Battery pack and vehicle

Abstract

The battery pack comprises a box body, a cover plate, a supporting beam, a battery pack and a hoisting structure, the upper portion of the box body is provided with an opening, the cover plate covers the opening of the box body, the supporting beam is horizontally arranged in the box body, and the two ends of the supporting beam are correspondingly and fixedly connected with the two opposite inner side walls of the box body. Battery packs are arranged on the bottom plate in the box body and located on the two sides of the supporting beam, the hoisting structure comprises a hoisting cylinder, the hoisting cylinder penetrates through the cover plate and the bottom plate of the box body in the vertical direction, the upper end and the lower end of the hoisting cylinder are correspondingly connected with the cover plate and the bottom plate of the box body, and a limiting part is arranged in the area, located in the box body, of the outer side of the hoisting cylinder; the limiting part is supported at the bottom of the supporting beam, extends in the horizontal direction in the direction away from the hoisting cylinder and exceeds the side surface, facing the battery pack, of the supporting beam. According to the utility model, the stability of the battery pack after installation can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery pack and vehicle. BACKGROUND

[0002] The battery pack of electric automobile is usually fixed under the automobile chassis in the way of hoisting, in order to realize the hoisting of battery pack, the hoisting point structure needs to be arranged on the battery pack.

[0003] In the conventional technology, the hoisting point structure includes a hoisting cylinder, the hoisting cylinder penetrates the battery pack along the vertical direction, and the hoisting cylinder penetrates the support beam in the battery pack, and the upper end and the lower end of the hoisting cylinder are fixedly connected with the top and the bottom of the battery pack.

[0004] When hoisting the battery pack, the fastener penetrates the hoisting cylinder, and then is locked under the chassis of the automobile, thereby completing the hoisting of the battery pack, so that the force is mainly concentrated at the position where the hoisting cylinder and the battery pack are connected.

[0005] If the force is too concentrated, it is not conducive to the stability of the position of the battery pack. UTILITY MODEL CONTENTS

[0006] The primary object of the utility model is to provide a battery pack to ensure the stability of the installed battery pack.

[0007] Another object of the utility model is to provide a vehicle using the above-mentioned battery pack.

[0008] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0009] A battery pack, comprising a box body, a cover plate, a support beam, a battery pack and a hoisting structure, the upper part of the box body is provided with an opening, the cover plate is arranged on the opening of the box body, the support beam is horizontally arranged in the box body, the two ends of the support beam are fixedly connected with the two opposite inner side walls of the box body, the bottom plate in the box body and located on the two sides of the support beam is provided with the battery pack, the hoisting structure comprises a hoisting cylinder, the hoisting cylinder penetrates the cover plate and the bottom plate of the box body along the vertical direction, and the upper end and the lower end of the hoisting cylinder are connected with the cover plate and the bottom plate of the box body, the outer side of the hoisting cylinder and the area in the box body are provided with a limiting part, the limiting part is supported on the bottom of the support beam, and the limiting part extends along the horizontal direction and away from the hoisting cylinder and exceeds the side surface of the support beam towards the battery pack.

[0010] The utility model also relates to a vehicle, comprising the battery pack.

[0011] Compared with the prior art, the battery pack of the utility model embodiment has the following beneficial effects:

[0012] In the utility model, when the battery pack is installed on the chassis of the vehicle, the hoisting cylinder is penetrated by the fastener, and then the fastener is locked on the chassis of the vehicle, so that the battery pack is hoisted on the chassis of the vehicle, since the hoisting cylinder penetrates the cover plate and the bottom plate of the box along the vertical direction, and the upper end and the lower end of the hoisting cylinder are connected with the cover plate and the bottom plate of the box, in addition, the limiting portion of the hoisting cylinder extending outward is supported on the bottom of the support beam, therefore, the force of hoisting the battery pack is mainly concentrated on the connecting place of the limiting portion of the hoisting cylinder and the support beam, and the connecting place of the hoisting cylinder and the bottom plate of the box, therefore, the limiting portion of the hoisting cylinder of the utility model extends in the direction away from the hoisting cylinder and exceeds the side of the battery pack towards the support beam, so that more area of the support beam is pressed on the limiting portion, the force of hoisting the battery pack is more uniform, so as to ensure the stability of hoisting the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the top view of the battery pack of the utility model embodiment;

[0014] Figure 2 is Figure 1 the sectional view of B-B in the utility model;

[0015] Figure 3 is Figure 2 the enlarged view of A in the utility model;

[0016] Figure 4 is the size relation schematic view of the limiting portion and the support beam of the utility model embodiment.

[0017] In the drawing, 1, the box;11, the bottom plate;2, the cover plate;3, the support beam;31, the reinforcing rib;32, the first cavity;4, the battery pack;5, the hoisting structure;51, the hoisting cylinder;52, the limiting portion;53, the connecting portion;6, the heat exchange plate;7, the partition plate;8, the locking nut. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model will be described in further detail in combination with the drawings and the embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0019] In the description of the utility model, it should be understood that the phrase "comprising" used in the utility model specification means that the features, integers, steps, operations, components and / or assemblies exist, but it does not exclude the existence or addition of one or more other features, integers, steps, operations, components, assemblies and / or their combinations. It should be understood that when we say that a component is "connected" to another component, it can be directly connected to the other component or there can be an intermediate component. The phrase "and / or" used herein includes all or any unit and all combinations of the associated listed items.

[0020] As Figures 1 to 4 The utility model relates to a kind of battery pack, including box 1, cover plate 2, support beam 3, battery group 4 and hoisting structure 5, the upper opening of the box 1 is provided, the cover plate 2 is covered in the opening of the box 1, the support beam 3 is horizontally arranged in the box 1, the two ends of the support beam 3 are fixedly connected with the two opposite inner side walls of the box 1, the bottom plate 11 in the box 1 and located at the two sides of the support beam 3 are equipped with the battery group 4, the hoisting structure 5 includes hoisting cylinder 51, the hoisting cylinder 51 is vertically through the cover plate 2 and the bottom plate 11 of the box 1, and the upper end and the lower end of the hoisting cylinder 51 are connected with the cover plate 2 and the bottom plate 11 of the box 1, the outer side of the hoisting cylinder 51 and the area in the box 1 is equipped with limiting portion 52, the limiting portion 52 is supported on the bottom of the support beam 3, the limiting portion 52 extends along the horizontal direction and in the direction away from the hoisting cylinder 51 and beyond the side of the support beam 3 towards the battery group 4.

[0021] In the utility model, when battery pack is installed in the chassis of vehicle, fastener is passed through hoisting cylinder 51, then fastener is locked on the chassis of vehicle, so as to hoist battery pack on the chassis of vehicle, since hoisting cylinder 51 is vertically through the cover plate 2 and the bottom plate 11 of the box 1, and the upper end and the lower end of the hoisting cylinder 51 are connected with the cover plate 2 and the bottom plate 11 of the box 1, in addition, the limiting portion 52 of hoisting cylinder 51 extending outward is supported on the bottom of the support beam 3, therefore, the force of hoisting battery pack is mainly concentrated in the connecting place of the limiting portion 52 of hoisting cylinder 51 and the support beam 3 and the connecting place of hoisting cylinder 51 and the bottom plate 11 of the box 1, therefore, the limiting portion 52 of the hoisting cylinder 51 of the utility model extends in the direction away from the hoisting cylinder 51 and beyond the side of the support beam 3 towards the battery group 4, so that more area of support beam 3 is pressed on limiting portion 52, so that the force of hoisting battery pack is more uniform, to ensure the stability of battery pack hoisting.

[0022] In the embodiment, the support beam 3 is provided with a plurality of reinforcing ribs 31, and the plurality of reinforcing ribs 31 form a plurality of first cavities 32 in the support beam 3, and the hoisting cylinder 51 is located in one of the first cavities 32, and there is a gap between the outer side of the hoisting cylinder 51 and the inner side of the first cavity 32.

[0023] That is, the support beam 3 is provided with the first cavity 32, so that the weight of the support beam 3 can be reduced, thereby reducing the weight of the battery pack, and the support beam 3 is provided with a plurality of reinforcing ribs 31, so that the structural strength of the support beam 3 can be ensured under the premise of reducing the weight of the support beam 3, thereby ensuring the stability of the hoisting of the battery pack.

[0024] In addition, since the through hole in the hoisting cylinder 51 is in communication with the outside, the heat dissipation effect of the single battery close to the support beam 3 in the battery pack 4 is better than that of the other single batteries, so that the temperature of the battery pack 4 is not uniform, thereby affecting the performance and service life of the battery pack. Therefore, there is a gap between the outer side of the hoisting cylinder 51 and the inner side of the first cavity 32, so as to play a certain heat insulation effect, reduce the heat dissipation efficiency of the single battery close to the support beam 3, and facilitate to ensure the uniform temperature of the battery pack.

[0025] In the embodiment, the battery pack further comprises a heat exchange plate 6, the heat exchange plate 6 is laid on the bottom plate 11 in the box body 1, and the battery pack 4 is pressed on the top surface of the heat exchange plate 6.

[0026] Due to the arrangement of the heat exchange plate 6, the battery pack 4 can dissipate heat through the heat exchange plate 6, so as to ensure the stability of the performance of the battery pack, and facilitate to make the temperature of the battery pack 4 more uniform.

[0027] In the embodiment, the battery pack further comprises a partition plate 7, the partition plate 7 is vertically arranged and pressed on the top surface of the heat exchange plate 6, and the partition plate 7 is arranged between the support beam 3 and the battery pack 4; specifically, the partition plate 7 has a certain heat insulation effect, so as to reduce the heat transfer between the single battery close to the support beam 3 of the battery pack 4 and the hoisting cylinder 51, thereby facilitating to make the temperature of the battery pack 4 more uniform.

[0028] Preferably, a buffer is arranged between the partition plate 7 and the battery pack 4, which can be foam or a buffer rubber layer. On one hand, the buffer has a heat insulation effect, and on the other hand, the battery pack 4 and the partition plate 7 can compress the buffer when the battery pack is assembled, and then the buffer is inserted into the box body 1, and then the buffer expands, so as to stabilize the battery pack 4 in the box body 1.

[0029] In the present embodiment, the limiting portion 52 extends away from the hoisting cylinder 51 and is supported on the bottom surface of the heat exchange plate 6, and the end of the limiting portion 52 away from the hoisting cylinder 51 extends beyond the partition plate 7 toward the side surface of the battery pack 4.

[0030] That is, the limiting portion 52 can continue to move away from the hoisting cylinder 51, and the end of the limiting portion 52 away from the hoisting cylinder 51 extends beyond the partition plate 7 in the horizontal direction toward the side surface of the battery pack 4, so as to increase the area of support, thereby facilitating more uniform hoisting force and ensuring the stability of hoisting of the battery pack.

[0031] Preferably, the end of the limiting portion 52 away from the hoisting cylinder 51 extends to the area directly below the battery pack 4.

[0032] That is, the limiting portion 52 can continue to move away from the hoisting cylinder 51, and the end of the limiting portion 52 away from the hoisting cylinder 51 extends to the area directly below the battery pack 4, so as to further facilitate more uniform force and ensure the stability of hoisting of the battery pack.

[0033] In the present embodiment, the limiting portion 52 has a width W in the horizontal direction and perpendicular to the length of the support beam 3, and the support beam 3 has a height h in the vertical direction, where 0.15≤W / h≤0.29, 15mm≤W≤20mm, and 70mm≤h≤95mm. Specifically, W can be 15.5mm, 16mm, 17mm, 18mm, 19mm, or 19.5mm; h can be 72mm, 74mm, 78mm, 80mm, 82mm, 85mm, 87mm, 89mm, 90mm, 92mm, 93mm, or 94mm; and W / h can be 0.17, 0.19, 0.2, 0.22, 0.24, 0.26, or 0.28.

[0034] Specifically, when the ratio of W / h is too small, the width of the limiting portion 52 is small, and the height of the support beam 3 is high. Since the limiting portion 52 directly bears the mounting force of the fastener, the small width of the limiting portion 52 is not conducive to force dispersion, and the excessive concentration of force can cause the components in the battery pack above the limiting portion 52 to be crushed. The high height of the support beam 3 can cause the center of gravity of the battery pack to be high, resulting in poor overall stability of the battery pack. When the ratio of W / h is too large, the width of the limiting portion 52 is large, so that the limiting portion 52 can disperse force to the components of the battery pack such as the support beam 3, the partition plate 7, and the battery pack 4, making the battery pack structure more stable. However, the height of the support beam 3 is low, and the lifting cylinder 51 cannot be completely hidden in the first cavity 32, which can affect the heat insulation between the lifting cylinder 51 and the battery pack 4, so that the temperature of the battery pack 4 cannot be uniform, and the performance and service life of the battery pack cannot be guaranteed. Therefore, 0.15≤W / h≤0.29 is maintained to ensure the stability of the battery pack while ensuring the performance and service life of the battery pack.

[0035] In the embodiment, the lifting structure 5 further comprises a locking nut 8. The lower end of the lifting cylinder 51 is provided with a connecting portion 53 which penetrates downward to the lower side of the box body 1. An external thread is formed on the outer side of the connecting portion 53. The locking nut 8 is threadedly connected to the outer side of the connecting portion 53, and abuts against the bottom surface outside the box body 1.

[0036] The locking nut 8 is threadedly connected to the outer side of the connecting portion 53 of the lifting cylinder 51, and abuts against the bottom surface outside the box body 1, so that the lifting cylinder 51 and the bottom plate 11 of the box body 1 are stably connected, which is conducive to ensuring the stability of the battery pack.

[0037] The utility model also relates to a vehicle comprising the battery pack.

[0038] The vehicle adopts the battery pack, so that the battery pack can be stably installed on the vehicle, thereby ensuring the normal use of the vehicle.

[0039] The above description is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, a number of improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection range of the utility model.

Claims

1. A battery pack, characterized by, The battery pack comprises a box, a cover plate, a support beam, a battery pack and a lifting structure. The box is provided with an upper opening. The cover plate is arranged on the opening of the box. The support beam is horizontally arranged in the box. The support beam is fixedly connected with the two opposite inner side walls of the box. The battery pack is arranged on the bottom plate in the box and located on both sides of the support beam. The lifting structure comprises a lifting cylinder. The lifting cylinder penetrates the cover plate and the bottom plate of the box in the vertical direction. The upper end and the lower end of the lifting cylinder are connected with the cover plate and the bottom plate of the box. The outer side of the lifting cylinder and the area in the box are provided with a limiting part. The limiting part is supported on the bottom of the support beam. The limiting part extends in the horizontal direction and away from the lifting cylinder and beyond the side surface of the battery pack.

2. The battery pack of claim 1, wherein, A plurality of reinforcing ribs are arranged in the support beam. A plurality of first cavities are formed in the support beam. The lifting cylinder is located in one of the first cavities. There is a gap between the outer side of the lifting cylinder and the inner side of the first cavity.

3. The battery pack of claim 1, wherein, A heat exchange plate is arranged on the bottom plate in the box. The battery pack is arranged on the top surface of the heat exchange plate.

4. The battery pack of claim 3, wherein, A partition plate is arranged vertically and on the top surface of the heat exchange plate. The partition plate is arranged between the support beam and the battery pack.

5. The battery pack of claim 4, wherein, A buffer is arranged between the partition plate and the battery pack.

6. The battery pack of claim 4, wherein, The limiting part extends away from the lifting cylinder and supports the bottom surface of the heat exchange plate. The end of the limiting part away from the lifting cylinder exceeds the side surface of the battery pack towards the battery pack.

7. The battery pack of claim 6, wherein, The end of the limiting part away from the lifting cylinder extends to the area directly below the battery pack.

8. The battery pack of claim 1, wherein, The width of the limiting part in the horizontal direction perpendicular to the length of the support beam is W mm. The height of the support beam in the vertical direction is h mm. 0.15≤W / h≤0.

29.

9. The battery pack of claim 1, wherein, The lifting structure further comprises a locking nut. The lower end of the lifting cylinder is provided with a connecting part. The connecting part penetrates downward to the lower side of the box. An external thread is arranged on the outer side of the connecting part. The locking nut is threadedly connected to the outer side of the connecting part. The locking nut abuts against the bottom surface outside the box.

10. A vehicle characterized by comprising: The battery pack comprises the battery pack according to any one of claims 1-9.

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