CN210957883U - Battery over-temperature protection device and electronic equipment - Google Patents
Battery over-temperature protection device and electronic equipment Download PDFInfo
- Publication number
- CN210957883U CN210957883U CN201922480791.3U CN201922480791U CN210957883U CN 210957883 U CN210957883 U CN 210957883U CN 201922480791 U CN201922480791 U CN 201922480791U CN 210957883 U CN210957883 U CN 210957883U
- Authority
- CN
- China
- Prior art keywords
- temperature
- conducting layer
- battery
- electric connection
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a battery excess temperature protection device and electronic equipment. The device comprises: the battery comprises a battery cell, a first conducting layer, a second conducting layer, a power management module and a temperature detection module; the first conducting layer and the second conducting layer are respectively arranged on the first outer surface and the second outer surface of the battery cell; the first conducting layer is provided with a first electric connection end and a second electric connection end, the first electric connection end is electrically connected with the power management module, and the second electric connection end is electrically connected with the first end of the temperature detection module; the second conducting layer is provided with a third electric connection end and a fourth electric connection end, the third electric connection end is electrically connected with the power management module, and the fourth electric connection end is electrically connected with the second end of the temperature detection module; the first resistance value of the first conductive layer and the second resistance value of the second conductive layer are inversely proportional to the cell temperature of the battery cell. The utility model discloses utilize the characteristic of conducting layer deformation by heating to detect the real-time temperature of electric core surface, guarantee the electric core security under heavy current charging process and the heavy load use scene.
Description
Technical Field
The utility model relates to the field of communication technology, especially, relate to a battery excess temperature protection device and electronic equipment.
Background
At present, the fast charging scheme of the electronic equipment is more and more mature, the charging power is also greatly increased, and with the further popularization of the 5G technology, how to keep absolute safety of the battery cell of the electronic equipment in the background of high-power large-current charging becomes an important research subject. The mode that present electronic equipment manufacturer generally adopted Negative Temperature Coefficient (NTC) resistance detects battery temperature, lay out NTC resistance on battery compartment or main Flexible Circuit board (Flexible Printed Circuit, FPC) usually, detect electric core temperature through the characteristics of NTC resistance Negative temperature coefficient, but electric core generates heat and has inhomogeneous characteristics among the actual conditions for the temperature detection regionalization that utilizes NTC resistance to go on, the problem that can not detect partial regional temperature variation exists.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a battery excess temperature protection device and electronic equipment to solve the regional inaccurate problem of testing result that leads to of electric core temperature detection.
In a first aspect, an embodiment of the present invention provides a battery over-temperature protection device, including:
the battery comprises a battery cell, a first conducting layer, a second conducting layer, a power management module and a temperature detection module;
the first conducting layer and the second conducting layer are respectively arranged on a first outer surface and a second outer surface of the battery cell, and the first outer surface and the second outer surface are distributed in an opposite manner;
the first conducting layer is provided with a first electric connection end and a second electric connection end, the first electric connection end is electrically connected with the power management module, and the second electric connection end is electrically connected with the first end of the temperature detection module; the second conducting layer is provided with a third electric connection end and a fourth electric connection end, the third electric connection end is electrically connected with the power management module, and the fourth electric connection end is electrically connected with the second end of the temperature detection module;
wherein the first resistance value of the first conductive layer and the second resistance value of the second conductive layer are inversely proportional to the cell temperature of the battery cell.
In a second aspect, the embodiment of the present invention further provides an electronic device, including the battery over-temperature protection device.
Thus, according to the above technical scheme of the present invention, the first conductive layer and the second conductive layer are respectively laid on the two surfaces of the electric core which generate heat seriously, the electric core generates heat to cause the deformation of the first conductive layer or the second conductive layer, and further cause the change of the first resistance value of the first conductive layer or the second resistance value of the second conductive layer, the temperature detection module monitors the overall temperatures of the two surfaces of the electric core simultaneously according to the change of the first resistance value or the second resistance value, thereby avoiding the problem of inaccurate detection result caused by the regionalization of the electric core temperature detection, and ensuring the safety of the electric core under the heavy current charging process and the heavy load use scene; and by utilizing the characteristic of quick heat dissipation of the metal material, favorable conditions are created for quick heat dissipation of the battery cell.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of a battery overheat protection device according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating the deformation of the conductive layer according to the embodiment of the present invention;
fig. 3 is a schematic diagram of an equivalent circuit of the over-temperature battery protection device according to an embodiment of the present invention;
fig. 4 is a schematic view showing a working flow of the over-temperature battery protection device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a charging circuit of an electronic device according to an embodiment of the present invention.
Description of reference numerals:
1. electric core, 2, power management module, 3, temperature detection module, 11, first electric connection end, 12, second electric connection end, 13, third electric connection end, 14, fourth electric connection end.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a battery over-temperature protection device, including: the battery comprises a battery core 1, a first conducting layer, a second conducting layer, a power management module 2 and a temperature detection module 3;
the first conductive layer and the second conductive layer are respectively arranged on a first outer surface and a second outer surface of the battery cell 1, and the first outer surface and the second outer surface are distributed in an opposite manner;
the first conducting layer is provided with a first electric connecting end 11 and a second electric connecting end 12, the first electric connecting end 11 is electrically connected with the power management module 2, and the second electric connecting end 12 is electrically connected with the first end of the temperature detection module 3; the second conductive layer is provided with a third electric connection end 13 and a fourth electric connection end 14, the third electric connection end 13 is electrically connected with the power management module 2, and the fourth electric connection end 14 is electrically connected with the second end of the temperature detection module 3;
wherein the first resistance value of the first conductive layer and the second resistance value of the second conductive layer are inversely proportional to the cell temperature of the battery cell 1.
In this embodiment, the first conductive layer and the second conductive layer are respectively laid on two opposite outer surface surfaces of the battery cell 1, for example, the upper surface and the lower surface of the battery cell 1. The first conducting layer and the second conducting layer can be metal films, the metal films can be selected according to the temperature protection threshold of the battery core 1, different metal films can be flexibly selected according to different temperature protection thresholds, and reliability is guaranteed. And by utilizing the characteristic of quick heat dissipation of the metal material, favorable conditions are created for the quick heat dissipation of the battery cell 1.
The specific laying positions of the first conducting layer and the second conducting layer on the battery cell 1 are set according to the heating distribution characteristics of the battery cell 1, so that the highest temperature of the whole battery cell can be measured, and early warning is timely carried out. The second electric connection end 12 of the first conductive layer is connected with the first end of the temperature detection module 3; the fourth electrical connection end 14 of the second conductive layer is connected with the second end of the temperature detection module 3. The first conducting layer and the second conducting layer are deformed after being overheated, so that the resistance value of the first conducting layer and the resistance value of the second conducting layer are changed, and the voltage value of the first conducting layer and the voltage value of the second conducting layer are changed.
The first resistance value of the first conductive layer is inversely proportional to the cell temperature of the battery cell 1, and the second resistance value of the second conductive layer is inversely proportional to the cell temperature of the battery cell 1, that is, the higher the cell temperature is, the lower the first resistance value and the second resistance value are. Whether the battery core is over-temperature or not can be determined according to the change of the first resistance value and the change of the second resistance value, so that early warning can be timely achieved.
The power management module 1 is respectively electrically connected with the first conducting layer and the second conducting layer, outputs fixed voltage to the first conducting layer and the second conducting layer, and can be flexibly selected according to requirements.
Optionally, based on the heat generation characteristic of electric core 1, its point that generates heat often distributes near the utmost point ear of electric core 1, and the side is difficult for generating heat, promptly electric core 1 generate heat mainly concentrate on two surfaces from top to bottom, consequently, first conducting layer with the second conducting layer preferably set up in electric core 1's upper and lower surface, the temperature of the upper and lower face of detectable whole electric core 1, as long as electric core 1 has the temperature of any place to exceed and set for the threshold value and can report to the police. In addition, the temperature of all contact surfaces on two surfaces of the battery cell can be detected in real time in a large-current and large-load use scene, and the problem of inaccurate detection result caused by battery cell temperature detection regionalization is avoided.
The embodiment of the utility model provides a, lay first conducting layer and second conducting layer respectively on two surfaces that the electricity core generates heat seriously, the electricity core generates heat and leads to first conducting layer or second conducting layer take place deformation, and then lead to the first resistance value of first conducting layer or the second resistance value of second conducting layer to change, and the temperature detection module is according to the change of first resistance value or second resistance value, monitors the bulk temperature of two faces of electricity core simultaneously, has avoided the regional inaccurate problem of testing result that leads to of electricity core temperature detection, has guaranteed the electric core security under heavy current charging process and heavy load use scene; and by utilizing the characteristic of quick heat dissipation of the metal material, favorable conditions are created for quick heat dissipation of the battery cell.
Optionally, the battery over-temperature protection device further includes: a third resistor R3, a first end of the third resistor R3 is respectively connected with the second electrical connection end 12 and the temperature detection module 3, and a second end of the third resistor R3 is grounded;
a fourth resistor R4, a first end of the fourth resistor R4 is connected to the fourth electrical connection terminal 14 and the temperature detection module 3, respectively, and a second end of the fourth resistor R4 is grounded. In this embodiment, the third resistor R3 and the fourth resistor R4 are voltage dividing resistors, and when the first resistance value and/or the second resistance value change due to thermal deformation of the first conductive layer and/or the second conductive layer, a voltage value of the voltage dividing resistors changes. Since the third resistor R3 is connected to the first conductive layer and the fourth resistor R4 is connected to the second conductive layer, when the temperature detection module 3 detects that the voltage change of the third resistor R3 exceeds a preset value, it is determined that the first resistance value of the first conductive layer is reduced, and then the first conductive layer is deformed by heating, and the first outer surface of the battery cell 1 where the first conductive layer is located is overheated; when the temperature detection module 3 detects that the voltage change of the fourth resistor R4 exceeds a preset value, it is determined that the second resistance value of the second conductive layer is reduced, and then the second conductive layer is heated to deform, and the second outer surface of the battery cell 1 where the second conductive layer is located is overheated. The temperature detection module 3 can determine the conductive layer which deforms according to the voltage value change of the divider resistor, so that the overheating of the surface of the battery cell is determined, the early warning is timely achieved, and the pertinence is achieved.
Optionally, the first and second conductive layers are comprised of a shape memory alloy. Alternatively, the first and second conductive layers are composed of a thermistor material. The materials of the first conducting layer and the second conducting layer can be set according to requirements and have the characteristic of deformation when heated. Specifically, a schematic diagram of the deformation of the first conductive layer or the second conductive layer due to heating is shown in fig. 2, and the resistance of the first conductive layer or the second conductive layer after deformation due to heating decreases correspondingly, which causes the voltage values of the voltage dividing resistors R3 and R4 connected in parallel to the first conductive layer or the second conductive layer to change respectively.
Detect simultaneously two of electricity core 1 generate heat the temperature on surface, as long as the temperature that electricity core has any place surpasss to predetermine the threshold value and can produce the prompt message, avoided because the local temperature of detecting electricity core causes the testing result inaccurate, and then leads to the problem of potential safety hazard.
Optionally, a temperature control protection switch is arranged between the battery cell 1 and the charger; and the control end of the temperature control protection switch is electrically connected with the output end of the temperature detection module 3. Because the first end of the temperature detection module 3 is connected with the second electric connection end 12 of the first conducting layer, and the second end of the temperature detection module 3 is connected with the fourth electric connection end 14 of the second conducting layer, the first end of the temperature detection module 3 receives an electric signal related to the first conducting layer, the second end of the temperature detection module 3 receives an electric signal related to the second conducting layer, and the temperature detection module 3 judges which side of the battery cell 1 has too high temperature according to different electric signals, so that the battery cell can be controlled by the temperature control protection switch to stop charging, and meanwhile, the temperature of the battery cell can be collected to obtain big data, so that the subsequent design is more targeted.
Optionally, the battery over-temperature protection device further includes: a heat conductive member; the first conductive layer and the second conductive layer are respectively connected with the heat-conducting member. The heat conducting piece is used for heat transmission, and can radiate heat generated by the battery cell 1 to the surrounding environment to realize heat radiation.
Optionally, the battery over-temperature protection device further includes: a heat sink; the heat dissipation device is electrically connected with the output end of the temperature detection module 3. The heat dissipation device may be a fan and is disposed at a position close to the battery cell 1. When detecting that the electric core 1 is over-temperature, the temperature detection module 3 can control the heat dissipation device to work, so that the heat dissipation of the electric core 1 is realized.
Optionally, the temperature detection module 3 includes a storage module, and a corresponding relationship between the voltage change value of the third resistor R3 and the temperature of the first outer surface of the battery cell 1 is stored in the storage module; and the storage module stores the corresponding relation between the voltage change value of the fourth resistor R4 and the temperature of the second outer surface of the battery cell 1. And the temperature detection module 3 judges whether the battery cell 1 is over-temperature or not and judges which side of the battery cell 1 is over-temperature according to the corresponding relation and the detected voltage change value of the third resistor R3 and/or the fourth resistor R4. For example: because the third resistor R3 is connected to the first conductive layer, when the temperature detection module 3 detects that the voltage change of the third resistor R3 exceeds a preset value, it indicates that the first conductive layer is deformed by heating, and then the first outer surface of the battery cell 1 is overheated; when the temperature detection module 3 detects that the voltage change of the fourth resistor R4 exceeds a preset value, it indicates that the second conductive layer is deformed by heating, and then the second outer surface of the battery cell 1 is overheated.
As shown in fig. 3, assuming that the first outer surface of the battery cell 1 is an upper surface of the battery cell, R1 is an equivalent resistance of the first conductive layer on the upper surface of the battery cell, R3 is a fixed voltage-dividing resistor, the power management module 2 outputs a fixed output voltage Vout, and Vin1 is a divided voltage on R3, then: Vin-Vout R2/R2+ R1; the resistance of R3 is not changed, and R1 is changed according to the temperature change. The operation Unit of the battery over-temperature protection device may be the temperature detection module, or may be a micro control Unit ((MCU Unit, MCU).) through the operation of the ADC1, a small voltage value change of the R3 may be detected, that is, the temperature of the upper surface of the electrical core 1 changes, and when the voltage value exceeds a certain threshold, it is determined that the temperature of the upper surface of the electrical core 1 exceeds the set threshold.
This embodiment utilizes two way detection circuitry to detect the temperature of two surfaces of electric core simultaneously, can learn the condition of being heated of electric core the very first time when the temperature surpasss the threshold value to make the early warning suggestion or take certain measure to guarantee electronic equipment's security.
Optionally, the temperature detection module 3 includes: a first General purpose input/Output port (GPIO) and a second GPIO 2;
the third resistor R3 is connected with the temperature detection module 3 through the first general purpose input/output port GPIO 1; the fourth resistor R4 is connected to the temperature detecting module 3 through the second general purpose input/output port GPIO 2.
Optionally, the temperature detection module 3 further includes: a first Analog-to-digital converter (ADC 1) and a second Analog-to-digital converter ADC 2; the first analog-to-digital converter ADC1 is connected with the first general purpose input/output port GPIO 1; the second analog-to-digital converter ADC2 is connected with the second general input/output port GPIO 2.
In this embodiment, the third resistor R3 is connected to the ADC1 through the GPIO1, the fourth resistor R4 is connected to the ADC2 through the GPIO2, the ADC1 and the ADC2 may be 12-bit high-precision ADC modules, the ADC1 may accurately detect a voltage value change of the first resistor R1, the ADC2 may accurately detect a voltage value change of the second resistor R2, and the temperature detection module 3 may distinguish, according to a detection result of the ADC1 and a detection result of the ADC2, which surface of the battery cell 1 has an excessively high temperature while ensuring detection independence.
The first conducting layer is equivalent to a first resistor R1, the second conducting layer is equivalent to a second resistor R2, an equivalent circuit of the battery over-temperature protection device is as shown in fig. 3, and the power management module 2, the first resistor R1, the third resistor R3 and the ADC1 are first detection circuits, corresponding to the first conducting layer, and configured to detect whether a first outer surface of the electrical core 1 where the first conducting layer is located is over-temperature; the power management module 2, the second resistor R2, the fourth resistor R4, and the ADC2 are second detection circuits, and are configured to detect whether the second outer surface of the battery cell 1 where the second conductive layer is located is over-temperature.
Optionally, the temperature detection module 3 further includes: a control module connected to the first analog-to-digital converter ADC1 and the second analog-to-digital converter ADC2, respectively. When the voltage variation value of the R3 and/or R4 exceeds a preset threshold value, the control module considers that the battery cell 1 is over-temperature, and then the control module may send an early warning to a user through prompt information, for example: since R3 is connected to the first conductive layer, when detecting that the voltage change of R3 exceeds a preset value, the control module indicates that the first resistance value of the first conductive layer changes, and the first outer surface of the battery cell 1 is over-temperature, and the control module may send a first prompt message through a user interface of an electronic device to prompt that the first outer surface of the battery cell of a user is over-temperature; since R4 is connected to the second conductive layer, when detecting that the voltage change of R4 exceeds the preset value, the control module indicates that the second resistance value of the second conductive layer changes, and the second outer surface of the battery cell 1 is over-temperature, and the control module may send a second prompt message through a user interface of the electronic device to prompt the user that the second outer surface of the battery cell is over-temperature.
Specifically, after the control module sends out the prompt message for a preset time, if the user still does not take effective measures, the control module may send out a related instruction to ensure the safety of the whole battery cell, specifically, if the electronic device is in a charging state, the digital processor or the MCU may send out an instruction to reduce the charging current or even disconnect the charging, and if the electronic device is in a high energy consumption scene (such as playing games, watching high definition movies, etc.), the user interface prompts the user to pay attention to or shut down the electronic device until the battery cell temperature of the electronic device falls within a normal range, thereby greatly improving the safety of the electronic device.
Optionally, the battery over-temperature protection device further includes: a charging chip; the charging chip is electrically connected with the power management module 2. The charging chip IC is used for adjusting the stability of the current and the voltage output by the charger and ensuring that the charger charges the battery cell in the optimal state.
Optionally, the battery over-temperature protection device further includes: an Overvoltage protection (OVP) circuit and an anti-reverse circuit; one end of the overvoltage protection circuit is electrically connected with the charging chip, and the other end of the overvoltage protection circuit is electrically connected with the reverse plugging prevention circuit; the reverse-plugging prevention circuit is connected with the charger and can avoid damage to components. The overvoltage protection circuit has the following functions: the voltage output by the charger is limited within the range of the safety value, and the damage of the battery core and other components caused by the overlarge voltage is prevented. The working flow of the battery over-temperature protection device is described by the following specific embodiment. Taking the power management module 2, the first conductive layer, the third resistor R3 and the ADC1 as a first detection circuit, and the power management module 3, the second conductive layer, the fourth resistor R4 and the ADC2 as a second detection circuit as an example, as shown in fig. 4, the battery over-temperature protection device initializes the first detection circuit and/or the second detection circuit; starting detection and judging whether abnormality exists; if the first detection circuit is abnormal, triggering a first interruption module, wherein the first interruption module corresponds to the first external surface temperature abnormality of the battery core; if the second detection circuit is abnormal, a second interruption module is triggered, wherein the second interruption module corresponds to the second external surface temperature abnormality of the battery core; sending prompt information to remind a user through a user interface; and judging whether the user is processed or not, if not, automatically shutting down or stopping charging, and if so, finishing detection.
In the embodiment of the utility model, lay first conducting layer and second conducting layer respectively on two surfaces that the electricity core generates heat seriously, the electricity core generates heat and leads to first conducting layer or second conducting layer takes place to deform, and then leads to the first resistance value of first conducting layer or the second resistance value of second conducting layer to change, and the temperature detection module is according to the voltage value of first resistance value or second resistance value changes, monitors the bulk temperature of two faces of electricity core simultaneously, has avoided the regional problem that leads to the inaccurate testing result of electric core temperature detection, has guaranteed the electric core security under heavy current charging process and heavy load use scene; and by utilizing the characteristic of quick heat dissipation of the metal material, favorable conditions are created for quick heat dissipation of the battery cell.
The embodiment of the utility model provides a still provide an electronic equipment, including foretell battery excess temperature protection device. The present invention provides an electronic device, which is described in detail below with reference to specific embodiments. For convenience of illustration, a mobile phone is used as a specific example of the electronic device of the present invention for illustration, and it can be understood by those skilled in the art that, besides the mobile phone is used as the electronic device, the present invention can also be applied to other electronic devices with a display screen, such as a tablet computer, an electronic book reader, an MP3 (Moving Picture Experts Group Audio Layer III) player, an MP4 (Moving Picture Experts Group Audio Layer IV) player, a laptop portable computer, a car computer, a desktop computer, a set-top box, an intelligent television, a wearable device, etc., all fall within the scope of the present invention.
Alternatively, as shown in fig. 5, a schematic diagram of a charging circuit of an electronic device is shown. The electronic equipment further comprises an MCU, one end of the MCU is connected with the temperature detection module 3, the other end of the MCU is connected with a USB (Universal Serial Bus) switch, and the USB switch is connected with a charger. The charger supplies power to an anti-reverse-insertion circuit, the anti-reverse-insertion circuit is connected with an OVP (Over Voltage Protection) circuit, the OVP circuit is connected with a charging IC (integrated circuit), and the charging IC is connected with the power management module 2 and the battery cell 1 and supplies power supply Voltage to the battery cell 1; the charging IC is also connected with the USB switch. The charger is also connected with a discrete transistor MOSFET1, a discrete MOSFET1 is connected with a discrete MOSFET2, the discrete MOSFET2 is connected with the battery cell 1, and the charger supplies power to the MOSFET1 and the MOSFET 2. The MCU is connected to the discrete MOSFET1 and the discrete MOSFET2, respectively, for controlling the discrete MOSFET1 and the discrete MOSFET2 by control signals.
In this embodiment, when the temperature detection module 3 detects that the first outer surface and/or the second outer surface of the battery cell 1 are/is over-temperature, the MCU can control the generation of the prompt message, or stop charging or even shut down, so as to ensure the safety of the battery cell.
It should be noted that, this utility model provides a battery excess temperature protection device can also be applied to other electronic equipment that adopt lithium ion battery, or the full range temperature detection of wireless charging coil transmitting terminal, receiving terminal, improves the security of charging.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or electronic device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or electronic device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or electronic device that comprises the element.
The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Claims (10)
1. A battery over-temperature protection device is applied to electronic equipment and is characterized by comprising an electric core (1), a first conducting layer, a second conducting layer, a power management module (2) and a temperature detection module (3);
the first conducting layer and the second conducting layer are respectively arranged on a first outer surface and a second outer surface of the battery cell (1), and the first outer surface and the second outer surface are distributed in an opposite way;
the first conducting layer is provided with a first electric connecting end (11) and a second electric connecting end (12), the first electric connecting end (11) is electrically connected with the power management module (2), and the second electric connecting end (12) is electrically connected with the first end of the temperature detection module (3); the second conducting layer is provided with a third electric connection end (13) and a fourth electric connection end (14), the third electric connection end (13) is electrically connected with the power management module (2), and the fourth electric connection end (14) is electrically connected with the second end of the temperature detection module (3);
wherein the first resistance value of the first conductive layer and the second resistance value of the second conductive layer are inversely proportional to the cell temperature of the battery cell (1).
2. The battery over-temperature protection device according to claim 1, further comprising:
a third resistor (R3), wherein a first end of the third resistor (R3) is respectively connected with the second electric connection end (12) and the temperature detection module (3), and a second end of the third resistor (R3) is grounded;
a fourth resistor (R4), wherein a first end of the fourth resistor (R4) is respectively connected with the fourth electric connection end (14) and the temperature detection module (3), and a second end of the fourth resistor (R4) is grounded.
3. The battery over-temperature protection device of claim 1, wherein the first and second conductive layers are comprised of a shape memory alloy.
4. The battery over-temperature protection device of claim 1, wherein the first and second conductive layers are comprised of a thermistor material.
5. The battery over-temperature protection device according to claim 1, wherein a temperature control protection switch is arranged between the battery cell (1) and a charger;
and the control end of the temperature control protection switch is electrically connected with the output end of the temperature detection module (3).
6. The battery over-temperature protection device according to claim 1, further comprising: a heat conductive member;
the first conductive layer and the second conductive layer are respectively connected with the heat-conducting member.
7. The battery over-temperature protection device according to claim 1, further comprising: a heat sink;
the heat dissipation device is electrically connected with the output end of the temperature detection module (3).
8. The battery over-temperature protection device according to claim 2, wherein the temperature detection module (3) comprises a storage module;
the storage module stores a corresponding relation between a voltage change value of the third resistor (R3) and the temperature of the first outer surface of the battery cell (1); and the number of the first and second groups,
the storage module stores a corresponding relation between a voltage change value of the fourth resistor (R4) and the temperature of the second outer surface of the battery cell (1).
9. The battery over-temperature protection device according to claim 1, further comprising: a charging chip;
the charging chip is electrically connected with the power management module (2);
the battery over-temperature protection device further comprises: an overvoltage protection circuit and an anti-reverse-plugging circuit;
one end of the overvoltage protection circuit is electrically connected with the charging chip, and the other end of the overvoltage protection circuit is electrically connected with the reverse plugging prevention circuit;
the anti-reverse-plugging circuit is connected with a charger.
10. An electronic device characterized by comprising the battery overheat protection apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922480791.3U CN210957883U (en) | 2019-12-31 | 2019-12-31 | Battery over-temperature protection device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922480791.3U CN210957883U (en) | 2019-12-31 | 2019-12-31 | Battery over-temperature protection device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210957883U true CN210957883U (en) | 2020-07-07 |
Family
ID=71377256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922480791.3U Active CN210957883U (en) | 2019-12-31 | 2019-12-31 | Battery over-temperature protection device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210957883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099612A (en) * | 2020-09-18 | 2020-12-18 | 联想(北京)有限公司 | Server mainboard, server and power supply control method |
-
2019
- 2019-12-31 CN CN201922480791.3U patent/CN210957883U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099612A (en) * | 2020-09-18 | 2020-12-18 | 联想(北京)有限公司 | Server mainboard, server and power supply control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10541542B2 (en) | System and method for charging a battery pack | |
| US10574004B2 (en) | Cable and power supply device | |
| CN108054795B (en) | Terminal and charging method | |
| US20190391628A1 (en) | Method for selecting a supply source power | |
| US20180358821A1 (en) | Hub | |
| CN109245244A (en) | Charging circuit, charging method, electronic equipment and storage medium | |
| CN103855772A (en) | Mobile terminal and charging control method of mobile terminal | |
| CN109728631B (en) | Charging circuit and electronic equipment | |
| JP2009106010A (en) | Power supply system | |
| CN109412234A (en) | Charging circuit, charging method, electronic equipment and storage medium | |
| CN210957883U (en) | Battery over-temperature protection device and electronic equipment | |
| EP2624401B1 (en) | Electronic apparatus and driving control method thereof | |
| CN106471700B (en) | Battery protection plate, battery and mobile terminal | |
| EP3057194B1 (en) | Charge control circuit, charge control method and associated power management integrated circuit | |
| CN106663958B (en) | Battery protection plate, battery and mobile terminal | |
| WO2017201735A1 (en) | Battery protecting board, battery, and mobile terminal | |
| CN110571758A (en) | USB interface protection circuit, method, adapter and electronic equipment | |
| CN209515943U (en) | A kind of mobile terminal | |
| CN104597937A (en) | Electronic equipment with intelligent temperature regulation function | |
| CN210273552U (en) | USB double-port charger with interlocking control | |
| CN114977346A (en) | Charging system and device | |
| CN218678426U (en) | Data line control by temperature change detects protection circuit | |
| US20230120942A1 (en) | Smart battery device and fast charging method thereof | |
| US11961976B2 (en) | Multiple battery cell architecture for outdoor mounted computing devices | |
| CN219086075U (en) | Self-heating control system and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |