CN109119709B - Electronic device - Google Patents

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Publication number
CN109119709B
CN109119709B CN201710481144.7A CN201710481144A CN109119709B CN 109119709 B CN109119709 B CN 109119709B CN 201710481144 A CN201710481144 A CN 201710481144A CN 109119709 B CN109119709 B CN 109119709B
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China
Prior art keywords
battery
thermistor
cell
electronic device
battery core
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CN201710481144.7A
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Chinese (zh)
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CN109119709A (en
Inventor
郑忠香
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to CN201710481144.7A priority Critical patent/CN109119709B/en
Publication of CN109119709A publication Critical patent/CN109119709A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

The present disclosure provides an electronic device including a case, a main board disposed in the case, and a battery pack. The shell is provided with a battery jar for accommodating the battery assembly, the battery assembly comprises a battery core, a battery core protection plate and a thermistor for detecting the temperature of the battery core, and the thermistor is electrically connected with the mainboard; the shell is further provided with a containing groove communicated with the battery jar, and the thermistor is arranged in the containing groove and is in contact connection with the battery core. The electronic equipment of the present disclosure sets the thermistor on the housing so as to be away from the interference of the heat generating device, thereby avoiding the heat generated by the heat generating device from affecting the detection accuracy of the thermistor, so as to improve the detection accuracy of the thermistor.

Description

Electronic device
Technical Field
The present disclosure relates to electronic devices, and particularly to an electronic device.
Background
In the related art, a thermistor is assembled on a protection plate of a battery, and the protection plate and the battery are packaged together. The thermistor may cause a difference between the detected battery usage temperature and the battery core temperature due to a large battery current, a large protection board resistance, or a slow heat dissipation, a large heat generation amount of devices around the thermistor, and the like. The temperature detected by the thermistor is different from the actual temperature of the battery, so that the battery is overcharged or not fully charged, and the problems of service life reduction, expansion, insufficient electric quantity and the like of the battery are caused.
Disclosure of Invention
The present disclosure provides an electronic device to solve the deficiencies in the related art.
According to a first aspect of embodiments of the present disclosure, an electronic device is provided. The electronic equipment comprises a shell, a mainboard and a battery assembly, wherein the mainboard and the battery assembly are arranged in the shell, a battery jar for accommodating the battery assembly is arranged on the shell, the battery assembly comprises a battery core, a battery core protection plate and a thermistor for detecting the temperature of the battery core, and the thermistor is electrically connected with the mainboard;
the shell is further provided with a containing groove communicated with the battery jar, and the thermistor is arranged in the containing groove and is in contact connection with the battery core.
Preferably, the thermistor is electrically connected with the mainboard through a wire, and the wire is arranged on the mainboard.
Preferably, when the battery assembly is accommodated in the battery jar, the battery core protection plate is located at one side of the battery jar, and the accommodating tank is far away from one side of the battery jar where the battery core protection plate is located.
Preferably, the thermistor is a negative temperature coefficient thermistor.
According to a second aspect of embodiments of the present disclosure, an electronic device is provided. The electronic equipment comprises a shell, a mainboard and a battery assembly, wherein the mainboard and the battery assembly are arranged in the shell, the battery assembly comprises a battery cell, a battery cell protection plate and a thermistor for detecting the temperature of the battery cell, and the thermistor is electrically connected with the mainboard;
the battery core protection board is arranged on the outer surface of the battery core, and the thermistor is arranged on the outer surface of the battery core and far away from the position of the battery core protection board.
Preferably, the thermistor and the battery cell protection plate are arranged on the same side of the outer surface of the battery cell.
Preferably, the battery assembly further comprises a cover, and the cover is used for packaging the thermistor and the battery cell protection board on the battery cell.
Preferably, the thermistor is electrically connected with the battery cell protection board, and the battery cell protection board is electrically connected with the main board.
Preferably, the thermistor is a negative temperature coefficient thermistor.
The electronic equipment provided by the disclosure has the following technical effects:
the thermistor is arranged on the shell to be far away from the interference of the heating device, so that the heat generated by the heating device is prevented from influencing the detection accuracy of the thermistor, and the detection accuracy of the thermistor is improved.
The thermistor is arranged on the battery core and is far away from the battery core protection plate, so that the detection accuracy of the thermistor is prevented from being influenced by heat generated by the battery core protection plate, and the detection accuracy of the thermistor is improved.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of an electronic device according to another exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a schematic structural diagram of an electronic device according to an exemplary embodiment of the present disclosure. The electronic device may be a mobile phone, a tablet computer, or an e-reader. The electronic device includes a housing 101, a main board 103 disposed in the housing 101, and a battery pack. The battery assembly comprises a battery cell 102, a battery cell protection plate 107 and a thermistor 107 for detecting the temperature of the battery cell. The casing 101 is opened with a battery jar 106 for accommodating the battery assembly, and an accommodating groove 104 communicated with the battery jar 106, and the thermistor 105 is arranged in the accommodating groove 104 and is in contact connection with the battery cell 102, so that the thermistor 105 can detect the temperature of the battery cell 102.
In this embodiment, the thermistor 105 is disposed in the accommodating groove 104 on the housing 101, so that the accommodating groove 104 can prevent heat generated by other devices of the electronic device from interfering with the thermistor 105, and the thermistor 105 is only in contact with the battery cell 102 for temperature detection, thereby improving detection accuracy of the thermistor.
In the embodiment shown in fig. 1, the receiving groove 104 is provided at the right side edge of the battery groove 105. After the thermistor 105 is placed in the accommodating groove 104, the battery cell 102 is placed in the battery groove 106, and the thermistor 105 can be in contact connection with the battery cell 102, so as to detect the service temperature of the battery cell 102.
Of course, the accommodating groove 104 may be disposed at other positions of the housing 101 according to different design requirements. For example, the receiving groove 104 may be disposed at a left side of the battery groove 106, an upper side of the battery groove 106, a lower side of the battery groove 106, a bottom of the battery groove 106, or the like.
Further, when the battery assembly is accommodated in the battery jar 106, the electric core protection plate 107 is located at one side of the battery jar 106, and the accommodating groove 104 is far away from one side of the battery jar 106 where the electric core protection plate 107 is located.
The cell protection plate 107 is used to protect the cell 102 when the cell 102 is charged. In some embodiments, the cell protection board 107 includes a primary protection circuit and a secondary protection circuit for protecting the cell. The cell protection plate 107 is encapsulated at the end of the cell 102. When the battery assembly is placed in the battery well 106 in the orientation shown in fig. 1, the battery core 102 is engaged with the battery well 106, and the battery core protection plate 107 is attached to the side 108 of the battery well 106. The accommodating groove 104 is disposed on the other side of the battery groove 106, and is far away from the side 108 of the battery groove 106, and further far away from the battery cell protection plate 107. In such an embodiment, the thermistor 105 disposed in the accommodating groove 104 is far away from the cell protection plate 107, and the heat generated by the cell protection plate 107 cannot interfere with the thermistor 105 to detect the temperature of the cell 102, so as to improve the detection accuracy of the thermistor 105.
Further, the thermistor 105 is electrically connected to the main board 103 through a lead (not shown) that is routed on the main board 103. In such an embodiment, the thermistor 105 is directly electrically connected to the main board 103, and is not electrically connected to the main board through the cell protection board, so that the wiring manner of the thermistor is changed. A software system of the electronic device may control whether the battery cell 102 is charged according to the cell temperature detected by the thermistor 105. For example, the temperature of the battery cell 102 detected by the thermistor 105 is an actual operating temperature of the battery cell, and when the battery cell temperature reaches below a critical temperature, the battery cell charging is stopped or the current and voltage are charged; stopping charging the battery cell or charging the current voltage when the temperature of the battery cell reaches above a critical temperature; and when the temperature of the battery cell is normal, charging the battery cell.
In some embodiments, the thermistor 105 may be a Negative Temperature Coefficient thermistor (or NTC) thermistor, which is a type of sensor resistance that decreases with increasing Temperature.
In the foregoing embodiment, the thermistor 105 is disposed on the casing 101 and is in contact connection with the battery cell 102, so that the thermistor 105 is far away from the interference of the heating device, and thus the actual use temperature of the battery cell 102 can be accurately detected, and it can be further ensured that the battery cell 102 is fully charged with electric energy, so as to improve the use experience of a user, and be more beneficial to the use safety of a battery (for example, preventing over-charging of the battery cell).
Fig. 2 is a schematic structural diagram of an electronic device according to another exemplary embodiment of the present disclosure. The electronic device may be a mobile phone, a tablet computer, or an e-reader. The electronic device comprises a shell 201, a main board 203 arranged in the shell 201, and a battery assembly, wherein the battery assembly comprises a battery cell 202, a battery cell protection plate 204, and a thermistor 205 for detecting the temperature of the battery cell. The cell protection plate 204 is disposed on the outer surface of the cell 202, and the thermistor 205 is disposed on the outer surface of the cell 202 and away from the cell protection plate 204.
In this embodiment, the thermistor 205 is separately disposed on the battery cell 202, so that the thermistor 205 is far away from the battery cell protection plate 204, thereby avoiding the heat generated by the battery cell protection plate 204 from interfering with the thermistor 105, and improving the detection accuracy of the thermistor.
According to different design requirements, the thermistor 205 may be disposed on any side surface of the battery cell 202, so that the thermistor 205 and the battery cell protection plate 204 are kept at a certain distance, and the thermistor 205 is not interfered by the battery cell protection plate 204 due to heat dissipation.
In the embodiment shown in fig. 2, the thermistor 205 and the cell protection plate 204 are disposed on the same side of the outer surface of the cell 202. The thermistor 205 and the cell protection plate 204 are provided on the side surface 206 of the cell. The thermistor 205 is separately disposed on a side surface of the battery cell 202 to detect a temperature of the battery cell 202, and the battery cell protection board 204 includes a primary protection circuit and a secondary protection circuit for protecting the battery cell, so as to protect the battery cell 202 during charging. In an embodiment, the battery assembly further includes a cover 207, and the cover 207 is used for encapsulating the thermistor 205 and the cell protection plate 204 on the cell 202.
Further, the thermistor 205 is electrically connected to the cell protection plate 204, and the cell protection plate 204 is electrically connected to the main board 203. In such an embodiment, the thermistor 205 is electrically connected to the main board 203 through the cell protection plate 204. A software system of the electronic device may control whether the battery cell is charged according to the battery cell temperature detected by the thermistor 205. For example, the temperature of the battery cell 203 detected by the thermistor 205 is an actual operating temperature of the battery cell, and when the battery cell temperature reaches below a critical temperature, the battery cell charging is stopped or the current and voltage are charged; stopping charging the battery cell or charging the current voltage when the temperature of the battery cell reaches above a critical temperature; and when the temperature of the battery cell is normal, charging the battery cell.
In some embodiments, the thermistor 105 may be a Negative Temperature Coefficient thermistor (or NTC) thermistor, which is a type of sensor resistance that decreases with increasing Temperature.
In the above embodiment, without providing an accommodating groove on the casing, the thermistor 205 is only required to be disposed on the battery cell 202 and away from the battery cell protection plate 204, so that the heat generated by the battery cell protection plate 204 can be prevented from interfering with the thermistor 205, and the detection accuracy of the thermistor 205 can be improved.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (8)

1. An electronic device is characterized by comprising a shell, a main board and a battery assembly, wherein the main board and the battery assembly are arranged in the shell, a battery jar used for accommodating the battery assembly is arranged on the shell, the battery assembly comprises a battery core, a battery core protection plate and a thermistor used for detecting the temperature of the battery core, and the thermistor is electrically connected with the main board;
the shell is also provided with an accommodating groove communicated with the battery groove, and the thermistor is arranged in the accommodating groove and is in contact connection with the battery core;
when the battery pack is accommodated in the battery jar, the battery core protection plate is positioned on one side of the battery jar, and the holding tank is far away from one side of the battery jar where the battery core protection plate is positioned.
2. The electronic device of claim 1, wherein the thermistor is electrically connected to the motherboard by a wire, the wire being routed on the motherboard.
3. The electronic device of claim 1, wherein the thermistor is a negative temperature coefficient thermistor.
4. An electronic device is characterized by comprising a shell, a main board arranged in the shell and a battery assembly, wherein the battery assembly comprises a battery cell, a battery cell protection board and a thermistor used for detecting the temperature of the battery cell, and the thermistor is electrically connected with the main board;
the battery core protection board is arranged on the outer surface of the battery core, and the thermistor is arranged on the outer surface of the battery core and far away from the position of the battery core protection board.
5. The electronic device of claim 4, wherein the thermistor and the cell protection plate are disposed on the same side of the outer surface of the cell.
6. The electronic device of claim 4, wherein the battery assembly further comprises a cover configured to encapsulate the thermistor and the cell protection board on the cell.
7. The electronic device of claim 4, wherein the thermistor is electrically connected to the cell protection board, and wherein the cell protection board is electrically connected to the motherboard.
8. The electronic device of claim 4, wherein the thermistor is a negative temperature coefficient thermistor.
CN201710481144.7A 2017-06-22 2017-06-22 Electronic device Active CN109119709B (en)

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CN201710481144.7A CN109119709B (en) 2017-06-22 2017-06-22 Electronic device

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CN109119709B true CN109119709B (en) 2021-06-29

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Publication number Priority date Publication date Assignee Title
CN110364654B (en) * 2019-07-05 2022-08-05 Oppo广东移动通信有限公司 Battery module and electronic equipment thereof

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN106463992A (en) * 2016-05-27 2017-02-22 广东欧珀移动通信有限公司 Battery protection plate, battery and mobile terinal

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Publication number Priority date Publication date Assignee Title
KR100867923B1 (en) * 2007-10-30 2008-11-10 삼성에스디아이 주식회사 Secondary battery with protection circuit module
US9331324B2 (en) * 2009-02-09 2016-05-03 Samsung Sdi Co., Ltd. Connector assembly and battery pack having the same
CN201466143U (en) * 2009-03-17 2010-05-12 天津力神电池股份有限公司 Lithium ion battery capable of improving PTC protection function
US9088042B2 (en) * 2009-07-08 2015-07-21 Samsung Sdi Co., Ltd. Battery pack having elongate curved lead plates
CN102105026A (en) * 2009-12-22 2011-06-22 鸿富锦精密工业（深圳）有限公司 Electronic device
CN203690380U (en) * 2014-01-14 2014-07-02 戴含晴 Drawer-type mobile phone battery holder
CN105912087B (en) * 2016-04-29 2019-01-18 北京小米移动软件有限公司 A kind of mobile terminal

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Publication number Priority date Publication date Assignee Title
CN106463992A (en) * 2016-05-27 2017-02-22 广东欧珀移动通信有限公司 Battery protection plate, battery and mobile terinal

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