Battery pack for starting

Abstract

The utility model discloses a battery pack for starting. The battery pack comprises a box body, the battery module is arranged in the box body, the battery module comprises a plurality of battery cells which are sequentially stacked in the first direction, the large surface of one battery cell serves as a bottom supporting surface of the battery module, and the first direction is perpendicular to the large surfaces of the battery cells; the two adhesive layers are respectively arranged at the two ends of the battery module in the horizontal direction, and the two adhesive layers are connected with the inner side wall of the box body so as to be used for fixing the battery module in the box body. Thus, the overall space occupied by the battery pack for starting in the vertical direction can be effectively reduced, more importantly, the two adhesive layers are arranged at the two ends of the battery module in the second direction respectively, it can be guaranteed that the battery module is evenly stressed in the box body, and the overall impact resistance and vibration resistance of the battery pack for starting are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack for starting. Background Art

[0002] The installation position of the battery pack for starting in the whole vehicle results in insufficient installation space in the Z direction (i.e., the vertical direction), which will affect the design of the battery system. Therefore, while meeting the product strength and thermal runaway protection, it is necessary to ensure that the Z-direction dimension is small enough to meet the product installation; in order to effectively reduce the Z-direction dimension of most existing battery packs for starting, their battery modules are arranged in a lying position. However, when the battery modules are arranged in a lying position, there is a problem that the forces on them in the box are not consistent enough. Summary of the Utility Model

[0003] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a battery pack for starting, aiming to solve the problem that the forces on the battery module are not consistent enough in the box when the battery module is arranged in a lying position.

[0004] The technical solution adopted by the utility model to solve its problems is as follows:

[0005] A battery pack for starting, comprising: a box body; a battery module disposed in the box body, the battery module including a plurality of battery cells stacked in sequence along a first direction, the first direction being perpendicular to the large surface of the battery cell; two adhesive layers respectively disposed at both ends of the battery module in a second direction, the second direction being parallel to the large surface of the battery cell, and the two adhesive layers being connected to the inner side wall of the box body to fix the battery module in the box body.

[0006] According to some embodiments of the utility model, the adhesive layer is composed of structural adhesive.

[0007] According to some embodiments of the utility model, both ends of the battery module in the second direction are respectively a first end and a second end; one of the adhesive layers is disposed around the first end, and / or the other adhesive layer is disposed around the second end.

[0008] According to some embodiments of the utility model, the battery pack for starting further includes a glue blocking member, the battery module has a module outer side wall between the first end and the second end, the glue blocking member is disposed on the module outer side wall, and the glue blocking member can abut against the adhesive layer.

[0009] According to some embodiments of the utility model, the box body includes a box cover and a box main body, an installation opening is formed on one side of the box main body perpendicular to the second direction, the first end is close to the installation opening, the box cover covers the installation opening, the adhesive layer disposed at the first end is a head adhesive layer, and the glue blocking member abuts against the head adhesive layer.

[0010] According to some embodiments of the present invention, the adhesive layer disposed at the second end is a tail adhesive layer, and the tail adhesive layer includes a surrounding body and connecting ribs. The surrounding body is disposed around the second end, and the connecting ribs are connected to the inner side of the surrounding body and are connected to two adjacent battery cells.

[0011] According to some embodiments of the present invention, the glue blocking member is disposed around the outer sidewall of the module.

[0012] According to some embodiments of the present invention, a sealing ring is disposed at the connection between the box cover and the box body.

[0013] According to some embodiments of the present invention, the starting battery pack further includes a separator, and the separator is disposed between two adjacent battery cells.

[0014] According to some embodiments of the present invention, the starting battery pack further includes a buffer member. The battery module has an upper side and a lower side spaced apart in the first direction; the buffer member is disposed on the upper side and / or the lower side.

[0015] In summary, a starting battery pack provided by the present invention has at least the following technical effects:

[0016] The battery module formed by stacking a plurality of battery cells in sequence along the first direction is arranged in a lying manner in the box body. In this way, the overall space occupied by the starting battery pack in the vertical direction can be effectively reduced. Moreover, the two adhesive layers are respectively disposed at both ends of the battery module in the second direction, so that the force on the battery module in the box body can be ensured to be uniform, and the overall shock resistance and vibration resistance of the starting battery pack are greatly improved. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the starting battery pack according to an embodiment of the present invention;

[0018] Figure 2 is Figure 1 a schematic cross-sectional structural diagram taken along the A-A direction in

[0019] Figure 3 is an exploded structural diagram of the starting battery pack according to an embodiment of the present invention;

[0020] Figure 4 is an exploded structural diagram of the battery module according to an embodiment of the present invention

[0021] Among them, the meanings of the reference numerals are as follows:

[0022] 1. Box body; 11. Box cover; 12. Box main body; 121. Installation opening; 2. Battery module; 21. First end; 22. Second end; 23. Battery cell; 3. Adhesive layer; 31. Head adhesive layer; 32. Tail adhesive layer; 321. Surrounding body; 322. Connecting rib; 4. Glue blocking member; 5. Spacer; 6. Buffer member; 7. Sealing ring; 8. Tape. Detailed implementation mode

[0023] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Please refer to Figures 1 to 3 , the present invention discloses a battery pack for starting, including a box body 1, a battery module 2 and an adhesive layer 3; the battery module 2 is arranged in the box body 1, and the battery module 2 includes a plurality of battery cells 23 stacked in sequence along a first direction, wherein the first direction is perpendicular to the large surface of the battery cell 23 (reference can be made to Figure 2 the e1 direction in); two adhesive layers 3 are respectively arranged at both ends of the battery module 2 in a second direction (reference can be made to Figure 2 the e2 direction in), the second direction is parallel to the large surface of the battery cell 23, and the two adhesive layers 3 are connected to the inner side wall of the box body 1 to fix the battery module 2 in the box body 1; more specifically, in this embodiment, the large surface of the battery cell 23 is placed horizontally, the first direction is the vertical direction, and the second direction is the horizontal direction.

[0028] A battery pack for starting provided by the present utility model. A battery module 2 formed by stacking a plurality of battery cells 23 in sequence along a first direction is arranged in a lying manner in a box body 1. In this way, the overall space occupied by the battery pack for starting in the vertical direction can be effectively reduced. Moreover, two adhesive layers 3 are respectively arranged at both ends of the battery module 2 in a second direction, so that the force on the battery module 2 in the box body 1 can be ensured to be uniform, and the overall shock resistance and vibration resistance of the battery pack for starting are greatly improved.

[0029] As Figure 3 shown, specifically, in this embodiment, the two ends of the battery module 2 in the second direction are respectively a first end 21 and a second end 22. In order to further improve the connection stability between the battery module 2 and the box body 1, one adhesive layer 3 is arranged around the first end 21, and the other adhesive layer 3 is also arranged around the second end 22. Preferably, in this embodiment, the adhesive layer 3 is composed of structural adhesive, and the structural adhesive has the advantages of high strength, anti-peeling, impact resistance, and simple construction process. It should be noted that in some other embodiments, the adhesive layer 3 can also be but not limited to being composed of hot melt adhesive or marble adhesive, and can be selected according to actual needs.

[0030] As Figure 3 and Figure 4 shown, further, in this embodiment, the battery pack for starting further includes a glue blocking member 4. The battery module 2 has a module outer side wall located between the first end 21 and the second end 22. The glue blocking member 4 is arranged on the module outer side wall of the battery module 2, and the glue blocking member 4 can be in contact with the adhesive layer 3. In this way, the glue blocking member 4 can effectively prevent the uncurred glue from flowing into the interior of the battery module 2, and the working safety and working stability of the battery module 2 are ensured and improved. Further, in order to improve the blocking effect on the uncurred glue, the glue blocking member 4 is arranged around the module outer side wall.

[0031] Preferably, in this embodiment set, the glue blocking member 4 is a glue blocking foam, and the glue blocking foam has the advantages of light weight, convenient use, ultra-thin volume, and reliable performance. It should be noted that in some other embodiments, the glue blocking member 4 can also be but not limited to being a glue blocking plastic or a glue blocking rubber ring, etc.

[0032] As Figure 2 and Figure 3As shown, specifically, in this embodiment, the box body 1 includes a box cover 11 and a box main body 12. An installation opening 121 is formed on one side of the box main body 12 perpendicular to the second direction. The first end 21 is close to the installation opening 121. The box cover 11 covers the installation opening 121. The adhesive layer 3 provided at the first end 21 is the head adhesive layer 31, and the adhesive layer provided at the second end 22 is the tail adhesive layer 32. The glue blocking member 4 abuts against the head adhesive layer 31. Thus, when assembling the starting battery pack, the box body 1 can be arranged vertically (i.e., placed vertically) first. At this time, the installation opening 121 of the box body 1 faces away from the ground. Then, the tail adhesive layer 32 can be injected into an inner side of the box body 1 far from the installation opening 121. Subsequently, the battery module 2 can be loaded into the box body 1 from the installation opening 121 and the second end 22 of the battery module 2 can be in close contact with the tail adhesive layer 32. Then, the head adhesive layer 31 can be injected between the first end 21 of the battery module 2 and the box body 1. At this time, the glue blocking member 4 can effectively prevent the un-solidified colloid from flowing into the battery module 2 from top to bottom, thereby ensuring the safety performance of the battery module 2. More specifically, after the two adhesive layers 3 are solidified, the box cover 11 can be covered on the installation opening 121 and the box body 1 can be arranged horizontally (i.e., placed horizontally), that is, the large surface of the battery cell 23 is placed horizontally.

[0033] Preferably, in this embodiment, the tail adhesive layer 32 includes a surrounding body 321 and connecting ribs 322. The surrounding body 321 surrounds the second end 22 to improve the connection stability between the box body 1 and the second end 22. The connecting ribs 322 are connected to the inner side of the surrounding body 321 and are connected to adjacent two battery cells 23 to improve the connection stability between the adjacent two battery cells 23.

[0034] As Figure 4 shown, preferably, in this embodiment, the starting battery pack further includes an isolation sheet 5. The isolation sheet 5 is arranged between adjacent two battery cells 23. Thus, the problem of short circuit between adjacent two battery cells 23 can be avoided. More preferably, in this embodiment, both sides of the isolation sheet 5 are adhesively backed, so that the battery module 2 is not easily scattered.

[0035] As Figure 3 and Figure 4 shown, further, in this embodiment, the starting battery pack further includes a tape 8. The tape 8 is wound around the outer side wall of the battery module 2 to ensure the structural stability of the battery module 2, thereby further avoiding the problem of the battery module 2 being scattered.

[0036] As Figure 3 and Figure 4 shown, preferably, in this embodiment, the starting battery pack further includes a buffer member 6. The outer side wall of the module includes an upper side surface and a lower side surface spaced apart in the first direction. The buffer members 6 are respectively arranged on the upper side surface and the lower side surface. The buffer members 6 can play a buffering role and can absorb the dimensional changes caused by the product dimensional tolerance and the expansion of the battery cell 23.

[0037] It should be noted that in some other embodiments, the buffer member 6 may also be provided only on the upper side or only on the lower side, and can be selected according to actual requirements.

[0038] Preferably, in this embodiment, in order to improve the sealing performance between the lid 11 and the box body 12, a sealing ring 7 is provided at the connection between the lid and the box body 12.

[0039] Specifically, in this embodiment, the box body 12 has an upper side wall parallel to the second direction. Preferably, in this embodiment, in order to improve the convenience of use of the starting battery pack, a handle is provided on the upper side wall.

[0040] In summary, a starting battery pack disclosed by the present utility model can at least bring the following beneficial technical effects:

[0041] 1) The battery module 2 formed by stacking a plurality of battery cells 23 in sequence along the first direction is arranged in a lying manner in the box body 1, which can effectively reduce the overall space occupied by the starting battery pack in the vertical direction;

[0042] 2) The two adhesive layers 3 are respectively arranged at both ends of the battery module 2 in the second direction, so as to ensure uniform stress of the battery module 2 in the box body 1, and the overall impact resistance and vibration resistance of the starting battery pack are greatly improved;

[0043] 3) The glue blocking member 4 is located between the two adhesive layers 3. The glue blocking member 4 can be abutted against the adhesive layer 3, and the glue blocking member 4 can effectively prevent the uncurred glue from flowing into the interior of the battery module 2;

[0044] 4) The buffer member 6 is arranged on the upper side and the lower side of the battery module 2. The buffer member 6 can play a buffering role and can absorb the dimensional changes caused by product dimensional tolerances and the expansion of the battery cells 23.

[0045] The technical means disclosed by the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, and also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and retouches can be made, and these improvements and retouches are also regarded as the protection scope of the present utility model.

Claims

1. A battery pack for starting, characterized in that, Comprising: A box body (1); A battery module (2), disposed within the box body (1), the battery module (2) including a plurality of battery cells (23) stacked in sequence along a first direction, the first direction being perpendicular to the major surface of the battery cells (23); Two adhesive layers (3), respectively disposed at two ends of the battery module (2) in a second direction, the second direction being parallel to the major surface of the battery cells (23), and the two adhesive layers (3) being connected to the inner sidewall of the box body (1) for fixing the battery module (2) within the box body (1).

2. The starting battery pack according to claim 1, characterized in that, The adhesive layer (3) is composed of structural adhesive.

3. The starting battery pack according to claim 1, characterized in that, The two ends of the battery module (2) in the second direction are respectively a first end (21) and a second end (22); one of the adhesive layers (3) is disposed around the first end (21), and / or the other adhesive layer (3) is disposed around the second end (22).

4. The starting battery pack according to claim 3, characterized in that, The starting battery pack further includes a glue-blocking member (4), the battery module (2) having a module outer sidewall located between the first end (21) and the second end (22), the glue-blocking member (4) being disposed on the module outer sidewall, and the glue-blocking member (4) being capable of abutting against the adhesive layer (3).

5. The starting battery pack according to claim 4, wherein, The box body (1) includes a box cover (11) and a box main body (12), an installation opening (121) being formed on a side of the box main body (12) perpendicular to the second direction, the first end (21) being close to the installation opening (121), the box cover (11) covering the installation opening (121), the adhesive layer (3) disposed at the first end (21) being a head adhesive layer (31), and the glue-blocking member (4) abutting against the head adhesive layer (31).

6. The starting battery pack according to claim 5, characterized in that, The adhesive layer (3) disposed at the second end (22) is a tail adhesive layer (32), the tail adhesive layer (32) including a surrounding body (321) and connecting ribs (322), the surrounding body (321) being disposed around the second end (22), and the connecting ribs (322) being connected to the inner side of the surrounding body (321) and connected to two adjacent battery cells (23).

7. The starting battery pack according to claim 5, characterized in that, The glue-blocking member (4) is disposed around the module outer sidewall.

8. A starting battery pack according to claim 5, characterized in that, A sealing ring (7) is disposed at the connection between the box cover (11) and the box main body (12).

9. A starting battery pack according to any one of claims 1-8, characterized in that, The starting battery pack further includes a separator (5), the separator (5) being disposed between two adjacent battery cells (23).

10. A starting battery pack according to any one of claims 1-8, characterized in that, The starting battery pack further includes a buffer member (6), the battery module (2) having an upper side and a lower side spaced apart in the first direction; the buffer member (6) is disposed on the upper side and / or the lower side.

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