CN220474703U

CN220474703U - Temperature acquisition assembly, lithium battery and electronic product

Info

Publication number: CN220474703U
Application number: CN202321959042.9U
Authority: CN
Inventors: 李同欣; 李武岐; 邱松武; 肖时俊; 陈坤钟; 贺明
Original assignee: Zhejiang Sunwoda Electronics Co Ltd
Current assignee: Zhejiang Sunwoda Electronics Co Ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-02-09
Anticipated expiration: 2033-07-24

Abstract

The utility model provides a temperature acquisition assembly, a lithium battery and an electronic product, wherein the temperature acquisition assembly comprises: a substrate; the sampling piece is arranged on the substrate, the sampling piece is arranged on one side of the substrate, and the other side of the substrate is used for being attached to the battery cell; one end of the sampling wire is connected with the substrate, and the other end of the sampling wire is connected with the battery protection plate; the packaging shell is provided with a packaging cavity and a packaging opening communicated with the packaging cavity, and is arranged on the substrate through the packaging mask, and the sampling piece is positioned in the packaging cavity. Through the technical scheme that this application provided, can solve the relatively poor problem of laminating degree of temperature acquisition element and electric core among the correlation technique.

Description

Temperature acquisition assembly, lithium battery and electronic product

Technical Field

The utility model relates to the technical field of electronic products, in particular to a temperature acquisition assembly, a lithium battery and an electronic product.

Background

The electronic product mainly refers to a mobile phone, a tablet personal computer or a notebook computer, and is powered by a lithium battery as a power supply. The lithium battery comprises a battery core and a battery protection plate which is used for protecting the battery core and is connected with the battery core. In order to monitor the temperature of the battery cell, the lithium battery is also provided with a temperature acquisition element.

In the related art, after the temperature collecting element is welded to the battery protection plate, it is put into a groove of the battery, and the portion of the temperature collecting element that emits the battery protection plate collects the temperature of the current collector. Because the temperature acquisition element is an oval structure after being packaged, when the temperature acquisition element is attached to the battery cell, the attaching effect is poor, and therefore the temperature acquisition element is fixed by adopting silica gel.

However, the silica gel is adopted for fixation, the curing speed of the silica gel is slower, and meanwhile, as the temperature acquisition element has certain rebound performance, the adhesion between the temperature acquisition element and the battery cell is still poor.

Disclosure of Invention

The utility model provides a temperature acquisition component, a lithium battery and an electronic product, which are used for solving the problem of poor bonding degree of a temperature acquisition element and a battery cell in the related technology.

According to one aspect of the present utility model, there is provided a temperature acquisition assembly comprising: a substrate; the sampling piece is arranged on the substrate, the sampling piece is arranged on one side of the substrate, and the other side of the substrate is used for being attached to the battery cell; one end of the sampling wire is connected with the substrate, and the other end of the sampling wire is connected with the battery protection plate; the packaging shell is provided with a packaging cavity and a packaging opening communicated with the packaging cavity, and is arranged on the substrate through the packaging mask, and the sampling piece is positioned in the packaging cavity.

Further, the substrate includes an FPC board.

Further, the base plate still includes the reinforcing plate, and one side and the FPC board laminating of reinforcing plate, the opposite side of reinforcing plate are used for laminating with the electric core.

Further, the temperature acquisition assembly further comprises heat-conducting glue, one side of the heat-conducting glue is connected with the reinforcing plate in a sticking mode, and the other side of the heat-conducting glue is connected with the battery cell in a sticking mode.

Further, the reinforcing plate is an aluminum plate.

Further, the sampling member includes an NTC thermistor.

According to another aspect of the present utility model, there is provided a lithium battery including: a battery cell; the battery protection plate is arranged at one end of the battery cell and is electrically connected with the battery cell; and one side of a substrate of the temperature acquisition assembly is attached to the battery cell, a sampling line of the temperature acquisition assembly is electrically connected with the battery protection plate, and the temperature acquisition assembly is provided by the temperature acquisition assembly.

Further, an end wall of one end of the battery cell, which is provided with the battery protection plate, is attached to one side of the substrate.

Further, in the width direction of the battery cell, the temperature acquisition assembly and the battery protection plate are arranged at intervals.

According to still another aspect of the present utility model, there is provided an electronic product including the lithium battery provided above.

By applying the technical scheme of the utility model, the temperature acquisition assembly comprises a substrate, a sampling piece, a sampling line and a packaging shell, the heat of the battery core is transmitted to the substrate, the heat of the substrate can be acquired by utilizing the sampling piece, the temperature signal acquired by the sampling piece is transmitted to the battery protection board by utilizing the sampling line, and the temperature acquired by the sampling piece can be read by utilizing the battery protection board. Thereby realizing the temperature measurement of the battery cell. Compared with the mode of adopting silica gel to transfer heat and fix the temperature acquisition element, the temperature acquisition assembly can utilize the better laminating of base plate and electric core to need not to use silica gel to fix, optimized product technology and efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows an exploded view of a temperature acquisition assembly of a lithium battery provided according to an embodiment of the present utility model;

fig. 2 shows a schematic structural diagram of a lithium battery provided according to an embodiment of the present utility model;

fig. 3 shows a partial enlarged view at a in fig. 2.

Wherein the above figures include the following reference numerals:

10. a battery cell;

20. a battery protection plate;

30. a temperature acquisition assembly; 31. a substrate; 311. an FPC board; 312. a reinforcing plate; 32. a sampling member; 33. packaging the shell;

40. sampling lines.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a temperature acquisition assembly 30, where the temperature acquisition assembly 30 includes a substrate 31, a sampling member 32, a sampling wire 40 and a package 33, the sampling member 32 is disposed on the substrate 31, the sampling member 32 is disposed on one side of the substrate 31, and the other side of the substrate 31 is used for being attached to a battery cell 10; a sampling line 40, one end of the sampling line 40 is connected with the substrate 31, and the other end of the sampling line 40 is connected with the battery protection plate 20; the package case 33 has a package cavity and a package port communicating with the package cavity, the package case 33 is provided on the substrate 31 through a package mask, and the sampling member 32 is located in the package cavity.

By applying the technical scheme of the utility model, the temperature acquisition assembly 30 comprises a substrate 31, a sampling piece 32, a sampling line 40 and a packaging shell 33, the heat of the battery cell 10 is transmitted to the substrate 31, the heat of the substrate 31 can be acquired by the sampling piece 32, the temperature signal acquired by the sampling piece 32 is transmitted to the battery protection board 20 by the sampling line 40, and the temperature acquired by the sampling piece 32 can be read by the battery protection board 20. Thereby enabling temperature measurement of the cell 10. Compared with the mode of adopting silica gel to transfer heat and fix a temperature acquisition element, the temperature acquisition assembly 30 can be better attached with the battery cell 10 by utilizing the substrate 31, and the silica gel is not required to be used for fixing, so that the product process and the efficiency are optimized.

The sampling piece 32 is packaged by the packaging shell 33, so that the sampling piece 32 can be protected, and the sampling piece 32 is prevented from being damaged.

In the present embodiment, the package 33 is made of epoxy resin.

Specifically, the temperature signal collected by the sampling member 32 can be transmitted to the battery protection plate 20 by using the sampling line 40, and the battery protection plate has the advantages of simple structure and convenience in assembly.

As shown in fig. 1, the substrate 31 includes an FPC board 311. The FPC board 311 has the advantages of good heat conductive performance and light weight.

Wherein, can set up sampling piece 32 on the PCB board, compare in the PCB board, adopt FPC board to have the advantage that heat conductivility is excellent.

As shown in fig. 1, the substrate 31 further includes a reinforcing plate 312, one side of the reinforcing plate 312 is attached to the FPC board 311, and the other side of the reinforcing plate 312 is used to attach to the battery cell 10. The strength of the FPC board can be increased by using the reinforcing plate 312, thereby preventing the FPC board from being damaged.

In this embodiment, the reinforcing plate 312 is an aluminum plate, and the aluminum plate has the advantage of excellent heat conduction property.

The lithium battery further comprises a heat-conducting adhesive, one side of the heat-conducting adhesive is adhered to the reinforcing plate 312, and the other side of the heat-conducting adhesive is adhered to the battery cell 10. The reinforcing plate 312 can be adhered to the battery cell 10 by using the heat-conducting glue, and the heat transfer effect between the battery cell 10 and the reinforcing plate 312 is not hindered.

In this embodiment, the heat conductive adhesive is a double sided adhesive tape.

In this embodiment, the sampling member 32 includes an NTC thermistor. The NTC thermistor is adopted to collect the temperature of the battery cell 10, so that the battery cell has the advantage of being convenient to obtain materials.

In another embodiment of the present utility model, a lithium battery is provided, the lithium battery includes a battery cell 10, a battery protection plate 20, and a temperature acquisition assembly 30, wherein the battery protection plate 20 is disposed at one end of the battery cell 10 and is electrically connected with the battery cell 10; one side of the substrate 31 of the temperature acquisition assembly 30 is attached to the battery cell 10, the sampling line 40 of the temperature acquisition assembly 30 is electrically connected with the battery protection plate 20, and the temperature acquisition assembly 30 is the temperature acquisition assembly provided above. By adopting the lithium battery, the heat of the battery cell 10 is transferred to the substrate 31, the heat of the substrate 31 can be collected by the sampling member 32, the temperature signal collected by the sampling member 32 is transferred to the battery protection plate 20 by the sampling wire 40, and the temperature collected by the sampling member 32 can be read by the battery protection plate 20. Thereby enabling temperature measurement of the cell 10. Compared with the mode of adopting silica gel to transfer heat and fix the temperature acquisition element, the substrate 31 is utilized to be better attached with the battery cell 10, and the silica gel is not required to be used for fixing, so that the product process and the efficiency are optimized.

As shown in fig. 1, an end wall of the battery cell 10 at which the battery protection plate 20 is provided is bonded to one side of the substrate 31. By adopting the structure, the battery protection plate 20 and the substrate 31 can be positioned on the same side of the battery cell 10, so that the substrate 31 can be more conveniently connected with the battery protection plate 20, and the sampling piece 32 can more quickly transmit a temperature signal to the battery protection plate 20.

As shown in fig. 2 and 3, the temperature collection assembly 30 is disposed at a distance from the battery protection plate 20 in the width direction of the battery cell 10. With the above arrangement, the width direction of the battery cell 10 can be fully utilized for arrangement, so as to reduce the space occupied by the lithium battery.

In another embodiment of the present utility model, an electronic product is provided, which includes the lithium battery provided above. By adopting the electronic product, the heat of the battery cell 10 is transferred to the substrate 31, the heat of the substrate 31 can be collected by the sampling member 32, the temperature signal collected by the sampling member 32 is transferred to the battery protection plate 20, and the temperature collected by the sampling member 32 can be read by the battery protection plate 20. Thereby enabling temperature measurement of the cell 10. Compared with the mode of adopting silica gel to transfer heat and fix a temperature acquisition element, the temperature acquisition assembly 30 can be better attached with the battery cell 10 by utilizing the substrate 31, and the silica gel is not required to be used for fixing, so that the product process and the efficiency are optimized.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A temperature acquisition assembly, the temperature acquisition assembly comprising:

a substrate (31);

the sampling piece (32) is arranged on the substrate (31), the sampling piece (32) is arranged on one side of the substrate (31), and the other side of the substrate (31) is used for being attached to the battery cell (10);

a sampling line (40), wherein one end of the sampling line (40) is connected with the substrate (31), and the other end of the sampling line (40) is used for being connected with a battery protection plate (20);

the packaging shell (33) is provided with a packaging cavity and a packaging opening communicated with the packaging cavity, the packaging shell (33) is arranged on the substrate (31) through the packaging mask, and the sampling piece (32) is positioned in the packaging cavity.

2. The temperature acquisition assembly according to claim 1, wherein the substrate (31) comprises an FPC board (311).

3. The temperature acquisition assembly according to claim 2, wherein the substrate (31) further comprises a reinforcing plate (312), one side of the reinforcing plate (312) being attached to the FPC board (311), the other side of the reinforcing plate (312) being for attachment to the battery cell (10).

4. A temperature acquisition assembly according to claim 3, further comprising a heat conductive glue, one side of which is in adhesive connection with the reinforcing plate (312), and the other side of which is in adhesive connection with the electrical core (10).

5. A temperature acquisition assembly according to claim 3, wherein the reinforcement plate (312) is an aluminium plate.

6. The temperature acquisition assembly according to claim 1, characterized in that the sampling member (32) comprises an NTC thermistor.

7. A lithium battery, the lithium battery comprising:

a battery cell (10);

a battery protection plate (20) which is arranged at one end of the battery cell (10) and is electrically connected with the battery cell (10);

temperature acquisition assembly (30), one side of base plate (31) of temperature acquisition assembly (30) with electric core (10) are laminated mutually, sampling line (40) of temperature acquisition assembly (30) with battery protection shield (20) electricity is connected, temperature acquisition assembly (30) is the temperature acquisition assembly of any one of claims 1 to 6.

8. The lithium battery according to claim 7, wherein an end wall of the battery cell (10) at which the battery protection plate (20) is provided is attached to one side of the substrate (31).

9. The lithium battery according to claim 8, characterized in that the temperature acquisition assembly (30) is disposed at a distance from the battery protection plate (20) in the width direction of the battery cell (10).

10. An electronic product, characterized in that it comprises the lithium battery according to any one of claims 7 to 9.