Battery pack upper shell structure, battery pack and automobile

Abstract

The utility model provides a battery pack upper shell structure, a battery pack and an automobile, and belongs to the technical field of automobiles, the battery pack upper shell structure comprises a battery pack upper cover, and further comprises a battery pack upper cover framework fixed on the battery pack upper cover; the accommodating part is arranged on the battery pack upper cover framework, and the accommodating part is used for mounting electronic equipment. According to the technical scheme, the containing part is arranged on the battery pack upper cover plate framework, the fixing position of the central domain controller can be integrated on the battery pack, the space of a glove storage box, a vehicle middle channel and other positions is not occupied, occupation of the vehicle body space is reduced, the utilization rate of the vehicle body space is increased, and the service life of the vehicle body is prolonged. And the influence on the arrangement of the air-conditioning air duct is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and in particular to a battery pack upper shell structure, a battery pack and an automobile. Background Art

[0002] With the continuous development of new energy vehicles, in order to reduce energy consumption and increase driving range, the requirements for lightweight body design and battery pack capacity are becoming increasingly higher. At the same time, the requirements for passenger space and vehicle storage space are also increasing.

[0003] CTB technology integrates the battery pack and the body floor, and directly integrates the battery cells into the battery system, which can greatly reduce the number of parts, reduce costs, and increase battery capacity and driving range.

[0004] With the development of new energy vehicle automatic driving systems and the increasing complexity of vehicle electrical systems, domain controllers that integrate vehicle-level software functions within specific functional domains, provide faster computing speeds, higher computing volume, and can handle more complex codes are gradually emerging. Among them, the central domain controller is the top priority in the electronic and electrical architecture of the vehicle. Placing the central domain controller (CSC) below the dashboard (IP) on the co-pilot side will reduce the passenger foot space and glove box storage space, and it is located in the collision crumple area of ​​the front panel, which has the risk of damage and affects the realization of system safety functions; there is no sufficient layout space under the seat and other locations. Compared with the above positions, the front end of the vehicle's central channel is a more feasible layout position. The existing technology places the central domain controller (CSC) above the vehicle's central channel, which has the problem of occupying the storage space of the center console and affecting the layout of the air conditioning duct.

[0005] Therefore, the integrated design and layout of the CTB battery pack structure and the on-board controller are important design directions for new energy vehicles. Utility Model Content

[0006] In view of this, one of the purposes of the embodiments of the present application is to provide a battery pack upper shell structure that can improve the problem of encroaching on the storage space of the central control box and affecting the layout of the air duct of the air conditioner.

[0007] In order to achieve the above technical objectives, the technical solutions adopted in this application are as follows:

[0008] In a first aspect, an embodiment of the present application provides a battery pack upper housing structure, including a battery pack upper cover, and further comprising:

[0009] A battery pack upper cover frame, fixed on the battery pack upper cover;

[0010] The accommodating portion is arranged on the battery pack upper cover frame, and the accommodating portion is used to install the electronic device.

[0011] Furthermore, the housing of the electronic device is installed in the accommodating portion, and the housing of the electronic device and the accommodating portion form a mounting cavity for fixing a circuit board of the electronic device.

[0012] Furthermore, a heat conduction mechanism is provided on the inner surface of the installation cavity, and a heat dissipation mechanism is provided on the outer surface of the installation cavity. Furthermore, the heat conduction mechanism includes a plurality of heat conduction ribs, and all the heat conduction ribs are evenly distributed on the inner surface of the installation cavity.

[0013] Furthermore, the heat dissipation mechanism includes a plurality of heat dissipation fins, and all of the heat dissipation fins are evenly arranged on the outer surface of the mounting shell.

[0014] Furthermore, the battery pack upper cover frame is connected to the vehicle body in the X direction, Y direction and Z direction.

[0015] The directions, Y direction and Z direction are based on the vehicle coordinate system.

[0016] Furthermore, the battery pack upper cover frame includes:

[0017] A middle channel portion extending in the X direction, wherein two ends of the middle channel portion are respectively connected to the front cross beam of the vehicle body and the rear cross beam of the vehicle body;

[0018] The cross beam portion extends toward the Y direction, the end of the middle channel portion is connected to the door sill, and the top of the cross beam portion is connected to the front seat of the vehicle body.

[0019] Furthermore, the battery pack upper shell structure also includes a sealing ring, which is arranged in an annular space, and the annular space is surrounded by the battery pack upper cover, the vehicle body sill beam, and the vehicle body front cross beam and vehicle body rear cross beam.

[0020] In a second aspect, an embodiment of the present application proposes a battery pack, comprising the above-mentioned battery pack upper shell structure.

[0021] In a third aspect, an embodiment of the present application proposes a car, comprising the above-mentioned battery pack.

[0022] The utility model adopting the above technical solution has the following advantages:

[0023] In the technical solution provided in the present application, a accommodating portion is provided on the upper cover frame of the battery pack, which can integrate the fixed position of the central domain controller on the battery pack without occupying space in locations such as the glove storage box and the vehicle's central passage, thereby reducing the occupancy of the vehicle body space, improving the utilization rate of the vehicle body space, and reducing the impact on the layout of the air-conditioning duct.

[0024] In the technical solution provided in the present application, a first heat dissipation mechanism is provided in the accommodation portion, and a second heat dissipation mechanism is provided on the electronic device, thereby increasing the heat exchange area of ​​the electronic device, so that the electronic device can dissipate heat in time even when operating at high power, and maintain the operating temperature within a reasonable temperature range.

[0025] In the technical solution provided in the present application, the battery pack upper cover frame is connected to the vehicle body in the X direction, Y direction and Z direction, and the battery pack upper cover frame is arranged on the battery pack upper cover, which improves the connection strength between the battery pack and the vehicle body in the three directions of X, Y and Z, and also improves the overall strength of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present application may be further described by the non-limiting embodiments given in the accompanying drawings. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings may be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the upper housing structure of the battery pack provided in this embodiment;

[0028] Figure 2 An exploded view of the upper housing of the battery pack provided in this embodiment;

[0029] Figure 3 A top view of the battery pack cover skeleton structure provided in this embodiment;

[0030] Figure 4 A bottom view of the upper cover skeleton structure of the battery pack provided in this embodiment;

[0031] Figure 5 A partial exploded view of the upper cover of the battery pack provided in this embodiment;

[0032] Figure 6 A bottom view of a partial exploded view of the upper cover of the battery pack provided in this embodiment.

[0033] Icon: 100-battery pack upper shell structure;

[0034] 110-battery pack cover, 1101-sealing strip;

[0035] 120-battery pack upper cover frame; 121-middle channel; 122-front crossbeam of front seats; 123-rear crossbeam of front seats; 124-flange structure; 1211-middle channel front connection; 1212-middle channel rear connection; 1213-groove; 1214-threaded hole; 1215-plug port; 1216-battery pack lower shell mounting point; 1217-first reinforcing rib; 1218-first heat conducting rib; 1219-first heat sink; 1221-sill beam front connection; 1222-front seat front mounting point; 1223-second reinforcing rib; 1224-third reinforcing rib; 1231-sill beam rear connection; 1232-front seat rear mounting point; 1233-fourth reinforcing rib; 1234-fifth reinforcing rib; 130-central domain controller upper shell;

[0036] 1301- upper shell heat sink;

[0037] 1302-upper housing mounting hole;

[0038] 1303- upper shell heat conducting rib;

[0039] 140-Central Domain Controller Circuit Board. DETAILED DESCRIPTION

[0040] The present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] like Figure 1 , Figure 2 As shown, the present application provides a battery pack upper shell structure, wherein the battery pack upper shell structure 100 includes a battery pack upper cover 110, a battery pack upper cover frame 120, a central domain controller upper shell 130, and a central domain controller circuit board 140. A sealing strip 1101 is arranged around the upper surface of the battery upper cover 110, and the sealing strip 1101 forms a seal with the body sill beam and the front and rear cross beams of the body, thereby meeting the sealing requirements of the passenger compartment.

[0042] In this embodiment, the battery pack cover 110 is a part of the vehicle floor. Integrating the battery pack cover 110 on the vehicle floor can increase the space for installing the battery pack, which has a good weight reduction effect.

[0043] In this embodiment, the battery pack upper cover 110 is a sheet metal stamping part, and the battery pack upper cover frame 120 and the central domain controller upper shell 130 are aluminum alloy die-casting parts.

[0044] The bottom of the battery pack upper frame 120 has a flange structure 124, and the flange structure 124 is attached to and connected to the upper surface of the battery pack upper cover 110, that is, the battery pack upper frame 120 is installed on the top of the battery pack upper cover 110, thereby improving the strength of the battery pack upper cover 110.

[0045] The battery pack upper cover frame 120 includes a middle channel portion 121 extending longitudinally along the vehicle body and a crossbeam portion connected to the middle channel portion 121, the crossbeam portion includes a front crossbeam 122 for the front seats and a rear crossbeam 123 for the front seats, the front crossbeam 122 for the front seats and the rear crossbeam 123 for the front seats are arranged in parallel at intervals along the front and rear directions of the vehicle body, and the extension direction of the crossbeam portion and the extension direction of the middle channel portion 121 are perpendicular to each other.

[0046] The end of the middle channel portion 121 is provided with a middle channel front connection portion 1211 connected to the front cross beam of the vehicle body, and a middle channel rear connection portion 1212 connected to the rear cross beam of the vehicle body. The end of the front seat front cross beam 122 is provided with a sill beam front connection portion 1221 connected to the vehicle body sill, and the end of the front seat rear cross beam 123 is provided with a sill beam rear connection portion 1231 connected to the vehicle body sill.

[0047] like Figure 5 , Figure 6 As shown, the battery pack cover 110 is connected to the vehicle body through a middle channel front connection portion 1211 , a middle channel rear connection portion 1212 , a sill beam front connection portion 1221 , and a sill beam rear connection portion 1231 .

[0048] In this embodiment, a receiving portion is provided on the battery pack upper cover frame 110, and the receiving portion is used to install electronic equipment, such as a controller, a processor, etc. In the prior art, the electronic equipment and the battery pack are generally arranged separately, but in this embodiment, the electronic equipment is integrated into the battery pack upper cover, which improves the utilization rate of the vehicle body space, reduces the storage space occupied by the central control box, and reduces the impact of the air conditioning duct arrangement.

[0049] In at least one embodiment, the electronic device refers to a vehicle-mounted controller. In the prior art, the electronic device is installed on the vehicle body, such as in the armrest box, the air-conditioning duct, under the passenger side instrument panel (IP), etc. In this embodiment, the installation position of the above-mentioned electronic device is transferred to the battery pack upper cover frame 110, that is, it is integrated with the battery pack.

[0050] In this embodiment, the accommodating portion is a groove portion 1213 arranged on the battery pack upper cover frame 110, and the electronic device is a central domain controller. At the same time, the accommodating portion can also be other mounting structures for fixing the electronic device, and the mounting structure can integrate the electronic device on the battery pack upper cover. Specifically:

[0051] like Figure 2 , Figure 3As shown, the middle channel portion 121 has a groove portion 1213 as a mounting lower housing for the circuit board 140 of the central domain controller. A plurality of threaded holes 1214 are evenly arranged around the groove portion 1213 for mounting the upper housing 130 of the central domain controller.

[0052] The upper shell 130 of the central domain controller covers the groove portion 1213 and together with the groove portion 1213 forms an installation cavity. The central domain controller circuit board 140 is arranged inside the installation cavity. Plug ports 1215 for multiple plug-in wiring harnesses are arranged on both sides of the installation cavity. External wiring harnesses enter the installation cavity through the plug ports 1215 to achieve electrical connection with the central domain controller circuit board 140.

[0053] The inner surface of the installation cavity is provided with a heat conduction mechanism for conducting the heat of the central domain controller to the outside of the installation cavity, and the heat conduction mechanism includes a first heat conduction rib 1218 provided on the inner surface of the groove portion 1213 and a second heat conduction rib 1303 inside the lower surface of the upper shell of the central domain controller, and the second heat conduction rib 1303 is specifically arranged according to the internal space of the upper shell. It is used to increase the heat exchange area between the upper shell of the central domain controller and the outside, so that the temperature of the central domain controller circuit board 140 can be kept within a reasonable range even when the central domain controller circuit board 140 is running at high power.

[0054] The installation cavity is also provided with a heat dissipation mechanism for dissipating the heat conducted away by the heat conduction mechanism.

[0055] The heat dissipation mechanism includes a first heat sink 1219 arranged on the outer surface of the groove portion 1213, and a second heat sink 1301 arranged outside the upper shell 130 of the central domain controller. The second heat sink 1301 is composed of a plurality of evenly distributed vertical ribs, and all the vertical ribs are evenly spaced along the X direction of the vehicle to increase the heat dissipation area of ​​the central domain controller.

[0056] A plurality of upper shell mounting holes 1302 are evenly arranged around the upper shell 130 of the central domain controller, and the upper shell mounting holes 1302 correspond to the threaded holes 1214 on the groove portion 1213 , and are used to realize the mutual connection between the upper shell of the central domain controller and the upper cover frame 120 of the battery pack.

[0057] like Figure 4 As shown, at least two battery pack lower shell mounting points 1216 for mounting the battery pack lower shell are disposed at the bottom of the middle channel portion 121, and the battery pack lower shell mounting points 1216 are disposed at intervals along the extension direction of the middle channel. The bottom of the middle channel portion 121 is also provided with first reinforcing ribs 1217 that are staggered horizontally and vertically, and the number of the first reinforcing ribs 1217 can be specifically set according to the spatial position.

[0058] like Figure 3As shown, the middle channel portion 121 is connected to the cross beam portion, the middle channel portion 121 is perpendicular to the cross beam portion, the middle channel portion 121 extends in the X direction, and the cross beam portion extends in the Y direction. Both ends of the middle channel portion 121 are respectively connected to the front cross beam and the rear cross beam of the vehicle body, and both ends of the cross beam portion are respectively connected to the door sills arranged on both sides of the vehicle body, and the top of the cross beam portion is connected to the front seat, so that the battery pack is connected to the vehicle body in the X direction, the Y direction and the Z direction through the battery pack upper cover frame, thereby improving the stability of the connection between the battery pack and the vehicle body.

[0059] There are two cross beams in this embodiment, one of which is the front cross beam 122 of the front row of seats, and the other cross beam is the rear cross beam 123 of the front row of seats. At least two front seat front mounting points 1222 are arranged on the top surfaces of both sides of the front seat front cross beam 122, respectively, for connecting with the front part of the front row of seats. At least two rear seat mounting points 1232 are arranged on the top surfaces of both sides of the front seat rear cross beam 123, respectively, for connecting with the rear part of the front row of seats. The seat mounting points are arranged at intervals along the extension direction of the cross beam.

[0060] like Figure 4 As shown, the bottom of the front cross beam 122 and the rear cross beam 123 of the front row of seats are both provided with a plurality of raised reinforcing ribs, which can effectively enhance the structural strength of the cross beam body. The reinforcing ribs include a second reinforcing rib 1223 extending along the length direction of the front cross beam 122 of the front row of seats, and a third reinforcing rib 1224 distributed with the front mounting point 1222 of the front row of seats as the center. And a fourth reinforcing rib 1233 extending along the length direction of the rear cross beam 123 of the front row of seats, and a fifth reinforcing rib 1234 distributed with the rear mounting point 1232 of the front row of seats as the center. It should be noted that the number and position of each structure are not specifically limited in this embodiment. In the actual application process, the structure of each part is adjusted according to the strength requirements of the design.

[0061] The traditional battery pack cover, vehicle body floor and floor frame, and central domain controller are all independently assembled individual components. The CTB battery pack upper shell structure proposed in the utility model integrates the battery pack cover, vehicle body floor and floor frame, and central domain controller into one battery pack upper shell structure by adopting a combination of stamping and die-casting processes. The structural integrated design has a good weight reduction effect, reduces the number of parts, reduces costs, and increases battery capacity and driving range. At the same time, the installation process of the central domain controller module is eliminated, which facilitates the layout and utilization of the passenger compartment space.

[0062] This embodiment further proposes a battery pack, including the above-mentioned battery pack upper shell. The battery pack of this embodiment is a CTB battery pack.

[0063] This embodiment also provides a car, comprising the above-mentioned battery pack.

[0064] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery pack upper shell structure, comprising a battery pack upper cover, characterized in that: Also includes: A battery pack upper cover frame, fixed on the battery pack upper cover; The accommodating portion is arranged on the battery pack upper cover frame, and the accommodating portion is used to install the electronic device.

2. The upper housing structure of the battery pack according to claim 1, characterized in that: The housing of the electronic device is installed in the accommodating portion, and the housing of the electronic device and the accommodating portion form an installation cavity for fixing a circuit board of the electronic device.

3. The upper housing structure of the battery pack according to claim 2, characterized in that: The inner surface of the installation cavity is provided with a heat conduction mechanism, and the outer surface of the installation cavity is provided with a heat dissipation mechanism.

4. The upper housing structure of the battery pack according to claim 3, characterized in that: The heat conduction mechanism comprises a plurality of heat conduction ribs, and all of the heat conduction ribs are evenly distributed on the inner surface of the installation cavity.

5. The upper housing structure of the battery pack according to claim 3, characterized in that: The heat dissipation mechanism comprises a plurality of heat dissipation fins, and all the heat dissipation fins are evenly arranged on the outer surface of the mounting shell.

6. The upper housing structure of the battery pack according to claim 1, characterized in that: The battery pack upper cover frame is connected to the vehicle body in the X direction, the Y direction and the Z direction, and the X direction, the Y direction and the Z direction are all based on the vehicle coordinate system.

7. The upper housing structure of the battery pack according to claim 6, characterized in that: The battery pack upper cover frame comprises: A middle channel portion extending in the X direction, wherein two ends of the middle channel portion are respectively connected to the front cross beam of the vehicle body and the rear cross beam of the vehicle body; The cross beam portion extends toward the Y direction, the end of the middle channel portion is connected to the door sill, and the top of the cross beam portion is connected to the front seat of the vehicle body.

8. The upper housing structure of the battery pack according to claim 7, characterized in that: The battery pack upper shell structure also includes a sealing ring, which is arranged in an annular space. The annular space is surrounded by the battery pack upper cover, the vehicle body sill beam, and the vehicle body front cross beam and vehicle body rear cross beam.

9. A battery pack, characterized in that: A battery pack upper shell structure comprising any one of claims 1-8.

10. An automobile, characterized in that: A battery pack comprising the battery pack of claim 9.

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