CN211700361U

CN211700361U - Battery spring sheet structure suitable for button battery and electronic control unit comprising same

Info

Publication number: CN211700361U
Application number: CN202020203741.0U
Authority: CN
Inventors: 杨衍霖; 喻世民
Original assignee: Continental Automotive Research & Development Chongqing Co ltd; Continental Automotive Changchun Co Ltd
Current assignee: Continental Automotive Research & Development Chongqing Co ltd; Continental Automotive Changchun Co Ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-10-16
Anticipated expiration: 2030-02-25

Abstract

The utility model provides a be suitable for button cell's battery shell fragment structure, including anodal shell fragment and negative pole shell fragment. Wherein, anodal shell fragment includes: support surface, arc contact surface and anodal pin. The support surface is used for supporting the battery in the gravity direction; the arc-shaped contact surface extends upwards from the support surface, can partially surround the side surface of the battery and is matched with the side surface of the battery; the positive electrode pin extends downward from the support surface. One end of the negative elastic piece is provided with a top surface, and the other end of the negative elastic piece is provided with a negative pin; the supporting surface and the arc-shaped contact surface of the positive elastic sheet and the top surface of the negative elastic sheet form an accommodating cavity, and the accommodating cavity is used for accommodating a battery. The utility model discloses still provide an electronic control unit who contains above-mentioned battery shell fragment structure.

Description

Battery spring sheet structure suitable for button battery and electronic control unit comprising same

Technical Field

The utility model relates to an electronic equipment spare part field, in particular to battery shell fragment structure reaches electronic control unit who contains it.

Background

The main components in the automobile tire pressure sensor are a circuit board (usually adopting a printed circuit board PCB), a button cell used as a power supply, and a battery spring (comprising a positive spring and a negative spring) which electrically connects the button cell and the circuit board together.

The button cell in some prior art is assembled as shown in fig. 1a to 1 b: firstly, referring to fig. 1a, a positive elastic sheet 2 'and a negative elastic sheet 3' are respectively welded on the positive electrode and the negative electrode of the button cell 300 (usually done by a button cell supplier); then, referring to fig. 1b, the positive elastic sheet 2 'and the negative elastic sheet 3' are soldered on the PCB by soldering iron, and the button cell 300 is electrically connected with the PCB by the positive elastic sheet 2 'and the negative elastic sheet 3'.

Adopt this technical scheme to have some defects, for example, use the flatiron to weld the cycle length of being connected positive shell fragment, negative pole shell fragment and PCB, welding quality is poor, with high costs, and transport the product of being connected the spot welding of positive shell fragment, negative pole shell fragment and battery to the mill and carry out the production again and consume the material cost, do not have the benefit to production efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be suitable for button cell's battery shell fragment structure, including anodal shell fragment and negative pole shell fragment. Wherein, anodal shell fragment includes: support surface, arc contact surface and anodal pin. The support surface is used for supporting the battery in the gravity direction; the arc-shaped contact surface extends upwards from the support surface, can partially surround the side surface of the battery and is matched with the side surface of the battery; the positive electrode pin extends downward from the support surface. One end of the negative elastic piece is provided with a top surface, and the other end of the negative elastic piece is provided with a negative pin; the supporting surface and the arc-shaped contact surface of the positive elastic sheet and the top surface of the negative elastic sheet form an accommodating cavity, and the accommodating cavity is used for accommodating a battery.

The electric battery spring plate structure is mainly used for button batteries or batteries with similar structures. Only one surface of the column of the button cell is a negative electrode, usually the top, or the bottom, and the rest is a positive electrode. Thus, when the holding structure is provided, the positive electrode tab and the negative electrode tab should only contact the respective corresponding battery electrodes, but not the opposite electrodes. By adopting the technical scheme, the connection reliability between the elastic sheet and the battery and between the elastic sheet and the circuit board can be improved; after the battery is inserted into the cavity from the side face, the battery is not easy to fall off, and the production cost can be reduced.

Furthermore, the positive elastic sheet is provided with a plurality of first supporting feet, and the first supporting feet are arranged on two sides of the positive pin.

Further, the first supporting leg extends downwards from the supporting surface to a second plane, the second plane is parallel to the supporting surface, and the tail end of the first supporting leg extends in the second plane.

Further, the negative pole shell fragment has a plurality of second supporting legss, the second supporting legss set up in negative pole pin both sides.

Further, the second support leg extends downwardly from the top surface to a second plane, the second plane being parallel to the support surface, the distal end of the second support leg extending within the second plane.

Furthermore, the positive electrode elastic sheet and the negative electrode elastic sheet are respectively of an integrally formed structure.

Furthermore, the supporting surface of the positive elastic sheet is M-shaped, T-shaped or C-shaped.

Another object of the present invention is to provide an electronic control unit, which has the advantages of simple structure, easy production, high stability, high yield and low cost. The electronic control unit includes: the PCB assembly comprises a PCB and a battery spring piece structure provided by any one of the technical schemes, the battery spring piece structure is fixed on the PCB, and the positive pin and the negative pin of the battery spring piece structure are respectively connected with the PCB.

And the button battery is arranged in the accommodating cavity of the battery elastic sheet structure, a negative electrode of the button battery is contacted with the top surface of the negative electrode elastic sheet, and the side surface of the button battery is contacted with the arc-shaped contact surface of the positive electrode elastic sheet.

Further, the electronic control unit is a tire pressure sensor.

The utility model has the advantages that:

(1) the production period of the product is shortened;

(2) poor welding quality caused by using a soldering iron is avoided;

(3) cost savings due to simpler production processes and packaging;

(4) and the material cost is reduced.

Drawings

Fig. 1a to 1b show a prior art assembly process of a button cell;

fig. 2a is a battery spring structure according to an embodiment of the present invention;

FIG. 2b is a schematic diagram of a PCB assembly including the battery spring structure shown in FIG. 2 a;

fig. 3a is a structural diagram of the positive electrode spring plate of the embodiment shown in fig. 2 a;

FIG. 3b is a bottom view of FIG. 3 a;

fig. 4 is a structural view of a positive electrode shrapnel according to another embodiment of the present invention;

fig. 5 is a schematic structural view of a positive electrode shrapnel according to another embodiment of the present invention;

fig. 6 is a structural diagram of the negative electrode spring plate of the present invention.

Description of the element reference numerals

100 battery spring structure 100a accommodating cavity

2 positive pole spring plate

21 support surface 22 arc contact surface 23 anode pin 24 first support leg

3 negative pole spring plate

31 top 32 negative pin 33 second support leg

300 button cell

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 2a shows a battery spring structure 100 according to an embodiment of the present invention, which includes a positive spring 2 and a negative spring 3. With reference to fig. 3a, the positive electrode tab 2 includes: a support surface 21, an arc-shaped contact surface 22 and a positive electrode pin 23. The support surface 21 is for supporting the battery in the direction of gravity; the arc-shaped contact surface 22 extends upward from the support surface 21, can partially surround the side surface of the battery, and is matched with the side surface of the battery; positive electrode pin23 extends downward from support surface 21. With reference to fig. 6, one end of the negative electrode elastic sheet 3 has a top surface 31, and the other end has a negative electrode pin 32; the supporting surface 21 and the arc contact surface 22 of the positive electrode shrapnel 2 and the top surface 31 of the negative electrode shrapnel 3 form an accommodating cavity 100a, and the accommodating cavity 100a is used for accommodating a battery. The arc contact surface 22 is not limited to a continuous surface, and may be an intermittent surface; the number of the positive pins 23 or the negative pins 32 is not limited, and each of the positive pins 23 or the negative pins 32 may not be one; by adopting the technical scheme, the connection reliability between the elastic sheet and the battery and between the elastic sheet and the circuit board can be improved, and the production cost is reduced.

Fig. 3a shows the structure of the positive electrode shrapnel 2 of the embodiment of fig. 2a, the positive electrode shrapnel 2 has a plurality of first supporting legs 24, and the first supporting legs 24 are disposed at two sides of the positive electrode pin23 for supporting the circuit board. That is, the first supporting leg 24 extends downward from the supporting surface 21 to a second plane parallel to the supporting surface 21, the second plane being a plane in which the upper surface of the PCB is located, and the distal end of the first supporting leg 24 extends in the plane. The "first" herein does not mean a limitation on the number thereof, but the first support leg 24 is usually plural. As shown in the bottom view of fig. 3b, in the present embodiment, the first supporting legs 24 are two pairs, i.e. 4; for another example, fig. 4 shows a schematic view of a positive electrode shrapnel 2 according to another embodiment of the present invention, which has a pair of first supporting legs 24, i.e. 2. In other embodiments of the present invention, the supporting legs may not be provided, as shown in fig. 5.

Fig. 6 shows the structure of the negative electrode spring 3 of the present invention, the negative electrode spring 3 has a plurality of second supporting legs 33, the second supporting legs 33 extend downward from the top surface 31 along nearby pin32, and the ends of the second supporting legs 33 also extend in the second plane (i.e. where the upper surface of the PCB is located).

By adopting the technical scheme, the connecting positions of the positive electrode elastic sheet 2 and the negative electrode elastic sheet 3 and the circuit board can be limited, the process difficulty is reduced, the assembly accuracy is improved, and the yield and the production efficiency are improved.

As shown in any one of fig. 3a to 6, the positive electrode tab 2 and the negative electrode tab 3 are each integrally formed. Namely, the positive elastic sheet 2 and the negative elastic sheet 3 can be formed by cutting and bending a whole structure, so that the production difficulty is reduced. Furthermore, the support surface 21 may be designed in any configuration as required to provide good support for the battery, for example, in the present application, the support surface 21 of the embodiment shown in fig. 3a and 3b is M-shaped; the support surface 21 of the embodiment shown in fig. 4 is T-shaped; the support surface 21 of the embodiment shown in fig. 5 is C-shaped.

The utility model also provides an electronic control unit, include: PCB subassembly, as shown in FIG. 2b, including PCB and this application battery shell fragment structure 100, battery shell fragment structure 100 is fixed in on the PCB, battery shell fragment structure 100 anodal pin23 with negative pole pin32 is connected with the PCB respectively. Further, the battery comprises a button cell 300, which is arranged in the accommodating cavity 100a of the battery spring plate structure 100, wherein a negative electrode of the button cell 300 is in contact with the top surface 31 of the negative electrode spring plate 3, and a side surface of the button cell 300 is in contact with the arc-shaped contact surface 22 of the positive electrode spring plate 2. In any of the embodiments of the present application, the electronic control unit is, for example, but not limited to, a tire pressure sensor.

Anodal shell fragment 2, negative pole shell fragment 3 be connected with the circuit board mainly through reflow soldering, after the reflow soldering, anodal shell fragment 2 and negative pole shell fragment 3 are very firm on the circuit board. Compared with the prior art shown in figure 1a, the electric soldering iron has the advantages of short time consumption and high accuracy. The curved contact surfaces 22, 31 of any of the embodiments of the present application may be connected to the battery by spot welding.

For example, in the electronic control unit provided by the embodiment of the present application, the assembly process of the PCB assembly may be:

firstly, welding the positive elastic sheet 2 and the negative elastic sheet 3 with the PCB through reflow soldering;

secondly, inserting the battery into an accommodating cavity 100a formed between the positive elastic sheet 2 and the negative elastic sheet 3;

and thirdly, welding the arc-shaped contact surface 22 and the top surface 31 with the battery through spot welding.

Through the improvement to the battery shell fragment structure for anodal shell fragment 2 and negative pole shell fragment 3 need not in advance to weld with the battery in supplier department, and then with the PCB welding in the mill, but can directly accomplish the production of whole electronic control unit in a mill, have simplified production flow, have shortened production cycle, have reduced the article loss in the transportation of commentaries on classics factory to and packing, cost of transportation, improved product quality.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a be suitable for button cell's battery shell fragment structure which characterized in that, includes anodal shell fragment and negative pole shell fragment:

the positive pole shell fragment includes:

a support surface for supporting the battery in a direction of gravity;

the arc-shaped contact surface extends upwards from the supporting surface, can partially surround the side surface of the battery and is matched with the side surface of the battery;

a positive electrode pin extending downward from the support surface;

one end of the negative elastic piece is provided with a top surface, and the other end of the negative elastic piece is provided with a negative pin;

the supporting surface and the arc-shaped contact surface of the positive elastic sheet and the top surface of the negative elastic sheet form an accommodating cavity, and the accommodating cavity is used for accommodating a battery.

2. The battery spring plate structure of claim 1, wherein the positive spring plate has a plurality of first supporting legs, and the first supporting legs are disposed on two sides of the positive pin.

3. The battery leaf spring structure of claim 2, wherein the first leg extends downwardly from the support surface to a second plane, the second plane being parallel to the support surface, the distal end of the first leg extending within the second plane.

4. The battery dome structure of claim 1, wherein the negative dome has a plurality of second support legs disposed on two sides of the negative pin.

5. The battery dome structure of claim 4, wherein the second support leg extends downwardly from the top surface to a second plane, the second plane being parallel to the support surface, a distal end of the second support leg extending within the second plane.

6. The battery spring plate structure of claim 1, wherein the positive spring plate and the negative spring plate are respectively of an integrally formed structure.

7. The battery spring plate structure according to any one of claims 1 to 6, wherein the supporting surface is M-shaped, T-shaped, or C-shaped.

8. An electronic control unit, comprising:

the PCB assembly comprises a PCB and the battery spring piece structure according to any one of claims 1-7, wherein the battery spring piece structure is fixed on the PCB, and the positive pin and the negative pin of the battery spring piece structure are respectively connected with the PCB.

9. The electronic control unit according to claim 8, comprising a button cell, wherein the button cell is disposed in the accommodating cavity of the battery spring structure, a negative electrode of the button cell contacts with the top surface of the negative spring, and a side surface of the button cell contacts with the arc-shaped contact surface of the positive spring.

10. The electronic control unit of claim 8, wherein the electronic control unit is a tire pressure sensor.