Integrated structure of transmission case and automobile

Abstract

The present invention relates to an integrated structure of a transmission case and an automobile. The integrated structure of the transmission case comprises a transmission case body, wherein a copper busbar connector is integrated on the right case of the transmission case body, wherein one end of the copper busbar connector outside the right case is connected to a low-voltage controller, and one end inside the right case is connected to a motor copper busbar, wherein the low-voltage controller is integratedly mounted on the right case. The present invention also provides an electric vehicle, comprising the integrated structure of the transmission case. The present invention solves the problem that the installation of the controller of the existing low-voltage hybrid transmission occupies a large space, resulting in difficulty in arranging peripheral components, and can also solve the problem that the TCU cannot be integrated into the transmission, as well as the problem of high production cost.

Description

Technical Field

[0001] The invention relates to the technical field of automobile transmissions, and in particular to an integrated structure of a transmission case and an automobile. Background Art

[0002] A hybrid vehicle is a vehicle whose driving system is composed of two or more single driving systems that can operate simultaneously. The driving power of the vehicle is provided by each driving system individually or together according to the actual driving state of the vehicle. The hybrid vehicle usually refers to a gasoline-electric hybrid vehicle.

[0003] In the prior art, high-voltage hybrid transmissions are difficult to arrange in the vehicle due to their large size and heavy weight, and also have the defect of high production cost. Therefore, low-voltage hybrid transmissions are born. However, the controller of a low-voltage hybrid transmission is generally installed on the side or directly above the transmission, which causes the space size of the transmission to be too large, making it difficult to arrange the surrounding components, and the TCU is not integrated on the transmission, so that the TCU software system cannot correspond one-to-one with the control hardware system such as the transmission hydraulic shift. Summary of the invention

[0004] The purpose of the present invention is to provide an integrated structure of a transmission case and a vehicle to solve the problem that the installation of the controller of the existing low-voltage hybrid transmission takes up a large space, resulting in difficulty in arranging peripheral components. It can also solve the problem that the TCU cannot be integrated into the transmission and the problem of high production cost.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] An integrated structure of a transmission case includes a transmission case body, wherein a copper busbar connector is integrated on the right case body of the transmission case body, wherein one end of the copper busbar connector outside the right case body is connected to a low-voltage controller, and one end inside the right case body is connected to a motor copper busbar, and the low-voltage controller is integratedly mounted on the right case body.

[0007] Preferably, an oil baffle structure and an oil collecting structure are provided in the right housing, and the oil baffle structure, the copper busbar connector and the motor copper busbar cooperate to baffle the oil, so that the splashed lubricating oil flows into the oil collecting structure, and then flows into the differential bearing from the lubricating oil hole at the bottom of the oil collecting structure to lubricate the differential bearing.

[0008] Preferably, a mounting interface for mounting the copper busbar connector is provided on the right box body, and a sealing ring is provided between the mounting interface and the copper busbar connector, and between the outer end surface of the mounting interface and the low-voltage controller.

[0009] Preferably, the oil blocking structure comprises an oil blocking rib plate extending from the inner side of the mounting interface toward the outer wall of the motor mounting hole and the outer wall of the motor mounting hole, wherein the higher side of the outer wall of the motor mounting hole is connected to the oil blocking rib plate, and the lower side is connected to the oil collecting structure;

[0010] The motor copper bar is formed with a first oil blocking structure, a second oil blocking structure and an oil collecting tank, and the oil collecting tank is located above the oil collecting structure;

[0011] The lubricating oil splashed by the differential is divided into two paths through the first oil baffle structure and flows into the oil collecting structure. One path is blocked by the copper busbar connector, the oil baffle rib plate and the outer wall of the motor mounting hole and flows into the oil collecting structure. The other path is blocked by the first oil baffle structure and flows into the oil collecting tank, and then flows into the oil collecting structure from the oil hole at the bottom of the oil collecting tank.

[0012] The lubricating oil splashed by the clutch is blocked by the second oil blocking structure, flows into the oil collecting groove, and then flows into the oil collecting structure from the oil holes at the bottom of the oil collecting groove.

[0013] Preferably, the first oil blocking structure includes a first side wall formed on a side close to the mounting interface, a second side wall formed on a side close to the oil blocking rib plate, and a third side wall formed on a side close to the outer wall of the motor mounting hole, and the first side wall, the second side wall and the third side wall are connected end to end;

[0014] The second oil-blocking structure is a fourth side wall formed by the motor copper bar on a side opposite to the outlet of the lubricating oil splashed by the clutch, and the fourth side wall extends to the oil collecting tank.

[0015] Preferably, the copper busbar connector is directly connected to the copper busbar of the low-voltage controller at one end outside the right box, and is directly connected to the motor copper busbar at one end inside the right box;

[0016] The low voltage controller is located at the original placement position of the high voltage wire box on the right box.

[0017] Preferably, at least two positioning pin holes are provided on the right box body on the outer side of the mounting interface for positioning the low-voltage controller.

[0018] Preferably, the right box body is provided with at most two first bolt mounting holes on the outer side of the mounting interface;

[0019] The low-pressure controller is positioned by a hollow pin and a positioning pin hole, the inner hole of the hollow pin has the same diameter as the bolt mounting hole, and the positioning pin hole is provided with an inner thread that is the same as the first bolt mounting hole at a position close to the bottom of the hole, so that the bolt passes through the hollow pin and cooperates with the positioning pin hole to fix the low-pressure controller;

[0020] The right box body is provided with a second bolt mounting hole on the inner side of the mounting interface for mounting the motor copper busbar.

[0021] Preferably, the oil baffle plate, the outer wall of the motor mounting hole and the oil collecting structure are integrally formed with the right box body;

[0022] The surface of the motor copper bar is wrapped by injection molding of insulating material.

[0023] The present invention also provides an automobile, comprising the integrated structure of the transmission case of the present invention.

[0024] Beneficial effects of the present invention:

[0025] 1) By integrating a copper busbar connector on the right case of the transmission case, and connecting the low-voltage controller at one end of the copper busbar connector outside the right case, and connecting the motor copper busbar at one end inside the right case, and integrating the low-voltage controller on the right case, the integrated installation of the low-voltage controller is realized, making the whole system miniaturized and easy to arrange, and retaining the original TCU position, the one-to-one correspondence between the TCU software system and the control hardware system such as the transmission hydraulic control is realized;

[0026] 2) By setting an oil baffle structure and an oil collecting structure in the right box body, and combining the oil baffle structure, the copper bar connector and the motor copper bar to block the oil, the lubricating oil splashed from the differential and the clutch is collected in the oil collecting structure, and then flows into the differential bearing from the lubricating oil hole at the bottom of the oil collecting structure to lubricate the differential bearing, effectively realizing the collection of splashing lubricating oil and efficient lubrication of the bearing;

[0027] 3) By setting sealing rings between the installation interface and the copper busbar connector, and between the outer end surface of the installation interface and the low-pressure controller, the sealing performance of the copper busbar connector and the controller installation is guaranteed, and the transmission oil and external water vapor are prevented from flowing into the controller cavity, damaging the electronic components or causing a short circuit;

[0028] 4) By directly connecting the copper busbar of the low-voltage controller and the copper busbar of the motor to the two ends of the copper busbar connector, not only the reliability of the connection is improved, but also the connection harness is reduced, and the production cost is reduced; at the same time, the placement position of the low-voltage controller is made the placement position of the original high-voltage wire box, that is, the low-voltage controller occupies the neutral position of the original high-voltage cavity, thereby realizing the integrated installation of the low-voltage controller without occupying the space position of the transmission and the position of the surrounding components, making the overall miniaturization and easy layout advantages;

[0029] 5) By using a hollow pin for positioning, and making the inner hole of the hollow pin the same as the hole diameter of the first bolt mounting hole, and at the same time setting an internal thread the same as the first bolt mounting hole near the bottom of the positioning pin hole, the bolt can pass through the hollow pin and cooperate with the positioning pin hole to fix the low-voltage controller, so that the positioning pin hole can be used together with the first bolt mounting hole to install the low-voltage controller, thereby reducing the bolt mounting holes set on the box body and saving installation space; at the same time, by setting the second bolt mounting hole for fixing the low-voltage controller and the motor copper busbar on the right box body at the same time, the vibration difference caused by setting the bolt mounting holes on different boxes is avoided, and it has promotion and application value in the field of automobile transmission technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure for installing a high-voltage wire box on the right case of a high-voltage hybrid transmission;

[0031] Figure 2 It is a structural schematic diagram of the present invention;

[0032] Figure 3 This is a partial exploded view of the right box and controller;

[0033] Figure 4 It is a partial view of the interior of the right box;

[0034] Figure 5 This is a schematic diagram of the structure of the motor copper busbar;

[0035] Figure 6 It is a partial view of the exterior of the right box;

[0036] Figure 7 This is a schematic diagram of the structure of the controller and motor copper busbars assembled with the right box.

[0037] Among them, 101-high-voltage wire box; 1-right box body; 2-copper busbar connector; 3-low-voltage controller; 4-motor copper busbar; 5-oil collecting structure; 6-lubricating oil hole; 7-installation interface; 8-outer end face; 9-outer wall of motor mounting hole; 10-oil baffle rib plate; 11-first oil baffle structure; 12-second oil baffle structure; 13-oil collecting trough; 14-first side wall; 15-second side wall; 16-third side wall; 17-positioning pin hole; 18-first bolt mounting hole; 19-hollow pin; 20-second bolt mounting hole; 21-controller end cover. DETAILED DESCRIPTION

[0038] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0039] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0040] Figures 2 to 7 As shown, an integrated structure of a transmission case includes a transmission case body, a copper busbar connector 2 is integrated on the right case body 1 of the transmission case body, the copper busbar connector 2 is connected to a low-voltage controller 3 at one end outside the right case body 1, and is connected to a motor copper busbar 4 at one end inside the right case body 1, and the low-voltage controller 3 is integrated and installed on the right case body 1.

[0041] By integrating a copper busbar connector on the right case of the transmission case, connecting the low-voltage controller at one end of the copper busbar connector outside the right case, connecting the motor copper busbar at one end inside the right case, and integrating the low-voltage controller on the right case, the integrated installation of the low-voltage controller is realized, and the original TCU position is retained, and the one-to-one correspondence between the TCU software system and the control hardware system such as the transmission hydraulic control is realized. The problem of large space occupation in the installation of the controller of the existing low-voltage hybrid transmission, which leads to difficulty in arranging peripheral parts, and high production cost is solved.

[0042] Compared with the existing high-voltage hybrid transmission case, the transmission case in this embodiment only changes the right case structure. First, the installation position of the high-voltage wire box 101 is cancelled and replaced with an installation interface of the copper bus connector. The left case is the same as the left case of the high-hybrid transmission case, thereby achieving the modularization and platform commonality with the high-voltage hybrid transmission, and retaining the original TCU position, realizing a one-to-one correspondence between the TCU software system and the control hardware systems such as the transmission hydraulic control.

[0043] An oil blocking structure and an oil collecting structure 5 are provided in the right box body 1. The oil blocking structure, the copper busbar connector 2 and the motor copper busbar 4 cooperate to block the oil, so that the splashed lubricating oil flows into the oil collecting structure 5, and then flows into the differential bearing from the lubricating oil hole 6 at the bottom of the oil collecting structure 5 to lubricate the differential bearing.

[0044] By arranging an oil baffle structure and an oil collecting structure in the right case body, and combining the oil baffle structure, the copper busbar connector and the motor copper busbar to cooperate with the oil baffle, the lubricating oil splashed from the differential and the clutch is all collected into the oil collecting structure, and then flows into the differential bearing from the lubricating oil hole at the bottom of the oil collecting structure to lubricate the differential bearing, thereby effectively realizing the collection of splashed lubricating oil and efficient lubrication of the bearings.

[0045] The right box body 1 is provided with a mounting interface 7 for mounting the copper busbar connector 2 , and sealing rings are provided between the mounting interface 7 and the copper busbar connector 2 , and between the outer end surface 8 of the mounting interface 7 and the low-voltage controller 3 .

[0046] By providing sealing rings between the mounting interface and the copper bus connector, as well as between the outer end face of the mounting interface and the low-pressure controller, the sealing performance of the copper bus connector and the controller installation is ensured, preventing transmission oil and external water vapor from flowing into the controller cavity and damaging electronic components or causing a short circuit.

[0047] The oil blocking structure includes an oil blocking rib plate 10 extending from the inner side of the mounting interface 7 toward the outer wall 9 of the motor mounting hole and the outer wall 9 of the motor mounting hole. The higher side of the outer wall 9 of the motor mounting hole is connected to the oil blocking rib plate 10, and the lower side is connected to the oil collecting structure 5.

[0048] The motor copper bar 4 is formed with a first oil retaining structure 11, a second oil retaining structure 12 and an oil collecting tank 13, and the oil collecting tank 13 is located above the oil collecting structure 5;

[0049] The lubricating oil splashed by the differential is divided into two paths through the first oil baffle structure 11 and flows into the oil collecting structure 5. One path is blocked by the copper busbar connector 2, the oil baffle rib plate 10 and the outer wall of the motor mounting hole outer wall 9 and flows into the oil collecting structure 5. The other path is blocked by the first oil baffle structure 11 and flows into the oil collecting tank 13, and then flows into the oil collecting structure 5 from the oil hole at the bottom of the oil collecting tank 13.

[0050] The lubricating oil splashed by the clutch is blocked by the second oil blocking structure 12 and flows into the oil collecting groove 13 , and then flows into the oil collecting structure 5 from the oil holes at the bottom of the oil collecting groove 13 .

[0051] The first oil-blocking structure 11 includes a first side wall 14 formed on a side close to the mounting interface 7, a second side wall 15 formed on a side close to the oil-blocking rib 10, and a third side wall 16 formed on a side close to the outer wall 9 of the motor mounting hole. The first side wall 14, the second side wall 15 and the third side wall 16 are connected end to end.

[0052] The second oil-blocking structure 12 is a fourth side wall formed on the motor copper bar 4 at a side opposite to the outlet of the lubricating oil splashed by the clutch, and the fourth side wall extends to the oil collecting groove 13 .

[0053] exist Figure 7In the figure, the dotted line indicates the flow direction of the differential splash lubricating oil, which is divided into two paths through the first side wall and merges into the oil collecting structure. One path passes through the copper busbar connector part on the outside of the first side wall to reach the oil baffle plate, passes through the obstruction of the oil baffle plate and the outer wall of the motor mounting hole, and merges into the oil collecting node. The other path passes through the obstruction of the inner wall of the first side wall, the second side wall and the third side wall in sequence, merges into the oil collecting tank, and then flows from the oil hole at the bottom of the oil collecting tank to the oil collecting structure.

[0054] exist Figure 7 In the figure, the solid line indicates the flow direction of the clutch splashing lubricating oil. Specifically, the lubricating oil splashing from the clutch directly passes through the obstruction of the fourth side wall, flows into the oil collecting tank, and then flows into the oil collecting structure from the oil hole at the bottom of the oil collecting tank.

[0055] One end of the copper busbar connector 2 outside the right box body 1 is directly connected to the copper busbar of the low voltage controller 3, and one end inside the right box body 1 is directly connected to the motor copper busbar 4;

[0056] The low voltage controller 3 is located on the right box 1 at the original placement position of the high voltage wire box.

[0057] By directly connecting the copper busbar of the low-voltage controller and the copper busbar of the motor to the two ends of the copper busbar connector, not only the reliability of the connection is improved, but also the connection harness is reduced and the production cost is reduced; at the same time, the placement position of the low-voltage controller is made the same as the placement position of the original high-voltage wire box, that is, the low-voltage controller occupies the neutral position of the original high-voltage cavity, thereby realizing the integrated installation of the low-voltage controller without occupying the space position of the transmission and the position of surrounding components, making the whole have the advantages of miniaturization and easy layout.

[0058] The low-voltage controller in this embodiment is a 48V controller, and the copper busbar of the controller, the copper busbar of the motor and the copper busbar connector are all fixed by bolts.

[0059] At least two positioning pin holes 17 are provided on the right box body 1 on the outer side of the mounting interface 7 for positioning the low-voltage controller 3 .

[0060] At least two positioning pin holes are provided on the outer side of the installation interface on the right box body for positioning the low-voltage controller, thereby ensuring the installation accuracy of the low-voltage controller.

[0061] The right box body 1 is provided with at most two first bolt mounting holes 18 on the outer side of the mounting interface 7;

[0062] The low-pressure controller 3 is positioned by the hollow pin 19 and the positioning pin hole 17. The inner hole of the hollow pin 19 has the same diameter as the bolt mounting hole 18. The positioning pin hole 17 is provided with an inner thread that is the same as the first bolt mounting hole 18 at a position close to the bottom of the hole, so that the bolt passes through the hollow pin 19 and cooperates with the positioning pin hole 17 to fix the low-pressure controller 3.

[0063] A second bolt mounting hole 20 is provided on the inner side of the mounting interface 7 on the right box body 1 for mounting the motor copper busbar 4 .

[0064] By using a hollow pin for positioning, and making the inner hole of the hollow pin the same as the aperture of the first bolt mounting hole, and at the same time setting an internal thread the same as the first bolt mounting hole near the bottom of the positioning pin hole, the bolt can pass through the hollow pin and cooperate with the positioning pin hole to fix the low-voltage controller, so that the positioning pin hole can be used together with the first bolt mounting hole to install the low-voltage controller, thereby reducing the bolt mounting holes set on the box body and saving installation space; at the same time, by simultaneously setting the second bolt mounting hole for fixing the low-voltage controller and the motor copper busbar on the right box body, the vibration difference caused by setting the bolt mounting holes on different boxes is avoided.

[0065] The oil retaining rib plate 10, the outer wall 9 of the motor mounting hole and the oil collecting structure 5 are integrally formed with the right box body 1;

[0066] The surface of the motor copper bar 4 is wrapped with insulating material by injection molding.

[0067] This embodiment also provides a car, including the integrated structure of the transmission case in this embodiment.

[0068] The actual assembly process of the integrated structure of the transmission case in this embodiment is as follows: the copper busbar connector is installed vertically from the outside to the inside of the mounting interface on the right case, and a radial seal is formed between the copper busbar connector and the mounting interface through a rubber sealing ring to ensure the sealing performance of the internal cavity of the transmission case; the internal end of the copper busbar connector is directly assembled and fixed with the motor copper busbar by bolts; the installation position of the low-voltage controller is accurately located through the locating pin hole on the outside of the right case, and the end face is sealed with a rubber sealing ring on the joint surface between the low-voltage controller and the right case to ensure the sealing performance of the low-voltage controller cavity, and then a hollow locating pin is inserted into the locating pin hole, and then the low-voltage controller is fixed to the right case by assembling the bolts with the hollow locating pin and the bolt mounting holes on the outside of the right case. Among them, when installing the bolts between the outer end of the copper busbar connector and the copper busbar of the low-voltage controller, the controller end cover 21 needs to be removed and the bolts tightened through this window.

[0069] The integrated structure of the transmission case and the automobile of the present invention, first, integrate a copper busbar connector on the right case of the transmission case, and connect the low-voltage controller at one end outside the right case and connect the motor copper busbar at one end inside the right case, and make the placement position of the low-voltage controller the placement position of the original high-voltage wire box, that is, the low-voltage controller occupies the neutral position of the original high-voltage cavity, thereby realizing the integrated installation of the low-voltage controller without occupying the spatial position of the transmission and the positions of surrounding components, and retaining the original TCU position, realizing the one-to-one correspondence between the TCU software system and the control hardware systems such as the transmission hydraulic control. The invention solves the problem that the installation of the controller of the existing low-voltage hybrid transmission occupies a large space, which makes it difficult to arrange the surrounding parts, and has a high production cost; secondly, by arranging an oil baffle structure and an oil collecting structure in the right case body, and combining the oil baffle structure, the copper busbar connector and the motor copper busbar to cooperate with the oil baffle, the lubricating oil splashed by the differential and the clutch is all collected in the oil collecting structure, and then flows into the differential bearing from the lubricating oil hole at the bottom of the oil collecting structure to lubricate the differential bearing, effectively realizing the collection of splashing lubricating oil and efficient lubrication of the bearing; thirdly, by arranging sealing rings between the mounting interface and the copper busbar connector, and between the outer end face of the mounting interface and the low-voltage controller, the sealing performance of the copper busbar connector and the controller installation is guaranteed, and the transmission oil and external water vapor are prevented from flowing into the controller cavity to damage the electronic components or short circuit; fourthly, by directly connecting the copper busbar of the low-voltage controller and the motor copper busbar to the two ends of the copper busbar connector, not only the reliability of the connection is improved, but also the connection harness is reduced, and the production cost is reduced. Cost; at the same time, the placement position of the low-voltage controller is the placement position of the original high-voltage wire box, that is, the low-voltage controller occupies the neutral position of the original high-voltage cavity, thereby realizing the integrated installation of the low-voltage controller without occupying the space position of the transmission and the position of surrounding components, so that the overall has the advantages of miniaturization and easy layout; finally, by using a hollow pin for positioning, and making the inner hole of the hollow pin the same as the aperture of the first bolt mounting hole, and at the same time providing the same internal thread as the first bolt mounting hole near the bottom of the positioning pin hole, the bolt can pass through the hollow pin and cooperate with the positioning pin hole to fix the low-voltage controller, so that the positioning pin hole can be used together with the first bolt mounting hole to install the low-voltage controller, thereby reducing the bolt mounting holes provided on the box body and saving installation space; at the same time, by providing the second bolt mounting hole for fixing the low-voltage controller and the motor copper bar on the right box body at the same time, the vibration difference caused by providing the bolt mounting holes on different boxes is avoided, and it has the value of promotion and application in the field of automobile transmission technology.

[0070] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. An integrated structure of a transmission case, comprising a transmission case body, characterized in that: A copper busbar connector (2) is integrated on the right case body (1) of the transmission case body; one end of the copper busbar connector (2) outside the right case body (1) is connected to a low-voltage controller (3), and one end inside the right case body (1) is connected to a motor copper busbar (4); the low-voltage controller (3) is integrated and mounted on the right case body (1); The right box body (1) is provided with an oil blocking structure and an oil collecting structure (5), and the oil blocking structure, the copper busbar connector (2) and the motor copper busbar (4) cooperate to block the oil, so that the splashed lubricating oil flows into the oil collecting structure (5), and then flows into the differential bearing from the lubricating oil hole (6) at the bottom of the oil collecting structure (5), thereby lubricating the differential bearing; The right box body (1) is provided with a mounting interface (7) for mounting the copper busbar connector (2); The oil blocking structure comprises an oil blocking rib (10) extending from the inner side of the mounting interface (7) toward the outer wall (9) of the motor mounting hole and the outer wall (9) of the motor mounting hole, wherein the higher side of the outer wall (9) of the motor mounting hole is connected to the oil blocking rib (10), and the lower side is connected to the oil collecting structure (5); A first oil-blocking structure (11), a second oil-blocking structure (12) and an oil collecting groove (13) are formed on the motor copper bar (4); the oil collecting groove (13) is located above the oil collecting structure (5).

2. The integrated structure of the transmission case according to claim 1, characterized in that: A sealing ring is provided between the mounting interface (7) and the copper busbar connector (2), and between the outer end surface (8) of the mounting interface (7) and the low-voltage controller (3).

3. The integrated structure of the transmission case according to claim 2, characterized in that: The lubricating oil splashed from the differential is divided into two paths through the first oil baffle structure (11) and flows into the oil collecting structure (5), one path is blocked by the copper busbar connector (2), the oil baffle rib plate (10) and the outer wall (9) of the motor mounting hole and flows into the oil collecting structure (5), and the other path is blocked by the first oil baffle structure (11) and flows into the oil collecting tank (13), and then flows into the oil collecting structure (5) from the oil hole at the bottom of the oil collecting tank (13); The lubricating oil splashed by the clutch is blocked by the second oil blocking structure (12), flows into the oil collecting groove (13), and then flows into the oil collecting structure (5) from the oil hole at the bottom of the oil collecting groove (13).

4. The integrated structure of the transmission case according to claim 3 is characterized in that: The first oil-blocking structure (11) comprises a first side wall (14) formed on a side close to the mounting interface (7), a second side wall (15) formed on a side close to the oil-blocking rib (10), and a third side wall (16) formed on a side close to the outer wall (9) of the motor mounting hole, wherein the first side wall (14), the second side wall (15) and the third side wall (16) are connected end to end; The second oil-blocking structure (12) is a fourth side wall formed on the motor copper bar (4) at a side opposite to the clutch splashing lubricating oil outlet, and the fourth side wall extends to the oil collecting groove (13).

5. The integrated structure of the transmission case according to claim 1, characterized in that: The copper busbar connector (2) is directly connected to the copper busbar of the low-voltage controller (3) at one end outside the right box (1), and is directly connected to the motor copper busbar (4) at one end inside the right box (1); The low voltage controller (3) is located on the right box (1) at the original location where the high voltage wire box was placed.

6. The integrated structure of the transmission case according to claim 2, characterized in that: At least two positioning pin holes (17) are provided on the right box body (1) on the outside of the mounting interface (7) for positioning the low-voltage controller (3).

7. The integrated structure of the transmission case according to claim 6, characterized in that: The right box body (1) is provided with at most two first bolt mounting holes (18) on the outer side of the mounting interface (7); The low-pressure controller (3) is positioned by a hollow pin (19) cooperating with a positioning pin hole (17); the inner hole of the hollow pin (19) has the same diameter as the bolt mounting hole (18); the positioning pin hole (17) is provided with an inner thread that is the same as the first bolt mounting hole (18) at a position close to the bottom of the hole, so that a bolt passes through the hollow pin (19) and cooperates with the positioning pin hole (17) to fix the low-pressure controller (3); The right box body (1) is provided with a second bolt mounting hole (20) on the inner side of the mounting interface (7) for mounting the motor copper busbar (4).

8. The integrated structure of the transmission case according to claim 3, characterized in that: The oil baffle plate (10), the outer wall of the motor mounting hole (9) and the oil collecting structure (5) are integrally formed with the right box body (1); The surface of the motor copper busbar (4) is wrapped with insulating material by injection molding.

9. A car, characterized in that: An integrated structure comprising a transmission case as described in any one of claims 1 to 8.

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