CN206076300U - A kind of electric automobile chassis structure - Google Patents

Abstract

This utility model provides a kind of electric automobile chassis structure, including battery component, honeycomb installation structure, base assembly and cylinder manifold, honeycomb installation structure includes multiple hollow cellular units, and battery component includes multiple cells, and cell is contained in cellular unit；Base assembly is contained in one end of honeycomb installation structure, base assembly includes multiple base units, base unit includes deck, U-shaped ring, snap ring, electric fuse and spring base, cylinder manifold includes that positive pole confluxes layer and the negative pole confluxed on layer positioned at positive pole confluxes layer, base assembly is placed in negative pole and confluxes on layer, the negative pole layer that confluxes offers multiple through holes, spring base is contained in through hole, in one end inserted base unit of cell, the negative pole of cell passes through snap ring, U-shaped ring and electric fuse and negative pole conflux layer electric connection, the positive pole of cell is confluxed layer electric connection by spring base and positive pole.

Description

An electric vehicle chassis structure

【Technical field】

The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle chassis structure.

【Background technique】

Under the pressure of energy crisis and environmental pollution, safety, environmental protection, and energy saving have become the themes of today's automobile development. Electric vehicles have been highly valued and supported by transportation and energy departments due to their advantages in energy saving, environmental protection, and pollution-free. , The new energy vehicle industry ushered in explosive growth. The battery is the core of electric vehicles, and it is also a comprehensive embodiment of automotive engineering and power engineering technology.

The existing electric vehicle chassis mainly removes the traditional power system such as the engine on the traditional vehicle chassis, and mounts the battery box with the battery on it, and the connection of the single battery in the battery module in the battery box mainly consists of bolt connection and welding. Bolt connection is to screw the single battery to the manifold. This kind of battery module has a large number of manifolds. The positive and negative directions of each single battery have a strict correspondence with the design of the manifold, and the structure is complex. , the installation is difficult, and the maintenance operation is complicated; welding is mainly divided into resistance welding, laser welding and ultrasonic welding. The cost is also high, it is not suitable for production line assembly, and the disassembly and maintenance of the battery module after welding is also inconvenient.

【Content of utility model】

The purpose of the utility model is to provide an electric vehicle chassis structure with simple battery connection structure, convenient installation and easy maintenance and replacement.

In order to achieve the above object, the utility model provides an electric vehicle chassis structure, including a battery assembly, a honeycomb housing structure, a base assembly and a manifold, the honeycomb housing structure includes a plurality of hollow honeycomb units, and the battery assembly includes a plurality of A single battery, the single battery is accommodated in the honeycomb unit; the base assembly is accommodated at one end of the honeycomb accommodation structure, the base assembly includes a plurality of base units, and the base unit includes a card seat and a U-shaped ring , a clasp, a fuse and a spring seat, the clasp is housed in the deck, the U-shaped ring includes two pins, one pin of the U-shaped ring is inserted into the deck and the clasp, The other pin of the U-shaped ring is inserted into the card seat and is in contact with the fuse and conducts, the fuse is accommodated in the snap ring, and the spring seat is arranged at the bottom of the card seat; The bus plate includes a positive bus layer and a negative bus layer on the positive bus layer, the base assembly is placed on the negative bus layer, the negative bus layer is provided with a plurality of through holes, and the spring seat accommodates In the through hole, one end of the single battery is inserted into the base unit, and the negative electrode of the single battery is electrically connected to the negative bus layer through the snap ring, the U-shaped ring and the fuse. The positive electrode of the single battery is electrically connected to the positive electrode bus layer through the spring seat.

In a preferred embodiment, the card seat is in the shape of a hexagonal column, and a circular hole is opened in the center of the card seat, and one end of the card seat extends to the center of the circular hole to form a flange; the flange is provided with Two ear holes located outside the round hole, the two pins of the U-shaped ring are inserted into the two ear holes.

In a preferred embodiment, the clasp includes a head and a plurality of elastic pieces connected to the head, the head leans against the flange of the card seat, and the head is a non-closed circle Ring structure, one end of the non-closed circular head is provided with an insertion hole, the insertion hole is aligned with one of the ear holes of the card holder, and the non-closed circular head of the head is The other end is connected and fixed with the deck.

In a preferred embodiment, the plurality of elastic sheets are all arranged on one side of the head and arranged at intervals on the edge of the head, and the plurality of elastic sheets are bent inward to form protrusions, the The shell of the single battery is formed with a depression near the positive electrode, and the depression of the single battery is clamped by the protrusion of the elastic sheet.

In a preferred embodiment, the fuse is inserted into the circular hole on the opposite side of the flange, one end of the fuse is provided with a locking structure, and one end of the U-shaped ring passes through the An ear hole and the insertion hole, the other end of the U-shaped ring is inserted into the other ear hole of the card holder, and this end of the U-shaped ring is inserted into the locking structure of the fuse and locked by the locking structure. The structure is locked, and one end of the fuse without a locking mechanism is electrically connected to the negative bus layer.

In a preferred embodiment, the spring seat includes a positive contact piece and a spring connected to the positive contact piece, and the other end of the spring is connected to a busbar contact piece; the positive pole of the single battery leans against the The positive electrode contact piece, the bus plate contact piece is in contact with the positive electrode bus layer and conducts.

In a preferred embodiment, it also includes an upper cover plate and a lower cover plate, the upper cover plate is set on the honeycomb housing structure, the lower cover plate is set under the manifold, and the upper cover plate And the lower cover plate are made of aluminum alloy through machining.

In a preferred embodiment, the negative poles of all the single batteries housed in the honeycomb unit face the same direction and are located on the same plane, and are close to the top surface of the honeycomb housing structure; all the negative electrodes housed in the honeycomb unit The negative poles of the single cells all face the same direction and are close to the bottom surface of the honeycomb housing structure.

In a preferred embodiment, the plurality of honeycomb units have the same shape and are adjacently connected, the plurality of honeycomb units are in the shape of a hexagonal prism, and the number of the honeycomb units corresponds to the number of single cells or is greater than the number of single cells quantity.

In a preferred embodiment, it also includes a heat dissipation plate, the heat dissipation plate is provided with a plurality of hexagonal holes, the heat dissipation plate is arranged between the upper cover plate and the honeycomb housing structure, and the honeycomb housing structure Each honeycomb unit passes through a hexagonal hole.

In the electric vehicle chassis structure provided by the utility model, the positive electrode of each single battery is electrically connected with the positive electrode bus layer of the manifold through the spring seat, and the negative electrode of each single battery is connected with the positive electrode of the manifold through the snap ring, U-shaped ring and fuse. The negative bus layer of the bus board is electrically connected, and the installation structure of the single battery is simple and easy to replace.

【Description of drawings】

Fig. 1 is a three-dimensional exploded view of a chassis structure of an electric vehicle provided by the utility model.

FIG. 2 is an enlarged schematic view of area A shown in FIG. 1 .

Fig. 3 is a partial cross-sectional view of an assembled chassis structure of an electric vehicle provided by the utility model.

Fig. 4 is a three-dimensional exploded view of a base unit of a chassis structure of an electric vehicle provided by the present invention.

Fig. 5 is a three-dimensional schematic diagram of an assembled chassis structure of an electric vehicle provided by the utility model.

【detailed description】

In order to make the purpose, technical solution and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the utility model, not for limiting the utility model.

As shown in FIG. 1 , the present invention provides an electric vehicle chassis structure 100 , including an upper cover 10 , a battery assembly 20 , a honeycomb housing structure 30 , a base assembly 40 , a manifold 50 and a lower cover 60 .

Both the upper cover plate 10 and the lower cover plate 60 are made of aluminum alloy through integral machining. The aluminum alloy can be light and high-strength aluminum alloy. For example, its composition can be composed of the following raw materials in weight percentage: Fe: 0.10-0.14%, Mn: 0.03-0.04%, Si: 0.02-0.04%, Ti: 0.01- 0.06%, B: 0.03～0.09%, Zn: 2.2～2.9%, Mg: 0.9～1.0%, Cu: 1.1～1.3%, Ce: 0.5～1.0%, Sc: 0.1～0.4%, the balance is Al, The tensile strength of the above aluminum alloys can reach more than 700MPa.

Specifically, the upper cover plate 10 and the lower cover plate 60 are formed by rolling an aluminum alloy integral plate, and the thickness of the rolled plate can be determined according to the design strength requirements of the electric vehicle and the battery power. The upper cover 10 and the lower cover 60 are rectangular. In other embodiments, the upper surface of the upper cover plate 10 can also be provided with reinforcing bumps for increasing the strength of the upper cover plate 10; the shapes of the upper cover plate 10 and the lower cover plate 60 are different Restricted to rectangles.

Please also refer to FIG. 2 , the honeycomb housing structure 30 includes a plurality of hollow honeycomb units 301 , the honeycomb units include sidewalls 3011 , and the thickness of the sidewalls 3011 is 1 to 2 mm. In this embodiment, the honeycomb unit 301 is a hexagonal prism, the two ends of the hexagonal prism are open, and the sidewall 3011 is perpendicular to the upper cover 10 and the lower cover 60 . In other embodiments, the hexagonal prisms of the honeycomb housing structure 30 may also be in other regular shapes, for example, triangular prisms, square prisms, pentagonal prisms, octagonal prisms, or columns. The honeycomb housing structure 30 further includes a top surface 302 and a bottom surface 303 opposite to the top surface 302 , the top surface 302 and the bottom surface 303 are the top surface 302 and the bottom surface 303 of the honeycomb unit 301 .

Please refer to FIG. 3 , the battery assembly 20 includes a plurality of single batteries 21 . Each single battery 21 is a cylindrical lithium battery and includes a positive electrode 211 and a negative electrode 212 opposite to the positive electrode 211 . The negative electrode 212 is planar, and the negative electrode 212 is integrated with the cylindrical shell of the single battery 21 . Specifically, a recess is formed on the casing of the single battery 21 near the positive electrode 211 .

The height of each honeycomb unit 301 corresponds to or slightly less than the height of a single battery 21, and the honeycomb unit 301 is used to accommodate the single battery 21. The number of honeycomb units 301 can correspond to the number of the single battery 21, and can also be more than The number of single cells 21 . When the number of the honeycomb units 301 corresponds to the number of the single batteries 21 , each honeycomb unit 301 corresponds to accommodate one single battery 21 . When the number of the honeycomb units 301 is greater than the number of the single batteries 21 , some of the honeycomb units 301 accommodate the single batteries, and the other part of the honeycomb units 301 may not accommodate the single batteries 21 . The cylindrical single battery 21 is accommodated in a honeycomb unit 301 corresponding to a hexagonal prism. All the honeycomb units 301 may have the same shape or different shapes, may be adjacent to each other, or partially disconnected, or not connected to each other. For the convenience of manufacture, in this embodiment, the honeycomb units 301 have the same shape and are adjacent to each other. The honeycomb housing structure 30 may be a polymer material with insulating properties, so as to ensure the insulating properties between the single cells 21 .

Please also refer to FIG. 4 , the base assembly 40 includes a plurality of base units 401 , and the base unit 401 includes a clamp seat 402 , a snap ring 403 , a U-shaped ring 404 , a fuse 405 and a spring seat 406 .

The card seat 402 is hexagonal column-shaped and a circular hole 4021 is defined at the center of the card seat 402 , and one end of the card seat 402 extends toward the center of the circular hole 4021 to form a flange 4022 . The flange 4021 defines two ear holes 4023 located outside the round hole.

The clasp 403 includes a head 4031 and a plurality of elastic pieces 4032 connected to the head 4031, the head 4031 is a non-closed ring structure, and one end of the head 4031 is a non-closed ring An insertion hole 4033 is provided. The plurality of elastic pieces 4032 are all disposed on one side of the head 4031 and spaced apart from the edge of the head 4031 , and the plurality of elastic pieces 4032 are bent inward to form protrusions 4034 .

Specifically, the snap ring 403 is accommodated in the circular hole 4021 of the card seat 402, the head 4031 of the snap ring 403 abuts against the flange 4022 of the card seat 402, and the insertion hole 4033 and One of the ear holes 4023 of the card holder 402 is aligned, and one end of the non-closed annular non-insertion hole 4033 of the head 4031 is connected and fixed with the card holder 402 ,

The U-shaped ring 404 includes two pins, one of the pins of the U-shaped ring 404 passes through one of the earholes 4022 and the insertion hole 4033 in turn, and one pin of the U-shaped ring is connected to the The snap ring 403 contacts and conducts, and the other pin of the U-shaped ring 404 passes through another ear hole 4023; the fuse 405 is inserted into the circular hole 4021 on the side opposite to the flange 4022, and the One end of the fuse 405 has a locking mechanism, and the other pin of the U-shaped ring 404 is inserted into the locking structure 4051 of the fuse 405 to be locked by the locking mechanism 4051 . Specifically, the fuse 405 is accommodated in the round hole 4021 of the snap ring 403 .

The spring seat 406 is arranged at the bottom of the card seat 402. The spring seat 406 includes a positive contact piece 4061 and a spring 4062 connected to the positive contact piece 4061. The other end of the spring 4062 is connected to a bus Board contact tab 4063. In other embodiments, the busbar contact piece 4063 is also connected with busbar contact posts.

The base unit 401 is accommodated at one end of the honeycomb unit 301 close to the bottom surface 303, one end of the cylindrical single battery 21 is inserted into the circular hole 4011, and the shell of the cylindrical single battery 21 (ie The depression of the negative pole of the single battery) contacts and cooperates with the protrusion 4034 of the snap ring 402 ; the positive pole 211 of the cylindrical single battery 21 leans against the positive contact piece 4061 of the spring seat 406 . Specifically, each base unit 401 corresponds to one honeycomb unit 301 .

The bus plate 50 includes a positive bus layer 501 and a negative bus layer 502 on the positive bus layer 501 . An insulating layer 503 is disposed between the positive electrode bus layer 501 and the negative electrode bus layer 502 . The negative electrode bus layer 502 defines a plurality of through holes 5022 , and the spring seat 406 is accommodated in the through holes 5022 . Specifically, one end of the fuse 405 without the locking mechanism 4051 is electrically connected to the negative bus layer 502 . The negative poles 212 of all the cells 21 accommodated in the honeycomb unit 301 face the same direction and are located on the same plane, that is, close to the top surface 302 ; the positive poles 211 all face the same direction and are close to the bottom surface 303 .

Please refer to FIG. 5 together. During assembly, the base assembly 40 is arranged on the manifold 50, the spring seat 406 is accommodated in the through hole 5022, and the manifold contact piece 4063 of the spring seat 406 is in contact with the manifold. The positive electrode bus layer 501 is in contact with and conduction, and then the honeycomb housing structure 30 is sleeved on the base assembly 40, the bottom surface 303 of the honeycomb housing structure is in contact with the bus board 50, wherein the honeycomb housing structure 30 can be connected to the bus board 50 bonded by epoxy resin. Then put the single battery 21 into the corresponding honeycomb housing unit 301, the positive electrode 211 of each single battery 21 is against the positive contact piece 4061, and the depression of the single battery 21 is in contact with the snap ring 403 The protrusion 4034 of the cylindrical unit battery 21 is engaged in the base unit 401, and the shell of the cylindrical unit battery 21 (that is, the negative pole of the cylindrical unit battery 21) is in contact with the snap ring 403, one end of the U-shaped ring cooperates with the insertion hole 4033 of the snap ring so as to be in electrical contact with the snap ring, and the other end of the U-shaped ring cooperates with the locking mechanism 4051 of the fuse 405 so as to be in contact with the locking mechanism 4051 of the fuse 405. The fuse is electrically connected; the end of the fuse away from the locking mechanism is further connected to the negative bus layer, for example, the shell of the single battery 21 is electrically connected to the negative bus layer through a U-shaped ring and the fuse in turn. Finally, the manifold 50 is placed on the lower cover plate 60, and then the upper cover plate 10 is placed on the top surface 302 of the honeycomb housing structure 30, and the negative electrodes 212 of all the single cells 21 are located on the same plane and towards the upper cover plate 10 .

Further, the electric vehicle chassis structure 100 provided by the utility model also includes a heat dissipation plate 70, and the heat dissipation plate 70 is provided with a plurality of hexagonal holes, and the heat dissipation plate is arranged on the upper cover plate 10 and the honeycomb Between the housing structures 30, each honeycomb unit 301 of the honeycomb housing structure passes through a hexagonal hole. It can be understood that the shape of the hole opened by the heat dissipation plate 70 corresponds to the shapes of the honeycomb unit 301 such as a triangular prism, a quadrangular prism, a pentagonal prism, an octagonal prism, or a column, and may be triangular, quadrilateral, or pentagonal. , octagonal or circular shapes. Specifically, the heat dissipation plate 70 can be made of high thermal conductivity insulating material, and the heat dissipation plate 70 can also be made of phase change material.

In the electric vehicle chassis structure 100 provided by the utility model, the positive pole of each single battery 21 is electrically connected to the positive electrode bus layer 501 of the manifold 50 through the spring seat 406, and the negative pole of each single battery is connected through the snap ring 403, The U-shaped ring 404 and the fuse 405 are electrically connected to the negative bus layer 502 of the bus board 50 , and the installation structure of the single battery 21 is simple and easy to replace.

The utility model is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (10)

1. a kind of electric automobile chassis structure, it is characterised in that：Including battery component, honeycomb installation structure, base assembly and remittance Stream plate, the honeycomb installation structure include multiple hollow cellular units, and the battery component includes multiple cells, described Cell is contained in cellular unit；

The base assembly is contained in one end of the honeycomb installation structure, and the base assembly includes multiple base units, institute Stating base unit includes deck, U-shaped ring, snap ring, electric fuse and spring base, and the snap ring is contained in the deck, described U-shaped Ring includes two pins, and a pin of the U-shaped ring inserts the deck and snap ring, the other pin insertion of the U-shaped ring The deck and contact and turn on the electric fuse, the electric fuse is contained in the snap ring, and the spring base is arranged at The bottom of the deck；

The cylinder manifold includes that positive pole confluxes layer and the negative pole confluxed on layer positioned at positive pole confluxes layer, and the base assembly is placed in institute State negative pole to conflux on layer, the negative pole layer that confluxes offers multiple through holes, and the spring base is contained in the through hole, described One end of cell is inserted in the base unit, and the negative pole of the cell passes through the snap ring, the U-shaped ring and institute State electric fuse and the negative pole to conflux layer electric connection, the positive pole of the cell is converged with the positive pole by the spring base Fluid layer is electrically connected with.

2. electric automobile chassis structure as claimed in claim 1, it is characterised in that：The deck is hexa-prism and the card The center of seat offers circular hole, and one end of the deck extends to form flange to the center of circular hole；The flange is offered Two earholes being located on the outside of the circular hole, two pins of the U-shaped ring insert described two earholes.

3. electric automobile chassis structure as claimed in claim 2, it is characterised in that：The snap ring includes head and multiple connections The flexure strip of the head, the head are resisted against the flange of the deck, circular ring of the head for non-closed, institute The one end for stating the annular shape of head non-closed is provided with spliced eye, and the spliced eye is aligned with a wherein earhole of the deck, The other end of the annular shape of the head non-closed is connected with deck.

4. electric automobile chassis structure as claimed in claim 3, it is characterised in that：The plurality of flexure strip may be contained within described The side of head and the edge of the head is arranged at intervals at, the plurality of flexure strip bends inwards to form projection, the monomer The shell of battery is formed with depression in the position near the positive pole, and the depression of the cell is fastened in the flexure strip It is raised.

5. electric automobile chassis structure as claimed in claim 4, it is characterised in that：The electric fuse is opposite in the flange The circular hole is inserted in side, and one end of the electric fuse is provided with locking mechanism, and wherein one end of the U-shaped ring sequentially passes through institute An earhole and the spliced eye are stated, the other end of the U-shaped ring inserts another earhole of the deck and inserts the electric fuse Locking mechanism and locked by the locking mechanism, the one end of the electric fuse without retaining mechanism and the negative pole layer that confluxes is electrical Connection.

6. electric automobile chassis structure as claimed in claim 5, it is characterised in that：The spring base include positive contact piece and The spring being connected on the positive contact piece, the other end of the spring are connected with cylinder manifold contact chip；The cell Positive pole be resisted against the positive contact piece, the cylinder manifold contact chip and the positive pole layer that confluxes is contacted and is turned on.

7. electric automobile chassis structure as claimed in claim 1, it is characterised in that：Also include upper cover plate and lower cover, it is described Upper cover plate is covered on the honeycomb installation structure, and the lower cover is arranged under the cylinder manifold, the upper cover plate and lower cover Plate is made by machining by aluminium alloy.

8. electric automobile chassis structure as claimed in claim 1, it is characterised in that：It is all to be contained in the cellular unit The negative pole of cell is towards same direction, and is generally aligned in the same plane, and near the top surface of the honeycomb installation structure；It is all The negative pole of the cell being contained in the cellular unit is towards same direction, and the bottom of the close honeycomb installation structure Face.

9. electric automobile chassis structure as claimed in claim 1, it is characterised in that：The plurality of cellular unit shape it is identical and Adjacent connection, the plurality of cellular unit position hexa-prism, the quantity of the cellular unit corresponding to cell quantity or Quantity of the person more than cell.

10. electric automobile chassis structure as claimed in claim 7, it is characterised in that：Also include heat sink, the heat sink is opened Multiple hexagonal holes are provided with, the heat sink is arranged between the upper cover plate and the honeycomb installation structure, the honeycomb is received Each cellular unit for holding structure passes through a hexagonal hole.