Heating device, battery and electronic equipment

Abstract

The utility model provides a heating device, a battery and electronic equipment. And the heating device is used for heating the battery cell of the battery. The heating device comprises a bottom film layer, a heating layer and a bonding layer which are fixed together, and the heating layer is arranged between the bottom film layer and the bonding layer. The heating layer is arranged between the bottom film layer and the bonding layer, the battery cell is heated when the temperature of the battery cell is low, the charging requirement of the battery cell in a low-temperature scene is met, and the use reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic devices, in particular to a heating device, a battery and an electronic device. BACKGROUND

[0002] With the increasing improvement of people's living standards, people's requirements for electronic devices are also increasing, and various types of electronic devices have appeared on the market, such as mobile phones, notebooks, smart watches, tablet computers, etc. As the main power source of electronic devices, the battery plays an important role in the performance and endurance of electronic devices. In a low temperature environment, the charging efficiency of the battery is low or cannot be charged, which is difficult to meet the user's use demand in a low temperature environment. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heating device, a battery and an electronic device, which solves the problem that the battery cannot be normally charged in a low temperature environment.

[0004] The embodiment of the present application provides a heating device for heating the battery cell, which comprises a bottom film layer, a heating layer and an adhesive layer fixed together, and the heating layer is arranged between the bottom film layer and the adhesive layer.

[0005] Further, the heating device further comprises a substrate layer, the adhesive layer comprises a first adhesive layer and a second adhesive layer, and the substrate layer is arranged between the first adhesive layer and the second adhesive layer.

[0006] Further, the adhesive layer, the substrate layer, the heating layer and the bottom film layer are integrally pressure bonded and formed.

[0007] Further, the heating layer is provided with a plurality of through holes to form a grid shape, and after the heating layer is fixed with the adhesive layer, the surface of the adhesive layer forms a rough adhesive surface.

[0008] The embodiment of the present application further provides a battery comprising a battery cell and the above-mentioned heating device, wherein the bottom film layer covers at least part of the battery cell, and the adhesive layer is fixedly attached to the battery cell.

[0009] Further, the battery further comprises a first circuit board and a second circuit board electrically connected, the first circuit board is electrically connected with the battery cell and the heating layer, and the second circuit board is fixed with the battery cell.

[0010] Further, the heating device comprises a connecting portion extending from the heating layer, the heating device removes the adhesive layer covering the connecting portion by laser to expose the connecting portion, the first circuit board is provided with a solder pad, and the solder pad is electrically connected with the connecting portion.

[0011] Further, the battery further comprises a control device and a detection device for detecting the temperature of the battery cell, and the control device controls the heating layer to be powered on or powered off according to the detection result of the detection device.

[0012] Further, when the temperature of the battery cell detected by the detection device is greater than or equal to a first temperature, the battery cell is powered on to be charged, and during the charging of the battery cell, the heating layer is powered off; when the temperature of the battery cell detected by the detection device is lower than the first temperature, the heating device heats the battery cell, and the battery cell is powered off.

[0013] The application further provides an electronic device comprising the battery.

[0014] In some embodiments, the heating device of the above technical solution heats the battery cell, and after the temperature of the battery cell is raised, the battery cell can be normally charged, thereby solving the problem that the battery cannot be normally charged in a low-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic diagram of a battery according to an example embodiment of the application.

[0016] Figure 2 FIG. 2 is an exploded view of the battery shown in FIG. 1. Figure 1

[0017] Figure 3 FIG. 4 is a cross-sectional view of the heating device shown in FIG. 1. Figure 2

[0018] Figure 4 FIG. 5 is an enlarged view of circle A of the cross-sectional view shown in FIG. 4. Figure 3

[0019] Figure 5 FIG. 6 is a structural schematic diagram of the heating device shown in FIG. 1, wherein only part of the heating device is shown. Figure 3

[0020] Figure 6 FIG. 7 is a schematic diagram of the heating device shown in FIG. 1 after being flattened. Figure 2

[0021] Figure 7 FIG. 8 is another view of the schematic diagram of the heating device shown in FIG. 7 after being flattened. Figure 6

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] ​​​​​​100, heating device; 101, body; 102, pulling part; 103, fixed part; 104, connecting part; 200, electric core; 2001, upper surface; 300, first circuit board; 301, pad; 302, detection device; 400, second circuit board; 10, bottom film layer; 20, heating layer; 30, adhesive layer; 31, first adhesive layer; 32, second adhesive layer; 40, base material layer. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments (or, modes of implementation) of the present application will be described clearly and completely below with reference to the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0025] If the application embodiments involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are used only to explain the relative positional relationship, movement, etc. between the components in a certain posture (as shown in the drawings); if the posture changes, the directional indications or positional relationships will also change accordingly. In addition, the terms "first", "second", etc. in the application embodiments are used only for convenience of description, and cannot be understood as indicating or implying relative importance.

[0026] The embodiments of the present application provide an electronic device, which includes but is not limited to a mobile phone, a tablet computer, a desktop computer, a television or a vehicle-mounted computer. The electronic device includes a battery, which provides power for the electronic device. The battery can be an alkaline battery, a zinc-carbon battery, a lithium battery or a silver-zinc battery, etc. The present application does not limit the types of electronic devices and batteries.

[0027] Referring to Figures 1-2 As shown in the drawings, the embodiments of the present application also provide a battery, which includes an electric core 200 and a heating device 100. When the electric core 200 is in a low-temperature environment, the charging efficiency of the electric core 200 is low or the electric core 200 cannot be charged, which is difficult to meet the charging needs of users in a low-temperature scenario. The heating device 100 is used to heat the electric core 200 of the battery, so that the battery is warmed up for charging, thereby solving the problem that the battery cannot be normally charged in a low-temperature environment, and increasing the use scenarios of the electronic device.

[0028] In some embodiments, the heating device 100 covers part or all of the outer surface of the electric core 200.

[0029] In the embodiments of the present application, the heating device 100 is wrapped around the single battery cell 200, and in addition, when a plurality of battery cells 200 form a battery pack, the heating device 100 can be wrapped around the single battery cell 200 or directly wrapped around the entire battery pack.

[0030] Referring to Figures 3-4 As shown in the drawings, the heating device 100 comprises a bottom film layer 10, a heating layer 20 and an adhesive layer 30 fixed together, the heating layer 20 is arranged between the bottom film layer 10 and the adhesive layer 30, the bottom film layer 10 wraps at least part of the battery cell 200, the adhesive layer 30 is pasted and fixed with the battery cell 200, and the heating layer 20 is used to heat the battery cell 200.

[0031] In some embodiments, the bottom film layer 10 is a PET (polyethylene terephthalate) insulating film, which has excellent electrical insulation performance and is resistant to high temperature and wear and tear, avoiding electrical short circuit or leakage problems, and improving the service life of the heating device 100 and the battery cell 200.

[0032] In some embodiments, the bottom film layer 10 can also use a PI (polyimide) film, a PTFE (polytetrafluoroethylene) film, a polyurethane film or a silicone insulating layer, etc.

[0033] In some embodiments, an insulating coating layer such as an epoxy resin or polyurethane coating layer can also be coated on the surface of the heating layer 20 to form the bottom film layer 10 to provide insulation, heat insulation and other functions.

[0034] Referring to Figure 5 As shown in the drawings, the heating device 100 further comprises a substrate layer 40, the adhesive layer 30 comprises a first adhesive layer 31 and a second adhesive layer 32, and the substrate layer 40 is arranged between the first adhesive layer 31 and the second adhesive layer 32 to provide additional support force, so that the heating device 100 can still maintain its shape and function under various environmental conditions.

[0035] In some embodiments, the substrate layer 40 can also not be provided, and the heating layer 20 is fixed with the battery cell 200 through the adhesive layer 30.

[0036] In some embodiments, the adhesive layer 30, the substrate layer 40, the heating layer 20 and the bottom film layer 10 are integrally press-bonded and formed, and a rolling technology is used to press the materials of each layer together to form an integrated structure, so as to facilitate the assembly and disassembly of the heating device 100 and the battery cell 200.

[0037] In some embodiments, the heating layer 20 is provided with a plurality of through holes to form a grid shape, and after the heating layer 20 is fixed with the adhesive layer 30, the surface of the adhesive layer 30 forms a rough adhesive surface, which effectively reduces the adhesion of the adhesive layer 30, so as to facilitate the disassembly of the heating device 100 and the battery cell 200; at the same time, the rough adhesive surface is also conducive to the exhaust during the attachment of the heating device 100 and the battery cell 200.

[0038] In some embodiments, the substrate layer 40 is made of a flexible material so as to be bent and attached according to the shape of the battery cell 200.

[0039] In some embodiments, the heating layer 20 is made of a metal material, such as an electric heating wire, which can quickly generate heat so that the battery cell 200 can quickly reach a predetermined temperature.

[0040] In some embodiments, when the temperature of the battery cell 200 is high, the heating layer 20 has good heat conduction performance, so that the heat of the battery cell 200 can be transferred to other elements in the electronic device, achieving a heat dissipation effect.

[0041] In some embodiments, the heating layer 20 can also use CNT (carbon nanotube), resistance heating material (such as metal resistance belt or thin film heating material), or heating cable, etc. to heat the battery cell 200.

[0042] Referring to Figures 1-5 As shown, the battery further includes a first circuit board 300 and a second circuit board 400 electrically connected, the first circuit board 300 is electrically connected with the battery cell 200 and the heating layer 20, and the second circuit board 400 is fixed with the battery cell 200.

[0043] In some embodiments, the first circuit board 300 is fixed with the battery cell 200, and the first circuit board 300 can monitor the use of the battery cell 200, including the power, the charging state, the working time, the service life, etc., and can also control the charging and discharging process of the battery cell 200, to ensure the safety and service life of the battery cell 200.

[0044] In some embodiments, the first circuit board 300 is a hard board, which focuses on enhancing the structural strength and stability.

[0045] In some embodiments, the second circuit board 400 is a FPC (flexible printed board), which is wrapped outside the first circuit board 300 and is electrically connected with the battery cell 200 and the first circuit board 300, and is connected with the battery cell 200 and other elements such as the main board of the electronic device, to ensure that the battery cell 200 can stably supply power.

[0046] In some embodiments, the second circuit board 400 is made of polyimide or polyester film, etc., which has good flexibility and bendability.

[0047] The heating device 100 comprises a connecting portion 104 extending from the self-heating layer 20. In some embodiments, the heating device 100 is subjected to laser removal of the adhesive layer 30 covering the connecting portion 104, so as to expose the connecting portion 104. The first circuit board 300 is provided with a solder pad 301, which is electrically connected with the connecting portion 104, so as to electrically connect the first circuit board 300 with the self-heating layer 20. The laser removal of the adhesive layer 30 covering the connecting portion 104 ensures that the metal surface of the connecting portion 104 can be directly in contact with the solder pad 301, thereby realizing stable electrical connection. At the same time, the contact resistance caused by the presence of the adhesive layer 30 is reduced, and the efficiency and reliability of the electrical connection are improved.

[0048] In some embodiments, the adhesive layer 30 covering the connecting portion 104 can also be removed by chemical removal, mechanical removal or thermal stripping technology.

[0049] In some embodiments, the number of the connecting portion 104 and the solder pad 301 is two, and the two solder pads 301 are arranged on the same side of the heating device 100. The number of the connecting portion 104 and the solder pad 301 is not limited in the present application.

[0050] In some embodiments, the battery further comprises a control device and a detection device 302 for monitoring the temperature of the battery cell 200. The control device controls the self-heating layer 20 to be powered on or powered off according to the detection result of the detection device 302.

[0051] In some embodiments, the control device can be arranged on the first circuit board 300 or the second circuit board 400. The control device is electrically connected with the battery cell 200, and the battery cell 200 supplies power to the control device. The control device controls the battery cell 200 to be powered on or powered off, and the control device is electrically connected with the self-heating layer 20, so as to control the self-heating layer 20 to be powered on or powered off.

[0052] In some embodiments, the detection device 302 is electrically connected with the first circuit board 300, the first circuit board 300 is electrically connected with the battery cell 200, and the detection device 302 is electrically connected with the battery cell 200, so as to monitor the temperature of the battery cell 200 in real time.

[0053] In some embodiments, the detection device 302 can be a temperature monitoring chip or a temperature sensor or other elements that can monitor temperature changes.

[0054] In some embodiments, the detection device 302 can be arranged on the first circuit board 300 or the battery cell 200, as long as the detection device 302 is electrically connected with the first circuit board 300 and the battery cell 200.

[0055] When the temperature of the battery cell 200 detected by the detection device 302 is greater than or equal to the first temperature, the battery cell 200 is powered on for charging. During the charging process, the heating layer 20 is de-energized. When the temperature of the battery cell 200 detected by the detection device 302 is lower than the first temperature, the heating device 100 heats the battery cell 200, and the battery cell 200 is de-energized.

[0056] In some implementations, the first temperature range may be -5°C to 15°C.

[0057] In some implementations, when the detection device 302 detects that the temperature of the battery cell 200 is below -5°C, the detection device 302 sends a signal to the control device. The control device controls the heating device 100 to heat the battery cell 200 and controls the battery cell 200 to stop charging. When the heating layer 20 of the heating device 100 heats the battery cell 200 until the temperature of the battery cell 200 rises to 15°C, when the detection device 302 detects that the temperature of the battery cell 200 has reached 15°C, the control device will control the heating layer 20 to cut off the power and control the battery cell 200 to start charging. In this way, the battery cell 200 can quickly recover its temperature in low-temperature scenarios and then quickly enter the charging mode, improving the reliability of the battery and electronic equipment.

[0058] See Figure 1 , Figure 6 and Figure 7 As shown, the heating device 100 includes a body 101 and a fixing part 103 extending outward from one side of the body 101. At least part of the body 101 is attached to the lower surface of the battery cell 200, and the fixing part 103 is attached to the side and upper surface 2001 of the battery cell 200.

[0059] The battery cell 200 and the heating device 100 are located inside the battery compartment. The heating device 100 also includes a lifting part 102 that is attached and fixed to the side and upper surface 2001 of the battery cell 200. The lifting part 102 is located outside the fixing part 103 and is connected to the fixing part 103 through a dotted line. When the battery cell 200 needs to be removed from the battery compartment, the lifting part 102 and the fixing part 103 are first torn apart to separate them from the upper surface 2001 of the battery cell 200. The bonding strength between the body 101 and the inner wall surrounding the battery compartment is greater than or equal to the bonding strength between the body 101 and the battery cell 200. The lifting part 102 is lifted along the first direction to remove the battery cell 200 from the battery compartment. The body 101 remains in the battery compartment. The body 101 forms a partition between the battery cell 200 and the inner wall surrounding the battery compartment to prevent the removal of the battery cell 200 from affecting electronic components such as circuit boards, motherboards, and displays of electronic devices.

[0060] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structure described in the above embodiments and shown in the accompanying drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A heating device for heating an electrode of a battery, characterized by, The heating device comprises a bottom film layer, a heating layer and an adhesive layer fixed together, the heating layer is arranged between the bottom film layer and the adhesive layer.

2. The heating device of claim 1, wherein The heating device further comprises a substrate layer, the adhesive layer comprises a first adhesive layer and a second adhesive layer, the substrate layer is arranged between the first adhesive layer and the second adhesive layer.

3. The heating device of claim 2, wherein, The adhesive layer, the substrate layer, the heating layer and the bottom film layer are integrally press-bonded and formed.

4. The heating device of claim 2, wherein, The heating layer is provided with a plurality of through holes to form a grid shape, and after the heating layer is fixed with the adhesive layer, the surface of the adhesive layer forms a rough adhesive surface.

5. A battery, characterized by The battery comprises an electric core and the heating device according to any one of claims 1 to 4, the bottom film layer covers at least part of the electric core, and the adhesive layer is fixedly attached to the electric core.

6. The battery of claim 5, wherein, The battery further comprises a first circuit board and a second circuit board electrically connected, the first circuit board is electrically connected to the electric core and the heating layer, and the second circuit board is fixed to the electric core.

7. The battery of claim 6, wherein, The heating device comprises a connecting portion extending from the heating layer, the heating device is removed of the adhesive layer covering the connecting portion by laser to expose the connecting portion, the first circuit board is provided with a solder pad electrically connected to the connecting portion.

8. The battery of claim 6, wherein, The battery further comprises a control device and a detection device for monitoring the temperature of the electric core, and the control device controls the heating layer to be powered on or powered off according to the detection result of the detection device.

9. The battery of claim 8, wherein, When the temperature of the electric core detected by the detection device is greater than or equal to a first temperature, the electric core is powered on to be charged, and the heating layer is powered off during the charging of the electric core; when the temperature of the electric core detected by the detection device is lower than the first temperature, the heating device heats the electric core, and the electric core is powered off.

10. An electronic device, comprising: The battery comprises the battery according to any one of claims 5 to 9.

Images