Circuit structure, battery, electronic device and method for manufacturing battery

Abstract

The embodiment of the present application provides a circuit structure, a battery, an electronic device and a method for manufacturing a battery, wherein the circuit structure comprises: a battery, wherein the battery comprises a first positive electrode, a first negative electrode and a battery cell, wherein the battery cell is connected between the first positive electrode and the first negative electrode, and wherein the battery cell can generate a first induced magnetic field when a variable current exists; and an electromagnetic induction body, wherein the electromagnetic induction body is configured to generate a second induced magnetic field when a variable current exists, and wherein the second induced magnetic field can be superimposed on the first induced magnetic field. The second induced magnetic field can be superimposed on the first induced magnetic field, and the superimposed induced magnetic field meets the requirements of peripheral devices and the requirements of different scenarios.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a circuit structure, a battery, an electronic device, and a method for manufacturing a battery. Background Art

[0002] In electronic devices, if the battery current changes, due to the internal structure of the battery, the battery will generate an induced magnetic field due to the current change, thereby generating electromagnetic radiation. The electromagnetic radiation generated by the battery will affect the surrounding devices. Summary of the invention

[0003] The embodiments of the present application provide a circuit structure, a battery, an electronic device, and a method for manufacturing a battery, which can change the electromagnetic radiation of the battery and change the impact on peripheral devices.

[0004] The present application provides a circuit structure, which includes:

[0005] A battery, the battery comprising a first positive electrode, a first negative electrode and a battery cell, the battery cell being connected between the first positive electrode and the first negative electrode, the battery cell being capable of generating a first induced magnetic field when a variable current exists; and

[0006] The electromagnetic induction body is configured to generate a second induced magnetic field when a changing current exists, and the second induced magnetic field can be superimposed on the first induced magnetic field.

[0007] The present application also provides a battery, which includes:

[0008] First positive electrode;

[0009] First negative electrode;

[0010] A battery cell, the battery cell being connected between the first positive electrode and the first negative electrode, the battery cell being capable of generating a first induced magnetic field when a changing current exists; and

[0011] The electromagnetic induction body is configured to generate a second induced magnetic field when a changing current exists, and the second induced magnetic field can be superimposed on the first induced magnetic field.

[0012] The present application also provides an electronic device, which includes:

[0013] load; and

[0014] A circuit structure or a battery, wherein the circuit structure or the battery is connected to the load and supplies power to the load, the circuit structure is the circuit structure described above, and the battery is the battery described above.

[0015] The present application also provides a method for manufacturing a battery, wherein the battery includes a battery cell; the method includes:

[0016] Acquire a first induced magnetic field of the battery core;

[0017] A second induced magnetic field is calculated based on the first induced magnetic field, and after the second induced magnetic field is superimposed on the first induced magnetic field, the magnetic field strength of the first induced magnetic field is weakened;

[0018] acquiring parameters of the electromagnetic induction body to be installed according to the second induction magnetic field; and

[0019] The corresponding electromagnetic induction body is installed according to the parameters.

[0020] In the embodiment of the present application, the battery cell can generate a first induced magnetic field when there is a changing current, and the electromagnetic induction body is configured to generate a second induced magnetic field when there is a changing current. The second induced magnetic field can be superimposed on the first induced magnetic field, and the superimposed induced magnetic field meets the needs of peripheral devices and meets the needs of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0022] Figure 1 A first structural schematic diagram of the circuit structure provided in an embodiment of the present application.

[0023] Figure 2 A second structural schematic diagram of the circuit structure provided in an embodiment of the present application.

[0024] Figure 3 A third structural schematic diagram of the circuit structure provided in an embodiment of the present application.

[0025] Figure 4 A fourth structural schematic diagram of the circuit structure provided in an embodiment of the present application.

[0026] Figure 5 for Figure 3 or Figure 4 Schematic diagram of the structure of the battery cell shown.

[0027] Figure 6 for Figure 5 Current diagram of the cell shown.

[0028] Figure 7 for Figure 5 Another current diagram of the battery cell shown.

[0029] Figure 8 A fifth structural schematic diagram of the circuit structure provided in an embodiment of the present application.

[0030] Fig. 9A schematic diagram of the first structure of a battery assembly provided in an embodiment of the present application.

[0031] Fig.10 A second structural schematic diagram of a battery assembly provided in an embodiment of the present application.

[0032] Fig.11 A schematic diagram of the first structure of a battery provided in an embodiment of the present application.

[0033] Fig.12 A second structural schematic diagram of a battery provided in an embodiment of the present application.

[0034] Fig.13 A third structural schematic diagram of the battery provided in an embodiment of the present application.

[0035] Fig.14 A fourth structural schematic diagram of the battery provided in an embodiment of the present application.

[0036] Fig.15 This is a fifth structural schematic diagram of the battery provided in the embodiment of the present application.

[0037] Fig.16 This is a sixth structural schematic diagram of a battery provided in an embodiment of the present application.

[0038] Fig.17 for Fig.16 Schematic cross-section of the circuit board in the battery shown.

[0039] Fig.18 A schematic diagram of the structure of a circuit board in a battery provided in an embodiment of the present application.

[0040] Fig.19 This is a seventh structural schematic diagram of a battery provided in an embodiment of the present application.

[0041] Fig. 20 This is a schematic diagram of the eighth structure of the battery provided in the embodiment of the present application.

[0042] Fig.21 for Fig. 20 Exploded view of the battery shown.

[0043] Fig. 22 A first structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0044] Fig.23 A second structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0045] Fig.24 for Fig. 22 Schematic diagram of the structure of a battery in the electronic device shown.

[0046] Fig.25A third structural schematic diagram of the electronic device provided in an embodiment of the present application.

[0047] Fig.26 A schematic diagram of a process for manufacturing a battery provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0049] The present application embodiment provides a circuit structure. Figure 1 , Figure 1 The first structural diagram of the circuit structure provided in the embodiment of the present application, the circuit structure 200 includes a battery 220 and an electromagnetic induction body 240. The battery 220 includes a first positive electrode 222, a first negative electrode 224 and a battery cell 226, the battery cell 226 is connected between the first positive electrode 222 and the first negative electrode 224, and the battery cell 226 can supply power to the load through the first positive electrode 222 and the first negative electrode 224. The battery cell 226 can generate a first induced magnetic field 230 when there is a changing current.

[0050] It is understandable that the battery cell 226 can power a load, such as an acoustic-electric device, a processor, etc. Because the power of the acoustic-electric device or the processor is different at different times, that is, the acoustic-electric device or the processor is an alternating load, the current in the acoustic-electric device or the processor is changing, and the current in the battery cell 226 also changes with the current in the acoustic-electric device or the processor, so that the battery cell 226 generates a changing first induced magnetic field. The first induced magnetic field will interfere with the surrounding devices. For example, the acoustic-electric device will generate noise due to the first induced magnetic field.

[0051] The electromagnetic induction body 240 is configured to generate a second induced magnetic field 250 when there is a changing current. The second induced magnetic field 250 can be superimposed on the first induced magnetic field 230. The superimposed induced magnetic field meets the requirements of peripheral devices and meets the requirements of different scenarios.

[0052] Among them, after the second induced magnetic field 250 is superimposed on the first induced magnetic field 230, the magnetic field strength of the first induced magnetic field 230 is weakened, that is, the second induced magnetic field 250 can offset part or all of the first induced magnetic field 230. After the first induced magnetic field 230 and the second induced magnetic field 250 are superimposed, a total induced magnetic field of the circuit structure 200 is formed. The total induced magnetic field is smaller than the magnetic field strength of the first induced magnetic field 230, thereby reducing the impact on surrounding devices. There is no need to set up a complex anti-magnetic field interference structure around the battery 220, which reduces costs. By adding the electromagnetic induction body 240, the magnetic field radiation of the battery cell 226 can be effectively and significantly offset. The design is ingenious and effective, and the improvement effect on magnetic field interference is stable and reliable.

[0053] For example, when the peripheral device is an electroacoustic device, the electroacoustic device is disturbed by the first induced magnetic field and generates noise. After the second induced magnetic field is superimposed on the first induced magnetic field, the electroacoustic device is affected by the total induced magnetic field, that is, affected by the superimposed second induced magnetic field and the first induced magnetic field, and no noise is generated or the noise generated is very small.

[0054] It is understandable that the magnetic field direction and magnetic field strength of the second induced magnetic field 250 of the electromagnetic induction body 240 are unlikely to be completely the same as those of the first induced magnetic field 230. In order to reduce the impact on some peripheral devices, the electromagnetic induction body 240 can be reasonably arranged to weaken the magnetic field strength of the first induced magnetic field 230 at the location of the peripheral devices. Figure 2 , Figure 2 In the second structural schematic diagram of the circuit structure provided in the embodiment of the present application, the electromagnetic induction body 240 can be set at the first position 320 in the first induced magnetic field 230, so that after the second induced magnetic field 250 is superimposed on the first induced magnetic field 230, the magnetic field strength at the second position 340 in the first induced magnetic field 230 is weakened.

[0055] The electromagnetic induction body 240 may be first set at the first position 320, and then the second position 340 where the first induced magnetic field 230 is weakened by the second induced magnetic field 250 is calculated, and the peripheral devices are set at the second position 340. The magnetic field strength at the location of the peripheral devices at the second position 340 is small, that is, the magnetic field strength of the peripheral devices is small, which reduces the interference of the peripheral devices. The peripheral devices may also be set at the second position 340, and then the magnetic field strength at the second position 340 of the first induced magnetic field 230 needs to be weakened, and the required second induced magnetic field 250 is calculated, and then a suitable electromagnetic induction body 240 is selected and placed at a suitable position to achieve the above requirements.

[0056] It can be understood that if the peripheral devices may require a larger magnetic field strength, the magnetic field strength of the first induced magnetic field is enhanced after the second induced magnetic field is superimposed on the first induced magnetic field. It can also be understood that the first induced magnetic field and the second induced magnetic field are superimposed to form a total induced magnetic field of the circuit structure, and the total induced magnetic field is greater than the magnetic field strength of the first induced magnetic field, thereby enhancing the impact on the peripheral devices.

[0057] For example, when the peripheral device is a preset magnetic induction device, the preset magnetic induction device can receive the first induced magnetic field and convert it into electrical energy. After the second induced magnetic field is superimposed on the first induced magnetic field, the preset magnetic induction device is affected by the total induced magnetic field, that is, affected by the superimposed second induced magnetic field and the first induced magnetic field, and can convert more electrical energy.

[0058] See also Figure 3 and Figure 4 , Figure 3 A third structural diagram of the circuit structure provided in the embodiment of the present application, Figure 4 A fourth structural diagram of the circuit structure provided in an embodiment of the present application. The battery 220 can supply power to the load 40. The electromagnetic induction body can be a coil 242, and the coil 242 is connected to the first positive electrode 222 or the first negative electrode 224. The coil 242 is directly electrically connected to the battery cell 226, and the current in the coil 242 can be equal to the current in the battery cell 226, so that the second induced magnetic field 250 generated by the coil 242 can follow the first induced magnetic field 230 generated by the battery cell 226. It can be understood that the electromagnetic induction body can also be other devices that can generate an induced magnetic field.

[0059] It is understandable that the structure of the coil can be determined according to the first induced magnetic field of the battery core. For example, the number of turns of the coil, the diameter of the coil, the thickness of the coil, the material of the coil, etc. can be determined comprehensively according to the first induced magnetic field, so that the second induced magnetic field of the coil can offset as much of the first induced magnetic field as possible.

[0060] The current direction of the battery cell is opposite to that of the coil. The magnetic field directions generated by opposite currents are also opposite, so the direction of the second induced magnetic field generated by the coil is opposite to that of the first induced magnetic field, that is, the second induced magnetic field 250 and the first induced magnetic field 230 can cancel each other out, thereby reducing or eliminating the total induced magnetic field of the battery and reducing the interference of the total induced magnetic field of the battery on peripheral devices.

[0061] It is understandable that the electromagnetic magnetic field generated by the current is strong or weak, and its magnetic field strength is related to the magnitude of the current. Under certain conditions, the greater the current, the greater the induced magnetic field of the current. The induced magnetic field of the current has a direction, and the direction of the induced magnetic field can be determined by Ampere's law, that is, hold the wire (conductor or current) with your right hand so that the direction of the thumb is the direction of the current (the current goes from the positive pole to the negative pole, and the thumb points to the negative pole). At this time, the direction of the four fingers surrounding is the direction of the magnetic field.

[0062] Magnetic field formula:

[0063] Where B is the magnitude of the magnetic field at a specific point, is a constant. The size of the constant depends on the properties of the material. Different materials have different constants. For example, The size is 4π×10 -7 , I is the current of the conductor, and r is the distance from the conductor to a specific point. It can be seen that the currents of the core and the coil are equal and opposite, and the magnetic fields generated by the core and the coil are opposite. Selecting a suitable coil structure and coil position can make the second induced magnetic field reduce or eliminate the first induced magnetic field, or make the second induced magnetic field completely offset the first induced magnetic field at a specific position.

[0064] It is understandable that the coil can be formed by a first trace etched on a circuit board. Exemplarily, the circuit board has a trace formed by etching, and the trace can form a corresponding circuit trace and electrically connect various electrical components. For example, the coil is formed by a copper wire etched on the circuit board, and the coil formed by the copper wire of the circuit board is small in size. It should be noted that the circuit board can be used only to set the coil. For example, a circuit board specifically set up with a coil. Other functional devices can also be set up on the circuit board. For example, a circuit board with a functional device is used to add a coil. That is, the existing circuit board is reused and the coil is etched on the existing circuit board. A pad can also be set on the circuit board, and the pad can conveniently connect the coil to an electrical device, or electrically connect the coil to an external device. The coil can also be set on the circuit board in other ways, such as the coil is an independent component and then welded on the circuit board. In some other embodiments, the coil may not be set on the circuit board, and the coil can be formed separately, and then connected to the battery core through a corresponding wire. For example, the coil is an independent coil, which is independently set on one side of the battery core through the rigidity of the coil itself.

[0065] Please combine Figure 5 and Figure 6 , Figure 5 for Figure 3 or Figure 4 The schematic diagram of the structure of the battery cell shown in FIG. Figure 6 for Figure 5Schematic diagram of the current of the battery cell shown. The battery cell 226 includes a main housing 223, a positive electrode diaphragm 225 and a negative electrode diaphragm 227, the positive electrode diaphragm 225 and the negative electrode diaphragm 227 are wound and arranged in the main housing 223, the positive electrode diaphragm 225 is electrically connected to the first positive electrode 222, and the negative electrode diaphragm 227 is electrically connected to the first negative electrode 224. For example, the battery cell 226, i.e., the positive electrode diaphragm 225 and the negative electrode diaphragm 227, can generate a counterclockwise current, and the coil 242 generates a clockwise current. Of course, in some other embodiments, the battery cell 226, i.e., the positive electrode diaphragm 225 and the negative electrode diaphragm 227, can generate a clockwise current, and the coil 242 generates a counterclockwise current.

[0066] Please combine Figure 7 , Figure 7 for Figure 5 Another current diagram of the battery cell shown. The battery cell 226 may also have currents in two directions, such as the positive electrode diaphragm 225 and the negative electrode diaphragm 227 generating currents in different directions. The electromagnetic magnetic fields generated by the currents in the two directions are opposite, which can effectively reduce the equivalent induced magnetic field of the battery cell 226. However, due to the internal structure of the battery cell 226, there will still be an equivalent induced magnetic field. The equivalent induced magnetic field finally generated by the battery cell 226 is the first induced magnetic field 230.

[0067] See also Figure 8 , Figure 8 A fifth structural diagram of the circuit structure provided in the embodiment of the present application. The circuit structure 200 may further include a current detector 260, which is connected to the electromagnetic induction body 240. The current detector 260 detects a first current in the battery cell 226 and adjusts a second current in the electromagnetic induction body 240 according to the first current, wherein the battery cell 226 generates a first induced magnetic field 230 according to the first current, and the electromagnetic induction body 240 generates a second induced magnetic field 250 according to the second current.

[0068] The electromagnetic induction body 240 may not be directly connected to the battery 220, and the current in the electromagnetic induction body 240 may be equal to or unequal to the current in the battery cell 226. Specifically, the current detector 260 detects and obtains the first current of the battery cell 226, and then calculates the second current required by the electromagnetic induction body 240 according to the first current, and then adjusts the second current in the electromagnetic induction body 240 accordingly. It can be understood that the battery cell 226 generates the first induced magnetic field 230 in the above embodiment according to the first current, and the electromagnetic induction body 240 generates the second induced magnetic field 250 in the above embodiment according to the second current. The second induced magnetic field 250 can be superimposed on the first induced magnetic field 230 to weaken the magnetic field strength of the first induced magnetic field 230. Among them, the adjustment of the second current in the electromagnetic induction body 240 can be achieved by a current generator or a variable resistor electrically connected to the electromagnetic induction body 240. Other structures can also be used to adjust the second current in the electromagnetic induction body 240 as needed. This embodiment does not limit the structure for adjusting the second current in the electromagnetic induction body 240.

[0069] The present application also provides a battery assembly. Fig. 9 and Fig.10 , Fig. 9 A schematic diagram of the first structure of a battery assembly provided in an embodiment of the present application, Fig.10 A second structural diagram of a battery assembly provided in an embodiment of the present application. The battery assembly 20 includes a circuit structure 200, and the structure of the circuit structure 200 can adopt the structure of the circuit structure in any of the above embodiments, which will not be described in detail here.

[0070] Among them, when the electromagnetic inductor 240 is a coil 242; one end of the coil 242 is connected to the first positive electrode 222 and the other end serves as the third positive electrode 262 of the battery 220 assembly, or one end of the coil 242 is connected to the first negative electrode 224 and the other end serves as the third negative electrode 264 of the battery 220 assembly.

[0071] It is understandable that the electromagnetic induction body can be packaged with the battery as a whole into an integral structure. For example, the electromagnetic induction body and the battery are packaged in a shell. The electromagnetic induction body and the battery can also be an assembled structure. Specifically, the electromagnetic induction body is set outside the battery and assembled through other structures. For example, the electromagnetic induction body is set on one side of the battery and fixed on other structures. The embodiment of the present application also provides a battery, please refer to Fig.11 , Fig.11A schematic diagram of the first structure of a battery provided in an embodiment of the present application. The battery 220 includes a first positive electrode 222, a first negative electrode 224, a battery cell 226, and an electromagnetic induction body 240. The battery cell 226 is connected between the first positive electrode 222 and the first negative electrode 224, and the battery cell 226 can supply power to a load through the first positive electrode 222 and the first negative electrode 224. The battery cell 226 can generate a first induced magnetic field 230 when there is a changing current.

[0072] It is understandable that the battery cell 226 can power a load, such as an acoustic-electric device, a processor, etc. Because the power of the acoustic-electric device or the processor is different at different times, that is, the acoustic-electric device or the processor is an alternating load, the current in the acoustic-electric device or the processor is changing, and the current in the battery cell 226 also changes with the current in the acoustic-electric device or the processor, so that the battery cell 226 generates a changing first induced magnetic field. The first induced magnetic field will interfere with the surrounding devices. For example, the acoustic-electric device will generate noise due to the first induced magnetic field.

[0073] The electromagnetic induction body 240 is configured to generate a second induced magnetic field 250 when there is a changing current. The second induced magnetic field 250 can be superimposed on the first induced magnetic field 230. The superimposed induced magnetic field meets the requirements of peripheral devices and meets the requirements of different scenarios.

[0074] Please combine Fig.12 , Fig.12 The second structural diagram of the battery provided in the embodiment of the present application. The battery 220 also includes a shell, and the battery cell 226 and the electromagnetic induction body 240 are encapsulated in the shell. The battery cell 226 and the electromagnetic induction body 240 are encapsulated in a shell to form an integral battery 220.

[0075] An electromagnetic shielding layer may be provided on the inner surface and / or the outer surface of the shell. After the second induced magnetic field 250 is superimposed and weakened by the first induced magnetic field 230, the superimposed induced magnetic field is weakened again to reduce the influence of the battery 220 on the surrounding devices.

[0076] See also Fig.13 and Fig.14 , Fig.13 This is a third structural schematic diagram of a battery provided in an embodiment of the present application, Fig.14 A fourth structural schematic diagram of a battery provided in an embodiment of the present application, wherein the battery cell 226 includes a second positive electrode 2262 and a second negative electrode 2264, and the electromagnetic induction body 240 is a coil 242, one end of the coil 242 is connected to the second positive electrode 2262, and the other end is connected to the first positive electrode 222; or one end of the coil 242 is connected to the second negative electrode 2264, and the other end is connected to the first negative electrode 224.

[0077] The battery core is a wound battery core, and the coil 242 can be arranged at one end of the battery core 226 and parallel to the end face of the battery core 226. By making the coil 242 parallel to the end face corresponding to the battery core 226, the coil 242 can be better arranged and the space occupied by the coil 242 can be reduced. Exemplarily, the battery core can be cylindrical, the battery core can include a flat top surface, and the coil can be arranged on the top surface and parallel to the top surface of the battery core. The battery core can include an arc-shaped side, the coil can be arranged on the side, and the coil is also arc-shaped and parallel to the side of the battery core. In some other embodiments, the coil 242 may not be parallel to the main body, that is, the coil 242 is arranged at an angle relative to the main body. If the second induced magnetic field generated by the coil 242 is parallel to the first induced magnetic field generated by the main body, the coil 242 will take up more space. It is not necessary to set a complex anti-magnetic field interference structure around the battery 220, which reduces costs. By adding the coil 242 , the magnetic field radiation of the battery cell 226 can be effectively and significantly offset. The design is ingenious and effective, the effect of improving the magnetic field interference is stable and reliable, and the impact on the size of the battery 220 is very small.

[0078] The battery 220 further includes an insulating layer, which is disposed between the battery core 226 and the coil 242. The coil 242 can be adjacent to the main body through the insulating layer, thereby ensuring that the coil 242 is insulated from the battery core 226 and generating opposite magnetic fields to offset each other. It is understandable that the thickness of the insulating layer can be adjusted as needed so that the second induced magnetic field 250 can better offset the first induced magnetic field 230.

[0079] See also Fig.15 , Fig.15 The fifth structural diagram of the battery provided in the embodiment of the present application is as follows: The battery 220 further includes a protective member 229 , in which the electromagnetic induction body 240 is disposed, and the protective member 229 is adjacent to the battery cell 226 .

[0080] The electromagnetic induction body 240 is disposed in the protective member 229. The protective member 229 can protect the electromagnetic induction body 240. The protective member 229 can be a box body or other structures. For example, the protective member 229 is formed by curing a colloid. The electromagnetic induction body 240 is first embedded in the colloid, and the protective member 229 is formed after the colloid is cured. The protective member 229 can be an insulating material. The protective member 229 can be an insulating box body, or can be formed by curing an insulating glue.

[0081] Please continue reading Figure 2It is understandable that the magnetic field direction and magnetic field strength of the second induced magnetic field 250 of the electromagnetic induction body 240 are hardly completely the same as those of the first induced magnetic field 230. In order to reduce the impact on some peripheral devices, the electromagnetic induction body 240 can be reasonably arranged to weaken the magnetic field strength of the first induced magnetic field 230 at the position of the peripheral devices. Specifically, the electromagnetic induction body 240 can be arranged at the first position 320 in the first induced magnetic field 230, so that after the second induced magnetic field 250 is superimposed on the first induced magnetic field 230, the magnetic field strength at the second position 340 in the first induced magnetic field 230 is weakened.

[0082] The electromagnetic induction body 240 can be first set at the first position 320, and then the second position 340 where the first induced magnetic field 230 is weakened by the second induced magnetic field 250 is calculated, and the peripheral devices are set at the second position 340. The magnetic field strength at the location of the peripheral devices at the second position 340 is relatively small, that is, the magnetic field strength disturbed by the peripheral devices is small, thereby reducing the interference of the peripheral devices.

[0083] The peripheral devices may be first arranged at the second position 340 , and then the magnetic field strength of the first induction magnetic field 230 at the second position 340 needs to be weakened, the required second induction magnetic field 250 is calculated, and then a suitable electromagnetic induction body 240 is selected and placed at a suitable position to achieve the above requirement.

[0084] It can be understood that if the peripheral devices may require a larger magnetic field strength, the magnetic field strength of the first induced magnetic field is enhanced after the second induced magnetic field is superimposed on the first induced magnetic field. It can also be understood that the first induced magnetic field and the second induced magnetic field are superimposed to form a total induced magnetic field of the circuit structure, and the total induced magnetic field is greater than the magnetic field strength of the first induced magnetic field, thereby enhancing the impact on the peripheral devices.

[0085] For example, when the peripheral device is a preset magnetic induction device, the preset magnetic induction device can receive the first induced magnetic field and convert it into electrical energy. After the second induced magnetic field is superimposed on the first induced magnetic field, the preset magnetic induction device is affected by the total induced magnetic field, that is, affected by the superimposed second induced magnetic field and the first induced magnetic field, and can convert more electrical energy.

[0086] See also Fig.16 , Fig.16 The sixth structural diagram of the battery provided in the embodiment of the present application. The battery 220 may also include a circuit board 210, and the electromagnetic induction body 240 is arranged on the circuit board 210. The circuit board 210 can serve as a carrier of the electromagnetic induction body 240, which is convenient for setting the electromagnetic induction body 240. It can be understood that the electromagnetic induction body may not be arranged on the carrier, but may be independently arranged according to the characteristics of its own material. It should be noted that the circuit board in the figure can be arranged at a distance from the battery cell 226, or it can be arranged adjacent to it.

[0087] Please combine Fig.17 , Fig.17 for Fig.16 The schematic cross-sectional view of the circuit board in the battery shown. The circuit board 210 includes a first side surface 213 and a second side surface 215 that are arranged opposite to each other, an electromagnetic induction body 240 is arranged on the first side surface 213, and a functional element 218 is arranged on the second side surface. It can be understood that the electromagnetic induction body 240 can be reused on the circuit board 210 where the functional element 218 is arranged. The battery 220 can supply power to the functional element 218 on the circuit board 210, such as a processor. The electromagnetic induction body 240 is arranged on the first side surface 213 opposite to the functional element 218, which does not affect the arrangement of the functional element 218, fully utilizes the first side surface 213, has very little impact on the circuit board 210, and can conveniently reuse the circuit board 210.

[0088] It can be understood that the first side 213 can be the bottom surface of the circuit board 210, and the second side 215 can be the top surface of the circuit board 210. The functional element 218 can be mounted or welded on the top surface, and the bottom surface is generally not provided with or provided with fewer functional elements. The bottom surface has a large blank area, so that the bottom surface has the conditions for setting an electromagnetic induction body, and the electromagnetic induction body can be conveniently set on the bottom surface. Among them, the functional element 218 can include functional elements such as springs or pole ears, and can also include functional elements such as processors and memories. Circuit boards with electromagnetic induction bodies and functional elements can be mass-produced and controlled, and have good consistency.

[0089] The electromagnetic induction body can be arranged on the side of the circuit board 210 facing the battery cell 226, and the electromagnetic induction body is closer to the battery cell 226, so that the second induced magnetic field 250 generated by the electromagnetic induction body can better reduce or offset the first induced magnetic field 230. The electromagnetic induction body can also be arranged on the side of the circuit board away from the battery cell 226 as needed, and the side of the circuit board facing the battery cell 226 is not provided with the electromagnetic induction body, and no components are set or very few components are set, so that the circuit board can be conveniently attached to the battery cell 226.

[0090] The electromagnetic induction body can be a coil. Among them, the coil arranged on the circuit board can be an independent component, that is, the coil is manufactured first, and then the coil is installed on the circuit board. The circuit board is a carrier of the coil, which is convenient for installing and setting the coil. Moreover, the coil can be connected to the negative electrode of the battery cell through the pad on the circuit board, and can be used as the negative electrode of the battery through the pad on the circuit board or other devices. It can be understood that the coil can also be connected to the positive electrode of the battery cell through the pad on the circuit board, and can be used as the positive electrode of the battery through the pad on the circuit board or other devices.

[0091] The coil can also be formed in other ways. For example, see Fig.18 , Fig.18A schematic diagram of the structure of a circuit board in a battery provided in an embodiment of the present application. The circuit board 210 has a first trace 246 formed by etching, and the first trace 246 forms a coil 242. Therefore, when manufacturing the circuit board 210, the coil 242 can be directly etched on the circuit board 210 without increasing the thickness of the circuit board 210. For example, a coil 242 formed by a copper wire is etched on the circuit board 210, and the coil 242 formed by the copper wire of the circuit board 210 is small in size. It should be noted that the circuit board 210 can be used only to set the coil 242. For example, a circuit board 210 with a coil 242 is added. Other functional devices can also be set on the circuit board 210. For example, a coil 242 is added using the circuit board 210 with a functional device.

[0092] The line width of the first routing line 246 forming the coil body 244, the number of turns of the coil 242, the distance between the coil 242 and the battery core 226, the diameter of the coil 242, etc. can be set as needed. It can be understood that when the number of turns of the coil 242 is large, the magnetic field strength of the second induced magnetic field 250 can be increased, but the area of ​​the second induced magnetic field 250 will be reduced. The first routing line 246 can be set at the edge of the circuit board 210 to ensure that the area of ​​the generated second induced magnetic field 250 is not too small. After determining the setting of the first routing line 246, the number of turns of the coil 242 is determined, so that the second induced magnetic field 250 can better reduce the first induced magnetic field 230. In other examples, the first routing line forming the coil can also be set in the middle of the circuit board.

[0093] The circuit board can be stacked on the surface of the battery cell. Exemplarily, the circuit board can be adjacent to the battery cell, and it can also be understood that the circuit board can be covered on the surface of the battery cell, and the circuit board is directly stacked on the surface of the battery cell. Among them, a first solder pad can be provided on the circuit board, and the first solder pad is connected to one end of the coil, and the first solder pad abuts the negative pole of the battery cell. The coil is connected to the negative pole of the battery cell through the first solder pad, and does not need to be connected through other connectors such as wires. The distance between the coil and the battery cell is minimized, and the volume of the battery is minimized. Among them, the circuit board can be glued to the battery cell, such as by double-sided tape or other adhesive layers. The circuit board can also be installed on the battery cell in other ways, such as welding, screwing, etc.

[0094] See also Fig.19 , Fig.19 The seventh structural schematic diagram of the battery provided in the embodiment of the present application. The circuit board 210 is provided with a first connection terminal 2492 and a second connection terminal 2494 on the side away from the battery cell 226. The first connection terminal 2492 is connected to the second negative electrode 2264 through the coil 242 and serves as the negative electrode of the battery 220. The second connection terminal 2494 is connected to the second positive electrode 2262 and serves as the positive electrode of the battery 220.

[0095] The circuit board 210 can be covered on the surface of the battery cell 226. The first connection terminal 2492 and the second connection terminal 2494 on the circuit board 210 serve as the positive and negative electrodes of the battery 220. The first connection terminal 2492 and the second connection terminal 2494 are connected to a load and supply power to the load. The positions of the first connection terminal 2492 and the second connection terminal 2494 on the circuit board 210 can be set as needed, such as the first connection terminal 2492 and the second connection terminal 2494 are set at both ends of the circuit board 210, or the first connection terminal 2492 and the second connection terminal 2494 are adjacently set at one end or in the middle of the circuit board 210.

[0096] The first connection end 2492 and the second connection end 2494 can be configured as a conductive structure such as a metal sheet, a pad or a spring as needed. The metal sheet can be a nickel sheet, a copper sheet or a metal sheet of other materials. It is understandable that in order to better connect the battery to an external device, a connector can be provided on the first connection end and / or the second connection end to facilitate connection with the external device.

[0097] It can be understood that the second positive electrode 2262 and the second negative electrode 2264 of the battery cell 226 can be arranged on one side of the battery cell 226, and then connected to the first connection terminal 2492 and the second connection terminal 2494 through the pad or the spring on the circuit board 210. The second positive electrode and the second negative electrode of the battery cell 226 can also be arranged on different sides of the battery cell 226, and then the second positive electrode and / or the second negative electrode are connected to the first connection terminal 2492 and the second connection terminal 2494 through a wire or other connection structure.

[0098] See also Fig. 20 and Fig.21 , Fig. 20 A fifth structural schematic diagram of a battery provided in an embodiment of the present application, Fig.21 for Fig. 20 The battery cell 226 may include a first end 228, and the second positive electrode 2262 and the second negative electrode 2264 are both disposed at the first end 228. The circuit board 210 is adjacent to the first end 228, and the circuit board 210 is provided with an opening, and the opening exposes the second positive electrode 2262, and the second positive electrode 2262 serves as the positive electrode of the battery 220. The circuit board 210 is provided with a first connecting terminal 2492 on the side away from the battery cell 226, and the first connecting terminal 2492 is connected to the second negative electrode 2264 of the battery cell 226 through the coil 242.

[0099] The first end 228 of the battery cell 226 may include a raised bump 2282 and a peripheral portion 2284 surrounding the bump 2282, the opening exposes the bump 2282, the second positive electrode is disposed on the bump 2282, and the second negative electrode is disposed on the peripheral portion 2284. The circuit board 210 may be an annular plate, exposing the bump 2282 in the middle of the battery cell 226 and covering the peripheral portion 2284 around the bump 2282, without affecting the shape of the battery cell 226 or the connection between the battery 220 and other devices.

[0100] It should be noted that the circuit board 210 can cover the second negative electrode 2264, one end of the coil on the circuit board 210 can be connected to the second negative electrode 2264, and the first connection end 2492 provided at the end away from the battery cell 226 is used as the negative electrode of the battery, and the first connection end 2492 is connected to the other end of the coil. The first connection end can be connected to the other end of the coil through a via on the circuit board.

[0101] Among them, the battery 220 may also include a first lead-out structure and a second lead-out structure, the first lead-out structure is connected to the second negative electrode through the coil, and the second lead-out structure is connected to the second positive electrode. The battery can be conveniently connected to an external device through the first lead-out structure and the second lead-out structure, thereby supplying power to the external device. It can be understood that the second lead-out structure can be selected and set as needed. For example, in some embodiments, the second lead-out structure may not be set, and the external device is directly powered by the second positive electrode on the bump in conjunction with the first lead-out structure.

[0102] It is understandable that the circuit board can also be in other shapes, as long as an opening is provided on the circuit board to expose the second positive electrode, such as an opening provided on the side or corner of the circuit board.

[0103] The battery cell may include a first end face and a second end face, the first end face and the second end face are arranged opposite to or adjacent to each other, the second negative electrode is arranged on the first end face, and the second positive electrode is arranged on the second end face. The circuit board is adjacent to the first end face, and the coil is connected to the second negative electrode. The circuit board is arranged on the first end face, and the coil on the circuit board is connected to the second negative electrode, which does not affect the second end face and the second positive electrode of the battery. When the battery is connected to an external device, the second negative electrode of the battery cell is connected to the external device through the coil of the circuit board, and the second positive electrode of the battery cell is not affected and can be directly connected to the external device. Among them, the first end face and the second end face can be two opposite end faces of the battery cell. For example, the first end face and the second end face are the top end face and the bottom end face of the battery cell. Alternatively, the first end face and the second end face can also be two adjacent end faces of the battery cell. The first end face and the second end face can also be the top end face and the side end face of the battery cell.

[0104] The battery cell in this embodiment can be used as a battery alone, or can be packaged together with a circuit board with a coil to be used as a battery.

[0105] It is understandable that the thickness of the circuit board in the above embodiment is relatively small. For example, the circuit board can be a rigid circuit board, and the thickness of the rigid circuit board can be equal to or less than 0.4 mm. The circuit board can be a flexible circuit board, and the thickness of the flexible circuit board can be equal to or less than 0.1 mm.

[0106] This embodiment also provides an electronic device. Fig. 22 , Fig. 22 The first structural diagram of the electronic device provided in the embodiment of the present application. The electronic device 10 includes a load 40 and a battery 220, the battery 220 is connected to the load 40 and supplies power to the load 40, and the structure of the battery 220 can adopt the structure of the battery 220 in any of the above embodiments, which will not be repeated here.

[0107] See also Fig.23 , Fig.23 A second structural diagram of an electronic device provided in an embodiment of the present application. The load 40 may be an electromagnetic device. When the electromagnetic induction body 240 is disposed at the first position 320 in the first induced magnetic field 230 of the battery cell 226, the electromagnetic device is disposed at the second position 340 in the first induced magnetic field 230, so that after the second induced magnetic field 250 is superimposed on the first induced magnetic field 230, the magnetic field strength at the second position 340 in the first induced magnetic field 230 is weakened. The electromagnetic device may be an electromagnetic sensitive device, such as an electroacoustic device or an antenna.

[0108] It should be noted that the relative positions of the battery cell 226 and the electromagnetic induction body 240 in the figure are only schematic diagrams, and the relative positions between the battery cell 226 and the electromagnetic induction body 240 can be adjusted as needed. For example, the battery cell and the electromagnetic induction body are separated by a distance, or the battery cell and the electromagnetic induction body are arranged adjacent to each other, or the electromagnetic induction body is arranged between the battery cell and the load, or the electromagnetic induction body is arranged on the side of the battery cell away from the load.

[0109] Among them, the electroacoustic device can be a microphone, a speaker and other devices.

[0110] The electronic device may be an audio playback device such as headphones and speakers. The headphones include components such as batteries and electroacoustic devices. Considering the small size of the headphones and the close distance between the battery and the electroacoustic device, the magnetic field of the battery can easily affect the electroacoustic device, causing interference to the electroacoustic device and generating noise. Adding a coil to the battery can effectively reduce the magnetic field of the battery, thereby improving the interference of the electroacoustic device and reducing or eliminating the noise caused by the battery magnetic field to the electroacoustic device. Similarly, miniaturized speakers have similar problems. The battery of the miniaturized speaker can also add a coil to effectively reduce the magnetic field of the battery, thereby improving the interference of the electroacoustic device.

[0111] The electronic device may further include a device housing, in which the electroacoustic device and the battery are both disposed. In order to miniaturize the electroacoustic device, the device housing is smaller in size, and the electroacoustic device and the battery are closer. If the magnetic field of the battery is larger, the electroacoustic device is easily disturbed by the magnetic field and generates noise. The battery in this embodiment effectively offsets the induced magnetic field of the battery through an electromagnetic induction body such as a coil, which has less impact on the electroacoustic device, and can improve or remove the noise generated by the electroacoustic device due to the induced magnetic field of the battery.

[0112] The earphones in this embodiment can be earphones with built-in batteries, such as Bluetooth earphones, and the speakers can be speakers with built-in batteries, such as Bluetooth speakers. It can be understood that the electronic device can also include a wireless communication module to achieve wireless communication, and the wireless communication module can obtain external information to control the electro-acoustic device, such as controlling the electronic device to play audio, or controlling the electronic device to switch songs, etc.

[0113] See also Fig.24 , Fig.24 for Fig. 22 Schematic diagram of the structure of the battery in the electronic device shown. In some embodiments, the coil 242 can be provided with multiple connection points for connecting to the positive or negative pole of the battery cell 226, or multiple connection points for connecting to the load 40. Each connection point can be controlled by the switch 140 to realize the connection or disconnection between the connection point and the positive or negative pole of the battery cell 226 and the load 40. The second induced magnetic field generated by connecting the positive or negative pole of the battery cell 226 with different connection points has different magnitudes. Combined with the magnetic field formula Different connection points can be understood as being able to change the r value, thereby changing the second induced magnetic field generated by the coil 242.

[0114] Different connection points are connected to the load to make the coil generate different second induced magnetic fields. After the different second induced magnetic fields are superimposed on the first induced magnetic field, the magnetic field strength at different positions of the first induced magnetic field is weakened, that is, suitable connection points can be selected for external devices at different positions. For example, adjacent batteries in an electronic device have a first external device and a second external device, and the first external device and the second external device are arranged at different positions. When the first external device is working, the first connection point of the coil is connected to the load, so that the second induced magnetic field generated by the coil at the first external device completely offsets or reduces the first induced magnetic field generated by the battery cell, thereby improving the electromagnetic radiation interference of the first external device. When the second external device is working, the second connection point of the coil is connected to the load, so that the second induced magnetic field generated by the coil at the second external device completely offsets or reduces the first induced magnetic field generated by the battery cell, thereby improving the electromagnetic radiation interference of the second external device.

[0115] For another example, the preset position where the second induced magnetic field offsets the first induced magnetic field can be changed by adjusting the connection point. Different connection points correspond to different preset positions. At the preset position, the second induced magnetic field can significantly weaken the magnetic field strength of the first induced magnetic field. For electronic devices of different shapes, the preset position can be changed by adjusting the connection point. The preset position can be used to set electromagnetic sensitive devices such as speakers and microphones. Due to shape limitations, different electronic devices have different locations for setting batteries and electromagnetic sensitive devices. By selecting different connection points, electronic devices of different shapes can be adapted, or the setting position of electromagnetic sensitive devices can be changed in the same electronic device, which facilitates the position setting and adjustment of different devices in the electronic device.

[0116] In addition, the second induced magnetic field generated by the coil at the preset position can offset the first induced magnetic field generated by the battery cell. However, considering the different aging degrees of the battery cell and the coil, different connection points can be selected according to the usage time. Therefore, even after the battery cell has been used for a long time, the magnetic field strength at the preset position can still be made very small, and the gap between the first induced magnetic field and the second induced magnetic field at the preset position will not gradually increase due to the different aging degrees of the battery cell and the coil.

[0117] The coil may include multiple sub-circles, each of which is a circle, and the connection points may be set on different sub-circles. Each connection point is connected through a control line, and the control line is connected to a switch, and the switch is spaced apart from the coil, and the switch will not affect the coil. For example, the switch is set on a circuit board where the load is located. For another example, a circuit board is set apart from the battery cell and the coil, a switch group is set on the circuit board, the switch group is connected to the control line, and one of the control lines is selected to be connected to the coil, thereby changing the number of sub-circles of the coil. The switch can be a single-pole single-throw, a single-pole multiple-throw, etc., or a field effect tube, etc.

[0118] It can be understood that the circuit structure, battery or coil in the battery assembly in any of the above embodiments can adopt the structure in which the coil in this embodiment includes multiple connection points, which will not be described in detail here.

[0119] This embodiment also provides an electronic device. Fig.25 , Fig.25 The third structural diagram of the electronic device provided in the embodiment of the present application. The electronic device 10 includes a load 40 and a circuit structure, the circuit structure is connected to the load 40 and supplies power to the load 40, and the structure of the circuit structure can adopt the structure of the circuit structure in any of the above embodiments, which will not be repeated here.

[0120] The load 40 is an electromagnetic device such as an electroacoustic device or an antenna. When the electromagnetic induction body 240 is set at the first position 320 in the first induced magnetic field 230 of the battery 220, the electromagnetic device is set at the second position 340 in the first induced magnetic field 230, so that after the second induced magnetic field 250 is superimposed on the first induced magnetic field 230, the magnetic field strength at the second position 340 in the first induced magnetic field 230 is weakened.

[0121] It should be noted that the relative position of the battery 220 and the electromagnetic induction body 240 in the figure is only a schematic diagram, and the relative position between the battery 220 and the electromagnetic induction body 240 can be adjusted as needed. For example, the battery and the electromagnetic induction body are separated by a distance, or the battery and the electromagnetic induction body are arranged adjacent to each other, or the electromagnetic induction body is arranged between the battery and the load, or the electromagnetic induction body is arranged on the side of the battery away from the load.

[0122] The coil in this embodiment can be provided with multiple connection points for connecting with the positive or negative electrode of the battery cell, or multiple connection points for connecting with the load, each connection point can be controlled by a switch to realize the connection or disconnection between the connection point and the positive or negative electrode of the battery cell and the load, and the second induced magnetic field generated by connecting the positive or negative electrode of the battery cell at different connection points has different magnitudes. The specific structure of the battery can refer to the structure of the above embodiment, which will not be repeated here.

[0123] It can be understood that the electronic device in this embodiment can be a mobile phone, a tablet computer, an audio player, a video player, an augmented reality (AR) device, a virtual reality (VR) device, and the like in addition to headphones, speakers, and the like.

[0124] The present application also provides a method for manufacturing a battery. Fig.26 , Fig.26 A schematic diagram of a method for manufacturing a battery provided in an embodiment of the present application. The battery includes a battery cell; the method includes:

[0125] 501, obtaining a first induced magnetic field of the battery cell;

[0126] 502, obtaining a second induced magnetic field by calculation according to the first induced magnetic field, wherein after the second induced magnetic field is superimposed on the first induced magnetic field, the magnetic field strength of the first induced magnetic field is weakened;

[0127] 503, acquiring parameters of the electromagnetic induction body to be installed according to the second induced magnetic field;

[0128] 504, installing the corresponding electromagnetic induction body according to the parameters.

[0129] The first induced magnetic field of the battery cell can be obtained first, and then the second induced magnetic field can be calculated based on the first induced magnetic field. The purpose of the second induced magnetic field is to weaken the magnetic field strength of the first induced magnetic field after being superimposed on the first induced magnetic field. After the second induced magnetic field is calculated, the parameters of the electromagnetic induction body that generates the second induced magnetic field can be calculated, such as the material, size, and distance from the battery cell of the second induced magnetic field, and then a suitable electromagnetic induction body can be selected and installed according to the parameters.

[0130] When the second induced magnetic field is a coil, the parameters of the electromagnetic induction body generating the second induced magnetic field may also include the number of turns, the diameter, the thickness of the coil, etc.

[0131] It is understandable that before installing the electromagnetic induction body, a preset position where the magnetic field strength of the first induced magnetic field needs to be weakened can be obtained in advance. The preset position can be used to install electromagnetic sensitive devices such as electroacoustic devices, antennas, etc., and then the second induced magnetic field is calculated based on the first induced magnetic field and the preset position.

[0132] It can be understood that the manufacturing method of the battery in this embodiment can be made into a battery assembly or battery in any of the above embodiments. The manufacturing method of the battery in this embodiment may also include other steps to manufacture a battery assembly or battery in any of the above embodiments, which will not be repeated here. For example, the coil can be connected to the positive or negative electrode of the battery cell, or a current detector can be provided, or the battery cell and the coil can be encapsulated in the same housing, or multiple connection points can be provided on the coil, etc.

[0133] The circuit structure, battery, electronic device and battery manufacturing method provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A circuit structure, It is characterized in that include: A battery, the battery comprising a first positive electrode, a first negative electrode and a battery cell, the battery cell being connected between the first positive electrode and the first negative electrode, and the battery cell being capable of generating a first induced magnetic field when a changing current exists; as well as An electromagnetic induction body, wherein the electromagnetic induction body is configured to generate a second induced magnetic field when there is a changing current, wherein the second induced magnetic field can be superimposed on the first induced magnetic field, and the electromagnetic induction body is a coil, and the coil is connected to the first positive electrode or the first negative electrode; A current detector is connected to the electromagnetic induction body, the current detector detects a first current in the battery cell, and adjusts a second current in the electromagnetic induction body according to the first current, the direction of the first current is opposite to the direction of the second current, so that the second induced magnetic field and the first induced magnetic field cancel each other out to weaken the magnetic field strength of the first induced magnetic field, wherein the battery cell generates the first induced magnetic field according to the first current, and the electromagnetic induction body generates the second induced magnetic field according to the second current.

2. The circuit structure according to claim 1, It is characterized in that The electromagnetic induction body is arranged at a first position in the first induction magnetic field, so that after the second induction magnetic field is superimposed on the first induction magnetic field, the magnetic field intensity at the second position in the first induction magnetic field is weakened.

3. The circuit structure according to claim 1, It is characterized in that The coil is formed by a first trace etched on a circuit board.

4. A battery, It is characterized in that include: First positive electrode; First negative electrode; A battery cell, the battery cell being connected between the first positive electrode and the first negative electrode, the battery cell being capable of generating a first induced magnetic field when a changing current exists; as well as An electromagnetic induction body, wherein the electromagnetic induction body is configured to generate a second induced magnetic field when there is a changing current, wherein the second induced magnetic field can be superimposed on the first induced magnetic field, and the electromagnetic induction body is a coil, and the coil is connected to the first positive electrode or the first negative electrode; A current detector is connected to the electromagnetic induction body, the current detector detects a first current in the battery cell, and adjusts a second current in the electromagnetic induction body according to the first current, the direction of the first current is opposite to the direction of the second current, so that the second induced magnetic field and the first induced magnetic field cancel each other out to weaken the magnetic field strength of the first induced magnetic field, wherein the battery cell generates the first induced magnetic field according to the first current, and the electromagnetic induction body generates the second induced magnetic field according to the second current.

5. The battery according to claim 4, It is characterized in that The battery further comprises a shell, in which the battery core and the electromagnetic induction body are packaged.

6. The battery according to claim 5, It is characterized in that The battery cell includes a second positive electrode and a second negative electrode, one end of the coil is connected to the second positive electrode, and the other end is connected to the first positive electrode; or one end of the coil is connected to the second negative electrode, and the other end is connected to the first negative electrode.

7. The battery according to claim 6, It is characterized in that The battery core is a wound battery core, and the coil is arranged at one end of the battery core and is parallel to the end surface of the battery core.

8. The battery according to claim 7, It is characterized in that The battery further includes an insulating layer, which is disposed between the battery core and the coil.

9. The battery according to claim 4, It is characterized in that The battery further comprises a protection member, the electromagnetic induction body is arranged in the protection member, and the protection member is adjacent to the battery cell.

10. The battery according to claim 4, It is characterized in that The electromagnetic induction body is arranged at a first position in the first induction magnetic field, so that after the second induction magnetic field is superimposed on the first induction magnetic field, the magnetic field intensity at the second position in the first induction magnetic field is weakened.

11. The battery according to claim 4, It is characterized in that The battery further comprises a circuit board, and the electromagnetic induction body is arranged on the circuit board.

12. The battery according to claim 11, It is characterized in that The circuit board has a first wiring formed by etching, and the first wiring forms the electromagnetic induction body.

13. The battery according to claim 11, It is characterized in that The circuit board is stacked on the surface of the battery core.

14. An electronic device, It is characterized in that include: load; as well as A circuit structure or a battery, wherein the circuit structure or the battery is connected to the load and supplies power to the load, wherein the circuit structure is the circuit structure as described in any one of claims 1 to 3, and the battery is the battery as described in any one of claims 4 to 13.

15. The electronic device according to claim 14, It is characterized in that The load is an electromagnetic device. When the electromagnetic induction body is set at a first position in the first induction magnetic field, the electromagnetic device is set at a second position in the first induction magnetic field, so that after the second induction magnetic field is superimposed on the first induction magnetic field, the magnetic field strength at the second position in the first induction magnetic field is weakened.

16. A method for manufacturing a battery, It is characterized in that The battery as claimed in any one of claims 4 to 13; the method comprising: Acquire a first induced magnetic field of the battery core; A second induced magnetic field is calculated based on the first induced magnetic field, and after the second induced magnetic field is superimposed on the first induced magnetic field, the magnetic field strength of the first induced magnetic field is weakened; acquiring parameters of the electromagnetic induction body to be installed according to the second induction magnetic field; and The corresponding electromagnetic induction body is installed according to the parameters.

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