KR102587165B1 - Battery pack and vehicle comprising the battery pack - Google Patents

Abstract

A battery pack according to an embodiment of the present invention includes at least one battery module including at least one battery cell, a pack case packaging the at least one battery module, protruding out of the pack case, and electrically connected to the at least one battery module. It covers a pair of terminal terminals connected to and at least one of the pair of terminal terminals, and includes a terminal cap that is snap-coupled and detachable from the pack case.

Description

Battery pack and vehicle including such battery pack {BATTERY PACK AND VEHICLE COMPRISING THE BATTERY PACK}

The present invention relates to a battery pack and a vehicle including such a battery pack.

Secondary batteries, which are easy to apply depending on the product group and have electrical characteristics such as high energy density, are used not only in portable devices but also in electric vehicles (EV, Electric Vehicle) or hybrid vehicles (HEV, Hybrid Electric Vehicle) that are driven by an electrical drive source. It is universally applied. These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency, not only because they have the primary advantage of being able to dramatically reduce the use of fossil fuels, but also because they do not generate any by-products due to energy use.

Types of secondary batteries currently widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, and nickel zinc batteries. The operating voltage of these unit secondary battery cells, that is, unit battery cells, is approximately 2.5V to 4.2V. Therefore, when a higher output voltage is required, a battery pack is formed by connecting a plurality of battery cells in series. Additionally, a battery pack may be constructed by connecting multiple battery cells in parallel depending on the charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack can be set in various ways depending on the required output voltage or charge/discharge capacity.

Meanwhile, when configuring a battery pack by connecting a plurality of battery cells in series/parallel, a battery module consisting of at least one battery cell is first constructed, and other components are added using this at least one battery module to build the battery pack. This method of configuring is common.

In such a conventional battery pack, a pair of terminal terminals protrude to the outside for connection to an external power source. Due to this structure, there is a problem that a short circuit may occur due to contact between externally exposed terminal terminals and external metal objects when transporting or moving the battery pack. In a conventional battery pack, a terminal cap covering the terminal terminals is installed to prevent such a short circuit.

The structure of this terminal cap is designed in consideration of the fact that short-circuit problems between terminal terminals with external metal objects, etc. generally occur when the battery pack is moved rather than when the battery pack is fixed, and the connection between the terminal terminal and external power source, etc. do.

Therefore, there is a need to find a way to provide a battery pack with a terminal cap structure having a simpler and more efficient structure and a vehicle including such a battery pack.

Accordingly, an object of the present invention is to provide a battery pack having a terminal cap structure with a simpler and more efficient structure and a vehicle including such a battery pack.

In order to solve the above object, the present invention provides a battery pack, comprising: at least one battery module including at least one battery cell; a pack case packaging the at least one battery module; a pair of terminal terminals protruding out of the pack case and electrically connected to the at least one battery module; and a terminal cap that covers at least one of the pair of terminal terminals and is detachably snap-coupled with the pack case.

The terminal cap includes: a first cap plate covering an upper portion of at least one terminal terminal; and a second cap plate extending from the first cap plate and covering one side portion of the at least one terminal terminal, wherein at least one of the first cap plate and the second cap plate is in the pack case. and can be detachably snap coupled.

The second cap plate may be bent downward from the first cap plate and may be detachably snap-coupled with the pack case.

At least one fixing hook protrudes from the pack case, and the second cap plate may be provided with a hook coupling groove that is detachably snap-coupled with the fixing hook.

At least one cap fixing rib may protrude from the pack case, and the first cap plate may be provided with a rib insertion groove into which the at least one cap fixing rib is inserted.

The pack case includes a case body accommodating the at least one battery module; and a case cover coupled to the case body to package the at least one battery module, and through which the pair of terminal terminals are mounted, wherein the terminal cap may be detachably snap-coupled with the case cover. there is.

The case body and the case cover may be laser welded along their mutual edges.

The case body may be made of a laser-absorbing plastic material, and the case cover may be made of a laser-transmissive plastic material.

The edge of the case cover may surround the edge of the case body.

At least one flow prevention rib may protrude from the inner surface of the case cover, preventing movement of the at least one battery module.

The at least one anti-flow rib may be disposed between the at least one battery module and an edge of the case body.

At least one dispersion partition may be provided on the upper surface of the case cover to disperse the liquid to prevent the liquid from pooling.

The distribution partition walls are provided in plural pieces, and the plurality of distribution partition walls are formed long along the longitudinal direction of the case cover, and may become shorter toward the edge of the case cover.

Additionally, the present invention provides a vehicle, characterized in that it includes at least one battery pack according to the above-described embodiment.

According to the various embodiments described above, a battery pack having a terminal cap structure with a simpler and more efficient structure and a vehicle including such a battery pack can be provided.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described later, so the present invention includes the matters described in such drawings. It should not be interpreted as limited to only .
1 is a diagram for explaining a battery pack according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the battery pack of FIG. 1.
FIG. 3 is a perspective view of the battery module of the battery pack of FIG. 2.
FIGS. 4 and 5 are diagrams for explaining the cell cartridge assembly of the battery module of FIG. 3.
FIG. 6 is a diagram for explaining the end plate assembly of the battery module of FIG. 3.
FIGS. 7 to 9 are diagrams for explaining the combination of the end plate assembly and the cell cartridge assembly of FIG. 6.
FIGS. 10 and 11 are diagrams for explaining the assembly of the pack case of the battery pack of FIG. 2.
FIGS. 12 and 13 are diagrams for explaining the terminal cap fixing structure of the battery pack of FIG. 2.

The present invention will become more apparent by detailed description of preferred embodiments of the present invention with reference to the accompanying drawings. The embodiments described herein are shown as examples to aid understanding of the invention, and it should be understood that the present invention can be implemented with various modifications different from the embodiments described herein. Additionally, in order to aid understanding of the invention, the attached drawings are not drawn to actual scale and the dimensions of some components may be exaggerated.

FIG. 1 is a diagram for explaining a battery pack according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the battery pack of FIG. 1.

Referring to FIGS. 1 and 2 , the battery pack 1 may be provided as a fuel source for a vehicle. For example, the battery pack 1 may be installed in various vehicles such as electric vehicles, hybrid vehicles, plug-in hybrid vehicles, and other vehicles that can use the battery pack 1 as a fuel source.

In addition, of course, the battery pack 1 may be installed in other devices, instruments, and facilities other than the automobile, such as an energy storage system that uses battery cells as secondary batteries.

The battery pack 1 may include a battery module 10, a BMS module 50, a heat sink 60, a pack case 70, and a pair of terminal terminals 80.

The battery module 10 is made up of an assembly of important components that make up the battery pack 1. The battery module 10 may be provided in at least one or more units.

The battery module 10 will be examined in more detail with reference to FIGS. 3 to 9 below.

Figure 3 is a perspective view of the battery module of the battery pack of Figure 2, Figures 4 and 5 are diagrams for explaining the cell cartridge assembly of the battery module of Figure 3, and Figure 6 is an end plate assembly of the battery module of Figure 3. These are drawings for explanation, and FIGS. 7 to 9 are drawings for explaining the combination of the end plate assembly and the cell cartridge assembly of FIG. 6.

Referring to FIGS. 3 to 9 , the battery module 10 may include a battery cell 100, a cell cartridge assembly 200, an end plate assembly 300, and an ICB assembly 400.

The battery cell 100 may be provided as one or more, and when provided in plural numbers, may be stacked so as to be electrically connected to each other. Hereinafter, in this embodiment, the description will be limited to the fact that the battery cell 100 is provided in plural numbers.

The plurality of battery cells 100 may be provided as secondary batteries. Hereinafter, in this embodiment, the description will be limited to a secondary battery provided as a pouch-type secondary battery. Since the pouch-type secondary battery is well known, detailed description will be omitted hereinafter.

The cell cartridge assembly 200 may accommodate the at least one, or in this embodiment, the plurality of battery cells 100. The cell cartridge assembly 200 may be provided with at least one or more cells and may accommodate at least one battery cell 100. Hereinafter, in this embodiment, the description will be limited to the case where the cell cartridge assembly 200 is provided in plural pieces.

The plurality of cell cartridge assemblies 200 may be arranged to be stacked on each other in the front-back direction of the battery pack 1. More specifically, the plurality of cell cartridge assemblies 200 may be disposed between a first end plate 320 and a second end plate 340, which will be described later, along the front-back direction of the battery module 10.

And, each cell cartridge assembly 200 can accommodate a plurality of battery cells 100. Hereinafter, in this embodiment, each cell cartridge assembly 200 will be described limited to accommodating two battery cells 100.

Each cell cartridge assembly 200 may include a first cartridge 220, a second cartridge 240, and a snap protrusion 260.

The first cartridge 220 may cover the front of the at least one battery cell 100. Specifically, in this embodiment, the first cartridge 220 may cover the front of the battery cell 100 disposed at the front of the two battery cells 100.

The first cartridge 220 may be provided with a first cartridge snap coupling portion 225.

The first cartridge snap coupling portion 225 is for coupling the first cartridge 220 with a second cartridge 240, which will be described later, and may be provided on both sides of the first cartridge 220.

The first cartridge snap coupling portion 225 is snap coupled to the second cartridge snap coupling portion 245 of the second cartridge 240, which will be described later. For this, the second cartridge 240 and the second cartridge snap coupling portion will be described below. We will look at it together when explaining (245).

The second cartridge 240 may cover the rear of the at least one battery cell 100. Specifically, in this embodiment, the second cartridge 240 may cover the rear of the battery cell 100 disposed at the rear of the two battery cells 100.

The second cartridge 240 is snap-coupled with the first cartridge 220 and can accommodate the at least one, in this embodiment, two battery cells 100 together with the first cartridge 220. there is.

For this purpose, the second cartridge 240 may be provided with a second cartridge snap coupling portion 245.

The second cartridge snap coupling portion 245 is provided on both sides of the second cartridge 240 and may be snap coupled to the first cartridge snap coupling portion 225 of the first cartridge 220. As discussed above, the snap coupling may be performed on both sides of the second cartridge 245 and the first cartridge 225.

Hereinafter, we will look at the related structures in more detail regarding the snap coupling.

For the snap coupling, a plurality of second cartridge snap coupling parts 245 and the first cartridge snap coupling parts 225 may be provided, respectively. Specifically, the plurality of first cartridge snap coupling parts 225 may be spaced apart from each other by a predetermined distance along the vertical direction of the first cartridge 220, and the plurality of second cartridge snap coupling parts 245 may be arranged in the vertical direction of the first cartridge 220. They may be disposed at a predetermined distance apart along the vertical direction of the second cartridge 240, and may be disposed opposite to the plurality of first cartridge snap coupling portions 245 along the front-back direction of the battery module 10. Through this arrangement, the first cartridge 220 and the second cartridge 240 can be simply assembled in the front and rear directions of the battery module 10 through the snap coupling.

Regarding the snap coupling, looking more specifically, the plurality of first cartridge snap coupling parts 225 may be provided as snap hooks, and the plurality of second cartridge snap coupling parts 245 may be provided as snap hooks. It may be provided with a snap hook groove that is snapped into place. Conversely, it may be possible for the plurality of first cartridge snap engaging portions 225 to be provided as snap hook grooves, and the plurality of second cartridge snap engaging portions 245 to be provided as snap hooks snap-coupled with the snap hook groove. You can. In addition, the plurality of first cartridge snap coupling parts 225 and the plurality of second cartridge snap coupling parts 245 are structured to have both snap hooks and snap hook grooves, and these snap hooks and snap hook grooves have a zigzag shape. Of course, it may also be possible to place it as .

The snap protrusion 260 is for coupling with the end plate 300, which will be described later, and may be provided on both sides of each cell cartridge assembly 200. Specifically, the snap protrusions 260 are formed at the bottom of both sides of the first cartridge 220 and the second cartridge 240, respectively, and the snap protrusions 260 are formed at the bottom of each side of the first cartridge 220 and the second cartridge 240. They can be placed in contact with each other.

The end plate assembly 300 may cover at least one, and in this embodiment, both the front and back of the plurality of cell cartridge assemblies 200. Specifically, the end plate assembly 300 is located at the front of the foremost cell cartridge assembly 200 among the plurality of cell cartridge assemblies 200 and at the rearmost cell cartridge assembly among the plurality of cell cartridge assemblies 200 ( 200) can cover the rear.

In this embodiment, at least one of the end plate assemblies 300 may be snap-coupled with each of the plurality of cell cartridge assemblies 200 to secure the plurality of cell cartridge assemblies 200.

Meanwhile, when the end plate assembly 300 and the plurality of cell cartridges 200 are snapped together, the plurality of cell cartridge assemblies 200 are formed into a first end plate 320 and a second end plate, which will be described later. At 340, the battery module 10 may be snap-coupled while sliding along the vertical direction. Here, the plurality of cell cartridge assemblies 200 may be sequentially slid and snap-coupled with the end plate assembly 300 to prevent misassembly.

Hereinafter, we will look at the end plate assembly 300 in more detail.

The end plate assembly 300 may include a first end plate 320, a second end plate 340, and a snap plate 360.

The first end plate 320 may cover the front of at least one cell cartridge, in this embodiment, the frontmost cell cartridge assembly 200 among the plurality of cell cartridge assemblies 200.

The second end plate 340 is disposed behind the first end plate 320 and includes at least one cell cartridge, in this embodiment, the rearmost cell cartridge among the plurality of cell cartridge assemblies 200. It can cover the rear of the assembly 200.

The snap plate 360 connects the second end plate 340 and the first end plate 320, and specifically, the bottom of the first end plate 320 and the second end plate 340. The bottom of the can be connected.

The snap plate 360 may be coupled to at least one cell cartridge, or in this embodiment, the plurality of cell cartridge assemblies 200 through snap coupling.

For this snap coupling, the snap plate 360 may be provided with a snap groove 365.

In this embodiment, the snap groove 365 may be snap-coupled with at least one of the snap protrusions 260 of the plurality of cell cartridge assemblies 200. The snap grooves 365 may be provided in plural numbers to be snap-coupled with the plurality of cell cartridge assemblies 200, and the plurality of cell cartridge assemblies 200 are located on the front and rear of the battery module 10. They may be arranged to be spaced apart from each other at a predetermined distance along the direction.

As such, in this embodiment, the end plate assembly 300 and the plurality of cell cartridge assemblies 200 are coupled to each other through mutual snap coupling at the bottom of the end plate assembly 300, so that the battery module 10 ), no separate long bolts or other members are required for fastening at the bottom. Accordingly, in this embodiment, an increase in the module size caused by the absence of a separate long bolt at the bottom of the battery module 10 may not occur, and the increase in manufacturing cost due to the separate member and the fastening of the separate member may not occur. Deterioration in manufacturing efficiency can be prevented.

In addition, in this embodiment, the plurality of cell cartridge assemblies 200 are separately fastened to the bottom of the end plate assembly 300 through snap coupling, so that they are more stably attached to the end plate assembly 300. It can be fixed. Accordingly, in this embodiment, the plurality of cell cartridge assemblies 200 are strengthened at the bottom of the end plate assembly 300 without the absence of separate clips, etc., which were conventionally required at the bottom of the battery module 10. Clamping force can be improved.

Therefore, in this embodiment, members such as separate clips for fixing at the bottom of the battery module 10 can be omitted, thereby reducing the size of the battery module 10 and reducing manufacturing costs. there is.

The ICB assembly 400 is for electrically connecting the plurality of battery cells 100, and may be mounted on the upper side of the plurality of cell cartridge assemblies 200. Here, the ICB assembly 400 may be mounted after the plurality of cell cartridge assemblies 200 and the end plate assembly 300 are mounted.

Referring again to FIGS. 1 and 2 , the BMS module 50 is used to manage and control the battery module 10 and may be electrically connected to the battery module 10 .

The heat sink 60 is for cooling the battery module 10 and may be provided on one side of the battery module 10, or in the present embodiment, on the lower side of the battery module 10. The heat sink 60 may be provided in a water-cooled or air-cooled structure.

The pack case 70 is used to package the at least one battery module 10, and can form an accommodating space capable of accommodating the at least one battery module 10.

Hereinafter, the pack case 70 will be examined in detail with further reference to the following drawings.

FIGS. 10 and 11 are diagrams for explaining the assembly of the pack case of the battery pack of FIG. 2.

Referring to FIGS. 2, 10, and 11, the pack case 70 may include a case body 720 and a case cover 760.

The case body 720 can accommodate the at least one battery module 10. To this end, an accommodating space for accommodating the at least one battery module 10 may be provided in the case body 720.

The case cover 760 may be combined with the case body 720 to package the at least one battery module 10. Looking at the combination of the case cover 760 and the case body 720, the case body 750 and the case cover 760 are coupled along each other's edges, and then a laser beam is applied from the upper side of the case cover 760. Can be welded.

Looking specifically, here, when the edges of the case cover 760 and the case body 750 are coupled to each other, the edge of the case cover 760 surrounds the edge of the case body 750 for more stable coupling. Can be combined into shapes.

Additionally, to increase the laser welding efficiency, the case cover 760 may be made of a laser-transmissive plastic material, and the case body 720 may be made of a laser-absorbing plastic material.

As such, in this embodiment, the case cover 760 and the case body 750 are joined together at their edges through laser welding, so the watertightness of the pack case 70 can be significantly improved.

A pair of terminal terminals 80, which will be described later, may be installed through the case cover 760.

Additionally, the case cover 760 may be provided with a flow prevention rib 762, a distribution partition 764, a fixing hook 766, and a cap fixing rib 768.

The anti-flow rib 762 is provided on the inner surface of the case cover 760 and may protrude downward from the case cover 760. The anti-flow rib 762 may be disposed between the at least one battery module 10 and the edge of the case body 720, and may be provided as one or more.

The at least one anti-flow rib 762 is disposed adjacent to the at least one battery module 10 on the inside of the case cover 760 to prevent the at least one battery module 10 from moving when an external impact, etc. occurs. can be prevented.

The dispersion partition 764 is provided on the upper surface of the case cover 760 and can disperse the liquid to prevent the liquid from pooling on the upper side of the pack case 70.

A plurality of the distribution partition walls 764 may be provided, and the plurality of distribution partition walls 764 are formed long along the longitudinal direction of the case cover 760 and are spaced apart from each other by a predetermined distance, and the plurality of distribution partition walls 764 are formed to be long in the longitudinal direction of the case cover 760. The length may become shorter as it approaches the border of (760).

The fixing hook 766 is provided on the upper surface of the case cover 760 of the pack case 70 and can be detachably coupled to the terminal cap 90, which will be described later. Specifically, the fixing hook 766 may be snap-coupled with the hook coupling groove 965 of the second cap plate 960 of the terminal cap 90, which will be described later.

The cap fixing rib 768 detachably fixes the terminal cap 90, which will be described later, together with the fixing hook 766, and can be provided on the upper surface of the case cover 760 of the pack case 70. there is. The cap fixing ribs 768 may be provided in plural pieces, and in the present embodiment, they may be provided as a pair and placed close to each other.

The pair of terminal terminals 80 are electrically connected to the BMS module 50 and the at least one battery module 10 and protrude out of the case cover 760 of the pack case 70. You can.

FIGS. 12 and 13 are diagrams for explaining the terminal cap fixing structure of the battery pack of FIG. 2.

Referring to FIGS. 12 and 13 , the battery pack 1 may further include a terminal cap 90.

The terminal cap 90 is for insulating the pair of terminal terminals 80 from an external metal body, etc., and can electrically insulate the pair of terminal terminals 80 from an external metal body, etc. It can be covered. The terminal cap 90 may be provided as one or more terminal caps. Hereinafter, in this embodiment, the description will be limited to one provided to cover one terminal terminal 80. This is because short circuit can be prevented even if only one terminal terminal 80 is insulated.

The terminal cap 90 covers at least one of the pair of terminal terminals 80 and can be detachably coupled to the pack case 70. Contact between the pair of terminal terminals 80 and an external metal body, etc. generally occurs when the battery pack 10 is transported, etc., and substantially occurs when the battery pack 10 is fixed. This is because it is desirable for the terminal cap 90 to be detachably mounted on the pack case 70 to connect the pair of terminal terminals 80 to an external power source.

In addition, the terminal cap 90 can be detachably coupled to the pack case 70 through snap coupling so that it can be simply and easily detached. Specifically, the terminal cap 90 may be detachably snap-coupled with the case cover 760 of the pack case 70.

Hereinafter, we will look at the structure of the terminal cap 90 in more detail.

The terminal cap 90 may include a first cap plate 920 and a second cap plate 960.

The first cap plate 920 may cover the top of the at least one terminal 80. The first cap plate 920 may be detachably snap-coupled with the case cover 760 of the pack case 70.

The first cap plate 920 may be provided with a rib insertion groove 925.

The rib insertion groove 925 is for inserting the cap fixing rib 768 of the case cover 760, and may be provided in a number corresponding to the number of the cap fixing ribs 768, and the cap fixing rib 768 is inserted into the rib insertion groove 925. It can be detachably snap-coupled with the fixing rib 758.

The second cap plate 960 extends from the first cap plate 920 and may cover one side of the at least one terminal 80. Specifically, the second cap plate 960 is bent and extended downward from the first cap plate 920 and can be detachably coupled to the case cover 760 of the pack case 70.

Like the second cap plate 960 and the first cap plate 920, it can be detachably snap-coupled with the case cover 760 of the pack case 70.

The second cap plate 960 may be provided with a hook coupling groove 965.

The hook coupling groove 965 is for inserting the fixing hook 766 of the case cover 760, and can be detachably snap-coupled with the fixing hook 766.

As such, the terminal cap 90 according to this embodiment has a simpler structure and can be easily detached from the pack case 70, making the terminal protection structure for protecting the pair of terminal terminals 80 more efficient. It can be implemented with

In the above, preferred embodiments of the present invention have been shown and described, but the present invention is not limited to the specific embodiments described above, and may be used in the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those with the knowledge, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

1: Battery pack 10: Battery module
50: BMS module 60: Heat sink
70: Pack case 80: Terminal terminals
90: terminal cap 100: battery cell
200: cell cartridge assembly 220: first cartridge
225: first cartridge snap engaging portion 240: second cartridge
245: second cartridge snap coupling portion 260: snap protrusion
300: End plate assembly 320: First end plate
340: second end plate 360: snap plate
365: Snap home 400: ICYB assembly
720: Case body 760: Case cover
762: anti-flow rib 764: distribution bulkhead
766: fixing hook 768: cap fixing rib
920: first cap plate 925: rib insertion groove
960: Second cap plate 965: Hook coupling groove

Claims (14)

In the battery pack,
At least one battery module including at least one battery cell;
a pack case packaging the at least one battery module;
a pair of terminal terminals protruding out of the pack case and electrically connected to the at least one battery module; and
It includes a terminal cap that covers at least one of the pair of terminal terminals and is detachably snap-coupled with the pack case,
The pack case is,
a case body accommodating the at least one battery module; and
It includes a case cover coupled to the case body to package the at least one battery module, and through which the pair of terminal terminals are mounted,
On the inner surface of the case cover,
A battery pack, characterized in that at least one anti-flow rib that prevents the at least one battery module from moving. According to paragraph 1,
The terminal cap is,
a first cap plate covering the top of at least one terminal; and
A second cap plate extending from the first cap plate and covering one side of the at least one terminal terminal,
At least one of the first cap plate and the second cap plate,
A battery pack characterized in that it is detachably snap-coupled with the pack case. According to paragraph 2,
The second cap plate is,
A battery pack, characterized in that it is bent downward from the first cap plate and is detachably snap-coupled with the pack case. According to paragraph 3,
In the pack case,
at least one retaining hook; protruding;
In the second cap plate,
A battery pack characterized in that it is provided with a hook coupling groove that is detachably snap-coupled with the fixing hook. According to paragraph 3,
In the pack case,
at least one cap securing rib; protruding;
In the first cap plate,
A battery pack characterized in that it is provided with a rib insertion groove into which the at least one cap fixing rib is inserted. According to paragraph 1,
The terminal cap is,
A battery pack characterized in that it is detachably snap-coupled with the case cover. According to clause 6,
The case body and the case cover are,
A battery pack characterized by laser welding along mutual edges. In clause 7,
The case body is,
Made of laser-absorbing plastic material,
The case cover is,
A battery pack characterized in that it is made of a laser-transmissive plastic material. In clause 7,
The border of the case cover is,
A battery pack characterized in that it surrounds the edge of the case body. delete According to paragraph 1,
The at least one flow prevention rib,
A battery pack, characterized in that disposed between the at least one battery module and an edge of the case body. According to clause 6,
On the upper surface of the case cover,
A battery pack characterized in that it is provided with at least one dispersion partition wall that disperses the liquid to prevent the liquid from pooling. According to clause 12,
The distributed partition wall is,
It is provided in plural pieces,
The plurality of distributed partitions are,
A battery pack that is formed to be long along the longitudinal direction of the case cover and becomes shorter toward the edge of the case cover. A vehicle comprising at least one battery pack according to claim 1.

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