Mobile power supply, battery detection method and electronic equipment

Abstract

The invention discloses a mobile power supply, a battery detection method and electronic equipment, the mobile power supply comprises a metal shell and a battery pack, the battery pack is arranged in the metal shell, and a first end of the metal shell is detachably provided with a negative electrode electrically connected with a negative electrode of the battery pack; the control circuit board is electrically connected with the positive electrode of the battery pack through the positive electrode to obtain sampling current and battery parameters of the battery pack so as to calculate the battery capacity and the battery health value of the battery pack based on the sampling current and the battery parameters; the display panel and the second end of the metal shell are detachably arranged, and a display screen arranged on the display panel is connected with the control circuit board and used for displaying the battery capacity and the battery health value. The battery capacity and the battery health value of the battery pack can be calculated through the preset battery parameters and the sampling current collected in real time, and the metal shell and the negative electrode can be detached when the battery health value is abnormal, so that replacement of the battery pack is realized.

Description

Technical Field

[0001] The present application relates to the technical field of charging devices, and in particular to a mobile power source, a battery detection method and an electronic device. Background Art

[0002] With the continuous development of science and technology, various power electronic products have played an indispensable role in people's life, entertainment and work. Generally, the battery life of power electronic products is limited, and mobile power supplies are needed to charge electronic products to improve their battery life. Most of the existing mobile power supplies are non-detachable structures, and the battery status inside the mobile power supply cannot be monitored. When the battery inside the mobile power supply is abnormal or the battery health is poor, the battery inside the mobile power supply cannot be replaced in time, resulting in the problem of short service life of the mobile power supply. Summary of the invention

[0003] The present application provides a mobile power supply, a battery detection method and an electronic device, which can solve the problem that the existing mobile power supply cannot be disassembled and the battery cannot be monitored, resulting in a short service life.

[0004] In a first aspect, the present application provides a mobile power supply, which includes:

[0005] A metal shell and a battery pack, wherein both ends of the metal shell are open, the interior of the metal shell is used to accommodate the battery pack, and a negative electrode is detachably provided at the first end of the metal shell, and the negative electrode is electrically connected to the negative electrode of the battery pack;

[0006] A control circuit board, wherein a positive electrode is disposed on the control circuit board, and the control circuit board is electrically connected to the positive electrode of the battery pack through the positive electrode, and the control circuit board is used to obtain a sampled current and battery parameters of the battery pack, so as to calculate a battery capacity and a battery health value of the battery pack based on the sampled current and the battery parameters;

[0007] The display panel is detachably arranged with respect to the second end of the metal shell. At least one charging interface and a display screen are arranged on the display panel. At least one charging interface is connected to the control circuit board for supplying power to the outside according to the control signal of the control circuit board. The display screen is connected to the control circuit board for displaying the battery capacity and the battery health value.

[0008] Furthermore, the control circuit board is provided with a sampling resistor and a controller, and the two ends of the sampling resistor are respectively connected to the controller and the positive electrode, which are used to obtain the sampling current of the battery pack, and the controller is also used to obtain the sampling time, calibrate the battery capacity and the evaluation coefficient;

[0009] The controller is used to calculate the battery capacity based on the sampled current and the sampling time, and calculate the battery health value based on the battery capacity, the calibrated battery capacity and the evaluation coefficient;

[0010] In response to the battery health value being lower than a preset threshold, the controller is used to generate a battery health abnormality signal, and the battery health abnormality signal is displayed through the display panel.

[0011] Furthermore, the controller is used to calculate the integral value of the sampling current within the sampling time to obtain the battery capacity; the controller is used to calculate the ratio of the battery capacity to the calibrated battery capacity, and calculate the product of the ratio and the evaluation coefficient to obtain the battery health value.

[0012] Furthermore, the display panel includes:

[0013] A mainboard, at least one charging port and a display screen are arranged on the mainboard;

[0014] A first extension plate is perpendicular to the main board and is arranged around the main board along the circumference of the main board. A first thread is arranged on the first extension plate. A second thread is arranged on the second end of the metal shell. The display panel is assembled with the metal shell by screwing the first thread and the second thread together.

[0015] A stud is arranged on one side of the mainboard close to the metal shell, the stud passes through the control circuit board, and the stud cooperates with a nut to fix the control circuit board and the display panel.

[0016] Furthermore, the mobile power supply further includes a button, which is connected to the controller and is used to input battery parameters, the battery parameters including calibrated battery capacity, evaluation coefficient, overcharge voltage and cut-off voltage;

[0017] The button is arranged on a side of the main board away from the control circuit board, or the button is arranged on a side wall of the metal shell.

[0018] Furthermore, the control circuit board is further provided with a buck-boost circuit, which is connected to at least one charging interface, a sampling resistor and a controller. The controller is used to obtain a sampling voltage through the sampling resistor, and control the buck-boost circuit to be turned on or off based on the sampling voltage, so as to control the charging and discharging voltage of the battery pack to be boosted or reduced.

[0019] Furthermore, the battery parameters further include an upper limit temperature of the battery. The control circuit board is further provided with a temperature sensor. The temperature sensor is connected to the controller for collecting the temperature of the battery pack. In response to the temperature of the battery pack being greater than or equal to the upper limit temperature of the battery, the controller controls the buck-boost circuit to be cut off.

[0020] Furthermore, the mobile power supply further includes a bottom shell, the bottom shell includes a bottom plate and a second extension plate, the second extension plate is perpendicular to the bottom plate and is arranged around the bottom plate along the circumference of the bottom plate, a third thread is arranged on the second extension plate, a fourth thread is arranged on the first end of the metal shell, and the bottom shell is assembled with the metal shell by the mutual screwing of the third thread and the fourth thread;

[0021] The first end of the negative electrode is fixedly arranged on a side of the bottom plate close to the battery pack, and the second end of the negative electrode is in contact with the negative electrode of the battery pack.

[0022] A second aspect of the present application provides a battery detection method, the battery detection method comprising:

[0023] Obtain input battery parameters and sampled current of the battery pack;

[0024] Calculate the battery capacity and battery health value of the battery pack based on the sampled current and battery parameters;

[0025] The battery capacity and battery health value are displayed on the display.

[0026] A third aspect of the present application provides an electronic device, which includes the mobile power supply as described above and a device body, wherein the device body is electrically connected to the mobile power supply and receives a charging voltage output by the mobile power supply.

[0027] Different from the prior art, the mobile power supply of the present application is a detachable structure. The first end of the metal shell can be disassembled and assembled with the negative electrode, so that the negative electrode is electrically connected to the assembled battery pack, or the negative electrode is disassembled to expose the battery pack, which is convenient for replacing abnormal battery packs; at the same time, the second end of the metal shell can be disassembled and assembled with the display panel. The mobile power supply of the present application obtains the real-time sampled current of the battery pack and the preset battery parameters through a control circuit board electrically connected to the battery pack, and further calculates the battery capacity and battery health value of the battery pack based on the sampled current and battery parameters to realize status monitoring of the battery pack. The mobile power supply of the present application further displays the battery capacity and battery health value of the battery pack through a display screen electrically connected to the control circuit board, which is convenient for disassembling the assembled negative electrode and metal shell when the battery health is abnormal, so as to realize the replacement of the battery pack.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of a mobile power supply of the present application;

[0031] Figure 2 yes Figure 1 A schematic diagram of the structure of an embodiment of a display panel;

[0032] Figure 3 yes Figure 1 A schematic diagram of the structure of an embodiment of a control circuit board;

[0033] Figure 4 This is a schematic diagram of the sampling current change of the battery pack of the present application;

[0034] Figure 5 It is a flow chart of an embodiment of a battery detection method of the present application;

[0035] Figure 6 It is a structural schematic diagram of an embodiment of the electronic device of the present application. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present application, the mobile power supply, battery detection method and electronic device provided by the present application are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It can be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0037] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0038] Since the existing mobile power supply is an integrated structure and cannot be disassembled into multiple parts, that is, the battery inside the mobile power supply cannot be replaced, and the existing mobile power supply cannot monitor the status of the battery inside the mobile power supply. Therefore, when the battery is abnormal or the battery health is poor, the mobile power supply can only be replaced, resulting in a short service life of the mobile power supply.

[0039] The present application provides a mobile power supply, which is an integrally detachable structure, and can monitor the status of the battery pack inside the mobile power supply, and display the status of the battery pack on a display screen. When the battery pack is abnormal, the battery pack can be replaced by disassembling the shell, effectively extending the service life of the mobile power supply. Figure 1 , Figure 1 Schematic diagram of the structure of an embodiment of the mobile power supply of the present application. Figure 1As shown, the mobile power supply 1 of the present application includes a metal shell 10 , a battery pack 20 , a control circuit board 30 , a display panel 40 and a bottom shell 50 .

[0040] Specifically, both ends of the metal shell 10 of this embodiment are open, the interior of the metal shell 10 is used to accommodate the battery pack 20, the second end of the metal shell 10 and the display panel 40 are detachably arranged, and the first end of the metal shell 10 and the bottom shell 50 are detachably arranged.

[0041] Optionally, the battery pack 20 of this embodiment may be composed of one or more battery packs 20 , and the multiple batteries may be in a series-parallel structure, which is not limited in the present application.

[0042] Combination Figure 1 , see further Figure 2 , Figure 2 yes Figure 1 The structure diagram of the display panel of an embodiment is shown in FIG. Figure 1 and Figure 2 As shown, the display panel 40 includes a main board 41 and a first extension board 42, and the display panel 40 is provided with at least one charging interface 43 and a display screen 44. Among them, at least one charging interface 43 is connected to the control circuit board 30, and is used to supply power to the outside according to the control signal of the control circuit board 30; the display screen 44 is connected to the control circuit board 30, and is used to display the battery capacity and the battery health value.

[0043] Specifically, at least one charging interface 43 and a display screen 44 are provided on the mainboard 41. Among them, the at least one charging interface 43 of this embodiment includes a TYPE-C interface, a TYPE-A interface, a Lightning interface, etc., and the display screen 44 of this embodiment can be specifically a liquid crystal display screen.

[0044] The first extension plate 42 of this embodiment is perpendicular to the main board 41 and is arranged around the main board 41 along the circumference of the main board 41. The first extension plate 42 is provided with a first thread, and the second end of the metal shell 10 is provided with a second thread. The display panel 40 is assembled with the second end of the metal shell 10 by the mutual screwing of the first thread and the second thread.

[0045] like Figure 1 As shown, the bottom shell 50 of this embodiment includes a bottom plate 51 and a second extension plate 52. The second extension plate 52 is perpendicular to the bottom plate 51 and is arranged around the bottom plate 51 along the circumference of the bottom plate 51. The second extension plate 52 is provided with a third thread, and the first end of the metal shell 10 is provided with a fourth thread. The bottom shell 50 is assembled with the first end of the metal shell 10 by the mutual screwing of the third thread and the fourth thread.

[0046] The mobile power supply 1 of this embodiment further includes a negative electrode 60, a first end of the negative electrode 60 is fixedly disposed on a side of the bottom plate 51 close to the battery pack 20, and a second end of the negative electrode 60 is in contact with the negative electrode of the battery pack 20. The first end of the metal shell 10 is detachably provided with the negative electrode 60 to achieve electrical connection between the negative electrode 60 and the negative electrode of the battery pack 20. Optionally, the negative electrode 60 of this embodiment is electrically connected to the control circuit board 30 through the metal shell 10.

[0047] A positive electrode 70 is disposed on the control circuit board 30 , and the control circuit board 30 is electrically connected to the positive electrode of the battery pack 20 via the positive electrode 70 , thereby connecting the charging circuit of the negative electrode 60 , the battery pack 20 and the positive electrode 70 .

[0048] like Figure 1 As shown, a stud 411 is provided on one side of the mainboard 41 close to the metal housing 10, and a screw hole is provided on the control circuit board 30. The stud 411 passes through the screw hole on the control circuit board 30, and the stud 411 cooperates with a nut to fix the control circuit board 30 and the display panel 40. At the same time, the first thread and the second thread cooperate to achieve relative fixation of the display panel 40, the control circuit board 30 and the metal housing 10.

[0049] like Figure 1 As shown, the mobile power supply 1 of this embodiment is further provided with a button 80, which is connected to the control circuit board 30 and is used to input battery parameters, including maximum charging current, battery upper limit temperature, calibrated battery capacity, evaluation coefficient, overcharge voltage and cut-off voltage, etc.

[0050] The button 80 of this embodiment is arranged on the side of the mainboard 41 away from the control circuit board 30, and is connected to the control circuit board 30 through a wire. In this embodiment, the button 80 is arranged on the mainboard 41, which is convenient for the user to input battery parameters while observing the display screen 44. In addition, the button 80 and the control circuit board 30 are in a relatively vertical state, and only enough wires need to be reserved to connect the button 80 and the control circuit board 30 to ensure the electrical connection between the button 80 and the control circuit board 30, and then the thread engagement distance between the display panel 40 and the metal shell 10 can be freely adjusted.

[0051] Optionally, in another embodiment, the button 80 of this embodiment can also be set on the side wall of the metal shell 10. In order to ensure the electrical connection between the button 80 and the control circuit board 30, it is necessary to adjust the position of the control circuit board 30 by using a nut and a stud 411.

[0052] Specifically, the control circuit board 30 of this embodiment is used to obtain the sampling current and battery parameters of the battery pack 20 to calculate the battery capacity and battery health value of the battery pack 20 based on the sampling current and battery parameters. The display screen 44 is connected to the control circuit board 30 via a screen line to receive and display the battery capacity and battery health value.

[0053] Further reading Figure 3 , Figure 3 yes Figure 1 FIG. 1 is a schematic diagram of the structure of an embodiment of a control circuit board. Figure 3 As shown, the control circuit board 30 of this embodiment includes a sampling resistor 31 , a controller 32 , a buck-boost circuit 33 and a temperature sensor 34 .

[0054] Specifically, the two ends of the sampling resistor 31 of this embodiment are respectively connected to the controller 32 and the positive electrode 70 for obtaining the sampling current of the battery pack 20. The controller 32 is respectively connected to the button 80, the display screen 44, the buck-boost circuit 33 and the temperature sensor 34.

[0055] The controller 32 of this embodiment obtains the calibrated battery capacity and the evaluation coefficient input by the user through the key 80, and obtains the sampling time of the sampling resistor 31, calculates the battery capacity based on the sampling current and the sampling time, and calculates the battery health value based on the battery capacity, the calibrated battery capacity and the evaluation coefficient. In response to the battery health value being lower than the preset threshold, the controller 32 generates a battery health abnormality signal, and the battery health abnormality signal is displayed on the display screen 44 of the display panel 40.

[0056] Further reading Figure 4 , Figure 4 It is a schematic diagram of the sampling current change of the battery pack of the present application. Figure 4 In the figure, a(V1) is the cut-off voltage, i.e., the minimum discharge voltage, b(v2) is the overcharge voltage, i.e., the maximum charge voltage, and t0-t1 is the sampling time. The controller 32 of this embodiment obtains the battery capacity by calculating the integral value of the sampling current within the sampling time. The integral calculation formula can be as follows:

[0057]

[0058] Wherein, ηi in the above formula represents the coulomb efficiency of power battery charge and discharge, and its value is determined by experiment. For lithium-ion power batteries, the discharge efficiency is usually regarded as 1, and the charging efficiency is 0.98 to 1 (within the charging current of 3C); i L (τ) is the charging and discharging current of the power battery at time τ, that is, the sampling current of this embodiment, and z(t) is the calculated battery capacity.

[0059] Furthermore, the controller 32 of this embodiment calculates the ratio of the battery capacity to the calibrated battery capacity, and calculates the product of the ratio and the evaluation coefficient to obtain the battery health value. The specific calculation formula is as follows:

[0060]

[0061] Among them, Cmax in the above formula represents the maximum available capacity of the power battery under current conditions, that is, the calibrated battery capacity of this embodiment, and SOH is the calculated battery health value.

[0062] Optionally, in this embodiment, the preset threshold may be set to 60%, 80% or any value between 60% and 80%.

[0063] Among them, the buck-boost circuit 33 of this embodiment is connected to at least one charging interface 43, a sampling resistor 31 and a controller 32. The controller 32 obtains the sampling voltage through the sampling resistor 31, and controls the buck-boost circuit 33 to be turned on or off based on the sampling voltage, so as to control the charging and discharging voltage of the battery pack 20 to be boosted or reduced. At the same time, the temperature sensor 34 of this embodiment is used to collect the temperature of the battery pack 20. In response to the temperature of the battery pack 20 being greater than or equal to the upper limit temperature of the battery, the controller 32 controls the buck-boost circuit 33 to be turned off. Therefore, the mobile power supply 1 of this embodiment can realize overvoltage, undervoltage, overcurrent, and overtemperature protection for the battery pack 20.

[0064] The mobile power supply 1 of the present application is a detachable structure. The first end of the metal shell 10 can be disassembled and assembled with the negative electrode 60, so that the negative electrode 60 is electrically connected to the assembled battery pack 20, or the negative electrode 60 is disassembled to expose the battery pack 20, which is convenient for replacing the abnormal battery pack 20; at the same time, the second end of the metal shell 10 can be disassembled and assembled with the display panel 40. The mobile power supply 1 of the present application obtains the real-time sampled current and preset battery parameters of the battery pack 20 through the control circuit board 30 electrically connected to the battery pack 20, and further calculates the battery capacity and battery health value of the battery pack 20 based on the sampled current and battery parameters, so as to realize the status monitoring of the battery pack 20. The mobile power supply 1 of the present application further displays the battery capacity and battery health value of the battery pack 20 through the display screen 44 electrically connected to the control circuit board 30, so as to facilitate the disassembly of the assembled negative electrode 60 and the metal shell 10 when the battery health is abnormal, so as to realize the replacement of the battery pack 20.

[0065] At the same time, the battery capacity algorithm of the present application can calculate the battery capacity of batteries of different brands by customizing the overcharge voltage and cut-off voltage, and the battery health value algorithm also adopts the intermediate segment calculation method. The algorithm is simple and easy to implement, and has relatively high practical performance.

[0066] The present application also provides a battery detection method, which can be applied to the mobile power supply 1 of any of the above embodiments. Figure 5 , Figure 5 1 is a flow chart of an embodiment of the battery detection method of the present application. Figure 5 Specifically, the battery detection method of the embodiment of the present disclosure may include the following steps:

[0067] Step S11: Obtain input battery parameters and sampled current of the battery pack.

[0068] Before executing step S11, it is necessary to complete the assembly of the display panel 40, the control circuit board 30, the battery pack 20, the bottom shell 50 and the metal shell 10, and complete the power supply 1. The controller 32 obtains the battery parameters input by the user through the button 80, and collects the sampled current of the battery pack 20 through the sampling resistor 31.

[0069] Step S12: Calculate the battery capacity and battery health value of the battery pack based on the sampled current and battery parameters.

[0070] The controller 32 of this embodiment calculates the integral value of the sampling current within the sampling time to obtain the battery capacity of the battery pack 20. Specifically, after the mobile power supply 1 is powered on, the battery pack 20 is in a fully charged state, and the sampling time can be the time from when the battery pack 20 is fully charged to when the discharge is terminated.

[0071] Furthermore, the controller 32 of the present embodiment calculates the ratio of the battery capacity to the calibrated battery capacity, and calculates the product of the ratio and the evaluation coefficient to obtain the battery health value of the battery pack 20 , wherein the evaluation coefficient may be the charge and discharge efficiency of the battery pack 20 .

[0072] Step S13: Display the battery capacity and battery health value on the display screen.

[0073] The controller 32 of this embodiment sends the calculated battery capacity and battery health value to the display screen 44 , and displays the battery capacity and battery health value through the display screen 44 .

[0074] Optionally, the controller 32 of this embodiment may also generate a battery health abnormality signal when determining that the battery health value is lower than a preset threshold value, and the display panel 40 displays the battery health abnormality signal to prompt the user to replace the battery pack 20 .

[0075] This application also provides an electronic device, see Figure 6 , Figure 6 Schematic diagram of the structure of an embodiment of the electronic device of the present application. Figure 6As shown, the electronic device 90 of this embodiment includes a mobile power supply 91 and a device body 92, and the device body 92 is electrically connected to the mobile power supply 91 to receive the charging voltage output by the mobile power supply 91. The mobile power supply 91 of this embodiment is the mobile power supply 1 described in any of the above embodiments, which will not be described in detail here.

[0076] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A mobile power source, characterized in that: include: A metal shell and a battery pack, wherein both ends of the metal shell are open, the interior of the metal shell is used to accommodate the battery pack, and a negative electrode is detachably provided at the first end of the metal shell, and the negative electrode is electrically connected to the negative electrode of the battery pack; A control circuit board, wherein a positive electrode is disposed on the control circuit board, the control circuit board is electrically connected to the positive electrode of the battery pack through the positive electrode, and the control circuit board is used to obtain a sampled current and a battery parameter of the battery pack, so as to calculate a battery capacity and a battery health value of the battery pack based on the sampled current and the battery parameter; A display panel, wherein the display panel and the second end of the metal shell are detachably arranged, and at least one charging interface and a display screen are arranged on the display panel. The at least one charging interface is connected to the control circuit board and is used to supply power to the outside according to the control signal of the control circuit board. The display screen is connected to the control circuit board and is used to display the battery capacity and the battery health value.

2. The mobile power source according to claim 1, characterized in that: The control circuit board is provided with a sampling resistor and a controller, the two ends of the sampling resistor are respectively connected to the controller and the positive electrode, and are used to obtain the sampling current of the battery pack, and the controller is also used to obtain the sampling time, calibrate the battery capacity and the evaluation coefficient; The controller is used to calculate the battery capacity based on the sampled current and the sampling time, and calculate the battery health value based on the battery capacity, the calibrated battery capacity and the evaluation coefficient; In response to the battery health value being lower than a preset threshold, the controller is configured to generate a battery health abnormality signal, and the battery health abnormality signal is displayed through the display panel.

3. The mobile power source according to claim 2, characterized in that: The controller is used to calculate the integral value of the sampling current within the sampling time to obtain the battery capacity; the controller is used to calculate the ratio of the battery capacity to the calibrated battery capacity, and calculate the product of the ratio and the evaluation coefficient to obtain the battery health value.

4. The mobile power source according to claim 2, characterized in that: The display panel comprises: A mainboard, wherein the at least one charging interface and the display screen are arranged on the mainboard; a first extension plate, perpendicular to the main board and arranged around the main board along the circumference of the main board, the first extension plate is provided with a first thread, the second end of the metal shell is provided with a second thread, and the display panel is assembled with the metal shell by screwing the first thread and the second thread together; A stud is arranged on one side of the mainboard close to the metal shell, the stud passes through the control circuit board, and the stud cooperates with a nut to fix the control circuit board and the display panel.

5. The mobile power source according to claim 4, characterized in that: The mobile power supply further includes a button, which is connected to the controller and is used to input the battery parameters, wherein the battery parameters include the calibrated battery capacity, the evaluation coefficient, the overcharge voltage and the cut-off voltage; Wherein, the button is arranged on a side of the main board away from the control circuit board, or the button is arranged on a side wall of the metal shell.

6. The mobile power source according to claim 5, characterized in that: The control circuit board is further provided with a buck-boost circuit, which is connected to the at least one charging interface, the sampling resistor and the controller. The controller is used to obtain a sampling voltage through the sampling resistor, and control the buck-boost circuit to be turned on or off based on the sampling voltage, so as to control the charging and discharging voltage of the battery pack to be boosted or reduced.

7. The mobile power source according to claim 6, characterized in that: The battery parameters further include an upper battery temperature limit. The control circuit board is further provided with a temperature sensor, which is connected to the controller and is used to collect the temperature of the battery pack. In response to the temperature of the battery pack being greater than or equal to the upper battery temperature limit, the controller controls the buck-boost circuit to be cut off.

8. The mobile power source according to claim 1, characterized in that: The mobile power supply further includes a bottom shell, the bottom shell includes a bottom plate and a second extension plate, the second extension plate is perpendicular to the bottom plate and is arranged around the bottom plate along the circumference of the bottom plate, the second extension plate is provided with a third thread, the first end of the metal shell is provided with a fourth thread, and the bottom shell is assembled with the metal shell by the mutual screwing of the third thread and the fourth thread; The first end of the negative electrode is fixedly arranged on a side of the bottom plate close to the battery pack, and the second end of the negative electrode is in contact with the negative electrode of the battery pack.

9. A battery detection method, characterized in that: The method comprises: Obtain input battery parameters and sampled current of the battery pack; Calculate the battery capacity and the battery health value of the battery pack based on the sampled current and the battery parameter; The battery capacity and the battery health value are displayed on a display screen.

10. An electronic device, characterized in that: The electronic device comprises a mobile power source as described in any one of claims 1 to 8 and a device body, wherein the device body is electrically connected to the mobile power source and receives a charging voltage output by the mobile power source.

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