CN111403855A

CN111403855A - Self-heating virus-killing battery device and electronic equipment

Info

Publication number: CN111403855A
Application number: CN202010266850.1A
Authority: CN
Inventors: 陈志勇
Original assignee: Guangdong Mic Power New Energy Co Ltd
Current assignee: Guangdong Mic Power New Energy Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-07-10
Anticipated expiration: 2040-04-07
Also published as: CN111403855B

Abstract

The embodiment of the invention discloses a battery device capable of automatically heating and killing viruses and electronic equipment. The battery device includes: a battery body; the discharge circuit and the battery body form a loop, and the battery body releases heat; and the temperature protection device is connected with the discharge circuit, and cuts off the discharge circuit when the temperature of the battery body rises to a set temperature. The battery device can perform self-heating so as to effectively kill viruses.

Description

Self-heating virus-killing battery device and electronic equipment

Technical Field

The invention relates to the technical field of energy storage devices, in particular to a battery device capable of automatically heating and killing viruses and electronic equipment.

Background

There are many routes of transmission of viruses, e.g., new coronaviruses, such as droplet transmission, aerosol transmission, contact transmission, and the like. Viruses pose a great threat to human health.

Electronic devices, such as earphones, mobile phones, and the like, are prone to viruses during assembly and use. People are easily infected with viruses when using electronic devices. In general, electronic equipment is disinfected with a disinfectant (e.g., 84 disinfectant). However, the disinfectant can only disinfect the surface of the electronic device, and the disinfectant generally contains corrosive agents, which easily corrode the surface of the electronic device.

In addition, people usually cannot carry the disinfectant with them and cannot carry out virus killing operation on electronic equipment at any time.

Therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

An object of the present invention is to provide a new solution for a self-heating virucidal battery device.

According to a first aspect of the present invention, a self-heating virucidal battery device is provided. The battery device includes: a battery body; a discharge circuit forming a loop with the battery body to cause the battery body to release heat; and the temperature protection device is connected with the discharge circuit, and cuts off the discharge circuit when the temperature of the battery body rises to a set temperature.

Optionally, a switching device is further included, the switching device being connected in series within the discharge circuit.

Optionally, the set temperature is greater than or equal to 72 ℃.

Optionally, the discharge circuit comprises a current limiting resistive element in series with the temperature protection device.

Optionally, the discharge circuit further comprises a protection circuit module, and the protection circuit module is connected with the discharge circuit in parallel.

Optionally, the protection circuit module includes a printed circuit board, a hollow area is disposed on the printed circuit board, and the temperature protection device is disposed in the hollow area.

Optionally, the temperature protection device includes a housing, a first connecting portion, a second connecting portion and a heat-sensitive elastomer, the first connecting portion and the second connecting portion are embedded in the housing, the heat-sensitive elastomer is located in the housing, the first connecting portion and the second connecting portion are connected in the discharge circuit, the first connecting portion has a cantilever, a free end of the cantilever contacts with the second connecting portion, the heat-sensitive elastomer is located on one side of the cantilever, and under the condition that the set temperature is reached, the heat-sensitive elastomer deforms, so that the free end separates from the second connecting portion.

Optionally, the heat-sensitive elastic body is of an arc-shaped structure and comprises two heat-sensitive elastic bodies, and the two heat-sensitive elastic bodies are stacked together in an inner arc opposite mode.

Optionally, the heat-sensitive elastomer is a heat-sensitive shape memory material or a bimetallic material.

Optionally, a heat conducting sheet is embedded in the wall of the housing, and the heat conducting sheet is in contact with the thermosensitive elastomer.

Optionally, the temperature protection device is bonded to the battery body by a heat conductive adhesive.

Optionally, the battery pack further comprises an alarm device, and the alarm device sends out an alarm signal under the condition that the temperature of the battery body rises to the warning temperature.

According to another embodiment of the present disclosure, an electronic device is provided. The electronic equipment comprises a shell and the self-heating virus-killing battery device, wherein the battery device is positioned in the shell.

According to one embodiment of the present disclosure, the battery device is capable of self-heating to effectively kill viruses.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a perspective view of a self-heating virucidal battery apparatus according to one embodiment of the present disclosure.

Fig. 2 is a top view of a self-heating virucidal battery apparatus according to one embodiment of the present disclosure.

Fig. 3 is a circuit diagram of a self-heating virucidal battery apparatus according to one embodiment of the present disclosure.

Fig. 4 is a cross-sectional view of a circuit breaker according to one embodiment of the present disclosure.

Fig. 5 is a cross-sectional view of a circuit breaker according to one embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a headset according to one embodiment of the present disclosure.

Fig. 7 is a schematic structural diagram of a smart watch according to one embodiment of the present disclosure.

Description of reference numerals:

10: a battery device, 11: a battery body, 12: a nickel sheet, 13: a PCB, 14: a hollowed-out area, 15: a circuit breaker, 151: a first connecting part, 1510: a cantilever, 1511: a contact, 152: a second connecting part, 1521: an extending part, 153: a base, 154: a cover, 155: a cavity, 156: a metal cover plate, 158: a bimetallic plate, 159: a PTC, 16: a lead, 17: a microswitch, 18: a protection circuit module, 19: a mounting plate, 21: a shell, 22: an audio chip, 23: a loudspeaker and 24: L ED lamp.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

According to one embodiment of the present disclosure, a self-heating virucidal battery apparatus 10 is provided. As shown in fig. 1 to 3, the battery device 10 includes: battery body 11, discharge circuit and temperature protection device. The battery body 11 is a button battery, a pouch battery, a dry battery, or the like.

As shown in fig. 3, the battery device 10 includes a power supply circuit and a discharge circuit. The power supply circuit is connected in parallel with the discharge circuit. The power supply circuit is used to supply power to an external device, and the discharge circuit is used for self-heating of the battery body 11. The self-heating means that the battery body 11 itself generates heat at a set discharge current. The discharge circuit forms a loop with the battery body 11 to make the battery body 11 release heat. The discharge circuit has a smaller resistance with respect to the power supply circuit to achieve large-current discharge of the battery body 11. For example, the current magnitude exceeds the rated current of the battery body 11. The cells of the battery body 11 themselves have a set resistance. Under a large current, the battery body 11 generates heat by its own resistance. The heat can meet the requirement of killing virus. The virus may be, but is not limited to, a new coronavirus, a SARS virus, a cold virus, and the like.

For example, the case 21 of the battery body 11 is made of metal, such as stainless steel, copper alloy, aluminum alloy, or the like. The metal material can rapidly conduct heat to the outer surface of the battery body 11.

The power supply circuit causes the battery body 11 to operate at a rated current to output electric energy to the outside. For example, the power supply circuit supplies power to a speaker, various sensors, a CPU, a filter, and the like. At the rated current, the battery body 11 does not generate a large amount of heat.

As shown in fig. 3, the temperature protection device is connected to the discharge circuit. When the temperature of the battery body 11 rises to a set temperature, the temperature protection device cuts off the discharge circuit. The continuous large-current discharge easily causes damage to the battery body 11 and even causes explosion of the battery body 11. When the temperature of the battery body 11 rises to the set temperature, the temperature protection device cuts off the discharge circuit to ensure the safety of the battery body 11.

For example, the temperature protection device includes a circuit breaker 15. The breaker 15 forms a short circuit under the condition that the temperature of the battery body 11 reaches the set temperature.

In one example, the set temperature is greater than or equal to 72 ℃. When the set temperature is reached or exceeded, the temperature protection device forms an open circuit. For example, when the set temperature is 72 ℃, the breaker 15 breaks at 72 ℃ to cut off the discharge circuit. In the usual case, the new coronavirus is inactivated at 56 ℃ for 30 minutes. In this example, the temperature is set to 72 ℃ or higher, at which not only can it be ensured that viruses on the battery device 10 itself can be killed, but also the temperature of the electronic equipment in which the battery device 10 is located can be ensured to exceed 56 ℃, thereby effectively killing viruses of electronic equipment other than the battery device 10.

In one example, as shown in fig. 1-3, a switching device is further included, the switching device being connected in series within the discharge circuit. When virus killing is needed, an operator turns on the switching device to electrify the discharge circuit. The switching device is, for example, a microswitch 17. The microswitch 17 is connected in series in the discharge circuit through the lead 16. The microswitch 17 is fixed on the mounting plate 19. The microswitch 17 has simple structure, small volume and easy operation.

The switching device is not limited to the microswitch 17, and for example, the on/off of the discharge circuit is controlled by software on a mobile phone or a computer. It is also possible that the switching means are touch switches, for example resistive touch switches and capacitive touch switches.

In one example, as shown in FIG. 3, the discharge circuit includes a current limiting resistive element. The current limiting resistance element is connected in series with the temperature protection device. The current limiting resistance element plays a role of current limiting, and can effectively prevent the current of the discharge circuit from being overlarge.

In one example, as shown in fig. 1-3, a protection circuit module 18 is further included, the protection circuit module 18 being connected in parallel with the discharge circuit. The protection circuit module 18 can effectively prevent overcurrent, overcharge, overdischarge, etc. during the charge and discharge of the battery pack 10, thereby effectively protecting the battery body 11.

For example, the protection current module includes a Printed Circuit Board (PCB 13), a chip CM1103, a resistance element R1, a resistance element R2, and a capacitor C1. A chip CM1103, a resistance element R1, a resistance element R2, and a capacitor C1 are integrated on the PCB 13. The chip CM1103 has a VCC terminal, a S1 terminal, a S2 terminal, and a Vm terminal, and the terminals are connected as shown in FIG. 3.

The entirety of the PCB13 is circular. The battery body 11 has a cylindrical shape. The PCB13 is provided on one end face of the battery body 11. Pads B +, B-are provided on the PCB 13. The pads B +, B-are for welding with the positive and negative electrodes of the battery body 11. For example, the nickel plates 12 are drawn from the positive electrode and the negative electrode of the battery body 11, respectively. Two nickel plates 12 are connected to respective pads of the PCB 13. The PCB13 is also provided with positive and Negative pads P +, P-and PH-Negative Temperature coefficient thermistor (NTC) for outputting power to external devices.

In one example, as shown in fig. 1, a hollowed-out area 14 is provided on the printed wiring board. The hollowed-out area 14 is a through slot formed on the PCB 13. The battery body 11 is exposed in the hollow area 14. The temperature protection device is arranged in the hollow-out region 14. The temperature protection device is in contact with the battery body 11. In this way, the overall height of the battery device 10 can be effectively reduced.

In addition, the temperature protection device can sense the temperature of the battery body 11 more effectively, thereby performing an open circuit protection function.

In one example, the temperature protection device is bonded to the battery body 11 by a thermally conductive adhesive. The thermally conductive paste has good thermal conductivity, which enables the temperature protection device to respond more rapidly to changes in the temperature of the battery body 11. The heat-conducting adhesive also has good connection performance and sealing performance.

In other examples, the PCB13 is a one-piece board and the temperature protection device is secured to the PCB 13. In this way, the temperature protection device can also respond to a change in the temperature of the battery body 11.

Further, the temperature protection device is fixed on the PCB13 by a thermally conductive adhesive. The PCB13 is fixed to the battery body 11 by a heat conductive adhesive. Thus, the response speed of the temperature protection device is faster.

In one example, as shown in fig. 5, the temperature protection device includes a case, a first connection part 151, a second connection part 152, and a heat-sensitive elastic body. The first connecting portion 151 and the second connecting portion 152 are embedded in the housing, and the heat-sensitive elastomer is located in the housing. The first connection portion 151 and the second connection portion 152 are connected in a discharge circuit. The first connection portion 151 and the second connection portion 152 are in a normally closed state. The first connection portion 151 has a cantilever 1510, and a free end of the cantilever 1510 contacts the second connection portion 152. The thermally sensitive elastomer is located on one side of the cantilever 1510. When the set temperature is reached, the heat-sensitive elastic body deforms to separate the free end from the second connecting portion 152.

For example, the housing includes a base 153 and a cover 154. The base 153 is formed with a recessed cavity 155. The heat-sensitive elastomer is located at the bottom of the cavity 155. The cover 154 covers the cavity 155. The shell is made of plastic, rubber and the like. The cover 154 and the base 153 are formed by injection molding. The first connection portion 151 and the second connection portion 152 are each a metal sheet, such as a stainless steel sheet, a copper sheet, an aluminum sheet, or the like. The first connection portion 151 and the second connection portion 152 are injection-molded as inserts on opposite sidewalls of the base 153, respectively. The cantilever 1510 of the first connection portion 151 is located within the cavity 155, and an outwardly projecting contact 1511 is provided at a free end of the cantilever 1510. An end of the first connection portion 151 opposite to the contact 1511 is located outside the housing, and is connected to one terminal of the discharge circuit. One end of the second connection portion 152 is located in the cavity 155. The other end is located outside the cavity 155 and is connected to the other terminal of the discharge circuit.

The heat-sensitive elastic body is a heat-sensitive shape memory material or a bimetallic material.

The thermosensitive shape memory material can generate plastic deformation when the temperature does not reach the set temperature; and returns to the original shape when the temperature reaches or exceeds the set temperature. For example, the initial shape is a mid-bulging arc-shaped structure; the shape after plastic deformation is a flat structure or an arc structure with smaller height. The arcuate configuration effectively increases the height of the thermally sensitive shape memory material, thereby jacking the cantilever 1510.

The heat-sensitive shape memory material comprises a shape memory alloy or a heat-sensitive shape memory polymer material. The thermosensitive shape memory polymer material includes polynorbornene, styrene-butadiene copolymer, polyethylene-vinyl acetate copolymer or polycaprolactam. The above materials all have good temperature sensitivity and return to an original shape at a set temperature, thereby enabling the cantilever 1510 to be lifted up to separate the contact 1511 from the second connection portion 152.

As shown in fig. 5, the bi-metallic material comprises two metallic pieces, such as bi-metallic piece 158, bonded together. The two metal sheets have different thermal expansion coefficients. In a normal state, the bimetal 158 maintains a predetermined shape and has a small overall height. When heated, because the extending lengths of the two metal sheets are different and the two metal sheets are combined together, the metal sheet on the side with the longer extending length can form a convex cambered surface, and the metal sheet on the side with the shorter extending length can form a concave cambered surface. The degree of curvature of the arc surface is high, so that the overall height of the bimetal strip 158 is increased, and thus the cantilever 1510 can be lifted up to separate the contact 1511 from the second connection portion 152.

In one example, the heat-sensitive elastic body is in an arc-shaped structure and comprises two heat-sensitive elastic bodies which are stacked together in a manner that inner arcs face each other. In this example, when the set temperature is reached (e.g., 72 ± 5 ℃), the increased heights of the two thermo-sensitive elastic bodies can be superimposed on each other, so that the cantilever 1510 can be quickly jacked up to form an open circuit of the first connecting portion 151 and the second connecting portion 152, thereby stopping the large-current discharge of the battery body 11.

In one example, at least one of the two thermally sensitive elastomers is a bimetallic material, such as bimetallic strip 158. With this arrangement, the durability of the heat-sensitive elastic body is good.

In other examples, one of the thermally sensitive elastomers is a bimetal 158, and the other is a Positive Temperature Coefficient thermistor (PTC) 159. For example, the PTC159 is a high molecular polymer material and deforms with an increase in temperature. The PTC159 can also deform when the set temperature is reached.

In one example, as shown in fig. 5, heat-conducting fins are embedded in the wall of the housing. The heat conducting sheet is made of metal material, such as stainless steel, copper alloy, aluminum alloy, galvanized sheet material, etc. The plastic is injected in the shell in an insert injection molding mode. The thermally conductive sheet has good thermal conductivity, so that the heat of the battery body 11 can be quickly conducted to the thermosensitive elastomer.

The heat conducting fins are arranged around the cavity. For example, the heat conductive sheet includes a metal cover plate 156. A metal cover plate 156 is fitted into the lid portion 154. The metal cover plate 156 can function as an electromagnetic shield and improve the heat conduction performance of the lid portion 154.

For example, the heat conductive sheet is in contact with the thermosensitive elastomer. The extension portion 1521 is formed by extending the second connecting portion. The extension 1521 is located at an end of the cavity opposite the metal cover plate 156. The extension 1521 is in contact with the thermal elastomer, which makes the heat conduction effect better. The extension part can play the role of heat conduction, and is integrally formed with the second connecting part, so that the processing is easy.

The heat-conducting sheet is not limited to the above-described embodiments, and those skilled in the art can arrange the heat-conducting sheet according to actual needs.

In one example, as shown in fig. 3 to 4, the battery device further includes an alarm device which gives an alarm signal in a condition that the temperature of the battery body rises to the alert temperature or time, for example, the alert temperature is 38 ℃. for example, the alarm device includes an audible alarm device and a light alarm device, the audible alarm device includes a speaker 23, etc. the light alarm device includes L ED lamps 24, etc. the alarm device is connected to the control chip 22, terminals of the control chip are connected to the pads P +, P-, and PH, respectively, the resistance of the NTC is smaller as the temperature is higher, the voltage applied to the NTC is constant, so that the current at the PH terminal is different according to the temperature, and the control chip controls the speaker 23, L ED lamps 24, etc. to operate according to the magnitude of the input current.

In one application scenario, when heating is needed to kill viruses, a user turns on a microswitch to discharge the discharge circuit, when a set temperature (for example 56 ℃) is reached, a control chip sends out a control signal to enable a loudspeaker 23 to send out an alarm sound to prompt the user that the temperature reaches the virus killing temperature, the temperature is kept for 30 minutes, an L ED lamp 24 works and the like to prompt the user that the temperature is kept for a preset time, and the discharge circuit is disconnected.

By arranging the alarm device, the automatic control function of the battery device can be obviously improved, and an alarm signal can be effectively sent out.

Of course, the alarm device and the control method are not limited to the above embodiments, and those skilled in the art can select the alarm device and the control method according to actual needs.

According to another embodiment of the present disclosure, an electronic device is provided. As shown in fig. 6-7, the electronic device may be, but is not limited to, a headset, a cell phone, a tablet, a laptop, a VR device, an AR device, a smart watch, and the like. The electronic device includes a housing 21 and the self-heating virucidal battery apparatus 10 described above. The battery device 10 is located within the housing 21.

The microswitch 17 is located, for example, on the surface of the electronic device. When virus needs to be killed, a user presses the microswitch 17 to enable the discharge circuit to form a loop. The battery body 11 generates heat to kill viruses in and on the surface of the electronic device. Since the inside and the surface of the electronic device have a predetermined distance from the battery body 11, the temperature of the battery body 11 is required to be slightly higher than the temperature at which the virus (e.g., new coronavirus) is inactivated, for example, the temperature of the battery body 11 is 72 ± 5 ℃, and the temperature range can ensure that the temperature of the inside and the surface of the electronic device exceeds 56 ℃, so that the new coronavirus can be effectively killed.

The electronic equipment has the function of automatically killing viruses.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A self-heating virucidal battery device, comprising:

a battery body;

a discharge circuit forming a loop with the battery body to cause the battery body to release heat; and

and the temperature protection device is connected with the discharge circuit, and cuts off the discharge circuit when the temperature of the battery body rises to a set temperature.

2. The self-heating virucidal battery apparatus as recited in claim 1, further comprising a switching device connected in series within the discharge circuit.

3. The self-heating virucidal battery device as recited in claim 1, wherein the set temperature is greater than or equal to 72 ℃.

4. The self-heating virucidal battery apparatus as recited in claim 1, wherein said discharge circuit includes a current limiting resistive element in series with said temperature protection device.

5. The self-heating virucidal battery apparatus according to claim 1, further comprising a protection circuit module connected in parallel with the discharge circuit.

6. The self-heating virucidal battery apparatus according to claim 5, wherein the protection circuit module comprises a printed wiring board having a hollowed-out area disposed thereon, the temperature protection device being disposed within the hollowed-out area.

7. The self-heating virucidal battery device according to claim 1, wherein the temperature protection device comprises a housing, a first connecting portion, a second connecting portion, and a heat-sensitive elastic body, the first connecting portion and the second connecting portion are embedded in the housing, the heat-sensitive elastic body is located in the housing, the first connecting portion and the second connecting portion are connected in a discharge circuit, the first connecting portion has a cantilever, a free end of the cantilever contacts with the second connecting portion, the heat-sensitive elastic body is located on one side of the cantilever, and the heat-sensitive elastic body deforms to separate the free end from the second connecting portion when a set temperature is reached.

8. The self-heating virucidal battery pack as claimed in claim 1, wherein said thermal elastomer is of an arcuate configuration comprising two of said thermal elastomers stacked with their inner arcs facing each other.

9. The self-heating virucidal battery device as recited in claim 1, wherein the thermally sensitive elastomer is a thermally sensitive shape memory material or a bimetallic material.

10. The self-heating virucidal battery apparatus as claimed in claim 1, wherein a heat conductive sheet is embedded in the wall of the housing.

11. The self-heating virucidal battery pack as claimed in claim 1, wherein the temperature protection means is bonded to the battery body by a thermally conductive adhesive.

12. The self-heating virucidal battery device according to claim 1, further comprising an alarm device which gives an alarm signal on condition that the temperature of the battery body rises to an alert temperature or time.

13. An electronic device comprising a housing and the self-heating virucidal battery apparatus as claimed in any one of claims 1 to 12, said battery apparatus being located within said housing.