CN218677781U - Electric connecting device, charging frame and electric vehicle - Google Patents

Abstract

The utility model provides an electric connection device, charging frame and electric vehicle, thereby electric connection device is used for realizing the electricity for the quick change battery butt joint of electric automobile power supply to be connected, and electric connection device includes: a base; the bottom plate is arranged above the base and can move up and down relative to the base; the mounting plate is arranged above the bottom plate, and a plurality of electric connectors are arranged on the mounting plate and can be butted with electric connectors of the quick-change batteries to realize electric connection; and the first floating assembly is respectively connected with the bottom plate and the mounting plate, so that the mounting plate can float relative to the bottom plate in the plane of the mounting plate. By mounting the electrical connector on the mounting plate, the mounting plate can float relative to the base plate in a plane by providing a first floating assembly between the base plate and the mounting plate, which when floating drives the electrical connector together, facilitating the mating of the electrical connector with the electrical terminals of the quick-change battery.

Description

Electric connecting device, charging frame and electric vehicle

Technical Field

The specification relates to the technical field of electric vehicle battery replacement, in particular to an electric connecting device, a charging rack and an electric vehicle.

Background

With the increasing of oil prices year by year and the increasing of environmental pollution problems, as a substitute for fuel-oil vehicles, natural gas vehicles, hydrogen-fuel vehicles, solar vehicles, electric vehicles, and the like have been developed, and among them, electric vehicles have the greatest application prospects.

When the quick-change batteries of the electric vehicle are replaced, generally, a hoisting mode is adopted to take down the short-power quick-change batteries on the electric vehicle and convey the short-power quick-change batteries to the charging frame, then the full-power quick-change batteries on the charging frame are hoisted and conveyed to the electric vehicle, and in the replacement process of the quick-change batteries, an electric connector on the short-power quick-change batteries needs to be ensured to be connected with an electric connector on the charging frame, and the electric connector on the full-power quick-change batteries is connected with the electric connector on the electric vehicle.

Disclosure of Invention

The technical problem solved by the invention is as follows: the fault tolerance rate and the reliability of the butt joint between the quick-change battery and the electric connector are improved, and meanwhile, the electric connector is prevented from being damaged due to collision during the butt joint.

In view of this, the utility model provides an electric connecting device, charging frame and electric vehicle, through installing the electric connector on the mounting panel, through set up first unsteady subassembly between bottom plate and mounting panel for the mounting panel can float for the bottom plate in the plane, drives the electric connector and moves together when the mounting panel floats, and the electric connector of being convenient for and quick change battery carries out the butt joint.

The utility model provides a following technical scheme: an electrical connection device for mating with a quick-change battery for powering an electric vehicle to effect an electrical connection, comprising:

a base;

the bottom plate is arranged above the base and can move up and down relative to the base;

the mounting plate is arranged above the bottom plate, and a plurality of electric connectors are arranged on the mounting plate and can be butted with the electric connectors of the quick-change battery to realize electric connection;

a first float assembly, said first float assembly being connected to said base plate and said mounting plate, respectively, such that said mounting plate is floatable in its plane relative to said base plate.

Based on the technical characteristics, the bottom plate of the electric connecting device can float up and down relative to the base, so that the electric connecting device can firstly move the bottom plate and the electric connectors above the bottom plate downwards before the quick-change batteries are butted in place to avoid the damage caused by collision between the electric connectors and the quick-change batteries, and can firstly move the bottom plate and the electric connectors above the bottom plate downwards before the quick-change batteries are moved away to avoid the damage caused by the non-separation between the electric connectors and the quick-change batteries; and secondly, the mounting plate provided with the electric connectors can float in the plane relative to the bottom plate, so that a plurality of electric connectors can float together to be butted with the quick-change battery, fault tolerance in a certain range can be realized, and the butting reliability is improved.

Preferably, the first floating assembly comprises a plurality of first springs, and the first springs are respectively connected with the bottom plate and the mounting plate along the length direction and the width direction of the mounting plate.

Based on the technical characteristics, the first springs are arranged in the length direction and the width direction of the mounting plate respectively, so that the mounting plate can float in the length direction and the width direction relative to the bottom plate in a plane, the electric connector floats together with the mounting plate in all directions, and the deviation of the electric connector and the quick-change battery during butt joint is adapted.

Preferably, the electric connecting device further includes a plurality of first locating parts, the first locating parts are arranged in the first limiting through holes on the mounting plate in a penetrating manner, the first ends of the first locating parts are fixed on the bottom plate, the second ends of the first locating parts are provided with extending parts parallel to the mounting plate, so that the first locating parts are prevented from being separated from the first limiting through holes, and the inner diameter of the first limiting through holes is larger than the diameter of the first locating parts so as to limit the floating range of the mounting plate when the mounting plate floats relative to the bottom plate.

Based on the technical characteristics, when the mounting plate floats relative to the bottom plate in the plane where the mounting plate is located, the mounting plate moves relative to the first limiting part, the first limiting through hole moves along with the mounting plate, and the floating range of the mounting plate is limited by the first limiting part.

Preferably, the electric connection device further comprises a second floating assembly, the second floating assembly comprises a limiting column and a second spring sleeved outside the limiting column, one end of the limiting column is fixed on the base, the other end of the limiting column penetrates through the bottom plate, and the second spring is located between the base and the bottom plate so that the bottom plate can move up and down relative to the limiting column.

Based on the technical characteristics, the second floating assembly is arranged, so that the bottom plate can float up and down relative to the base, and particularly, the bottom plate moves down relative to the base before the quick-change battery is in place and butted or the quick-change battery is removed, so that the electric connector avoids interfering the movement of the quick-change battery or is separated from the quick-change battery so as to facilitate the movement of the quick-change battery; and after the quick-change battery is in place, the bottom plate is reset by the restoring force of the second spring so that the electric connector is in butt joint with the quick-change battery.

Preferably, a step surface is arranged at a position, close to the bottom plate, of the limiting column so as to limit the moving range of the bottom plate relative to the limiting column.

Based on the technical characteristics, the floating range of the bottom plate is limited by arranging the step surface on the limiting column.

Preferably, be provided with two at least first guide posts on the mounting panel, setting up of first guide post symmetry is followed mounting panel length direction's both sides or edge mounting panel width direction's both sides, first guide post can with the first fitting piece of quick change battery cooperatees so that electric connecting device with the quick change battery location.

Based on the technical characteristics, the first guide column is arranged on the mounting plate, so that the quick-change battery is guided and positioned when the electric connecting device is matched with the quick-change battery, and the quick-change battery is conveniently connected with the electric connecting device.

Preferably, each of the electrical connectors is floatably connected to the mounting plate by a third floating assembly, so that each of the electrical connectors is floatably movable in a respective plane relative to the mounting plate.

Based on the technical characteristics, the electric connectors are installed on the installation plate through the third floating assembly, so that each electric connector can float relative to the installation plate, fault tolerance in a certain range can be achieved when each electric connector is in butt joint with the quick-change battery, and the butt joint reliability is further improved.

Preferably, the third floating assembly includes a plurality of third springs, and the plurality of third springs are respectively connected to the electrical connector and the mounting plate along the respective length direction and width direction of each electrical connector.

Based on the technical characteristics, the third springs are arranged in the length direction and the width direction of the electric connector, so that the electric connector can float on the mounting plate along the length direction and the width direction, and each electric connector can float in each direction to adapt to the deviation of each electric connector and the quick-change battery during butting.

Preferably, the electrical connection device further comprises a plurality of first fixing pieces arranged in pairs, two first fixing pieces in pairs are oppositely arranged, one of the first fixing pieces is arranged on the bottom plate, the other one of the first fixing pieces is arranged on the mounting plate, and two ends of the first spring are respectively sleeved on the first fixing pieces in pairs;

and/or, the electric connection device comprises a plurality of second fixing pieces which are arranged in pairs, the two second fixing pieces in pairs are arranged oppositely, one of the second fixing pieces is arranged on the mounting plate, the other one of the second fixing pieces is arranged on the electric connector, and two ends of the third spring are respectively sleeved on the second fixing pieces in pairs.

Based on the technical characteristics, the arrangement of the first fixing piece and the second fixing piece enables the connection structure of the first spring and the third spring to be simple, and meanwhile, the first spring and the third spring are limited.

Preferably, the electric connecting device further includes a plurality of second locating parts, the second locating parts are arranged in the second limiting through holes on the mounting plate in a penetrating manner, a first end of the second locating part is fixed on the electric connector, a second end of the second locating part is provided with a protruding part to avoid the second locating part from being separated from the mounting plate, and the inner diameter of the second limiting through hole is larger than the diameter of the second locating part to limit the floating range of the electric connector relative to the mounting plate when floating.

Based on the technical characteristics, through setting up the second locating part, when the electric connector floated on the mounting panel, the electric connector drove the second locating part and moves together, and the second locating part moves in the spacing through-hole of second, and the spacing through-hole of second is spacing to the second locating part to the floating range is restricted on the mounting panel to the electric connector.

Preferably, each of the electrical connectors is provided with at least two second guiding posts, the second guiding posts are symmetrically arranged on the edge or the top corner of the electrical connector, and the second guiding posts can be matched with second matching pieces on the electrical connectors of the quick-change battery so as to facilitate the positioning of the electrical connector and the electrical connectors.

Based on the technical characteristics, the second guide columns are arranged on each electric connector, so that when the quick-change battery is matched and connected with the electric connecting device, the second guide columns can play a role in guiding, and the electric connector of the quick-change battery can be accurately positioned and butted with each electric connector conveniently.

Preferably, the mounting plate comprises a first mounting sub-plate and a second mounting sub-plate, the first mounting sub-plate is connected with the bottom plate through the first floating assembly, the second mounting sub-plate is fixed on the first mounting sub-plate, and the electric connector is connected with the second mounting sub-plate through the third floating assembly.

Based on the technical characteristics, the mounting plate is formed by the first mounting sub-plate and the second mounting sub-plate, the first mounting sub-plate can float relative to the bottom plate, and the electric connector can float relative to the second mounting sub-plate.

The utility model provides a charging frame, charging frame includes the support body and as above-mentioned any one the electric connection device, electric connection device install in on the support body, electric connection device is used for carrying out the electricity with the quick change battery for electric automobile power supply and is connected so that to carry out the charge-discharge to the quick change battery.

Preferably, the frame body has a bearing frame, a battery accommodating space is formed above the bearing frame and used for accommodating a quick-change battery, the electric connecting device is arranged in the bearing frame, the charging frame further comprises a linkage mechanism, the linkage mechanism is arranged below the electric connecting device, so that the quick-change battery is arranged in front of the frame body, the linkage mechanism drives the electric connecting device to move downwards relative to the bearing frame through external force, and after the quick-change battery is arranged on the frame body, the external force is removed, so that the electric connecting device moves upwards to return to be electrically connected with the quick-change battery.

Based on the technical characteristics, the linkage mechanism can drive the bottom plate and the electric connectors above the bottom plate to move downwards before the quick-change batteries are in butt joint in place so as to avoid the damage caused by collision between the electric connectors and the quick-change batteries, and can drive the bottom plate and the electric connectors above the bottom plate to move downwards before the quick-change batteries are moved away so as to avoid the damage caused by the fact that the electric connectors and the quick-change batteries are not separated; meanwhile, after the quick-change battery is in place, the bottom plate and the electric connector above the bottom plate can move upwards to reset so that the electric connector can be in butt joint with the quick-change battery.

The utility model provides an electric automobile, electric automobile includes car body, quick change battery and as above any one the electric connection device, electric connection device install in on the car body, electric connection device be used for with the quick change battery carries out the electricity and connects for the car body provides kinetic energy.

Compared with the prior art, the utility model discloses an above-mentioned at least one technical scheme beneficial effect that can reach includes at least:

the bottom plate of the electric connecting device can float up and down relative to the base, so that the electric connecting device can move the bottom plate and parts above the bottom plate down before the quick-change battery is in place for butt joint so as to avoid the damage caused by collision between the electric connector and the quick-change battery, and move the bottom plate and the parts above the bottom plate down before the quick-change battery is removed so as to avoid the damage caused by non-separation of the electric connector and the quick-change battery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electrical connection device provided in the present invention;

fig. 2 is a schematic structural diagram of a third floating assembly of an electrical connection device provided by the present invention;

fig. 3 is a schematic view of an internal structure of a mounting plate of an electrical connection device provided in the present invention;

fig. 4 is a sectional view of a mounting plate of an electrical connection device provided by the present invention;

fig. 5 is a schematic structural view illustrating an installation of a second limiting member and a second limiting through hole of an electrical connection device according to the present invention;

fig. 6 is a schematic view of a connection structure between a second limiting member and a second installation daughter board of an electrical connection device according to the present invention.

Fig. 7 is a schematic structural view of an electrical connection device provided by the present invention;

fig. 8 is a schematic structural diagram of a charging stand according to the present invention.

In the figure, 1, a base, 2, a bottom plate, 3, a mounting plate, 3a, a second mounting sub-plate, 3b, a first mounting sub-plate, 4, an electrical connector, 5, a third floating assembly, 5a, a third spring, 6, a first guide post, 7, a second guide post, 8, a second limiting part, 9, a second floating assembly, 9a, a limiting post, 9b, a second spring, 10, a second fixing part, 11, a first floating assembly, 11a, a first spring, 12, a first limiting part, 13, a first fixing part, 14, a first limiting through hole, 15, a second limiting through hole, 16, a frame body, 17 and a linkage mechanism.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 3, the present embodiment provides an electrical connection device for docking a quick-change battery for supplying power to an electric vehicle, so as to implement electrical connection, including: the base 1, bottom plate 2, mounting panel 3 and electric connector 4, bottom plate 2 is installed above base 1 and can reciprocate relative to base 1, and mounting panel 3 is installed above bottom plate 2 through first unsteady subassembly 11 for mounting panel 3 can float relative to bottom plate 2 in its plane. An electrical connector 4 is arranged on the mounting plate 3, and the electrical connector 4 can be butted with an electrical connector of a quick-change battery to realize electrical connection. The bottom plate 2 of the electric connecting device can float up and down relative to the base 1, so that the electric connecting device can move the bottom plate 2 and the electric connector 4 above the bottom plate downwards before the quick-change battery is in place for butt joint so as to avoid the damage caused by collision between the electric connector 4 and the quick-change battery, and move the bottom plate 2 and the electric connector 4 above the bottom plate downwards before the quick-change battery is moved away so as to avoid the damage caused by the fact that the electric connector 4 is not separated from the quick-change battery; secondly, the mounting plate 3 provided with the electric connector 4 can float in the plane relative to the bottom plate 2, so that the electric connector 4 can realize fault tolerance within a certain range when being butted with a quick-change battery, and the butting reliability is improved.

It should be noted that the electric vehicle may be an electric vehicle such as a tractor, a mine truck, a tractor, and the like, and when the electric vehicle is a tractor, the electric connection device may be installed on the tractor so as to facilitate quick docking of the quick-change battery with the electric connection device installed on the tractor, thereby realizing power supply of the quick-change battery to the tractor; the implementation method of the electric vehicle such as the mine truck and the tractor is similar to that of the tractor, and further explanation is not provided here.

As shown in fig. 4, the mounting plate 3 includes a first mounting sub-plate 3b and a second mounting sub-plate 3a, both of which have a rectangular structure, the second mounting sub-plate 3a is fixed to the first mounting sub-plate 3b, and a cavity is formed between the first mounting sub-plate 3b and the second mounting sub-plate 3 a. In this embodiment, the first installation daughter board 3b has an upward flange all around, and the second installation daughter board 3a is connected with the flange, so, have certain interval formation cavity between first installation daughter board 3b and the second installation daughter board 3. Of course, in other embodiments, a downward flange may be disposed around the second sub-board 3a, and the first sub-board 3b may be connected to the flange. Specifically, the first mounting sub-board 3b is connected to the bottom plate 2 through the first floating assembly 11, the electrical connector 4 is mounted on the second mounting sub-board 3a, and since the second mounting sub-board 3a is fixed to the first mounting sub-board 3b, the electrical connector 4 and the first mounting sub-board 3b float together when the first mounting sub-board 3b floats with respect to the bottom plate 2.

As shown in fig. 3, the first floating assembly 11 includes four first springs 11a connected between the bottom plate 2 and the first mounting sub-plate 3b, wherein two first springs 11a are symmetrically disposed along the length direction of the first mounting sub-plate 3b and connected to the bottom plate 2 and the first mounting sub-plate 3b, respectively, and the other two first springs 11a are symmetrically disposed along the width direction of the first mounting sub-plate 3b and connected to the bottom plate 2 and the first mounting sub-plate 3b, respectively. In other embodiments, the first mounting sub-board 3b is circular or approximately circular, and the plurality of first springs 11a may be uniformly arranged along a circumferential direction of the first mounting sub-board 3b to connect the bottom board 2 and the first mounting sub-board 3b, respectively. Through setting up first spring, realized that first installation daughter board 3b floats to bottom plate 2 each other along length direction or width direction to drive electric connector 4 and float together along with first installation daughter board 3b in each direction, thereby adapt to the deviation of electric connector and quick change battery when the butt joint.

As shown in fig. 3, in some embodiments, the electrical connection device further includes a pair of first fixing members 13 for connecting the first springs 11a, and two first fixing members 13 in the pair are oppositely disposed, one of which has one end fixed to the bottom plate 2 and the other end having a first extending portion extending toward the first mounting sub-plate 3 b; one end of the other is fixed on the first installation daughter board 3b, the other end is provided with a second extending part extending towards the bottom board 2, and two ends of the first spring 11a are respectively sleeved on the first extending part and the second extending part which are opposite. The first spring is limited and fixed by the first fixing piece 13, and the first spring 11a is prevented from falling off.

As shown in fig. 3, in some embodiments, the electrical connection device further includes a first limiting member 12, the first limiting member 12 is disposed through a first limiting through hole 14 of the first installation daughter board 3b, and a first end of the first limiting member 12 is fixed to the bottom board 2, a second end of the first limiting member 12 passes through the first limiting through hole 14 and has an extension portion parallel to the first installation daughter board 3b at an end of the second end, a width or diameter of the extension portion is larger than a hole diameter of the first limiting through hole 14 to prevent the first limiting member 12 from separating from the first limiting through hole 14, an inner diameter of the first limiting through hole 14 is larger than a diameter of the first limiting member 12 so that the first installation daughter board 3b can float with respect to the bottom board 2 and limit a floating range of the first installation daughter board 3b when floating with respect to the bottom board 2, during the docking process of the quick-change battery and the electrical connection device, when the first installation daughter board 3b floats, the first limiting through hole 14 formed in the first installation daughter board 3b moves along with the first installation daughter board 3b, and since the first end of the first limiting member 12 is fixed on the bottom plate 2, the first limiting member 12 cannot move, and the first limiting through hole 14 moves relative to the first limiting member 12, in the floating process of the first installation daughter board 3b, after the first limiting member 12 contacts with the inner wall of the first limiting through hole 14, the first installation daughter board 3b cannot move any more, and the floating range of the first installation daughter board 3b can be limited, and by arranging an extending portion at the second end of the first limiting member 12, the first limiting member 12 and the first limiting through hole 14 can be prevented from being separated, the extending portion can be a limiting small block or a limiting small plate, and the length of the extending portion can be larger than the inner diameter of the first limiting through hole 14.

It should be noted that, in the present embodiment, five first limiting members 12 are provided and are respectively distributed at four corners and a central position of the mounting plate 3, and in other embodiments, the number of the first limiting members 12 may be limited according to actual situations.

As shown in fig. 7, in some embodiments, the electrical connection device further includes a second floating assembly 9, the second floating assembly 9 is disposed on two sides of the bottom plate 2 along a length direction of the bottom plate 2, a plurality of second floating assemblies 9 are disposed on each side at intervals, each second floating assembly 9 includes a limiting post 9a and a second spring 9b sleeved outside the limiting post 9a, one end of the limiting post 9a is fixed on the base 1, and the other end of the limiting post passes through the bottom plate 2, and a portion of the limiting post 9a extending out of the bottom plate 2 has a height that the bottom plate 2 does not separate from the limiting post 9a, and the second spring 9b is disposed between the base 1 and the bottom plate 2 so that the bottom plate 2 can move up and down relative to the limiting post 9 a. By arranging the second floating assembly 9, the bottom plate can float up and down relative to the base, and particularly, the bottom plate moves down relative to the base before the quick-change battery is in place butted joint or the quick-change battery is removed, so that the electric connector avoids interfering the movement of the quick-change battery or is separated from the quick-change battery so as to facilitate the movement of the quick-change battery; and after the quick-change battery is in place, the bottom plate is reset by the restoring force of the second spring so that the electric connector is in butt joint with the quick-change battery.

Further, in order to avoid the excessive downward movement of the bottom plate 2, a step surface is arranged at a position, close to the bottom plate 2, of the limiting column 9a so as to limit the moving range of the bottom plate 2 relative to the limiting column 9a, and when the bottom plate 2 floats downwards, the bottom plate 2 cannot move downwards after contacting with the step surface, so that the downward floating range of the bottom plate 2 is limited.

As shown in fig. 1, in some embodiments, two first guiding posts 6 are disposed on the second sub-mounting plate 3a, the first guiding posts 6 are symmetrically disposed on two sides along the length direction of the second sub-mounting plate 3a or two sides along the width direction of the second sub-mounting plate 3a, the first guiding posts 6 can be matched with the first mating member of the quick-change battery to facilitate the positioning of the electrical connector and the quick-change battery, and by disposing the first guiding posts 6 on the second sub-mounting plate 3a, when the quick-change battery is mated with the electrical connector, the first guiding posts 6 can play a role of guiding the quick-change battery with a first precision to facilitate the mating of the quick-change battery and the electrical connector.

In other embodiments, when there are a plurality of electrical connectors 4, the first guiding posts 6 may also be disposed between the electrical connectors 4, or disposed at corners of the second mounting daughter board 3a, the positions of the first guiding posts 6 may be designed according to practical situations, and meanwhile, the number of the first guiding posts 6 may be 3, 4, 5 or more, and the number of the first guiding posts 6 may be designed according to practical situations.

As shown in fig. 1 and 2, in the present embodiment, four electrical connectors 4 are provided, the four electrical connectors are respectively arranged in two rows and two columns, each electrical connector 4 is respectively connected to the second mounting sub-board 3a in a floating manner through the third floating assembly 5, so that each electrical connector 4 is floating relative to the second mounting sub-board 3a in a respective plane, and thus, a certain fault tolerance can be achieved when each electrical connector is docked with a quick-change battery, and the docking reliability is further improved.

Further, the third floating assembly 5 includes a third spring 5a connected between the second mounting sub-board 3a and the electrical connector 4, in this embodiment, each electrical connector 4 is connected to the second mounting sub-board 3a through six third springs, two third springs are symmetrically disposed on two sides of the electrical connector 4 along the length direction of each electrical connector 4, the two third springs on the same side are disposed at intervals along the length direction, and one third spring is symmetrically disposed on two sides of the electrical connector 4 along the width direction of each electrical connector 4. When the electrical connector 4 is mated with the electrical terminals of the quick-change battery, since the electrical connector 4 is provided with the third springs in the length direction and the width direction, the electrical connector 4 can float along the respective length direction and the respective width direction, so that each electrical connector can float in the respective direction to adapt to the deviation of each electrical connector from the quick-change battery during mating.

As shown in fig. 2, in some embodiments, the electrical connection device includes a pair of second fixing members 10 for connecting the third spring, and two second fixing members 10 in the pair are oppositely disposed, one end of one of the second fixing members is fixed to the second mounting daughter board 3a, and the other end has a third extending portion extending toward the electrical connector 4; the other first end is fixed on the electrical connector 4, the other end has a fourth extending portion extending toward the second mounting sub-board 3a, and two ends of the third spring are respectively sleeved on the third extending portion and the fourth extending portion which are opposite. Through setting up second mounting 10, carry out spacing fixed to the third spring, avoid the third spring to take place to drop.

As shown in fig. 1 and fig. 5 to 6, in some embodiments, the electrical connection device further includes a second limiting member 8, the second limiting member 8 is disposed through a second limiting through hole 15 on the second installation daughter board 3a, a first end of the second limiting member 8 is fixed on the electrical connector 4, a second end of the second limiting member 8 passes through the second limiting through hole 15 and has an extending portion at an end thereof, a width or a diameter of the extending portion is larger than an aperture of the second limiting through hole 15 to prevent the second limiting member 8 from being detached from the installation board 3, and an inner diameter of the second limiting through hole 15 is larger than a diameter of the second limiting member 8 so that the electrical connector 4 can float with respect to the installation board and limit a floating range of the electrical connector 4 when floating with respect to the second installation daughter board 3a, which is similar to the structure and function of the first limiting member 12. In this embodiment, each electrical connector is provided with four second limiting members 8, two of the second limiting members 8 are respectively disposed at two opposite vertex angles of the electrical connector 4, and the other two second limiting members 8 are symmetrically disposed at two sides of the electrical connector 4 along the length direction thereof. In other embodiments, the number of the first position-limiting members 12 can be increased or decreased according to actual requirements, for example, only two of the first position-limiting members 12 are disposed at opposite corners of the electrical connector, or a plurality of the first position-limiting members 12 are disposed along the length direction and the width direction of the electrical connector 4.

As shown in fig. 1, in the present embodiment, two second guiding pillars 7 are disposed on each electrical connector 4, the second guiding pillars 7 are symmetrically disposed at two vertex angles of the electrical connector 4 where no second locating part is disposed, the second guiding pillars 7 can cooperate with the second mating member on the electrical connector of the quick-change battery to facilitate the positioning of the electrical connector 4 and the electrical connector, and by disposing the second guiding pillars 7 on each electrical connector 4, the second guiding pillars 7 can perform a guiding function with a second precision during the process of mating the electrical connector of the quick-change battery with the electrical connector 4, thereby ensuring the quick mating of the electrical connector and the electrical connector 4.

In other embodiments, the second guiding pillars 7 may also be disposed along the length direction or the width direction of each electrical connector 4, that is, at the edge of the electrical connector 4, and the position of the second guiding pillars 7 may be designed according to practical situations, and meanwhile, the number of the second guiding pillars 7 may be 3, 4, 5 or even more, and the number of the second guiding pillars 7 may be designed according to practical situations.

Example 2

The present embodiment provides an electrical connection device, which is different from embodiment 1 in that the mounting plate 3 is a single-layer plate structure, two of the first springs are symmetrically arranged along the length direction of the mounting plate 3 and are respectively connected to the bottom plate 2 and the mounting plate 3, and the other two springs are symmetrically arranged along the width direction of the mounting plate 3 and are respectively connected to the bottom plate 2 and the mounting plate 3. It is achieved that the mounting plates 3 float relative to each other in the length direction or width direction relative to the base plate 2, thereby bringing the electrical connectors 4 together in all directions. At the same time, each electrical connector 4 is floatingly connected to the mounting plate 3 by a third spring to achieve that each electrical connector 4 floats relative to the mounting plate 3.

Correspondingly, one end of one of the two first fixing pieces 13 arranged in pairs is fixed on the bottom plate 2, and the other end is provided with a first extending part extending towards the mounting plate 3; the other end is fixed on the mounting plate 3, the other end is provided with a second extending part extending towards the bottom plate 2, and two ends of the first spring are respectively sleeved on the first extending part and the second extending part. Two second fixing members 10 arranged in pair are oppositely arranged, one end of one of them is fixed on the mounting plate 3, and the other end has a third extending portion extending toward the electrical connector 4; the other first end is fixed on the electric connector 4, the other end is provided with a fourth extending part extending towards the mounting plate 3, and two ends of the third spring are respectively sleeved on the third extending part and the fourth extending part.

The first limiting part 12 penetrates through a first limiting through hole 14 on the mounting plate 3, and the second limiting part 8 penetrates through a second limiting through hole 15 on the mounting plate 3, so that floating of the mounting plate 3 relative to the bottom plate 2 and floating of the electric connector 4 relative to the mounting plate 3 are respectively realized. At the same time, the first guide post 6 is also provided on the mounting plate 3.

In this embodiment, the mounting plate 3 of the single-layer structure makes the structure of the electrical connection device simpler and more compact, and facilitates the connection of the components to the mounting plate 3.

Example 3

As shown in fig. 6, based on the same concept, the utility model provides a charging rack, charging rack include support body 16 and the above-mentioned electric connection device of embodiment 1 or embodiment 2, electric connection device installs on support body 16, electric connection device is used for carrying out the electricity with the quick change battery for the electric automobile power supply and is connected so that charge and discharge to the quick change battery, through installing electric connection device on support body 16 of charging rack, when needs trade the electricity to the quick change battery, dock the quick change battery with the electric connection device on the support body 16, realize trading the electricity to the quick change battery.

In implementation, the frame body 16 is a frame structure and has a carrying frame, a battery accommodating space is formed above the carrying frame and used for accommodating a quick-change battery, the electrical connection device is arranged in the carrying frame, and an electrical connector of the electrical connection device faces the battery accommodating space to be in butt joint with the quick-change battery after the quick-change battery is put into the battery accommodating space so as to realize electrical connection. The charging rack further comprises a linkage mechanism 17, the linkage mechanism 17 is arranged below the electric connecting device, so that the quick-change battery is arranged in front of the rack body 16, the linkage mechanism 17 drives the electric connecting device to move downwards relative to the bearing frame through external force, and the situation that the quick-change battery is interfered by the battery connecting device when the quick-change battery moves into the rack body 16, so that the quick-change battery and the electric connecting device are subjected to hard collision to damage the electric connecting device is avoided; or to disengage the electrical connection means from the quick-change battery first when the quick-change battery needs to be removed from the holder 16. After the quick-change battery is placed on the frame 16, the external force is released so that the electric connecting device moves back upward to be electrically connected with the quick-change battery. In this embodiment, the linkage mechanism 17 is arranged to drive the electric connection device to move up and down, so that the quick-change battery can enter the frame body 16, and the electric connection device and the quick-change battery can be conveniently butted and separated.

Example 4

Based on the same utility model discloses think, the utility model provides an electric automobile, electric automobile include automobile body, quick change battery and above-mentioned embodiment 1 or embodiment 2's electric connection device, and electric connection device installs on automobile body, and electric connection device is used for carrying out the electricity with the quick change battery and is connected for automobile body provides kinetic energy.

In the implementation, electric vehicles such as electric automobile tractor, ore deposit card, tractor through install electric connection device on electric automobile, dock between quick change battery and the electric connection device, realize providing the electric energy to electric automobile.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is simple, and for the relevant points, reference may be made to the partial description of the system embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (15)

1. An electrical connection device for interfacing with a quick-change battery for powering an electric vehicle to thereby effect an electrical connection, comprising:

a base;

the bottom plate is arranged above the base and can move up and down relative to the base;

the mounting plate is arranged above the bottom plate, and a plurality of electric connectors are arranged on the mounting plate and can be butted with the electric connectors of the quick-change battery to realize electric connection;

a first float assembly, said first float assembly being connected to said base plate and said mounting plate, respectively, such that said mounting plate is floatable in its plane relative to said base plate.

2. The electrical connection device as claimed in claim 1 wherein the first floating assembly comprises a plurality of first springs connected to the base plate and the mounting plate along a length direction and a width direction of the mounting plate, respectively.

3. The electrical connection device according to claim 2, further comprising a plurality of first position-limiting members, wherein the first position-limiting members are disposed through first position-limiting through holes on the mounting plate, and a first end of the first position-limiting member is fixed to the bottom plate, and a second end of the first position-limiting member has an extending portion parallel to the mounting plate to prevent the first position-limiting member from separating from the first position-limiting through holes, and an inner diameter of the first position-limiting through holes is larger than a diameter of the first position-limiting members to limit a floating range of the mounting plate when floating relative to the bottom plate.

4. The electrical connection device as claimed in claim 1, further comprising a second floating assembly, wherein the second floating assembly comprises a position-limiting post and a second spring sleeved outside the position-limiting post, one end of the position-limiting post is fixed on the base, the other end of the position-limiting post passes through the bottom plate, and the second spring is located between the base and the bottom plate so that the bottom plate can move up and down relative to the position-limiting post.

5. The electrical connection device as claimed in claim 4, wherein the position of the position-limiting column near the bottom plate is provided with a step surface to limit the moving range of the bottom plate relative to the position-limiting column.

6. The electrical connection device as claimed in claim 1, wherein the mounting plate is provided with at least two first guiding posts, the first guiding posts are symmetrically arranged on two sides along the length direction of the mounting plate or two sides along the width direction of the mounting plate, and the first guiding posts can be matched with the first mating members of the quick-change battery so as to facilitate the positioning of the electrical connection device and the quick-change battery.

7. The electrical connection device as claimed in any one of claims 2 to 3 wherein each of said electrical connectors is respectively floatably connected to said mounting plate by a third float assembly such that each of said electrical connectors is floatable in a respective plane relative to said mounting plate.

8. The electrical connection device as recited in claim 7, wherein the third floating assembly comprises a plurality of third springs coupled to the electrical connector and the mounting plate along respective lengths and widths of each of the electrical connectors.

9. The electrical connection device as claimed in claim 8, further comprising a plurality of paired first fixing members, wherein two paired first fixing members are disposed opposite to each other, one of the paired first fixing members is disposed on the bottom plate, the other one of the paired first fixing members is disposed on the mounting plate, and two ends of the first spring are respectively sleeved on the paired first fixing members;

and/or, the electric connection device comprises a plurality of second fixing pieces which are arranged in pairs, the two second fixing pieces in pairs are arranged oppositely, one of the second fixing pieces is arranged on the mounting plate, the other one of the second fixing pieces is arranged on the electric connector, and two ends of the third spring are respectively sleeved on the second fixing pieces in pairs.

10. The electrical connection device according to claim 7, further comprising a plurality of second position-limiting members, wherein the second position-limiting members are disposed through second position-limiting through holes of the mounting plate, and a first end of the second position-limiting member is fixed to the electrical connector, and a second end of the second position-limiting member has an extending portion to prevent the second position-limiting member from separating from the mounting plate, and an inner diameter of the second position-limiting through hole is larger than a diameter of the second position-limiting member to limit a floating range of the electrical connector when floating relative to the mounting plate.

11. The electrical connector assembly of claim 7 wherein each of said electrical connectors has at least two second guide posts symmetrically disposed on an edge or a top corner of said electrical connector, said second guide posts being engageable with second mating members on said electrical terminals of said quick-change battery to facilitate positioning of said electrical connector with said electrical terminals.

12. The electrical connection assembly of claim 7, wherein the mounting plate includes a first mounting sub-plate and a second mounting sub-plate, the first mounting sub-plate being coupled to the backplane by the first floating assembly, the second mounting sub-plate being secured to the first mounting sub-plate, the electrical connector being coupled to the second mounting sub-plate by the third floating assembly.

13. A charging stand, characterized in that the charging stand comprises a stand body and an electrical connection device according to any one of claims 1-12, the electrical connection device being mounted on the stand body, the electrical connection device being adapted to be electrically connected to a quick-change battery for supplying power to an electric vehicle for charging and discharging the quick-change battery.

14. A charging stand according to claim 13, wherein the frame body has a carrying frame, a battery receiving space is formed above the carrying frame for accommodating a quick-change battery, the electric connecting device is disposed in the carrying frame, the charging stand further comprises a linkage mechanism, the linkage mechanism is disposed below the electric connecting device, such that before the quick-change battery is disposed on the frame body, the linkage mechanism drives the electric connecting device to move downwards relative to the carrying frame by an external force, and after the quick-change battery is disposed on the frame body, the external force is released so that the electric connecting device moves upwards to be electrically connected with the quick-change battery.

15. An electric vehicle, characterized in that the electric vehicle comprises a vehicle body, a quick-change battery and an electric connection device according to any one of claims 1-12, the electric connection device being mounted on the vehicle body, the electric connection device being adapted to be electrically connected with the quick-change battery to provide kinetic energy to the vehicle body.

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