Battery integration device, lower automobile body integration system, automobile and assembly method of automobile

Abstract

The invention provides a battery integration device, a lower automobile body integration system, an automobile and an assembly method of the automobile, and relates to the technical field of new energy automobile lower automobile body assembly technologies, the battery integration device comprises a supporting main body, and the supporting main body is provided with a plurality of first hollowed-out installation areas used for being connected with energy components; the cooling mechanism is mounted at the bottoms of the multiple first hollow mounting areas and supports the energy component; wherein the cooling mechanism comprises a plurality of liquid cooling plates, and the plurality of liquid cooling plates are respectively mounted in the corresponding first hollow mounting areas; the water inlet connector and the water outlet connector are arranged on the supporting main body, and an inlet and outlet flow channel is formed between the water inlet connector and the water outlet connector; the multiple liquid cooling plates communicate with the inlet and outlet flow channels through the connectors correspondingly, the technical problem that in the prior art, after-sale disassembly and assembly of new energy automobiles are difficult is solved, and the technical effects that the lower automobile body battery and the liquid cooling plates are effectively integrated, and installation can be conducted from bottom to top are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile underbody assembly, and in particular to a battery integration device, an underbody integration system, an automobile and an assembly method thereof. Background Art

[0002] With the rapid development of electric vehicle technology, low cost, light weight and high energy density have become the goals pursued by battery systems. As one of the ways to achieve these goals, CTC technology is to integrate the battery pack directly with the lower body or chassis, thereby achieving higher energy density and space utilization, reducing the weight and manufacturing cost of the entire vehicle.

[0003] In the prior art, when assembling the lower body of an electric vehicle, a single battery cell or module is usually installed from the upper part of the lower body to the lower body or chassis, that is, the battery cell or module is installed from top to bottom and integrated with the lower body. At the same time, a liquid cooling plate for cooling is arranged at the bottom of the battery cell inside the battery system, and an inlet and outlet water pipe is provided on the frame beam of the battery system to connect with the inlet and outlet water ports on the liquid cooling plate.

[0004] The above technical solution has the following problems:

[0005] (1) Assembly and after-sales maintenance are difficult. The general CTC solution is to install the single battery cell or module from the upper part of the lower body to the lower body or chassis, that is, to install the battery cell or module from top to bottom and integrate it with the lower body. During after-sales maintenance, it is necessary to operate inside the vehicle and remove the seats, carpets, battery system cover, etc., which is extremely difficult to operate; some CTC solutions install the battery cell module, liquid cooling plate, bottom plate, bottom guard plate, etc. from the bottom of the lower body upward, with a large number of parts and a complicated installation process. The operation is reversed during maintenance, and the process is complicated.

[0006] (2) In the existing CTC battery solution, since the liquid cooling plate is generally arranged at the bottom of the battery cell inside the battery system, and the inlet and outlet water pipes are arranged on the frame beam of the battery system, liquid cooling pipes need to be arranged inside the battery system layout space to connect the inlet and outlet water pipes on the frame beam with the inlet and outlet water ports on the liquid cooling plate. On the one hand, the liquid cooling pipe requires layout space, and the installation of the liquid cooling pipe requires operation space, which occupies the space available for the arrangement of the battery cells inside the battery system, limiting the improvement of the energy density of the battery system. Summary of the invention

[0007] The purpose of the embodiments of the present application is to provide a battery integration device, a lower body integration system, a new energy vehicle and an assembly method thereof, so as to solve the technical problems existing in the prior art that the top-down installation method is not conducive to after-sales maintenance and disassembly, and at the same time, accessories such as the inlet and outlet pipes of the liquid cooling plate occupy too much space, affecting the overall density of the battery system.

[0008] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0009] In a first aspect, the present application provides a battery integration device, the device comprising:

[0010] A support body, the support body is provided with a plurality of first hollow installation areas for connecting energy components;

[0011] A cooling mechanism is installed at the bottom of the plurality of first hollow installation areas and supports the energy components.

[0012] In some modified implementations of the first aspect of the present application, the cooling mechanism includes:

[0013] A plurality of liquid cooling plates, wherein the plurality of liquid cooling plates are respectively installed in corresponding first hollow installation areas;

[0014] A water inlet interface and a water outlet interface, the water inlet interface and the water outlet interface are arranged on the supporting body, and an inlet and outlet flow channel is formed between the water inlet interface and the water outlet interface;

[0015] The plurality of liquid cooling plates are respectively connected to the inlet and outlet flow channels through joints.

[0016] In some modified implementations of the first aspect of the present application, the support body further comprises a second hollow installation area for connecting the electric control component; the electric control component is electrically connected to the energy component;

[0017] The second hollow installation area is arranged at one end of the supporting body.

[0018] In some modified implementations of the first aspect of the present application, the support body further includes at least a first crossbeam and a second crossbeam, the first crossbeam is arranged between the plurality of first hollow installation areas, and the second crossbeam is arranged between the first hollow installation area and the second hollow installation area;

[0019] The second crossbeam and the first crossbeam are both provided with notches, and the wiring harness plug of the energy component passes through the notches and is electrically connected to the electric control component in the second hollow installation area.

[0020] In some modified implementations of the first aspect of the present application, the liquid cooling plate is provided with a connecting block, the supporting body is provided with a first connecting hole adapted to the connecting block, and the first connecting hole is detachably connected to the connecting hole;

[0021] The supporting body is also provided with a second connecting hole, and the second connecting hole is connected between the inlet and outlet flow channels and the corresponding liquid cooling plate.

[0022] In some modified implementations of the first aspect of the present application, the support body also includes a maintenance base plate adapted to the second hollow installation area, and the maintenance base plate is detachably connected to the second hollow installation area.

[0023] A second aspect of the present application provides a lower body integration system, which includes the above-mentioned battery integration device and a lower body assembly, and the battery integration device can be detachably installed on the lower body assembly from bottom to top.

[0024] In some modified implementations of the second aspect of the present application, a first sealing member is provided between the support body and the lower vehicle body assembly, and the first sealing member is provided with evenly distributed threaded connection holes.

[0025] In some modified implementations of the second aspect of the present application, a plurality of bosses are provided at the end where the support body is connected to the lower vehicle body assembly, and the bosses are provided with internal threaded holes;

[0026] The lower body assembly is provided with positioning holes corresponding to the plurality of bosses, and the lower body assembly is threadedly connected with the internal threaded holes of the bosses through a first fastener.

[0027] In some modified implementations of the second aspect of the present application, the lower vehicle body assembly is a connection body with an open structure at the bottom, and the connection body includes a floor mounting portion, a battery connection portion, and a protection portion;

[0028] The mounting portion is disposed on the top of the connecting body, and the mounting portion is used to mount the vehicle body bottom plate;

[0029] The battery connecting portion is provided with a threaded through hole, and the battery integrated device is detachably connected to the connecting portion via a second fastener;

[0030] The protection part extends toward the peripheral side of the battery integrated device and is used to prevent external debris from hitting the battery integrated device.

[0031] In a third aspect, the present invention further provides a new energy vehicle, comprising the above-mentioned lower body integrated system.

[0032] In a fourth aspect, the present invention further provides an assembly method for assembling the above lower vehicle body integrated system, the steps of which are:

[0033] S10. The lower body assembly and the battery integrated device are configured separately;

[0034] S20. Place the first seal on the upper end surface of the flange of the support body, and connect the battery integration device to the bottom of the lower body assembly from bottom to top through the first fastener and the second fastener; realize the connection between the battery integration device and the lower body assembly;

[0035] S30. Install the electric control component through the second hollow installation area. After the electric control component is connected to the wiring harness plug, the second hollow installation area is closed by the maintenance bottom plate.

[0036] Compared with the prior art, on the first hand, the battery integration device provided in the present application has a dominant technical path of integrating energy components and a cooling mechanism composed of multiple liquid cooling plates on a supporting body, which not only meets the basis for the overall installation of the energy components and the cooling mechanism from bottom to top, but also reduces the difficulty of later after-sales maintenance and disassembly. At the same time, the water inlet interface and the water outlet interface in the cooling mechanism are directly arranged on the supporting body, and an inlet and outlet channel is formed between the water inlet interface and the water outlet interface. When installing the liquid cooling plate, the integration and fixation with the supporting body can be completed by directly inserting the connector into the corresponding interface. At the same time, the liquid cooling plate is arranged at the bottom of the first hollow installation area for installing the energy component, and can also play the role of supporting the energy component without conflicting with the space occupied by the energy component. It solves the technical problem in the prior art that the inlet and outlet pipes and other accessories of the liquid cooling plate occupy too much space, affecting the overall density of the battery system, and achieves the technical effect of effectively utilizing the installation space and improving the overall density of the battery system.

[0037] In addition, the prior art has many connecting joints between the liquid cooling pipes and the inlet and outlet water pipes on the front / rear beams and the inlet and outlet water ports on the liquid cooling plate, and the sealing reliability is low. The setting of the integrated structure in the present invention also greatly improves the sealing effect and achieves unexpected technical effects.

[0038] Secondly, the present invention provides a lower vehicle body integration system. Since the battery integration device is an integrated structure in which the cooling mechanism and energy components are installed as a whole on the supporting body, it can be installed from bottom to top. When the staff performs subsequent maintenance, they do not need to remove components such as the vehicle floor, but can directly complete the disassembly of the battery integration device from the bottom of the vehicle, saving a lot of work time.

[0039] In the third aspect, the present invention provides a new energy vehicle. Since the new energy vehicle adopts the lower body integration system described above, it can achieve the technical effect of improving work efficiency and reducing labor costs regardless of new car assembly, later maintenance, or component replacement.

[0040] In a fourth aspect, the present invention provides an installation method for the off-board integrated system, the steps and principles of which have been described above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0042] Figure 1 The external structure diagram of the battery integration device is schematically shown;

[0043] Figure 2 The exploded structure diagram of the battery integrated device is schematically shown;

[0044] Figure 3 Schematically shows a top view of a support body in a battery integration device;

[0045] Figure 4 The schematic diagram of the connection structure between the liquid cooling plate and the supporting body in the battery integration device is schematically shown;

[0046] Figure 5 The exploded structural diagram of the lower vehicle body integrated system is schematically shown;

[0047] Figure 6 The schematic diagram of the assembly of the lower vehicle body integrated system and the battery integrated device is shown schematically;

[0048] Figure 7 A flow chart of an assembly method of a lower vehicle body integration system is schematically shown.

[0049] Explanation of the accompanying drawings: 10-energy component; 20-electronic control component; 30-first sealing member; 40-first fastener; 50-second fastener; 100-support body; 110-first hollow installation area; 120-second hollow installation area; 121-maintenance base plate; 122-second sealing member; 130-first crossbeam; 140-second crossbeam; 150-notch; 160-boss; 200-cooling mechanism; 210-liquid cooling plate; 211-joint; 220-water inlet interface; 230-inlet and outlet flow channels; 300-lower body assembly; 310-floor mounting portion; 320-battery connecting portion; 330-protective portion. DETAILED DESCRIPTION

[0050] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0051] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0052] The technical route of the present invention is as follows:

[0053] Firstly, the present invention provides a plurality of first hollow installation areas 110 on the support body 100, and the first hollow installation area 110 can be used to install a plurality of energy components 10, and the first hollow installation area 110 is formed into a closed structure by providing a plurality of liquid cooling plates 210 at the bottom of the first hollow installation area 110, thereby further realizing the fixation and integration of the energy components 10 relative to the support body 100; at the same time, in order to reduce the space occupied by the connecting components of the liquid cooling plate 210, by providing a water inlet interface 220 and a water outlet interface on the support body 100, and a water flow channel passing therebetween, the liquid cooling plate 210 is directly connected to the inlet and outlet flow channel 230 through the interface during the installation process, that is, only by improving the structure of the liquid cooling plate 210 relative to the support body 100, the effective connection between the two can be realized, and the need for internal liquid circulation can still be realized under the premise of removing the connecting components such as the connecting pipe; thirdly, since a large number of connecting components are reduced, the connection of the support body 100 relative to the lower body assembly 300 is also simpler, which is convenient for improving the sealing effect.

[0054] Secondly, in order to further facilitate the after-sales maintenance of the car by the staff, the support body 100 is also provided with a second hollow installation area 120 on one side of the area where the energy component 10 is placed, and this area is used to connect the relevant electronic control components 20. The energy component 10 and each electronic control component 20 are connected through the notch 150 set by the second cross beam 140 and the first cross beam 130, so as to provide energy supply to each electronic control component 20, thereby alleviating the technical problems of complicated lines and high workload of after-sales personnel in the prior art.

[0055] Thirdly, the present invention further provides a connection method between the battery integrated device and the lower body assembly 300, that is, a plurality of bosses 160 are provided at the end where the support body 100 is connected to the lower body assembly 300, and the bosses 160 are provided with internal threaded holes; the lower body assembly 300 is provided with positioning holes corresponding to the plurality of bosses 160, and the lower body assembly 300 is threadedly connected to the internal threaded holes of the bosses 160 through the first fasteners 40. The setting of the bosses 160 and the positioning holes can not only provide an effective connection, but also play a role in positioning during the installation process. At the same time, the bottom of the lower body is also provided with corresponding installation parts 310, battery connection parts 320 and protective parts 330, so as to effectively protect the battery integrated device under the premise of rationally utilizing the space of the lower body assembly 300.

[0056] Finally, the present invention provides an assembly method, which further explains the technical solution described above from the perspective of the assembly method.

[0057] Embodiment 1

[0058] Reference Figure 1 and attached Figure 2According to a first aspect of an embodiment of the present invention, a battery integration device is provided, the device comprising:

[0059] A support body 100, the support body 100 is provided with a plurality of first hollow installation areas 110 for connecting the energy components 10;

[0060] The cooling mechanism 200 is installed at the bottom of the plurality of first hollow installation areas 110 and supports the energy component 10 .

[0061] Wherein: the cooling mechanism 200 comprises:

[0062] A plurality of liquid cooling plates 210, wherein the plurality of liquid cooling plates 210 are respectively installed in corresponding first hollow installation areas 110;

[0063] A water inlet interface 220 and a water outlet interface, the water inlet interface 220 and the water outlet interface are arranged on the supporting body 100, and an inlet and outlet flow channel 230 is formed between the water inlet interface 220 and the water outlet interface;

[0064] The plurality of liquid cooling plates 210 are respectively connected to the inlet and outlet channels 230 via the joints 211 .

[0065] It not only meets the basis for the overall installation of the energy component 10 and the cooling mechanism 200 from bottom to top, but also reduces the difficulty of later after-sales maintenance and disassembly. At the same time, the water inlet interface 220 and the water outlet interface in the cooling mechanism 200 are directly arranged on the supporting body 100, and an inlet and outlet channel is formed between the water inlet interface 220 and the water outlet interface. When installing the liquid cooling plate 210, it can be directly inserted into the corresponding interface through the joint 211 to complete the integration and fixation with the supporting body 100. At the same time, the liquid cooling plate 210 is arranged at the bottom of the first hollow installation area 110 for installing the energy component 10, and can also play the role of supporting the energy component 10 without conflicting with the space occupied by the energy component 10. It solves the technical problem in the prior art that the inlet and outlet pipes and other accessories of the liquid cooling plate 210 occupy too much space, affecting the overall density of the battery system, and achieves the technical effect of effectively utilizing the installation space.

[0066] Specifically, the liquid cooling plate 210 can be connected to the side wall of the support body 100 by means of threaded connection, plug-in connection, etc., so as to achieve the closure of the bottom of the first hollow installation area 110. It is only necessary to seal the connection between the liquid cooling plate 210 and the support body 100. The specific sealing can be performed by a sealing ring, sealant, or direct welding.

[0067] For further information, see Attachment Figure 1-3 In a specific implementation, the support body 100 further includes a second hollow installation area 120 for connecting the electric control component 20; the electric control component 20 is electrically connected to the energy component 10;

[0068] The second hollow installation area 120 is disposed at one end of the support body 100 .

[0069] Specifically, the energy component 10 requires the electric control component 20 to control the new energy vehicle to realize various functions. In order to facilitate the installation and subsequent maintenance of the electric control component 20, the technical solution adopted by the present invention further subdivides the various areas of the support body 100, wherein the first hollow installation area 110 is used to place the energy component 10, and the second hollow installation area 120 is used to set the electric control component 20, and the specific method is as follows:

[0070] For further information, see Attachment Figure 1 In a specific implementation, the support body 100 further includes at least a first crossbeam 130 and a second crossbeam 140, the first crossbeam 130 is disposed between the plurality of first hollow installation areas 110, and the second crossbeam 140 is disposed between the first hollow installation area 110 and the second hollow installation area 120;

[0071] The second cross beam 140 and the first cross beam 130 are both provided with a notch 150 , and the wiring harness plug of the energy component 10 passes through the notch 150 and is electrically connected to the electric control component 20 in the second hollow installation area 120 .

[0072] In the technical solution adopted by the invention, the area division is achieved by the first crossbeam 130 and the second crossbeam 140, and both the second crossbeam 140 and the first crossbeam 130 are provided with a notch 150 for the passage of connecting lines such as wiring harnesses.

[0073] For further information, see Attachment Figure 4 In a specific implementation, the liquid cooling plate 210 is provided with a connection block, and the supporting body 100 is provided with a first connection hole adapted to the connection block, and the first connection hole is detachably connected to the connection hole;

[0074] The support body 100 is further provided with a second connection hole, which is connected between the inlet and outlet flow channel 230 and the corresponding liquid cooling plate 210 .

[0075] Specifically, in order to achieve effective connection between the liquid cooling plate 210 and the support body 100 while the connecting pipeline does not occupy any space required by the energy component 10, in the technical solution adopted by the present invention, the portion where the support body 100 is connected to the liquid cooling plate 210 is in a stepped shape, and one side of the liquid cooling plate 210 is fixed as a whole by a connecting block and a first connecting hole. At the same time, an inlet and outlet flow channel 230 is provided in the support body 100, and a second connecting hole is provided at the end of the inlet and outlet flow channel 230 facing the joint 211 of the liquid cooling plate 210. The joint 211 of the liquid cooling plate 210 is directly inserted into the support body 100 through the second connecting hole and communicated with the inlet and outlet flow channel 230. The inlet and outlet flow channel 230 is also provided with a water inlet interface 220 and a water outlet interface along the support body 100, thereby realizing the circulation inside the liquid cooling plate 210. It can be seen that the structure does not occupy the space of any energy component 10. At the same time, it is only necessary to ensure the sealing between the joint 211 and the inlet and outlet flow channel 230 to meet the sealing requirements. In the prior art, not only the space occupied by the connecting pipes needs to be considered, but also due to the existence of these connecting pipes, the sealing structure is also very complicated. Therefore, through the implementation of the above structure, on the basis of saving the space occupied by the connecting components of the liquid cooling plate 210, an unexpected technical effect of improving the sealing is achieved.

[0076] For further information, see Attachment Figure 1 and attached Figure 3 In a specific implementation, the support body 100 also includes a maintenance base plate 121 adapted to the second hollow installation area 120 , and the maintenance base plate 121 is detachably connected to the second hollow installation area 120 .

[0077] Specifically, in order to achieve the spatial sealing requirements of the electronic control components 20 located in the second hollow installation area 120, in the technical solution adopted by the present invention, a maintenance base plate 121 is set in the second hollow installation area 120, and the maintenance base plate 121 is connected to the support body 100 through a second sealing member 122 and related bolts, so that the second hollow installation area 120 is sealed, which is convenient for later maintenance by after-sales personnel.

[0078] It should be noted that, in the actual situation of new energy vehicles, the height of the vehicle floor is lower than that of the liquid cooling plate 210 to prevent the liquid cooling plate 210 from colliding with debris on the ground due to the chassis being too low.

[0079] Second, as Figure 5 As shown, this embodiment further provides a lower body integration system, including the battery integration device provided above and the lower body assembly 300, wherein the battery integration device is detachably mounted on the lower body assembly 300 from bottom to top.

[0080] Since the battery integrated device is an integrated structure in which the cooling mechanism 200 and the energy component 10 are integrally installed on the supporting body 100, it can be installed from bottom to top. When the staff performs subsequent maintenance, they do not need to remove components such as the vehicle floor, and can directly complete the disassembly of the battery integrated device from the bottom of the vehicle, saving a lot of work time.

[0081] For further information, see Attachment Figure 6 In a specific implementation, a first sealing member 30 is provided between the supporting body 100 and the lower vehicle body assembly 300, and the first sealing member 30 is provided with evenly distributed threaded connection holes.

[0082] Specifically, in order to achieve effective connection and sealing requirements between the battery integrated device and the lower body assembly 300, in the technical solution adopted by the present invention, a first seal 30 is provided between the support body 100 and the lower body assembly 300, and the first seal 30 is provided with evenly distributed threaded connection holes. The first sealing ring can be arranged in a sealing ring structure, and is tightened and fixed by fixing parts such as bolts.

[0083] For further information, see Attachment Figure 1 In a specific implementation, the end portion of the support body 100 connected to the lower vehicle body assembly 300 is provided with a plurality of bosses 160, and the bosses 160 are provided with internal threaded holes;

[0084] The lower body assembly 300 is provided with positioning holes corresponding to the plurality of bosses 160 , and the lower body assembly 300 is threadedly connected to the internal threaded holes of the bosses 160 via the first fastener 40 .

[0085] Specifically, in order to simplify the installation difficulty between the support body and the first vehicle body assembly during the assembly process, the technical solution adopted by the present invention, through the cooperation of the boss 160 set on the support body 100 and the first fastener 40, can not only achieve effective fixation and connection of the middle part of the first hollow installation area 110, but also play a positioning role in the assembly process.

[0086] For further information, see Attachment Figure 6 In a specific implementation, the lower body assembly 300 is a connection body with an open structure at the bottom, and the connection body includes a floor mounting portion 310, a battery connecting portion 320 and a protective portion 330;

[0087] The mounting portion 310 is disposed on the top of the connecting body, and the mounting portion 310 is used to mount the vehicle body bottom plate;

[0088] The battery connection portion 320 is provided with a threaded through hole, and the battery integrated device is detachably connected to the connection portion via a second fastener 50;

[0089] The protection portion 330 extends toward the periphery of the battery integrated device and is used to prevent external debris from hitting the battery integrated device.

[0090] In this embodiment, the lower body assembly 300 is a frame-type cavity structure that is closed on all sides and the upper part and open on the lower part. The structure mainly includes a seat crossbeam, a vehicle body floor, and a plurality of longitudinal beams, including a first crossbeam 130 and a second crossbeam 140. The main body of the frame-type structure is formed by welding two longitudinal beams and a middle crossbeam. The frame-type cavity structure is divided into two areas, a first hollow installation area 110 and a second hollow installation area 120, by the arrangement of the first crossbeam 130 and the second crossbeam 140, which correspond to the battery pack arrangement area and the accessory arrangement area respectively. The lower end surfaces of the two longitudinal beams, the two crossbeams and the middle crossbeam are flush, and the lower end surfaces of the two longitudinal beams and the two crossbeams serve as the installation and sealing surfaces of the shell and the battery pack assembly. The seat crossbeam is arranged on the upper part of the vehicle body floor, and is rigidly connected to the upper surface of the vehicle body floor and the two longitudinal beams in the frame-type structure.

[0091] The two side longitudinal beams are provided with a mounting portion 310 of the vehicle body floor, a battery connection portion 320 connected to the battery, and a protection portion 330 for shell protection. The vehicle body floor mounting cavity is located at the upper end of the side longitudinal beam, and the upper end surface of the vehicle body floor mounting cavity is used for the installation and sealing of the vehicle body floor; the battery connection portion 320 is located at the lower end of the side longitudinal beam, and the lower end surface of the battery connection portion 320 is used for the installation and sealing of the battery integrated device; the protection portion 330 is located on the outer side of the side longitudinal beam, and the lower end surface of the protection portion 330 exceeds the end surface of the fastener head, so as to protect the sealing surface of the support body 100 in case of side collision or stone impact.

[0092] In summary, refer to the attached Figure 7 The assembly method of the lower vehicle body integrated system is as follows:

[0093] S10. The lower body assembly 300 and the battery integrated device are configured separately;

[0094] S20. The first seal 30 is placed on the upper end surface of the flange of the support body 100, and the battery integrated device is connected to the bottom of the lower body assembly 300 from bottom to top through the first fastener 40 and the second fastener 50; the connection between the battery integrated device and the lower body assembly 300 is achieved;

[0095] S30 . Install the electric control component 20 through the second hollow installation area 120 . After the electric control component 20 is connected to the wiring harness plug, the second hollow installation area 120 is closed through the maintenance base plate 121 .

[0096] The assembly process of each step is as follows:

[0097] In step S10, the lower body assembly 300 and the battery integrated device need to be configured separately, wherein:

[0098] The lower body assembly 300 is configured such that the body bottom plate and the frame form a cavity structure with the periphery and the upper end closed and the lower end open;

[0099] When configuring the battery integration device, the following steps are included:

[0100] S11. The energy component 10 is mounted on the support body 100;

[0101] S12. Install the electrical connector and high and low voltage sampling harness of the energy component 10, which is conducted to the second hollow installation area 120 through the notch 150;

[0102] S13. Install the liquid cooling plate 210.

[0103] In step S20, the following steps are included:

[0104] The battery integration device is matched with the lower vehicle body assembly 300 from bottom to top, and the battery integration device is firmly connected to the lower assembly shell through the first fastener 40, the second fastener 50 and the first seal 30.

[0105] In step S30, the following steps are included:

[0106] S31. Install the BDU and BMS master and slave boards from bottom to top in the second hollow installation area 120;

[0107] S32. Complete the connection between each wiring harness in the energy component 10 and the electronic control components 20 such as BDU and BMS.

[0108] S33. Install and maintain the base plate 121.

[0109] Finally, this embodiment provides a new energy vehicle, the bottom of which adopts the lower body integration system described above. From the above description, it can be seen that both the overall assembly efficiency of the vehicle and the convenience of subsequent maintenance have made great progress compared with the existing technology.

[0110] It should be supplemented that, at present, the lower body structure of new energy vehicles includes the front lower body, the middle lower body and the rear lower body. The lower body integration system provided in this embodiment is arranged in the middle lower body. With the continuous development of the overall structure of new energy vehicles, the battery integration device provided in this embodiment can also be installed in the front or rear body according to the assembly method in this embodiment. Moreover, since the battery is installed from bottom to top in this embodiment, it also provides another option for the subsequent operation mode of new energy electric vehicles, that is, users can use shared batteries for energy replenishment, that is, when the battery power is low, there is no need to charge through a charging pile, and the battery can be directly replaced, which further changes the mode of existing new energy electric vehicles and solves the problems of long charging time and low charging efficiency in cold weather.

[0111] It should be noted that in the description of this specification, the terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "connect", "install", "fixed", etc. should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0112] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0113] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A battery integration device, characterized in that: include: A support body (100), wherein the support body (100) is provided with a plurality of first hollow installation areas (110) for connecting energy components (10); A cooling mechanism (200), the cooling mechanism (200) being installed at the bottom of the plurality of the first hollow installation areas (110) and supporting the energy component (10); Wherein: the cooling mechanism (200) comprises: A plurality of liquid cooling plates (210), wherein the plurality of liquid cooling plates (210) are respectively installed in corresponding first hollow installation areas (110); A water inlet interface (220) and a water outlet interface, wherein the water inlet interface (220) and the water outlet interface are arranged on the supporting body (100), and an inlet and outlet flow channel (230) is formed between the water inlet interface (220) and the water outlet interface; The plurality of liquid cooling plates (210) are respectively connected to the inlet and outlet flow channels (230) via joints (211).

2. The battery integration device according to claim 1, characterized in that: The support body (100) further comprises a second hollow installation area (120) for connecting an electric control component (20); the electric control component (20) is electrically connected to the energy component (10); The second hollow installation area (120) is arranged at one end of the supporting body (100).

3. The battery integration device according to claim 2, characterized in that: The support body (100) further comprises at least a first crossbeam (130) and a second crossbeam (140), wherein the first crossbeam (130) is arranged between the plurality of the first hollow installation areas (110), and the second crossbeam (140) is arranged between the first hollow installation area (110) and the second hollow installation area (120); The second crossbeam (140) and the first crossbeam (130) are both provided with a notch (150), and the wiring harness plug of the energy component (10) passes through the notch (150) and is electrically connected to the electric control component (20) in the second hollow installation area (120).

4. The battery integration device according to claim 1, characterized in that: The liquid cooling plate (210) is provided with a connection block, and the supporting body (100) is provided with a first connection hole adapted to the connection block, and the first connection hole is detachably connected to the connection hole; The supporting body (100) is further provided with a second connecting hole, wherein the second connecting hole is connected between the inlet and outlet flow channel (230) and the corresponding liquid cooling plate (210).

5. The battery integration device according to claim 3, characterized in that: The supporting body (100) further comprises a maintenance base plate (121) adapted to the second hollow installation area (120), and the maintenance base plate (121) is detachably connected to the second hollow installation area (120).

6. A lower vehicle body integrated system, characterized in that: It comprises the battery integration device and the lower body assembly (300) as described in any one of claims 1 to 5, wherein the battery integration device can be detachably installed on the lower body assembly (300) from bottom to top.

7. The lower vehicle body integrated system according to claim 6, characterized in that: A first sealing member (30) is provided between the supporting body (100) and the lower vehicle body assembly (300), and the first sealing member (30) is provided with evenly distributed threaded connection holes.

8. The lower vehicle body integrated system according to claim 6, characterized in that: The end portion of the support body (100) connected to the lower vehicle body assembly (300) is provided with a plurality of bosses (160), and the bosses (160) are provided with internal threaded holes; The lower body assembly (300) is provided with positioning holes corresponding to the plurality of bosses (160), and the lower body assembly (300) is threadedly connected to the internal threaded holes of the bosses (160) via a first fastener (40).

9. The lower vehicle body integrated system according to claim 6, characterized in that: The lower vehicle body assembly (300) is a connection body with an open bottom structure, and the connection body includes a floor mounting portion (310), a battery connection portion (320) and a protection portion (330); The floor mounting portion (310) is arranged on the top of the connecting body, and the floor mounting portion (310) is used to mount the vehicle body floor; The battery connecting portion (320) is provided with a threaded through hole, and the battery integrated device is detachably connected to the connecting portion via a second fastener (50); The protection portion (330) extends toward the periphery of the battery integrated device and is used to prevent external debris from impacting the battery integrated device.

10. An automobile, characterized in that: Comprising the lower vehicle body integration system as described in any one of claims 6-9.

11. An assembly method for installing the lower vehicle body integration system according to any one of claims 6 to 9, characterized in that the steps are: S10. The lower body assembly (300) and the battery integrated device are respectively configured; S20. Place the first seal (30) on the upper end surface of the flange of the support body (100), and connect the battery integrated device to the bottom of the lower body assembly (300) from bottom to top through the first fastener (40) and the second fastener (50); realize the connection between the battery integrated device and the lower body assembly (300); S30. Install the electric control component (20) through the second hollow installation area (120). After the electric control component (20) is connected to the wiring harness plug, the second hollow installation area (120) is closed through the maintenance base plate (121).

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