A battery box base tray

Abstract

This utility model relates to the field of battery boxes, specifically to a battery box base support. The battery box base support includes a frame assembly, a guide assembly, and an electrical connection assembly. The frame assembly includes a frame unit, a leg unit, and a diagonal bracing unit. The frame unit has a symmetrically arranged first and second side. The leg unit includes a first leg and a second leg, which are respectively connected to the frame unit. The first and second legs are located on the same side of the frame unit and spaced apart. One end of the diagonal bracing unit is connected to the first leg and / or the second leg, and the other end is connected to the frame unit. The guide assembly includes a first guide unit, a second guide unit, and a locking unit. Both the first and second guide units have one end connected to the frame unit, and the other end extends outward from the first side towards the second side. The electrical connection assembly includes a connector. The connector is connected to the frame unit. This solves the problem of insufficient strength in the battery box base support.

Description

Technical Field

[0001] This utility model relates to the field of battery boxes, and more specifically, to a battery box base support. Background Technology

[0002] Battery boxes are typically fixed to mining trucks via support structures such as base brackets. The base bracket, as a crucial component connecting the battery box to the truck body, primarily bears the weight of the battery box and withstands vibrations and impacts from road bumps during truck operation, ensuring stable installation of the battery box. Patent document CN116749825B discloses a base bracket for a saddle-type battery swapping box used in new energy vehicles, comprising an upper section and a lower section. The upper section includes a rectangular frame; the lower section includes two symmetrically spaced irregularly shaped sub-beams, each sub-beam divided into three segments. The first and third segments are parallel, and the second segment connects to both the first and third segments at one end. The distance between the first segments of the two sub-beams is greater than the distance between the third segments. The upper and lower sections are fixedly connected. By symmetrically and spaced-apart irregularly shaped sub-beams in the lower section of the base bracket, the connection between the lower section and the irregularly shaped frame is more robust.

[0003] However, when using vehicles requiring high chassis strength, such as mining trucks, ordinary chassis are insufficient to effectively withstand the vibrations and impacts generated by the large size and weight of the battery pack, as well as the bumpy roads the mining truck travels on. During prolonged use on bumpy roads, the chassis may deform or break due to insufficient strength, leading to loosening of the battery pack's fixation to the truck. As the loosening worsens, the battery pack may tip over. Utility Model Content

[0004] To address the problem of insufficient strength in the battery box base support, this utility model provides a battery box base support, comprising:

[0005] A frame assembly includes a frame unit, a leg unit, and a tie rod unit. The frame unit has a symmetrically arranged first and second side surface. The leg unit includes a first leg and a second leg. The first and second legs are respectively connected to the frame unit and abut against the first side surface. The first and second legs are located on the same side of the frame unit and spaced apart. One end of the tie rod unit is connected to the first leg and / or the second leg, and the other end is connected to the frame unit and abuts against the first side surface.

[0006] A guiding assembly includes a first guiding unit, a second guiding unit, and a locking unit; one end of the first guiding unit is connected to the frame unit, and the other end extends outward from the second surface in a direction away from the first surface; one end of the second guiding unit is connected to the frame unit, and the other end extends outward from the second surface in a direction away from the first surface; the length of the first guiding unit extending outward from the second surface is greater than the length of the second guiding unit extending outward from the second surface; the locking unit is connected to the first guiding unit.

[0007] An electrical connection assembly, the electrical connection assembly including a connector; the connector being connected to the frame unit.

[0008] In some embodiments, the frame unit includes two first main beams, two second main beams, and at least two third main beams; the two first main beams are spaced apart; one end of the second main beam is connected to one of the first main beams, and the other end is connected to another first main beam; the two first main beams and the two second main beams form a hollow frame; one end of the third main beam is connected to one of the first main beams, and the other end is connected to another first main beam; the third main beam is disposed within the hollow frame; the second main beams and the third main beams are spaced apart.

[0009] The cable-stayed unit includes at least two first cable-stays and two second cable-stays; at least one first cable-stay has one end connected to the first support leg and the other end extending towards and connecting to the first main beam; at least one first cable-stay has one end connected to the second support leg and the other end extending towards and connecting to the first main beam; one second cable-stay has one end connected to the first support leg and the other end extending towards and connecting to the third main beam; one second cable-stay has one end connected to the second support leg and the other end extending towards and connecting to the third main beam; the first cable-stays and the second cable-stays are spaced apart.

[0010] In some embodiments, the frame unit further includes a through hole; at least one of the through holes extends through the third main beam and is located near the connection between the third main beam and the second cable tie.

[0011] In some embodiments, the first cable tie includes two first long cable ties and two first short cable ties; one end of one first long cable tie is connected to the first support leg, and the other end extends toward a direction close to a second main beam and is connected to a first main beam; one end of one first long cable tie is connected to the second support leg, and the other end extends toward a direction close to another second main beam and is connected to a first main beam; one end of one first short cable tie is connected to the first support leg, and the other end extends toward a direction close to a second main beam and is connected to another first main beam; one end of one first short cable tie is connected to the second support leg, and the other end extends toward a direction close to another second main beam and is connected to another first main beam.

[0012] In some embodiments, the first guide unit includes a first support column and a first guide portion; the first support column is connected to the first guide portion; the first support column is connected to the first main beam; the first guide portion extends from the connection point between the first guide portion and the first support column toward a direction away from the first support column to form a second surface.

[0013] In some embodiments, the second guide unit includes a second support column and a second guide portion; the second support column is connected to the second guide portion; the second support column is connected to the frame assembly; the second guide portion extends from the connection point between the second guide portion and the second support column in a direction away from the second support column to extend a second surface; the length of the second guide portion extending out of the second surface is less than the length of the first guide portion extending out of the second surface.

[0014] In some embodiments, the first guide unit further includes a mounting hole; the mounting hole penetrates the first support column;

[0015] The locking unit includes a driving part, a connecting part, and a locking tongue; one end of the connecting part is connected to the driving part, and the other end is connected to the locking tongue; the driving part is connected to the first guide part; the connecting part passes through the mounting hole;

[0016] The locking unit includes a locked state and an unlocked state; the locked state includes a situation where the projection of the locking tongue on the second surface and the projection of the first main beam on the second surface overlap; the unlocked state includes a situation where the projection of the locking tongue on the second surface and the projection of the first main beam on the second surface are spaced apart.

[0017] In some embodiments, the electrical connection assembly includes a floating unit; the connector is connected to the frame unit via the floating unit; when the connector is subjected to an external force, the floating unit deforms.

[0018] In some embodiments, the electrical connection assembly includes a charging port; the charging port is connected to the frame unit; and the charging port is electrically connected to the connector.

[0019] In some embodiments, the frame assembly further includes a base plate; and a connection between the base plate and the first surface of the frame unit.

[0020] To address the problem of insufficient strength in the battery box base, this utility model has the following advantages:

[0021] By incorporating a diagonal bracing unit within the frame assembly of the battery box base, one end of the diagonal bracing unit connects to the first and / or second support leg, while the other end connects to the frame unit and abuts against the first side surface of the frame unit. This structure allows the diagonal bracing unit to form a triangular support structure between the support leg unit and the frame unit. Utilizing the stability principle of a triangle, this effectively disperses the gravitational load generated by the large size and weight of the battery box, as well as the vibration and impact loads transmitted to the base when the mining truck travels on bumpy roads. This structural design enhances the base's strength, ultimately resolving the problem of insufficient base strength causing the battery box to become loose or even tip over on the mining truck, ensuring the battery box remains stably installed during the mining truck's operation. Attached Figure Description

[0022] Figure 1 A schematic diagram of the battery box base of one embodiment is shown;

[0023] Figure 2 A schematic diagram of the battery box base of one embodiment is shown.

[0024] Reference numerals: 01 Frame assembly; 11 Frame unit; 111 First main beam; 112 Second main beam; 113 Third main beam; 114 Through hole; 12 Leg unit; 121 First leg; 122 Second leg; 13 Diagonal brace unit; 131 First diagonal brace; 1311 First long diagonal brace; 1312 First short diagonal brace; 132 Second diagonal brace; 14 Base plate; 15 Shock-absorbing pad; 16 Support plate; 02 Guide assembly; 21 First guide unit; 211 First support column; 212 First guide part; 213 Mounting hole; 22 Second guide unit; 221 Second support column; 222 Second guide part; 23 Locking unit; 231 Drive part; 232 Locking tongue; 24 Anti-misalignment rod; 03 Electrical connection assembly; 31 Connector; 32 Charging port; 33 Floating unit. Detailed Implementation

[0025] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0026] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0027] In practical applications of mining trucks, these trucks often travel on bumpy roads, and their battery boxes are large and heavy due to high energy demands. The battery box is fixed to the truck via a base frame, with outriggers providing primary support. Because the truck experiences vibrations and impacts from bumpy roads, the weight of the battery box and external loads are transferred to the frame via the outriggers. However, if the overall strength of the connection structure between the outriggers and the frame is insufficient to withstand the aforementioned gravitational, vibration, and impact loads, it is difficult to effectively resist the stress generated by the loads. Under prolonged conditions like these, the connection between the outriggers and the frame is prone to deformation or loosening, leading to decreased stability of the battery box on the truck and a risk of the battery box tipping over due to loosening. This embodiment provides a battery box base, such as... Figure 1As shown, the battery box base includes a frame assembly 01, a guide assembly 02, and an electrical connection assembly 03. The frame assembly 01 may include a frame unit 11, a support leg unit 12, and a diagonal bracing unit 13. The side of the frame unit 11 may include a symmetrically arranged first surface and a second surface, wherein the second surface is the surface on which the base and the battery box are assembled. The support leg unit 12 may include a first support leg 121 and a second support leg 122. The first support leg 121 and the second support leg 122 can be connected to the frame unit 11 respectively and abut against the first surface. The first support leg 121 and the second support leg 122 can be arranged on the same side of the frame unit 11 and spaced apart. One end of the diagonal bracing unit 13 can be connected to the first support leg 121 and / or the second support leg 122, and the other end can be connected to the frame unit 11 and abut against the first surface. A multi-directional support system can be formed by the triangular connection structure between the support leg unit 12 and the inclined bracing unit 13. The design of connecting the inclined bracing unit 13 and the frame unit 11 can convert vibration load into tensile force, thereby improving the overall structural strength of the base and solving the problem of loosening caused by insufficient strength.

[0028] The guide assembly 02 may include a first guide unit 21, a second guide unit 22, and a locking unit 23. One end of the first guide unit 21 can be connected to the frame unit 11, and the other end can extend outwards towards a second surface away from the first surface. One end of the second guide unit 22 can be connected to the frame unit 11, and the other end can extend outwards towards a second surface away from the first surface. The length of the first guide unit 21 extending outwards towards the second surface can be greater than the length of the second guide unit 22 extending outwards towards the second surface, thereby achieving graded guidance. The locking unit 23 can be connected to the first guide unit 21, thereby integrating the structures that can play a guiding and locking role together, simplifying the structure. By having different extension lengths for the first guide unit 21 and the second guide unit 22, a stepped guide structure can be formed, achieving precise alignment and installation of the base and the battery box.

[0029] Electrical connection assembly 03 may include connector 31. Connector 31 can be connected to frame unit 11, and connector 31 can be used to realize electrical connection between battery box and vehicle. The connection between connector 31 and frame unit 11 can maintain contact stability of electrical interface in vibration environment and prevent poor contact due to displacement.

[0030] In this embodiment, as Figure 1As shown, the frame unit 11 may include two first main beams 111, two second main beams 112, and at least two third main beams 113. The two first main beams 111 may be spaced apart, and one end of each second main beam 112 may be connected to one of the first main beams 111, and the other end may be connected to the other first main beam 111. The two first main beams 111 and the two second main beams 112 can form a hollow frame. One end of each third main beam 113 may be connected to one of the first main beams 111, and the other end may be connected to the other first main beam 111. The third main beam 113 may be disposed within the hollow frame. The second main beams 112 and the third main beams 113 may be spaced apart. Through the hollow frame and the spaced-apart third main beams 113, a multi-level load-bearing structure can be constructed to disperse the bending stress generated by dynamic loads.

[0031] In this embodiment, as Figure 2 As shown, the cable-stayed unit 13 may include at least two first cable-stayed braces 131 and two second cable-stayed braces 132. At least one first cable-stayed brace 131 may be connected at one end to a first support leg 121, and the other end may extend towards and connect to a second main beam 111; at least one first cable-stayed brace 131 may be connected at one end to a second support leg 122, and the other end may extend towards and connect to another second main beam 112. One second cable-stayed brace 132 may be connected at one end to a first support leg 121, and the other end may extend towards and connect to a second main beam 112 and connect to a third main beam 113; one second cable-stayed brace 132 may be connected at one end to a second support leg 122, and the other end may extend towards and connect to another second main beam 112 and connect to another third main beam 113. The first cable-stayed braces 131 and the second cable-stayed braces 132 may be arranged alternately. By symmetrically distributing the first inclined brace 131 and the second inclined brace 132 on both sides of the support leg unit 12, a cross force transmission path can be formed, making the stress distribution of the base support more balanced and avoiding local overload.

[0032] In this embodiment, as Figure 1 As shown, the frame unit 11 may also include a through hole 114. The through hole 114 allows electrical conduits to pass through, thereby simplifying the conduit routing. At least one through hole 114 may penetrate the third main beam 113 and be located near the connection between the third main beam 113 and the second diagonal brace 132. By positioning the through hole 114 at the connection between the third main beam 113 and the second diagonal brace 132, the second diagonal brace 132 can compensate for the strength loss caused by the opening area, ensuring that the base support is strong enough to maintain the stability of the battery box during operation.

[0033] In this embodiment, as Figure 2As shown, the first cable tie 131 may include two first long cable ties 1311 and two first short cable ties 1312. One end of a first long cable tie 1311 may be connected to a first support leg 121, and the other end may extend towards and connect to a first main beam 111; one end of a first long cable tie 1311 may be connected to a second support leg 122, and the other end may extend towards and connect to another second main beam 112. One end of a first short cable tie 1312 may be connected to a first support leg 121, and the other end may extend towards and connect to another second main beam 111; one end of a first short cable tie 1312 may be connected to a second support leg 122, and the other end may extend towards and connect to another second main beam 112. By combining the first long inclined brace 1311 and the first short inclined brace 1312, the overall strength of the base can be guaranteed while the compact structure of the first short inclined brace 1312 can be used to avoid interference with other parts of the vehicle when the base is installed on the vehicle.

[0034] In this embodiment, as Figure 1 As shown, the first guide unit 21 may include a first support column 211 and a first guide portion 212. The first support column 211 may be connected to the first guide portion 212. The first support column 211 may be connected to the first main beam 111. The first guide portion 212 may extend a second surface from the connection point between the first guide portion 212 and the first support column 211 in a direction away from the first support column 211. Through the rigid connection structure between the first support column 211 and the first guide portion 212, a stable guide reference surface can be formed to ensure installation positioning accuracy.

[0035] In this embodiment, as Figure 1 As shown, the second guide unit 22 may include a second support column 221 and a second guide portion 222. The second support column 221 can be connected to the second guide portion 222. The second support column 221 can be connected to the frame assembly 01. The second guide portion 222 extends a second surface from the connection point between the second guide portion 222 and the second support column 221 in a direction away from the second support column 221. The length of the second guide portion 222 extending to the second surface can be less than the length of the first guide portion 212 extending to the second surface. By forming a stepped guiding effect through the first guide portion 212 and the second guide portion 222 of different lengths, staged positioning calibration can be achieved, improving installation accuracy.

[0036] In this embodiment, as Figure 1As shown, the first guide unit 21 may further include a mounting hole 213. The mounting hole 213 can penetrate the first support post 211. The locking unit 23 may include a drive part 231, a connecting part, and a locking tongue 232. One end of the connecting part can be connected to the drive part 231, and the other end can be connected to the locking tongue 232. The drive part 231 can be connected to the first guide part 212. The connecting part can penetrate the mounting hole 213. The drive part 231 can drive the locking tongue 232 to move through the connecting part.

[0037] The locking unit 23 can include a locked state and an unlocked state: the locked state can include the projection of the locking tongue 232 on the second surface coinciding with the projection of the first main beam 111 on the second surface; the unlocked state can include the projection of the locking tongue 232 on the second surface being spaced apart from the projection of the first main beam 111 on the second surface. By controlling the positional relationship between the locking tongue 232 and the first main beam 111 through the drive unit 231, the locking tongue 232 can lock the battery box frame and the first main beam 111 together, preventing vibration from causing the battery box to loosen.

[0038] In this embodiment, as Figure 1 As shown, the electrical connection assembly 03 may include a floating unit 33. The connector 31 can be connected to the frame unit 11 via the floating unit 33. When the connector 31 is subjected to external force, the floating unit 33 can deform. Through the elastic deformation capability of the floating unit 33, the impact energy generated by vehicle bumps can be absorbed, protecting the connector 31 from rigid impact damage.

[0039] In this embodiment, as Figure 2 As shown, the electrical connection assembly 03 may include a charging port 32. The charging port 32 can be connected to the frame unit 11, and the charging port 32 can be electrically connected to the connector 31. Through the direct electrical connection between the charging port 32 and the connector 31, the battery box can be fast-charging, ensuring the integrity of the energy transmission path.

[0040] In this embodiment, as Figure 2 As shown, the frame assembly 01 may also include a base plate 14. The base plate 14 can be connected to the first surface of the frame unit 11. The connection between the base plate 14 and the first surface of the frame unit 11 forms a protective barrier to prevent external foreign objects from entering the battery box.

[0041] In another embodiment, such as Figure 1As shown, the frame assembly 01 may further include a shock-absorbing pad 15 and a support plate 16. One side of the shock-absorbing pad 15 is connected to the frame unit 11, and the other side extends outwards in a direction away from the first surface, forming a second surface. One side of the support plate 16 is connected to the frame unit 11, and the other side extends outwards in a direction away from the first surface, forming a second surface. Thus, when assembling the battery box and the base, the battery box can first fall onto the shock-absorbing pad 15, which can buffer the impact force from the battery box falling. After the shock-absorbing pad 15 deforms and compresses, the battery box abuts against the support plate 16, reducing wear caused by direct contact between the battery box and the frame assembly 01.

[0042] In another embodiment, such as Figure 1 As shown, the guide assembly 02 also includes an anti-misalignment rod 24. One end of the anti-misalignment rod 24 is connected to the frame unit 11, and the other end extends outward from the first surface to the second surface. When assembling the battery box and the base, if the battery box is oriented incorrectly, the presence of the anti-misalignment rod 24 prevents the incorrectly oriented battery box from being successfully installed, thereby avoiding installation errors.

[0043] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A battery box base tray, characterized in that, The battery box base includes: A frame assembly includes a frame unit, a leg unit, and a tie rod unit. The frame unit has a symmetrically arranged first and second side surface. The leg unit includes a first leg and a second leg. The first and second legs are respectively connected to the frame unit and abut against the first side surface. The first and second legs are located on the same side of the frame unit and spaced apart. One end of the tie rod unit is connected to the first leg and / or the second leg, and the other end is connected to the frame unit and abuts against the first side surface. A guiding assembly includes a first guiding unit, a second guiding unit, and a locking unit; one end of the first guiding unit is connected to the frame unit, and the other end extends outward from the second surface in a direction away from the first surface; one end of the second guiding unit is connected to the frame unit, and the other end extends outward from the second surface in a direction away from the first surface; the length of the first guiding unit extending outward from the second surface is greater than the length of the second guiding unit extending outward from the second surface; the locking unit is connected to the first guiding unit. An electrical connection assembly, the electrical connection assembly including a connector; the connector being connected to the frame unit.

2. The battery box base according to claim 1, characterized in that, The frame unit includes two first main beams, two second main beams, and at least two third main beams; the two first main beams are spaced apart; one end of the second main beam is connected to one of the first main beams, and the other end is connected to another first main beam; the two first main beams and the two second main beams form a hollow frame; one end of the third main beam is connected to one of the first main beams, and the other end is connected to another first main beam; the third main beam is disposed within the hollow frame; the second main beams and the third main beams are spaced apart. The cable-stayed unit includes at least two first cable stays and two second cable stays; at least one first cable stay is connected at one end to the first support leg and extends toward a second main beam and is connected to the first main beam; at least one first cable stay is connected at one end to the second support leg and extends toward another second main beam and is connected to the first main beam. One of the second diagonal braces is connected at one end to the first support leg, and the other end extends toward a second main beam and is connected to a third main beam; one of the second diagonal braces is connected at one end to the second support leg, and the other end extends toward another second main beam and is connected to another third main beam; the first diagonal brace and the second diagonal brace are arranged at intervals.

3. A battery box base according to claim 2, characterized in that, The frame unit also includes a through hole; at least one of the through holes extends through the third main beam and is located near the connection between the third main beam and the second diagonal brace.

4. A battery box base according to claim 2, characterized in that, The first cable tie includes two first long cable ties and two first short cable ties; one end of one first long cable tie is connected to the first support leg, and the other end extends toward a second main beam and is connected to the first main beam; One of the first long cable stays is connected at one end to the second leg, and the other end extends toward the other second main beam and is connected to the first main beam; one of the first short cable stays is connected at one end to the first leg, and the other end extends toward the other second main beam and is connected to the other first main beam; one of the first short cable stays is connected at one end to the second leg, and the other end extends toward the other second main beam and is connected to the other first main beam.

5. A battery box base according to claim 2, characterized in that, The first guide unit includes a first support column and a first guide portion; the first support column is connected to the first guide portion; the first support column is connected to the first main beam; the first guide portion extends from the connection point between the first guide portion and the first support column in a direction away from the first support column to form a second surface.

6. A battery box base according to claim 5, characterized in that, The second guide unit includes a second support column and a second guide portion; the second support column is connected to the second guide portion; the second support column is connected to the frame assembly; the second guide portion extends from the connection point between the second guide portion and the second support column in a direction away from the second support column, extending outwards onto the second surface. The length of the second guide portion extending beyond the second surface is less than the length of the first guide portion extending beyond the second surface.

7. A battery box base according to claim 5, characterized in that, The first guide unit further includes a mounting hole; the mounting hole penetrates the first support column; The locking unit includes a driving part, a connecting part, and a locking tongue; one end of the connecting part is connected to the driving part, and the other end is connected to the locking tongue; the driving part is connected to the first guide part; the connecting part passes through the mounting hole; The locking unit includes a locked state and an unlocked state; the locked state includes a situation where the projection of the locking tongue on the second surface and the projection of the first main beam on the second surface overlap; the unlocked state includes a situation where the projection of the locking tongue on the second surface and the projection of the first main beam on the second surface are spaced apart.

8. A battery box base according to claim 1, characterized in that, The electrical connection assembly includes a floating unit; the connector is connected to the frame unit through the floating unit; when the connector is subjected to external force, the floating unit deforms.

9. A battery box base according to claim 1, characterized in that, The electrical connection assembly includes a charging port; the charging port is connected to the frame unit; and the charging port is electrically connected to the connector.

10. A battery box base according to claim 1, characterized in that, The frame assembly also includes a base plate; the base plate and the first surface of the frame unit are connected.

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