Lithium battery electric quantity acquisition device and method and related equipment

Abstract

The invention discloses a lithium battery electric quantity obtaining device and method and related equipment, and relates to the field of outdoor lithium batteries, the lithium battery electric quantity obtaining device comprises an entity key, a P-channel MOS tube, a controller and an electric quantity display component, the entity key and the electric quantity display component are arranged on the outer surface of a lithium battery, the entity key is arranged on a grounding line of a grid electrode of the P-channel MOS tube, and the controller is arranged on the outer surface of the lithium battery. The controller is at least used for detecting the battery charge state of the battery cell group, the positive electrode of the battery cell group in the lithium battery is connected with the source electrode of the P-channel MOS tube, and the controller is connected with the drain electrode of the P-channel MOS tube; the controller is connected with the electric quantity display component. The entity key is arranged outside the lithium battery, so that the MOS tube can be conveniently and directly triggered to be conducted through the entity key, the battery cell group supplies power to the controller in the lithium battery, the controller determines the residual electric quantity of the lithium battery according to the battery cell group, the residual electric quantity of the lithium battery is displayed through the electric quantity display part, and the residual electric quantity of the lithium battery can be conveniently and directly obtained; and an external power supply is not needed.

Description

Technical Field

[0001] The present application relates to the field of outdoor lithium battery technology, and in particular to a lithium battery power acquisition device, method and related equipment. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. When a lithium battery is left for a long time, it will be damaged due to a low SOC. Therefore, it is necessary to regularly test the SOC of the lithium battery and perform regular maintenance on the lithium battery. Among them, SOC (State of Charge) is the remaining power of the lithium battery expressed as a percentage.

[0003] Currently, maintenance personnel mainly use external power sources to activate lithium batteries to determine the current power status of lithium batteries. Due to the large number of lithium batteries and the need to frequently move external power sources to activate lithium batteries one by one, the maintenance process of lithium batteries is cumbersome. Summary of the invention

[0004] In view of the above problems, the present application provides a lithium battery power acquisition device, method and related equipment to simplify the lithium battery maintenance process. The specific solution is as follows:

[0005] In a first aspect, the present application provides a lithium battery power acquisition device, the lithium battery power acquisition device comprising: a physical button, a P-channel MOS tube, a controller and a power display component, the physical button and the power display component are arranged on the outer surface of the lithium battery, the physical button is arranged on the grounding line of the gate of the P-channel MOS tube, the controller is at least used to detect the battery charge state of the battery pack,

[0006] The positive electrode of the cell group inside the lithium battery is connected to the source electrode of the P-channel MOS tube, and the controller is connected to the drain electrode of the P-channel MOS tube;

[0007] The controller is connected to the power display component.

[0008] In a possible implementation, the lithium battery power acquisition device further includes a first transistor;

[0009] The base of the first transistor is connected to the controller, the collector of the first transistor is connected to the gate of the P-channel MOS transistor, and the emitter of the first transistor is grounded.

[0010] The second aspect of the present application provides a lithium battery power acquisition device, the lithium battery power acquisition device comprising: a physical button, an N-channel MOS tube, a second transistor, a controller and a power display component, the physical button and the power display component are arranged on the outer surface of the lithium battery, the controller is at least used to detect the battery charge state of the battery pack,

[0011] The positive electrode of the cell group inside the lithium battery is connected to the collector of the second triode and the base of the second triode;

[0012] The emitter of the second transistor is connected to the drain of the N-channel MOS transistor, and the controller is connected to the source of the N-channel MOS transistor;

[0013] The positive electrode of the cell group inside the lithium battery is connected to the gate of the N-channel MOS tube through the physical button;

[0014] The controller is connected to the power display component.

[0015] In a possible implementation, the lithium battery power acquisition device further includes: a third triode, a fourth triode, a fifth triode and a first resistor.

[0016] The base of the third transistor is connected to the connection line between the gate of the N-channel MOS transistor and the physical key, the collector of the third transistor is connected to the positive electrode of the battery cell group inside the lithium battery through the first resistor, and the emitter of the third transistor is grounded;

[0017] The base of the fourth transistor is connected to the connection line between the first resistor and the collector of the third transistor, the emitter of the fourth transistor is connected to the connection line between the first resistor and the positive electrode of the battery cell group inside the lithium battery, and the collector of the fourth transistor is connected to the connection line between the base of the third transistor and the gate of the N-channel MOS transistor;

[0018] The collector of the fifth transistor is connected to the connection line between the collector of the fourth transistor and the base of the third transistor, the base of the fifth transistor is connected to the controller, and the emitter of the fifth transistor is grounded.

[0019] The third aspect of the present application provides a lithium battery power acquisition method, which is applied to the lithium battery power acquisition device of the first aspect or any implementation of the first aspect, or applied to the lithium battery power acquisition device of the second aspect or any implementation of the second aspect, and the lithium battery power acquisition method includes:

[0020] After the controller is powered on, the data of the battery pack is collected to calculate the remaining power of the lithium battery. When the physical button is triggered, the MOS tube is turned on, so that the battery pack supplies power to the controller;

[0021] The controller controls the power display component according to the capacity of the battery cell group, so that the power display component displays the remaining power of the lithium battery in a lighting manner corresponding to the remaining power.

[0022] In a possible implementation, the data of the battery cell group includes battery cell voltage data, battery cell current data, and battery cell temperature data, and collecting the data of the battery cell group to calculate the remaining power of the lithium battery includes:

[0023] The controller will calculate the battery cell voltage data, the battery cell current data and the battery cell temperature data through preset battery cell data model parameters, calculate and obtain battery cell SOC data, and determine the battery cell SOC data as the remaining power of the lithium battery.

[0024] In a possible implementation, the power display component includes a first LED, a second LED, a third LED, and a fourth LED, and the controller controls the power display component according to the capacity of the battery cell group so that the power display component lights up in a manner corresponding to the remaining power to display the remaining power of the lithium battery, including:

[0025] If the remaining power of the lithium battery falls within the range of 0% to 25%, the controller controls the first LED to flash, and controls the second LED, the third LED and the fourth LED to not light up;

[0026] If the remaining power of the lithium battery falls within the range of 26% to 50%, the controller controls the first LED to be always on, controls the second LED to flash, and controls the third LED and the fourth LED to be off;

[0027] If the remaining power of the lithium battery falls within the range of 51% to 75%, the controller controls the first LED and the second LED to be always on, controls the third LED to flash, and controls the fourth LED to be off;

[0028] If the remaining power of the lithium battery falls within the range of 76% to 99%, the controller controls the first LED, the second LED and the third LED to be always on, and controls the fourth LED to flash;

[0029] If the remaining power of the lithium battery is 100%, the controller controls the first LED, the second LED, the third LED and the fourth LED to be always on.

[0030] In a possible implementation, the method further includes:

[0031] After a preset time, the controller controls the MOS tube to be non-conductive, so that the battery cell group stops supplying power to the controller.

[0032] The fourth aspect of the present application provides a computer program product, including computer-readable instructions. When the computer-readable instructions are executed on a controller, the controller implements the lithium battery power acquisition method of the third aspect or any implementation of the third aspect.

[0033] A fifth aspect of the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by a controller, the controller can implement the lithium battery power acquisition method of the third aspect or any implementation of the third aspect.

[0034] By means of the above technical scheme, the present application provides a lithium battery power acquisition device, method and related equipment. The device is provided with a physical button on the outside of the lithium battery, so that the operation and maintenance personnel can directly trigger the MOS tube inside the lithium battery to conduct through the physical button, so that the battery cell group supplies power to the controller inside the lithium battery. The controller determines the remaining power of the lithium battery according to the battery cell group, and displays the remaining power of the lithium battery through the power display component, so that the operation and maintenance personnel can directly obtain the remaining power of the lithium battery without activating the lithium battery through an external power supply. The design of this device allows the operation and maintenance personnel to obtain the power of the lithium battery through an external trigger component. Even if there are a large number of lithium batteries, compared with moving the external power supply to activate and check the lithium batteries one by one, this device can reduce the power query time of the lithium battery and effectively simplify the maintenance process of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0036] Figure 1 A schematic diagram of a connection of a lithium battery power acquisition device provided in an embodiment of the present application;

[0037] Figure 2 An external schematic diagram of a lithium battery power acquisition device provided in an embodiment of the present application;

[0038] Figure 3 A connection diagram of another lithium battery power acquisition device provided in an embodiment of the present application;

[0039] Figure 4A connection diagram of another lithium battery power acquisition device provided in an embodiment of the present application;

[0040] Figure 5 A connection diagram of another lithium battery power acquisition device provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of a lithium battery power acquisition method provided in an embodiment of the present application;

[0042] Figure 7 A display logic diagram of a first LED, a second LED, a third LED and a fourth LED provided in an embodiment of the present application.

[0043] Reference numerals:

[0044] 1-physical button; 2-P-channel MOS tube; 3-controller; 4-power display component; 5-first transistor; 6-N-channel MOS tube; 7-second transistor; 8-third transistor; 9-fourth transistor; 10-fifth transistor; 11-first resistor. DETAILED DESCRIPTION

[0045] The following describes the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0046] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0047] The terms "first", "second" etc. in the specification of the application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable in appropriate circumstances, and this is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0048] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. The battery's SOC (State of Charge) can characterize the ratio of the remaining power of a lithium battery to its rated capacity, and is an important indicator for measuring the power state of a lithium battery. When a lithium battery is left for a long time, a low SOC can cause the internal electrolyte of the lithium battery to decompose and the material to be damaged, thereby causing damage to the lithium battery. Therefore, it is necessary to regularly test the SOC of the lithium battery and perform regular maintenance on the lithium battery.

[0049] Since outdoor lithium batteries are exposed to solar radiation for a long time, they use fully sealed colloids to ensure that the internal circuits and cells of the batteries will not be damaged. Therefore, when maintaining outdoor lithium batteries, an external power supply must be used to activate the outdoor lithium batteries to view the current status of the current lithium batteries. The external power supply needs to be powered by external wiring to view the current status of the outdoor lithium batteries. When there are a large number of outdoor lithium batteries to be maintained, and some of them include outdoor lithium batteries with uneven storage time or long storage time, the workload of the maintenance work becomes huge, and it is also necessary to frequently move the external power supply to activate the lithium batteries one by one, which not only brings safety risks, but also makes the maintenance process of lithium batteries cumbersome.

[0050] In order to solve the above problems, the present application embodiment provides a lithium battery power acquisition device. The lithium battery power acquisition device of the present application embodiment is described in detail below with reference to the accompanying drawings. Figure 1 As shown, a lithium battery power acquisition device provided in an embodiment of the present application may include a physical button 1, a P-channel MOS tube 2, a controller 3 and a power display component 4. The physical button 1 and the power display component 4 are arranged on the outer surface of the lithium battery, and the controller 3 is at least used to detect the battery charge state of the battery pack.

[0051] like Figure 1 As shown, the physical button 1 is arranged on the ground circuit of the gate of the P-channel MOS tube 2, the positive electrode of the battery cell group inside the lithium battery is connected to the source of the P-channel MOS tube 2, and the controller 3 is connected to the drain of the P-channel MOS tube 2; the controller 3 is connected to the power display component 4.

[0052] Among them, Figure 1As shown, in this embodiment, a voltage-dividing resistor is connected between the gate and source of the P-channel MOS tube 2 to facilitate providing a suitable bias voltage for the P-channel MOS tube 2. The bias voltage can ensure that the P-channel MOS tube 2 can be normally turned on or off under normal working conditions. The voltage-stabilizing diode can ensure that the voltage across the voltage-dividing resistor is in a stable state. In this embodiment, a clamping diode is also provided on the grounding line of the gate of the P-channel MOS tube 2. When the physical button 1 is triggered, the gate of the P-channel MOS tube 2 is grounded, and the clamping diode can limit the potential of the gate to a low potential. The diode connected to the controller 3 is used to maintain circuit stability and protect the controller 3.

[0053] The physical button 1 can be a trigger component, and the exterior of the physical button 1 and the power display component 4 can be as follows: Figure 2 As shown, the physical button 1 is fixed by a groove. The power display component is a component used to display the SOC of the battery, and its display method can be set according to actual conditions. For example, if the number representing the SOC of the battery is directly displayed, the power display component can be a liquid crystal display; if the SOC of the battery is displayed in different display methods, the power display component can be a plurality of LED lights, and the combination of the lighting of the plurality of LED lights is used to indicate the SOC of the battery. Figure 2 As shown, in this embodiment, the power display component 4 is four LED lights. The power display component 4 receives display control instructions from the controller and displays the SOC of the battery calculated by the controller in different lighting modes. The four LED lights next to the four LED lights used to indicate the battery SOC are display components used to indicate the current state of the lithium battery. Specifically, RUN can mean running; ALM can mean alarm; CHG can mean charging; and DCHG can mean discharging. In addition, since the physical buttons and power display components are arranged on the outer surface of the lithium battery, this embodiment adds a waterproof and sealed design for the physical buttons and power display components to prevent environmental influences.

[0054] The physical button can be pressed or touched to trigger the connection of the circuit inside the physical button, so that the control circuit of the lithium battery is connected, so that the controller can obtain the power supply of the battery cell group in the lithium battery and operate, and calculate the real-time capacity of the lithium battery. Among them, the battery cell group can also be called a battery pack or a battery module. The battery cell is the most basic and core component of the lithium battery, responsible for storing and releasing energy. The battery cell group can be a combination of multiple batteries in a specific way to meet the voltage, capacity and power requirements of different application scenarios.

[0055] The P-channel MOS transistor used in this embodiment is a P-channel enhancement type MOS transistor. It is mainly formed by doping two P-type doped regions on an N-type silicon substrate, which serve as a source (S) and a drain (D) respectively. A layer of silicon dioxide insulating layer is used to isolate the source and the drain. An aluminum electrode is installed on the silicon dioxide insulating layer between the drain and the source as a gate (G). When a negative voltage relative to the source is applied to the gate, and the gate-source voltage (V GS ) is less than the threshold voltage, the N-type silicon surface under the gate can present a P-type inversion layer, forming a conductive channel connecting the source and the drain. Then the conduction condition of the P-channel MOS tube can be: when a negative voltage relative to the source is applied to the gate, the gate-source voltage is not greater than the threshold voltage, and the drain voltage is negative relative to the source voltage, and the source voltage is positive or grounded.

[0056] Therefore, in this embodiment, the source in the P-channel MOS tube is connected to the positive electrode of the battery cell group inside the lithium battery, and the drain is connected to the controller, satisfying the condition of "the drain voltage is negative relative to the source voltage, and the source voltage is positive or grounded", and the physical button is set on the ground circuit of the gate. Then, when the physical button is triggered, the ground circuit of the gate is connected, the gate is grounded, and the gate is a negative voltage compared to the source, so that a conductive channel is generated between the source and the drain. At this time, the P-channel MOS tube is turned on, so that the battery cell group inside the lithium battery supplies power to the controller, and the current direction is from the source to the drain.

[0057] The controller is a processing chip with computing and control functions, which is mainly used to detect the battery state of charge (SOC) of the battery pack. Optionally, it can be a microchip or a single-chip microcomputer. In this embodiment, the controller can be divided into a power supply unit and a control unit. The power supply unit is used to obtain an external power supply (in this embodiment, connected to the positive electrode of the battery pack) and supply power to the control unit. The control unit is used to realize computing and control.

[0058] Since the triggering action of the physical button is a short-term action, the circuit in the physical button is only connected for a short time. When the circuit in the physical button is disconnected, the P-channel MOS tube can be cut off, the battery cell group stops supplying power to the controller, the controller stops working, and the power display component cannot continuously display the battery SOC for a period of time. Figure 3 As shown, in this embodiment, a first transistor 5 can also be provided for the lithium battery power acquisition device, so that the P-channel MOS tube 2 can be separated from the control of the physical button 1 and controlled by the controller 3 to extend the conduction time of the P-channel MOS tube 2, so that the battery cell group can continue to supply power to the controller 3, and the power display component 4 can continue to display the battery SOC. Specifically, the first transistor 5 in this embodiment is an NPN transistor.

[0059] like Figure 3As shown, the base of the first transistor 5 is connected to the controller 3, the collector of the first transistor 5 is connected to the gate of the P-channel MOS transistor 2, and the emitter of the first transistor 5 is grounded.

[0060] The capacitor is used for filtering, and the resistor connected to the base and emitter of the first transistor 5 is the pull-down resistor of the first transistor 5, which is used to ensure the stability and reliability of the first transistor 5. Figure 3 Compared to Figure 1 The newly added resistors all have the function of current limiting.

[0061] When the triggering action of the physical button 1 causes the controller 3 to be briefly powered, the controller 3 can output a high level to the base of the first transistor 5, so that the first transistor 5 is turned on, so that even after the line at the physical button 1 is disconnected, the gate of the P-channel MOS tube 2 is still grounded through the first transistor 5, and the gate is still a negative voltage, so the P-channel MOS tube 2 can continue to be turned on.

[0062] After a preset time, the controller 3 can output a low level or stop outputting to the base of the first transistor 5, the first transistor 5 is turned off, the P-channel MOS tube 2 is turned off, the battery cell group stops supplying power to the controller 3, and the controller 3 stops operating, thereby realizing automatic power-off of the lithium battery.

[0063] Of course, when the first transistor is a PNP transistor, the controller can output a low level to the base of the first transistor to turn on the first transistor to achieve the same control effect. When the controller outputs a high level to the base of the first transistor or stops outputting, the same automatic power-off effect is achieved.

[0064] Furthermore, in this embodiment, the P-channel MOS tube may be replaced with an N-channel MOS tube to achieve the same control effect. The specific contents may be as follows:

[0065] like Figure 4 As shown, the lithium battery power acquisition device may include: a physical button 1, an N-channel MOS tube 6, a second triode 7, a controller 3 and a power display component 4. The physical button 1 and the power display component 4 are arranged on the outer surface of the lithium battery, and the controller 3 is at least used to detect the battery charge state of the battery pack.

[0066] like Figure 4 As shown, the positive electrode of the battery cell group inside the lithium battery is connected to the collector of the second triode 7 and the base of the second triode 7;

[0067] The emitter of the second transistor 7 is connected to the drain of the N-channel MOS tube 6, and the controller 3 is connected to the source of the N-channel MOS tube 6; the positive electrode of the battery cell group inside the lithium battery is connected to the gate of the N-channel MOS tube 6 through the physical button 1; the controller 3 is connected to the power display component 4.

[0068] The N-channel MOS transistor used in this embodiment is an N-channel enhancement MOS transistor, which is mainly composed of a P-type substrate and two high-concentration N diffusion regions. The drain (D) and the source (S) are respectively led out from the two high-doping concentration N diffusion regions and isolated by a layer of silicon dioxide insulation layer. An aluminum electrode is installed on the silicon dioxide insulation layer between the drain and the source as a gate (G). When a forward voltage relative to the source is applied to the gate, and the gate-source voltage (V GS ) is not less than the threshold voltage, and more electrons gather in the surface layer of the P-type semiconductor under the gate to form a conductive channel connecting the source and the drain. Then the conduction condition of the N-channel MOS tube is: when a forward voltage relative to the source is applied to the gate, the gate-source voltage (V GS ) is not less than the threshold voltage.

[0069] Therefore, in this embodiment, the drain of the N-channel MOS tube is connected to the positive electrode of the battery cell group through the second tertiary tube, the source of the N-channel MOS tube is connected to the controller, and the gate of the N-channel MOS tube is connected to the positive electrode of the battery cell group inside the lithium battery through the physical button. When the physical button is triggered, the gate is connected to the positive electrode of the battery cell group, and the gate has a positive voltage compared to the source, so that a conductive channel is generated between the source and the drain. At this time, the N-channel MOS tube is turned on, so that the battery cell group inside the lithium battery supplies power to the controller, and the current direction is from the drain to the source.

[0070] like Figure 4 As shown, the function of the second transistor 7 is to step down the voltage, so as to ensure that after the N-channel MOS transistor 6 is turned on, the source and gate of the N-channel MOS transistor 6 still have a voltage difference and can continue to be turned on. The resistors connected to the base and collector of the second transistor 7 respectively have a current limiting function, which is used to protect the second transistor 7. The voltage regulator diode can ensure the stability of the voltage at the base of the second transistor 7. The function of the resistor connected to the physical button 1 is also a current limiting function.

[0071] In this embodiment, in order to avoid the physical key being turned on for a short time, the N-channel MOS tube is turned on for a short time only. Figure 5 As shown, in this embodiment, the third transistor 8, the fourth transistor 9, the fifth transistor 10 and the first resistor 11 can also be set for the lithium battery power acquisition device, so that the N-channel MOS transistor 6 can be separated from the control of the physical button 1 and controlled by the controller 3 to extend the conduction time of the N-channel MOS transistor 6, so that the battery cell group can continue to supply power to the controller 3, and the power display component 4 can continue to display the battery SOC. Specifically, the third transistor 8 and the fifth transistor 10 are NPN transistors, and the fourth transistor 9 is a PNP transistor.

[0072] like Figure 5As shown, the base of the third transistor 8 is connected to the connection line between the gate of the N-channel MOS transistor 6 and the physical button 1, the collector of the third transistor 8 is connected to the positive electrode of the battery cell group inside the lithium battery through the first resistor 11, and the emitter of the third transistor 8 is grounded;

[0073] The base of the fourth triode 9 is connected to the connection line between the first resistor 11 and the collector of the third triode 8, the emitter of the fourth triode 9 is connected to the connection line between the first resistor 11 and the positive electrode of the battery cell group inside the lithium battery, and the collector of the fourth triode 9 is connected to the connection line between the base of the third triode 8 and the gate of the N-channel MOS tube 6;

[0074] The collector of the fifth transistor 10 is connected to the connection line between the collector of the fourth transistor 9 and the base of the third transistor 8 , the base of the fifth transistor 10 is connected to the controller 3 , and the emitter of the fifth transistor 10 is grounded.

[0075] in, Figure 5 Compared to Figure 4 The newly added resistors all have the function of current limiting.

[0076] When the triggering action of the physical key 1 causes the N-channel MOS tube 6 to be connected to the positive electrode of the battery cell group, a high level is applied to the base of the third triode 8 connected to its circuit, so that the third triode 8 is connected, resulting in a voltage difference across the first resistor 11, and the fourth triode 9 is turned on, so that even after the circuit at the physical key 1 is disconnected, the gate of the N-channel MOS tube 6 is still connected to the positive electrode of the battery cell group through the fourth triode 9, the N-channel MOS tube 6 can continue to be turned on, and the base of the third triode 8 is still applied with a high level by the positive electrode of the battery cell group through the fourth triode 9 and continues to be turned on, and the fourth triode 9 also continues to be turned on due to the conduction of the third triode 8, at this time, the third triode 8 and the fourth triode 9 are interlocked.

[0077] After the preset time, the controller 3 can output a high level to the base of the fifth transistor 10, so that the fifth transistor 10 is turned on, and the base of the third transistor 8 is grounded through the fifth transistor 10, the third transistor 8 is turned off, causing the fourth transistor 9 to be turned off, and the gate voltage of the N-channel MOS tube 6 is pulled down (grounded), the N-channel MOS tube 6 is turned off, the battery cell group stops supplying power to the controller 3, the controller 3 stops operating, and the lithium battery is automatically powered off.

[0078] The present application provides a lithium battery power acquisition device, which is provided with a physical button on the outside of the lithium battery, so that the operation and maintenance personnel can directly trigger the MOS tube inside the lithium battery to conduct through the physical button, so that the battery group supplies power to the controller inside the lithium battery, and the controller determines the remaining power of the lithium battery according to the battery group, and displays the remaining power of the lithium battery through the power display component, so that the operation and maintenance personnel can directly obtain the remaining power of the lithium battery without activating the lithium battery through an external power supply. The design of this device allows the operation and maintenance personnel to obtain the power of the lithium battery through an external trigger component, even if there are a large number of lithium batteries, compared with moving the external power supply to activate and check the lithium batteries one by one, this device can reduce the power query time of the lithium battery, and effectively simplify the maintenance process of the lithium battery.

[0079] A lithium battery power acquisition device provided in an embodiment of the present application is introduced above, and a method for applying the lithium battery power acquisition device is introduced below.

[0080] See also Figure 6 , Figure 6 A schematic diagram of a lithium battery power acquisition method provided in an embodiment of the present application. Figure 6 As shown, the lithium battery power acquisition method includes:

[0081] S10, after the controller is powered on, the data of the battery pack is collected to calculate the remaining power of the lithium battery, wherein when the physical button is triggered, the MOS tube is turned on, so that the battery pack supplies power to the controller;

[0082] S11. The controller controls the power display component according to the capacity of the battery cell group, so that the power display component lights up in a manner corresponding to the remaining power to display the remaining power of the lithium battery.

[0083] The present application provides a method for obtaining the power of a lithium battery. After a physical button is triggered, the MOS tube is turned on, so that the battery cell group supplies power to the controller, and the remaining power of the lithium battery is directly calculated by the controller, and the different remaining power of the lithium battery are displayed through different display modes of the power display component. This is convenient for operation and maintenance personnel to directly obtain the remaining power of the lithium battery according to the display mode of the power display component, without the need to activate the lithium battery through an external power supply, thereby reducing the power query time of the lithium battery and effectively simplifying the maintenance process of the lithium battery.

[0084] In a possible implementation, the data of the battery cell group may include battery cell voltage data, battery cell current data, and battery cell temperature data. In step S10, the controller collects the data of the battery cell group and calculates the remaining power of the lithium battery, which may include:

[0085] The controller will calculate the cell voltage data, cell current data and cell temperature data through the preset cell data model parameters, calculate the cell SOC data, and determine the cell SOC data as the remaining power of the lithium battery.

[0086] The cell voltage data may refer to the current voltage of the cells in the cell group, the cell current data may refer to the current discharge current of the cells in the cell group, and the cell temperature data may refer to the current temperature of the cell group.

[0087] The controller of this embodiment can be divided into a power supply unit and a control unit. In the control unit, there are preset battery cell data model parameters, which are model parameters of the big data model trained according to battery cell related data. Specifically, the training data set of the big data model is obtained according to actual data sampling, and the training data set includes a plurality of different value combinations of battery cell voltage data, battery cell current data, and battery cell temperature data, and the battery cell SOC data corresponds to different value combinations of battery cell voltage data, battery cell current data, and battery cell temperature data, indicating the expected value of the battery cell SOC data under a certain value combination of battery cell voltage data, battery cell current data, and battery cell temperature data. By training the big data model, the parameters of the big data model are continuously adjusted, so that the big data model can determine the corresponding battery cell SOC data under the real-time value of the battery cell voltage data, battery cell current data, and battery cell temperature data. When the big data model training is completed, the model parameters of the big data model are used as the battery cell data model parameters in the control unit and configured in the control unit, so that the control unit can calculate the real-time capacity (battery cell SOC data) of the corresponding battery cell based on the real-time sampled battery cell data (battery cell voltage data, battery cell current data, battery cell temperature data).

[0088] In a possible implementation, the power display component may include a first LED, a second LED, a third LED, and a fourth LED, and step S11 may specifically include:

[0089] If the remaining power of the lithium battery falls within the range of 0% to 25%, the controller controls the first LED to flash, and controls the second LED, the third LED and the fourth LED to not light up;

[0090] If the remaining power of the lithium battery falls within the range of 26% to 50%, the controller controls the first LED to be always on, controls the second LED to flash, and controls the third LED and the fourth LED to be off;

[0091] If the remaining power of the lithium battery falls within the range of 51% to 75%, the controller controls the first LED and the second LED to be always on, controls the third LED to flash, and controls the fourth LED to be off;

[0092] If the remaining power of the lithium battery falls within the range of 76% to 99%, the controller controls the first LED, the second LED and the third LED to be always on, and controls the fourth LED to flash;

[0093] If the remaining power of the lithium battery is 100%, the controller controls the first LED, the second LED, the third LED and the fourth LED to be always on.

[0094] The display logic of the first LED, the second LED, the third LED and the fourth LED can be as follows: Figure 7 shown.

[0095] In a possible implementation, the method further includes:

[0096] After a preset time, the controller controls the MOS tube to be non-conductive, so that the battery cell group stops supplying power to the controller.

[0097] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on a controller, the controller implements any of the lithium battery power acquisition methods provided in the embodiments of the present application.

[0098] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When the one or more computer programs are executed by a controller, the controller can implement any lithium battery power acquisition method provided in the embodiment of the present application.

[0099] It should also be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the device embodiments provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

[0100] Through the description of the above implementation mode, the technicians in the field can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0101] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0102] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a training device, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device, or data center. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device, a data center, etc. that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

[0103] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0104] It is understandable that before using the technical solutions disclosed in the embodiments of the present disclosure, the types, scope of use, usage scenarios, etc. of the personal information involved in the present disclosure should be informed to the user and the user's authorization should be obtained in an appropriate manner in accordance with relevant laws and regulations.

[0105] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lithium battery power acquisition device, characterized in that: The lithium battery power acquisition device comprises: a physical button, a P-channel MOS tube, a controller and a power display component, wherein the physical button and the power display component are arranged on the outer surface of the lithium battery, the physical button is arranged on the grounding line of the gate of the P-channel MOS tube, and the controller is at least used to detect the battery charge state of the battery pack. The positive electrode of the cell group inside the lithium battery is connected to the source electrode of the P-channel MOS tube, and the controller is connected to the drain electrode of the P-channel MOS tube; The controller is connected to the power display component.

2. The lithium battery power acquisition device according to claim 1, characterized in that: The lithium battery power acquisition device also includes a first transistor; The base of the first transistor is connected to the controller, the collector of the first transistor is connected to the gate of the P-channel MOS transistor, and the emitter of the first transistor is grounded.

3. A lithium battery power acquisition device, characterized in that: The lithium battery power acquisition device comprises: a physical button, an N-channel MOS tube, a second transistor, a controller and a power display component, wherein the physical button and the power display component are arranged on the outer surface of the lithium battery, and the controller is at least used to detect the battery charge state of the battery pack. The positive electrode of the cell group inside the lithium battery is connected to the collector of the second triode and the base of the second triode; The emitter of the second transistor is connected to the drain of the N-channel MOS transistor, and the controller is connected to the source of the N-channel MOS transistor; The positive electrode of the cell group inside the lithium battery is connected to the gate of the N-channel MOS tube through the physical button; The controller is connected to the power display component.

4. The lithium battery power acquisition device according to claim 3, characterized in that: The lithium battery power acquisition device also includes: a third triode, a fourth triode, a fifth triode and a first resistor. The base of the third transistor is connected to the connection line between the gate of the N-channel MOS transistor and the physical key, the collector of the third transistor is connected to the positive electrode of the battery cell group inside the lithium battery through the first resistor, and the emitter of the third transistor is grounded; The base of the fourth transistor is connected to the connection line between the first resistor and the collector of the third transistor, the emitter of the fourth transistor is connected to the connection line between the first resistor and the positive electrode of the battery cell group inside the lithium battery, and the collector of the fourth transistor is connected to the connection line between the base of the third transistor and the gate of the N-channel MOS transistor; The collector of the fifth transistor is connected to the connection line between the collector of the fourth transistor and the base of the third transistor, the base of the fifth transistor is connected to the controller, and the emitter of the fifth transistor is grounded.

5. A method for obtaining the power of a lithium battery, characterized in that: Applied to the lithium battery power acquisition device described in any one of claims 1-2 above, or applied to the lithium battery power acquisition device described in any one of claims 3-4 above, the lithium battery power acquisition method comprises: After the controller is powered on, the data of the battery pack is collected to calculate the remaining power of the lithium battery. When the physical button is triggered, the MOS tube is turned on, so that the battery pack supplies power to the controller; The controller controls the power display component according to the capacity of the battery cell group, so that the power display component displays the remaining power of the lithium battery in a lighting manner corresponding to the remaining power.

6. The lithium battery power acquisition method according to claim 5, characterized in that: The data of the battery cell group includes battery cell voltage data, battery cell current data and battery cell temperature data. The data of the battery cell group is collected to calculate the remaining power of the lithium battery, including: The controller will calculate the battery cell voltage data, the battery cell current data and the battery cell temperature data through preset battery cell data model parameters, calculate and obtain battery cell SOC data, and determine the battery cell SOC data as the remaining power of the lithium battery.

7. The lithium battery power acquisition method according to claim 5, characterized in that: The power display component includes a first LED, a second LED, a third LED and a fourth LED. The controller controls the power display component according to the capacity of the battery pack so that the power display component lights up in a manner corresponding to the remaining power to display the remaining power of the lithium battery, including: If the remaining power of the lithium battery falls within the range of 0% to 25%, the controller controls the first LED to flash, and controls the second LED, the third LED and the fourth LED to not light up; If the remaining power of the lithium battery falls within the range of 26% to 50%, the controller controls the first LED to be always on, controls the second LED to flash, and controls the third LED and the fourth LED to be off; If the remaining power of the lithium battery falls within the range of 51% to 75%, the controller controls the first LED and the second LED to be always on, controls the third LED to flash, and controls the fourth LED to be off; If the remaining power of the lithium battery falls within the range of 76% to 99%, the controller controls the first LED, the second LED and the third LED to be always on, and controls the fourth LED to flash; If the remaining power of the lithium battery is 100%, the controller controls the first LED, the second LED, the third LED and the fourth LED to be always on.

8. The lithium battery power acquisition method according to claim 5, characterized in that: Also includes: After a preset time, the controller controls the MOS tube to be non-conductive, so that the battery cell group stops supplying power to the controller.

9. A computer program product, characterized in that It includes computer-readable instructions. When the computer-readable instructions are executed on a controller, the controller implements the lithium battery power acquisition method as described in any one of claims 5 to 8.

10. A computer storage medium, characterized in that: The storage medium carries one or more computer programs, and when the one or more computer programs are executed by the controller, the controller can implement the lithium battery power acquisition method as described in any one of claims 5 to 8.

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