Battery device and electric appliance

Abstract

The embodiment of the application provides a battery device and a power consumption equipment, and belongs to the technical field of batteries. The battery device comprises: a main battery pack, which is used for supplying power to the power consumption equipment; and an auxiliary battery pack, which is electrically connected with the main battery pack; the auxiliary battery pack is configured to supply power to the main battery pack when the voltage of the main battery pack is less than a preset voltage and lasts for a preset time, so that the voltage of the main battery pack is greater than or equal to the preset voltage. The performance of the battery device which is long-term placed or not charged can be effectively ensured by preventing the main battery pack from being in a low-voltage state for a long time and causing the air inflation.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and electrical equipment. Background Technology

[0002] The battery can be recharged after being discharged, achieving charge-discharge cycles for repeated use.

[0003] In existing technology, the voltage of a battery changes as it is charged and discharged. Specifically, the voltage gradually decreases when the battery discharges, and increases again when it is charged. In some cases, the battery is almost completely depleted but cannot be recharged in time, leaving it in a low-voltage state for an extended period.

[0004] However, if the battery is kept under low pressure for a long time, it will swell and cause irreversible damage to the battery performance. Utility Model Content

[0005] This application provides a battery device and electrical equipment to prevent the battery from being in a low-pressure state for a long time, which would cause it to swell and affect its performance.

[0006] In a first aspect, embodiments of this application provide a battery device, including:

[0007] The main battery pack is used to power electrical equipment.

[0008] Auxiliary battery pack, which is electrically connected to the main battery pack;

[0009] The auxiliary battery pack is configured to supply power to the main battery pack when the voltage of the main battery pack is lower than a preset voltage for a preset time, so that the voltage of the main battery pack is greater than or equal to the preset voltage.

[0010] In one possible implementation, the battery device provided in this application embodiment further includes a control component, which is electrically connected to the main battery pack and the auxiliary battery pack.

[0011] The control component is configured to control the auxiliary battery pack to supply power to the main battery pack when the voltage of the main battery pack is less than a preset voltage for a preset time, and to control the auxiliary battery pack to stop supplying power when the voltage of the main battery pack is greater than or equal to the preset voltage.

[0012] In one possible implementation, the battery device provided in this application includes a control component comprising:

[0013] The controller is electrically connected to the main battery pack and the auxiliary battery pack.

[0014] The detection device is electrically connected to the main battery pack and the controller. The detection device is used to detect the voltage of the main battery pack.

[0015] The timing element is electrically connected to the controller and the detection element;

[0016] The controller is configured to start timing when the detector detects that the voltage of the main battery pack is less than a preset voltage, and to control the auxiliary battery pack to supply power to the main battery pack when the timing pack has been timing for a preset time. Furthermore, the controller is configured to stop supplying power to the auxiliary battery pack when the detector detects that the voltage of the main battery pack is greater than or equal to a preset voltage.

[0017] In one possible implementation, the battery device provided in this application embodiment further includes a charging circuit connected to the main battery pack and the auxiliary battery pack. The charging circuit is used to connect to an external power source to charge at least one of the main battery pack and the auxiliary battery pack.

[0018] In one possible implementation, the battery device provided in this application includes a charging circuit comprising:

[0019] The first sub-charging circuit is connected to the main battery pack and is used to connect to an external power source to charge the main battery pack.

[0020] The second sub-charging circuit is connected to the auxiliary battery pack and is used to connect to an external power source to charge the auxiliary battery pack.

[0021] In one possible implementation, the battery device provided in this application embodiment has a main battery pack as a silicon anode lithium battery pack.

[0022] In one possible implementation, the battery device provided in this application embodiment has a silicon-based content of 10% or more and less than or equal to 100% in the silicon anode battery pack.

[0023] In one possible implementation, the battery device provided in this application embodiment has a preset voltage greater than or equal to 2.5V and less than or equal to 3.4V.

[0024] In one possible implementation, the battery device provided in this application embodiment has a preset time of greater than or equal to 6 hours and less than or equal to 24 hours.

[0025] In one possible implementation, the battery device provided in this application embodiment includes an auxiliary battery pack comprising at least one of lithium cobalt oxide / graphite battery, lithium iron phosphate / graphite battery, and ternary cathode / graphite battery.

[0026] Secondly, embodiments of this application provide an electrical device, including a device body and any of the aforementioned battery devices disposed on the device body.

[0027] The battery device and electrical equipment provided in this application embodiment include a main battery pack and an auxiliary battery pack electrically connected to the main battery pack. The main battery pack supplies power to the electrical equipment. When the main battery pack discharges to a voltage lower than a preset voltage and remains discharged for a preset time, the auxiliary battery pack is activated to supply power to the main battery pack, ensuring that the voltage of the main battery pack is higher than or equal to the preset voltage. Therefore, the battery device provided in this application embodiment does not require long-term inactivity or failure to recharge after discharge, eliminating concerns about the main battery pack being chronically underpowered and unable to function properly or be recharged. This prevents the main battery pack from bulging due to prolonged low voltage, effectively ensuring the performance of the battery device even after long-term storage or without charging. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0029] Figure 1 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100 - Main battery pack;

[0032] 200-Auxiliary battery pack.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the absence of conflict, the following embodiments and features can be combined with each other.

[0035] In existing technology, the voltage of a battery changes as it is charged and discharged. Specifically, the voltage gradually decreases when the battery discharges, and increases again when it is charged. In some cases, the battery is almost completely depleted but cannot be recharged in time, leaving it in a low-voltage state for an extended period.

[0036] However, prolonged exposure to low pressure can cause the electrolyte to decompose, producing gas and increasing internal pressure, leading to bulging. Furthermore, for some lithium batteries, such as silicon anode batteries, prolonged low pressure can cause the silicon-based anode to undergo alloying during lithium insertion / extraction, resulting in battery volume expansion and irreversible damage to battery performance.

[0037] To overcome the deficiencies in the prior art, the battery device and electrical equipment provided in this application embodiment include a main battery pack and an auxiliary battery pack electrically connected to the main battery pack. The main battery pack supplies power to the electrical equipment. When the main battery pack discharges to a voltage lower than a preset voltage and remains discharged for a preset time, the auxiliary battery pack is activated to supply power to the main battery pack, ensuring that the voltage of the main battery pack is higher than or equal to the preset voltage. Therefore, the battery device provided in this application embodiment does not require long-term inactivity or failure to recharge after discharge, eliminating concerns about the main battery pack being chronically underpowered and unable to function properly or be recharged. This prevents the main battery pack from bulging due to prolonged low voltage, effectively ensuring the performance of the battery device even after long-term storage or without charging.

[0038] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0039] Reference Figure 1 As shown, this application provides a battery device, including:

[0040] Main battery pack 100, which is used to supply power to electrical equipment;

[0041] Auxiliary battery pack 200 is electrically connected to main battery pack 100;

[0042] The auxiliary battery pack 200 is configured to supply power to the main battery pack 100 when the voltage of the main battery pack 100 is less than a preset voltage for a preset time, so that the voltage of the main battery pack 100 is greater than or equal to the preset voltage.

[0043] It is understandable that in the battery device, only the main battery pack 100 can be electrically connected to the electrical device and supply power to it, while the auxiliary battery pack 200 never participates in supplying power to the electrical device. Therefore, the main battery pack 100 needs to have a high energy density.

[0044] The auxiliary battery pack 200 is electrically connected to the main battery pack 100. Specifically, the auxiliary battery pack 200 is connected in parallel with the main battery pack 100 through an external circuit. That is, the negative terminal of the auxiliary battery pack 200 is electrically connected to the negative terminal of the main battery pack 100, and the positive terminal of the auxiliary battery pack 200 is electrically connected to the positive terminal of the main battery pack 100, thereby ensuring that the auxiliary battery pack 200 can stably supply power to the main battery pack 100.

[0045] Therefore, when the electrical equipment is running, the battery continuously supplies power to the equipment, causing the main battery pack 100 to continuously discharge, resulting in a decrease in charge and voltage. In some cases, after the electrical equipment stops operating, it is not recharged in time, causing the main battery pack 100 to remain in a low-voltage state. Alternatively, after the electrical equipment is charged and then left unused for a long time, the main battery pack 100 will gradually lose charge and be depleted due to spontaneous chemical reactions within it, causing its voltage to gradually drop to a low-voltage state. If the main battery pack 100 remains in a low-voltage state for a long time without being recharged in time, it is prone to bulging and swelling.

[0046] To address this, the auxiliary battery pack 200 installed within the battery device can automatically activate itself and supply power to the main battery pack 100 when the main battery pack 100 remains in a low-voltage state for a period of time, thereby removing the main battery from the low-voltage state and preventing irreversible damage caused by the main battery pack 100 bulging and expanding.

[0047] Therefore, the battery device provided in this application embodiment provides a main battery pack 100 and an auxiliary battery pack 200 electrically connected to the main battery pack 100, so that the main battery pack 100 supplies power to the electrical device. When the main battery pack 100 discharges to a voltage lower than a preset voltage and continues for a preset time, the auxiliary battery pack 200 can be activated to supply power to the main battery pack 100, so that the voltage of the main battery pack 100 can be higher than or equal to the preset voltage.

[0048] Therefore, when the battery device provided in this application embodiment is not used for a long time or is not charged in time after discharge, there is no need to worry about the main battery pack 100 being unable to be used or charged due to long-term lack of power. This prevents the main battery pack 100 from being in a low-pressure state for a long time, causing it to bulge and expand, thereby effectively ensuring the performance of the battery device that has been stored for a long time or has not been charged.

[0049] In some embodiments, the battery device provided in this application further includes a control component, which is electrically connected to the main battery pack 100 and the auxiliary battery pack 200.

[0050] The control component is configured to control the auxiliary battery pack 200 to supply power to the main battery pack 100 when the voltage of the main battery pack 100 is less than a preset voltage for a preset time, and to control the auxiliary battery pack 200 to stop supplying power when the voltage of the main battery pack 100 is greater than or equal to the preset voltage.

[0051] It is understandable that by setting up control components, the process of auxiliary battery pack 200 starting to supply power to main battery pack 100 can be more precisely controlled, realizing the intelligence and automation of the battery device without human intervention, thereby improving the stability and reliability of the battery device.

[0052] Furthermore, the control components effectively ensure the voltage stability of the main battery pack 100. When the voltage of the main battery pack 100 rises above or equals the preset voltage under the power supply of the auxiliary battery pack 200, the power supply of the auxiliary battery pack 200 can be stopped to avoid overcharging of the main battery pack 100.

[0053] In other embodiments, the auxiliary battery pack 200 may be configured to charge the main battery pack 100 to a voltage value higher than a preset voltage and then stop supplying power. This application does not limit the upper limit voltage of the auxiliary battery pack 200 supplying power to the main battery pack 100.

[0054] Furthermore, the control components include:

[0055] The controller is electrically connected to the main battery pack 100 and the auxiliary battery pack 200.

[0056] The detection device is electrically connected to the main battery pack 100 and to the controller. The detection device is used to detect the voltage of the main battery pack 100.

[0057] The timing element is electrically connected to the controller and the detection element;

[0058] The controller is configured to start timing when the detector detects that the voltage of the main battery pack 100 is less than a preset voltage, and to control the auxiliary battery pack 200 to supply power to the main battery pack 100 when the timing time is set for a preset time. Furthermore, the controller is configured to stop supplying power to the auxiliary battery pack 200 when the detector detects that the voltage of the main battery pack 100 is greater than or equal to a preset voltage.

[0059] Understandably, the controller is electrically connected to the main battery pack 100 and the auxiliary battery pack 200 respectively, thereby achieving a reliable electrical connection between the main battery pack 100 and the auxiliary battery pack 200.

[0060] For this purpose, the controller can be a PCB circuit board with integrated control elements, which has a simple structure and is easy to control for the auxiliary battery pack 200.

[0061] By setting up detection devices, the voltage of the main battery pack 100 can be monitored in real time, and changes in voltage can be detected in a timely manner. This provides a reliable basis for the subsequent activation control of the auxiliary battery pack 200.

[0062] For example, the detection element may be configured as a voltage sensor, and this application does not limit the specific type of voltage sensor.

[0063] The timing device can accurately keep time. It starts timing after the detection device detects that the voltage of the main battery pack 100 is lower than the preset voltage, and only controls the auxiliary battery pack 200 to supply power when the preset time is reached. This avoids the auxiliary battery pack 200 from being accidentally triggered to supply power due to short voltage fluctuations, thus improving the stability and reliability of the control. It can also reserve sufficient charging intervals to avoid unnecessary power supply to the auxiliary battery pack 200, extend the charging or replacement cycle of the auxiliary battery pack 200, and make it more convenient to use.

[0064] In this regard, the timing element can be set as a separate timer or as a timing circuit integrated into a PCB circuit board; this application does not impose any restrictions on this.

[0065] Furthermore, in some embodiments, the battery device provided in this application further includes a charging circuit connected to the main battery pack 100 and the auxiliary battery pack 200. The charging circuit is used to connect to an external power source to charge at least one of the main battery pack 100 and the auxiliary battery pack 200.

[0066] It is understandable that by setting up a charging circuit to charge at least one of the main battery pack 100 and the auxiliary battery pack 200, not only can the main battery pack 100 be charged, but the auxiliary battery pack 200 can also be charged within the battery device, thereby further extending the battery device's lifespan and range.

[0067] The charging circuit includes:

[0068] The first sub-charging circuit is connected to the main battery pack 100 and is used to connect to an external power source to charge the main battery pack 100.

[0069] The second sub-charging circuit is connected to the auxiliary battery pack 200 and is used to connect to an external power source to charge the auxiliary battery pack 200.

[0070] It is understandable that the charging circuit includes a first sub-charging circuit and a second sub-charging circuit, which can independently control and manage the charging of the main battery pack 100 and the auxiliary battery pack 200. This allows for precise control based on parameters such as the voltage and capacity of the main battery pack 100 and the auxiliary battery pack 200, preventing mutual interference between them during charging. It also allows charging to be performed only on the main battery pack 100 or the auxiliary battery pack 200, thereby improving the flexibility and reliability of the battery device's charging process.

[0071] In addition, in some embodiments, the charging circuit can be configured to charge only the main battery pack 100, while the auxiliary battery pack 200 is set to be replaceable. When the auxiliary battery pack 200 has a low charge, it can be directly replaced with another auxiliary battery pack 200 with a full charge, avoiding the vacuum period of protection of the main battery pack 100 by the auxiliary battery pack 200. The replaced auxiliary battery pack 200 can be charged separately. This application does not limit this.

[0072] Furthermore, a detection device connected to the controller can be installed on the auxiliary battery pack 200 to detect the voltage of the auxiliary battery pack 200. When the auxiliary battery pack 200 is in a low voltage state, the controller will send a prompt signal in a timely manner to replace or charge the auxiliary battery pack 200, thus ensuring the protection effect of the auxiliary battery pack 200 on the main battery pack 100.

[0073] In practice, the main battery pack 100 is a silicon anode lithium battery pack.

[0074] It is understandable that silicon anode lithium batteries have higher energy density than graphite anode lithium battery packs, and their volume changes more during charging and discharging, making them more prone to expansion. Therefore, setting the main battery pack 100 to be a silicon anode lithium battery can make the battery device have a longer range and better performance, and can also give full play to the effect of the auxiliary battery pack 200 in suppressing the expansion of the main battery pack 100.

[0075] In other embodiments, the main battery pack 100 may also be configured as a graphite negative electrode lithium battery, or even a lead-acid battery, etc., and this application does not limit it.

[0076] Among them, the silicon content of the silicon anode battery pack is greater than or equal to 10% and less than or equal to 100%.

[0077] It is understood that such a configuration can broaden the applicability of the battery device in this application embodiment and make its application more flexible.

[0078] While increasing the silicon content of silicon anode batteries can significantly improve energy density, it also increases the battery's volume expansion during charging and discharging. Therefore, silicon anode batteries are typically set with a silicon content of around 10% to 30%. This achieves a relatively high specific capacity while effectively controlling the negative impacts of volume changes, thus striking a good balance between performance and stability, and saving on battery material costs.

[0079] Furthermore, the preset voltage is greater than or equal to 2.5V and less than or equal to 3.4V.

[0080] It is understandable that the expansion voltage of the main battery pack 100 will vary depending on the silicon content of the main battery pack 100. Under normal circumstances, the preset voltage range is 2.5V to 3.4V.

[0081] For example, depending on the silicon content or chemical system of the main battery pack 100, the preset voltage for the expansion protection of the main battery pack 100 may be set to 2.5V, 2.7V, 3.0V, 3.2V or 3.4V, etc., and this application does not limit it.

[0082] Specifically, the preset voltage for swelling protection of silicon anode lithium battery packs is positively correlated with the silicon content.

[0083] Furthermore, the battery device provided in this application embodiment has a preset time of 6 hours or more and 24 hours or less.

[0084] It is understandable that setting the preset time to 6 to 24 hours allows sufficient charging intervals for the battery device. If the main battery pack 100 is in a low-voltage state and is charged in time before the preset time is reached, the auxiliary battery pack 200 does not need to be activated, making the battery device more convenient to use and avoiding frequent activation of the auxiliary battery pack 200.

[0085] Similarly, the preset time for the expansion protection of the main battery pack 100 can be set to 6 hours, 8 hours, 10 hours, 14 hours, 18 hours or 24 hours, depending on the silicon content or chemical system of the main battery pack 100. This application does not impose any restrictions on this.

[0086] Specifically, the preset time for swelling protection of silicon anode lithium battery packs is also positively correlated with the silicon content.

[0087] Furthermore, in some embodiments, the auxiliary battery pack 200 includes at least one of lithium cobalt oxide / graphite battery, lithium iron phosphate / graphite battery, and ternary cathode / graphite battery.

[0088] It is understandable that setting the auxiliary battery pack 200 as the aforementioned graphite negative electrode battery can reduce the cost of the auxiliary battery pack 200 while ensuring sufficient energy intensity.

[0089] In other embodiments, the auxiliary battery pack 200 may also be configured as a graphite battery, or even a lead-acid battery or a capacitor of other systems, and this application does not limit this.

[0090] This application also provides an electrical device, including a device body and a battery device disposed on the device body according to any of the above embodiments.

[0091] The battery device has been described in detail in the above embodiments and will not be repeated here.

[0092] The electrical device provided in this application embodiment is equipped with a battery device. The battery device is equipped with a main battery pack 100 and an auxiliary battery pack 200 electrically connected to the main battery pack 100. The main battery pack 100 supplies power to the electrical device. When the main battery pack 100 discharges to a voltage lower than a preset voltage and continues for a preset time, the auxiliary battery pack 200 can be activated to supply power to the main battery pack 100, so that the voltage of the main battery pack 100 can be higher than or equal to the preset voltage.

[0093] Therefore, when the battery device provided in this application embodiment is not used for a long time or is not charged in time after discharge, there is no need to worry about the main battery pack 100 being unable to be used or charged due to long-term lack of power. This prevents the main battery pack 100 from being in a low-pressure state for a long time, causing it to bulge and expand, thereby effectively ensuring the performance of the battery device that has been stored for a long time or has not been charged.

[0094] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0095] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0096] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0097] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery device, characterized in that, include: A main battery pack (100) is used to supply power to electrical equipment; An auxiliary battery pack (200) is electrically connected to the main battery pack (100); The auxiliary battery pack (200) is configured to supply power to the main battery pack (100) when the voltage of the main battery pack (100) is less than a preset voltage for a preset time, so that the voltage of the main battery pack (100) is greater than or equal to the preset voltage.

2. The battery device according to claim 1, characterized in that, It also includes a control component electrically connected to the main battery pack (100) and the auxiliary battery pack (200). The control component is configured to control the auxiliary battery pack (200) to supply power to the main battery pack (100) when the voltage of the main battery pack (100) is less than a preset voltage and lasts for a preset time, and to control the auxiliary battery pack (200) to stop supplying power when the voltage of the main battery pack (100) is greater than or equal to the preset voltage.

3. The battery device according to claim 2, characterized in that, The control component includes: A controller electrically connected to the main battery pack (100) and the auxiliary battery pack (200). A detection element, which is electrically connected to the main battery pack (100) and the controller, is used to detect the voltage of the main battery pack (100); A timing element, which is electrically connected to the controller and the detection element; The controller is configured to, when the detector detects that the voltage of the main battery pack (100) is less than the preset voltage, control the timing device to start timing, and when the timing device has been timing for a preset time, control the auxiliary battery pack (200) to supply power to the main battery pack (100), and when the detector detects that the voltage of the main battery pack (100) is greater than or equal to the preset voltage, control the auxiliary battery pack (200) to stop supplying power.

4. The battery device according to claim 1, characterized in that, It also includes a charging circuit connected to the main battery pack (100) and the auxiliary battery pack (200), the charging circuit being used to connect to an external power source to charge at least one of the main battery pack (100) and the auxiliary battery pack (200).

5. The battery device according to claim 4, characterized in that, The charging circuit includes: A first sub-charging circuit is connected to the main battery pack (100) and is used to connect to the external power source to charge the main battery pack (100). The second sub-charging circuit is connected to the auxiliary battery pack (200) and is used to connect to the external power source to charge the auxiliary battery pack (200).

6. The battery device according to any one of claims 1-5, characterized in that, The main battery pack (100) is a silicon anode lithium battery pack.

7. The battery device according to claim 6, characterized in that, The preset voltage is greater than or equal to 2.5V and less than or equal to 3.4V.

8. The battery device according to any one of claims 1-5, characterized in that, The preset time is greater than or equal to 6 hours and less than or equal to 24 hours.

9. The battery device according to any one of claims 1-5, characterized in that, The auxiliary battery pack (200) includes at least one of lithium cobalt oxide / graphite battery, lithium iron phosphate / graphite battery, and ternary cathode / graphite battery.

10. An electrical appliance, characterized in that, It includes a device body and a battery device disposed on the device body as described in any one of claims 1-9.

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