CN118472532A - Battery assembly and soft package battery applying same - Google Patents

Abstract

The invention discloses a battery component and a soft package battery using the same, comprising: the battery cell is arranged in the frame; the protective housing connect in the frame and cover in the electric core, the protective housing can laminate in the surface of electric core, wherein, the frame has preceding tip and rear end portion, the protective housing connect in the upper portion and/or the lower part of frame, the thickness of protective housing is less than preceding tip and/or the thickness of rear end portion. Because the thickness of protective housing has reduced for preceding tip or rear end portion, consequently by protective housing and frame common protection mode to electric core, compare with the mode of gluing the shell about traditional, its thickness has obtained effectively reducing, consequently can increase the thickness space of electric core to make electric core can realize the promotion effect of its electric core capacity through its thickness and volume increase, and then make the battery possess higher energy density, and promote its performance.

Description

Battery assembly and soft pack battery using the same

Technical Field

The present invention relates to the field of batteries, and in particular to a battery assembly and a soft-pack battery using the same.

Background Art

The existing soft-pack lithium battery cannot effectively resist external impact due to the low strength of the aluminum-plastic film that wraps the lithium-ion battery cell. At the same time, it is easy to deform when dropped, squeezed, or collided, which can easily cause a short circuit inside the battery. Therefore, a protective shell is generally provided on the outside of the soft-pack battery. However, the traditional protective shell is implemented in the form of a plastic shell set, which easily leads to the problem of low overall energy density.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a battery assembly that can increase the overall energy density.

The present invention also provides a soft-pack battery having the battery assembly.

According to an embodiment of the first aspect of the present invention, a battery assembly includes: a frame and a protective shell, wherein a battery cell is installed in the frame; the protective shell is connected to the frame and covers the battery cell, and the protective shell can be attached to the surface of the battery cell, wherein the frame has a front end and a rear end, the protective shell is connected to the upper part and/or the lower part of the frame, and the thickness of the protective shell is less than the thickness of the front end and/or the rear end.

The battery assembly according to the embodiment of the present invention has at least the following beneficial effects: the frame can protect the sides and ends of the battery cell, and cooperate with the protective shell on the top and/or bottom of the battery cell to achieve the effect of comprehensive protection of the battery cell, thereby effectively increasing the electromagnetic impact resistance and thus avoiding the problem of easy damage to the battery.

Since the thickness of the protective shell is reduced relative to the front end or the rear end, the thickness of the protection method for the battery cell composed of the protective shell and the frame is effectively reduced compared with the traditional upper and lower plastic shell method. Therefore, the thickness space of the battery cell can be increased, and the battery cell can achieve an increase in its battery cell capacity by increasing its thickness and volume, thereby allowing the battery to have a higher energy density and improve its performance.

According to some embodiments of the present invention, the protective shell is a metal sheet, and a hollow area is provided on the upper part and/or the lower part of the frame, and the metal sheet covers the hollow area.

According to some embodiments of the present invention, the upper portion and/or the lower portion of the battery cell extends into the hollow area and contacts the protective shell.

According to some embodiments of the present invention, the front end portion and the rear end portion are separated from each other, there are two protective shells and one of them is integral with the front end portion and can be detachably connected to the rear end portion, and the other of the two protective shells is integral with the rear end portion and can be detachably connected to the front end portion.

According to some embodiments of the present invention, at least one of the front end portion and the rear end portion is provided with a power connection portion, and the power connection portion is electrically connected to the battery core and extends outside the frame.

According to some embodiments of the present invention, the power connection portion includes an electrode contact piece, and the electrode contact piece is clamped to the frame or a patch is connected to the frame.

According to some embodiments of the present invention, an anti-foolproof structure is provided on the outer wall of the frame, and the anti-foolproof structure includes at least one of an anti-foolproof rib and an anti-foolproof groove, and the anti-foolproof structure is provided on the outer wall of the front end portion and/or the rear end portion.

According to some embodiments of the present invention, a wireless charging coil group is disposed in the frame, a charging interface is disposed on an outer wall of the frame, and both the wireless charging coil group and the charging interface are electrically connected to the battery core.

According to some embodiments of the present invention, the periphery of the frame is coated with label paper, and the label paper wraps the frame and the protective shell.

The soft-pack battery according to the second embodiment of the present invention comprises the battery assembly according to the first embodiment of the present invention.

The soft-pack battery according to the embodiment of the present invention has at least the following beneficial effects: the frame can protect the sides and ends of the battery cell, and cooperate with the protective shell on the top and/or bottom of the battery cell to achieve the effect of comprehensive protection of the battery cell, thereby effectively increasing the electromagnetic impact resistance and thus avoiding the problem of easy damage to the battery.

Since the thickness of the protective shell is reduced relative to the front end or the rear end, the thickness of the protection method for the battery cell composed of the protective shell and the frame is effectively reduced compared with the traditional upper and lower plastic shell method. Therefore, the thickness space of the battery cell can be increased, and the battery cell can achieve an increase in its battery cell capacity by increasing its thickness and volume, thereby allowing the battery to have a higher energy density and improve its performance.

Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic diagram of a battery assembly according to an embodiment of the present invention;

FIG2 is a schematic diagram of the back side of the battery assembly shown in FIG1 ;

FIG3 is a schematic diagram of the battery assembly shown in FIG1 in an exploded state;

FIG4 is a schematic diagram of a frame of the battery assembly shown in FIG1 ;

FIG5 is an exploded schematic diagram of another embodiment of the battery assembly shown in FIG1 ;

FIG. 6 is a schematic diagram of a frame of another embodiment of the battery assembly shown in FIG. 1 .

Reference numerals: protective shell 150; frame 200; buckle slot 205; front end 210; rear end 220; PCB board 230; card platform 235; electrode contact 290; electrode contact sheet 300; buckle 350; foolproof structure 400; foolproof rib 430; foolproof groove 470; buckle slot 490; battery cell 600; charging interface 700; wireless charging coil assembly 800; protective plate 850; label paper 900;

DETAILED DESCRIPTION

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

Referring to FIG. 1 , a battery assembly includes: a frame 200 and a protective shell 150, wherein a battery cell 600 is installed in the frame 200; the protective shell 150 is connected to the frame 200 and covers the battery cell 600, and the protective shell 150 can be attached to the surface of the battery cell 600, wherein the frame 200 has a front end 210 and a rear end 220, and the protective shell 150 is connected to the upper and/or lower part of the frame 200, and the thickness of the protective shell 150 is less than the thickness of the front end 210 and/or the rear end 220. The frame 200 can protect the sides and ends of the battery cell 600, and cooperate with the protective shell 150 on the upper and/or lower part of the battery cell 600 to achieve the effect of fully protecting the battery cell 600, thereby effectively increasing the electromagnetic impact resistance, thereby avoiding the problem of easy damage to the battery. Since the thickness of the protective shell 150 is reduced relative to the front end 210 or the rear end 220, the thickness of the protection method for the battery cell 600 formed by the protective shell 150 and the frame 200 is effectively reduced compared with the traditional upper and lower plastic shell method. Therefore, the thickness space of the battery cell 600 can be increased, and the battery cell can achieve an increase in its capacity by increasing its thickness and volume, thereby allowing the battery to have a higher energy density and improve its performance.

Specifically, the battery cell 600 is connected to the protection plate 850 , and is in contact with and pressed against the front end portion 210 via the protection plate 850 , so as to prevent the battery cell 600 from shaking in the frame 200 .

In some embodiments, referring to FIG. 2 , the protective shell 150 is a metal sheet, and a hollow area is provided at the upper and/or lower part of the frame 200, and the metal sheet covers the hollow area. The metal sheet can provide material strength that is not inferior to that of a plastic protective shell 150 of a conventional thickness within a lower thickness range. Therefore, even if the thickness of the protective shell 150 is reduced, it can still provide sufficient protection for the battery cell 600, thereby ensuring that the battery cell 600 can still obtain sufficient protection after the volume is increased.

Specifically, the frame 200 is a plastic frame 200, and the protective shell 150 is a metal sheet. Of course, the frame 200 can also be made of metal material, and the specific implementation method can be adjusted accordingly according to actual needs, and is not limited here.

3 , the upper and/or lower portion of the battery cell 600 extends into the hollow region and contacts the protective shell 150. The battery cell 600 extends into the hollow region, so the battery cell 600 can have a larger thickness extension range, so that the battery cell 600 can be thickened as much as possible, and effectively achieve the effect of improving its storage capacity.

Specifically, the upper and lower parts of the frame 200 both have hollow areas, and the upper and lower parts of the battery cell 600 both extend into the hollow areas.

In some embodiments, referring to FIG. 5 , the front end portion 210 and the rear end portion 220 are separated from each other, the protective shell 150 is two and one of them is integrated with the front end portion 210 and can be detachably connected to the rear end portion 220, and the other of the two protective shells 150 is integrated with the rear end portion 220 and can be detachably connected to the front end portion 210. The front end portion 210 and the rear end portion 220 separated from each other can cooperate with the protective shell 150 to form two parts constituting the frame 200. The two parts are combined to directly form the frame 200, so compared with the conventional frame 200 assembly and the protective shell 150 assembly operation, the assembly, materials, etc. can be simplified, so it has the advantage of low cost.

Specifically, the front end portion 210 , the rear end portion 220 and the protective shell 150 are all made of plastic material, and each forms a half portion of the frame 200 .

In some embodiments, referring to FIG4 , at least one of the front end portion 210 and the rear end portion 220 is provided with a power connection portion, which is electrically connected to the battery cell 600 and extends outside the frame 200. The battery cell 600 can be electrically connected to the outside world through the power connection portion, so that the battery cell 600 can supply power to external electrical appliances, thereby completing the power supply operation of the battery.

6 , the electrical connection unit includes an electrode contact 300, which is snapped onto the frame 200 or connected to the frame 200. The electrode contact 300 is a sheet-like component with a large enough contact area, so that electrical connection with the outside world can be smoothly achieved through it.

Specifically, the electrode contact sheet 300 is provided with a buckle 350 , and is buckled into the frame 200 through the buckle 350 .

It is conceivable that the power connection portion may also include an electrode contact 290 disposed at the front end portion 210, and an electrode contact sheet 300 disposed at the rear end portion 220, which respectively form the positive and negative electrodes of the battery, so that the battery can smoothly supply power.

In some embodiments, referring to FIG. 2 , a foolproof structure 400 is provided on the outer wall of the frame 200. The foolproof structure 400 includes at least one of a foolproof rib 430 and a foolproof groove 470. The foolproof structure 400 is provided on the outer wall of the front end 210 and/or the rear end 220. The foolproof structure 400 can play a foolproof role when assembling the frame 200 and the protective shell 150, the battery cell 600 and other components, thereby effectively reducing the negative impact caused by misoperation during the assembly process.

Specifically, fool-proof grooves 470 and fool-proof ribs 430 are provided on the outer walls of the front end portion 210 and the rear end portion 220 .

Furthermore, the front end portion 210 is provided with a grip groove 490 to facilitate the user of the battery to remove the battery from the battery compartment.

In some embodiments, referring to FIG. 3 , a wireless charging coil assembly 800 is disposed in the frame 200, a charging interface 700 is disposed on the outer wall of the frame 200, and both the wireless charging coil assembly 800 and the charging interface 700 are electrically connected to the battery cell 600. The wireless charging coil assembly 800 enables the battery to be wirelessly charged through a charging transmitter such as a wireless charging stand, while the charging interface 700 enables the battery to be wired charged through a wire. Therefore, the battery can have a variety of charging methods, thereby ensuring that the battery can adapt to various charging scenarios according to demand.

Specifically, the charging interface 700 is a Micro USB interface or a Type-C interface.

Furthermore, a PCB board 230 is provided in the frame 200, and the charging interface 700 and the wireless charging coil assembly 800 are both electrically connected to the PCB board 230; a charging indicator light is provided on the PCB board 230, and charging indication can be provided through the charging indicator light to remind the user that charging is required or charging is stopped.

Furthermore, a clamping platform 235 is provided on the PCB board 230, and a buckle groove 205 is provided on the frame 200. The clamping platform 235 is clamped in the buckle groove 205, so that the PCB board 230 can be installed in the frame 200 by means of buckles, and has the advantage of easy assembly and disassembly.

In some embodiments, referring to Fig. 5, the outer periphery of the frame 200 is coated with a label paper 900, and the label paper 900 wraps the frame 200 and the protective shell 150. The label paper 900 can not only package and mark the battery, but also effectively further encapsulate the protective shell 150 and the frame 200, thereby maintaining a stable assembly of the two.

The second aspect of the present invention provides an embodiment of a soft-pack battery, including the above battery assembly. The frame 200 can protect the sides and ends of the battery cell 600, and cooperate with the protective shell 150 on the upper and/or lower part of the battery cell 600 to achieve the effect of comprehensive protection of the battery cell 600, thereby effectively increasing the electromagnetic impact resistance and thus avoiding the problem of easy damage to the battery. Since the thickness of the protective shell 150 is reduced relative to the front end 210 or the rear end 220, the protection method for the battery cell 600 composed of the protective shell 150 and the frame 200 is effectively reduced in thickness compared with the traditional upper and lower plastic shell method, so that the thickness space of the battery cell 600 can be increased, and the battery cell can achieve the effect of increasing the capacity of the battery cell 600 by increasing its thickness and volume, so that the battery can have a higher energy density and improve its performance.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims (10)

1. A battery assembly, comprising:

A frame (200), wherein a battery cell (600) is installed in the frame (200);

a protective shell (150) connected with the frame (200) and covering the battery cell (600), wherein the protective shell (150) can be attached to the surface of the battery cell (600),

The frame (200) has a front end (210) and a rear end (220), the protective case (150) is connected to an upper portion and/or a lower portion of the frame (200), and the protective case (150) has a thickness smaller than that of the front end (210) and/or the rear end (220).

2. The battery assembly of claim 1, wherein:

The protection shell (150) is a metal sheet, a hollowed-out area is arranged on the upper portion and/or the lower portion of the frame (200), and the metal sheet covers the hollowed-out area.

3. The battery assembly of claim 2, wherein:

the upper part and/or the lower part of the battery cell (600) extends into the hollowed-out area and is in contact with the protective shell (150).

4. The battery assembly of claim 1, wherein:

The front end part (210) and the rear end part (220) are mutually separated, one of the protective cases (150) is integrated with the front end part (210) and can be detachably connected with the rear end part (220), and the other of the two protective cases (150) is integrated with the rear end part (220) and can be detachably connected with the front end part (210).

5. The battery assembly of claim 1, wherein:

At least one of the front end portion (210) and the rear end portion (220) is provided with an electric connection portion electrically connected with the battery cell (600) and extending out of the frame (200).

6. The battery pack of claim 5, wherein:

the power connection part comprises an electrode contact (300), and the electrode contact (300) is clamped to the frame (200) or the patch is connected to the frame (200).

7. The battery assembly of claim 1, wherein:

The fool-proof structure (400) is arranged on the outer wall of the frame (200), the fool-proof structure (400) comprises at least one of fool-proof ribs (430) and fool-proof grooves (470), and the fool-proof structure (400) is arranged on the outer wall of the front end part (210) and/or the outer wall of the rear end part (220).

8. The battery assembly of claim 1, wherein:

The wireless charging device is characterized in that a wireless charging coil set (800) is arranged in the frame (200), a charging interface (700) is arranged on the outer wall of the frame (200), and the wireless charging coil set (800) and the charging interface (700) are electrically connected with the battery cell (600).

9. The battery assembly of claim 1, wherein:

the periphery of the frame (200) is coated with label paper (900), and the label paper (900) wraps the frame (200) and the protective shell (150).

10. A pouch cell comprising the cell assembly of any one of claims 1 to 9.