Battery pack shell, battery pack and electric equipment

Abstract

The utility model provides a battery pack shell, a battery pack and electric equipment, and relates to the field of new energy automobiles. The battery pack shell comprises a tray, an access cover and a bottom protection plate; a containing cavity is formed in the tray and provided with an access hole. The access cover is movably arranged on the tray and closes or opens the access hole; the bottom protection plate is detachably connected with the tray; when the bottom protection plate is connected with the tray, the access cover is located between the bottom protection plate and the tray. The possibility of deformation of the access cover due to collision and the like can be reduced, the possibility of influence on the sealing performance of the battery pack due to deformation of the access cover is reduced, and the sealing performance of the battery pack is further improved.

Description

Technical Field

[0001] This application relates to the field of battery packs, and particularly to battery pack housings, battery packs, and electrical equipment. Background Art

[0002] A battery pack is an important component of an electric vehicle and can provide power for the driving process of the electric vehicle.

[0003] The battery pack may include a tray and a bottom guard plate. The bottom guard plate or the tray may be provided with an inspection opening to enable quick inspection and maintenance of the battery cell module and control components in the battery pack through the inspection opening. The inspection opening is also provided with a movable inspection cover to close or open the inspection opening through the inspection cover. However, the inspection cover is prone to deformation and other conditions, affecting the sealing performance of the battery pack. Summary of the Utility Model

[0004] Embodiments of this application provide a battery pack housing, a battery pack, and electrical equipment to solve the problem that the inspection cover is prone to deformation and other conditions, affecting the sealing performance of the battery pack.

[0005] The battery pack provided by the embodiments of this application includes a tray, an inspection cover, and a bottom guard plate;

[0006] The tray forms a receiving cavity, and the tray is provided with an inspection opening communicating with the receiving cavity;

[0007] The inspection cover is movably arranged on the tray, and the inspection cover closes or opens the inspection opening;

[0008] The bottom guard plate and the tray are detachably connected; when the bottom guard plate and the tray are connected, the inspection cover is located between the bottom guard plate and the tray.

[0009] By adopting the above technical solution, when quickly inspecting and maintaining the battery cell module and control components in the battery pack through the inspection opening, the bottom guard plate can be detached from the tray, exposing the inspection cover that closes the inspection opening, and then the inspection cover can be removed to open the inspection opening, so as to enable quick inspection and maintenance of the battery cell module and control components in the battery pack through the inspection opening.

[0010] When the bottom guard plate and the tray are connected, the inspection cover is located inside the bottom guard plate and the tray, so that the bottom guard plate and the tray can play a certain protective role on the inspection cover, reducing the possibility of deformation and other conditions of the inspection cover due to impacts and other situations, and reducing the possibility of the inspection cover deforming and affecting the sealing performance of the battery pack, further improving the sealing performance of the battery pack.

[0011] In some possible implementation manners, the tray includes a frame and mounting beams connected to the inside of the frame, and the frame and the mounting beams form the inspection opening;

[0012] The first part of the inspection cover is detachably connected to the frame, and the second part of the inspection cover is detachably connected to the mounting beam.

[0013] In some possible embodiments, a protrusion is provided on the bottom surface of the frame, and the surface of the protrusion facing away from the frame is connected to the bottom guard plate;

[0014] When the inspection cover is connected to the tray, the first part of the inspection cover faces the protrusion, the first surface of the inspection cover in the thickness direction fits against the bottom surface of the frame, and the second surface of the inspection cover in the thickness direction faces the bottom guard plate.

[0015] In some possible embodiments, when the inspection cover is connected to the tray, in the height direction of the frame, a part of the protrusion extends out of the surface of the inspection cover facing away from the frame.

[0016] In some possible embodiments, in a plane perpendicular to the height direction of the frame, the surface of the protrusion facing away from the inspection cover is flush with the outer surface of the frame.

[0017] In some possible embodiments, the width of the protrusion is greater than or equal to 1 mm. The width direction of the protrusion is perpendicular to the height direction of the frame.

[0018] In some possible embodiments, a reinforcing part is provided on the inner side of the frame, and the surface of the reinforcing part facing away from the accommodating cavity abuts against the inspection cover.

[0019] In some possible embodiments, in the height direction of the frame, the thickness of the reinforcing part is greater than or equal to 8 mm and less than or equal to 15 mm;

[0020] In a plane perpendicular to the height direction of the frame, the width of the reinforcing part is greater than or equal to 25 mm and less than or equal to 30 mm.

[0021] In some possible embodiments, a mounting groove is provided on the bottom surface of the tray, and the mounting groove is at least used to accommodate the inspection cover;

[0022] When the inspection cover is located in the mounting groove, the inspection cover closes the inspection opening; when the inspection cover is detached from the mounting groove, the mounting groove communicates with the accommodating cavity through the inspection opening.

[0023] In some possible embodiments, a buffer seal is provided on the surface of the inspection cover facing the accommodating cavity, and the surface of the buffer seal facing away from the inspection cover abuts against the tray;

[0024] And / or, a buffer member is disposed on a surface of the inspection cover facing the accommodation cavity, and a surface of the buffer member facing away from the inspection cover is used to connect the battery cell module and the control member.

[0025] In some possible implementation manners, the battery pack further includes a plurality of fastening bolts;

[0026] When the inspection cover is connected to the tray, the fastening bolts penetrate through the inspection cover, and a threaded section of the fastening bolts is threadedly fixed to the tray.

[0027] In some possible implementation manners, the battery pack further includes a bottom plate disposed at a bottom of the tray, and the bottom plate and the tray together form the inspection opening.

[0028] An embodiment of the present application provides a battery pack, including a battery cell module, a control member, and the battery pack housing according to any one of the above embodiments;

[0029] The accommodation cavity of the battery pack housing accommodates the battery cell module and the control member, and the inspection opening faces at least one of the battery cell module and the control member.

[0030] Since the battery pack includes the battery pack housing according to any one of the above, therefore, the battery pack includes the advantages of the battery pack housing according to any one of the above. For specific details, please refer to the relevant descriptions above and will not be elaborated here.

[0031] An embodiment of the present application provides an electrical device, including an electrical device and the above battery pack, and the battery pack is used to provide electrical energy for the electrical device.

[0032] Since the electrical device includes the battery pack according to any one of the above, therefore, the electrical device includes the advantages of the battery pack according to any one of the above. For specific details, please refer to the relevant descriptions above and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0034] Figure 1 It is a schematic structural diagram of the battery pack according to an embodiment of the present application;

[0035] Figure 2 It is a schematic structural diagram at the inspection opening of the battery pack according to an embodiment of the present application;

[0036] Figure 3 It is a schematic structural diagram of the battery pack according to an embodiment of the present application with the bottom protection plate removed;

[0037] Figure 4Schematic diagram of the structure of the inspection cover and the buffer seal for the embodiments of the present application;

[0038] Figure 5 First sectional view at the inspection opening of the battery pack for the embodiments of the present application;

[0039] Figure 6 Second sectional view at the inspection opening of the battery pack for the embodiments of the present application;

[0040] Figure 7 Schematic diagram of the connection mode between the bottom guard plate and the tray for the embodiments of the present application.

[0041] Explanation of reference numerals:

[0042] 100, Tray;

[0043] 110, Frame; 111, Protrusion; 112, Reinforcing portion; 120, Installation beam; 130, Accommodation cavity; 140, Inspection opening; 140a, First inspection opening; 140b, Second inspection opening;

[0044] 200, Inspection cover;

[0045] 200a, First inspection cover; 200b, Second inspection cover; 210, Buffer seal; 220, Buffer member; 230, Fastener;

[0046] 300, Bottom plate;

[0047] 400, Bottom guard plate;

[0048] 410, Connector.

[0049] Through the above drawings, the specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed description of the specific embodiments

[0050] As described in the background art, in a battery pack, the battery pack may include a tray and a bottom guard plate. The bottom guard plate may be disposed at the bottom of the tray, and the tray may form an accommodation cavity for accommodating the battery cell module and the control device. The bottom guard plate or the tray may be provided with an inspection opening to enable quick inspection and maintenance of the battery cell module and the control device in the battery pack through the inspection opening. The inspection opening is also provided with a movable inspection cover to close or open the inspection opening through the inspection cover.

[0051] However, since the inspection cover is usually arranged outside the bottom guard plate and the tray, and the inspection cover is usually located at the bottom or side of the tray, the inspection cover is vulnerable to impacts or water flow impacts. When the inspection cover is impacted or affected by water flow, the inspection cover is prone to force deformation and other conditions, making it difficult for the inspection cover to completely cover the inspection opening, thus affecting the sealing performance of the battery pack.

[0052] To solve the above technical problems, an embodiment of the present application provides a battery pack housing and an automobile. The battery pack housing is configured such that when quickly inspecting and maintaining the battery cell module and the control device in the battery pack through the inspection opening, the bottom guard plate can be detached from the tray, exposing the inspection cover that closes the inspection opening, and then the inspection cover can be disassembled to open the inspection opening, thereby enabling quick inspection and maintenance of the battery cell module and the control device in the battery pack through the inspection opening.

[0053] When the bottom guard plate is connected to the tray, the inspection cover is located inside the bottom guard plate and the tray, so that the bottom guard plate and the tray can play a certain protective role for the inspection cover, reducing the possibility of deformation and other conditions of the inspection cover due to impacts, and reducing the possibility of the inspection cover deforming and affecting the sealing performance of the battery pack housing, further improving the sealing performance of the battery pack housing.

[0054] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0055] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0056] Refer to Figure 1 and Figure 2 As shown, an embodiment of the present application provides a battery pack housing, including a tray 100, an inspection cover 200, and a bottom guard plate 400. The tray 100 forms a receiving cavity 130, and the receiving cavity 130 can at least be used to accommodate the battery cell module and the control device. The receiving cavity 130 is provided with an inspection opening 140 to enable quick inspection and maintenance of the battery cell module and the control device in the battery pack through the inspection opening 140.

[0057] The maintenance cover 200 is movably arranged on the tray 100, and the maintenance cover 200 closes or opens the maintenance opening 140. When the battery pack is in the working state, the maintenance cover 200 is connected to the tray 100, and the maintenance cover 200 closes the maintenance opening 140 to ensure that the accommodating cavity 130 can be in a sealed state. When it is necessary to repair and maintain the battery cell module and the control device, the maintenance cover 200 opens the maintenance opening 140, and the accommodating cavity 130 can communicate with the outside of the battery pack housing through the maintenance opening 140.

[0058] Exemplarily, the bottom guard plate 400 and the tray 100 are detachably connected. When the bottom guard plate 400 and the tray 100 are connected, the maintenance cover 200 is located inside the bottom guard plate 400 and the tray 100, so as to play a certain protective role for the maintenance cover 200 through the bottom guard plate 400 and the tray 100, and reduce the possibility of deformation of the maintenance cover 200 caused by impacts and other situations.

[0059] Referring to Figure 2 and Figure 3 As shown, in some possible implementation manners, the tray 100 may include a frame 110 and mounting beams 120 connected to the inside of the frame 110, so as to play a certain supporting and protecting role for the battery cell module and the control device and other structures in the accommodating cavity 130, thereby reducing the possibility of damage to the battery cell module and control devices such as the distribution box.

[0060] Exemplarily, the mounting beams 120 are arranged inside the frame 110. The number of the mounting beams 120 can be set to one or more. The mounting beams 120 can divide the accommodating cavity 130 into several accommodating areas, so that different accommodating areas of the accommodating cavity 130 can be used to accommodate different devices.

[0061] The number of the mounting beams 120 can be set to multiple. The multiple mounting beams 120 may include a first mounting beam, a second mounting beam, and a third mounting beam.

[0062] Among them, the length direction of the first mounting beam can be parallel to the connection direction of the front side and the rear side of the battery pack housing. The second mounting beam and the third mounting beam can be parallel to each other, and the length direction of the second mounting beam and the third mounting beam can be perpendicular to the length direction of the first mounting beam.

[0063] Both the second mounting beam and the third mounting beam intersect with the first mounting beam. The second mounting beam can be located at the front side of the battery pack housing, and the third mounting beam can be located at the rear side of the battery pack housing.

[0064] The first mounting beam, the second mounting beam, and the third mounting beam can be connected by splicing or other means and relatively fixed by welding or other means. The first mounting beam, the second mounting beam, and the third mounting beam can all be formed by cutting profiles with the same cross-section, making the forming process of the mounting beam 120 more convenient.

[0065] Exemplarily, the frame 110 and the mounting beam 120 can jointly form an access opening 140.

[0066] It is easy to understand that the first mounting beam, the second mounting beam, and the third mounting beam can jointly divide the accommodation cavity 130 with the frame 110 to form several accommodation areas, and some of the accommodation areas can form the access opening 140.

[0067] For example, the number of access openings 140 can be set to multiple. The multiple access openings 140 can include a first access opening 140a and a second access opening 140b, so that the rapid inspection and maintenance of different control components inside the battery pack housing can be realized through the first access opening 140a and the second access opening 140b.

[0068] Among them, the first access opening 140a can be located at the front side of the battery pack housing. The accommodation area surrounded by the first mounting beam, the second mounting beam, and the frame 110 can form the first access opening 140a. The second access opening 140b can be located at the rear side of the battery pack housing. The third mounting beam and the frame 110 can form the second access opening 140b.

[0069] It is easy to understand that the shapes of the first access opening 140a and the second access opening 140b can be determined according to the shapes of the mounting beam 120 and the frame 110. When the length directions of the second mounting beam and the third mounting beam are perpendicular to the length direction of the first mounting beam, the shapes of the first access opening 140a and the second access opening 140b can be set as squares.

[0070] Continue to refer to Figure 2 and Figure 3 As shown, in some possible implementation manners, the battery pack housing may further include a bottom plate 300. The bottom plate 300 is disposed at the bottom of the tray 100. The bottom plate 300 can enclose some accommodation areas to play a certain supporting role for structures such as the battery cell module and the control components inside the battery pack housing through the bottom plate 300.

[0071] The bottom plate 300 can open some accommodation areas to form the access opening 140, so that the number and position of the access opening 140 can be determined by adjusting the shape and setting manner of the bottom plate 300.

[0072] For example, the bottom plate 300 can be connected to the frame 110 and the mounting bracket. The bottom plate 300 can open a partial accommodation area to form a first maintenance opening 140a and a second maintenance opening 140b, so that the control devices in the opened partial accommodation area can be exposed through the first maintenance opening 140a and the second maintenance opening 140b, making the maintenance and repair process of the control devices in the opened partial accommodation area more convenient.

[0073] Exemplarily, the bottom plate 300 can be reused to form structures such as a cold plate, making the functions of the bottom plate 300 more diverse.

[0074] For example, the bottom plate 300 can be set as a direct-cooled bottom plate 300 or a liquid-cooled bottom plate 300. The direct-cooled bottom plate 300 or the liquid-cooled bottom plate 300 can be close to the battery cell module and the control devices in the accommodation cavity 130, thereby accelerating the heat dissipation rate of the battery cell module and the control devices and ensuring the normal operation of the battery cell module and the control devices.

[0075] In the partial accommodation area enclosed by the bottom plate 300, the battery cell module and the control devices can be in contact with the bottom plate 300, so that the heat generated by the battery cell module and the control devices can be transferred to the bottom plate 300 faster. Alternatively, the battery cell module and the control devices can be arranged at intervals from the bottom plate 300, and the battery cell module and the control devices may not be in direct contact with the bottom plate 300.

[0076] The bottom plate 300 can be connected to at least one of the mounting bracket and the frame 110 through fasteners 230 such as bolts or screws. For example, a part of the bottom plate 300 can be fixed to the mounting member, and the remaining part of the bottom plate 300 can be fixed to the frame 110 to make the installation of the bottom plate 300 more stable.

[0077] When the bottom plate 300 is set as a direct-cooled bottom plate 300 or a liquid-cooled bottom plate 300, a flow channel for the cooling medium to flow can be formed in the middle of the bottom plate 300, so as to reduce the temperature of the battery cell module and the control devices through the cooling medium flowing in the flow channel and accelerate the heat dissipation rate of the battery cell module and the control devices.

[0078] The edge of the bottom plate 300 can be used to connect multiple screws or bolts, thereby reducing the possibility of structures such as screws or bolts passing through the flow channel located in the middle of the bottom plate 300, reducing the interference of the screws or bolts on the layout of the flow channel, and making the layout method of the flow channel more flexible.

[0079] In some possible implementation manners, the number of the maintenance covers 200 can be set to one or more. The maintenance covers 200 can be arranged in one-to-one correspondence with the maintenance openings 140, and each maintenance cover 200 can be used to cover the corresponding maintenance opening 140.

[0080] Refer to Figure 3 and Figure 4As shown, the number of the inspection covers 200 can be set to be multiple. The multiple inspection covers 200 can include a first inspection cover 200a and a second inspection cover 200b. The first inspection cover 200a can be used to close or open the first inspection opening 140a, and the second inspection cover 200b can be used to close or open the second inspection opening 140b.

[0081] The thickness of the inspection cover 200 can be set to be greater than or equal to 2 mm and less than or equal to 4 mm. For example, the thickness of the inspection cover 200 can be set to any one of the thickness ranges of 2 mm, 2.5 mm, 3 mm, 3.5 mm, and 4 mm to ensure the strength of the inspection cover 200 and reduce the possibility of deformation of the inspection cover 200.

[0082] Exemplarily, a buffer seal 210 is provided on the surface of the inspection cover 200 facing the accommodation cavity 130. The buffer seal 210 can be set as a first foam. The surface of the first foam facing away from the inspection cover 200 abuts against the tray 100, so as to play a certain buffering and sealing role through the first foam provided between the inspection cover 200 and the tray 100, making the connection between the inspection cover 200 and the tray 100 closer.

[0083] The thickness of the first foam can be set to be greater than or equal to 5 mm. For example, the thickness of the first foam can be set to any one of 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm, so that the first foam can be stably filled between the inspection cover 200 and the tray 100 to ensure the buffering and sealing effects of the first foam.

[0084] Refer to Figure 5 As shown, and / or, a buffer 220 is provided on the surface of the inspection cover 200 facing the accommodation cavity 130. The buffer 220 can be set as a second foam. The surface of the second foam facing away from the inspection cover 200 is used to connect the battery cell module and the control device, so as to play a certain buffering role through the second foam provided between the inspection cover 200 and the battery cell module and the control device, reducing the possibility of direct contact and collision between the inspection cover 200 and the battery cell module and the control device.

[0085] The second foam can be arranged inside the first foam, and the thickness of the second foam can be greater than or equal to the thickness of the first foam, so that the surface of the second foam facing away from the inspection cover 200 can contact the battery cell module and the control device.

[0086] Exemplarily, the battery pack housing can further include a plurality of fasteners 230. The fasteners 230 can be set as fixing bolts, and the plurality of fixing bolts can be arranged on the edge of the inspection cover 200.

[0087] When the inspection cover 200 is connected to the tray 100, the fixing bolts pass through the inspection cover 200, and the threaded sections of the fixing bolts are threadedly connected to the tray 100, so that the inspection cover 200 can be fixed to the tray 100 through a plurality of fixing bolts, thereby improving the connection stability between the inspection cover 200 and the tray 100.

[0088] The frame 110 and the installation beam 120 enclose an inspection opening 140. The first part of the inspection cover 200 is detachably connected to the frame 110, and the second part of the inspection cover 200 is detachably connected to the installation beam 120.

[0089] The first part of the inspection cover 200 may be provided with first part fixing bolts. The first part of the inspection cover 200 can be connected to the frame 110 through the first part fixing bolts. The second part of the inspection cover 200 may be provided with second part fixing bolts. The second part of the inspection cover 200 can be connected to the installation beam 120 through the second part fixing bolts.

[0090] It is easy to understand that when the inspection cover 200 closes the corresponding inspection opening 140, the fixing bolts pass through the inspection cover 200, and the threaded sections of the fixing bolts are threadedly connected to the tray 100. When it is necessary to move the inspection cover 200 away to open the corresponding inspection opening 140, the threaded sections of the fixing bolts can be screwed out of the tray 100, so that the inspection cover 200 can be moved away from the corresponding inspection opening 140, thereby enabling the corresponding inspection opening 140 to be opened.

[0091] In some possible embodiments, an installation groove may be provided on the bottom surface of the tray 100. The installation groove is at least used to accommodate the inspection cover 200, so as to play a certain positioning and limiting role on the inspection cover 200 through the installation groove, so that the threaded sections of the fixing bolts can more easily pass through the inspection cover 200 and be threadedly connected to the tray 100.

[0092] When the inspection cover 200 is located in the installation groove, the inspection cover 200 can close the inspection opening 140. When the inspection cover 200 is separated from the installation groove, the installation groove and the accommodating cavity 130 can communicate through the inspection opening 140.

[0093] The bottom surface of the tray 100 may be recessed inward to form an installation groove. When the inspection cover 200 is located in the installation groove, at least part of the inspection cover 200 may be located inside the tray 100, so as to play a certain shielding and protecting role on the inspection cover 200 through the tray 100, reducing the possibility of damage to the inspection cover 200 and other situations.

[0094] For example, the first maintenance cover 200a is used to close or open the first maintenance opening 140a. The first maintenance cover 200a correspondingly closes the accommodation area enclosed by the first installation beam, the second installation beam, and the frame 110. The bottom surfaces of the first installation beam, the second installation beam, and the frame 110 can jointly recess inward to form an installation groove for accommodating the first maintenance cover 200a.

[0095] Referring Figure 5 and Figure 6 As shown, in some possible implementation manners, a protrusion 111 is provided on the bottom surface of the frame 110, and the surface of the protrusion 111 facing away from the frame 110 is connected to the bottom guard plate 400. When the maintenance cover 200 is connected to the tray 100, the first part of the maintenance cover 200 faces the protrusion 111, the first surface of the maintenance cover 200 is attached to the bottom surface of the frame 110, and the second surface of the maintenance cover 200 faces the bottom guard plate 400.

[0096] When the maintenance cover 200 is connected to the tray 100, the protrusion 111 is located outside the maintenance cover 200 to play a certain supporting and protecting role for the maintenance cover 200 through the protrusion 111. When the battery pack housing is impacted from the side, the protrusion 111 can play a certain supporting role, reducing the possibility of the maintenance cover 200 being impacted, and thus reducing the possibility of the maintenance cover 200 deforming.

[0097] The protrusion 111 can be integrally provided with the frame 110 to make the connection between the protrusion 111 and the frame 110 more stable. Alternatively, the protrusion 111 can be connected to the frame 110 by welding or other means, and the frame 110 and the mounting bracket can be made of the same profile structure to make the forming process of the frame 110 and the mounting bracket more convenient.

[0098] Exemplarily, when the maintenance cover 200 is connected to the tray 100, in the height direction of the frame 110, a part of the protrusion 111 extends out of the surface of the maintenance cover 200 facing away from the frame 110, that is, in the height direction of the frame 110, the maintenance cover 200 is located inside the protrusion 111, further reducing the possibility of the maintenance cover 200 and the first foam being impacted.

[0099] It should be noted that in the related art, considering the working conditions of the battery pack housing during actual operation, when the vehicle to which the battery pack housing is applied maintains a high-speed traveling state, the side and bottom surfaces of the battery pack housing are easily impacted by debris such as stones, or when the vehicle is in a wading state, the side and bottom surfaces of the battery pack housing are easily impacted by high-speed water flow, making the maintenance cover 200 prone to deformation and other situations.

[0100] In the battery pack housing according to the embodiment of the present application, by arranging the maintenance cover 200 between the tray 100 and the bottom guard plate 400, and providing a protruding portion 111 on the bottom surface of the frame 110, the bottom guard plate 400 and the protruding portion 111 can play a certain protective role for the maintenance cover 200, reducing the possibility of the maintenance cover 200 being impacted.

[0101] When the bottom surface of the battery pack housing is impacted by stones or high-speed water flow, the bottom guard plate 400 located below the maintenance cover 200 can play a certain shielding and protective role for the maintenance cover 200, so that the stones or high-speed water flow will not directly impact the maintenance cover 200 from below.

[0102] When the side surface of the battery pack housing is impacted by stones or high-speed water flow, the protruding portion 111 located on the side surface of the maintenance cover 200 can play a certain shielding and protective role for the maintenance cover 200, so that the stones or high-speed water flow will not directly impact the maintenance cover 200 from the side.

[0103] Exemplarily, in a plane perpendicular to the height direction of the frame 110, the surface of the protruding portion 111 facing away from the maintenance cover 200 can be flush with the outer surface of the frame 110.

[0104] In a plane perpendicular to the height direction of the frame 110, the width of the protruding portion 111 can be greater than or equal to 1 mm. The width of the protruding portion 111 can be set to any one of 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, and 2 mm. The width direction of the protruding portion 111 can be parallel to the thickness direction of the frame 110.

[0105] When the side surface of the battery pack housing is impacted by stones or high-speed water flow, the protruding portion 111 will come into contact with the stones or high-speed water flow. By setting the width of the protruding portion 111 to be greater than or equal to 1 mm, the possibility of deformation of the protruding portion 111 and other situations can be reduced, and the possibility of the protruding portion 111 breaking and the stones or high-speed water flow directly impacting the maintenance cover 200 and the first foam can be reduced.

[0106] It should be noted that when the width of the protruding portion 111 is uneven, that is, the width of some positions of the protruding portion 111 is larger and the width of some positions of the protruding portion 111 is smaller, the maximum value of the width of the protruding portion 111 can be greater than or equal to 1 mm, and the minimum value of the width of the protruding portion 111 can be less than 1 mm.

[0107] Continue to refer to Figure 5 and Figure 6As shown, in some possible embodiments, a reinforcing portion 112 may be provided on the inner side of the frame 110. The surface of the reinforcing portion 112 facing away from the accommodation cavity 130 may be in contact with the inspection cover 200, so as to play a certain overlapping and supporting role on the inspection cover 200 through the reinforcing portion 112, making the connection between the inspection cover 200 and the frame 110 more stable.

[0108] Exemplarily, the reinforcing portion 112 may be integrally provided with the frame 110 to make the connection between the reinforcing portion 112 and the frame 110 more stable. Alternatively, the reinforcing portion 112 may be connected to the frame 110 by means such as welding. The frame 110 and the mounting bracket may be made of the same profile structure, so as to make the forming process of the frame 110 and the mounting bracket more convenient.

[0109] The reinforcing portion 112 may be integrally provided with the protruding portion 111 to make the connection between the reinforcing portion 112 and the protruding portion 111 more stable. And the reinforcing portion 112 and the protruding portion 111 may be connected to the frame 110 together, so that the frame 110 can be made of the same profile structure as the mounting bracket.

[0110] In the height direction of the frame 110, the thickness of the reinforcing portion 112 may be greater than or equal to 8 mm and less than or equal to 15 mm. For example, the thickness of the reinforcing portion 112 may be set to one of 8 mm, 10 mm, 12 mm, and 15 mm to ensure the support strength of the reinforcing portion 112 and reduce the possibility of the reinforcing portion 112 breaking.

[0111] In the plane perpendicular to the height direction of the frame 110, the width of the reinforcing portion 112 is greater than or equal to 25 mm and less than or equal to 30 mm. For example, the width of the reinforcing portion 112 may be set to one of 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, and 30 mm.

[0112] It should be noted that by setting the width of the reinforcing portion 112 to be greater than or equal to 25 mm, the contact area between the inspection cover 200 and the reinforcing portion 112 can be increased, and the contact stability between the reinforcing portion 112 and the inspection cover 200 can be improved. By setting the width of the reinforcing portion 112 to be less than or equal to 30 mm, the influence of the reinforcing portion 112 on the size of the inspection opening 140 can be reduced, ensuring that the size of the inspection opening 140 will not be affected by the reinforcing portion 112.

[0113] Refer to Figure 7 As shown, in some possible embodiments, the bottom guard plate 400 and the tray 100 are detachably connected. The bottom guard plate 400 may be connected to the tray 100 through a connecting member 410 such as a screw or a bolt, so as to make the connection between the bottom guard plate 400 and the tray 100 more stable.

[0114] In summary, the battery pack housing is configured such that when the battery cell module and the control device in the battery pack housing are quickly inspected and maintained through the inspection opening 140, the bottom guard plate 400 can be removed from the tray 100, exposing the inspection cover 200 that closes the inspection opening 140. Then, the inspection cover 200 can be removed to open the inspection opening 140, thereby enabling the quick inspection and maintenance of the battery cell module and the control device in the battery pack through the inspection opening 140.

[0115] When the bottom guard plate 400 is connected to the tray 100, the inspection cover 200 is located inside the bottom guard plate 400 and the tray 100, so that the bottom guard plate 400 and the tray 100 can provide a certain degree of protection for the inspection cover 200, reducing the possibility of deformation of the inspection cover 200 due to impacts or other situations, and reducing the possibility that the deformation of the inspection cover 200 affects the sealing performance of the battery pack, further improving the sealing performance of the battery pack.

[0116] The embodiment of the present application further provides a battery pack, including a battery cell module, a control device, and the battery pack housing described in any of the above embodiments, and the inspection opening 140 of the battery pack housing faces at least one of the battery cell module and the control device.

[0117] The embodiment of the present application further provides an electrical device, including an electrical device and the battery pack described in any of the above embodiments, and the battery pack is used to provide electrical energy for the electrical device.

[0118] The electrical device in the embodiment of the present application can be a vehicle. For example, the vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Correspondingly, the electrical device can be a driving mechanism of the vehicle or a control system of the vehicle.

[0119] In addition, the electrical device can also be other energy storage devices, such as mobile phones, portable devices, laptop computers, electric toys, electric tools, ships, and spacecrafts, etc. Among them, the spacecraft can include airplanes, rockets, space shuttles, or spaceships.

[0120] In view of the fact that the electrical device in this embodiment includes the battery pack described in any of the above embodiments, therefore, the electrical device includes the battery pack structure and beneficial effects, which will not be elaborated herein in this embodiment.

[0121] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0122] In the description of the present utility model, it should be understood that the terms "comprising" and "having" used herein and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0123] Unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, which can be the connection inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A battery pack housing, characterized in that, It includes a tray (100), an inspection cover (200) and a bottom guard plate (400); The tray (100) forms a receiving cavity (130), and the tray (100) is provided with an inspection opening (140) communicating with the receiving cavity (130); The inspection cover (200) is movably arranged on the tray (100), and the inspection cover (200) closes or opens the inspection opening (140); The bottom guard plate (400) and the tray (100) are detachably connected; when the bottom guard plate (400) and the tray (100) are connected, the inspection cover (200) is located between the bottom guard plate (400) and the tray (100).

2. The battery pack housing according to claim 1, wherein The tray (100) includes a frame (110), and a mounting beam (120) connected to the inner side of the frame (110), and the frame (110) and the mounting beam (120) form the inspection opening (140); The first part of the inspection cover (200) is detachably connected to the frame (110), and the second part of the inspection cover (200) is detachably connected to the mounting beam (120).

3. The battery pack housing according to claim 2, wherein The bottom surface of the frame (110) is provided with a protruding portion (111), and the surface of the protruding portion (111) facing away from the frame (110) is connected to the bottom guard plate (400); When the inspection cover (200) is connected to the tray (100), the first part of the inspection cover (200) faces the protruding portion (111), the first surface of the inspection cover (200) in the thickness direction is attached to the bottom surface of the frame (110), and the second surface of the inspection cover (200) in the thickness direction faces the bottom guard plate (400).

4. The battery pack housing according to claim 3, wherein, When the inspection cover (200) is connected to the tray (100), in the height direction of the frame (110), a part of the protruding portion extends out of the surface of the inspection cover (200) facing away from the frame (110).

5. The battery pack housing according to claim 3, characterized in that, In a plane perpendicular to the height direction of the frame (110), the surface of the protruding portion (111) facing away from the inspection cover (200) is flush with the outer surface of the frame (110).

6. The battery pack housing according to claim 5, characterized in that, The width of the protruding portion (111) is greater than or equal to 1 mm, and the width direction of the protruding portion (111) is perpendicular to the height direction of the frame (110).

7. The battery pack housing according to claim 2, wherein, The inner side of the frame (110) is provided with a reinforcing portion (112), and the surface of the reinforcing portion (112) facing away from the receiving cavity (130) abuts against the inspection cover (200).

8. The battery pack housing according to claim 7, characterized in that, In the height direction of the frame (110), the thickness of the reinforcing portion (112) is greater than or equal to 8 mm and less than or equal to 15 mm; In a plane perpendicular to the height direction of the frame (110), the width of the reinforcing portion (112) is greater than or equal to 25 mm and less than or equal to 30 mm.

9. The battery pack housing according to any one of claims 1-8, characterized in that, The bottom surface of the tray (100) is provided with a mounting groove for at least accommodating the inspection cover (200); When the inspection cover (200) is located within the installation groove, the inspection cover (200) closes the inspection opening (140); when the inspection cover (200) is disengaged from the installation groove, the installation groove communicates with the accommodation cavity (130) through the inspection opening (140).

10. The battery pack housing according to claim 9, wherein, A buffer seal (210) is provided on the surface of the inspection cover (200) facing the accommodation cavity (130), and the surface of the buffer seal (210) facing away from the inspection cover (200) abuts against the tray (100); and / or, a buffer member (220) is provided on the surface of the inspection cover (200) facing the accommodation cavity (130), and the surface of the buffer member (220) facing away from the inspection cover (200) is used to connect the battery cell module and the control device.

11. The battery pack housing according to any one of claims 1-8, characterized in that, A buffer seal (210) is provided on the surface of the inspection cover (200) facing the accommodation cavity (130), and the surface of the buffer seal (210) facing away from the inspection cover (200) abuts against the tray (100); and / or, a buffer member (220) is provided on the surface of the inspection cover (200) facing the accommodation cavity (130), and the surface of the buffer member (220) facing away from the inspection cover (200) is used to connect the battery cell module and the control device.

12. The battery pack housing according to claim 9, wherein, The battery pack housing further includes a plurality of fasteners (230); When the inspection cover (200) is connected to the tray (100), the fasteners (230) pass through the inspection cover (200), and the fasteners (230) are fixedly connected to the tray (100).

13. The battery pack housing according to claim 10, characterized in that, The battery pack housing further includes a plurality of fasteners (230); When the inspection cover (200) is connected to the tray (100), the fasteners (230) pass through the inspection cover (200), and the fasteners (230) are fixedly connected to the tray (100).

14. The battery pack housing according to claim 11, wherein, The battery pack housing further includes a plurality of fasteners (230); When the inspection cover (200) is connected to the tray (100), the fasteners (230) pass through the inspection cover (200), and the fasteners (230) are fixedly connected to the tray (100).

15. The battery pack housing according to any one of claims 1-8, characterized in that, The battery pack housing further includes a plurality of fasteners (230); When the inspection cover (200) is connected to the tray (100), the fasteners (230) pass through the inspection cover (200), and the fasteners (230) are fixedly connected to the tray (100).

16. The battery pack housing according to claim 9, characterized in that, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the inspection opening (140).

17. The battery pack housing according to claim 10, wherein, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the inspection opening (140).

18. The battery pack housing according to claim 11, characterized in that, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the maintenance opening (140).

19. The battery pack housing according to claim 12, wherein, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the maintenance opening (140).

20. The battery pack housing according to claim 13, wherein, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the maintenance opening (140).

21. The battery pack housing according to claim 14, wherein, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the maintenance opening (140).

22. The battery pack housing according to any one of claims 1-8, characterized in that, The battery pack housing further includes a bottom plate (300), the bottom plate (300) is disposed at the bottom of the tray (100), and the bottom plate (300) and the tray (100) together form the maintenance opening (140).

23. A battery pack, characterized in that, It includes a battery cell module, a control device, and the battery pack housing according to any one of claims 1-22; The accommodation cavity (130) of the battery pack housing accommodates the battery cell module and the control device, and the maintenance opening (140) faces at least one of the battery cell module and the control device.

24. An electrical device, characterized in that, It includes an electrical device and the battery pack according to claim 23, and the battery pack is used to supply electrical energy to the electrical device.

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