CN213366672U - Battery pack, case pack, and electronic device - Google Patents

Abstract

The application provides a battery pack, a housing assembly and an electronic device. The battery component comprises a battery, a heating element and a heat preservation element. The battery has a first charge rate at a preset temperature and a second charge rate below the preset temperature. Wherein the first charging rate is greater than the second charging rate. The heating member is provided in the battery or on an outer surface of the battery, and the heating member is used for heating the battery. The heat preservation part is arranged in the battery or on the outer surface of the battery, and the heat preservation part is used for keeping the temperature of the battery at a preset temperature when the heating part heats the battery or within a preset time after the heating part heats the battery. The battery pack, the shell pack and the electronic equipment can enable the battery to have high charging rate in a low-temperature environment.

Description

Battery pack, case pack, and electronic device

Technical Field

The application relates to the technical field of electronics, concretely relates to battery pack, shell assembly and electronic equipment.

Background

Lithium ion batteries are widely used in electronic devices because of their high energy density and low environmental pollution. However, in a lithium ion battery, the reaction rate in the battery is reduced in a low-temperature environment, and lithium is separated from the negative electrode in a low-temperature environment, which is likely to cause a safety problem. In the related art, in order to ensure the cycle service life of the lithium ion battery, the charging of the lithium ion battery in a low-temperature environment is realized by adopting a mode of reducing charging current. However, this method causes a problem that rapid charging cannot be achieved in a low-temperature environment and charging time increases.

SUMMERY OF THE UTILITY MODEL

The application provides a battery pack, a housing assembly and an electronic device with a high charging rate in a low-temperature environment.

In one aspect, the present application provides a battery assembly comprising:

the battery has a first charging multiplying power at a preset temperature and a second charging multiplying power at a temperature lower than the preset temperature, and the first charging multiplying power is larger than the second charging multiplying power;

the heating element is arranged in the battery or on the outer surface of the battery, and is used for heating the battery; and

the heat preservation piece, the heat preservation piece is located in the battery or locate the surface of battery, the heat preservation piece is used for the heating member is right during the battery heating, or the heating member is right in the preset time after the battery heating, keep the temperature of battery is in preset temperature.

In another aspect, the present application further provides a housing assembly, including:

the middle frame assembly is provided with a battery bin; the battery cabin is used for installing a battery, the battery has a first charging multiplying power within a preset temperature, the battery has a second charging multiplying power below the preset temperature, and the first charging multiplying power is larger than the second charging multiplying power;

a case covering the battery;

a heating element disposed within the housing or on an inner surface of the housing, the heating element for heating the battery; and

the heat preservation piece, the heat preservation piece is located in the shell or locate the internal surface of shell, the heat preservation piece is used for the heating member is right when the battery heats, or the heating member is right in the preset time after the battery heating, keep the temperature of battery is in preset temperature.

In still another aspect, the present application further provides an electronic device including the battery module or the housing module.

Through in the battery or set up the heating member at its surface, when low temperature environment needs to charge to the battery, accessible heating member heating battery makes the temperature on the battery for having the predetermined temperature of higher magnification of charging to guarantee that it can charge under the first magnification of charging of higher magnification. In addition, the heat preservation piece is arranged in the battery or on the outer surface of the battery, so that the battery can maintain the preset temperature for a certain time after being heated to the preset temperature, or the speed of temperature reduction on the battery is reduced, and the time of charging the battery at the first charging rate is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below.

Fig. 1 is an external structural schematic diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the internal structure of the electronic device shown in FIG. 1;

FIG. 3 is a schematic diagram of a battery pack of the electronic device shown in FIG. 2;

FIG. 4 is a schematic view of the heating element of FIG. 3 disposed within a battery;

fig. 5 is a schematic view showing a structure in which the heating member shown in fig. 3 is provided on the outer surface of the battery;

FIG. 6 is a schematic view of the insulating member shown in FIG. 3 disposed in a battery;

FIG. 7 is a schematic structural view of the thermal insulating member shown in FIG. 3 provided on the outer surface of the battery;

FIG. 8 is a schematic view of the heating element of FIG. 3 embedded in a thermal insulating member;

FIG. 9 is a schematic view of an alternative construction in which the heating element of FIG. 3 is embedded in a thermal insulating member;

FIG. 10 is a schematic structural view of the heating element of FIG. 3 including a substrate and a resistive layer;

FIG. 11 is a schematic view of the insulating member of FIG. 10 disposed in the gap between the plurality of conductive strips;

FIG. 12 is a schematic view of the insulating member of FIG. 10 disposed on the outer surface of a substrate and the resistive layer disposed within the substrate;

FIG. 13 is a schematic view of the thermal insulating member of FIG. 12 including a plurality of insulating particles;

FIG. 14 is a schematic view of the resistor layer and the thermal insulating member of FIG. 10 disposed on the outer surface of the substrate;

fig. 15 is a schematic structural diagram of a housing assembly in another electronic device according to an embodiment of the present application;

FIG. 16 is a schematic view of one configuration of the housing assembly of FIG. 15;

FIG. 17 is another structural schematic view of the housing assembly of FIG. 15;

fig. 18 is a schematic view of the heating and insulating member disposed within the enclosure of fig. 17.

Detailed Description

The charging speed of electronic devices such as mobile phones is often limited by the ambient temperature. When the lithium ion battery is in a low-temperature environment, the reaction speed in the battery is reduced, even the lithium precipitation of the negative electrode can occur, and the precipitated lithium dendrite penetrates through the diaphragm to cause safety problems and the like. In consideration of the fact that when the battery is charged under a low-temperature environment by using the same charging current as that under a normal-temperature environment, the discharging efficiency of the battery is low in the later use process, and the power, the service life and the safety of the battery are affected. Therefore, the charging of the lithium ion battery in the low-temperature environment is realized by adopting a mode of reducing the charging current, and although the service life and the safety of the battery are improved by the charging scheme, the problems that the quick charging in the low-temperature environment cannot be realized and the charging time is increased are also caused. Therefore, the electronic equipment with higher charging rate in a low-temperature environment is provided. In other words, the electronic device provided by the application can rapidly charge the battery in a low-temperature environment while ensuring the service life of the battery, and shortens the charging time to be equal to or approximately equal to the charging time of the electronic device in a normal-temperature environment.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

As shown in fig. 1, fig. 1 is a schematic external structural diagram of an electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 may be a device provided with a rechargeable battery, such as a mobile phone, a mobile power supply, a tablet computer, a notebook computer, an electronic book, an electronic watch, a bracelet, smart glasses, a sweeping robot, a wireless headset, a bluetooth sound, an electric toothbrush, and a rechargeable mouse. The present application takes a mobile phone as an example for explanation.

As shown in fig. 2, fig. 2 is a schematic diagram of an internal structure of the electronic device 100 shown in fig. 1. The electronic apparatus 100 includes a battery assembly 10, a temperature detector 20, and a controller 30.

As shown in fig. 3, the battery pack 10 includes a battery 101, a heating member 102 disposed in the battery 101 or on an outer surface of the battery 101, and a heat insulating member 103 disposed in the battery 101 or on an outer surface of the battery 101.

The battery 101 may be a lithium ion battery. The battery 101 has a first charge rate at a preset temperature. The battery 101 has a second charge rate below the preset temperature. Wherein the first charging rate is greater than the second charging rate. It will be appreciated that the charging time required to charge the battery 101 to its rated capacity at the first charging rate is less than the charging time required to charge the battery 101 to its rated capacity at the second charging rate. For example, the first charge rate is 1C, the second charge rate is 0.2C, the charge time required to charge the battery 101 to its rated capacity at the first charge rate is 1 hour, and the charge time required to charge the battery 101 to its rated capacity at the second charge rate is 5 hours. Wherein, for a battery 101 with a rated capacity of 600mAh, the charging current at the first charging rate is 600mA, and the charging current at the second charging rate is 120 mA. In this embodiment, the first charging rate is greater than the second charging rate, which means that the charging current at the first charging rate is greater than the charging current at the second charging rate. Of course, in other embodiments, the first charging rate being greater than the second charging rate may also be understood as the charging voltage at the first charging rate being greater than the charging voltage at the second charging rate, or the first charging rate being greater than the second charging rate may also be understood as the charging power at the first charging rate being greater than the charging power at the second charging rate. Optionally, the preset temperature is 10-30 ℃.

The heating element 102 may be an electrothermal alloy, an electrothermal material, an electrothermal wire, an electrothermal plate, an electrothermal tape, an electrothermal disk, an electrothermal couple, an electric heating ring, an electric heating rod, an electric heating core, a mica heating sheet, a ceramic heating sheet, a tungsten-molybdenum product, a silicon-carbon rod, a tungsten bar, an electric heating wire, or the like. The heating member 102 is provided inside the battery 101 or on the outer surface of the battery 101.

In one embodiment, as shown in fig. 4, the battery 101 includes a battery cell 110 and a protective casing 112. The heating element 102 is arranged between the electric core 110 and the protective shell 112, the heating element 102 is connected with the pole 120, and the pole 120 is led out to the outside of the battery 101 and is connected with an external circuit. The heating member 102 is controlled by an external circuit to heat the battery 101. In this embodiment, since the heating member 102 is located inside the battery 101, the heating speed and the heating rate are high.

In another embodiment, as shown in fig. 5, the heating member 102 is attached to the outer surface of the battery 101, for example: the heating member 102 is attached to the outer surface of the battery 101 by means of gluing, press-fitting, or the like. In other words, the heating member 102 is in direct contact with the outer surface of the battery 101. It is understood that when the heating member 102 is in direct contact with the outer surface of the battery 101, the heat on the heating member 102 can be directly conducted to the outer surface of the battery 101, thereby improving the heating efficiency and reducing the heat loss. The heating member 102 heats the battery 101 by directly connecting a circuit. In this embodiment, the heating member 102 is simple in arrangement and easy to implement. The heating member 102 is used to heat the battery 101 so that the battery 101 has a preset temperature. Therefore, when the battery 101 is charged, the battery 101 is heated to have a preset temperature by the heating member 102, and thus, the battery 101 can have a first charging rate to shorten a charging time required for charging the battery 101 to its rated capacity.

In the above embodiment, the heating member 102 is arranged to heat the battery 101, so that the battery 101 has the first charging rate, and thus the charging time required for charging the battery 101 to its rated capacity is shortened, after the heating member 102 heats the battery 101 to increase its temperature, since the electronic device 100 is still in a low-temperature environment, the heat on the battery 101 is easily dissipated, and the temperature of the battery 101 is reduced. When the temperature of the battery 101 decreases below the preset temperature in a short time, the battery 101 cannot be charged quickly. As shown in fig. 6, the heat insulating member 103 is provided in the present application, so that the battery 101 can be maintained at the preset temperature for a certain time, or the temperature of the battery 101 is decreased, thereby ensuring the charging time of the battery 101 at the first charging rate.

The heat insulating member 103 is disposed in the battery 101 or on an outer surface of the battery 101. The heat insulating member 103 is used to maintain the temperature of the battery 101 at a preset temperature when the heating member 102 heats the battery 101. The thermal insulation member 103 is made of a thermal insulation material. The insulating material may be an organic insulating material, for example: polyurethane foam, Polystyrene foam (EPS), extruded Polystyrene, phenolic foam, and the like; inorganic heat insulating materials are also available, such as: ceramic fibers, alumina, silicon carbide fibers, glass wool, and the like; of course, the heat insulating material may also be a metal heat insulating material. Optionally, the heat preservation member 103 includes any one or more of phase-change paraffin, non-accumulative hydrated salt heat storage material, molten salt phase-change heat storage material, alloy phase-change material, and the like, and the heat preservation member 103 can store heat when the battery 101 is charged and discharged, so as to conduct the heat to the battery 101 when the temperature of the battery 101 is low.

In one embodiment, as shown in fig. 6, the heat retaining member 103 is provided inside the battery 101. Specifically, the heat retaining member 103 may be disposed to conform to the inner surface of the housing of the battery 101 or integrated into the heating member 102.

In another embodiment, as shown in fig. 7, the heat retaining member 103 is provided on the outer surface of the battery 101, for example: the thermal insulating member 103 is attached to the outer surface of the battery 101 by means of gluing, pressing, or the like. The heat insulating member 103 and the heating member 102 may be disposed at a distance, stacked, or separated on different surfaces of the battery 101. Optionally, the heating element 102 is attached to the outer surface of the battery 101, and the heat-insulating element 103 is attached to the side of the heating element 102 away from the outer surface of the battery 101. In other words, the heating member 102 is in direct contact with the outer surface of the battery 101, and the insulating member 103 is in direct contact with the outer surface of the heating member 102. In this embodiment, the heating member 101 is in direct contact with the outer surface of the battery 101, and therefore the heating effect is good and the heat loss is small. In addition, the heat preservation member 103 can reduce the heat on the heating member 102 from being radiated to the side away from the battery 101 while maintaining the temperature of the battery 101, so that more heat on the heating member 102 is conducted to the battery 101, and thus the time that the temperature of the battery 101 is at the preset temperature, that is, the charging time of the battery 101 at the first charging rate can be prolonged.

The heat preservation member 103 is used for keeping the temperature of the battery 101 at a preset temperature when the heating member 102 heats the battery 101, that is, the heat preservation member 103 maintains the battery 101 at the preset temperature for a certain time or slows down the temperature reduction speed of the battery 101, so as to ensure the quick charging time of the battery 101.

As shown in fig. 7, the temperature detector 20 is provided on the battery 101. The temperature detector 20 is configured to detect a temperature of the battery 101 and send a detected temperature signal to the controller 30. One end of the controller 30 is electrically connected to the heating member 102, and the other end of the controller 30 is electrically connected to the temperature detector 20. The controller 30 is configured to receive the temperature signal and control the heating member 102 to heat the battery 101 when the temperature of the battery 101 is lower than a preset temperature.

Specifically, the temperature detector 20 is disposed in a protruding manner or a recessed manner on the outer surface of the battery 101, and is spaced apart from the heating member 102 and the heat retaining member 103. Alternatively, the temperature detector 20 is provided on a different side of the battery 101 from the heating member 102 and the heat retaining member 103. By providing the temperature detector 20 to the battery 101 so as to be in direct contact with the outer surface of the battery 101, the accuracy of the temperature signal detected by the temperature detector 20 can be improved. Further, by disposing the temperature detector 20 away from the heating member 102 and the heat retaining member 103, the temperature signal detected by the temperature detector 20 can be prevented from being affected by the temperatures on the heating member 102 and the heat retaining member 103.

The controller 30 controls the heating member 102 to heat the battery 101 may be that after the controller 30 heats the battery 101 to a preset temperature by the heating member 102, the controller controls the battery 101 to be directly charged at a first charging rate; or, the control part controls the battery 101 to be charged at a second charging rate, and simultaneously heats the battery 101, and when the temperature of the battery 101 reaches a preset temperature, controls the battery 101 to be charged at a first preset rate converted from the second preset rate. In addition, when the control member controls the heating member 102 to heat the battery 101 so that the temperature of the battery 101 reaches the preset temperature, the heating member 102 may stop heating the battery 101, at this time, the battery 101 is maintained at the preset temperature by the heat preservation function of the heat preservation member 103, at this time, the battery 101 is charged at the first charging rate, and when the temperature of the battery 101 decreases to be lower than the preset temperature, the controller 30 may control the heating member 102 to heat the battery 101 again; or, when the temperature of the battery 101 is lower than the preset temperature, the control element controls the heating element 102 to heat the battery 101 with higher power, and when the heating element 102 heats the temperature of the battery 101 to the preset temperature, the control element can be adjusted to heat the battery 101 with lower power, and at this time, the heating element 102 and the heat preservation element 103 work together to maintain the preset temperature of the battery 101, so that the battery 101 is continuously charged with the first charging rate.

By arranging the heating member 102 in the battery 101 or on the outer surface thereof, when the battery 101 needs to be charged in a low-temperature environment, the battery 101 can be heated by the heating member 102, so that the temperature of the battery 101 is at a preset temperature with a higher charging rate, and the battery can be charged at a first charging rate with the higher charging rate. In addition, by providing the heat insulating member 103 in the battery 101 or on the outer surface thereof, the battery 101 can maintain the preset temperature for a certain time after the battery 101 is heated to the preset temperature, or the speed of temperature reduction on the battery 101 is slowed down, so as to ensure the time for charging the battery 101 at the first charging rate.

Optionally, the heating member 102 is embedded in the thermal insulating member 103. In one embodiment, as shown in fig. 8, the heat insulating material 103 is a heat insulating plate. The shape of the thermal insulating member 103 may be rectangular, circular, square, or the like. The heating member 102 is disposed in the groove 130 by providing the groove 130 on the outer surface of the insulating member 103, so that the heating member 102 is embedded in the insulating member 103.

In another embodiment, as shown in fig. 9, the heating element 102 is embedded in the heat insulating member 103 by providing a double-layered heat insulating member 103, which is respectively referred to as a first sub heat insulating member 131 and a second sub heat insulating member 132, such that the heating element 102 is disposed between the first heat insulating member 131 and the second heat insulating member 132. In this embodiment, the total thickness of the heating member 102 and the heat insulating member 103 can be reduced by embedding the heating member 102 in the heat insulating member 103, so that the space occupied by the heating member 102 and the heat insulating member 103 is reduced when the heating member 102 and the heat insulating member 103 are disposed in the battery 101, and the total thickness of the battery assembly 10 can be reduced when the heating member 102 and the heat insulating member 103 are disposed on the outer surface of the battery 101.

Alternatively, as shown in FIG. 10, the heating element 102 includes a substrate 121 and a resistive layer 122 disposed within the substrate 121 or disposed on an outer surface of the substrate 121. The heat insulating member 103 is provided in the base material 121 or the heat insulating member 103 is provided on the outer surface of the base material 121. The substrate 121 may be an aluminum plastic film, a plastic film, an easy-to-tear film, or the like. The resistive layer 122 may be a conductive mesh, a conductive loop, etc. printed, adhered, coated, etched on the substrate 121.

In one embodiment, as shown in fig. 10, the resistive layer 122 and the thermal insulation member 103 are both disposed in the substrate 121. Optionally, the resistance layer 122 and the insulating layer may be stacked in the substrate 121; or the resistance layer 122 and the heat preservation member 103 are arranged in the base material 121 at intervals along the thickness direction of the base material 121; or the resistance layer 122 and the heat preservation member 103 are arranged in the base material 121 in a flush manner. When the resistive layer 122 and the thermal insulation member 103 are flush with each other in the substrate 121, the conductive strips 122a of the resistive layer 122 and the thermal insulation member 103 may be arranged in a staggered manner, a sequential manner, or the like. Specifically, referring to fig. 10 and 11, the resistive layer 122 and the heat insulating member 103 are both disposed in the substrate 121, the resistive layer 122 includes a plurality of conductive strips 122a disposed at intervals, and the heat insulating member 103 is disposed in the gaps between the plurality of conductive strips 122 a. The conductive bands 122a arranged at intervals in multiple sections may be arranged in a zigzag manner, in a transverse manner, in a longitudinal manner, in a grid manner, etc. The heat preservation member 103 is arranged in the same manner as the conductive strips 122a, and is filled in gaps among the conductive strips 122a arranged at intervals.

In another embodiment, as shown in fig. 12, the resistive layer 122 is disposed inside the substrate 121, and the heat retaining member 103 is disposed on the outer surface of the substrate 121. Optionally, the heat insulating member 103 is a heat insulating plate, and the heat insulating member 103 is adhered to or press-fitted on the outer surface of the base material 121, or the heat insulating member 103 is convexly or concavely disposed on the outer surface of the base material 121. Of course, the thermal insulation member 103 may further include a plurality of thermal insulation particles coated on the outer surface of the substrate 121.

In another embodiment, as shown in fig. 13, the resistive layer 122 is provided on the outer surface of the substrate 121, and the heat insulating material 103 is provided inside the substrate 121. Optionally, the thermal insulation member 103 is embedded in the base material 121, or the thermal insulation member 103 includes a plurality of thermal insulation particles, and the plurality of thermal insulation particles are dispersed in the base material 121, in other words, the thermal insulation material is formed by mixing the thermal insulation material with the base material 121. The resistive layer 122 may be printed on the outer surface of the substrate 121.

In another embodiment, referring to fig. 7 and 14, the resistive layer 122 and the thermal insulation member 103 are both disposed on the outer surface of the substrate 121. Optionally, the resistive layer 122 and the thermal insulation member 103 are respectively disposed on two opposite sides of the substrate 121. When the base material 121 is attached to the outer surface of the battery 101, the resistive layer 122 contacts the inner surface of the battery 101, and the heat insulating member 103 is attached to the side of the base material 121 facing away from the outer surface of the battery 101. In the present embodiment, the heat insulating member 103 may be provided near the battery 101 protection cover of the electronic apparatus 100 when the battery 101 is mounted in the electronic apparatus 100. In other words, the thermal insulation member 103 is disposed on one side of the battery 101 contacting the protection cover to prevent the temperature of the battery 101 from being dissipated to the external environment through a material with high thermal conductivity, such as a metal or glass protection cover, so that the thermal insulation effect of the thermal insulation member 103 is ensured, the arrangement of the thermal insulation member 103 is reduced, and the space inside the electronic device 100 is saved. The protective cover is a rear cover of the electronic device 100.

Optionally, the thickness of the thermal insulation member 103 is less than or equal to 2% of the thickness of the battery 101. By setting the thickness of the thermal insulating member 103 to be less than or equal to 2% of the thickness of the battery 101, it is possible to reduce the influence on the layout of the internal components of the electronic device 100 and to ensure the lightness and thinness of the electronic device 100 when the battery pack 10 is mounted in the electronic device 100.

In addition, as shown in fig. 15, the present application also provides another electronic device 200. The electronic apparatus 200 is substantially the same as the electronic apparatus 100 of the above embodiment, except that the heating member 102 and the heat retaining member 103 are provided on the housing member 2 of the electronic apparatus 200.

Specifically, the housing assembly 2 includes a center frame assembly 201, a housing 202, a heating element 102 disposed within the housing 202 or disposed on an inner surface of the housing 202, and a thermal insulating element 103 disposed within the housing 202 or disposed on an inner surface of the housing 202.

The middle frame assembly 201 is provided with a battery compartment 210 for mounting the battery 101 (refer to fig. 3). The outer case 202 cooperates with the center frame assembly 201 to cover the battery 101 for protecting the battery 101. The heating member 102 is provided in the casing 202 or on the inner surface of the casing 202, and the heating member 102 is used for heating the battery 101 mounted in the battery compartment 210 to a predetermined temperature. The heat retaining member 103 is provided in the casing 202 or on the inner surface of the casing 202. The heat insulating member 103 is used to maintain the temperature of the battery 101 at a preset temperature when the heating member 102 heats the battery 101.

By providing the heating member 102 in the housing 202 or in the inner surface thereof and making the heating member 102 correspond to the battery compartment 210 for mounting the battery 101. When the battery 101 needs to be charged in a low-temperature environment, the heating element 102 can be used for heating the battery 101, so that the temperature of the battery 101 is at a preset temperature with a higher charging rate, and the battery can be charged at a first charging rate with the higher charging rate. In addition, by arranging the heat insulating member 103 in the housing 202 or on the inner surface thereof, the battery 101 can maintain the preset temperature for a certain time after the battery 101 is heated to the preset temperature, or the speed of temperature reduction on the battery 101 is slowed down, so that the time for charging the battery 101 at the first charging rate is ensured.

Optionally, referring to fig. 15 and 16, at least one of the heating element 102 and the thermal insulation element 103 is disposed in the housing 202. In one embodiment, the thermal insulating member 103 is disposed in the housing 202, the heating member 102 is disposed on a side of the thermal insulating member 103 facing the battery compartment 210, and the heating member 102 is partially or completely protruded from an inner surface of the housing 202. Specifically, the inner surface of the housing 202 is provided with a receiving groove 220, the receiving groove 220 corresponds to the battery compartment 210 of the middle frame assembly 201, and the heat insulating member 103 is received in the receiving groove 220. The projection of the battery compartment 210 on the inner surface of the housing 202 may cover part or all of the receiving groove 220, and the heating element 102 may be adhered to the inner surface of the housing 202 and cover the opening of the receiving groove 220. In this embodiment, the opening of the heating member 102 covering the receiving groove 220 can be used for limiting the thermal insulation member 103, and at this time, the fixing structure between the thermal insulation member 103 and the housing 202 can be reduced accordingly, thereby improving the installation efficiency of the electronic device 200. By providing at least one of the heating element 102 and the thermal insulation within the housing 202, the thickness of the housing 202 may be reduced, thereby increasing the thinness of the electronic device 200.

In another embodiment, referring to fig. 17 and 18, the heating element 102 and the insulating element 103 are both disposed within the housing 202. Specifically, the inner surface of the housing 202 is provided with a receiving groove 220, the receiving groove 220 corresponds to the battery compartment 210 of the middle frame assembly 201, and the heating element 102 and the heat preservation element 103 are both received in the receiving groove 220. The heating member 102 and the heat retaining member 103 are flush with each other in the receiving groove 220. The heating member 102 includes a plurality of stages of conductive strips 122a arranged at intervals, and the heat insulating member 103 has the same structure as the heating member 102 and is filled in gaps between the plurality of stages of conductive strips 122a arranged at intervals. The side of the heating member 102 or the insulating member 103 away from the bottom wall of the receiving groove 220 is flush with the inner surface of the housing 202. The projection of the battery compartment 210 on the inner surface of the housing 202 may cover a part or all of the receiving slot 220. When the battery 101 is mounted in the battery compartment 210, the heating member 102 or the insulating member 103 may directly contact the outer surface of the battery 101. By filling the heat insulating member 103 in the gap of the heating member 102, the space occupied by the heating member 102 and the heat insulating member 103 can be reduced, the thickness of the housing 202 can be reduced, and the corresponding heat insulating effect can be achieved by using less heat insulating material.

The foregoing is a partial description of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims (12)

1. A battery assembly, comprising:

the battery has a first charging multiplying power at a preset temperature and a second charging multiplying power at a temperature lower than the preset temperature, and the first charging multiplying power is larger than the second charging multiplying power;

the heating element is arranged in the battery or on the outer surface of the battery, and is used for heating the battery; and

the heat preservation piece, the heat preservation piece is located in the battery or locate the surface of battery, the heat preservation piece is used for the heating member is right during the battery heating, or the heating member is right in the preset time after the battery heating, keep the temperature of battery is in preset temperature.

2. The battery assembly of claim 1, wherein the heating element is embedded within the insulating element.

3. The battery assembly of claim 1, wherein the heating element comprises a substrate and a resistive layer disposed within the substrate or on an outer surface of the substrate, and the insulating element is disposed within the substrate or on an outer surface of the substrate.

4. The battery pack of claim 3, wherein the resistive layer comprises a plurality of spaced apart conductive strips, and the insulating member is disposed in a gap between the plurality of conductive strips.

5. The battery assembly of claim 3, wherein the thermal insulating member comprises a plurality of thermal insulating particles, and wherein the plurality of thermal insulating particles are distributed in the substrate or the plurality of thermal insulating particles are coated on the outer surface of the substrate.

6. The battery pack of claim 3, wherein the substrate is attached to an outer surface of the battery, and the thermal insulating member is attached to a side of the substrate facing away from the outer surface of the battery.

7. The battery pack of any of claims 1-6, wherein the thermal insulator has a thickness less than or equal to 2% of the thickness of the battery.

8. A housing assembly, comprising:

the middle frame assembly is provided with a battery bin; the battery cabin is used for installing a battery, the battery has a first charging multiplying power at a preset temperature, the battery has a second charging multiplying power at a temperature lower than the preset temperature, and the first charging multiplying power is larger than the second charging multiplying power;

a case covering the battery;

a heating element disposed within the housing or on an inner surface of the housing, the heating element for heating the battery; and

the heat preservation piece, the heat preservation piece is located in the shell or locate the internal surface of shell, the heat preservation piece is used for the heating member is right when the battery heats, or the heating member is right in the preset time after the battery heating, keep the temperature of battery is in preset temperature.

9. The housing assembly of claim 8, wherein at least one of the heating element and the insulating element is disposed within the outer shell.

10. The housing assembly of claim 9 wherein the heating element comprises a substrate and a resistive layer disposed within the substrate or on an outer surface of the substrate, the resistive layer comprising a plurality of spaced apart conductive strips, the insulating element being disposed in gaps between the plurality of conductive strips.

11. An electronic device comprising a battery assembly according to any of claims 1 to 7 or a housing assembly according to any of claims 8 to 10.

12. The electronic device of claim 11, further comprising a temperature detector and a controller, wherein the temperature detector is disposed on the battery, the temperature detector is configured to detect a temperature of the battery and send the detected temperature to the controller, the controller is electrically connected to the heating element and the temperature detector, and when the temperature of the battery is lower than the preset temperature, the controller is configured to control the heating element to heat the battery.

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