CN115570963A - An electric vehicle directly assembled with batteries - Google Patents

Abstract

The invention provides an electric vehicle directly assembled with batteries, comprising: a battery module group for assembling a lower vehicle body, including a battery frame, and batteries and high-voltage accessories arranged in the battery frame; an upper body, an upper body Installed on the battery module group; and the torque box, the torque box is installed on the battery module group; wherein, the connection between the two sides of the battery frame and the upper body is a multi-layer trapezoidal structure, and each layer of the upper body has a trapezoidal structure. The connection point for mutual mating connection with the upper body. In the present invention, the connection between the battery frame and the upper vehicle body in the battery module group is set as a multi-layer trapezoidal structure, and then a connection point for matching with the upper body is provided on each layer of the trapezoidal structure, so that it can be connected only through the connection point The battery module group and the upper body facilitate the direct connection between the upper body and the battery module group. After the battery module group is assembled into the lower body, it can be directly assembled with the upper body on the bus.

Description

An electric vehicle directly assembled with batteries

technical field

The invention relates to the field of automobiles, in particular to an electric automobile directly assembled with electric cores.

Background technique

For electric vehicles, the power battery is connected to the lower body floor through screw connections, snap connections, etc., the body and the battery pack are independent structures, and there are redundant designs for the structure and functions of the battery pack shell and the lower floor of the body. The independent battery pack structure accounts for about 20% to 30% of the total weight of an ordinary passenger car, which accounts for a relatively large proportion. However, due to the performance requirements of components, the lightweight design of the battery pack shell is difficult, and the effect of optimizing and improving the driving range of the vehicle is small. The battery pack is arranged under the floor of the lower body, occupying a large space in the Z direction, and the lower floor is high from the ground, occupying the interior space of the vehicle.

In order to solve this problem, the existing electric vehicles generally integrate the battery on the lower body to save the Z-direction space of the car. In the car with the upper and lower body separated, the battery module group is an important component of the lower body, which needs to be directly connected with the The upper body connection, the current connection structure is very complicated, and it is not convenient to assemble directly on the bus. At the same time, when designing the upper body structure, it is necessary to design according to the structure of the battery module group or redesign the lower body after the design is completed.

In view of this, the present invention is proposed.

Contents of the invention

The invention provides an electric vehicle directly assembled with batteries to solve the technical problems raised in the prior art.

The invention provides an electric vehicle directly assembled with batteries, including:

The battery module group is used to assemble the lower body, including the battery frame, and the battery cells and high-voltage accessories arranged in the battery frame;

The upper body, the upper body is installed on the battery module group;

And the torque box, the torque box is installed on the battery module group;

Wherein, the connection between both sides of the battery frame and the upper body is a multi-layer trapezoidal structure, and each layer of the upper body is provided with a connection point that cooperates with the upper body.

In order to save the Z-direction space of the automobile, this application has made the following designs: 1. The battery cells and high-voltage accessories are integrated in the lower body of the automobile; 2. The floor structure of the conventional automobile is used as the upper cover of the battery frame; through the above two The design avoids the encroachment of the chassis space by the battery pack structure, optimizes the Z-direction space of the entire vehicle, reduces the number of vehicle components, reduces the development cost and manufacturing cost of the vehicle, realizes the lightweight design of the vehicle, and improves the driving range.

In this solution, by assembling the battery cells and high-voltage accessories in the battery frame and integrating them into a battery module group as part of the lower body, the torque box installed in the battery module group can prevent the torque generated by the collision of the car from damaging the battery module group and improve To ensure the safety of electric vehicles, the upper body is directly connected to the battery module group, and the connection between the battery frame in the battery module group and the upper body is set as a multi-layer trapezoidal structure, and then the upper body is connected to each layer of the trapezoidal structure. With the connection point of the connection, the battery module group and the upper body can be connected only through the connection point, which is convenient for the upper body to be directly connected with the battery module group. After the battery module group is assembled into the lower body, it can be directly assembled with the upper body on the bus At the same time, since the connection points are set on each layer of the trapezoidal structure on both sides of the battery frame, when the length of the upper body in the X direction does not change, the connection structure does not need to be redesigned, let alone the lower body. Structural design, so it is convenient for the research and development and design of the upper body of the car.

In a further solution of the present invention, the electric vehicle also includes: a floor, and the floor cover is arranged on the battery frame; the battery frame is spliced by bracket body profiles to form a square shape, the battery frame and the floor are surrounded by a battery installation cavity, and the high-voltage accessories and battery cells Set in the battery installation cavity, the high-voltage accessory is electrically connected with the battery cell for charging the battery cell.

In this solution, by directly encapsulating the floor on the battery frame, the floor not only serves as the floor structure of a conventional car, but also serves as the top packaging plate of the battery installation cavity, which can further reduce the space occupied by the Z-direction in the lower body of the car. The high-voltage accessories and batteries are installed in the battery frame to realize the integration of batteries and high-voltage accessories on the lower body. The battery frame and the floor can provide protection for the batteries and high-voltage accessories. The high-voltage accessories are electrically connected to the batteries and are also connected to the charging interface. Electrical connection, through the charging interface to connect with external charging piles or other power sources that can charge batteries, and then realize high-voltage charging for batteries.

In a further solution of the present invention, a floor connection point is provided on the profile of the support body, and the floor is connected to the battery frame through the floor connection point, and the floor connection point adopts a bolt connection structure.

In this solution, by setting the floor connection point on the bracket body profile of the battery frame, and then connecting the floor through the connection point, the surroundings of the floor can be effectively supported by the bracket body profile of the battery frame, and other The supports provide a supporting effect for the floor.

In a further solution of the present invention, the seat installation assembly is fixed on the floor by gluing, and the seat installation assembly includes: a first crossbeam, a second crossbeam, a third crossbeam and a mounting seat, the first crossbeam, the second crossbeam, the first crossbeam Both ends of the three beams are arranged on the battery frame, wherein the mounting base is arranged on the first beam and the second beam, and the first beam, the second beam and the third beam are parallel to each other.

In this solution, by setting the seat installation components, it is convenient for the car to install the seat directly during assembly, and by directly installing the two ends of the first crossbeam, the second crossbeam, and the third crossbeam on the battery frame, the battery frame can be The first crossbeam, the second crossbeam, and the third crossbeam provide effective support. By setting the mounting seats on the first crossbeam and the second crossbeam, it is convenient to directly install the front seats in the car, and the rear seats can be directly installed on the third crossbeam. On the crossbeam, in order to better provide support for the rear seats, two longitudinal beams can also be arranged on the third crossbeam, and the two ends of the longitudinal beams are respectively installed on the third crossbeam and the bracket body of the battery frame, so as to better provides support for the car's rear seats.

In a further solution of the present invention, the front and rear ends of the battery module group are each provided with a wire harness interface, and the wire harness interface is provided with a power supply interface and a cooling interface, wherein the power supply interface is electrically connected to the battery cell and high-voltage accessories, and the cooling interface is connected to the battery. The cooling structures of the module groups are connected.

In this solution, by integrating the power supply interface and the cooling interface on the wiring harness interface, it is possible to avoid installing various types of interfaces on the battery module group. It can charge the battery cells, and the cooling interface is connected with the cooling interface, which can provide cooling effect for the battery module group and facilitate the improvement of the performance of the battery cells in the battery module group. Similarly, the wiring harness interface can also be installed with other devices connected to the battery module group. structure, which will not be described in detail in this paper.

In a further solution of the present invention, the cooling structure includes a cooling water channel arranged in the floor for cooling the electric core and high-voltage accessories; the cooling interface includes a water inlet and a water outlet, respectively connected to both ends of the cooling water channel, and the water inlet and The water outlet is used to enter and exit the heat exchange medium.

In this solution, by integrating the cooling structure of the battery module group in the floor, that is, setting the cooling water channel in the floor, the Z-direction space of the car can be further saved. By designing the cooling water channel in the floor, and then through the The water inlet and outlet are connected to the cooling system of the car, and the heat exchange medium cooled by the cooling system absorbs the heat emitted by the battery cells and high-voltage accessories in the battery module group, thereby achieving the effect of keeping the battery module group warm, so it can effectively Improve the performance of the battery module pack.

In a further solution of the present invention, the connection between the battery frame and the upper body is a trapezoidal structure with upper and lower layers, and a set of connection points connected to the upper body are respectively provided on the left and right sides of the battery frame, and each set of connection points includes three on the upper layer. One first connection point and five second connection points arranged on the lower floor, the first connection point is used to connect with the right door sill beam or left door sill beam on the upper body, and the second connection point is used to connect with the inner door sill on the upper body boards are connected.

In this solution, the two sides of the battery frame are set as upper and lower layers of trapezoidal interfaces, and the first connection point and the second connection point are respectively set on the upper and lower layers, and the left first connection point is connected to the left threshold , the first connection point on the right side is connected to the right door sill, and the second connection point is connected to the door sill inner panel of the upper body; the two layers of connection points are respectively connected to different parts of the upper body, which can improve the stability of the connection, and at the same time , which improves the efficiency of vehicle body assembly when the vehicle is assembled on the bus,

In a further solution of the present invention, the high-voltage accessory includes an on-board charger, a high-voltage power distribution box, and a DC converter, wherein at least two of the on-board charger, the high-voltage power distribution box, and the DC converter are integrated into one module.

In this solution, at least two of the on-board charger, high-voltage power distribution box and DC converter are integrated in one module to facilitate the maintenance of high-voltage accessories. Generally speaking, the power distribution power supply and the on-board charger are set in the same module Inside, the DC converter is set separately.

In a further solution of the present invention, the torsion box includes a left front torsion box and a right front torsion box arranged at the front end of the battery module group, and a left rear torsion box and a right rear torsion box arranged at the rear end of the battery module group.

In a further solution of the present invention, two torsion box connection points are respectively provided on both sides of the front end and the rear end of the battery module group, and each two torsion box connection points are connected to the left front torsion box, right front torsion box, left rear torsion box and One of the right rear torque boxes.

In this scheme, four torque box connection points are respectively set at the front and rear ends of the battery frame on the battery module group. Attachment points are also provided on the upper surface of the box for attachment to the upper body.

In a further solution of the present invention, three third connection points are provided in the middle of the battery installation cavity, the third connection points pass through the floor, and the third connection points are used for connecting to the upper body.

In this solution, the connection strength between the battery module group and the upper body can be further improved by setting the third connection point in the battery installation cavity and penetrating the floor to connect the upper body. At the same time, the third connection point can be in the form of a pillar, which can Provides effective support for the middle of the floor.

In a further solution of the present invention, the first connection point, the second connection point, the third connection point and the torque box connection point all adopt a bolt connection structure.

In a further solution of the present invention, the bracket body profiles on both sides of the battery frame are provided with passages connecting the front and rear ends of the vehicle body. The ventilation pipe is located in the bracket body profiles on the same side, or in the bracket body profiles on both sides respectively.

In this solution, by arranging brake pipelines and air suspension ventilation pipes in the bracket body of the battery frame, additional installation of pipelines on the vehicle body can be avoided, thereby simplifying the management of auto parts.

Compared with the prior art, the present invention has the following beneficial effects:

The invention integrates the battery cells and high-voltage accessories into the battery frame and integrates them into a battery module group as a part of the lower vehicle body. The torque box is installed in the battery module group to prevent the torque generated by the car from hitting the battery module group from damaging the battery module group, and improves the performance of the electric vehicle. The upper body is directly connected to the battery module group, and the connection between the battery frame in the battery module group and the upper body is set as a multi-layer trapezoidal structure, and then the upper body is connected to the upper body by setting the trapezoidal structure on each layer. The connection point, the battery module group and the upper body can be connected only through the connection point, which is convenient for the direct connection between the upper body and the battery module group. After the battery module group is assembled into the lower body, it can be directly assembled with the upper body on the bus; at the same time , since the connection points are set on each layer of the trapezoidal structure on both sides of the battery frame, when the length of the upper body in the X direction does not change, the connection structure does not need to be redesigned, and there is no need to change the structural design of the lower body. Therefore, it is convenient for the development and design of the upper body of the car.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic structural diagram of a battery module group provided by one of the embodiments of the present invention;

Fig. 2 is an exploded schematic diagram of a battery module group provided by one embodiment of the present invention;

Fig. 3 is an exploded schematic diagram of the connection between the floor and the seat installation assembly provided by one of the embodiments of the present invention;

Figure 4 is a schematic structural diagram of the connection between the two sides of the battery module group and the upper body provided by one of the embodiments of the present invention;

Fig. 5 is a top view of a battery module group provided by one embodiment of the present invention.

reference sign

001. Battery cell; 002. Vehicle charger and DC converter integrated unit;

003. High voltage distribution box; 004. Floor;

005. Seat installation components; 006. Battery frame;

007. Glue application; 008. Brake pipeline;

009. Air suspension snorkel; 010. Threshold beam;

011. Door sill inner panel; 012. Front harness interface;

013. Rear harness interface; 014. Left front torque box;

015. Right front torque box; 016. Left rear torque box;

017. Right rear torque box; 018. Floor connection point;

019, the first connection point; 020, the upper body;

021. The second connection point; 022. The torque box connection point;

023. The third connection point.

detailed description

In order to make the above and other features and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art, and are only exemplary rather than restrictive.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature indirectly through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As shown in Figures 1-5, the present invention provides an electric vehicle directly assembled with batteries 001, including:

The battery module group is used to assemble the lower body, including the battery frame 006, and the battery cell 001 and high-voltage accessories arranged in the battery frame 006;

The upper body 020, the upper body 020 is installed on the battery module group;

And the torque box, the torque box is installed on the battery module group;

Wherein, the connection between both sides of the battery frame 006 and the upper body 020 is a multi-layer trapezoidal structure, and each layer of the trapezoidal structure of the upper body 020 is provided with a connection point that cooperates with the upper body 020 .

In order to save the Z-direction space of the car, this application has made the following designs: 1. The battery cell 001 and the high-voltage accessories are integrated in the lower body of the car; 2. The floor 004 structure of the conventional car is used as the upper cover of the battery frame 006; 3. , Integrate the cooling structure of the battery module group in the floor 004, thereby avoiding the battery pack structure from encroaching on the chassis space, optimizing the Z-direction space of the entire vehicle, reducing the number of vehicle components, reducing vehicle development costs and manufacturing costs, Realize the lightweight design of the whole vehicle and improve the driving range.

It can be understood that the DC converter (DC converter: DCDC) mentioned in the present invention should be a converter for converting the DC power supply voltage into any DC voltage, the on-board charger (OBC), the main function: the power grid voltage via The ground AC charging pile and AC charging port are connected to the car charger to charge the electric battery. DCDC and OBC are integrated in one package, which is DCDC&OBC; high-voltage power distribution box 003 (Battery energy Distribution Unit, BDU) is also called battery disconnection The battery disconnect unit is an important accessory in the high-voltage circuit of new energy vehicles; the front suspension is the suspension connected to the front axle, mainly composed of leaf springs, shock absorbers, stabilizer bars, buffer blocks and other components. The rear suspension is the same, and the front suspension and the rear suspension are air suspensions in this application; the X, Y, and Z directions of the car refer to: X-longitudinal direction, forward direction along the centerline of the vehicle; Y-side In the direction of the X-axis, it is perpendicular to the same plane as the X-axis, and the X-axis is left to the left; in the Z-vertical direction, it is vertical to the XY plane.

In summary, the present invention assembles the battery cell 001 and the high-voltage accessories into the battery frame 006, and integrates them into a battery module group as a part of the lower vehicle body. The torque box is installed on the battery module group to prevent the torque generated by the vehicle collision from damaging the battery module group. , which improves the safety of the electric vehicle, the upper body 020 is directly connected to the battery module group, and the connection between the battery frame 006 in the battery module group and the upper body 020 is set as a multi-layer trapezoidal structure, and then through each layer of the trapezoidal structure The upper part is provided with a connection point for cooperating with the upper body 020, and the battery module group and the upper body 020 can be connected only through the connection point, so that the upper body 020 can be directly connected with the battery module group. After the battery module group is assembled into the lower body, it can It is directly assembled with the upper body 020 on the bus; at the same time, since the connection points are set on each layer of trapezoidal structure on both sides of the battery frame 006, when the length of the upper body 020 in the X direction does not change, the connection structure does not need The redesign does not need to change the structural design of the lower body, so it is convenient for the research and development of the upper body 020 of the car.

Please refer to Fig. 2 further. In a further solution of the present invention, the electric vehicle also includes: a floor 004, and the floor 004 is covered on the battery frame 006; A battery installation cavity is surrounded, and the high-voltage accessories and the battery cell 001 are arranged in the battery installation cavity, and the high-voltage accessories are electrically connected with the battery cell 001 for charging the battery cell 001.

In this solution, by directly packaging the floor 004 on the battery frame 006, the floor 004 not only serves as the floor 004 structure of a conventional car, but also serves as the top packaging plate of the battery installation cavity, which can further reduce the Z-direction space in the lower body of the car. At the same time, install the high-voltage accessories and the battery cell 001 in the battery frame 006 to realize the integration of the battery cell 001 and the high-voltage accessories on the lower body. The battery frame 006 and the floor 004 can provide protection for the battery cell 001 and the high-voltage accessories. The high-voltage accessories and The battery cell 001 is electrically connected, and is also electrically connected to the charging interface. Through the charging interface, it is connected to an external charging pile or other power source that can charge the battery cell 001, thereby realizing high-voltage charging for the battery cell 001.

For the battery installation cavity, the present invention can also set other structures in the battery installation cavity to provide a support effect for the floor 004, specifically, a support frame is provided in the battery installation cavity, and the support frame includes two support longitudinal beams and two support assemblies The vertically connected beams and the two supporting longitudinal beams are parallel to each other. The support frame also divides the battery installation cavity into several small cavities, and the battery cells 001 are installed in the small cavities by subpackaging them into small battery cells 001.

In a further solution of the present invention, a floor connection point 018 is provided on the bracket body profile, and the floor 004 is connected to the battery frame 006 through the floor connection point 018, and the floor connection point 018 adopts a bolt connection structure.

In this solution, by setting the floor connection point 018 on the bracket body profile of the battery frame 006, and then connecting the floor 004 through the connection point, the surroundings of the floor 004 can be effectively supported by the bracket body profile of the battery frame 006, and the battery cavity Other supports can also be arranged in the body to provide support for the floor 004.

Please refer to Fig. 2 further, in a further solution of the present invention, the seat installation assembly 005 is fixed on the floor 004 by gluing 007, and the seat installation assembly 005 includes: a first crossbeam, a second crossbeam, a third crossbeam and a mount , both ends of the first crossbeam, the second crossbeam and the third crossbeam are arranged on the battery frame 006, wherein the mounting seat is arranged on the first crossbeam and the second crossbeam, and the first crossbeam, the second crossbeam and the third crossbeam are connected to each other parallel.

In this solution, by setting the seat installation assembly 005 (not marked in detail in the specific structure diagram), it is convenient for the car to install the seat directly during assembly, and by directly connecting the two ends of the first crossbeam, the second crossbeam and the third crossbeam Installed on the battery frame 006 so that the battery frame 006 can provide effective support for the first crossbeam, the second crossbeam and the third crossbeam. By setting the mounts on the first crossbeam and the second crossbeam, it is convenient to directly install the front row of the car Seats, the rear seats can be directly installed on the third crossbeam, in order to better provide support for the rear seats, two longitudinal beams can also be set on the third crossbeam, and the two ends of the longitudinal beams are respectively installed on the third crossbeam. The three beams and the bracket body of the battery frame 006 provide better support for the rear seats of the car.

In a further solution of the present invention, a wiring harness interface is provided at the front and rear ends of the battery module group (the wiring harness interface includes the front wiring harness interface 012 and the rear wiring harness interface 013), and the wiring harness interface is provided with a power supply interface (not marked in the figure) And a cooling interface (not marked in the figure), wherein the power supply interface is electrically connected to the battery cell 001 and the high-voltage accessories, and the cooling interface is connected to the cooling structure of the battery module group.

In this solution, by integrating the power supply interface and the cooling interface on the wiring harness interface, it is possible to avoid installing various types of interfaces on the battery module group, and at the same time, the power supply interface is directly electrically connected to the battery cell 001, high-voltage accessories, and the charging interface. Furthermore, it is possible to charge the battery cell 001, and the cooling interface is connected to the cooling interface, which can provide a cooling effect for the battery module group and facilitate the improvement of the performance of the battery module group 001. Similarly, the wiring harness interface can also be installed with other battery modules. The connected structure will not be described in detail in this paper.

In a further solution of the present invention, the cooling structure includes a cooling water channel (not marked in the figure) arranged in the floor 004 for cooling the electric core 001 and high-voltage accessories; the cooling interface includes a water inlet (not marked in the figure) and The water outlet (not marked in the figure) communicates with both ends of the cooling water channel respectively, and the water inlet and water outlet are used to enter and exit the heat exchange medium.

In this solution, by integrating the cooling structure of the battery module group in the floor 004, that is, setting the cooling water channel in the floor 004, the Z-direction space of the car can be further saved. By designing the cooling water channel in the floor 004, and then passing the wiring harness The water inlet and water outlet on the interface are connected with the cooling system of the car, and the heat exchange medium cooled by the cooling system absorbs the heat emitted by the battery cell 001 and high-voltage accessories in the battery module group, thereby achieving the effect of keeping the battery module group warm. Therefore, the performance of the battery module group can be effectively improved.

Please refer to Fig. 4 further. In a further solution of the present invention, the connection between the battery frame 006 and the upper body 020 is a trapezoidal structure with upper and lower layers, and the left and right sides of the battery frame 006 are respectively provided with a set of connection points connected to the upper body 020. Each set of connection points includes three first connection points 019 arranged on the upper layer and five second connection points 021 arranged on the lower layer. The first connection points 019 are used to connect with the right door sill beam 010 or the left door sill beam 010, and the second connection point 021 is used to connect with the door sill inner panel 011 on the upper body 020.

In this solution, by setting the two sides of the battery frame 006 as upper and lower layers of trapezoidal interfaces, and setting the first connection point 019 and the second connection point 021 on the upper and lower layers respectively, through the left first connection point 019 and the The left sill is connected, the first connection point 019 on the right is connected to the right sill, and the second connection point 021 is connected to the sill inner panel 011 of the upper body 020; it is connected to different parts of the upper body 020 through two layers of connection points , can improve the stability of the connection, and at the same time, improve the efficiency of the assembly of the vehicle body on the bus,

In a further solution of the present invention, the high-voltage accessories include an on-board charger, a high-voltage power distribution box 003, and a DC converter, wherein at least two of the on-board charger, the high-voltage power distribution box 003, and the DC converter are integrated into one module; In Figure 1, the integrated unit of the on-board charger and the DC converter is identified as 002.

In this solution, at least two of the on-board charger, the high-voltage power distribution box 003 and the DC converter are integrated into one module to facilitate the maintenance of high-voltage accessories. Generally speaking, the power distribution power supply and the on-board charger are set in the same In the module, the DC converter is set separately.

Please refer to Fig. 5 further. In a further solution of the present invention, the torsion box includes a left front torsion box 014 and a right front torsion box 015 arranged at the front end of the battery module group, and a left rear torsion box 016 and a right rear torsion box arranged at the rear end of the battery module group. Box 017.

In a further solution of the present invention, two torque box connection points 022 are respectively provided on both sides of the front end and the rear end of the battery module group, and each two torque box connection points 022 are respectively connected to the left front torque box 014, the right front torque box 015, the left One of the rear torque box 016 and the right rear torque box 017.

In this solution, four torque box connection points 022 are respectively set at the front and rear ends of the battery frame 006 on the battery module group. The torque box, the upper surface of the torque box is also provided with connection points for connecting with the upper body 020.

In a further solution of the present invention, three third connection points 023 are provided in the middle of the battery installation cavity, the third connection points 023 penetrate the floor 004 , and the third connection points 023 are used for connecting the upper body 020 .

In this solution, by setting the third connection point 023 in the battery installation cavity, and penetrating the floor 004, and then connecting the upper body 020, the connection strength between the battery module group and the upper body 020 can be further improved, and at the same time, the third connection point 023 can In the form of pillars, it can provide effective support for the middle of the floor 004.

In a further solution of the present invention, the first connection point 019 , the second connection point 021 , the third connection point 023 and the torque box connection point 022 all adopt a bolt connection structure.

In a further solution of the present invention, channels connecting the front and rear ends of the vehicle body are provided in the bracket body profiles on both sides of the battery frame 006, and the channels include the brake pipeline 008 and the air suspension ventilation tube 009, wherein the brake pipeline 008 The air suspension air pipe 009 is located in the bracket body profile on the same side, or in the bracket body profiles on both sides (this solution is not shown).

In this solution, by setting the brake pipeline 008 and the air suspension ventilation pipe 009 in the bracket body of the battery frame 006, it is possible to avoid installing additional pipelines on the vehicle body, thereby simplifying the management of auto parts; Or fix on the battery frame 006, reduce the number of fixing brackets, optimize the layout of the pipeline, make the pipeline layout of the chassis smooth, and reduce the pipeline connection when it is assembled with the upper body 020.

Through the solution provided by this application, the car structure has achieved a high degree of integration and modularization, and the overall design structure of the car has been optimized; the battery cell 001 and high-voltage accessories are integrated into the electric car frame, and the chassis structure has been optimized. More batteries can be arranged in a limited space, and the driving range of the whole vehicle has been extended and improved; the battery frame 006 and the body floor 004 are designed with structural and functional integration, the interior space is increased, the number of parts is reduced, and the development cost of the whole vehicle is reduced. Reduced.

Further, those skilled in the art should understand that if an electric vehicle directly equipped with batteries provided by the embodiment of the present invention is used, all or part of the sub-modules involved will Combination and replacement, such as placing and moving each component; or setting the product it constitutes as a whole; or detachable design; where the combined components can form a device/device/system with specific functions, use such a device/ Devices/systems that replace corresponding components of the present invention also fall within the protection scope of the present invention.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (13)

1. An electric automobile of direct assembly electric core, its characterized in that includes:

the battery module group is used for assembling a lower vehicle body and comprises a battery frame, and a battery core and a high-voltage accessory which are arranged in the battery frame;

the upper vehicle body is mounted on the battery module group;

the torsion box is arranged on the battery module group;

the battery frame comprises an upper vehicle body and a lower vehicle body, wherein the upper vehicle body is provided with a plurality of layers of trapezoidal structures at the joints of the two sides of the battery frame and the upper vehicle body, and each layer of the trapezoidal structures of the upper vehicle body is provided with connecting points which are matched and connected with the upper vehicle body.

2. The electric vehicle with the directly assembled battery cell of claim 1, further comprising: the floor is covered on the battery frame; the battery frame is a square by the concatenation of stake body section bar, the battery frame with the floor encloses and establishes into the battery installation cavity, high-pressure annex with electric core set up in the battery installation cavity, high-pressure annex with electric core electricity is connected, is used for doing electric core charges.

3. The electric vehicle with the directly assembled battery cell as claimed in claim 2, wherein: the bracket body section is provided with a floor connecting point, the floor is connected with the battery frame through the floor connecting point, and the floor connecting point adopts a bolt connecting structure.

4. The electric vehicle with the directly assembled battery cell of claim 2, characterized in that: be fixed with seat installation component through the rubber coating on the floor, seat installation component includes: the battery frame comprises a first cross beam, a second cross beam, a third cross beam and a mounting seat, wherein the two ends of the first cross beam, the two ends of the second cross beam and the two ends of the third cross beam are arranged on the battery frame, the mounting seat is arranged on the first cross beam and the second cross beam, and the first cross beam, the second cross beam and the third cross beam are parallel to each other.

5. The electric vehicle accessory directly assembled with the battery cell of claim 2, characterized in that: the battery module group is characterized in that the front end and the rear end of the battery module group are respectively provided with a wire harness interface, the wire harness interfaces are provided with a power supply interface and a cooling interface, the power supply interface is electrically connected with the battery core and the high-voltage accessory, and the cooling interface is communicated with a cooling structure of the battery module group.

6. The electric vehicle with the directly assembled battery cell as claimed in claim 5, wherein: the cooling structure comprises a cooling water channel arranged in the floor and used for cooling the battery core and the high-voltage accessory; the cooling interface comprises a water inlet and a water outlet which are respectively communicated with two ends of the cooling water channel, and the water inlet and the water outlet are used for entering and exiting heat exchange media.

7. The electric vehicle with the directly assembled battery cell as claimed in any one of claims 2 to 6, wherein: the battery frame with the junction of going up the automobile body is upper and lower two-layer trapezium structure, the battery frame left and right sides respectively is equipped with a set of connection go up the tie point of automobile body, every group the tie point all includes the three first tie point that sets up on the upper strata and sets up five second tie points on the lower floor, first tie point be used for with go up right threshold roof beam or left threshold roof beam connection on the automobile body, the second tie point be used for with threshold inner panel on the last automobile body is connected.

8. The electric vehicle accessory directly assembled with the battery core as recited in claim 7, wherein: the high-voltage accessory comprises an on-board charger, a high-voltage distribution box and a direct-current converter, wherein at least two of the on-board charger, the high-voltage distribution box and the direct-current converter are integrated in one module.

9. The electric vehicle with the directly assembled battery cell as claimed in claim 7, wherein: the torsion box comprises a left front torsion box and a right front torsion box which are arranged at the front end of the battery module group, and a left rear torsion box and a right rear torsion box which are arranged at the rear end of the battery module group.

10. The electric vehicle with the directly assembled battery cell of claim 9, wherein: two sides of the front end and the rear end of the battery module group are respectively provided with two torsion box connection points, and every two torsion box connection points are respectively connected with one of the left front torsion box, the right front torsion box, the left rear torsion box and the right rear torsion box.

11. The electric vehicle with the directly assembled battery cell of claim 10, wherein: the middle part of the battery installation cavity is provided with three third connection points, the third connection points penetrate through the floor, and the third connection points are used for being connected with the upper vehicle body.

12. The electric vehicle with the directly assembled battery cell of claim 11, characterized in that: and the first connecting point, the second connecting point, the third connecting point and the torsion box connecting point are all in bolt connecting structures.

13. The electric vehicle with the directly assembled battery cell as claimed in claim 7, wherein: the support body section bars on two sides of the battery frame are internally provided with channels which are communicated with the front end and the rear end of the vehicle body, each channel comprises a brake pipeline and an air suspension ventilating pipe, and the brake pipelines and the air suspension ventilating pipes are positioned in the support body section bars on the same side or in the support body section bars on two sides respectively.

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