Battery system for vehicle and vehicle

Abstract

The invention provides a battery system for a vehicle and the vehicle. The battery system comprises a battery pack and a battery pack accommodating part, the battery pack accommodating part is provided with an inner cavity, the battery pack is arranged in the inner cavity, and the battery pack accommodating part is provided with a top opening. According to the scheme, a user does not need to bend down when taking and placing the battery, the battery system conforms to the ergonomic design and is suitable for a high-frequency battery replacement scene, and the situation that the getting-on and getting-off convenience is reduced due to the fact that a getting-on threshold boundary beam is lifted in the traditional design is avoided. Besides, the battery pack accommodating part in the battery system is arranged into a sealing structure, so that the battery pack can be sealed without depending on the structure of the battery pack, the aging and environmental influence of the battery pack are avoided, and the safety and reliability of the battery pack are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a battery system for a vehicle and a vehicle having the battery system. Background Art

[0002] With the rapid development of vehicle technology, especially in the context of growing demand for urban distribution and short-distance transportation, users have increasing requirements for the convenience and efficiency of replaceable batteries in vehicles. However, the battery system in the prior art is usually designed under the vehicle floor, and some battery systems cannot be removed from the vehicle for charging. Therefore, the battery design in the prior art not only leads to low charging efficiency, but also requires users to squat when replacing batteries, which causes inconvenient manual operation. In addition, the battery system in the prior art also has the following disadvantages: the battery pack is heavy, making it inconvenient to replace the battery; the battery pack has poor sealing; there is a risk of the battery pack falling and the convenience of users getting on and off the vehicle is poor.

[0003] Therefore, it is necessary to provide an improved battery system for a vehicle and a vehicle having the battery system to at least partially solve the problems existing in the prior art. Summary of the invention

[0004] In order to solve the above technical problems, according to one aspect of the present invention, a battery system for a vehicle is provided. The battery system comprises:

[0005] Battery pack; and

[0006] A battery containing portion has an inner cavity, and the battery pack is arranged in the inner cavity, wherein the battery containing portion is provided with a top opening.

[0007] Optionally, the battery pack is detachably installed in the battery containing portion.

[0008] Optionally, the battery containing portion includes a front floor and a seat frame left side panel, a seat frame right side panel, a seat frame front panel and a rear partition panel extending upward from the front floor.

[0009] Optionally, the battery pack housing further includes a front mounting beam for the battery pack and a rear mounting beam for the battery pack, wherein the front mounting beam for the battery pack and the rear mounting beam for the battery pack are connected to the left longitudinal beam and the right longitudinal beam of the vehicle, and the battery pack is fixedly mounted to the front mounting beam for the battery pack and the rear mounting beam for the battery pack.

[0010] Optionally, the battery pack includes at least one battery module and a battery pack shell having a battery pack shell inner cavity, and the at least one battery module is arranged in the battery pack shell inner cavity of the battery pack shell.

[0011] Optionally, at least one spacer is disposed inside the battery pack shell, and the inner cavity of the battery pack shell is divided into two or more accommodating spaces by the at least one spacer, wherein each accommodating space accommodates a battery module.

[0012] Optionally, the battery containing portion further includes an upper portion of a seat frame rear reinforcement beam and a lower portion of a seat frame rear reinforcement beam.

[0013] Optionally, the top opening of the battery housing portion is covered by a seat of the vehicle.

[0014] Optionally, the left side panel of the seat frame, the right side panel of the seat frame, the front panel of the seat frame and the rear partition are integrally formed.

[0015] According to another aspect of the present invention, a vehicle is provided, comprising any one of the above-mentioned battery systems.

[0016] According to the solution of the present invention, the space below the seat can be reasonably utilized, and a reliable battery pack installation structure can be formed by arranging the battery pack in the area surrounded by the seat mounting structure and the floor. In addition, the user does not need to bend down when taking and placing the battery, which is ergonomically designed and suitable for high-frequency battery replacement scenarios. Moreover, the battery system of the present invention avoids the situation in which the convenience of getting on and off the vehicle is reduced due to the raised door sill side beam in the traditional design. In addition, since the battery pack housing portion in the battery system of the present invention is itself configured as a sealed structure, there is no need to rely on the structure of the battery pack itself for sealing, which avoids the aging of the battery pack and the influence of the environment, and improves the safety and reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Features, advantages, and exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals refer to like elements, and in which:

[0018] Figure 1 is a bottom-up structural schematic diagram of a battery system according to an embodiment of the prior art;

[0019] Figure 2 yes Figure 1 A schematic cross-sectional view of the battery system shown in FIG. 1 taken along line AA;

[0020] Figure 3 is a schematic diagram of removing a battery module from a battery system according to another embodiment of the prior art;

[0021] Figure 4 is a schematic diagram of a top view of a battery system according to an embodiment of the present invention;

[0022] Figure 5 yes Figure 4 A bottom-up structural schematic diagram of the battery system shown in ;

[0023] Figure 6 yes Figure 4 A schematic cross-sectional view of the battery system shown in FIG. 1 taken along line BB;

[0024] Figure 7 yes Figure 4 A schematic cross-sectional view of the battery system shown in FIG. 1 taken along line CC;

[0025] Figure 8 yes Figure 4 A schematic perspective view of a battery system shown in ;

[0026] Fig. 9 yes Figure 4 Another schematic perspective view of the battery system shown in , wherein the battery module is removed; and

[0027] Fig.10 yes Figure 4 An exploded perspective schematic diagram of a battery pack of a battery system shown in FIG.

[0028] The reference numerals are as follows:

[0029] 1. Battery unit; 101. Battery unit storage; 100', battery system; 100", battery system; 3. Floor; 2. Longitudinal beam; 102. Battery unit attachment; 7. Connecting bracket; 6. Battery unit box; 103. Side opening; 5. Battery module; 104. Opening mechanism; 4. Door sill side beam; 200, Ground; 100, Battery system; 110, Battery pack storage; 30, Battery pack; 113, Inner cavity; 112, Top opening; 1 3. Front floor; 17. Left side panel of seat frame; 18. Right side panel of seat frame; 19. Front panel of seat frame; 16. Rear partition; 111. Bolts; 14. Front mounting beam of battery pack; 15. Rear mounting beam of battery pack; 11. Left longitudinal beam; 12. Right longitudinal beam; 41. Seat; 32. Battery module; 31. Battery pack housing; 33. Spacer; 34. Accommodation space; 20. Upper part of rear reinforcing beam of seat frame; 21. Lower part of rear reinforcing beam of seat frame; 16. Rear partition. DETAILED DESCRIPTION

[0030] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear to indicate the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and do 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 limiting the present application.

[0031] The exemplary embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings. The description of the exemplary embodiments is merely exemplary and is by no means a limitation of the present invention and its application or usage. Moreover, the sizes and proportions of the components in the drawings are merely schematic and do not strictly correspond to actual products.

[0032] like Figure 1 As shown, a battery system 100' according to an embodiment of the prior art includes a battery unit 1 and a battery unit storage portion 101, wherein the battery unit storage portion 101 is disposed at the bottom of a vehicle to which the battery system 100' is attached, and includes a floor 3 and a longitudinal beam 2. Specifically, as Figure 1 to Figure 2 As shown, a floor 3 is provided at the bottom of the vehicle, and longitudinal beams 2 are provided below the floor 3 on both sides of the battery unit 1 in the Y direction, and the battery unit 1 is provided with a battery unit attachment portion 102, which is detachably attached to the longitudinal beam 2, for example, by bolts, so as to attach the battery unit 1 to the longitudinal beam 2. This battery unit adopts an integral design. During the installation process, the battery unit 1 needs to be positioned from bottom to top by a lifting device and fixedly installed on the longitudinal beam 2 of the battery unit storage portion 101 by the battery unit attachment portion 102. When the battery needs to be replaced, the battery unit 1 usually needs to be disassembled as a whole, such as Figure 2 As shown, the operation of replacing the battery cell 1 usually includes first moving the battery cell 1 downward in the Z direction, and then moving the battery cell 1 out from under the vehicle in the Y direction. However, due to the large overall weight of the battery cell 1, it is difficult for a single person to complete the disassembly and assembly by hand, and the auxiliary equipment of the battery swap station must be used for operation. In addition, this type of battery cell usually relies on its own sealing structure to achieve sealing performance. However, over time, due to factors such as material aging and environmental influences, the sealing performance may gradually decline, thereby affecting the safety and reliability of the battery.

[0033] Figure 3 A battery system 100 of another embodiment of the prior art is shown. Figure 1The battery system 100' shown in FIG. Figure 3 The battery system 100" shown in is also provided with a connecting bracket 7, which is arranged below the longitudinal beam 2, and the battery unit is attached to the longitudinal beam 2 via the connecting bracket 7. In addition, in this embodiment, the battery unit includes a battery cell box 6 and at least one battery module 5, and the battery cell box 6 is provided with a side opening 103, so that the battery module 5 can be removed from the battery cell box 6 and the battery module 5 can be moved into the battery cell box 6 through the side opening 103 of the battery cell box 6, and the battery module 5 in the battery cell box 6 can be closed by closing the opening mechanism 104 provided with a rubber strip. Compared with the battery system 100", Figure 1 The battery unit shown in the figure needs to be disassembled as a whole, and supports the individual replacement of each battery module 5, making the maintenance and replacement operations more flexible and convenient. However, there are still many problems in the battery replacement operation of the battery system 100". For example, since the battery unit is located at the bottom of the vehicle body, the distance H2 from the fully loaded ground 200 is only 120mm, so the operator needs to squat when replacing the battery, and the battery unit is easily dropped due to gravity, which poses a safety hazard; frequent battery replacement operations and material aging will affect the sealing performance of the battery unit; at the same time, since the battery module 5 is pushed and pulled in the Y direction, the longitudinal beam 2 and the vehicle threshold side beam 4 are required not to block its movement path, which inevitably requires raising the longitudinal beam 2 and the vehicle threshold side beam 4 in the Z direction to ensure that the gap H4 between the battery module 5 and the vehicle threshold side beam 4 is not less than 10mm, and this adjustment will inevitably cause the distance from the vehicle threshold to the fully loaded ground 200 to be increased by Figure 2 The H1 shown is increased to H3, which is an increase of about 60 mm, thus affecting the convenience of users getting on and off the vehicle when using the vehicle; in addition, as mentioned above, due to the need to set a connecting bracket 7 and a battery cell box 6 with sufficient strength to accommodate and support the battery module 5, this increases the weight of the vehicle body, and also increases the complexity and overall weight of the battery cell.

[0034] In view of the above-mentioned deficiencies of the battery system in the prior art, the present invention provides an improved battery system for a vehicle and a vehicle having the battery system.

[0035] In a first aspect of the present invention, an improved battery system 100 for a vehicle is provided. Figures 4 to 10 As shown, the battery system 100 includes a battery pack 30 and a battery containing portion 110. At least a portion of the battery containing portion 110 can be made of a metal material with good mechanical properties (such as iron, steel, etc.). At least a portion of the battery containing portion 110 can also be made of other hard materials with excellent mechanical properties (such as carbon fiber materials). Designed in this way, the battery containing portion 110 can provide the mechanical strength required to support the battery pack 30 inside the battery containing portion 110.

[0036] like Figures 4 to 9 As shown, the battery containing portion 110 is generally box-shaped and has an inner cavity 113, and the battery pack 30 is disposed in the inner cavity 113, wherein the battery containing portion 110 is provided with a top opening 112, so that the battery pack 30 can be placed in the battery containing portion 110 or removed from the battery containing portion 110 via the top opening 112 in the Z direction. Of course, in other embodiments of the present invention not shown, the battery containing portion 110 can also be any other suitable shape.

[0037] like Figure 6 and Figure 7 As shown, the height H2 of the battery containing part 110 from the ground is 120mm, so that the battery pick-up height H6 is about 725mm. This height H6 does not require the user to bend down when picking up and placing the battery, which conforms to the ergonomic design, so that the user can comfortably and efficiently replace the battery pack 30, which is particularly suitable for scenes where high-frequency battery replacement is required, such as couriers. In addition, compared with the conventional design of the battery system arranged under the longitudinal beam, the battery pack 30 of the present invention is located inside the vehicle body, and the battery replacement operation adopts the Z direction loading and unloading, avoiding the restriction of the vehicle body structure in the Y direction, thereby avoiding the situation in the traditional design where the door sill side beam 4 is raised to reduce the convenience of getting on and off the vehicle. In addition, the battery pack is arranged inside the battery containing part 110 of the vehicle body. Since the battery containing part 110 has formed a sealed structure, it does not need to rely on the sealing design of the battery pack itself, thereby avoiding the problem of reduced sealing performance caused by factors such as material aging and environmental impact, and improving the safety and reliability of battery use.

[0038] like Figures 4 to 9As shown, the battery containing part 110 includes a front floor 13 and a seat frame left side plate 17, a seat frame right side plate 18, a seat frame front plate 19 and a rear partition 16 extending upward from the front floor 13. Specifically, in this embodiment, the front floor 13, the seat frame left side plate 17, the seat frame right side plate 18, the seat frame front plate 19 and the rear partition 16 together enclose an inner cavity 113 with a top opening 112 for accommodating the battery pack 30, and the top opening 112 is at a distance H5 from the fully loaded ground 200. Optionally, the seat frame left side plate 17, the seat frame right side plate 18, the seat frame front plate 19 and the rear partition 16 are welded to form a box-shaped structure with a top opening 112, which provides sufficient space inside for accommodating and installing the battery pack 30. The structure is completely closed relative to the outside, so that the overall strength and sealing performance of the battery containing part 110 are effectively improved without adding an additional sealing structure, and thus no special sealing management is required for the battery pack that needs to be replaced, that is, the sealing of the vehicle body and the battery pack can be satisfied. Alternatively, the left seat frame plate 17, the right seat frame plate 18, and the front seat frame plate 19 can also be manufactured in an integrated manner and then connected to the rear partition plate 16 by welding. In addition, the battery housing portion 110 is designed as a part of the vehicle seat, which reduces the total weight of the vehicle, thereby reducing the production cost, avoiding the design of adding a connecting bracket 7 and thickening the battery unit box 6 to support the battery pack in the traditional design, and improving the lightweight level of the vehicle.

[0039] Optionally, the battery pack 30 is detachably mounted in the battery containing portion 110. Specifically, in this embodiment, the battery pack 30 is detachably fixed on the front floor 13 of the battery containing portion 110 by four bolts 111 to limit the movement of the battery pack 30 relative to the battery containing portion 110. Of course, in other embodiments not shown in the present invention, the battery pack 30 can also be installed in the battery containing portion 110 in other detachable ways.

[0040] To enhance the installation strength, the battery pack receiving portion 110 further includes a battery pack front mounting crossbeam 14 and a battery pack rear mounting crossbeam 15, which are connected to the left longitudinal beam 11 and the right longitudinal beam 12 of the vehicle, and the battery pack 30 is fixedly mounted to the battery pack front mounting crossbeam 14 and the battery pack rear mounting crossbeam 15. Specifically, as Figures 5 and 6 and Fig. 9As shown, the front cross beam 14 and the rear cross beam 15 are arranged at the lower part of the front floor 13, and the two ends of the front cross beam 14 and the rear cross beam 15 are connected to the left longitudinal beam 11 and the right longitudinal beam 12 of the vehicle body, and the middle parts of the front cross beam 14 and the rear cross beam 15 are connected to the front floor 13 by welding or threaded fasteners, so that a stable frame-shaped connection structure is formed between the front cross beam 14 and the rear cross beam 15, the left longitudinal beam 11 and the right longitudinal beam 12, and the frame-shaped connection structure is firmly connected to the front floor 13, thereby providing a solid installation foundation for the battery pack. Figure 5 and Figure 6 As shown in more detail, the battery pack 30 is also fixed to the front mounting beam 14 and the rear mounting beam 15 by bolts 111. When the battery pack 30 is subjected to impact load, the front mounting beam 14 and the rear mounting beam 15 can effectively transfer the load to the left longitudinal beam 11 and the right longitudinal beam 12, thereby significantly improving the strength and fatigue resistance of the mounting structure, and ensuring the safety and reliability of the battery pack 30 in long-term use.

[0041] like Figure 6 and Figure 7 As shown, the top opening 112 of the battery pack receiving portion 110 is covered by the seat 41 of the vehicle, so that when the battery pack needs to be replaced, the cushion of the seat 41 can be Figure 6 The top opening 112 of the battery containing portion 110 is opened, and the battery pack 30 is conveniently taken in and out. Of course, in other embodiments of the present invention not shown, the top opening 112 of the battery containing portion 110 can also be opened by pivoting the seat cushion of the seat.

[0042] like Figures 4 to 10 As shown, the battery pack 30 includes at least one battery module 32 and a battery pack shell 31 having a battery module inner cavity, and at least one battery module 32 is arranged in the battery module inner cavity of the battery pack shell 31. Specifically, in the present embodiment, the battery pack 30 includes 1 battery pack shell 31 and 4 battery modules 32, wherein each battery module 32 is an independent component, which can be disassembled and assembled individually, and is equipped with a separate handle to facilitate personnel extraction operations. The weight of each battery module is controlled below 15kg to ensure that a single person (such as a courier) can easily pick it up and put it, which greatly improves the convenience of battery replacement operations. Of course, in other embodiments not shown in the present invention, the number of battery modules 32 may be more than or less than 4, as long as it can provide sufficient battery energy for the vehicle.

[0043] like Figure 4 , Figures 6 to 8 and Fig.10As shown, at least one spacer 33 is disposed inside the battery pack housing 31, and the inner cavity of the battery module is divided into two or more accommodating spaces 34 by at least one spacer 33, wherein each accommodating space 34 accommodates a battery module 32. Arranged in this way, it is possible to: improve the structural strength and stability of the battery pack housing 31; isolate the battery module 32 to improve safety; and facilitate the placement and maintenance of the battery module 32. Optionally, at least one spacer 33 is integrally formed with the battery pack housing 31.

[0044] Optionally, the battery containing portion 110 further includes an upper portion 20 of a seat frame rear reinforcing beam and a lower portion 21 of a seat frame rear reinforcing beam, which are arranged at the upper portion of the battery containing portion 110. Specifically, in the present embodiment, the upper portion 20 of the seat frame rear reinforcing beam and the lower portion 21 of the seat frame rear reinforcing beam are arranged at the upper portion of the rear bulkhead 16 of the battery containing portion 110. The upper portion 20 of the seat frame rear reinforcing beam and the lower portion 21 of the seat frame rear reinforcing beam cooperate to form a reinforcing structure of the battery containing portion 110, providing a solid support for the battery containing portion 110, and can effectively improve the rigidity and strength of the battery containing portion 110 and the vehicle body as a whole.

[0045] In a second aspect of the present invention, a vehicle is further provided, the vehicle being provided with any one of the above-mentioned battery systems.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "an example", "some embodiments", or "preferred embodiment" 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0047] The embodiments of the present invention are described in detail above. However, aspects of the present invention are not limited to the above embodiments. Various modifications and substitutions may be applied to the above embodiments without departing from the scope of the present invention.

Claims

1. A battery system for a vehicle, characterized in that: The battery system comprises: Battery pack; and A battery containing portion has an inner cavity, and the battery pack is arranged in the inner cavity, wherein the battery containing portion is provided with a top opening.

2. The battery system according to claim 1, characterized in that: The battery pack is detachably installed in the battery containing portion.

3. The battery system according to claim 2, characterized in that: The battery containing portion includes a front floor and a seat frame left side plate, a seat frame right side plate, a seat frame front plate and a rear partition plate extending upward from the front floor.

4. The battery system according to claim 3, characterized in that: The battery pack housing also includes a front mounting beam for the battery pack and a rear mounting beam for the battery pack, wherein the front mounting beam for the battery pack and the rear mounting beam for the battery pack are connected to the left longitudinal beam and the right longitudinal beam of the vehicle, and the battery pack is fixedly mounted to the front mounting beam for the battery pack and the rear mounting beam for the battery pack.

5. The battery system according to any one of claims 1 to 4, characterized in that: The battery pack includes at least one battery module and a battery pack case having a battery pack case inner cavity, and the at least one battery module is disposed in the battery pack case inner cavity of the battery pack case.

6. The battery system according to claim 5, characterized in that: At least one spacer is disposed inside the battery pack shell, and the inner cavity of the battery pack shell is divided into two or more accommodating spaces by the at least one spacer, wherein each accommodating space accommodates a battery module.

7. The battery system according to any one of claims 1 to 4, characterized in that: The battery containing portion also includes an upper portion of a seat frame rear reinforcement beam and a lower portion of a seat frame rear reinforcement beam.

8. The battery system according to any one of claims 1 to 4, characterized in that: The top opening of the battery accommodation portion is covered by a seat of the vehicle.

9. The battery system according to claim 3, characterized in that: The left side plate of the seat frame, the right side plate of the seat frame, the front plate of the seat frame and the rear partition plate are integrally formed.

10. A vehicle, characterized in that: The vehicle includes the battery system according to any one of claims 1 to 9.

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