CN211090150U - Circuit board structure and lithium ion battery structure comprising same - Google Patents
Circuit board structure and lithium ion battery structure comprising same Download PDFInfo
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- CN211090150U CN211090150U CN201921484423.XU CN201921484423U CN211090150U CN 211090150 U CN211090150 U CN 211090150U CN 201921484423 U CN201921484423 U CN 201921484423U CN 211090150 U CN211090150 U CN 211090150U
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- circuit board
- temperature sensor
- adapter plate
- battery cell
- temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application discloses circuit board structure includes: a circuit board provided with electronic components; one end of the adapter plate is arranged on the circuit board; and the temperature sensor is arranged at the other end of the adapter plate. The circuit board structure utilizes one end of the adapter plate to be arranged on the circuit board, the other end of the adapter plate is used for arranging the temperature sensor, the temperature sensor is not required to be arranged on the circuit board, the temperature sensor is used for being attached to an object to be detected to detect the temperature of the object to be detected, the temperature sensor is not influenced by the temperature of the circuit board, and the accuracy of detecting the temperature of the object to be detected is improved; the adapter plate enables the temperature sensor to be easily attached to the object to be detected, and electric connection of the circuit board is easily achieved, so that cost is reduced. The application also discloses a lithium ion battery structure containing the circuit board structure.
Description
Technical Field
The application relates to the field of batteries, in particular to a circuit board structure and a lithium ion battery structure comprising the same.
Background
With the rapid development of the rapid charging technology, the heat of the battery also increases with the increase of the current of the rapid charging, and how to rapidly and accurately detect the heat generated by charging and discharging the battery has become one of the bottlenecks in detecting the development of the cell temperature. Currently, in the lithium battery industry, a patch type NTC (Negative Temperature Coefficient) and a wire type NTC are adopted for detecting the battery core Temperature.
Paster type NTC is because of small, and is with low costs, simple process is general in market, the one end of electric core includes the pit, paster type NTC is established on PCB (Printed Circuit Board), then wrap up PCB to the pit of electric core and make the pit face of paster type NTC near the pit of electric core, the temperature rise that receives PCB very easily when establishing paster type NTC on PCB and listening electric core temperature influences, the temperature that the temperature of actual response mostly comes from PCB is not the temperature of electric core, lead to the temperature of listening electric core inaccurate.
The head used for detecting the temperature on the wire type NTC is connected to the PCB through the wire, the head is directly bonded to the pit surface of the battery cell through the heat-conducting glue, the temperature of the battery cell can be effectively and directly detected, but the volume of the wire type NTC is smaller, manual welding is needed, automatic welding of equipment cannot be used, and the cost is high.
SUMMERY OF THE UTILITY MODEL
In view of the above, a circuit board structure is needed to effectively detect the temperature of the object to be tested and reduce the cost.
The application provides a circuit board structure, includes:
a circuit board provided with electronic components;
one end of the adapter plate is arranged on the circuit board;
and the temperature sensor is arranged at the other end of the adapter plate.
According to some embodiments of the present application, the temperature sensor is a surface mount negative temperature coefficient thermistor.
According to some embodiments of the present application, the interposer is a flexible circuit board.
According to some embodiments of the application, the circuit board structure further comprises a stiffening plate, wherein the stiffening plate is arranged on one side of the adapter plate, which side deviates from the temperature sensor.
According to some embodiments of the application, the projection of the stiffening plate on the adapter plate surrounds the projection of the temperature sensor on the adapter plate.
According to some embodiments of the present application, the temperature sensor is attached to the interposer by a surface mount technology, and the interposer is attached to the circuit board by a surface mount technology.
According to some embodiments of the present application, the interposer is provided with a plurality of solder holes and is soldered to the circuit board through the solder holes.
The application also provides a lithium ion battery structure, which comprises a battery cell and the circuit board structure;
the circuit board is arranged at one end of the battery cell;
one side of the temperature sensor, which is far away from the adapter plate, is attached to the battery cell;
the temperature sensor is electrically connected with the circuit board through the adapter plate.
According to some embodiments of the present application, further comprising a cushion;
the cushion pad is attached to the battery cell, and the temperature sensor is attached to one side, away from the battery cell, of the cushion pad;
the buffer pad is used for conducting heat and insulating the battery cell and the temperature sensor.
According to some embodiments of the present application, the temperature sensor is bonded to the electric core by a thermally conductive adhesive.
The circuit board structure utilizes one end of the adapter plate to be arranged on the circuit board, the other end of the adapter plate is used for arranging the temperature sensor, the temperature sensor is not required to be arranged on the circuit board, the temperature sensor is used for being attached to an object to be detected to detect the temperature of the object to be detected, the temperature sensor is not influenced by the temperature of the circuit board, and the accuracy of detecting the temperature of the object to be detected is improved; the adapter plate enables the temperature sensor to be easily attached to the object to be detected, and electric connection of the circuit board is easily achieved, so that cost is reduced.
The lithium ion battery structure comprising the circuit board structure has high accuracy of detecting the temperature of the battery core.
Drawings
Fig. 1 is a schematic structural diagram of a lithium ion battery structure according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of the lithium ion battery structure of fig. 1 taken along line II-II.
Fig. 3 is an exploded view of the lithium ion battery shown in fig. 1 without the buffer pad and the thermal conductive paste.
Fig. 4 is a schematic structural diagram of the circuit board structure of fig. 1 with the circuit board removed.
Fig. 5 is a schematic structural diagram of the circuit board structure in fig. 4 with another view angle of the circuit board removed.
Fig. 6 is a schematic diagram of soldering of the circuit board structure of fig. 1.
Description of the main elements
Lithium ion battery structure 200
Concave 2011
Heat-conducting glue 203
Cushion pad 205
Weld hole 21
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1 and fig. 2, an embodiment of the present application provides a circuit board structure 100, which includes a circuit board 10, an interposer 20, and a temperature sensor 30. The circuit board 10 is provided with electronic components. One end of the interposer 20 is disposed on the circuit board 10, and the temperature sensor 30 is disposed on the other end of the interposer 20. The temperature sensor 30 is used for contacting an object to be measured to detect the temperature of the object to be measured.
In an embodiment, the object to be tested is a battery cell 201 of a lithium ion battery structure 200, but is not limited thereto. For example, in other embodiments, the object to be measured may also be a power supply structure such as a chip or a non-lithium ion battery.
The circuit board 10 is disposed at one end of the battery cell 201. One side of the temperature sensor 30 facing away from the interposer 20 is attached to the battery cell 201. The temperature sensor 30 is electrically connected to the circuit board 10 through the interposer 20. The temperature sensor 30 detects the temperature of the battery cell 201 and can feed back the temperature to the circuit board 10. The circuit board 10 transmits the temperature detected by the temperature sensor 30 to the battery cell 201 to a terminal or a processor.
In an embodiment, the temperature sensor 30 is a chip negative temperature coefficient thermistor, but is not limited thereto. It is understood that in other embodiments, the temperature sensor 30 may be a positive temperature coefficient thermistor.
Referring to fig. 2 and fig. 3, an end of the battery cell 201 facing the circuit board 10 includes a concave portion 2011. Specifically, when the battery cell 201 is packaged, a top sealing edge 202 is formed at a head portion of one side of a tab (not shown). A first deep pit 2021 and a second shallow pit 2023 are formed in the head of the battery cell 201 on two sides of the top seal edge 202. In an embodiment, the concave portion 2011 is the first concave portion 2021 with a deeper depth on one side of the top seal edge 202, but is not limited thereto. In one embodiment, the circuit board 10 is substantially perpendicular to the surface 2013 of the recess 2011, but is not limited thereto. In an embodiment, the interposer 20 is a flexible circuit board, but is not limited thereto. One end of the interposer 20 is parallel to the circuit board 10 and is connected to the circuit board 10 by soldering. The other end of the adapter plate 20 is bent to be parallel to the pit surface 2013, and the temperature sensor 30 is disposed at the other end of the adapter plate 20 and located on one side of the adapter plate 20 facing the pit surface 2013. The temperature sensor 30 is adhered to the pit surface 2013 by using a heat-conducting glue 203. The thermal conductive adhesive 203 insulates and conducts heat between the temperature sensor 30 and the battery cell 201.
In one embodiment, the heat conductive adhesive 203 covers a portion of the temperature sensor 30. It is understood that, in other embodiments, the heat conducting glue 203 may cover all of the temperature sensors 30 disposed on the interposer 20. As long as the thermally conductive adhesive 203 conducts heat and insulates the temperature sensor 30 and the battery cell 201.
It is understood that, in other embodiments, the circuit board 10 may be disposed at other angles with respect to the pit surface 2013, for example, the circuit board 10 is disposed parallel to the pit surface 2013.
It is understood that, in other embodiments, the temperature sensor 30 may also be adhered to other positions of the battery cell 201, for example, the temperature sensor 30 is adhered to a side of the battery cell 201 parallel to the circuit board 10.
It is understood that, in other embodiments, the interposer 20 may also be a rigid circuit board or a rigid-flex board, as long as the interposer 20 can attach the temperature sensor 30 to the battery cell 201 and is electrically connected to the circuit board 10.
Referring to fig. 2, fig. 4 and fig. 6, a plurality of solder holes 21 are formed at an end of the interposer 20 close to the circuit board 10. The interposer 20 is soldered to the circuit board 10 through the solder holes 21. The temperature sensor 30 is attached to the interposer 20 by a surface mount technology, and specifically, a circuit layer 23 is disposed inside the interposer 20. The wiring layer 23 electrically connects the solder hole 21 and the temperature sensor 30, respectively. It is understood that in other embodiments, the interposer 20 may be attached to the circuit board 10 by surface mounting techniques.
Referring to fig. 2 and fig. 5, the circuit board structure 100 further includes a stiffener 40. The stiffening plate 40 is disposed on a side of the adapter plate 20 facing away from the temperature sensor 30. The projection of the stiffening plate 40 on the adapter plate 20 surrounds the projection of the temperature sensor 30 on the adapter plate 20, so as to improve the strength of the adapter plate 20 at the temperature sensor 30. In an embodiment, the reinforcing plate 40 is a glass cloth substrate, but is not limited thereto. For example, in another embodiment, the reinforcing plate 40 may be a composite substrate of glass fiber and paper. It is understood that in other embodiments, the stiffening plate 40 may be omitted.
Referring to fig. 1 and fig. 2, the li-ion battery structure 200 further includes a buffer pad 205. The buffer pad 205 is attached to the battery cell 201. In an embodiment, the buffer pad 205 is attached to the pit surface 2013 of the battery cell 201. The temperature sensor 30 is attached to the side of the cushion pad 205, which is away from the pit surface 2013, by using a heat-conducting glue 203. The buffer pad 205 is capable of thermally conducting and insulating the battery cell 201 and the temperature sensor 30. It is understood that, in other embodiments, the buffer pad 205 may be omitted, and the temperature sensor 30 is directly attached to the pit surface 2013 of the battery cell 201 by using the thermal conductive adhesive 203.
In the circuit board structure 100, one end of the adapter plate 20 is disposed on the circuit board 10, and the other end of the adapter plate is used for disposing the temperature sensor 30, the temperature sensor 30 is not required to be disposed on the circuit board 10, and the temperature sensor 30 is used to be attached to an object to be detected to detect the temperature of the object to be detected, and is not affected by the temperature of the circuit board 10, so that the accuracy of detecting the temperature of the object to be detected is improved; the adapter plate 20 enables the temperature sensor 30 to be easily attached to the object to be measured, and the circuit board 10 is easily electrically connected, so that the cost is reduced.
The lithium ion battery structure 200 including the circuit board structure 100 has high accuracy of detecting the temperature of the battery cell 201.
Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.
Claims (10)
1. The utility model provides a circuit board structure, includes the circuit board, sets up electronic components, its characterized in that still includes:
one end of the adapter plate is arranged on the circuit board;
and the temperature sensor is arranged at the other end of the adapter plate.
2. The circuit board structure of claim 1, wherein: the temperature sensor is a patch type negative temperature coefficient thermistor.
3. The circuit board structure of claim 1, wherein: the adapter plate is a flexible circuit board.
4. The circuit board structure of claim 1, wherein: the circuit board structure further comprises a reinforcing plate, and the reinforcing plate is arranged on one side, deviating from the temperature sensor, of the adapter plate.
5. The circuit board structure of claim 4, wherein: the projection of the reinforcing plate on the adapter plate surrounds the projection of the temperature sensor on the adapter plate.
6. The circuit board structure of claim 1, wherein: the temperature sensor is attached to the adapter plate through a surface assembly technology, and the adapter plate is attached to the circuit board through the surface assembly technology.
7. The circuit board structure of claim 1, wherein: the adapter plate is provided with a plurality of welding holes and is welded on the circuit board through the welding holes.
8. The utility model provides a lithium ion battery structure, includes electric core, its characterized in that:
further comprising a circuit board structure according to any of claims 1-7;
the circuit board is arranged at one end of the battery cell;
one side of the temperature sensor, which is far away from the adapter plate, is attached to the battery cell;
the temperature sensor is electrically connected with the circuit board through the adapter plate.
9. The lithium ion battery structure of claim 8, wherein: the utility model also comprises a buffer cushion;
the cushion pad is attached to the battery cell, and the temperature sensor is attached to one side, away from the battery cell, of the cushion pad;
the buffer pad is used for conducting heat and insulating the battery cell and the temperature sensor.
10. The lithium ion battery structure of claim 8, wherein: the temperature sensor is bonded to the battery cell through heat-conducting glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921484423.XU CN211090150U (en) | 2019-09-05 | 2019-09-05 | Circuit board structure and lithium ion battery structure comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921484423.XU CN211090150U (en) | 2019-09-05 | 2019-09-05 | Circuit board structure and lithium ion battery structure comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211090150U true CN211090150U (en) | 2020-07-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921484423.XU Active CN211090150U (en) | 2019-09-05 | 2019-09-05 | Circuit board structure and lithium ion battery structure comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN211090150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021125023A1 (en) | 2021-09-28 | 2023-03-30 | Bayerische Motoren Werke Aktiengesellschaft | Battery with a temperature sensor and motor vehicle |
-
2019
- 2019-09-05 CN CN201921484423.XU patent/CN211090150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021125023A1 (en) | 2021-09-28 | 2023-03-30 | Bayerische Motoren Werke Aktiengesellschaft | Battery with a temperature sensor and motor vehicle |
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