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Power supply system and battery charging/discharging control method

A power supply system and battery technology, which is applied in the charging/discharging of secondary batteries, battery circuit devices, and repair/maintenance of secondary batteries, etc., can solve the problem of not being able to guarantee battery carrying, and achieve the effect of alleviating the impact and improving the overall performance.

Active Publication Date: 2010-03-10
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this reduces the charging / discharging impact on the battery, it cannot guarantee that the battery carries enough or as much power as possible when the user is in mobile office. In extreme cases, the battery may only carry 20% of the power

Method used

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  • Power supply system and battery charging/discharging control method
  • Power supply system and battery charging/discharging control method
  • Power supply system and battery charging/discharging control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] According to an embodiment of the present invention, a power supply system is firstly provided, figure 1 A block diagram of the system is given, such as figure 1 As shown, it includes: a first battery (or battery pack) 2 and a second battery (or battery pack) 4, both of which can constitute a battery pack Pack, wherein the cycle life of the first battery is longer than that of the second battery, and the cycle life of the second battery The energy or energy density of the battery is higher than that of the first battery; the switch unit 6 is connected to the first battery and the second battery; the control unit 8 is used to control the switch unit to switch between the first battery and the second battery. In this embodiment, the charge / discharge priority of the first battery is set higher than that of the second battery.

[0032] Further, as figure 1 As shown, the above-mentioned control unit 8 includes: an initialization module 80, which is used to control the swit...

Embodiment 2

[0037] According to an embodiment of the present invention, there is also provided a battery charging control method, which is used for charging the first battery (or battery pack) and the second battery (or battery pack), and for charging between the first battery and the second battery. A power supply system with a switch between them is used for battery charging control, wherein the cycle life of the first battery is longer than that of the second battery, and the battery energy or energy density of the second battery is higher than that of the first battery. The power supply system may be figure 1 or figure 2 The power supply system shown.

[0038] image 3 A flow chart of the battery charging control method according to the embodiment of the present invention is given, such as image 3 shown, including the following processing:

[0039] Step S302, connecting the charging power supply, turning on the first charging circuit formed by connecting the switch and the first ...

Embodiment 3

[0046] According to an embodiment of the present invention, there is also provided a battery discharge control method, which is used for battery discharge control of a power supply system including a first battery and a second battery, and a switch for switching between the first battery and the second battery. Discharge control, wherein the cycle life of the first battery is longer than that of the second battery, and the battery energy or energy density of the second battery is higher than that of the first battery, the power supply system may be figure 1 or figure 2 The power supply system shown.

[0047] Figure 5 A flowchart of the method is given as Figure 5 shown, including the following processing:

[0048] Step S502, disconnect the charging power supply, and turn on the first discharge circuit formed by connecting the switch and the first battery in series;

[0049] Step S504, detect in real time whether the power of the first battery is zero or less than a pred...

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PUM

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Abstract

The invention discloses a power supply system and a battery charging / discharging control method. The power supply system comprises a first battery, a second battery, a switch unit and a control unit, wherein the cycle life of the first battery is longer than that of the second battery, and the battery energy capacity or the energy density of the second battery is higher than that of the first battery; the switch unit is connected with the first battery and the second battery; and the control unit is used for controlling the switch unit to perform switching between the first battery and the second battery. The power supply system and the battery charging / discharging control method can effectively relieve the impacts on battery packs caused by frequent charging / discharging, thereby improving the overall performance of the battery packs.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a power supply system and a battery charging / discharging control method. Background technique [0002] At present, notebook computers have become one of the necessary equipment for office workers. Most of the batteries used in notebooks are lithium cobalt oxide battery packs (Pack), and the shapes of lithium-ion batteries mainly include cylindrical batteries and There are two types of square batteries. According to the design of the specific laptop battery compartment, several battery packs can be designed, including a combination of pure cylindrical batteries, a combination of pure square batteries, and a combination of cylindrical and square batteries. [0003] According to the current design of the battery Pack, for the combination of pure cylindrical batteries and pure square batteries, all the batteries are charged / discharged at the same time, while the mixed combination of circular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/12Y02E60/10
Inventor 于海峰
Owner LENOVO (BEIJING) LTD
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