WO2017201921A1

WO2017201921A1 - Device and method for detecting battery abnormality

Info

Publication number: WO2017201921A1
Application number: PCT/CN2016/098868
Authority: WO
Inventors: 姜娟
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-05-24
Filing date: 2016-09-13
Publication date: 2017-11-30
Also published as: CN107422264A

Abstract

A device and method for detecting a battery abnormality. A signal collector (12) is electrically connected to a battery and is configured to collect an electric signal generated due to a battery state change of the battery; and a signal processor (14) is electrically connected to the signal collector (12) and is configured to determine whether the electric signal is greater than a pre-set threshold value. Where the electric signal is greater than the pre-set threshold value, it is determined that the battery is abnormal. The problem in the relevant art of detecting a battery state being inefficient, caused by the fact that only a battery fault can be monitored but a battery state cannot be effectively detected in time, is solved, and the effect of improving the efficiency of detecting a battery state is achieved.

Description

Battery abnormality detecting device and method

Technical field

The present application relates to, but is not limited to, the field of electronic technology applications, and in particular, to a battery abnormality detecting apparatus and method.

Background technique

With the widespread use of smart terminals and the technological innovations associated with smart terminals (eg, energy sources for smart terminals - batteries), how to effectively ensure the stable operation of batteries in smart terminals has become an urgent problem in the field. .

In the field of smart terminal products, batteries have played a decisive role, but the battery will be abnormal during long-term use, such as battery deformation, battery drum kits, and even accidents such as bursting and burning, if timely/real-time detection/ By monitoring the above anomalies, it is possible to effectively avoid accidents and ensure the normal use of smart terminal products. In the related art, since the performance of the battery is already characterized at the time of leaving the factory, the size of the battery and the performance of the battery are determined by the battery itself. Therefore, most of the current battery protection schemes adopt temperature detection protection schemes. Although this program can also protect the battery, it can not detect the bulge in real time.

In view of the above problem that the battery state is inefficient due to the fact that only the battery fault can be detected in the related art, and the battery state cannot be detected in time, an effective solution has not been proposed.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a battery abnormality detecting device and method, which can at least solve the problem that the detection battery state is inefficient due to the detection of the battery state in a timely manner because only the battery fault can be detected in the related art.

According to an embodiment of the present invention, a battery abnormality detecting apparatus is provided, comprising: a signal collector and a signal processor, wherein the signal collector is electrically connected to the battery, and is configured to collect electricity generated by a battery state change of the battery. The signal processor is electrically connected to the signal collector, and is configured to determine whether the electrical signal is greater than a preset threshold, and determine that the battery is abnormal when the electrical signal is greater than a preset threshold.

Optionally, the electrical signal includes a first electrical signal, a second electrical signal, and a third electrical signal, and the signal collector includes: a first cavity and a second cavity, wherein the first cavity is embedded in the second cavity, Wherein the first horizontal plane of the first cavity is configured with a first type of electrical component, and a center of the horizontal plane in the first cavity is disposed with a magnetic core, and the magnetic core is disposed to pass electromagnetic movement of the first cavity and the second cavity Triggering the first type of electrical component to output a first electrical signal; the inner wall of the second cavity is configured with an induction coil, the base of the second cavity is configured with a second type of electrical component, and the second type of electrical component is configured to pass through the first cavity The electromagnetic motion of the body and the second cavity triggers the second type of electrical component to output a second electrical signal; the magnetic core is interspersed with the inductive coil, the inductive coil being configured to obtain a third electrical signal by detecting the electromagnetically induced electromotive force.

Optionally, the first type of electrical component comprises: a varistor configured to output a first electrical signal by detecting a pressure generated by electromagnetic movement of the first cavity and the second cavity; and the second type of electrical component comprises: thermoelectric Occasionally, the second electrical signal is outputted by detecting the heat generated by the electromagnetic movement of the first cavity and the second cavity.

Optionally, the signal comparison module includes: a first comparator and a second comparator, wherein an input end of the first comparator is electrically connected to the first cavity, and is configured to be the first electrical The signal is compared with the first preset threshold, and the first comparison result is output to the regulator; the input end of the second comparator is electrically connected to the second cavity, and is configured to The two electrical signals are compared to the second predetermined threshold and the second comparison is output to the regulator.

Optionally, the signal comparison module includes: a first comparator and a second comparator, wherein the input end of the first comparator is electrically connected to the first cavity, and is configured to perform the first electrical signal with the first preset threshold Comparing, and outputting the first comparison result to the regulator; the input end of the second comparator is electrically connected to the second cavity, and is configured to compare the second electrical signal with the second preset threshold, and compare the second comparison result Output to the regulator.

Optionally, the battery abnormality detecting device further includes: a signal converter, a power management circuit, and an alarm The device, wherein the input end of the signal converter is electrically connected to the regulator, and the output end of the signal converter is electrically connected to the power management circuit and the alarm device, respectively, when the first electrical signal is greater than the first preset threshold, and In the case of the second electrical signal and the second predetermined threshold, the received comparison result of the regulator conversion and the third electrical signal are converted into a trigger signal, and the trigger signal is separately sent to the power management circuit and the alarm device; the power management circuit And electrically connected with the signal converter, arranged to disconnect the connection between the battery and the power supply circuit according to the trigger signal; the alarm device is electrically connected with the signal converter, and is set to send an alarm signal according to the trigger signal.

Optionally, the alarm device comprises: a triode, a resistor set and an alarm, wherein the input end of the first resistor in the resistor set is electrically connected to the signal converter, and is configured to receive a trigger signal; the output end of the first resistor and the triode The base is electrically connected; the emitter of the triode is grounded, the collector of the triode is electrically connected to one end of the alarm; the other end of the alarm is electrically connected to the second resistor in the resistor set, and the second resistor is electrically connected to the positive output of the power supply. connection.

Optionally, the alarm device comprises: a light emitting diode and/or a buzzer, wherein the cathode of the light emitting diode is electrically connected to the collector of the triode, and the anode of the light emitting diode is electrically connected to the second resistor.

According to another embodiment of the present invention, a battery abnormality detecting method is provided, which is applied to the battery abnormality detecting device, which includes: collecting an electrical signal triggered by a battery state change of the battery; determining whether the electrical signal is greater than a corresponding preset Threshold; determining that the battery is abnormal if the electrical signal is greater than a corresponding preset threshold.

Optionally, the step of collecting the battery-triggered electrical signal includes: in the case where the signal collector includes the first cavity and the second cavity, and the electrical signal includes the first electrical signal, the second electrical signal, and the third electrical signal And acquiring the first electrical cavity and the second cavity to output the first electrical signal, the second electrical signal, and the third electrical signal according to the change of the state of the battery, wherein the first electrical signal is the feedback of the varistor in the first cavity a signal; the second electrical signal is a signal fed back by the thermocouple in the second cavity; and the third electrical signal is a signal fed back by the magnetic core in the first cavity and the induction coil in the second cavity.

Optionally, the step of determining whether the electrical signal is greater than the corresponding preset threshold comprises: comparing, by the signal comparison module, the first electrical signal and the second electrical signal with the corresponding first preset threshold and the second preset threshold respectively; Determining whether the first electrical signal is greater than a first predetermined threshold and whether the second electrical signal is greater than a second predetermined threshold.

Optionally, determining that the battery is abnormal if the electrical signal is greater than a corresponding preset threshold. The step of: performing, by using the regulator, the first electrical signal, the second electrical signal, and the third electrical signal, in a case where the first electrical signal is greater than the first predetermined threshold and the second electrical signal is greater than the second predetermined threshold Converting; generating a trigger signal according to the converted first electrical signal, the second electrical signal, and the third electrical signal by the signal converter; and sending the trigger signal to the power management circuit and the alarm device, respectively.

Optionally, after the step of determining the battery abnormality in the case that the electrical signal is greater than the corresponding preset threshold, the method further includes: disconnecting the connection between the battery and the power supply circuit through the power management circuit according to the trigger signal; and passing the alarm according to the trigger signal The device sends an alarm signal.

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is configured to store program code for performing the following steps: collecting an electrical signal triggered by a battery state change of the battery; determining whether the electrical signal is greater than a corresponding preset threshold; and if the electrical signal is greater than a corresponding preset threshold , to determine the battery is abnormal.

Optionally, the storage medium is further configured to store program code for performing the following steps: the step of collecting the battery-triggered electrical signal includes: the signal collector includes a first cavity and a second cavity, and the electrical signal includes the first In the case of the electrical signal, the second electrical signal, and the third electrical signal, the first cavity and the second cavity are collected to output a first electrical signal, a second electrical signal, and a third electrical signal according to a change in the state of the battery, wherein The first electrical signal is a signal fed back by the varistor in the first cavity; the second electrical signal is a signal fed back by the thermocouple in the second cavity; and the third electrical signal is a magnetic core and a second cavity in the first cavity The signal fed back by the induction coil in the body.

Optionally, the storage medium is further configured to store program code for performing the step of: determining whether the signal in the electrical signal is greater than a corresponding preset threshold comprises: respectively, the first electrical signal and the second electrical signal by the signal comparison module The signal is compared with the corresponding first preset threshold and the second preset threshold; determining whether the first electrical signal is greater than the first preset threshold, and whether the second electrical signal is greater than the second predetermined threshold.

Optionally, the storage medium is further configured to store program code for performing the following steps: in the case that the electrical signal is greater than the corresponding preset threshold, the step of determining the battery abnormality comprises: the first electrical signal is greater than the first predetermined threshold And the second electrical signal, the second electrical signal, and the third electrical signal are converted by the regulator; and the first electrical signal is converted by the signal converter according to the second electrical signal, and the first electrical signal is converted by the regulator; Second electrical signal and third electrical signal generating trigger Signal; send the trigger signal to the power management circuit and the alarm device separately.

Optionally, the storage medium is further configured to store program code for performing the following steps: after the step of determining the battery abnormality in the case that the electrical signal is greater than the corresponding preset threshold, the method further comprises: passing the power management according to the trigger signal The circuit disconnects the connection between the battery and the power supply circuit; an alarm signal is sent through the alarm device according to the trigger signal.

Through the application, the electrical signal collected by the signal processor is used to determine whether the signal in the electrical signal is greater than a corresponding preset threshold, and the battery is determined if the electrical signal is greater than a corresponding preset threshold. Abnormality, therefore, it is possible to solve the problem that the battery state is inefficient due to the detection of the battery state by detecting only the battery failure in the related art, and the effect of improving the state of the battery is improved.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

The drawings described herein are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawing:

1 is a schematic structural view of a battery abnormality detecting device according to an embodiment of the present invention;

2a is a schematic structural diagram of a battery abnormality detecting device according to an embodiment of the present invention;

2b is a schematic structural diagram of another battery abnormality detecting apparatus according to an embodiment of the present invention;

3 is a schematic view showing magnetic core placement in a first cavity in another battery abnormality detecting device according to an embodiment of the present invention;

4 is a schematic structural view of a first cavity and a second cavity in another battery abnormality detecting device according to an embodiment of the present invention;

5 is a schematic structural diagram of an alarm device in a battery abnormality detecting device according to an alternative embodiment of the present invention;

6 is a schematic structural diagram of an achievable manner of a first cavity and a second cavity in another battery abnormality detecting device according to an alternative embodiment of the present invention;

7 is a flowchart of a battery abnormality detecting method according to an embodiment of the present invention;

FIG. 8 is a flowchart of a battery abnormality detecting method according to an embodiment of the present invention; FIG.

9 is a flowchart of a process of avoiding an accident in a battery abnormality detecting method according to an embodiment of the present invention.

Preferred embodiment of the invention

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order.

Example 1

In the present embodiment, a battery abnormality detecting device is provided. FIG. 1 is a schematic structural diagram of a battery abnormality detecting device according to an embodiment of the present invention. As shown in FIG. 1, the device includes: a signal collector 12 and a signal processor 14. ,among them,

The signal collector 12 is electrically connected to the battery and configured to collect an electrical signal generated by a change in the battery state of the battery;

The signal processor 14 is electrically connected to the signal collector 12, and is configured to determine whether the electrical signal is greater than a preset threshold, and determine that the battery is abnormal if the electrical signal is greater than a preset threshold.

The battery abnormality detecting device provided by the embodiment of the present application can be applied to the detection of the battery performance in the smart terminal. The battery performance in the embodiment of the present application can be described by taking the drum as an example. The smart terminal provided in the middle can be a mobile device (battery) terminal device such as a smart phone, a tablet computer, a smart wearable device, a laptop computer or a palm business.

In the battery abnormality detecting device provided by the embodiment of the present application, the signal collector 12 collects an electrical signal generated by the battery state of the battery, wherein the electrical signal may be transmitted to the signal collector 12 through a power supply circuit connected to the battery, so that The signal collector 12 generates an electromagnetically induced electrical signal according to the signal fed back by the battery, and further passes through a signal processor electrically connected to the signal collector 12. 14. Determine whether the signal in the electrical signal is greater than a preset threshold, and output a trigger signal when determining that the signal in the electrical signal is greater than a preset threshold, wherein the trigger signal is configured to trigger power management electrically connected to the signal processor 14. The circuit and the alarm device cut off the connection between the battery and the power supply circuit through the power management circuit, and send an alarm signal through the alarm device.

In the battery abnormality detecting device provided by the embodiment of the present application, the device determines whether the electrical signal collected by the signal collector is greater than a corresponding preset threshold, and determines that the electrical signal is greater than a corresponding preset threshold. Abnormality, therefore, it is possible to solve the problem that the battery state is inefficient due to the detection of the battery state by detecting only the battery failure in the related art, and the effect of improving the state of the battery is improved.

FIG. 2 is a schematic structural diagram of a battery abnormality detecting apparatus according to an embodiment of the present invention. As shown in FIG. 2a, the battery abnormality detecting apparatus provided by the embodiment of the present application is specifically as follows:

Optionally, the electrical signal includes a first electrical signal, a second electrical signal, and a third electrical signal, and the signal collector 12 includes: a first cavity and a second cavity, wherein

The first cavity is embedded in the second cavity, wherein the first horizontal plane of the first cavity is configured with a first type of electrical component, and the center of the horizontal plane in the first cavity is disposed with a magnetic core disposed through the first cavity The electromagnetic motion of the second cavity triggers the first type of electrical component to output a first electrical signal;

The inner wall of the second cavity is provided with an induction coil, and the base of the second cavity is provided with a second type of electrical component, which is arranged to trigger the second type of electrical component through the electromagnetic movement of the first cavity and the second cavity, and output the second electrical component a signal; a magnetic core interposed in the induction coil, configured to obtain a third electrical signal by detecting an electromagnetic induction electromotive force.

Optionally, the first type of electrical component includes: a varistor configured to output a first electrical signal by detecting a pressure generated by electromagnetic movement of the first cavity and the second cavity;

The second type of electrical component includes a thermocouple configured to output a second electrical signal by detecting heat generated by electromagnetic movement of the first cavity and the second cavity.

As shown in FIG. 2a, a varistor is disposed on the top of the first cavity, a magnetic core is disposed inside the first cavity (ie, at a center position of the top of the first cavity); and a thermocouple is disposed at the bottom of the second cavity. A closed induction coil is surrounded by the inner cavity of the second cavity.

As shown in Fig. 2a, the total resistance of the coil on the second cavity is r, and the area of the coil closed per turn is S, the line The magnetic induction intensity at the position of the circle is B. When the battery is heated, there is an indication of the bulge, the cavity begins to move, and the average angular velocity of the coil is ω. At this time, the induced electromotive force is generated due to the change of the magnetic flux, and the corresponding induced current value I is calculated (ie, in the embodiment of the present application) The third electrical signal), at this time, the varistor of the top surface of the first cavity simultaneously changes to generate a current value Ia (ie, the first electrical signal in the embodiment of the present application), and the thermoelectricity of the bottom surface of the second cavity There will also be corresponding changes to produce a current value Ib (i.e., the second electrical signal in the embodiment of the present application).

Here, the magnetic core placement manner in the first cavity is shown in FIG. 3. FIG. 3 is a schematic view showing the magnetic core placement in the first cavity in another battery abnormality detecting device according to an embodiment of the present invention, as shown in FIG. The N pole is up and the S pole is down.

In addition, FIG. 4 is a schematic structural diagram of a first cavity and a second cavity in another battery abnormality detecting device according to an embodiment of the present invention, as shown in FIG. 4, a first electrical signal, a second electrical signal, and a third The electrical signal is generated by a relative motion between the first cavity and the second cavity due to electromagnetic induction.

Optionally, the signal processor 14 includes: a signal comparison module, a signal amplifying circuit, and a regulator, wherein the input ends of the signal comparison module are electrically connected to the first cavity and the second cavity, respectively, and configured to receive the first electrical signal And the second electrical signal, the output of the signal comparison module is electrically connected to the input end of the regulator, and is configured to compare the first electrical signal with a corresponding first preset threshold, and the second electrical signal and the corresponding second The preset threshold is compared to output a comparison result; the input end of the signal amplifying circuit is electrically connected to the first cavity, and is configured to receive the third electrical signal; the output end of the signal amplifying circuit is electrically connected to the regulator, and is set to be output amplified a third electrical signal; the input end of the regulator is electrically connected to the signal comparison module and the signal amplifying circuit, respectively, configured to receive the comparison result and the amplified third electrical signal, and convert the comparison result and the amplified third electrical signal .

As shown in FIG. 2a, the comparator in FIG. 2a, that is, the signal comparison module in the embodiment of the present application, is configured to correspond to the first electrical signal and the second electrical signal fed back to the first cavity and the second cavity. Comparing the first preset threshold with the second preset threshold; wherein the third electrical signal input signal amplifying circuit (ie, the preamplifying circuit in FIG. 2a) performs amplification, and finally, the compared first electrical signal And converting the second electrical signal and the amplified third electrical signal input regulator, wherein the compared first electrical signal and second electrical signal, and the amplified third electrical signal belong to an analog signal, through the regulator The conversion converts the analog signal to a digital signal.

Different from FIG. 2a, the embodiment of the present application further provides a scheme of a comparator. FIG. 2b is a schematic structural diagram of another battery abnormality detecting apparatus according to an embodiment of the present invention. As shown in FIG. 2b, two sets are respectively provided. a comparator that receives the first electrical signal and the second electrical signal from the first cavity and the second cavity, respectively, ie, Ia of the varistor feedback in FIG. 2a and FIG. 2b and Ib of the thermocouple feedback, Ia and The first preset threshold IA corresponding to Ia is compared by the first comparator, and Ib is compared with the second preset threshold IB of the corresponding Ib by the second comparator, and then the first preset threshold of Ia and the corresponding Ia is further The comparison result of IA, and the comparison result of Ib with the second preset threshold IB of the corresponding Ib are input to the regulator.

Optionally, the battery abnormality detecting apparatus provided by the embodiment of the present application further includes: a signal converter 16, a power management circuit 17, and an alarm device 18, wherein

The input end of the signal converter 16 is electrically connected to the regulator, and the output end of the signal converter 16 is electrically connected to the power management circuit 17 and the alarm device 18, respectively, when the first electrical signal is greater than the first preset threshold, and The second electrical signal is greater than the second predetermined threshold, the received comparator conversion comparison result and the third electrical signal are converted into a trigger signal, and the trigger signal is sent to the power management circuit 17 and the alarm device 18;

The power management circuit 17 is electrically connected to the signal converter 16 and configured to disconnect the connection between the battery and the power supply circuit according to the trigger signal;

The alarm device 18 is electrically connected to the signal converter 16 and is configured to issue an alarm signal according to the trigger signal, wherein the alarm signal comprises: an acoustic signal and/or an optical signal.

2a and 2b, as shown in Figures 2a and 2b, the signal converter 16 is electrically connected to the regulator, by receiving the first electrical signal, the second electrical signal and the third electrical signal converted by the regulator, The signal is converted into a trigger signal, and the power management circuit 17 and the alarm device 18 electrically connected to the signal converter 16 are triggered. When the power management circuit 17 receives the trigger signal, the connection between the battery and the power supply circuit is disconnected to avoid The danger of explosion of the current power supply circuit due to the bulge of the battery; It should be noted that the power supply circuit may be a charging circuit except the power supply circuit on the terminal device where the battery is located, that is, the circuit to which the battery belongs during the charging process of the battery.

While the power management circuit 17 receives the trigger signal, the alarm device 18 generates an acoustic signal and/or an optical signal to generate an alarm according to the trigger signal.

Optionally, the alarm device 18 includes: a triode, a resistor set, and an alarm, wherein

An input end of the first resistor in the resistor set is electrically connected to the signal converter, and is configured to receive a trigger signal; an output end of the first resistor is electrically connected to a base of the triode;

The emitter of the triode is grounded, and the collector of the triode is electrically connected to one end of the alarm;

The other end of the alarm is electrically coupled to a second resistor in the set of resistors, and the second resistor is electrically coupled to the positive output of the power supply.

FIG. 5 is a schematic structural diagram of an alarm device in a battery abnormality detecting device according to an alternative embodiment of the present invention. As shown in FIG. 5, the alarm device 18 is exemplified by an optical signal alarm, where the light signal is generated as an LED. D, wherein the first resistor in the resistor set (ie, the resistor R1 in FIG. 5) is connected to the drum package signal output end, the other end of the resistor R1 is electrically connected to the base of the transistor T, and the emitter of the transistor T is grounded, the triode The collector of T is connected to the cathode of the light-emitting diode D, the anode of the light-emitting diode D is electrically connected to one end of the resistor R2, and the other end of the resistor R2 is electrically connected to the positive output terminal of the power supply. Similarly, when the alarm device 18 is an acoustic signal alarm, the LED D is replaced with a buzzer, or at the same time, the buzzer and the LED D are connected to the circuit.

As shown in Figure 5, when there is battery drum package information, the information is input to the R1 end; when there is battery drum package information, there is a voltage drop between the base and the emitter of the triode T at this time; on the resistor R2 and the light-emitting diode A current is passed; at this time, the LED is illuminated, and the alarm indicates that the battery has a bulging phenomenon.

In addition, FIG. 6 is a schematic structural view of an achievable manner of a first cavity and a second cavity in another battery abnormality detecting device according to an alternative embodiment of the present invention.

In summary, the battery abnormality detecting device provided by the embodiment of the present application can more accurately apply the cavity structure by using the principle of electromagnetic induction, and simultaneously set multiple parameters on the cavity to accurately detect in real time. Battery drum kits are more reliable, more timely and more accurate than previous sensors. The battery abnormality detecting device provided by the embodiment of the present application includes two cylindrical cavities, and the two cylindrical cavities intersect to form a cavity, and FIG. 6 is a cross-sectional effect diagram of the two cylinders. The top surface area of the first cavity is large, and the back surface of the terminal battery is designed to be close to the charging electrode, and is pressed to a soft place and can be completely covered. The magnetic core disposed in the first cavity is as shown in FIG. 3, and four varistors are arranged on the top surface of the first cavity. The second cavity can be designed according to the actual size, the second cavity has a closed N匝 coil, and the magnetic induction line generated by the core of the first cavity is not parallel, and the thermocouple is arranged on the bottom surface of the second cavity. The entire cavity is designed under the PCB in the battery according to the principle of buried capacitance. When the battery starts to show signs of bulging, the cavity begins to move. At this time, the average angular velocity of the coil on the cylinder is ω. At this time, the induced current value I can be calculated. At this time, the varistor of the A surface changes at the same time to generate a current. The value Ia, the bottom thermocouple will also have a corresponding change, resulting in a current value Ib. These three currents I, Ia, Ib are generated by the movement of the cavity due to the signs of the battery bulge. I is sent to the preamplifier circuit, and Ia and Ib are respectively compared with the range thresholds IA and IB of the respective batteries for normal operation. If Ia and Ib are both greater than the threshold, it is determined that the battery is bulged, and then three currents are used. The battery drum kit information obtained by I, Ia, Ib is output to the regulator, and the electrical signal is output through the signal converter and sent to the alarm device. Alarm device alarm. At the same time, the drum kit information is sent to the power management circuit for protection to avoid accidents.

The battery abnormality detecting device provided by the embodiment of the present application is simple, the detection is sensitive and comprehensive, and the risk information of the battery drum package is safely prevented to avoid accidents.

With reference to FIG. 5, in order to facilitate the user to intuitively obtain the battery drum package information, the battery abnormality detecting device provided by the embodiment of the present application is added to the alarm device. The alarm device is exemplified by including one light-emitting diode D, two resistors, and one transistor T. As shown in Figure 5, when there is battery drum package information, the information is input. At this time, there is a voltage drop between the base and the emitter of the triode, and a current flows through the LED. At this time, the LED is illuminated and the alarm is displayed. The battery has a bulging phenomenon. The user can get the battery drum package information in the first time.

Example 2

In this embodiment, a battery abnormality detecting method is provided, which is applied to the battery abnormality detecting device shown in FIG. 1 to FIG. 6. FIG. 7 is a flowchart of a battery abnormality detecting method according to an embodiment of the present invention, as shown in FIG. The process includes the following steps:

Step S702, collecting an electrical signal triggered by a battery state change of the battery;

Step S704, determining whether the electrical signal is greater than a corresponding preset threshold;

In step S706, if it is determined that the electrical signal is greater than the corresponding preset threshold, it is determined that the battery is abnormal.

In combination with the step S702 to the step S706, the battery abnormality detecting method provided by the embodiment of the present application corresponds to the battery abnormality detecting device shown in FIG. 1 to FIG. 6, that is, the electrical signal triggered by the battery state change of the battery is collected by the signal collector 12; The signal processor 14 determines whether the electrical signal is greater than the corresponding preset threshold. Finally, in the case that the electrical signal is greater than the corresponding preset threshold, the signal processor 14 outputs a trigger signal, and the alarm device 18 and the power source are triggered according to the trigger signal. Management circuit 17.

The total resistance of the coil in the second cavity in the signal collector 12 is r, the area of the coil closed per turn is S, and the magnetic induction intensity at the position of the coil is B. When the battery starts to have a bulge sign, the first cavity begins to move. At this time, the average angular velocity of the coil is ω. At this time, the induced electromotive force is generated due to the change of the magnetic flux, and the corresponding induced current value I is calculated. Simultaneous changes in the varistor produce a current value Ia, and the thermocouple on the bottom side also changes accordingly, producing a current value Ib (i.e., I, Ia, and Ib are electrical signals provided in embodiments of the present application). These three currents I, Ia, Ib are generated by the movement of the cavity due to abnormal signs of the battery. I is sent to the preamplifier circuit, and Ia and Ib are respectively compared with the range thresholds IA and IB of the respective batteries for normal operation. If Ia and Ib are both greater than the respective thresholds, it is determined that the battery is abnormal, and according to the three way The battery drum package information obtained by the currents I, Ia, Ib is output to a regulator in the signal processor (converted from an analog signal to a digital signal), and an electrical signal is output through the signal converter, sent to the alarm device, and alarmed by the alarm device. At the same time, the battery drum package information is sent to the power management circuit for protection to avoid accidents.

In the battery abnormality detecting method provided by the embodiment of the present application, the electrical signal triggered by the battery state change of the battery is collected; the signal in the electrical signal is determined to be greater than the corresponding preset threshold; and each signal in the electrical signal is determined to be greater than the corresponding pre- When the threshold result is YES, it is determined that the battery is abnormal. Therefore, it is possible to solve the problem that the battery state is inefficient due to the detection of the battery state in time and can only be effectively detected in the related art, and the problem is improved. The effect of detecting battery state efficiency.

Optionally, step S702 includes:

Step 1. In the case that the signal collector includes the first cavity and the second cavity, and the electrical signal includes the first electrical signal, the second electrical signal, and the third electrical signal, the first cavity is collected according to the change of the state of the battery. And the second cavity outputs a first electrical signal, a second electrical signal, and a third electrical signal, wherein the first electrical signal is a signal fed back by the varistor in the first cavity; and the second electrical signal is in the second cavity The signal fed back by the thermocouple; the third electrical signal is a signal fed back by the magnetic core in the first cavity and the induction coil in the second cavity.

2a to 4, the first cavity and the second cavity of the signal collector 12 generate an electrical signal according to a change in the state of the battery, wherein the generating process and the principle of electromagnetic induction generate an induced current I, and by triggering the first cavity The varistor generates Ia and the Ib that generates the thermocouple that triggers the second cavity.

Optionally, step S704 includes:

Step 2, comparing the first electrical signal and the second electrical signal with the corresponding first preset threshold and the second preset threshold by using the signal comparison module;

Step 3: Determine whether the first electrical signal is greater than a first preset threshold, and whether the second electrical signal is greater than a second predetermined threshold.

Combining Step 2 and Step 3, the signal comparison module in the signal processor 14 compares the first predetermined threshold corresponding to the first electrical signal with the first electrical signal, and the second electrical signal corresponds to the second electrical signal. The second preset threshold is compared to determine whether the first electrical signal is greater than the first predetermined threshold, and whether the second electrical signal is greater than the second predetermined threshold. In conjunction with Figures 2a and 2b, it is determined whether Ia and Ib are both greater than the corresponding IA and IB.

Optionally, step S706 includes:

Step 4, in the case that the first electrical signal is greater than the first predetermined threshold, and the second electrical signal is greater than the second predetermined threshold, converting the first electrical signal, the second electrical signal, and the third electrical signal by the regulator;

Step 5, generating a trigger signal by the signal converter according to the converted first electrical signal, the second electrical signal, and the third electrical signal;

Step6: Send the trigger signal to the power management circuit and the alarm device respectively.

FIG. 8 is a flowchart of a battery abnormality detecting method according to an embodiment of the present invention; In the case that the electrical signal is greater than the corresponding preset threshold, the step of outputting the trigger signal includes:

Step 001: When the battery begins to show signs of bulging, the cavity begins to move. At this time, the average angular velocity of the coil is ω, and the induced current value I is calculated at this time, and the battery is abnormal at this time;

Step 002: The current value I is sent to the preamplifier circuit, passed through the regulator, and then sent to the power management circuit through the signal converter;

Step 003: When the battery starts to bulge, the varistor also begins to change while the cavity moves, generating a current Ia;

Step 004: At this time, the range threshold IA when the battery is not bulged is sent to the comparator for comparison. If Ia>IA, it is determined that the battery is abnormal;

Step 005: when the battery starts to bulge, the cavity moves while the thermocouple also begins to change, generating a current Ib;

Step 006: At this time, the range threshold IB when the battery is not bulged is sent to the comparator for comparison. If Ib>IB, it is determined that the battery is abnormal;

Step 007: The battery abnormality information determined by the above Ia and Ib is sent to the regulator and the signal converter, and finally sent to the power management circuit;

Step 008: The power management circuit adopts corresponding battery protection measures to avoid an accident.

As apparent from the above, in conjunction with FIG. 9, FIG. 9 is a flowchart of a process for avoiding an accident in a battery abnormality detecting method according to an embodiment of the present invention. That is, after the battery abnormality information is collected (that is, in the case where the first electrical signal is greater than the first predetermined threshold and the second electrical signal is greater than the second predetermined threshold), the regulator converts the first An electrical signal and a second electrical signal are converted from an analog signal to a digital signal, and further converted by the signal converter to obtain a trigger signal for triggering the power management circuit, and the power management circuit takes measures to avoid a battery fault accident, that is, the power source The management circuit disconnects the battery and the power supply circuit that is electrically connected to the battery.

Optionally, after the step of determining that the battery is abnormal, the battery abnormality detecting method provided by the embodiment of the present application further includes:

Step S707, disconnecting the connection between the battery and the power supply circuit through the power management circuit according to the trigger signal;

Step S708, an alarm signal is sent through the alarm device according to the trigger signal.

Specifically, the steps of the alarm device performing the alarm are as follows:

Step 1: When there is battery abnormality information, input the information into the R1 end;

Step 2: When there is battery abnormality information, there is a voltage drop between the base and the emitter of the transistor T at this time;

Step 3: The power supply is generated on the resistor R2 and the light-emitting diode, and a current is passed;

Step 4: At this time, the LED is illuminated, and the alarm indicates that the battery has a bulging phenomenon.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present application, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). The instructions include a number of instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination. The forms are located in different processors.

Example 3

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, collecting an electrical signal triggered by a change in a battery state of the battery;

S2. Determine whether the electrical signal is greater than a corresponding preset threshold.

S3. Determine that the battery is abnormal when it is determined that the electrical signal is greater than a corresponding preset threshold.

Optionally, the storage medium is further configured to store program code for performing the steps of: including, in the signal collector, the first cavity and the second cavity, and the electrical signal comprising the first electrical signal, the second electrical signal, and the In the case of a three-electrical signal, the first cavity and the second cavity are collected to output a first electrical signal, a second electrical signal, and a third electrical signal, wherein the first electrical signal is the first cavity. a signal fed back by the medium varistor; the second electrical signal is a thermocouple in the second cavity The feedback signal; the third electrical signal is a signal fed back by the magnetic core in the first cavity and the induction coil in the second cavity.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, in this embodiment, the processor performs, by the signal comparison module, the first electrical signal and the second electrical signal respectively corresponding to the first preset threshold and the second preset according to the stored program code in the storage medium. The threshold is compared; determining whether the first electrical signal is greater than a first predetermined threshold, and whether the second electrical signal is greater than a second predetermined threshold.

Optionally, in this embodiment, the processor executes, according to the stored program code in the storage medium, that the first electrical signal is greater than the first preset threshold, and the second electrical signal is greater than the second predetermined threshold. The regulator converts the first electrical signal, the second electrical signal, and the third electrical signal; and generates a trigger signal according to the converted first electrical signal, the second electrical signal, and the third electrical signal by the signal converter; Send to power management circuit and alarm device.

Optionally, in this embodiment, the processor performs disconnection between the battery and the power supply circuit through the power management circuit according to the trigger signal according to the stored program code in the storage medium; and sends an alarm signal through the alarm device according to the trigger signal.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the application is not limited to any particular combination of hardware and software.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the present application, and various changes and modifications may be made to the present application. Where in the spirit of this application Within the principles, any modifications, equivalent substitutions, improvements, etc., are intended to be included within the scope of this application.

Industrial applicability

Claims

A battery abnormality detecting device includes: a signal collector and a signal processor, wherein

The signal collector is electrically connected to the battery and configured to collect an electrical signal generated by a change in a battery state of the battery;

The signal processor is electrically connected to the signal collector, and is configured to determine whether the electrical signal is greater than a preset threshold, and determine that the battery is abnormal if the electrical signal is greater than a preset threshold.
The apparatus of claim 1, wherein the electrical signal comprises a first electrical signal, a second electrical signal, and a third electrical signal, the signal collector comprising: a first cavity and a second cavity, wherein

The first cavity is sleeved with the second cavity, wherein a first horizontal plane of the first cavity is configured with a first type of electrical component, and a center of the horizontal plane in the first cavity is configured with a magnetic a core, the magnetic core being configured to trigger the first type of electrical component to output the first electrical signal by electromagnetic movement of the first cavity and the second cavity;

The inner wall of the second cavity is provided with an induction coil, the base of the second cavity is configured with a second type of electrical component, and the second type of electrical component is disposed through the first cavity and the second cavity The electromagnetic motion of the body triggers the second type of electrical component to output the second electrical signal;

The magnetic core is inserted through the induction coil, and the induction coil is configured to obtain the third electrical signal by detecting an electromagnetic induction electromotive force.
The apparatus according to claim 2, wherein said first type of electrical component comprises: a varistor arranged to detect a pressure generated by electromagnetic movement of said first cavity and said second cavity, output The first electrical signal; the second type of electrical component includes: a thermocouple configured to output the second electrical energy by detecting heat generated by electromagnetic movement of the first cavity and the second cavity signal.
The apparatus according to claim 2, wherein said signal processor comprises: a signal comparison module, a signal amplifying circuit, and a regulator, wherein

An input end of the signal comparison module is electrically connected to the first cavity and the second cavity, respectively, and configured to receive the first electrical signal and the second electrical signal, and the output of the signal comparison module The end is electrically connected to the input end of the regulator, and is configured to set the first electrical signal and the corresponding Comparing a preset threshold, and comparing the second electrical signal with a corresponding second preset threshold, and outputting a comparison result;

An input end of the signal amplifying circuit is electrically connected to the first cavity, and is configured to receive the third electrical signal; an output end of the signal amplifying circuit is electrically connected to the regulator, and is configured to output an amplified The third electrical signal;

The input ends of the regulator are electrically connected to the signal comparison module and the signal amplifying circuit respectively, and are configured to receive the comparison result and the amplified third electrical signal, and the comparison result and the amplified The third electrical signal is converted.
The apparatus according to claim 4, wherein said signal comparison module comprises: a first comparator and a second comparator, wherein

An input end of the first comparator is electrically connected to the first cavity, configured to compare the first electrical signal with the first preset threshold, and output a first comparison result to the adjustment Device

An input end of the second comparator is electrically connected to the second cavity, configured to compare the second electrical signal with the second preset threshold, and output a second comparison result to the adjustment Device.
The apparatus according to claim 4, further comprising: a signal converter, a power management circuit, and an alarm device, wherein

An input end of the signal converter is electrically connected to the regulator, and an output end of the signal converter is electrically connected to the power management circuit and the alarm device, respectively, when the first electrical signal is greater than Deriving the first preset threshold, and in the case of the second electrical signal and the second preset threshold, converting the received comparison result and the third electrical signal converted by the regulator into Triggering a signal and transmitting the trigger signal to the power management circuit and the alarm device, respectively;

The power management circuit is electrically connected to the signal converter, and is configured to disconnect the battery and the power supply circuit according to the trigger signal;

The alarm device is electrically connected to the signal converter and configured to issue an alarm signal according to the trigger signal.
The apparatus according to claim 6, wherein said alarm means comprises: a triode, a resistor set, and an alarm, wherein

An input end of the first resistor in the resistor set is electrically connected to the signal converter, and is configured to receive the trigger signal; an output end of the first resistor is electrically connected to a base of the triode;

The emitter of the triode is grounded, and the collector of the triode is electrically connected to one end of the alarm;

The other end of the alarm is electrically coupled to a second resistor in the set of resistors, and the second resistor is electrically coupled to a positive output of the power supply.
The apparatus according to claim 7, wherein said alarm comprises: a light emitting diode and/or a buzzer, wherein a cathode of said light emitting diode is electrically connected to a collector of said transistor, an anode of said light emitting diode Electrically connected to the second resistor.
A battery abnormality detecting method, which is applied to the battery abnormality detecting device according to any one of claims 1 to 8, comprising:

Acquiring an electrical signal triggered by a change in battery state of the battery;

Determining whether the electrical signal is greater than a corresponding preset threshold;

In case the electrical signal is greater than a corresponding preset threshold, the battery is determined to be abnormal.
The method of claim 9 wherein said step of collecting a battery triggered electrical signal comprises:

In the case where the signal collector includes the first cavity and the second cavity, and the electrical signal includes the first electrical signal, the second electrical signal, and the third electrical signal, the collection is performed according to a change in the state of the battery The first cavity and the second cavity output the first electrical signal, the second electrical signal, and the third electrical signal, wherein the first electrical signal is a pressure in the first cavity a signal fed back by the sensitive resistor; the second electrical signal is a signal fed back by the thermocouple in the second cavity; the third electrical signal is a magnetic core and the second cavity in the first cavity The feedback signal in the induction coil.
The method according to claim 10, wherein the step of determining whether the electrical signal is greater than a corresponding preset threshold comprises:

Comparing the first electrical signal and the second electrical signal with the corresponding first preset threshold and the second preset threshold by using a signal comparison module;

Determining whether the first electrical signal is greater than the first preset threshold, and whether the second electrical signal is greater than the second predetermined threshold.
The method according to claim 11, wherein in the case that the electrical signal is greater than a corresponding preset threshold, the step of determining the battery abnormality comprises:

And in the case that the first electrical signal is greater than the first predetermined threshold, and the second electrical signal is greater than the second predetermined threshold, the first electrical signal, the Converting the second electrical signal and the third electrical signal;

Generating a trigger signal by the signal converter according to the converted first electrical signal, the second electrical signal and the third electrical signal;

The trigger signals are sent to a power management circuit and an alarm device, respectively.
The method according to claim 12, after the step of determining the abnormality of the battery in the case that the electrical signal is greater than the corresponding preset threshold, the method further comprises:

Disconnecting the battery from the power supply circuit through the power management circuit according to the trigger signal;

And sending an alarm signal through the alarm device according to the trigger signal.