CN118494152A - Battery pack mounting part for horizontally mounting battery pack and electric automobile with battery pack mounting part - Google Patents

Abstract

The present invention discloses a battery pack mounting part for horizontally mounting a battery pack and an electric vehicle thereof, wherein the battery pack mounting part is arranged at the bottom of the electric vehicle and is used to mount the battery pack. A hanging seat is provided on the battery pack mounting part for cooperating with a hanging part of the battery pack to hang the battery pack on the electric vehicle in a horizontal direction. The mounting part is connected to the bottom of the electric vehicle so that the side of the mounting part can match the bottom plate of the vehicle, and the mounting part can change its shape according to the shape of the bottom plate. The vertical hanging of the battery pack and the bottom of the electric vehicle is increased. On the one hand, the connection points between the battery pack and the electric vehicle are increased, and the installation stability is improved. On the other hand, the movement of the battery pack relative to the electric vehicle in the vertical direction is restricted, and the shock resistance of the battery pack during the driving of the electric vehicle is improved.

Description

Battery pack mounting portion for horizontally mounting battery pack and electric vehicle thereof

This application is a division of a Chinese invention patent with an application date of September 17, 2021, application number 202111095454.8, and name “Battery pack mounting portion for horizontally installing the battery pack and its electric vehicle”.

Technical Field

The present invention relates to a battery pack mounting portion for horizontally mounting a battery pack and an electric vehicle thereof.

Background Art

The battery packs of existing electric vehicles are generally divided into fixed and replaceable types. Among them, fixed battery packs are generally fixed on the vehicle, and the vehicle is directly used as the charging object during charging. The replaceable battery pack is generally fixed on the vehicle bracket through a movable installation method. The battery pack can be removed for separate replacement or charging operations. After the replaced battery pack is charged, it can be installed on the vehicle.

In the prior art, battery pack replacement methods include manual and automatic methods. Regardless of which method is used, when the battery is installed on the vehicle bracket, the bracket needs to lock the battery on the bracket. Currently, multiple lock shafts are set on both sides of the battery pack and hung in the lock grooves of the lock base on the bracket to connect the battery pack to the bracket. For wider battery packs, there is no connection support between the middle area of the battery pack away from the locking positions on both sides or all around and the electric vehicle, resulting in the middle area of the battery pack being prone to sinking, causing the battery pack to deform and have poor seismic performance.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the defect in the prior art that after a larger battery pack is installed in an electric vehicle, the middle area of the battery pack is prone to sinking and deforming, and to provide a battery pack mounting portion for horizontally installing the battery pack and an electric vehicle thereof.

The present invention solves the above technical problems through the following technical solutions:

A battery pack mounting portion is arranged at the bottom of an electric vehicle and is used for mounting a battery pack. The battery pack mounting portion is provided with a hanging seat for cooperating with a hanging piece of the battery pack to hang the battery pack on the electric vehicle in a horizontal direction. The battery pack comprises an upper cover and a lower box body, a battery module is arranged between the upper cover and the lower box body, and the upper cover is provided with a hanging piece for moving in a vertical direction to a position corresponding to the hanging seat at the bottom of the electric vehicle and moving in a horizontal direction into the hanging seat so that the battery pack is hung in the hanging seat on the electric vehicle.

In this solution, the above-mentioned structural form is adopted, and the battery pack is connected to the electric vehicle through the cooperation of the mounting seat and the mounting member, thereby increasing the connection points between the battery pack and the electric vehicle and avoiding deformation of the battery pack due to sinking of the middle area due to its excessive size.

Preferably, the mounting seat comprises a mounting portion and a mounting portion, the mounting portion is provided with a mounting hole, and the mounting hole is used for a fastener to be mounted on a vertical beam at the bottom of the electric vehicle along a horizontal direction.

In this solution, the above-mentioned structural form is adopted, so that the battery pack can be connected to the vertical beam at the bottom of the electric vehicle through the mounting seat, thus saving installation space.

Preferably, the mounting portion is vertically arranged on the surface of the hanging portion.

In this solution, the above-mentioned structural form is adopted, so that the connection area between the mounting part and the hanging part is large, making the connection more stable.

Preferably, a reinforcing plate is provided between the mounting portion and the hanging portion.

In this solution, the above-mentioned structural form is adopted to improve the strength of the connection between the mounting part and the hanging part, and improve the stability of the connection.

Preferably, the mounting seat has a mounting groove, and the mounting groove entrance is opened at the bottom of the mounting seat. The mounting member on the battery pack passes through the mounting groove entrance and moves to the mounting point in the mounting groove, so that the battery pack is fixedly connected to the electric vehicle.

In this solution, the above-mentioned structural form is adopted, and the connection can be achieved by utilizing the hanging groove formed on the hanging seat, which has the characteristics of small space occupation, simple structure and convenient processing.

Preferably, the entrance of the hanging groove includes a first opening groove and a first locking groove that are interconnected, the hanging member extends into the hanging groove through the first opening groove, and the hanging member moves from the first opening groove to a first position corresponding to the first locking groove, and moves from the first position along the first locking groove to the hanging point.

In this solution, the above-mentioned structural form is adopted to facilitate the battery pack to enter the mounting seat. The mounting of the battery pack on the bottom of the electric vehicle in the vertical direction increases the connection points between the battery pack and the electric vehicle, improving the installation stability, and on the other hand, restricting the movement of the battery pack relative to the electric vehicle in the vertical direction, improving the shock resistance of the battery pack during the driving of the electric vehicle.

Preferably, the extension directions of the first opening groove and the first locking groove are not parallel.

In this solution, the above-mentioned structural form is adopted to realize that the hanging member enters the hanging groove from the first opening groove.

Preferably, the first opening groove is perpendicular to the extending direction of the first locking groove.

In this solution, the above-mentioned structural form is adopted to facilitate the hanging member to enter the hanging groove from the first opening groove.

Preferably, the hanging seat has a supporting portion, and the hanging member is hung on the supporting portion after reaching the hanging point.

In this solution, the above-mentioned structural form is adopted so that the battery pack is hung on the vertical beam at the bottom of the electric vehicle.

Preferably, a clearance opening is provided at the bottom of the hanging seat, the clearance opening is communicated with the entrance of the hanging groove, and is arranged on both sides of the first opening groove opposite to the first locking groove.

In this solution, the above-mentioned structural form is adopted, so that the hanging component can enter the hanging groove more conveniently without hindrance.

Preferably, the cross section between the first opening groove and the first locking groove is in a "T" or "X" shape.

In this solution, the above-mentioned structural form is adopted to ensure that the forces on both ends of the hanging member are uniform and stable.

Preferably, the top of the hanging seat has a top opening, and the top opening is connected to the entrance of the hanging groove.

In this solution, the above-mentioned structural form is adopted, and the electric vehicle is connected to the top through the top opening hanging member, and the hanging member can move in the top opening, and the hanging member can be limited.

Preferably, the top opening is larger than the entrance of the hanging groove and passes through to the surface of the hanging portion.

In this solution, the above-mentioned structural form is adopted, so that the accommodating groove has an avoidance function, ensuring that the hanging part is hung in the hanging groove without causing interference.

Preferably, the hanging portion includes a first hanging portion and an extension portion located on at least one side of the first hanging portion, wherein the extension portion protrudes downward from the bottom surface of the first hanging portion; and/or the extension portion protrudes upward from the top surface of the first hanging portion.

In this solution, the above structural form is adopted to improve the strength and stability of the hanging part

Preferably, the top surface of the first hanging portion is flush with the top surface of the extending portion; and/or the bottom surface of the first hanging portion is lower than the bottom surface of the extending portion.

In this solution, the above-mentioned structural form is adopted to form an extension portion that protrudes upward or an extension portion that protrudes downward.

Preferably, the hanging groove is arranged in the first hanging portion and/or the extending portion.

In this solution, the above-mentioned structural form is adopted, and the hanging member is hung on the first hanging part through the hanging groove.

Preferably, the battery pack mounting portion also includes a quick-change bracket, and the quick-change bracket is provided with a locking mechanism, and the locking mechanism has a second opening groove extending in the vertical direction and a second locking groove extending in the horizontal direction, and the second locking groove is used for inserting and locking a locking shaft on the battery pack, and the second opening groove is connected to the second locking groove, and the locking shaft enters the second locking groove when it reaches the intersection position of the second opening groove and the second locking groove from the second opening groove in the vertical direction, and the hanging part moves to the first position in the vertical direction, and/or the locking shaft moves in the second locking groove to the locking position, and the hanging part reaches the hanging point in the hanging seat along the movement in the hanging groove.

In this solution, the above-mentioned structural form is adopted, and the locking mechanism cooperates with the locking shaft on the side wall of the battery pack to lock the battery pack on the electric vehicle.

Preferably, the quick-change bracket is annular or double-sided strip-shaped.

Preferably, the mounting seat is arranged at a middle position on the side of the quick-change bracket having a locking mechanism at the bottom.

In this solution, the above-mentioned structural form is adopted to make the connection between the hanging seat and the quick-change bracket side of the locking mechanism more stable.

Preferably, the battery pack mounting portion further includes a bolt-type locking mechanism and a ball-type locking mechanism for locking the battery pack on the electric vehicle.

Preferably, the battery pack mounting portion further includes a vehicle-end electrical connector; and/or the battery pack further includes a liquid cooling connection device.

Preferably, the vehicle-end electrical connector and the liquid cooling pipeline connection device are arranged at the bottom of the electric vehicle.

Preferably, there are a plurality of the mounting seats, and the plurality of mounting seats are arranged on the bottom plate of the electric vehicle.

In this solution, the above structural form is adopted, and the connection of the connection package is more stable.

An electric vehicle comprises the battery pack mounting portion as described above.

The positive and progressive effects of the present invention are:

The mounting part is connected to the bottom of the electric vehicle so that the side of the mounting part can match the bottom plate of the vehicle, and the mounting part can change its shape according to the shape of the bottom plate. The vertical connection between the battery pack and the bottom of the electric vehicle is increased. On the one hand, the connection points between the battery pack and the electric vehicle are increased to improve the installation stability. On the other hand, the movement of the battery pack relative to the electric vehicle in the vertical direction is restricted, which improves the shock resistance of the battery pack during the driving of the electric vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a battery pack installed on a battery pack installation portion in Embodiment 1 of the present invention;

FIG2 is a schematic diagram of the structure of a battery pack according to Embodiment 1 of the present invention;

FIG3 is a schematic diagram of the combined structure of the hanging member and the hanging seat according to Embodiment 1 of the present invention;

FIG4 is a top view of FIG3 ;

Fig. 5 is a cross-sectional view along the B-B plane of Fig. 4;

FIG6 is a side view of the battery pack of Embodiment 1 of the present invention;

Fig. 7 is a cross-sectional view along the B-B plane of Fig. 6;

FIG8 is a schematic structural diagram of a battery pack installed on a battery pack installation portion according to Embodiment 2 of the present invention;

FIG9 is a schematic structural diagram of a battery pack installation portion according to Embodiment 2 of the present invention;

FIG10 is a schematic diagram of the combined structure of the hanging member and the hanging seat in Example 2 of the present invention;

FIG11 is a schematic structural diagram of a mounting base in Embodiment 2 of the present invention;

FIG12 is a schematic structural diagram of a mounting base in Embodiment 3 of the present invention;

FIG13 is a schematic diagram of the combined structure of the hanging member and the hanging seat in Example 3 of the present invention;

FIG14 is a schematic structural diagram of a hanging member in Embodiment 3 of the present invention;

FIG15 is a schematic structural diagram of a mounting base in Embodiment 4 of the present invention;

FIG. 16 is a schematic structural diagram of the mounting base in Embodiment 5 of the present invention.

DETAILED DESCRIPTION

The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

Example 1

As shown in Figures 1-7, Figure 1 is a schematic diagram of a battery pack 8 installed on a battery pack installation portion 9 at the bottom of an electric vehicle. This embodiment provides a battery pack 8, which has an upper cover 81 and a lower box 82, with a battery module arranged between the upper cover 81 and the lower box 82. The upper cover 81 is equipped with a hanging member 83, which is used to move in the vertical direction to a position corresponding to a hanging seat 91 at the bottom of the electric vehicle, and to move in the horizontal direction into the hanging seat 91, so that the battery pack 8 is hung in the hanging seat 91 on the electric vehicle. The hanging member is arranged in the middle area of the upper cover 81, and the hanging member 83 is arranged in the middle position of the length direction of the battery pack 8.

The hanging member 83 is hung in the hanging seat 91 in the vertical direction, and the hanging of the battery pack 8 and the bottom of the electric vehicle in the vertical direction is increased. On the one hand, the connection points between the battery pack 8 and the electric vehicle are increased, and the installation stability is improved. On the other hand, the movement of the battery pack 8 relative to the electric vehicle in the vertical direction is restricted, and the shock resistance of the battery pack 8 during the driving of the electric vehicle is improved, especially the shock resistance of the middle area away from the locking positions on both sides or all around.

In this embodiment, the hanging member 83 includes a connecting portion 831 and a hanging portion 832. One end of the connecting portion 831 is mounted on the upper cover 81, and the other end of the connecting portion 831 is connected to the hanging portion 832. The hanging portion 832 is located above the upper cover 81, and the hanging member 83 is hung in the hanging seat 91 through the hanging portion 832. The outer wall of the connecting portion 831 is provided with a threaded portion 8312, and is connected and fixed to the upper cover 81 through the threaded portion 8312. The outer wall of the connecting portion 831 has a limiting portion 8311 extending outward from the outer wall, which is used for the hanging member 83 to abut against the upper cover 81. The limiting portion 8311 is a nut, which is sleeved on the threaded portion 8312 of the connecting portion 831.

In this embodiment, the hanging portion 832 extends and protrudes from the connecting portion 831 in a direction away from the connecting portion 831; the hanging portion 832 protrudes from the connecting portion 831 in a horizontal direction. The hanging portion 832 is vertically arranged with the connecting portion 831, and the hanging portion 832 and the connecting portion 831 are integrally formed, or the hanging portion 832 and the connecting portion 831 are detachably connected. The connecting portion 831 is a connecting rod extending in a vertical direction, and the hanging portion 832 is a hanging rod extending in a horizontal direction, and the hanging rod is cylindrical. The hanging portion 832 and the hanging seat 91 cooperate with each other by any one of screw connection, clamping connection, buckle connection, plug connection, hook connection, and tenon connection to realize the hanging of the battery pack 8.

In this embodiment, the battery pack 8 further includes a second mounting seat 84, and the hanging member 83 is mounted on the upper cover 81 through the second mounting seat 84. The second mounting seat 84 is arranged between the upper cover 81 and the lower box body 82. The second mounting seat 84 is detachably connected to the upper cover 81, and the second mounting seat 84 is fixedly connected to the lower box body 82. A sealing member is arranged between the second mounting seat 84 and the upper cover 81.

In this embodiment, the second mounting seat 84 includes a third accommodating cavity 841 for providing an operating space, and/or a fourth accommodating cavity 842 for accommodating the connecting portion 831. A collar 843 is provided in the third accommodating cavity 841 for preventing the hanging member 83 from falling off from the second mounting seat.

In this embodiment, the battery pack 8 includes a side wall portion 85, and at least two side surfaces of the side wall portion 85 are vertically provided with a locking shaft 86 for locking the battery pack 8 in a locking mechanism on the electric vehicle. The lower box body 82 includes a bottom wall portion and a side wall portion 85, and the bottom wall portion and the upper cover 81 are arranged opposite to each other. The side wall portion 85 is arranged between the bottom wall portion and the upper cover 81, and at least two side surfaces of the side wall portion 85 along the length direction of the battery pack 8 are vertically provided with a locking shaft 86 for locking the battery pack 8 in a locking mechanism on the electric vehicle. The locking mechanism in this embodiment is described by taking the locking device in Chinese Patent Publication No. CN106427514A as an example, but the locking mechanism of the present invention is not limited to the specific structure in the above-mentioned prior art, and can also be applied to the locking mechanism of other bottom battery replacement methods.

In other embodiments, the battery pack 8 also includes a first locking member and/or a second locking member, the first locking member is used to lock the battery pack 8 to a bolt-type locking mechanism on the electric vehicle, and the second locking member is used to lock the battery pack 8 to a ball-type locking mechanism on the electric vehicle.

In other embodiments, a plurality of hanging members 83 are provided on the battery pack 8 , and at least one row of the plurality of hanging members 83 is in a straight line; the plurality of hanging members 83 are connected into a row of hanging members 83 by a connecting member.

In this embodiment, the battery pack 8 further includes a battery terminal electrical connector 87 disposed on the upper cover 81 .

In other embodiments, the battery pack 8 further includes a battery terminal electrical connector 87 disposed on the upper cover 81 .

In other embodiments, the battery pack 8 further includes a liquid cooling connection device 88 disposed on the side wall or the upper cover 81 of the battery pack 8 .

The battery pack 8 is hooked to the hook seat 91 by the hooking member 83 in this embodiment. The structure is simple and matches the locking movement process of the lock shafts 86 on the left and right sides of the battery pack 8 in the locking mechanism. When the lock shafts 86 are locked in the locking mechanism, the hooking member 83 reaches the hooking point in the hook seat 91. By setting a plurality of hooking members 83 in the middle position of the upper cover 81, the hooking of the battery pack 8 and the bottom of the electric vehicle is increased, the movement of the battery pack 8 relative to the electric vehicle in the vertical direction is restricted, and the shock resistance of the electric vehicle is improved. At the same time, the hooking from the side of the hook seat 91 is adopted, and the clearance between the hooking member 83 and the hook seat 91 is matched, which has good fault tolerance and flexibility, allowing the battery pack 8 to have a certain amount of movement in the installation part, avoiding over-positioning between the battery pack 8 and the electric vehicle, resulting in a large interaction force.

Example 2

As shown in Figures 8-11, Figure 8 is a schematic diagram of a battery pack 8 installed on a battery pack mounting portion 9 at the bottom of an electric vehicle. This embodiment provides a battery pack mounting portion 9 for mounting the battery pack 8 in Example 1, which is disposed at the bottom of the electric vehicle. A hanging seat 91 is provided on the battery pack mounting portion 9, which cooperates with a hanging member 83 to hang the battery pack 8 on the electric vehicle in a horizontal direction.

In this embodiment, the side portion 911 of the mounting seat 91 has a side opening 9111 for the mounting member 83 to enter, and a mounting groove 912 extending inwardly from the side opening 9111 in the horizontal direction. The mounting member 83 moves in the vertical direction to a first position corresponding to the side opening 9111, and enters the mounting point in the mounting groove 912 in the horizontal direction from the first position. The side opening 9111 is provided to facilitate the mounting member 83 to enter the mounting seat 91 during the horizontal movement of the battery pack 8.

In this embodiment, the side portion 911 includes an upper side portion 9112 located above the opening 9131 and a lower side portion 9113 located below the opening 9131. The upper side portion 9112 is connected to the top wall 9123 of the hanging groove by an arc-shaped guide surface, and the lower side portion 9113 is connected to the bottom wall 9121 of the hanging groove by an arc-shaped guide surface. The hanging portion 832 is guided into the hanging groove 912 by the guide surface. The lower side portion 9113 is inclined relative to the bottom of the hanging seat 91, and is used to guide the hanging member 83 to reach the first position corresponding to the side opening 9111.

In this embodiment, the hanging member 83 has a connecting portion 831 and a hanging portion 832. The hanging portion 832 is arranged at the top of the connecting portion 831. The hanging member 83 is hung on the hanging point on the bottom wall 9121 of the hanging groove through the hanging portion 832. The hanging groove 912 and the hanging portion 832 are clearance-matched. When the hanging portion 832 is hung on the hanging point on the bottom wall 9121 of the hanging groove, the clearance between the hanging portion 832 and the top wall 9123 of the hanging groove is greater than 0 and less than 0.1 mm. The hanging groove 912 also includes a side wall 9122 located between the bottom wall 9121 and the top wall 9123. When the hanging portion 832 is hung on the hanging point on the bottom wall 9121 of the hanging groove, the clearance between the hanging portion 832 and the side wall 9122 of the hanging groove is greater than 2 mm. The hanging groove 912 also includes a side wall 9122 located between the bottom wall 9121 and the top wall 9123. The side wall 9122 is an arc-shaped side wall 9122. The top of the arc-shaped side wall 9122 is tangent to the top wall 9123, and the bottom of the arc-shaped side wall 9122 is tangent to the bottom wall 9121. The side wall 9122 of the hanging groove 912 is configured to be in a shape that matches the cylindrical hanging rod. The hanging seat 91 has a receiving groove 913 connected to the hanging groove 912. When the hanging part 832 is located at the hanging point in the hanging groove 912, the connecting part 831 is partially accommodated in the receiving groove 913. When the hanging part 832 is hung at the hanging point in the hanging groove 912, the gap between the connecting part 831 and the receiving groove 913 is greater than 2 mm. The clearance between the second hanging member and the hanging seat 91 is matched, so that the hanging member 83 can enter the hanging seat 91. A guide surface is provided at the opening of the receiving groove for guiding the connecting portion 831 to enter the receiving groove 913 .

In this embodiment, a mounting hole 914 is provided on the top of the mounting seat 91 for mounting the mounting seat 91 on the bottom of the electric vehicle.

In the present embodiment, the battery pack mounting portion 9 for horizontally mounting the battery pack further comprises a quick-change bracket 92, on which a locking mechanism 93 is provided, the locking mechanism 93 having a second opening groove extending in the vertical direction and a second locking groove extending in the horizontal direction, the second locking groove being used for inserting and locking the lock shaft on the battery pack 8, the second opening groove being connected to the second locking groove, the lock shaft entering the second locking groove from the second opening groove in the vertical direction, the lock shaft moving in the second locking groove to the locking position, and the hanging portion 832 reaching the hanging point in the hanging groove 912. The quick-change bracket 92 is annular or double-sided strip-shaped. The hanging seat 91 is provided at the middle position of the side of the quick-change bracket 92 on which the locking mechanism 93 is provided at the bottom. The locking mechanism in the present embodiment is described by taking the locking device in the Chinese patent publication number CN106427514A as an example, but the locking mechanism of the present invention is not limited to the specific structure in the above-mentioned prior art, and can also be applied to the locking mechanism of other bottom battery replacement methods.

In other embodiments, the battery pack mounting portion further includes a bolt-type locking mechanism 93 and a ball-type locking mechanism 93 for locking the battery pack 8 on the electric vehicle, and the bolt-type locking mechanism 93 and the ball-type locking mechanism 93 are respectively used to lock the first locking member and the second locking member.

In this embodiment, the battery pack installation portion 9 also includes a vehicle-end electrical connector 94 disposed at the bottom of the electric vehicle.

In other embodiments, the battery pack mounting portion 9 further includes a battery terminal electrical connector disposed at the bottom of the electric vehicle.

In other embodiments, the battery pack mounting portion 9 further includes a liquid cooling pipeline connection device disposed at the bottom of the electric vehicle.

Example 3

As shown in Figures 12-14, Figure 12 is a schematic diagram of a battery pack mounting portion for installing the battery pack at the bottom of an electric vehicle for horizontally mounting the battery pack. This embodiment provides a battery pack mounting portion for mounting the battery pack, which is disposed at the bottom of the electric vehicle. A hanging seat 1 is provided on the battery pack mounting portion to cooperate with a hanging member 2 on the battery pack to hang the battery pack on the electric vehicle in a horizontal direction.

In this embodiment, the mounting seat 1 includes a mounting portion 11 and a mounting portion 12. The mounting portion 11 is provided with a mounting hole 13, and the mounting hole 13 is used for fasteners to be mounted on the vertical beam at the bottom of the electric vehicle in the horizontal direction. The mounting portion 11 is connected to the vertical beam at the bottom of the electric vehicle, so that the side of the mounting portion 11 can match the bottom plate of the vehicle, and the mounting portion 11 can change its shape according to the shape of the bottom plate. The mounting portion 12 is connected to the bottom end of the mounting portion 11 and is used to cooperate with the mounting part 2 on the battery pack, so that the battery pack can be connected to the vertical beam at the bottom of the electric vehicle through the mounting seat 1, saving installation space.

In this embodiment, the mounting portion 11 is vertically disposed on the surface of the hanging portion 12 , and the connection area between the mounting portion 11 and the hanging portion 12 is large, so that the connection is more stable.

In other embodiments, the extending direction of the mounting portion 11 and the extending direction of the hanging portion 12 may form a certain angle.

In this embodiment, a reinforcing plate 14 is further provided between the mounting portion 11 and the hanging portion 12 to improve the strength and stability of the connection between the mounting portion 11 and the hanging portion 12. There are two reinforcing plates 14, which are symmetrically arranged at both ends of the mounting portion 11.

In this embodiment, the hanging part 12 includes a first hanging part 121 and an extension part 122 located at the lower side of the first hanging part 121, and the extension part 122 protrudes downward from the bottom surface of the first hanging part 121. The above form also forms a downwardly protruding extension part 122, and the bottom surface of the first hanging part 121 is higher than the bottom surface of the extension part 122. The above structural form improves the strength and stability of the hanging part 12.

In other embodiments, the top surface of the first hanging portion 121 may also be higher than the top surface of the extending portion 122 .

As shown in Figures 13-14, the hanging component 2 includes a connecting portion 21 and a second hanging portion 22. The second hanging portion 22 is arranged at one end of the connecting portion 21, and the other end of the connecting portion 21 is used to connect the battery pack. When the hanging component 2 moves to the first position in the vertical direction, the second hanging portion 22 is located above the first opening groove 151, and the connecting portion 21 is aligned with the entrance of the hanging groove 15.

When the hanging member 2 moves to the hanging point, the second hanging portion 22 is hung on the supporting portions on both sides of the hanging groove 15 .

In this embodiment, the hanging groove 15 is disposed in the first hanging portion 121 to achieve the connection between the hanging member 2 and the first hanging portion 121 .

In other embodiments, the hanging slot 15 may be disposed in the extending portion 122 .

In other embodiments, the hanging groove 15 may be disposed in the first hanging portion 121 and the extending portion 122 .

There are multiple mounting bases 1, and multiple mounting bases 1 are arranged on the bottom plate of the electric vehicle, which makes the connection of the connection package more stable.

Example 4

As shown in FIG. 15 , in this embodiment, the mounting seat 1 has a mounting groove 15 , and an entrance to the mounting groove 15 is provided at the bottom of the mounting seat 1 . The mounting member 2 on the battery pack passes through the entrance to the mounting groove 15 and moves to the mounting point in the mounting groove 15 , so that the battery pack is fixedly connected to the electric vehicle. With the above-mentioned structural form, the mounting groove 15 provided on the mounting seat 1 can be used to realize the connection, which has the characteristics of small space occupation, simple structure, and convenient processing.

In other embodiments, the mounting seat 1 and the mounting member 2 cooperate with each other through any one of screw connection, snap connection, buckle connection, plug connection, hook connection, and mortise and tenon connection to achieve battery pack mounting.

In this embodiment, the entrance of the hanging groove 15 includes a first opening groove 151 and a first locking groove 152 that are interconnected. The hanging member 2 extends into the hanging groove 15 through the first opening groove 151, and the hanging member 2 moves from the first opening groove 151 to a first position corresponding to the first locking groove 152, and moves from the first position along the first locking groove 152 to the hanging point. The setting of the first opening groove 151 facilitates the battery pack to enter the hanging seat 1. The increase in the vertical hanging of the battery pack and the bottom of the electric vehicle, on the one hand, increases the connection points between the battery pack and the electric vehicle, improves the installation stability, and on the other hand, limits the movement of the battery pack in the vertical direction relative to the electric vehicle, and improves the shock resistance of the battery pack during the driving of the electric vehicle. In particular, the shock resistance of the middle area away from the locking positions on both sides or all around.

In this embodiment, the extending directions of the first opening groove 151 and the first locking groove 152 are not parallel, so that the hanging member 2 can enter the hanging groove 15 from the first opening groove 151 .

In this embodiment, the first opening slot 151 is perpendicular to the extending direction of the hanging slot 15 , which facilitates the hanging member 2 to enter the hanging slot 15 from the first opening slot 151 .

In this embodiment, the mounting seat 1 has a support portion 16, and the mounting member 2 is mounted on the support portion 16 after reaching the mounting point, thereby enabling the battery pack to be mounted on the vertical beam at the bottom of the electric vehicle.

In this embodiment, the bottom of the mounting seat 1 is provided with an escape opening 18, which is communicated with the entrance of the mounting groove 15 and is arranged on both sides of the first opening groove 151 opposite to the first locking groove 152. The setting of the escape opening 18 allows the mounting member 2 to enter the mounting groove 15 more conveniently without hindrance.

In this embodiment, the cross section between the first opening groove 151 and the first locking groove 152 is in a “T” or “X” shape, so that the forces on both ends of the hanging member 2 are uniform and stable.

In this embodiment, the top of the mounting seat 1 has a top opening 17, and the top opening 17 is connected to the entrance of the mounting groove 15. The connecting member 2 is connected to the electric vehicle through the top opening 17, and the height direction of the connecting member 2 is limited. The connecting member 2 can move in the top opening 17, and the connecting member 2 can also be limited.

In this embodiment, the top opening 17 is larger than the entrance of the hanging groove 15 and penetrates to the surface of the hanging portion 12, so that the accommodating groove 15 has an avoidance effect, ensuring that the hanging member 2 is hung in the hanging groove 15 without causing interference.

The extension part 122 protrudes upward from the top surface of the first hanging part 121. Thus, an upwardly protruding extension part 122 is formed, and the top surface of the extension part 122 is higher than the top surface of the first hanging part 121. The above structural form improves the strength and stability of the hanging part 12.

In other embodiments, the bottom surface of the first hanging portion 121 is lower than the bottom surface of the extending portion 122 .

Example 5

As shown in FIG. 16 , in this embodiment, the hanging portion 12 is connected to the top of the mounting portion 11 and is used to cooperate with the hanging member 2 on the battery pack, so that the battery pack can be connected to the vertical beam at the bottom of the electric vehicle through the hanging seat 1, saving installation space.

Of course, in other embodiments, the hanging portion 12 may also be connected to the middle area of one side of the mounting portion 11, so that the other side of the mounting portion 11 is used to connect to the bottom of the electric vehicle.

The top surface of the extension portion 122 is higher than the top surface of the first hanging portion 121. That is, the extension portion 122 protrudes upward from the top surface of the first hanging portion 121, forming an upwardly protruding extension portion 122.

In other embodiments, the top surface of the first hanging portion 121 is flush with the top surface of the extending portion 122. That is, the first hanging portion 121 protrudes downward from the top surface of the extending portion 122, forming the extending portion 122 protruding downward.

In this embodiment, the top surface of the extension portion 122 may have an extension portion mounting hole, so that the extension portion 122 can be connected to the electric vehicle, further improving the stability of the connection.

Example 6

In this embodiment, the battery pack mounting portion further includes a locking mechanism, which is used to cooperate with the locking shaft on the side wall of the battery pack to lock the battery pack on the electric vehicle. The locking mechanism has a second opening groove extending in the vertical direction and a second locking groove extending in the horizontal direction. The second opening groove is connected to the second locking groove. When the locking shaft reaches the intersection of the second opening groove and the second locking groove from the second opening groove in the vertical direction, the hanging member moves to the first position in the vertical direction. When the locking shaft moves to the locking position in the second locking groove, the hanging member moves along the hanging groove to the hanging point in the hanging seat. The locking mechanism is installed at the bottom of the electric vehicle through the quick-change bracket. The locking mechanism is arranged on the side wall of the quick-change bracket facing the battery pack. The quick-change bracket is annular or double-sided strip. The hanging seat 1 is arranged at the middle position of the quick-change bracket side with the locking mechanism at the bottom, so that the connection between the hanging seat and the quick-change bracket side of the locking mechanism is more stable. The locking mechanism in this embodiment is explained by taking the locking device in Chinese Patent Publication No. CN106427514A as an example, but the locking mechanism of the present invention is not limited to the specific structure in the above-mentioned prior art, and can also be applied to the locking mechanism of other bottom battery replacement methods.

In other embodiments, the mounting seat and the mounting member cooperate with each other through any one of screw connection, snap connection, buckle connection, plug connection, hook connection, and mortise and tenon connection to achieve battery pack mounting.

In other embodiments, the battery pack mounting portion further includes a bolt-type locking mechanism or a ball-type locking mechanism for locking the battery pack on the electric vehicle, which is used to lock the first locking member and the second locking member respectively.

In this embodiment, the battery pack installation portion also includes a vehicle-end electrical connector disposed at the bottom of the electric vehicle.

In other embodiments, the battery pack mounting portion includes a battery terminal electrical connector disposed at the bottom of the electric vehicle.

In other embodiments, the battery pack mounting portion further includes a liquid cooling connection device disposed at the bottom of the electric vehicle.

Example 7

An electric vehicle comprises the above-mentioned battery pack mounting portion and a battery pack. A hanging piece is provided on the top of the battery pack for hanging with a hanging seat. When hanging, the battery pack is moved in the vertical direction so that the hanging piece moves to the hanging seat in the vertical direction, and then the hanging piece is moved in the horizontal direction to the hanging point in the hanging seat so that the battery pack is hung on the hanging seat. The hanging piece is provided in the middle area of the top of the battery pack, corresponding to the position of the horizontal and longitudinal beams on the lower box of the battery pack. The hanging piece can be connected and fixed to the lower box through a mounting seat fixed on the horizontal and longitudinal beams.

In other embodiments, the hanging member may be fixedly connected to the upper cover of the battery pack via a connecting member.

Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (24)

1. The battery pack mounting part is arranged at the bottom of the electric automobile and used for mounting the battery pack, and is characterized in that a hanging seat is arranged on the battery pack mounting part and used for being matched with a hanging piece of the battery pack to hang the battery pack on the electric automobile along the horizontal direction, and a hanging groove inlet is formed in the bottom of the hanging seat;

The battery pack is provided with an upper cover and a lower box body, a battery module is arranged between the upper cover and the lower box body, and a hanging piece is arranged on the upper cover and used for moving to a position corresponding to a hanging seat at the bottom of the electric automobile along the vertical direction and moving into the hanging seat along the horizontal direction so that the battery pack is hung in the hanging seat on the electric automobile;

The top of the hanging seat is provided with a top opening, and the top opening is communicated with the inlet of the hanging groove.

2. The battery pack mounting portion according to claim 1, wherein the hanging seat comprises a mounting portion and a hanging portion, wherein the mounting portion is provided with a mounting hole for mounting the fastener on a vertical beam at the bottom of the electric vehicle in a horizontal direction.

3. The battery pack mounting portion according to claim 2, wherein the mounting portion is provided perpendicularly to a surface of the hitching section.

4. The battery pack mounting portion according to claim 2, wherein a reinforcing plate is further provided between the mounting portion and the hooking portion.

5. The battery pack mounting portion of claim 2 wherein said docking station has a hooking slot through which said hooking member on said battery pack passes and moves to a hooking point in said hooking slot to fixedly attach said battery pack to said electric vehicle.

6. The battery pack mounting portion of claim 5 wherein the hitch slot entrance includes a first open slot and a first locking slot in communication with each other, the hitch member extends into the hitch slot through the first open slot, and the hitch member moves from the first open slot to a first position corresponding to the first locking slot, from the first position along the first locking slot to the hitch point.

7. The battery pack mounting portion according to claim 6, wherein the first open groove is non-parallel to the extending direction of the first locking groove.

8. The battery pack mounting portion according to claim 6, wherein the first open groove is perpendicular to an extending direction of the first locking groove.

9. The battery pack mounting portion of claim 5 wherein said hanger has a support portion, said hanger being attached to said support portion after reaching said attachment point.

10. The battery pack mounting portion according to claim 6, wherein the bottom of the hanging seat is provided with an avoidance port, the avoidance port is communicated with the inlet of the hanging groove, and the avoidance port and the first locking groove are oppositely arranged on two sides of the first opening groove.

11. The battery pack mounting portion according to claim 6, wherein a cross section between the first open groove and the first locking groove is in a "T" or "cross" shape.

12. The battery pack mounting portion of claim 2 wherein said top opening is larger than said hooking recess entrance and extends through to a surface of said hooking portion.

13. The battery pack mounting portion of claim 5 wherein said hooking portion comprises a first hooking portion and an extension portion on at least one side of said first hooking portion, said extension portion protruding downward from a bottom surface of said first hooking portion; and/or, the extension portion protrudes upwards from the top surface of the first hooking portion.

14. The battery pack mounting portion of claim 13 wherein a top surface of said first hooking portion is flush with a top surface of said extension portion; and/or, the bottom surface of the first hooking portion is lower than the bottom surface of the extension portion.

15. The battery pack mounting portion of claim 13 wherein a top surface of said first hooking portion is higher than a top surface of said extension portion.

16. The battery pack mounting portion of claim 13 wherein said hooking recess is provided in said first hooking portion and/or extension.

17. The battery pack mounting portion according to claim 5, further comprising a quick-change bracket provided with a locking mechanism having a second opening groove extending in a vertical direction and a second locking groove extending in a horizontal direction, the second locking groove being for insertion locking of a lock shaft on the battery pack, the second opening groove being in communication with the second locking groove, the lock shaft coming into the second locking groove when reaching a position of engagement of the second opening groove with the second locking groove from the second opening groove in the vertical direction, the hooking member moving in the vertical direction to the first position, and/or the lock shaft moving in the second locking groove to the locking position, the hooking member reaching a hooking point moving in the hooking seat along the inside of the hooking groove.

18. The battery pack mounting portion of claim 17 wherein said quick-change bracket is annular or double sided bar-shaped.

19. The battery pack mounting portion according to claim 17, wherein the hooking seat is provided at a middle position of a quick-change bracket side provided with a locking mechanism at a bottom thereof.

20. The battery pack mounting portion of claim 17, further comprising a bolt locking mechanism and a bead-expanding locking mechanism for locking the battery pack to the electric vehicle.

21. The battery pack mounting portion of any one of claims 1-20, wherein said battery pack mounting portion further comprises a car-end electrical connector; and/or the battery pack further comprises a liquid cooling connection device.

22. The battery pack mounting portion of claim 21 wherein said vehicle end electrical connector, liquid cooled conduit connection means are provided on the bottom of an electric vehicle.

23. The battery pack mounting portion according to claim 1, wherein the number of the hanging seats is plural, and the plural hanging seats are provided on a floor panel of the electric vehicle.

24. An electric vehicle characterized by comprising the battery pack mounting portion according to any one of claims 1 to 23.