Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle, and relates to the technical field of batteries, the battery pack is integrated on a frame of the vehicle, and the battery pack comprises a box cover, a box body and at least one battery module; a hoisting support is arranged on the box cover and connected with the frame, and the box cover is used for forming a vehicle body floor of the vehicle; the battery module is arranged in the box body; the box body is connected with the box cover. The battery pack provided by the utility model is integrated on the vehicle frame, so that the space is saved, the weight is reduced, and the connection strength of the battery pack is improved through the hoisting bracket.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and a vehicle. Background Art

[0002] With the development of new energy vehicles, solving the mileage anxiety of new energy vehicles has become an urgent problem to be solved. In the related art, the battery pack of new energy vehicles is usually set at the chassis position of the car. Due to the limited space size of the chassis position and in order to ensure a safe distance between the chassis and the bottom surface, the size of the battery pack is affected, especially the design space of the battery pack in the height direction. In addition, installing the battery pack at the chassis position will increase the weight and affect the endurance of the car. Because the battery pack in the related art is usually only connected to the chassis through the box cover, the strength of the connection is poor, and there are certain safety hazards. Utility Model Content

[0003] The present application provides a battery pack and a vehicle, wherein the battery pack can be integrated on a vehicle frame, thereby reducing weight, improving connection strength, and solving the problem of insufficient design space for the battery pack.

[0004] In a first aspect, the present application provides a battery pack integrated on a vehicle frame, comprising a box cover, a box body and at least one battery module;

[0005] A hanging bracket is provided on the box cover, the hanging bracket is connected to the vehicle frame, and the box cover is used to form the body floor of the vehicle;

[0006] The battery module is arranged in the box body; the box body is connected with the box cover.

[0007] In some embodiments, a first isolation beam is disposed in the box body, a first cross beam is disposed on the frame, the first isolation beam, the first cross beam and the hanging bracket extend in the same direction, and the first isolation beam and the first cross beam correspond to the positions of the hanging bracket respectively;

[0008] The hanging bracket is connected with the first cross beam and the first isolation beam respectively.

[0009] In some embodiments, a buffer component is disposed on a surface of one side of the battery module close to the box cover.

[0010] In some embodiments, the buffer assembly includes at least one plastic support bar, the plastic support bar is connected to the battery module, and the extension direction of the plastic support bar is the same as the arrangement direction of the battery cells in the battery module.

[0011] In some embodiments, the buffer component includes a plurality of foams, and the plurality of foams are distributed on the surface of the battery module at intervals.

[0012] In some embodiments, a first accommodating cavity and a second accommodating cavity are provided in the box body, and the first accommodating cavity and the second accommodating cavity are separated by a second isolation beam provided in the box body;

[0013] A movable beam is arranged between the second isolation beam and the box cover, and the movable beam is connected to the second isolation beam.

[0014] In some embodiments, at least one groove is provided on a side of the second isolation beam close to the box cover; the movable beam and the groove form a threading hole.

[0015] In some embodiments, the box cover includes a first box cover and a second box cover, and the first box cover and the second box cover are integrally formed;

[0016] The first box cover covers the first accommodating cavity, and the second box cover covers the second accommodating cavity;

[0017] The first tank cover and the second tank cover are connected to the vehicle frame, and the first tank cover forms a vehicle body floor.

[0018] In some embodiments, a first connecting portion is disposed between the first box cover and the second box cover, a second cross beam is disposed on the vehicle frame, and positions of the first connecting portion, the second isolation beam and the second cross beam correspond to each other.

[0019] In some embodiments, a sealing strip is provided on the circumference of the edge of the box cover close to the frame;

[0020] The movable beam corresponds to the position of the second cross beam, and part of the sealing strip is located between the movable beam and the second cross beam.

[0021] In a second aspect, the present application provides a vehicle comprising a battery pack as described above.

[0022] In the present application, the battery pack is integrated into the frame of the vehicle, and a lifting bracket is provided on the box cover. The lifting bracket is connected to the frame so that the box cover can form a body floor. The battery module is placed in the accommodating cavity of the box body, and the box body is connected to the box cover, so that the battery pack is fixed to the frame as a whole. Since the box cover is integrated into the frame to form the body floor, the space occupied by the repeated setting of the body floor and the box cover can be reduced, thereby increasing the design space of the battery pack, and the weight of the body is reduced by using the box cover as the body floor. The lifting bracket on the box cover is connected to the frame and the first isolation beam at the same time. The frame can realize the lifting of the battery pack through the lifting bracket, thereby improving the connection strength between the battery pack and the frame and reducing the safety hazard of the battery pack falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a schematic structural diagram of a frame provided in an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of a top view of a battery pack provided in an embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the box and the battery module provided in the embodiment of the present application;

[0027] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0028] Figure 5 is a longitudinal cross-sectional view of a battery pack and a vehicle frame after being assembled according to an embodiment of the present application;

[0029] Figure 6 yes Figure 5 The enlarged view of point B in the middle;

[0030] Figure 7 yes Figure 5 Enlarged view of point C in the middle;

[0031] Figure 8 It is a schematic diagram of the vehicle structure provided in an embodiment of the present application.

[0032] Description of reference numerals:

[0033] 100. Battery pack; 1. Box cover; 11. First box cover; 12. Second box cover; 13. First connecting part; 2. Box body; 21. First isolation beam; 22. Second isolation beam; 221. Groove; 3. Battery module; 4. Lifting bracket; 5. Sealing strip; 6. Plastic support strip; 7. Foam; 8. Movable beam; 200. Frame; 201. First cross beam; 202. Second cross beam; 300. Vehicle. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0035] In a first aspect, an embodiment of the present application provides a battery pack 100 , which is integrated on a frame 200 of a vehicle 300 , and includes a box cover 1 , a box body 2 , and at least one battery module 3 ;

[0036] A hanging bracket 4 is provided on the box cover 1, and the hanging bracket 4 is connected to the vehicle frame 200. The box cover 1 is used to form a body floor of the vehicle 300;

[0037] The battery module 3 is arranged in the box body 2; the box body 2 is connected to the box cover 1.

[0038] The structure of the frame 200 is as follows: Figure 1 As shown, the battery pack 100 is integrated on the vehicle frame 200, and the battery pack 100 includes a box cover 1, a box body 2 and at least one battery module 3; the box cover 1 matches the size of the frame 200, and a hanging bracket 4 is provided on the box cover 1. After the hanging bracket 4 is connected to the frame 200, the box cover 1 can be fixed on the frame 200, and the box cover 1 can be used as the vehicle body floor. That is, the box cover 1 serves as both the cover body and the vehicle body floor of the battery pack 100. Since there is no need to repeatedly set the box cover 1 and the vehicle body floor, the design space in the height direction of the vehicle 300 is increased, and the overall weight is reduced, which facilitates the installation of a battery pack 100 with a stronger endurance. As shown Figure 1 and 2 As shown, the frame 200 and the box cover 1 are provided with second connecting parts corresponding to the circumferential direction of the edges, and the frame 200 and the box cover 1 are connected simultaneously through the second connecting parts and the lifting bracket 4. After the box cover 1 is connected to the frame 200, a vehicle body floor is formed, and the lifting bracket 4 can be used as a central lifting point of the battery pack 100, thereby improving the connection strength between the box cover 1 and the frame 200.

[0039] like Figure 3 As shown, the battery module 3 is disposed in the box body 2, and the box body 2 is connected to the box cover 1. Figure 2 and 3As shown, the box cover 1 and the box body 2 are correspondingly provided with third connecting parts on the circumferential direction of the edges, and the box cover 1 and the box body 2 are connected as a whole through the third connecting parts provided on the circumferential direction of the edges.

[0040] In some embodiments, a first isolation beam 21 is provided in the box body 2, and a first cross beam 201 is provided on the frame 200. The extension directions of the first isolation beam 21, the first cross beam 201 and the lifting bracket 4 are the same, and the first isolation beam 21 and the first cross beam 201 correspond to the positions of the lifting bracket 4 respectively; the lifting bracket 4 is connected to the first cross beam 201 and the first isolation beam 21 respectively.

[0041] like Figure 5 and 6 As shown, the lifting bracket 4 is connected to the first cross beam 201 in the frame 200 and the first isolation beam 21 in the box body 2. The battery pack 100 is lifted by connecting the first cross beam 201 to the lifting bracket 4 and the lifting bracket 4 to the first isolation beam 21, thereby improving the lifting strength through the frame 200.

[0042] In some embodiments, a buffer component is disposed on a surface of one side of the battery module 3 close to the box cover 1 .

[0043] In order to prevent vibration during vehicle driving and deformation of the box cover 1 caused by passengers stepping on it, which may lead to damage or short circuit of the CCS in the battery module 3, a buffer component is provided on the surface of the battery module 3 on one side close to the box cover 1.

[0044] Specifically, Figure 3 As shown, the buffer assembly includes at least one plastic support bar 6 , which is connected to the battery module 3 , and the extension direction of the plastic support bar 6 is the same as the arrangement direction of the battery cells in the battery module 3 .

[0045] By setting the plastic support bar 6 on the side surface of the battery module 3 close to the box cover 1, the box cover 1 above the battery module 3 can be supported, and the plastic support bar 6 has a certain elasticity, which can reduce the excessive deformation of the box cover 1 caused by the passengers stepping on it, and reduce the probability of CCS damage or short circuit.

[0046] In addition, the plastic support bar 6 is connected to the battery module 3, and the extension direction of the plastic support bar 6 is the same as the arrangement direction of the battery cells in the battery module 3. While supporting the box cover 1, the plastic support bar 6 can further connect multiple battery cells in the battery module 3 into a whole, and evenly disperse the pressure generated by the occupant stepping on the box cover 1, thereby reducing the probability of damage to the box cover 1.

[0047] For example, Figure 3 As shown, a plurality of plastic support strips 6 are distributed at intervals on the surface of the battery module 3 close to the box cover 1, respectively supporting different areas to improve the supporting effect.

[0048] In some embodiments, Figure 3 As shown, the buffer component includes a plurality of foams 7 , and the plurality of foams 7 are distributed at intervals on the surface of the battery module 3 .

[0049] That is, a plurality of foams 7 are disposed on a surface of one side of the battery module 3 close to the box cover 1 , so as to strengthen the supporting effect on the box cover 1 and further improve the supporting effect on the box cover 1 .

[0050] For example, Figure 3 As shown, the foam 7 can also be a strip of foam, and its extension direction is the same as the extension direction of the plastic support strip 6. While improving the supporting effect, it can also further connect multiple battery cells in the battery module 3 into a whole.

[0051] In some embodiments, Figure 5 and 7 As shown, a first accommodating cavity and a second accommodating cavity are provided in the box body 2, and the first accommodating cavity and the second accommodating cavity are separated by a second isolation beam 22 provided in the box body 2;

[0052] A movable beam 8 is provided between the second isolation beam 22 and the box cover 1 , and the movable beam 8 is connected to the second isolation beam 22 .

[0053] like Figure 5 and 7 As shown, the box body 2 is divided into a first accommodating chamber and a second accommodating chamber by a second isolation beam 22. The first accommodating chamber is used to accommodate the battery module 3, that is, the module compartment, and the second accommodating chamber is used to accommodate electrical components, that is, the electrical compartment. By setting the module compartment and the electrical compartment separately, the battery module 3 and the electrical components can be separated, further improving the safety of the battery pack 100. The second isolation beam 22 and the movable beam 8 can support the box cover 1 to prevent the box cover 1 from sinking due to occupants stepping on it.

[0054] In some embodiments, at least one groove 221 is provided on a side of the second isolation beam 22 close to the box cover 1 ; the movable beam 8 and the groove 221 form a threading hole.

[0055] like Figure 4 As shown, at least one groove 221 is provided on the side of the second isolation beam 22 close to the box cover 1 , and a movable beam 8 is provided between the second isolation beam 22 and the box cover 1 , and the movable beam 8 and the groove 221 on the second isolation beam 22 form a threading hole.

[0056] The battery module 3 in the module compartment and the electrical components in the electrical compartment are connected via copper busbars and wiring harnesses. The threading holes formed by the grooves 221 on the movable beam 8 and the second isolation beam 22 allow the copper busbars and wiring harnesses to pass through, thereby achieving connection between the battery module 3 and the electrical components.

[0057] The movable beam 8 and the second isolation beam 22 can be fixedly connected or detachably connected. When the movable beam 8 and the second isolation beam 22 are fixedly connected, the copper busbar and the wiring harness can pass through the threading hole to achieve the connection between the battery module 3 and the electrical component; when the movable beam 8 and the second isolation beam 22 are detachably connected, the copper busbar and the wiring harness can be placed on the groove 221 without installing the movable beam 8, and then the movable beam 8 can be installed, thereby improving the convenience of the copper busbar and the wiring harness.

[0058] Exemplarily, the movable beam 8 and the second isolation beam 22 can be connected by using blind rivets. When the movable beam 8 is not installed, the copper busbar and the wiring harness are placed at the position of the groove 221, and then the movable beam 8 and the second isolation beam 22 are connected by using blind rivets. The copper busbar and the wiring harness pass through the threading holes formed by the grooves 221 on the movable beam 8 and the second isolation beam 22.

[0059] In some embodiments, Figure 2 As shown, the box cover 1 includes a first box cover 11 and a second box cover 12, and the first box cover 11 and the second box cover 12 are integrally formed;

[0060] The first box cover 11 covers the first accommodating cavity, and the second box cover 12 covers the second accommodating cavity;

[0061] The first tank cover 11 and the second tank cover 12 are connected to the vehicle frame 200 , and the first tank cover 11 forms a vehicle body floor.

[0062] That is, the box cover 1 includes two parts, the first box cover 11 and the second box cover 12, which correspond to the first accommodating cavity and the second accommodating cavity in the box body 2, respectively, wherein the first box cover 11 forms a vehicle body floor after being installed on the vehicle frame 200. The second box cover 12 and the second accommodating cavity form an electrical compartment, and part of the second box cover 12 does not serve as a vehicle body floor.

[0063] In some embodiments, a first connecting portion 13 is disposed between the first tank cover 11 and the second tank cover 12, a second cross beam 202 is disposed on the vehicle frame, and positions of the first connecting portion 13, the second isolation beam 22 and the second cross beam 202 correspond to each other.

[0064] The first box cover 11, the second box cover 12 and the first connecting portion 13 can be of one-piece design. The first box cover 11 serves as the vehicle body floor. The positions of the first connecting portion 13, the second isolation beam 22 and the second cross beam 202 correspond to each other. The first box cover 11 and the second box cover 12 are divided into two different areas by the cooperation between the first connecting portion 13 and the second cross beam 202. The second isolation beam 22 and the movable beam 8 located above the second isolation beam 22 support the first connecting portion 13 and the second cross beam 202.

[0065] In some embodiments, Figure 2 and 7As shown, a sealing strip 5 is provided on one side of the box cover 1 close to the frame 200;

[0066] The movable beam 8 corresponds to the position of the second cross beam 202 , and a portion of the sealing strip 5 is located between the movable beam 8 and the second cross beam 202 .

[0067] That is, the box cover 1 and the vehicle frame 200 are sealed by the sealing strip 5 to achieve a sealing and waterproofing effect. Specifically, the first box cover 11 serves as a vehicle body floor, and the sealing strip 5 can be provided only on the circumference of the edge of the first box cover 11 .

[0068] Furthermore, if Figure 7 As shown, the first connection part 13 forms a concave structure between the first box cover 11 and the second box cover 12, the sealing strip 5 is arranged between the first connection part 13 and the second cross beam 202, and the movable beam 8 corresponds to the position of the second cross beam 202, and part of the sealing strip 5 is located between the movable beam 8 and the second cross beam 202, so that the frame 200 and the first connection part 13 form a sealed connection, and the second isolation beam 22 and the movable beam 8 located below the first connection part 13 can form a good support for the first connection part 13 and the sealing strip 5, and the movable beam 8 and the second cross beam 202 play a squeezing role on this part of the sealing strip 5 to achieve a better sealing effect. At the same time, the second isolation beam 22 and the movable beam 8 can also support the box cover 1 to avoid the sealing failure of the sealing strip 5 caused by the sinking of the box cover 1 due to the occupant stepping on it.

[0069] It should be understood that, in the embodiment of the present application, the sealing strip 5 is located on the side of the box cover 1 close to the frame 200; part of the sealing strip 5 is located between the movable beam 8 and the second cross beam 202, which means that part of the sealing strip 5 is located at a corresponding position between the movable beam 8 and the second cross beam 202 on the box cover 1, and the movable beam 8 and the box cover 1 squeeze the first connecting portion 13 and the sealing strip 5 in the middle to improve the sealing effect.

[0070] In a second aspect, the present application provides a vehicle 300, such as Figure 8 As shown, the battery pack 100 as described above is included.

[0071] By applying the above-mentioned battery pack 100 to the vehicle 300, since the battery pack 100 is integrated on the vehicle frame 200, the box cover 1 of the battery pack 100 can be used as the vehicle body floor, reducing the design space for repeatedly setting the box cover 1 and the vehicle body floor, improving space utilization, and facilitating the installation of a battery pack 100 with a stronger endurance. The box cover 1 of the battery pack 100 is provided with a hanging bracket 4, which can improve the connection strength between the box body 2 of the battery pack 100 and the vehicle frame 200 and reduce safety hazards.

[0072] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery pack integrated on a vehicle frame, characterized in that: It includes a box cover, a box body and at least one battery module; The box cover is provided with a hanging bracket, the hanging bracket is connected to the vehicle frame, and the box cover is used to form the body floor of the vehicle; The battery module is arranged in the box body; the box body is connected to the box cover.

2. The battery pack according to claim 1, characterized in that: A first isolation beam is provided in the box body, and a first cross beam is provided on the frame. The first isolation beam, the first cross beam and the hanging bracket have the same extension direction, and the first isolation beam and the first cross beam correspond to the positions of the hanging bracket respectively; The hanging bracket is connected to the first cross beam and the first isolation beam respectively.

3. The battery pack according to claim 1, characterized in that: A buffer component is arranged on a surface of one side of the battery module close to the box cover.

4. The battery pack according to claim 3, characterized in that: The buffer assembly includes at least one plastic support bar, the plastic support bar is connected to the battery module, and the extension direction of the plastic support bar is the same as the arrangement direction of the battery cells in the battery module.

5. The battery pack according to claim 3, characterized in that: The buffer component includes a plurality of foams, and the plurality of foams are distributed on the surface of the battery module at intervals.

6. The battery pack according to any one of claims 1 to 5, characterized in that: A first accommodating cavity and a second accommodating cavity are arranged in the box body, and the first accommodating cavity and the second accommodating cavity are separated by a second isolation beam arranged in the box body; A movable beam is provided between the second isolation beam and the box cover, and the movable beam is connected to the second isolation beam.

7. The battery pack according to claim 6, characterized in that: At least one groove is provided on a side of the second isolation beam close to the movable beam, and the movable beam and the groove form a threading hole.

8. The battery pack according to claim 6, characterized in that: The box cover comprises a first box cover and a second box cover, wherein the first box cover and the second box cover are integrally formed; The first box cover covers the first accommodating cavity, and the second box cover covers the second accommodating cavity; The first tank cover and the second tank cover are connected to the vehicle frame, and the first tank cover forms a vehicle body floor.

9. The battery pack according to claim 8, characterized in that: A first connecting portion is provided between the first box cover and the second box cover, a second cross beam is provided on the vehicle frame, and the positions of the first connecting portion, the second isolation beam and the second cross beam correspond to each other.

10. The battery pack according to claim 9, characterized in that: The box cover is provided with a sealing strip on one side close to the frame; The movable beam corresponds to the position of the second cross beam, and part of the sealing strip is located between the movable beam and the second cross beam.

11. A vehicle, characterized in that: Comprising a battery pack as described in any one of claims 1-10.

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