not impose any particular limitation on this.

[0043] See also Figure 3 The partial structural diagram of the battery tray assembly 100 provided in one embodiment of the present application is shown in FIG. Figure 4 The partially enlarged schematic diagram of the battery tray assembly 100 provided in one embodiment of the present application is shown in FIG. Figure 1 and Figure 2 .in, Figure 4 for Figure 3 A partial enlarged schematic diagram of .

[0044] like Figure 1-Figure 4 As shown, along the arrangement direction of the bottom plate 10 and the bottom guard plate 30, one end of the connecting member 40 is fixedly connected to the bottom plate 10, and the other end is provided with a connecting hole 41. The bottom guard plate 30 is provided with a positioning hole 31. The connecting member 40 abuts against the surface of the bottom guard plate 30 facing the bottom plate 10, and the connecting hole 41 corresponding to the connecting member 40 is aligned with the positioning hole 31.

[0045] like Figure 2 As shown, the external fastener can extend into the connecting hole 41 through the positioning hole 31 to achieve a fixed connection between the bottom guard plate 30 and the connecting member 40 , thereby achieving a fixed connection between the bottom guard plate 30 and the bottom plate 10 .

[0046] Specifically, Figure 2 As shown, the connection hole 41 is provided with a thread, and a screw can be used to pass the threaded end of the screw through the positioning hole 31 and extend into the connection hole 41, and cooperate with the internal thread of the connection hole 41 to achieve the fixation of the bottom guard plate 30 and the connection member 40. In another embodiment, solder can be filled in the positioning hole 31 and the connection hole 41 to achieve the fixed connection between the bottom guard plate 30 and the connection member 40 by welding. In other embodiments, the fixed connection method of the connection member 40 and the bottom guard plate 30 can also be other, and this application does not specifically limit this.

[0047] In one embodiment, if Figure 1-Figure 4As shown, a flow channel 11 is also provided inside the bottom plate 10, and the flow channel 11 is connected to an external heat exchange medium source. During the use of the battery pack 200, the battery 201 in the battery tray assembly 100 will emit heat, and this part of the heat may affect the performance of the battery 201. It can be understood that the flow channel 11 is provided in the bottom plate 10, so that the heat exchange medium in the external heat exchange medium source can flow into the flow channel 11, and the heat of the battery 201 is achieved through the bottom plate 10, thereby reducing the overall temperature of the battery pack 200 and ensuring the performance of the battery pack 200 of the present application.

[0048] Specifically, in one embodiment, Figure 2-Figure 4 As shown, the bottom plate 10 includes a temperature averaging plate 12 and a flow channel plate 13. Along the arrangement direction of the bottom plate 10 and the bottom guard plate 30, the flow channel plate 13 is located between the temperature averaging plate 12 and the bottom guard plate 30. A groove 131 is provided on the surface of the flow channel plate 13 facing the temperature averaging plate 12, and the temperature averaging plate 12 covers the groove 131 to form the flow channel 11.

[0049] During the use of the battery pack 200, the heat generated by the battery 201 will be transferred to the temperature equalizing plate 12. This part of the heat will diffuse to the surroundings along the plane direction of the temperature equalizing plate 12 and be absorbed by different heat exchange media in the groove 131 respectively, thereby realizing the heat dissipation function of the battery 201.

[0050] At the same time, if Figure 2-Figure 4 As shown, the connector 40 is disposed on the side of the flow channel plate 13 away from the temperature balancing plate 12, and is fixedly connected to the flow channel plate 13. It can be understood that fixing the connector 40 on the side of the flow channel plate 13 away from the temperature balancing plate 12 can avoid the influence of the setting of the connector 40 on the temperature balancing plate 12, and avoid the damage to the sealing performance of the bottom plate 10 during the connection process of the bottom plate 10 and the bottom guard plate 30, thereby ensuring the fixed connection between the bottom plate 10 and the bottom guard plate 30 and the heat dissipation function of the bottom plate 10, while ensuring the sealing performance of the battery tray assembly 100 of the present application.

[0051] For details, please refer to Figure 5 Another partial cross-sectional schematic diagram of a battery tray assembly 100 provided in one embodiment of the present application is shown in FIG. Figure 2 and Figure 4 .in, Figure 5 for Figure 4 Schematic diagram of a partial cross section.

[0052] like Figure 2 , Figure 4 and Figure 5As shown, the flow channel plate 13 is also provided with an avoidance hole 132. Along the plane direction of the flow channel plate 13, the avoidance hole 132 and the groove 131 are spaced apart from each other. The end of the connecting member 40 away from the connecting hole 41 is provided with a protrusion 42, which extends toward the flow channel plate 13 and is embedded in the avoidance hole 132.

[0053] In the process of setting the connector 40, it is necessary to ensure that the connector 40 and the flow channel plate 13 are in contact with each other. It can be understood that the setting of the protrusion 42 can increase the contact area between the connector 40 and the flow channel plate 13, thereby increasing the connection area between the connector 40 and the flow channel plate 13, avoiding the situation where the connector 40 and the flow channel plate 13 fall off during use, and improving the connection reliability between the connector 40 and the flow channel plate 13. In turn, the connection reliability between the bottom plate 10 and the bottom guard plate 30 is improved, and the sealing performance of the battery tray assembly 100 of the present application is improved.

[0054] On the other hand, the spacing between the avoidance hole 132 and the groove 131 can also prevent external liquid from entering the groove 131 through the avoidance hole 132, thereby contaminating the heat exchange efficiency of the heat exchange medium. It also prevents the heat exchange medium from flowing out and affecting the sealing performance of the battery tray assembly 100. At the same time, the matching setting of the avoidance hole 132 and the protrusion 42 can also improve the positioning efficiency of the connector 40, thereby improving the assembly efficiency of the battery tray assembly 100 of the present application.

[0055] In one embodiment, the connection between the connector 40 and the flow channel plate 13 can be fixedly connected by welding. In other embodiments, the connection between the connector 40 and the flow channel plate 13 can also be other, and illustratively, the connection between the connector 40 and the flow channel plate 13 is bonding. This application does not impose any particular limitation on this.

[0056] In one embodiment, if Figure 2-Figure 4 As shown, along the plane direction of the flow channel plate 13, the groove 131 is arranged in the middle part of the flow channel plate 13, and the edge area of ​​the flow channel plate 13 where the groove 131 is not arranged and the edge area of ​​the temperature equalizing plate 12 are fitted together, so as to avoid the possibility of the heat exchange medium flowing in the groove 131 flowing out from between the flow channel plate 13 and the temperature equalizing plate 12, thereby further improving the sealing performance of the battery tray assembly 100 of the present application.

[0057] There are multiple connectors 40, which are arranged at intervals. There are also multiple avoidance holes 132, and the number of avoidance holes 132 is the same as the number of connectors 40. The multiple avoidance holes 132 are arranged along the circumference of the flow channel plate 13, and the protrusion 42 of each connector 40 is embedded in one avoidance hole 132.

[0058] The bottom guard plate 30 is fixedly connected to the bottom plate 10 through the connecting piece 40. It can be understood that the provision of multiple connecting pieces 40 improves the connection reliability between the bottom guard plate 30 and the bottom plate 10, and avoids the possibility that a single connecting piece 40 is damaged and affects the connection between the bottom guard plate 30 and the bottom plate 10. The reliability of the battery tray assembly 100 of the present application is improved.

[0059] In one embodiment, the temperature averaging plate 12 and the flow channel plate 13 are connected by brazing. The flow channel plate 13 and the connector 40 are connected by brazing. It is understandable that in other embodiments, the connection between the temperature averaging plate 12 and the flow channel plate 13 can be other. In other embodiments, the connection between the flow channel plate 13 and the connector 40 can be other. This application does not impose any special restrictions on this.

[0060] In one embodiment, please refer to Figure 1 and Figure 3 Along the arrangement direction of the temperature equalizing plate 12 and the flow channel plate 13, the circumferential edge of the temperature equalizing plate 12 extends in the direction away from the bottom guard plate 30, and the circumferential edge of the flow channel plate 13 also extends in the direction away from the bottom guard plate 30, and the extended temperature equalizing plate 12 and the flow channel plate 13 are attached to each other to form a side plate 20, so as to cooperate with the bottom plate 10 to form a battery tray 10a with a accommodating cavity 10b.

[0061] In one embodiment, if Figure 1 and Figure 2 As shown, the battery tray assembly 100 of the present application further includes a seal 50, which is disposed between the circumferential edges of the bottom plate 10 and the bottom guard plate 30, and is respectively attached to the bottom plate 10 and the bottom guard plate 30. The seal 50 is annular and surrounds the middle of the bottom plate 10 and the bottom guard plate 30 to achieve sealing of the space between the bottom plate 10 and the bottom guard plate 30.

[0062] During the operation of the vehicle, external liquid impurities may enter between the bottom plate 10 and the bottom guard plate 30, and these liquid impurities may remain between the bottom plate 10 and the bottom guard plate 30, which may corrode the bottom plate 10 and the bottom guard plate 30. At the same time, external solid impurities may also enter between the bottom plate 10 and the bottom guard plate 30, which may damage the bottom plate 10 and affect the sealing effect of the battery tray assembly 100.

[0063] It can be understood that the setting of the seal 50 eliminates the communication path between the gap between the bottom plate 10 and the bottom guard plate 30 and the external environment, and blocks the possibility of external impurities entering between the bottom plate 10 and the bottom guard plate 30. The influence of external impurities on the sealing performance of the bottom plate 10 is reduced, and the sealing performance of the battery tray assembly 100 of the present application is improved.

[0064] In one embodiment, if Figure 1 and Figure 2 As shown, the circumferential edge of the bottom guard plate 30 is provided with a flange structure 32 facing the bottom plate 10, and the seal 50 is attached to the inner side of the flange structure 32. The distance between the flange structure 32 and the bottom plate 10 is smaller than the distance between the middle of the bottom plate 10 and the bottom guard plate 30.

[0065] It can be understood that the flange structure 32 is provided on the bottom guard plate 30, which can reduce the distance between the edge area of ​​the bottom guard plate 30 and the bottom plate 10, and further reduce the possibility of external impurities entering between the bottom guard plate 30 and the bottom plate 10 through the gap between the bottom guard plate 30 and the bottom plate 10. At the same time, the sealing member 50 is provided between the flange structure 32 and the bottom plate 10, which can fix the sealing member 50 and further improve the sealing performance of the battery tray assembly 100 of the present application.

[0066] In the embodiment of the present application, the circumferential edge of the bottom plate 10 may also be flanged in a direction away from the accommodating cavity 10b, so as to reduce the distance between the edge areas of the bottom plate 10 and the bottom guard plate 30. It is understandable that in other embodiments, the distance between the edge areas of the bottom plate 10 and the bottom guard plate 30 may be reduced in other ways, and the present application does not impose any particular limitation on this.

[0067] In one embodiment, if Figure 1 and Figure 2 As shown, the battery tray assembly 100 of the present application also includes a buffer plate 60, which is located between the bottom plate 10 and the bottom guard plate 30, and fits with the bottom plate 10 and the bottom guard plate 30. The buffer plate 60 is elastic. When external impurities act on the bottom guard plate 30, the impact force of the external impurities on the bottom guard plate 30 will be transmitted to the bottom plate 10 via the connector 40. It can be understood that the setting of the elastic buffer plate 60 can enable the impact of external impurities on the bottom guard plate 30 to act on the buffer plate 60 and be absorbed by the buffer plate 60, thereby reducing the impact on the bottom plate 10.

[0068] That is, the provision of the elastic buffer plate 60 further prevents external impurities from damaging the bottom plate 10, thereby ensuring the integrity and safety of the battery 201, and further improving the protection performance of the battery tray assembly 100 of the present application.

[0069] It is understandable that in other embodiments, the buffer plate 60 may only be in contact with the bottom plate 10, or only be in contact with the bottom guard plate 30. This application does not make any special limitation to this.

[0070] In one embodiment, the seal 50 is elastic. Since the seal 50 is held between the bottom plate 10 and the bottom guard plate 30, the bottom guard plate 30 will deform in the direction from the bottom guard plate 30 to the bottom plate 10 when subjected to external impact. It can be understood that the seal 50 is elastic, so that the impact on the bottom guard plate 30 can also be absorbed by the seal 50 when it is transmitted to the seal 50, further reducing the impact of external impact on the bottom plate 10, and further improving the protection performance of the battery tray assembly 100 of the present application.

[0071] At the same time, the provision of the elastic seal 50 can also ensure the abutment relationship between the bottom plate 10 and the bottom guard plate 30, further improving the sealing effect of the seal 50 on the buffer plate 60 during the use of the battery tray assembly 100 of the present application, further improving the sealing performance of the battery tray assembly 100 of the present application.

[0072] On the other hand, the hardness of the seal 50 is less than that of the buffer plate 60. Since both the seal 50 and the buffer plate 60 are elastic, the seal 50 and the buffer plate 60 will deform during the use of the seal 50 and the buffer plate 60. The hardness of the material is one of the factors that directly affect the deformation of the material. The greater the hardness of the material, the stronger the material's ability to resist pressure, and the more difficult it is for the material to deform.

[0073] Based on the mutual fit between the buffer plate 60, the bottom plate 10 and the bottom guard plate 30, it is understandable that when the hardness of the buffer plate 60 is too small, the buffer plate 60 itself will have a large deformation when absorbing the external impact on the bottom guard plate 30. However, the distance between the bottom plate 10 and the bottom guard plate 30 is limited, which may cause the external impact acting on the bottom guard plate 30 to directly act on the bottom plate 10 before being completely absorbed by the buffer plate 60.

[0074] That is, when the hardness of the buffer plate 60 is too small, the absorption rate of the buffer plate 60 to external impact is reduced, resulting in reduced protection performance of the buffer plate 60 to the bottom plate 10, thereby affecting the protection performance of the battery tray assembly 100 of the present application.

[0075] At the same time, when the hardness of the seal 50 is too large, it is difficult for the seal 50 to deform when it is set on the bottom plate 10 and the bottom guard plate 30, thereby making it difficult to ensure the abutment relationship between the seal 50 and the bottom plate 10 and the bottom guard plate 30, affecting the sealing of the seal 50 on the buffer plate 60 and affecting the sealing performance of the battery tray assembly 100 of the present application.

[0076] Therefore, setting the hardness of the seal 50 to be lower than the hardness of the buffer plate 60 can improve the buffer plate 60's absorption efficiency of the impact on the bottom guard plate 30, further reduce the impact of external impact on the bottom plate 10, and further improve the protective performance of the battery tray assembly 100 of the present application.

[0077] On the other hand, it can also reduce the difficulty of installing the seal 50, ensure the deformation of the seal 50 between the bottom plate 10 and the bottom guard plate 30, and ensure the abutment relationship between the seal 50 and the bottom plate 10 and the bottom guard plate 30, thereby ensuring the sealing effect of the seal 50 on the buffer plate 60, and ensuring the improvement of the sealing performance of the battery tray assembly 100 of the present application.

[0078] In one embodiment, the compression amount of the seal 50 is greater than or equal to the compression amount of the buffer plate 60. Based on the fact that the hardness of the seal 50 is less than that of the buffer plate 60, and the greater the hardness, the more difficult it is to deform. It can be understood that when the compression amount of the seal 50 is less than the compression amount of the buffer plate 60, the seal 50 may fail to seal during use when the distance between the bottom plate 10 and the bottom guard plate 30 is expanded due to external impact.

[0079] As for the buffer plate 60, a larger compression amount will increase the difficulty of setting the buffer plate 60. Since the buffer plate 60 is elastic, it is understandable that a larger compression amount will cause a larger elastic force to be stored inside the buffer plate 60. A part of this elastic force may act on the connection between the bottom guard plate 30 and the connecting member 40 through the bottom guard plate 30, affecting the connection relationship between the bottom guard plate 30 and the bottom plate 10, and another part may directly act on the battery 201 in the accommodating cavity 10b through the bottom plate 10, thereby affecting the safety of the battery 201.

[0080] Therefore, setting the compression amount of the seal 50 to be greater than or equal to the compression amount of the buffer plate 60 can ensure the abutment relationship between the seal 50 and the bottom plate 10 and the bottom guard plate 30 during use, ensure the sealing effect of the seal 50 on the buffer plate 60, and ensure the improvement of the sealing performance of the battery tray assembly 100 of the present application.

[0081] At the same time, it can also reduce the influence of the elastic force stored in the buffer plate 60 after compression on the connection between the bottom plate 10 and the bottom guard plate 30, and reduce the elastic force of the buffer plate 60 directly acting on the bottom plate 10, thereby ensuring the protection performance of the battery tray assembly 201 of the present application.

[0082] In one embodiment, in a natural state, the thickness of the buffer plate 60 is between 3 mm and 15 mm. It is understandable that when the thickness of the buffer plate 60 is less than 3 mm, the buffer plate 60 has a low ability to absorb external impacts, and the buffer plate 60 has a reduced effect of mitigating external impacts, thereby reducing the protective effect of the battery tray assembly 100 of the present application. At the same time, under the premise that the spacing between the bottom plate 10 and the bottom guard plate 30 remains unchanged, the thickness of the buffer plate 60 is less than 3 mm, and it may be difficult to ensure the compression amount of the buffer plate 60 between the bottom plate 10 and the bottom guard plate 30.

[0083] On the other hand, under the premise that the distance between the bottom plate 10 and the bottom guard plate 30 remains unchanged, when the thickness of the buffer plate 60 is greater than 15 mm, the compression amount of the buffer plate 60 between the bottom plate 10 and the bottom guard plate 30 will increase, thereby increasing the difficulty of installing the buffer plate 60 and increasing the elastic force stored in the buffer plate 60, which may affect the connection relationship between the bottom plate 10 and the bottom guard plate 30, as well as the safety of use of the battery 201 in the accommodating cavity 10b.

[0084] Under the premise that the compression amount of the buffer plate 60 remains unchanged, the thickness of the buffer plate 60 is greater than 15 mm, which will increase the distance between the bottom plate 10 and the bottom guard plate 30, thereby reducing the capacity of the battery 201 in the battery tray assembly 100. At the same time, the increase in the distance between the bottom plate 10 and the bottom guard plate 30 will also increase the distance between the chassis and the bottom surface of the vehicle, thereby affecting the user's comfort. At the same time, the increase in the thickness of the buffer plate 60 will also increase the manufacturing cost of the battery tray assembly 100 of the present application.

[0085] Therefore, the battery tray assembly 100 of the present application sets the thickness of the buffer plate 60 between 3mm-15mm, which can reduce the manufacturing cost, ensure the spacing between the bottom plate 10 and the bottom guard plate 30, and reduce the elastic force of the buffer plate 60 on the bottom plate 10, while ensuring the absorption efficiency of the buffer plate 60 against external impacts, thereby ensuring the protective performance of the battery tray assembly 100 of the present application.

[0086] In this embodiment and subsequent embodiments, the thickness of the structure in a natural state refers to the thickness of the structure in a normal temperature and pressure environment, and without tension or pressure other than gravity. In this embodiment, the thickness of the buffer plate 60 in a natural state refers to the thickness of the buffer plate 60 in a normal temperature and pressure environment, without tension or pressure.

[0087] In one embodiment, in a natural state, the thickness of the seal 50 is between 5 mm and 15 mm. It is understandable that when the thickness of the seal 50 is less than 5 mm, and under the premise that the spacing between the bottom plate 10 and the bottom guard plate 30 remains unchanged, it may be difficult to ensure the compression of the seal 50 between the bottom plate 10 and the bottom guard plate 30, resulting in the seal 50 being unable to seal the buffer plate 60 during use, thereby affecting the sealing performance of the battery tray assembly 100 of the present application.

[0088] On the other hand, when the thickness of the seal 50 is greater than 15 mm, the manufacturing cost of the seal 50 will increase, thereby increasing the manufacturing cost of the battery tray assembly 100 of the present application.

[0089] Therefore, the battery tray assembly 100 of the present application can reduce manufacturing costs while ensuring the sealing effect of the seal 50 on the buffer plate 60 by setting the thickness of the seal 50 between 5mm-15mm, thereby ensuring that the seal 50 improves the sealing performance of the battery tray assembly 100 of the present application.

[0090] In one embodiment, along the plane direction of the bottom plate 10, the seal 50 is annular, and the thickness of the seal 50 is greater than or equal to 6 mm. It is understandable that when the thickness of the seal 50 is less than 6 mm, the seal 50 may be damaged by external impurities, thereby causing the seal 50 to fail to seal. At the same time, during the use of the seal 50, the seal 50 may also be damaged due to deformation, thereby causing the seal to fail.

[0091] Therefore, the battery tray assembly 100 of the present application sets the thickness of the seal 50 to be greater than or equal to 6 mm, which can avoid sealing failure due to too small thickness during use, thereby ensuring the sealing of the buffer plate 60 by the seal 50 and ensuring that the seal 50 improves the sealing performance of the battery tray assembly 100 of the present application.

[0092] See also Figure 6 See FIG. 1 for a schematic diagram of the structure of the bottom guard plate 30 provided in one embodiment of the present application. Figure 7 The partially enlarged schematic diagram of the bottom guard plate 30 provided in one embodiment of the present application is shown, and please refer to Figure 8 Another partial cross-sectional schematic diagram of a battery tray assembly 100 provided in one embodiment of the present application is shown.

[0093] like Figure 6-Figure 8 As shown, a plurality of mounting bosses 33 are convexly provided on the surface of the bottom guard plate 30 away from the bottom plate 10, and the plurality of mounting bosses 33 are spaced apart from each other. A plurality of mounting portions 34 are provided on the side of the bottom guard plate 30 facing the bottom plate 10, and the plurality of mounting portions 34 are spaced apart from each other, and each mounting boss 33 is aligned with a mounting portion 34. The bottom guard plate 30 is also provided with mounting holes 35, and a plurality of mounting holes 35 are also provided, and each mounting hole 35 passes through the mounting boss 33 and the mounting portion 34 in sequence.

[0094] Among them, each mounting hole 35 is provided with a thread, and the external screw can pass through the external protective structure (such as a fender) and the mounting hole 35 in turn, and cooperate with the thread in the mounting hole 35 to achieve a fixed connection between the external protective structure and the bottom guard plate 30.

[0095] It is understandable that in another embodiment, the external protective structure can also use rivets to pass through the external protective structure and the mounting hole 35, and cooperate with the mounting hole 35 to achieve a fixed connection between the external protective structure and the bottom guard plate 30. In other embodiments, the mounting hole 35 is filled with solder to facilitate welding the external protective structure to the mounting boss 33. In other embodiments, the external protective structure and the bottom guard plate 30 can also be fixedly connected in other ways, which are not particularly limited in this application.

[0096] In the embodiment of the present application, the external protective structure can be used to further reduce the impact of external impurities on the bottom guard plate, and further improve the protective performance of the battery tray assembly 100. Exemplarily, the external protective structure is a fender.

[0097] Therefore, compared with the prior art in which the mounting point connected to the external protective structure is set on the side panel, the battery tray assembly 100 of the present application sets the mounting boss 33 and the mounting portion 34 on the bottom guard plate 30, so that the mounting boss 33 and the mounting portion 34 can be prepared by one-piece molding, reducing the process required for separately setting the mounting structure on the side panel 20, thereby reducing the cost.

[0098] At the same time, since the side plate 20 is composed of the temperature averaging plate 12 and the flow channel plate 13 that fit each other, it is understandable that, compared with the prior art, the installation boss 33 and the installation portion 34 are arranged on the bottom guard plate 30, and the installation boss 33 and the installation portion 34 can also avoid affecting the connection between the temperature averaging plate 12 and the flow channel plate 13, thereby improving the use stability of the battery tray assembly 100 of the present application.

[0099] On the other hand, the mounting boss 33 is arranged on the bottom guard plate 30, which can also increase the contact area between the external protective structure and the battery tray assembly 100, so as to facilitate the positioning of the external protective structure and enhance the connection stability between the bottom guard plate 30 and the external protective structure.

[0100] In other embodiments, the bottom guard plate 30 of the battery tray assembly 100 may be provided with only a mounting boss 33 for fixed connection with an external protective structure, or may be provided with only a mounting portion 34 for fixed connection with an external protective structure.

[0101] In one embodiment, if Figure 8As shown, the battery tray assembly 100 of the present application also includes a protective layer 70, and the protective layer 70 is coated on the surface of the bottom guard plate 30 away from the bottom plate 10. Among them, the protective layer 70 is made of polyvinyl chloride material. Based on the fact that polyvinyl chloride material has good wear resistance. It can be understood that the provision of the protective layer 70 can improve the wear resistance of the bottom guard plate 30 and prevent the external solid impurities from scratching the bottom guard plate 30 during the operation of the vehicle, thereby ensuring the integrity of the bottom guard plate 30. The protective performance of the battery tray assembly 100 of the present application is further improved.

[0102] It should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0104] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in the field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application. Ordinary technicians in the field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of this utility model still fall within the scope covered by this utility model.

Claims

1. A battery tray assembly, characterized in that: It comprises a battery tray, a bottom guard plate and a connecting piece, wherein the battery tray comprises a bottom plate, the connecting piece is fixed to the surface of the bottom plate facing the bottom guard plate, and the bottom guard plate is connected to the connecting piece; Along the direction from the bottom plate to the bottom guard plate, one end of the connecting piece is fixedly connected to the bottom plate, and the other end is provided with a connecting hole. The battery tray assembly also includes a fastener, which passes through the bottom guard plate and is connected to the connecting hole to achieve a fixed connection between the bottom guard plate and the bottom plate.

2. The battery tray assembly according to claim 1, characterized in that: A flow channel is provided inside the bottom plate, and the flow channel is used to circulate a heat exchange medium to achieve heat exchange for the battery.

3. The battery tray assembly according to claim 2, characterized in that: The bottom plate includes a temperature averaging plate and a flow channel plate that are fixedly connected. The flow channel plate is located between the temperature averaging plate and the bottom protective plate. A groove is provided on the surface of the flow channel plate facing the temperature averaging plate. The temperature averaging plate covers the groove to cooperate to form the flow channel. The connecting piece is fixedly connected to the flow channel plate.

4. The battery tray assembly according to claim 3, characterized in that: The flow channel plate is provided with an avoidance hole, and along the plane direction of the flow channel plate, the avoidance hole and the groove are spaced apart from each other, and the connecting piece is provided with a protrusion, and the protrusion is embedded in the avoidance hole.

5. The battery tray assembly according to claim 3, characterized in that: Along the plane direction of the flow channel plate, the groove is arranged in the middle of the flow channel plate, and the edge areas of the flow channel plate and the temperature balancing plate are in contact with each other; There are a plurality of connecting members, and the plurality of connecting members are arranged along the circumferential direction of the flow channel plate.

6. The battery tray assembly according to claim 3, characterized in that: The temperature uniform plate is connected to the flow channel plate by brazing, and / or the flow channel plate is connected to the connecting piece by brazing.

7. The battery tray assembly according to claim 3, characterized in that: The circumferential edges of the temperature equalizing plate and the flow channel plate extend in a direction away from the bottom guard plate and are connected to each other to form a side plate. The side plate and the bottom plate enclose a receiving cavity, and the receiving cavity is used to receive a battery.

8. The battery tray assembly according to claim 1, characterized in that: The battery tray assembly also includes a seal that is attached between the bottom plate and the peripheral edge of the bottom guard plate.

9. The battery tray assembly according to claim 8, characterized in that: The circumferential edge of the bottom guard plate is provided with a flange structure facing the bottom plate, and the sealing member is attached to the inner side of the flange structure.

10. The battery tray assembly according to claim 1, characterized in that: The battery tray assembly further includes a buffer plate, which is disposed between the bottom plate and the bottom guard plate, and the buffer plate is at least in contact with the bottom plate or the bottom guard plate.

11. The battery tray assembly according to claim 1, characterized in that: A surface of the bottom guard plate away from the bottom plate is provided with a plurality of mutually spaced mounting bosses, and the plurality of mounting bosses are used for fixed connection with an external protective structure.

12. The battery tray assembly according to claim 1, characterized in that: A plurality of mutually spaced mounting portions are provided on one side of the bottom guard plate facing the bottom plate, and the mounting portions are used for fixedly connecting with an external protective structure.

13. The battery tray assembly according to claim 1, characterized in that: The surface of the bottom guard plate away from the bottom plate is coated with a protective layer.

14. A battery pack, characterized in that: It comprises a battery and a battery tray assembly as described in any one of claims 1 to 13, wherein the battery is accommodated in the battery tray assembly.

15. An electrical equipment, characterized in that: Comprising the battery pack as claimed in claim 14.

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