WO2015039583A1

WO2015039583A1 - Universal rechargeable battery constituted by employing lithium-ion battery and control method

Info

Publication number: WO2015039583A1
Application number: PCT/CN2014/086369
Authority: WO
Inventors: 李松
Original assignee: 李松
Priority date: 2013-09-23
Filing date: 2014-09-12
Publication date: 2015-03-26
Also published as: CN105140432B; CN105140432A; CN103490112B; CN103490112A

Abstract

A universal rechargeable battery constituted by employing a lithium-ion battery and a control method for the rechargeable battery. The universal rechargeable battery constituted by employing the lithium-ion battery comprises: an outer packaging housing and, sequentially laminated and assembled within the outer packaging housing, a charging/discharging controller, a positive electrode solder piece, a lithium-ion battery, and a negative electrode end cap. The charging/discharging controller comprises: a charging/discharging controller housing and, arranged within the charging/discharging controller housing, a charging/discharging control circuit solder body and a charging/discharging controller support frame. The charging/discharging control circuit solder body is soldered to a lithium-ion battery charging/discharging control circuit. The lithium-ion battery charging/discharging control circuit comprises: a lithium-ion battery charging control circuit, a lithium-ion battery detection circuit, and a DC-DC step-down regulator discharging circuit that are soldered onto a circuit substrate and electrically connected respectively to the lithium-ion battery, to a positive electrode end cap, and to the negative electrode end cap via the charging/discharging controller housing and the outer packaging housing.

Description

Universal rechargeable battery composed of lithium ion battery and control method thereof

Technical field

The present invention relates to the field of secondary battery or electronic power supply technology, and in particular, to a universal rechargeable battery and a control method using the lithium ion battery.

Background technique

A lithium ion secondary battery (hereinafter referred to as a lithium ion battery) has the advantages of large specific energy, rapid charge and discharge, long cycle life, small self-discharge, no pollution, no memory effect, etc., and is currently replacing a general-purpose primary battery and nickel-hydrogen. An ideal secondary battery for rechargeable batteries. However, the output voltage of the existing lithium ion battery is relatively high, and the output voltage varies with the use of the positive electrode system. Currently, the commercial lithium ion battery has a nominal voltage of 3.2V to 3.8V, and with lithium. With the development of ion battery technology, the nominal voltage of lithium-ion batteries will also increase. It is obvious that lithium-ion batteries cannot be directly used to replace general-purpose batteries with a nominal voltage of 1.5V and nickel-metal hydride rechargeable batteries with a nominal voltage of 1.2V.

Although lithium-ion batteries have good charge and discharge performance, they have problems such as poor over-charging and over-discharge resistance, poor charging and over-heating resistance, and poor aging and damage of lithium-ion batteries. If it is heavy, it will cause burning or even explosion. Therefore, it must be controlled in strict accordance with the charging and discharging technical conditions of the lithium ion battery.

At present, there are four main types of mature lithium-ion battery structure packaging processes: first, a negative-capacity lithium-ion battery (usually in a steel casing) that is connected by a negative current collector and an outer casing; and second, a positive electrode set is adopted. a positive-packaged lithium-ion battery (usually in an aluminum casing) that is connected to the outer casing of the fluid; and a quasi-insulating lithium-ion battery (usually packaged in an aluminum-plastic composite film material) in a soft-packed casing; The outer casing is made of an insulating and encapsulating lithium-ion battery (usually packaged in polypropylene and polyethylene).

Since general-purpose primary batteries and nickel-metal hydride rechargeable batteries have a long history of application and have been standardized, in many general-purpose battery applications, methods have been developed to detect low battery voltages from battery output voltages, such as digital cameras, MP3, MP4, and electronics. Intelligent locks, electronic instruments and other electronic devices use the method of detecting the real-time output voltage of the battery to determine the low battery state of the battery.

In addition, the popularity of personal computers, tablets and mobile phones has been very high. The rechargeable battery uses a computer USB interface and a universal lithium-ion battery charging adapter as a charging power source, which can reduce the cost of purchase and save social resources.

In response to the above problems, the Chinese Patent Office has published a patent application with a patent application number of 201110219892.0 (a rechargeable battery composed of a lithium ion battery and a control method), which is constructed by encapsulating a lithium ion battery and a discharge control circuit. Universal rechargeable battery. It has the following features and insufficient performance issues:

First, the rechargeable battery does not have lithium ion battery charging control and charging overheat protection

Since the lithium ion battery charging control and the overheat protection circuit are not provided inside the rechargeable battery, it is necessary to take an access diode to isolate the charging and discharging circuit during charging, and use a dedicated lithium ion battery charging control circuit and a temperature sensing circuit. Set the charging device to charge. Therefore, the following technical performance defects exist: First, the forward voltage drop of the diode during charging varies with the operating current and temperature, which reduces the detection and charging control accuracy of the charging control circuit for the lithium ion battery, and the diode is guided. When the voltage drop is high, there is a problem that the lithium ion battery cannot be fully charged. When the diode forward voltage drop is low, the lithium ion battery overcharge problem is easily generated, and the charging performance and safety of the lithium ion battery are lowered; Since the charging circuit is connected to the isolation diode, the charging input voltage of the rechargeable battery is raised. Since the upper limit voltage of the existing lithium-lithium battery of the lithium-lithium system has reached 4.35V and will increase in the future, if the nominal voltage is 5V± The 0.25V existing universal lithium-ion battery charging adapter or computer USB interface charges the rechargeable battery, even with a Schottky device with a low forward voltage drop, the lower limit of the charging input voltage and the upper limit of the isolation diode's conduction voltage drop. Under the circumstance, there is still a problem that the lithium ion battery cannot be fully charged, although the boosting power can be used in the external charging device. Solve this problem, but it will cause problems such as rising cost of the charging device, lower efficiency and reliability; Thirdly, the external temperature sensing circuit can only indirectly detect the temperature of the lithium ion battery through the outer package housing or electrode of the rechargeable battery, reducing Lithium-ion battery charging temperature detection accuracy, so that the rechargeable battery has a problem that the lithium-ion battery is overheated to reduce cycle life and safety.

Second, the rechargeable battery does not have lithium ion battery discharge overheat protection

The lithium ion battery temperature sensing and control circuit is not installed inside the rechargeable battery, so that the rechargeable battery does not have the overheat protection function of the lithium ion battery discharge process, so that the lithium ion battery temperature exceeds when the rechargeable battery is discharged at a high rate in a high temperature environment. The risk of an upper working temperature, and thus there is a problem of reducing the cycle life and safety of the lithium ion battery.

Third, the charge and discharge controller structure and assembly process are complex

The circuit connection between the negative electrode of the charge and discharge controller and the rechargeable battery package housing adopts a radial elastic compression connection structure. When the rechargeable battery is assembled, the elastic negative electrode must be pressed down in the radial direction to be charged. The discharge controller is pushed into the package housing of the rechargeable battery. In addition, the elastic negative electrode is a movable component, and its structure occupies a large internal space of the charge and discharge controller, and makes it difficult for the charge and discharge controller to achieve sealing. The charging and discharging controller is bulky and the manufacturing process is complicated. The difficulty is high, it is not conducive to automated mass production assembly, and waterproof sealing cannot be realized. Therefore, there is a problem that the rechargeable battery has low storage capacity, high production cost, and is liable to cause circuit failure after being wetted and immersed in water.

Fourth, the reliability of the connection between the charge and discharge controller and the positive electrode of the lithium ion battery is poor.

The charging and discharging controller for R20 rechargeable battery and R14 rechargeable battery is connected with the positive electrode of lithium ion battery by elastic crimping. Because the contact surface between the electrodes is limited by space, it is easy to generate contact when the rechargeable battery is charged and discharged at high current. Point ablation. Contact ablation oxidation will cause the internal resistance of the rechargeable battery system to rise, the heat generated during charging and discharging will increase the operating temperature of the rechargeable battery, and in severe cases, an open circuit will cause the rechargeable battery to fail.

Summary of the invention

The object of the present invention is to provide a universal rechargeable battery comprising a lithium ion battery, which has a regulated output of 1.5V and a regulated output of 1.1V when the lithium ion battery is low, and can be charged by a computer USB interface or a universal lithium ion battery. The adapter is charged with its body structure and discharge performance in accordance with GB/T 8897.2-2013 and IEC 60086-2 technical specifications, which can directly replace the existing general-purpose primary battery and nickel-hydrogen rechargeable battery, and its charging controller and lithium-ion battery It is assembled in the same outer package by press-fit and the two are connected by positive electrode pads to prevent contact ablation during high current charging and discharging, and improve the reliability of the connection between the charge controller and the positive electrode of the lithium ion battery; The discharge controller structure and assembly process are simple, which is conducive to automated mass production assembly. The controller housing is used as the electrode structure of the lithium ion battery negative electrode to connect to the lithium ion battery charge and discharge control circuit, which saves the internal space of the large charge and discharge controller. Eliminates the moving parts that hinder the sealing of the charge and discharge controller, and realizes the waterproof sealing of the charge and discharge controller to prevent The problem of circuit failure after tidal and water immersion is beneficial to improve the storage capacity of the universal rechargeable battery and reduce the production cost. At the same time, the charge and discharge controller is equipped with a lithium ion battery charging control circuit, a lithium ion battery detection circuit and a DC-DC buck type. The regulated discharge circuit has a high-precision temperature detection function, which realizes the control and protection of the charging and discharging process of the lithium ion battery, and improves the cycle life and safety of the lithium ion battery.

Another object of the present invention is to provide a control method for a universal rechargeable battery using a lithium ion battery, and to provide a lithium ion battery charging control circuit and a lithium ion battery according to the charging and discharging working technical conditions required for the lithium ion battery. Detection circuit and DC-DC step-down voltage regulator discharge circuit, control and protect the charging and discharging process of lithium ion battery, realize overcharge protection, over discharge protection, charge and discharge rate protection and charge and discharge of lithium ion battery Overheat protection improves the cycle life and safety of lithium-ion batteries, achieving a regulated output of 1.5V for general-purpose rechargeable batteries and 1.1V for regulated output when lithium-ion batteries are low. The USB interface or the universal lithium-ion battery charging adapter charges the universal rechargeable battery, and realizes the general-purpose rechargeable battery structure and discharge performance in accordance with GB/T 8897.2-2013 and IEC 60086-2 technical specifications, so that the lithium-ion battery is used. The universal rechargeable battery can directly replace the existing general-purpose primary battery and nickel-hydrogen rechargeable battery, and comprehensively improve the performance of the universal rechargeable battery.

In order to achieve the above object, the present invention provides a universal rechargeable battery comprising a lithium ion battery, comprising: an outer package housing, and a charge and discharge controller, a positive electrode solder tab, and a lithium ion which are sequentially assembled and assembled in the outer package housing. a battery and a negative end cap; the charge and discharge controller includes: a charge and discharge controller housing, and a charge and discharge control circuit soldering body, a charge and discharge controller bracket disposed in the charge and discharge controller housing, the charge and discharge The control circuit welding body is equipped with a lithium ion battery charge and discharge control circuit, and the positive electrode of the lithium ion battery is connected to the lithium ion battery charge and discharge control circuit through a positive electrode soldering piece, and the lithium ion battery charge and discharge control circuit includes: welding a lithium ion battery charging control circuit, a lithium ion battery detecting circuit, and a lithium ion battery, a positive electrode end cover, and a lithium ion battery charging control circuit electrically connected to the negative electrode end cover through the charging and discharging controller housing and the outer package housing, respectively And DC-DC step-down regulator discharge circuit.

The invention also provides a control method for a general-purpose rechargeable battery comprising a lithium ion battery, wherein the universal rechargeable battery comprising the lithium ion battery comprises: an outer package shell, and the charge and discharge assembled in the outer package shell in sequence a controller, a positive electrode soldering piece, a lithium ion battery, and a negative electrode end cover; the charge and discharge controller includes: a charging and discharging controller housing, and a charging and discharging control circuit soldering body and a charging device disposed in the charging and discharging controller housing The discharge controller bracket, the charge and discharge control circuit is soldered to the lithium ion battery charge and discharge control circuit, and the lithium ion battery charge and discharge control circuit comprises: soldering on the circuit substrate and respectively corresponding to the lithium ion battery and the positive terminal a lid, and a lithium ion battery charging control circuit electrically connected to the negative end cap through the charging and discharging controller housing and the outer package housing, a lithium ion battery detecting circuit, and a DC-DC buck type voltage stabilizing discharging circuit;

The charging and discharging control method of the universal type rechargeable battery includes the following control conditions:

Control condition 1: When the charging power source is connected to the universal charging battery, the lithium ion battery detecting circuit detects the charging voltage that is connected, and controls the DC-DC buck type voltage stabilizing discharge circuit and the lithium ion battery charging control circuit to enter the charging. State, in the charging state, the DC-DC buck regulator discharge circuit turns off the regulated output, and the lithium ion battery charging control circuit turns on to charge the lithium ion battery;

Controlling condition 2, in the charging state, the lithium ion battery charging control circuit detects an output voltage of the lithium ion battery, and selects trickle charging, constant current charging or constant voltage charging according to an output voltage state of the lithium ion battery. The method is to charge a lithium ion battery. During the charging process, the lithium ion battery charging control circuit detects a maximum allowable output current of the charging power source. When the maximum allowable output current of the charging power source is less than a set charging current value, the charging power source is charged. Maximum allowable The output current charges the lithium ion battery, and stops charging the lithium ion battery when the charging current of the constant voltage charging state drops to the set full state determining current;

Control condition three, when the charging power source is separated from the universal charging battery, the lithium ion battery detecting circuit detects that the charging power source is detached, and releases excess energy stored by the filter capacitor during charging, so that the positive and negative electrodes of the universal rechargeable battery are The voltage quickly drops to or below the maximum open circuit voltage, and controls the DC-DC buck regulator discharge circuit and the lithium ion battery charge control circuit to enter a discharge state. In the discharge state, the lithium ion battery charge control circuit turns off the charge output, DC -DC buck regulator discharge circuit turns on the regulated discharge, and according to the control condition four regulated discharge output;

Control condition four, in the discharge state, the lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the output feedback depth of the DC-DC buck regulator discharge circuit, and the output voltage of the lithium ion battery is higher than the low battery When the voltage is V _L , the DC-DC buck regulator discharge circuit is controlled to reduce the output voltage of the lithium ion battery to the first output voltage regulated output; when the output voltage of the lithium ion battery is higher than the discharge cutoff voltage V _D but equal to or lower than When the battery voltage V _L is low, the DC-DC buck regulator discharge circuit is controlled to reduce the output voltage of the lithium ion battery to the second output voltage regulated output, and the output voltage after charging the lithium ion battery is higher than V _L +Δ When V ₁ , the DC-DC buck regulator discharge circuit is controlled to restore the first output voltage regulated output; V _L is the set lithium ion battery low battery voltage, and ΔV ₁ is the set lithium ion battery low battery voltage. Detecting the threshold voltage of the threshold, V _D is the set discharge threshold of the lithium ion battery;

Control condition 5, in the discharge state, the lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the DC-DC step-down mode when the output voltage of the lithium ion battery drops to be equal to or lower than the discharge cutoff voltage V _D The voltage discharge circuit turns off the regulated output, and when the output voltage of the lithium ion battery is higher than V _D +ΔV ₂ , the voltage output is restored according to the control condition 4; ΔV ₂ is the set discharge voltage of the lithium ion battery. Detecting the threshold voltage of the threshold;

Control condition six, in the charging process of the universal rechargeable battery, the lithium ion battery detecting circuit detects the temperature of the lithium ion battery, and controls the charging of the lithium ion battery when the temperature of the lithium ion battery rises to the charging upper limit temperature T _CH The control circuit stops charging the lithium ion battery, and resumes charging again when the temperature of the lithium ion battery drops below T _CH -ΔT ₁ , T _CH is the set lithium ion battery charging upper limit temperature, ΔT ₁ is the setting The temperature difference corresponding to the hysteresis voltage of the T _CH detection threshold;

Control condition seven, in the discharge process of the universal rechargeable battery, the lithium ion battery detection circuit detects the temperature of the lithium ion battery, and controls the DC-DC voltage _drop when the temperature of the lithium ion battery rises to the discharge upper limit temperature T _DH The type regulated discharge circuit stops the regulated output, and restores the regulated output again when the temperature of the lithium ion battery drops below T _DH -ΔT ₂ , and T _DH is the set upper limit temperature of the lithium ion battery, ΔT ₂ The hysteresis temperature corresponding to the hysteresis voltage of the threshold of the set T _DH detection;

When the control condition 1 gives the charging power source to the universal rechargeable battery, and the control condition 6 allows the lithium ion battery to be charged, the lithium ion battery is charged according to the control condition 2, and the lithium ion battery is not allowed to be charged when the control condition 6 is not allowed. Stop charging the Li-ion battery;

When the control condition three gives the general-purpose rechargeable battery out of the charging power supply, and the control condition 5 and the control condition 7 both allow the lithium ion battery to discharge the output, according to the control condition four, the lithium ion battery output power is stepped down and the output is stabilized, when the control is performed. When the condition 5 or the control condition 7 does not allow the lithium ion battery to discharge output, the DC-DC buck regulator discharge circuit is controlled to turn off the regulated output.

The invention has the beneficial effects that the universal rechargeable battery comprising the lithium ion battery of the invention has a regulated output of 1.5V and a regulated output of 1.1V when the lithium ion battery is low, and can be charged by a computer USB interface or a universal lithium ion battery. The adapter charges it, its body structure and discharge performance meet the technical specifications of GB/T 8897.2-2013 and IEC 60086-2, which can directly replace the existing universal primary battery and nickel-hydrogen rechargeable battery, with high performance and charging. The controller and the lithium ion battery are assembled in the same outer package by pressing together and the two are connected through the positive electrode tab to prevent contact ablation during high current charging and discharging, and improve the charging controller and the positive electrode of the lithium ion battery. The reliability of the connection, the structure of the charge and discharge controller and the assembly process are simple, which is conducive to automated mass production assembly. The controller housing is used as the electrode structure of the lithium ion battery negative electrode to connect to the lithium ion battery charge and discharge control circuit, which saves a large Charge and discharge the internal space of the controller, eliminating the moving parts that hinder the sealing of the charge and discharge controller, and realizing the charge and discharge controller Waterproof sealing to prevent the problem of circuit failure after damp and water immersion, which is beneficial to improve the storage capacity of general-purpose rechargeable battery and reduce production cost. At the same time, the charge and discharge controller is equipped with lithium ion battery charging control circuit, lithium ion battery detection circuit and DC- The DC step-down type regulated discharge circuit has high-precision temperature detection function, realizes the control and protection of the charging and discharging process of the lithium ion battery, improves the cycle life and safety of the lithium ion battery, and uses the lithium ion of the present invention. The control method of the general-purpose rechargeable battery composed of the battery, according to the charging and discharging working technical conditions required for the lithium ion battery, by setting the lithium ion battery charging control circuit, the lithium ion battery detecting circuit and the DC-DC buck type voltage stabilizing discharging circuit Control and protect the charging and discharging process of the lithium ion battery, and realize the control and protection of the charging mode, charging rate, overcharging, overdischarging, discharging rate and charging and discharging overheating of the charging and discharging process of the lithium ion battery. Lithium-ion battery cycle life and safety, and the realization of universal charging The tank regulator output is 1.5V and the regulated output is 1.1V when the lithium-ion battery is low. It realizes the use of the computer USB interface or the universal lithium-ion battery charging adapter to charge the universal rechargeable battery, realizing the general-purpose rechargeable battery structure and The discharge performance meets the technical specifications of GB/T 8897.2-2013 and IEC 60086-2, and can directly replace the existing general-purpose primary battery and nickel-hydrogen rechargeable battery, and the output voltage is constant during the cycle charge and discharge and discharge process. It is superior to existing general-purpose primary batteries in terms of environmental protection, and is superior to existing nickel-hydrogen rechargeable batteries in terms of nominal output voltage of 1.5V, constant output voltage during discharge, short charging time, no memory effect and long cycle life. Improve the performance of general-purpose rechargeable batteries.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the detailed description of the invention and the accompanying drawings. .

DRAWINGS

The technical solutions and other advantageous effects of the present invention will be apparent from the following detailed description of embodiments of the invention.

In the drawings,

1 is a schematic structural view of a positive end of a rechargeable battery after assembly of an R20 rechargeable battery composed of a lithium ion battery;

2 is a schematic structural view of the negative end of the rechargeable battery after assembly of the R20 rechargeable battery composed of a lithium ion battery;

3 is a schematic view showing the structure of a positive end of a negative-capacity single-cell lithium ion battery of a R20 rechargeable battery using a lithium ion battery;

4 is a schematic view showing the structure of the negative end of a negative-capacity single-cell lithium ion battery of a R20 rechargeable battery using a lithium ion battery;

5 is a schematic view showing the internal assembly structure of the outer package housing along the axis after the assembly of the R20 rechargeable battery composed of the single-capacitor lithium-ion battery;

6 is a schematic exploded view of the R20 rechargeable battery assembled by using a single-cell lithium-ion battery with a negative-case package;

7 is a schematic view showing the structure of a positive end of a positive electrode package single-cell lithium ion battery of a R20 rechargeable battery using a plurality of lithium ion batteries connected in parallel;

8 is a schematic view showing the structure of a negative end of a positive-electrode packaged single-cell lithium ion battery of a R20 rechargeable battery using a plurality of lithium ion batteries connected in parallel;

9 is a schematic view showing the structure of the negative end of the parallel assembly of the positive electrode package unit lithium ion battery of the R20 rechargeable battery using a plurality of lithium ion batteries connected in parallel;

10 is a schematic exploded view showing a parallel assembly of a positive electrode package single-cell lithium ion battery using a R20 rechargeable battery in which a plurality of lithium ion batteries are connected in parallel;

11 is a schematic view showing the internal assembly structure of the outer package housing along the axis after assembly of the R20 rechargeable battery comprising a plurality of outer casing positive package lithium ion batteries;

Figure 12 is a R20 rechargeable battery composed of a plurality of positive-case packaged single-cell lithium-ion batteries. Schematic diagram of the exploded structure after assembly;

13 is a schematic diagram showing the structure of a positive end of a soft-packaged single-cell lithium ion battery used in an R20 rechargeable battery in which a plurality of lithium ion batteries are connected in parallel;

14 is a schematic diagram showing the structure of a positive end of a parallel assembly of a soft-packaged single-cell lithium-ion battery equipped with a plurality of lithium-ion batteries in parallel;

15 is a schematic exploded view of a lithium-ion battery parallel assembly assembled with a flexible packaged single-cell lithium-ion battery using a plurality of lithium-ion batteries in parallel;

16 is a schematic view showing the internal assembly structure of the outer package housing along the axis after assembly of the R20 rechargeable battery composed of a plurality of soft packaged single lithium ion batteries;

17 is a schematic exploded view of an R20 rechargeable battery constructed by using a plurality of soft packaged single lithium ion batteries;

18 is a schematic structural view of one end of a positive electrode end cover of a charging and discharging controller for a R20 rechargeable battery;

19 is a schematic structural view of the R20 rechargeable battery equipped with a charge and discharge controller for the positive end of the lithium ion battery;

20 is a schematic view showing the internal assembly structure of the charging and discharging controller housing, the charging and discharging controller bracket and the positive electrode end cover along the axis after the R20 rechargeable battery is assembled with the charging and discharging controller;

21 is a schematic diagram of an explosion structure of an R20 rechargeable battery equipped with a charge and discharge controller;

22 is a schematic structural view of one end of a positive electrode end cover of a PCB soldering body in a charge and discharge controller of an R20 rechargeable battery;

Figure 23 is a schematic view showing the structure of the anode of the PCB soldering body lithium ion battery in the R20 rechargeable battery with the charge and discharge controller;

Figure 24 is a schematic view showing the explosion structure of the PCB soldering body in the charging and discharging controller of the R20 rechargeable battery;

25 is a schematic structural view of a positive end of a rechargeable battery after assembly of an R14 rechargeable battery composed of a lithium ion battery;

26 is a schematic structural view of the negative end of the rechargeable battery after assembly of the R14 rechargeable battery composed of a lithium ion battery;

27 is a schematic view showing the structure of a positive end of a positive electrode package single-cell lithium ion battery of a R14 rechargeable battery using a lithium ion battery;

28 is a schematic view showing the structure of the negative end of the positive electrode package single-cell lithium ion battery of the R14 rechargeable battery using the lithium ion battery;

29 is a schematic view showing the internal assembly structure of the outer package housing along the axis after the assembly of the R14 rechargeable battery composed of the positive electrode package single-cell lithium ion battery;

30 is a schematic exploded view of the assembled R14 rechargeable battery comprising a single-cell lithium-ion battery with a positive electrode package;

31 is a schematic diagram showing the structure of a positive end of a negative electrode package single-cell lithium ion battery of a R14 rechargeable battery using a plurality of lithium ion batteries;

32 is a schematic view showing the structure of the negative end of the negative electrode package single-cell lithium ion battery of the R14 rechargeable battery using a plurality of lithium ion batteries;

33 is a schematic diagram showing the structure of a positive end of a parallel assembly of a negative electrode package unit lithium ion battery using a R14 rechargeable battery composed of a plurality of lithium ion batteries;

FIG. 34 is a schematic exploded view showing a parallel assembly of a negative electrode package unit lithium ion battery using a R14 rechargeable battery composed of a plurality of lithium ion batteries; FIG.

35 is a schematic view showing the internal assembly structure of the outer package housing along the axis after assembly of the R14 rechargeable battery comprising a plurality of outer casing negative package lithium ion batteries;

36 is a schematic exploded view of the assembled R14 rechargeable battery comprising a plurality of outer casing negative-package single-cell lithium ion batteries;

37 is a schematic structural view of one end of a positive electrode end cover of a charging and discharging controller for a R14 rechargeable battery;

38 is a schematic structural view of the R14 rechargeable battery equipped with a charge and discharge controller for the positive end of the lithium ion battery;

39 is a schematic view showing the internal assembly structure of the charging and discharging controller housing, the charging and discharging controller bracket and the positive electrode end cover along the axis after the R14 rechargeable battery is assembled with the charging and discharging controller;

40 is a schematic diagram of an explosion structure of the R14 rechargeable battery equipped with a charge and discharge controller;

41 is a structural schematic view showing one end of a positive electrode end cover of a PCB soldering body in a charging and discharging controller of a R14 rechargeable battery;

42 is a structural schematic view showing the end of the positive electrode of the PCB soldering body lithium ion battery in the charging and discharging controller of the R14 rechargeable battery;

43 is a schematic diagram of an explosion structure of a PCB soldering body in a charging and discharging controller for a R14 rechargeable battery;

44 is a schematic diagram showing the charging wiring principle of the R20 rechargeable battery of the present invention;

45 is a rechargeable battery of the present invention, which adopts an integrated DC-DC step-down lithium ion battery charging control chip, an integrated lithium ion battery charge and discharge detecting and controlling chip, and an integrated DC-DC buck regulator chip to form a rechargeable battery. Schematic diagram of the electrical principle of a charge and discharge control circuit for a lithium ion battery;

FIG. 46 is a schematic diagram showing a comparison of a discharge process voltage curve of a rechargeable battery using a lithium cobaltate (LiCoO 2 ) battery and a lithium iron phosphate (LiFePO 4 ) battery and a discharge voltage curve of the rechargeable battery.

detailed description

In order to further clarify the technical means and effects of the present invention, the following detailed description will be made in conjunction with the preferred embodiments of the invention and the accompanying drawings.

The present invention provides a universal rechargeable battery comprising a lithium ion battery, comprising: an outer package housing, and a charge and discharge controller, a positive electrode solder tab, a lithium ion battery, and a negative terminal end which are sequentially assembled and assembled in the outer package housing a cap of the charging and discharging controller is provided with a positive electrode end cover exposed to the outer package housing, the positive electrode contact point is a positive electrode of the universal rechargeable battery, and one end of the negative electrode end cover is exposed A negative electrode contact point of the package case, the negative electrode contact point serving as a negative electrode of a general-purpose rechargeable battery.

Referring to FIGS. 18 to 24 and FIGS. 37 to 43 and FIG. 45, the charge and discharge controller 150 (250) includes: a charge and discharge controller housing 151 (251), and a charge and discharge controller housing 151 (251). The charge and discharge control circuit soldering body 160 (260) and the charge and discharge controller holder 152 (252) are mounted, and the charge and discharge control circuit solder body 160 (260) is soldered with a lithium ion battery charge and discharge control circuit. The circuit structure on the soldering and discharging body 160 (260) of the charging and discharging control circuit: a component for soldering and discharging a lithium ion battery charge and discharge control circuit and a positive electrode end cover 101 (201) on the front surface of the PCB circuit substrate 171 (271) are used. The positive electrode tab 161 (261) is welded to the back surface of the PCB circuit board 171 (271), and the charge and discharge controller case 151 (251) is welded to the PCB circuit board 171 (271). The charging/discharging controller 150 (250) has a structure in which a charging and discharging controller bracket 152 (252) and a charging and discharging control circuit welding body 160 (260) are mounted in the charging and discharging controller housing 151 (251). After the charge and discharge controller housing 151 (251) is edge-sealed, the charge and discharge controller housing 151 (251) is crimped to the V-side of the lithium ion battery charge and discharge control circuit of the PCB circuit board 171 (271). The copper part is composed. The positive electrode of the lithium ion battery is connected to the node Jb+ of the lithium ion battery charge and discharge control circuit through the positive electrode tab 161 (261) (as shown in FIG. 45), and the negative electrode of the lithium ion battery passes through the negative electrode end cover 103 (203) and the outside. The package housing 102 (202) and the charge and discharge controller housing 151 (251) are connected to the V-end of the lithium ion battery charge and discharge control circuit, and the positive end cover 101 (201) is connected to the V+ of the lithium ion battery charge and discharge control circuit. end.

The assembling step of the charging and discharging control circuit soldering body 160 (260) includes: step 1. soldering components of the lithium ion battery charging and discharging control circuit on the front surface of the PCB circuit substrate 171 (271) to form the PCB soldering body 170 (270); Step 2, on the front side of the PCB circuit substrate 171 (271) of the PCB solder body 170 (270), the copper-plated portion of the lithium-ion battery charge and discharge control circuit V + end, welding the positive electrode end cover 101 (201); Step 3. The lithium ion battery charge and discharge control circuit node Jb+ on the back surface of the PCB circuit substrate 171 (272) of the PCB solder body 170 (270) The copper-clad portion is welded to the positive electrode tab 161 (261) to constitute a charge-discharge control circuit solder body 160 (260).

The assembly step of the charge and discharge controller 150 (250) includes: Step 1, loading and discharging the controller 152 (252) into the charge and discharge controller housing 151 (251); Step 2, charging and discharging the control circuit The soldering body 160 (260) is loaded into the charging and discharging controller bracket 152 (252); in step 3, the charging and discharging controller housing 151 (251) is edge-sealed by the edger; step 4, the PCB circuit board 171 (271) The lithium-ion battery charge and discharge control circuit V-end copper-clad portion and the charge-discharge controller housing 151 (251) are crimped after the hem; step 5, through the injection hole of the PCB circuit board 171 (271) The glue, after the adhesive is cured, constitutes a charge and discharge controller 150 (250). In the charge and discharge controller 150 (250) after the assembly is completed, the charge and discharge controller housing 151 (251) becomes the access electrode of the V-terminal of the lithium ion battery charge and discharge control circuit, and the positive electrode end cover 101 (201) becomes a lithium ion. The access electrode of the V+ terminal of the battery charge and discharge control circuit, the positive electrode tab 161 (261) becomes the access electrode of the lithium ion battery charge and discharge control circuit node Jb+.

The charge and discharge controller bracket 152 (252) is made of a light-guiding type insulating material for mounting the charging and discharging control circuit welding body 160 (260), and will be used to display the charging state of the general-purpose rechargeable battery. The optical signal emitted by D1 is conducted to the outside of the general-purpose rechargeable battery to display the state of charge of the universal rechargeable battery.

The structure of the charge and discharge controller 150 satisfies the technical conditions of the R20 rechargeable battery, and the structure of the charge and discharge controller 250 satisfies the technical conditions for the R14 rechargeable battery.

The lithium ion battery is selected from a negative electrode package single-cell lithium ion battery, a positive electrode package single-cell lithium ion battery, or a plurality of parallel outer casings of a lithium-ion battery connected by a current collecting device, and a plurality of parallel lithium-ion batteries. The casing is provided with a single-cell lithium-ion battery and a plurality of parallel-packed soft-packaged single-cell lithium-ion batteries. The current collecting device comprises a positive current collecting tab and a negative current collecting soldering fin disposed at two ends of a single lithium ion battery.

The step of assembling a universal rechargeable battery using a single-cell lithium-ion battery includes: step 1, using a spot welder to solder the negative electrode end cap to the negative electrode of the lithium ion battery; and step 2, using a spot welder to solder the positive electrode of the charge and discharge controller The sheet is soldered to the positive electrode of the lithium ion battery; step 3, the charged charge and discharge controller, the single lithium ion battery and the negative electrode end cover are loaded into the outer package housing along the axial direction, and placed in the insulation positioning tool pressure of the edge sealing machine After the fixing, the outer package housing is sealed and sealed to complete the universal rechargeable battery assembly; step 4, the outer packaging shell of the assembled universal rechargeable battery is coated or coated with insulating and decorative materials to form a universal rechargeable battery product. . Embodiments employing such an assembly method include: an R20 rechargeable battery comprising a single-capacitor lithium-ion battery with a negative-case package, and an R14 rechargeable battery comprising a single-cell lithium-ion battery with a positive-case package.

Universal charging with several parallel single-cell lithium-ion batteries connected through a current collecting device The step of the battery includes: Step 1. The side of the positive current collecting tab to which the insulating film is attached is directed toward the positive electrode of the lithium ion battery, and the positive current collecting soldering piece is respectively welded to the positive electrode of each single lithium ion battery by using a spot welding machine. The positive current collecting soldering piece is made into a parallel positive electrode of each single-cell lithium ion battery; in step 2, the side of the negative current collecting current piece to which the insulating film is attached is directed to the negative electrode of the lithium ion battery, and the negative electrode current collecting is performed by a spot welding machine. The sheets are respectively soldered to the negative electrodes of the individual lithium ion batteries, so that the negative current collecting tabs become the parallel negative electrodes of the individual lithium ion batteries, and constitute a parallel assembly of several single lithium ion batteries; Step 3, using spot welding The negative electrode end cover is welded on the negative current collecting tab of the lithium ion battery parallel assembly; step 4, the spot welding machine is used to weld the positive electrode welding piece of the charge and discharge controller and the positive current collecting piece of the lithium ion battery parallel assembly Step 5: Insert the soldered charge and discharge controller, the lithium ion battery parallel assembly and the negative electrode end cover into the outer package housing along the axial direction, and put them into the insulation positioning tool press of the edge sealing machine. After set, the trim housing outer package was sealed to complete universal rechargeable battery assembly; Step 6, the outer housing outer package assembled in general-purpose rechargeable battery and an insulating covering or decorative material coated universal rechargeable battery product. Embodiments adopting such an assembly method include: an R20 rechargeable battery in which a plurality of outer casing positive-package single-cell lithium ion batteries are connected in parallel, and an R14 rechargeable battery in which a plurality of outer casing negative-package single-cell lithium ion batteries are connected in parallel.

In the present invention, the positive electrode end cover, the outer package housing, the negative electrode end cover, the charge and discharge controller housing, the positive electrode solder tab, the positive current collecting tab, and the negative current collecting tab are all made of high thermal conductivity and high electrical conductivity. The metal material of the performance is manufactured, and the surface is subjected to conductive oxidation prevention treatment, wherein the positive current collecting tab and the negative current collecting soldering piece are adhered to the insulating portion of the welded portion by a conductive anti-oxidation treatment. . The forming process of the outer package shell is formed by prefabricated thin-walled pipe, or by sheet metal forming, or by sheet metal forming; the forming process of the charging and discharging controller shell is formed by prefabricating thin-walled pipe, or Formed by sheet metal or formed by sheet metal. The PCB circuit substrate is made of an insulating material with a high thermal conductivity, and can transfer heat generated by the lithium ion battery and components to the outer package housing for heat dissipation.

The heat dissipation principle of the universal rechargeable battery after assembly is: the heat generated by the power device of the lithium ion battery charge and discharge control circuit is transmitted to the general-purpose rechargeable battery through the PCB circuit substrate and the circuit copper-clad heat conduction structure and the charge and discharge controller housing. The package case heats up; the heat generated by the lithium ion battery is conducted at the positive end of the lithium ion battery through the positive electrode solder tab, the PCB circuit substrate, the circuit copper-clad heat conduction structure, and the charge and discharge controller housing to the universal rechargeable battery outer package. Body heat dissipation. At the negative end of the lithium ion battery, the negative end cap is conducted to the outer package of the universal rechargeable battery to dissipate heat.

The charge and discharge control circuit is equipped with a lithium ion battery charge and discharge control circuit, and the lithium ion battery charge and discharge control circuit comprises: soldering on the circuit substrate and respectively respectively, and the lithium ion battery, The positive pole cover and the lithium ion battery charging control circuit, the lithium ion battery detecting circuit, and the DC-DC buck type voltage stabilizing discharging circuit electrically connected to the negative electrode end cover through the charging and discharging controller housing and the outer package housing. The universal rechargeable battery of the present invention is charged by a computer USB interface or a universal lithium ion battery charging adapter. When the universal rechargeable battery is connected to the charging power source, the lithium ion battery detecting circuit detects the connected charging voltage and controls the DC. The -DC buck regulator discharge circuit turns off the regulated output and controls the Li-Ion battery charge control circuit to charge the Li-Ion battery.

In the embodiment of the present invention, the charging input voltage of the lithium ion battery charging control circuit of the R20 and R14 universal rechargeable batteries is compatible with the computer USB interface and the universal lithium ion battery charging adapter. The maximum charging current I _CHG of the lithium ion battery charging control circuit of the R20 and R14 universal rechargeable batteries is set by the resistance value of the second resistor R2 according to the capacity and charging characteristics of the lithium ion battery to be used, but if the charging power source is used When the maximum allowable output current is less than the set charging current I _CHG , the lithium ion battery charging control circuit charges the lithium ion battery according to the maximum allowable output current of the charging power source, so that the charging input current of the R20 and R14 universal rechargeable batteries is compatible with the computer USB. Interface and universal lithium ion battery charging adapter. The difference in the actual charging effect is that if the maximum allowable output current of the charging power source is greater than the set charging current I _CHG , the charging time of the universal charging battery is shorter, if the maximum allowable output current of the charging power source is less than the set charging current. When I _CHG , the general-purpose rechargeable battery has a longer charging time.

The universal rechargeable battery constructed by using the lithium ion battery of the present invention has a charging state in which the charging power source is connected and a discharging state in which the charging power source is disconnected. The charge and discharge control method of the universal type rechargeable battery includes the following control conditions:

Control condition 1: When the charging power source is connected to the universal charging battery, the lithium ion battery detecting circuit detects the charging voltage that is connected, and controls the DC-DC buck type voltage stabilizing discharge circuit and the lithium ion battery charging control circuit to enter the charging. status. In the charging state, the DC-DC buck regulator discharge circuit turns off the regulated output, and the lithium ion battery charging control circuit turns on to charge the lithium ion battery.

Controlling condition 2, in the charging state, the lithium ion battery charging control circuit detects an output voltage of the lithium ion battery, and selects trickle charging, constant current charging or constant voltage charging according to an output voltage state of the lithium ion battery. The method is to charge a lithium ion battery. During the charging process, the lithium ion battery charging control circuit detects a maximum allowable output current of the charging power source. When the maximum allowable output current of the charging power source is less than a set charging current value, the charging power source is charged. The maximum allowable output current charges the lithium ion battery, and when the charging current in the constant voltage charging state drops to the set full state determination current, the charging of the lithium ion battery is stopped.

Control condition three, when the charging power source is separated from the universal rechargeable battery, the lithium ion battery is inspected The measuring circuit detects that the charging power source is disconnected, and the excess energy stored by the filter capacitor during the charging process is released, so that the voltage between the positive and negative electrodes of the universal rechargeable battery is rapidly reduced to be equal to or lower than the maximum open circuit voltage, and the DC-DC voltage is controlled. The type regulated discharge circuit and the lithium ion battery charging control circuit enter a discharge state. In the discharge state, the lithium ion battery charging control circuit turns off the charging output, and the DC-DC buck type voltage stabilizing discharging circuit turns on the voltage stabilizing discharge, and discharges according to the control condition four voltage stabilizing outputs.

Control condition four, in the discharge state, the lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the output feedback depth of the DC-DC buck regulator discharge circuit, and the output voltage of the lithium ion battery is higher than the low battery When the voltage is V _L , the DC-DC buck regulator discharge circuit is controlled to reduce the output voltage of the lithium ion battery to the first output voltage regulated output; when the output voltage of the lithium ion battery is higher than the discharge cutoff voltage V _D but equal to or lower than When the battery voltage V _L is low, the DC-DC buck regulator discharge circuit is controlled to reduce the output voltage of the lithium ion battery to the second output voltage regulated output, and the output voltage after charging the lithium ion battery is higher than V _L +Δ When V ₁ , the DC-DC buck regulator discharge circuit is controlled to restore the first output voltage regulated output; V _L is the lithium ion set by the voltage detecting circuit according to the voltage/capacity characteristic of the lithium ion battery matched with the universal rechargeable battery. low battery voltage, △ V ₁ voltage detection circuit is set low battery voltage of the lithium ion detector threshold hysteresis, V _D is the voltage detecting circuit according to general rechargeable batteries lithium-ion supporting The discharge characteristics of the lithium ion battery set discharge cutoff voltage.

Control condition 5, in the discharge state, the lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the DC-DC step-down mode when the output voltage of the lithium ion battery drops to be equal to or lower than the discharge cutoff voltage V _D The piezoelectric discharge circuit turns off the regulated output, and when the output voltage of the lithium ion battery is higher than V _D +ΔV ₂ , the regulated output is restored according to the control condition 4; ΔV ₂ is the lithium ion battery set by the voltage detecting circuit. The return voltage of the discharge cutoff voltage detection threshold;

Control condition six, in the charging process of the universal rechargeable battery, the lithium ion battery detecting circuit detects the temperature of the lithium ion battery, and controls the charging of the lithium ion battery when the temperature of the lithium ion battery rises to the charging upper limit temperature T _CH The control circuit stops charging the lithium ion battery, and resumes charging again when the temperature of the lithium ion battery drops below the charging upper limit temperature minus the difference temperature (ie, T _CH - ΔT ₁ ), and the T _CH is in accordance with the general-purpose rechargeable battery. The lithium ion battery charging upper limit temperature set by the charging technical condition of the lithium ion battery, and ΔT ₁ is the hysteresis temperature corresponding to the hysteresis voltage of the T _CH detecting threshold set by the thermistor Rt voltage detecting circuit;

Control condition seven, in the discharge process of the universal rechargeable battery, the lithium ion battery detecting circuit detects the temperature of the lithium ion battery, and controls the DC-DC drop when the temperature of the lithium ion battery rises to the discharge upper limit temperature T _DH The voltage-type regulated discharge circuit stops the regulated output, and restores the regulated output again when the temperature of the lithium-ion battery drops below the discharge upper limit temperature minus the return difference temperature (ie, T _DH -ΔT ₂ ), and the T _DH is in accordance with the general The discharge upper limit temperature of the lithium ion battery set by the discharge technical condition of the lithium ion battery of the type rechargeable battery, ΔT ₂ is the hysteresis temperature corresponding to the hysteresis voltage of the T _DH detection threshold set by the thermistor Rt voltage detecting circuit.

The first output voltage of the general-purpose rechargeable battery of the present invention may be any voltage value of 1.35V to 1.725V, and the second output voltage may be any voltage value of 0.9V to 1.35V, and the maximum open circuit voltage may be It is an arbitrary voltage value of 1.5V to 1.725V; preferably, the first output voltage is 1.5V, the second output voltage is 1.1V, and the maximum open circuit voltage is 1.65V.

Referring to FIG. 45, the lithium ion battery charge and discharge control circuit includes: a lithium ion battery LIB, an integrated DC-DC step-down lithium ion battery charging control chip U1, an integrated lithium ion battery charge and discharge detection and control chip U2, and an integrated DC. -DC buck regulator chip U3, first resistor R1, second resistor R2, third resistor R3, fourth resistor R4, fifth resistor R5, sixth resistor R6, seventh resistor R7, eighth resistor R8, The ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the negative temperature coefficient thermistor Rt, the light emitting diode D1, the first inductor L1, the second inductor L2, and the first capacitor C1 The second capacitor C2, the third capacitor C3, and the fourth capacitor C4; wherein, the integrated DC-DC step-down lithium ion battery charging control chip U1, the first resistor R1, the second resistor R2, the third resistor R3, and the first capacitor C1 The second capacitor C2, the fourth capacitor C4, the first inductor L1, and the light emitting diode D1 constitute a lithium ion battery charging control circuit, and integrate the lithium ion battery charge and discharge detecting and controlling chip U2, the fourth resistor R4, the fifth resistor R5, and the first Six resistor R6, negative temperature coefficient thermistor Rt constitutes lithium ion Sub-battery detection circuit, integrated DC-DC buck regulator chip U3, seventh resistor R7, eighth resistor R8, ninth resistor R9, tenth resistor R10, eleventh resistor R11, twelfth resistor R12, The second inductor L2, the second capacitor C2, the third capacitor C3, and the fourth capacitor C4 constitute a DC-DC step-down type regulated discharge circuit; the anode of the lithium ion battery LIB is connected to the node Jb+, and the cathode of the lithium ion battery LIB is connected to the lithium The V-terminal of the ion battery charging and discharging control circuit; the charging power input pin PVin of the integrated DC-DC step-down lithium ion battery charging control chip U1 is connected to the V+ terminal and the fourth capacitor C4 of the lithium ion battery charging and discharging control circuit The positive pole, the integrated power supply pin PGND of the integrated DC-DC step-down lithium-ion battery charging control chip U1 is connected to the negative pole of the second capacitor C2, the negative pole of the fourth capacitor C4, and the V-side of the charge and discharge control circuit of the lithium ion battery. The signal ground pin AGND of the integrated DC-DC step-down lithium-ion battery charge control chip U1 is connected to the negative pole of the first capacitor C1, the cathode of the fourth capacitor C4, and the V- terminal of the charge and discharge control circuit of the lithium ion battery, integrated DC- Thermistor of DC step-down lithium ion battery charging control chip U1 The access pin NTC is connected to the signal ground pin AGND of the DC-DC step-down lithium ion battery charging control chip U1, and the integrated DC-DC step-down lithium ion battery charging control chip U1 is charged and the detection pin BAT is connected. The positive pole of the lithium ion battery LIB and the positive pole of the second capacitor C2, the integrated state of the DC-DC step-down lithium ion battery charging control chip U1, the charging state output pin LDD is connected to the cathode of the light emitting diode D1, and the integrated DC-DC step-down lithium The charging current setting pin IBSET of the ion battery charging control chip U1 is connected to one end of the second resistor R2, and the output tracking detection pin BSC of the integrated DC-DC step-down lithium ion battery charging control chip U1 is connected to the positive pole of the first capacitor C1. One end of the first inductor L1, the modulation output pin SW of the integrated DC-DC step-down lithium ion battery charging control chip U1 is connected to the other end of the first inductor L1, and the integrated DC-DC step-down lithium ion battery charging control chip U1 The charge enable pin EN is connected to one end of the charge control pin CEC and the third resistor R3 of the lithium ion battery charge and discharge detection and control chip U2; the lithium ion battery of the integrated lithium ion battery charge and discharge detection and control chip U2 Access The foot VBSE is connected to the positive pole of the lithium ion battery LIB, the integrated lithium ion battery charge and discharge detection and control chip U2 power ground pin GND is connected to the V-terminal of the lithium ion battery charge and discharge control circuit, and the integrated lithium ion battery charge and discharge detection and control chip U2 temperature detection setting pin DTCS is connected to node P1, integrated lithium ion battery charge and discharge detection and control chip U2 NTC voltage detection pin NTC is connected to the voltage point P2, integrated lithium ion battery charge and discharge detection and control chip U2 charging power supply The access pin VCS is connected to the V+ terminal of the lithium ion battery charge and discharge control circuit, and the integrated lithium ion battery charge and discharge detection and control chip U2 charging control pin CEC is integrated with the DC-DC step-down lithium ion battery charging control chip U1. Charging enable pin EN, integrated lithium-ion battery charge and discharge detection and control chip U2 discharge control pin DEN connected to the DC-DC buck regulator chip U3 output enable pin EN, integrated lithium-ion battery charge and discharge Detection and control chip U2 discharge feedback control pin DFBC is connected to node P3, integrated lithium ion battery charge and discharge detection and control chip U2's residual power release pin DECO is connected to the sixth resistor R6 The power supply input pin PVDD of the integrated DC-DC buck regulator chip U3 is connected to the positive pole of the lithium ion battery LIB and the positive pole of the second capacitor C2, and the signal power of the DC-DC buck regulator chip U3 is integrated. The input pin AVDD is connected to the positive pole of the lithium ion battery LIB and the positive pole of the second capacitor C2, and the power ground pin PGND of the integrated DC-DC buck regulator chip U3 is connected to the negative pole of the second capacitor C2 and the cathode of the fourth capacitor C4. And the V-terminal of the charge and discharge control circuit of the lithium ion battery, the signal ground pin AGND of the integrated DC-DC buck regulator chip U3 is connected to the negative pole of the second capacitor C2, the cathode of the third capacitor C3, and the lithium ion battery charge and discharge. The V-terminal of the control circuit, the error amplifier of the integrated DC-DC buck regulator chip U3, the external compensation pin SHDN/RT is connected to one end of the twelfth resistor R12, and the oscillation of the integrated DC-DC buck regulator chip U3 The external setting pin COMP is connected to one end of the eleventh resistor R11, and the feedback input pin FB of the integrated DC-DC buck regulator chip U3 is connected to the voltage dividing point P4, and the integrated DC-DC buck regulator chip U3 The output enable pin EN is connected to the discharge control pin DEN of the lithium ion battery charge and discharge detection and control chip U2. The first end of the seventh resistor R7, the modulation output pin SW of the integrated DC-DC buck regulator chip U3 is connected to one end of the second inductor L2; the first resistor R1 is a current limiting resistor of the LED D1, One end of the resistor R1 is connected to the V+ end of the charge and discharge control circuit of the lithium ion battery, and the other end is connected to the anode of the light emitting diode D1; the second resistor R2 is the charging current setting of the integrated DC-DC step-down lithium ion battery charging control chip U1. Resistor, the second resistor R2 is connected to the charging current setting pin IBSET of the integrated DC-DC step-down lithium-ion battery charging control chip U1, and the other end is connected to the signal ground of the integrated DC-DC step-down lithium ion battery charging control chip U1. Pin AGND; the third resistor R3 is a pull-up resistor of the integrated DC-DC step-down lithium ion battery charging control chip U1 charging enable pin EN, and the third resistor R3 is connected with an integrated DC-DC step-down lithium The charging enable chip EN of the ion battery charging control chip U1 is connected to the positive terminal of the lithium ion battery LIB; the fourth resistor R4 is the upper bias voltage dividing resistor of the voltage dividing point P2, and the fourth resistor R4 is connected to the lithium terminal. The positive pole of the ion battery LIB, the other end is connected to the fifth resistor R5 The node P1; the fifth resistor R5 is an upper bias voltage dividing resistor of the voltage dividing point P2, the fifth resistor R5 is connected to the fourth resistor R4 at the node P1, and the other end is connected to the negative temperature coefficient thermistor Rt for voltage division. Point P2; the sixth resistor R6 is the charging residual energy discharge current limiting resistor of the fourth capacitor C4, and the sixth resistor R6 is connected to the remaining energy release pin DECO of the lithium ion battery charge and discharge detection and control chip U2 at one end, One end is connected to the positive pole of the fourth capacitor C4; the seventh resistor R7 is a pull-up resistor of the integrated DC-DC buck regulator chip U3 output enable pin EN, and the seventh resistor R7 is connected with an integrated DC-DC buck. The output regulator chip U3 has an output enable pin EN, and the other end is connected to the anode of the lithium ion battery LIB; the eighth resistor R8 is an upper bias voltage dividing resistor of the voltage dividing point P4, and the eighth resistor R8 is connected to the lithium ion at one end. The V+ end of the battery charge and discharge control circuit, the other end is connected to the ninth resistor R9 at the voltage dividing point P4; the ninth resistor R9 is the lower bias voltage dividing resistor of the voltage dividing point P4, and the ninth resistor R9 is connected to the eighth resistor R8 is at a voltage dividing point P4, and the other end is connected to a tenth resistor R10 at a node P3; the tenth resistor R10 is a voltage dividing point P4. Bias voltage divider resistor, the tenth resistor R10 is connected to the ninth resistor R9 at node P3, and the other end is connected to the lithium-ion battery charge and discharge detection and control chip U2 power ground pin GND and integrated DC-DC buck regulator The signal ground pin AGND of the chip U3; the eleventh resistor R11 is an oscillating frequency setting resistor of the integrated DC-DC buck regulator chip U3, and the eleventh resistor R11 is connected with an integrated DC-DC buck type at one end. The external set pin COMP of the oscillator of the chip U3 is connected, and the signal ground pin AGND of the integrated DC-DC buck regulator chip U3 is connected to the other end; the twelfth resistor R12 is integrated DC-DC step-down type stable The error amplifier of the voltage chip U3 compensates for the loop resistance, and the twelfth resistor R12 is connected to the error amplifier external compensation pin SHDN/RT of the integrated DC-DC buck regulator chip U3, and the other end is connected to one end of the third capacitor C3; The negative temperature coefficient thermistor Rt is the negative temperature coefficient thermistor of the lithium ion battery LIB temperature sensing, the negative temperature coefficient thermistor Rt is connected to the fifth resistor R5 at the voltage dividing point P2, and the other end is connected to the integrated lithium ion battery. Charge and discharge detection and control chip U2 power supply ground pin GND, negative temperature system The body insulation portion of the number thermistor Rt is abutted on the heat conduction circuit structure connected to the LIB output electrode of the lithium ion battery; the light emitting diode D1 is a charging operation state of the integrated DC-DC step-down lithium ion battery charging control chip U1 Displaying a light emitting diode, the anode of the light emitting diode D1 is connected to the other end of the first resistor R1, and the cathode of the light emitting diode D1 is connected to the charging state output pin LDD of the DC-DC step-down lithium ion battery charging control chip U1; Inductor L1 is the output filter and compensation inductor of the integrated DC-DC step-down lithium-ion battery charge control chip U1. The first inductor L1 is connected to the output tracking detection pin of the integrated DC-DC step-down lithium-ion battery charge control chip U1. The BSC and the positive pole of the first capacitor C1 are connected to the modulation output pin SW of the DC-DC step-down lithium ion battery charging control chip U1; the second inductor L2 is an integrated DC-DC buck regulator chip. U3's output filtering and compensation inductance, the second inductor L2 is connected to the modulation output pin SW of the integrated DC-DC buck regulator chip U3, and the other end is connected to the positive electrode of the fourth capacitor C4 and the charge and discharge control of the lithium ion battery. The first capacitor C1 is a charging output filter and a compensation capacitor of the integrated DC-DC step-down lithium ion battery charging control chip U1, and the anode of the first capacitor C1 is integrated with a DC-DC step-down lithium ion battery. The output of the charging control chip U1 tracks the detecting pin BSC and one end of the first inductor L1, and the negative terminal of the first capacitor C1 is connected to the power ground pin PGND of the DC-DC buck type lithium ion battery charging control chip U1 and the integrated DC- DC step-down lithium ion battery charging control chip U1 signal ground pin AGND and lithium ion battery charge and discharge control circuit V-end; the second capacitor C2 is integrated DC-DC buck lithium ion battery charge control chip The charging output filter capacitor of U1 and the input filter and compensation capacitor of integrated DC-DC buck regulator chip U3, the positive terminal of the second capacitor C2 is integrated with the charging output of DC-DC buck lithium ion battery charging control chip U1 and Detect pin BAT, signal power input pin AVDD of integrated DC-DC buck regulator U3 and power supply input pin PVDD of integrated DC-DC buck regulator U3, negative terminal of second capacitor C2 Integrated DC-DC step-down lithium-ion battery charging Power supply pin PGND of chip U1, signal ground pin AGND of integrated DC-DC step-down lithium-ion battery charge control chip U1, signal ground pin AGND of integrated DC-DC buck regulator chip U3 and integration The power supply pin PGND of the DC-DC buck regulator chip U3; the third capacitor C3 is the error amplifier compensation loop capacitor of the integrated DC-DC buck regulator chip U3, and the third capacitor C3 is connected at one end. The other end of the twelve resistor R12 is connected to the signal ground pin AGND of the DC-DC buck regulator chip U3; the fourth capacitor C4 is an integrated DC-DC buck lithium ion battery charge control chip U1. The input filter and compensation capacitor and the output filter and compensation capacitor of the integrated DC-DC buck regulator U3, the positive terminal of the fourth capacitor C4 is integrated with the DC-DC buck lithium-ion battery charge control chip U1. The pin PVin and the second inductor L2 and the V+ terminal of the lithium ion battery charge and discharge control circuit, and the negative terminal of the fourth capacitor C4 are connected to the power ground pin PGND of the DC-DC buck lithium ion battery charge control chip U1, integrated DC -DC buck regulator chip U3 power ground pin PGND, integrated DC-DC drop Lithium ion battery charge control chip U1, and the signal ground pin AGND integrated DC-DC step-down regulator chip U3 signal ground pin AGND. The integrated DC-DC step-down lithium ion battery charging control chip U1 is a model of MGS2520A or MGS2520B or MGS2520C of ShenZhen Migison Electric Co., Ltd., and its main control parameters include Charging input voltage 4V ~ 6V, charging upper limit voltage V _H (4.2V for MGS2520A, 3.65V for MGS2520B, 4.35V for MGS2520C), maximum charge output current 2A (I _CHG ), full state determination current I _CHG /10; The model of integrated lithium-ion battery charge and discharge detection and control chip U2 is MGS1700A or MGS1700B of Shenzhen Magesson Electric Technology Co., Ltd. The main control parameters include: input voltage 2.25V～9V, NTC voltage detection threshold is 0.5V _LIB , Discharge low battery voltage V _L (3.4V for MGS1700A, 3.0V for MGS1700B), discharge cutoff voltage V _D (3.0V for MGS1700A, 2.55V for MGS1700B), and a residual power release threshold of 1.65V; the integrated DC-DC buck regulator chip U3 model Shenzhen Maige Song electric Co., Ltd. or the MGS3050 MGS3035, which comprises a main control parameters, input voltage 2.25V ~ 6V, the feedback reference voltage 0.6V (V _FB), the maximum output Stream (MGS3050 as 5A, MGS3035 to 3.5A).

Specific control method for each working state of charge and discharge control circuit of lithium ion battery

Charge and discharge mode switching control method: when the universal rechargeable battery is not connected to the charging power state, the integrated lithium ion battery charge and discharge detection and control chip U2 charging power supply pin VCS voltage is less than 4V, integrated lithium ion battery charge and discharge detection and The charge control pin CEC and the discharge control pin DEN output of the control chip U2 are both high impedance state. In this state, the integrated DC-DC step-down lithium ion battery charge control chip U1 is replaced by the third resistor due to the charge enable pin EN. R3 pull-up is high and the charging is turned off. The integrated DC-DC buck regulator chip U3 turns on the regulated discharge output because the output enable pin EN is pulled up to the high level by the seventh resistor R7. The type rechargeable battery enters the steady state discharge state. After the universal rechargeable battery is connected to the charging power source, the integrated lithium ion battery charge and discharge detection and control chip U2 detects that the charging input voltage is higher than the charging power input pin VCS. At 4V, the charge control pin CEC and the discharge control pin DEN output of the integrated lithium-ion battery charge and discharge detection and control chip U2 are both low level. In this state, the DC-DC step-down lithium-ion battery charge control chip U1 is integrated. The charging enable pin EN is integrated with the lithium ion battery charge and discharge detection and control chip U2's charge control pin CEC is pulled low to charge the lithium ion battery LIB, integrated DC-DC buck regulator chip U3 Since the output enable pin EN is integrated with the lithium ion battery charge and discharge detection and the discharge control pin DEN of the control chip U2 is pulled down to a low level, the regulated discharge is turned off, and the general-purpose rechargeable battery enters a charging state. In addition, when the charging type is switched from the charging state to the discharging state after the charging power source is detached, the integrated lithium ion battery charging and discharging detecting and controlling chip U2's remaining power releasing pin DECO output is low level, so that the fourth capacitor C4 The excess electric energy charged during charging is discharged by the sixth resistor R6, so that the no-load voltage of the universal rechargeable battery is rapidly reduced to the maximum open circuit voltage, and after the voltage of the fourth capacitor C4 falls to be equal to or lower than the maximum open circuit voltage. The integrated Li-ion battery charge and discharge detection and control chip U2's residual power release pin DECO output is converted to a high-impedance state.

Charging process control method: After the charging power source is connected to the universal charging battery, the positive pole of the charging power source is connected with the positive electrode V+ of the universal charging battery, and the negative pole of the charging power source is connected with the negative electrode V- of the universal charging battery, due to the general-purpose rechargeable battery The positive V+ is the V+ of the lithium ion battery charge and discharge control circuit, and the negative V- of the universal rechargeable battery is the V- of the lithium ion battery charge and discharge control circuit, which is equivalent to the positive connection of the charging power supply to the integrated DC-DC buck type. The charging power input pin PVin of the lithium ion battery charging control chip U1 and the negative electrode of the charging power source are connected to the power ground pin PGND of the integrated DC-DC step-down lithium ion battery charging control chip U1. At this time, if the lithium ion battery is integrated Discharge detection and control chip U2 charge control pin CEC output is low state, integrated DC-DC step-down lithium-ion battery charge control chip U1 is turned on to charge Li-ion battery LIB, integrated DC-DC step-down lithium ion The battery charging control chip U1 detects the output voltage V _{LIB of the} lithium ion battery LIB through the charging output and the detection pin BAT, and is charged and outputted according to the V _LIB state. The foot BAT output charges the Li-ion battery LIB. When the output voltage V _LIB of the Li-ion battery LIB is equal to or less than the Li-ion battery LIB discharge cut-off voltage V _D (V _LIB ≤ V _D ), the integrated DC-DC step-down lithium ion is integrated. The battery charging control chip U1 trickle charges the lithium ion battery LIB when the output voltage V _{LIB of the} lithium ion battery LIB is greater than the discharge cutoff voltage V _{D of the} lithium ion battery LIB but less than the charging upper limit voltage V _{H of the} lithium ion battery LIB (V _{When D} <V _LIB <V _H ), the integrated DC-DC step-down lithium-ion battery charging control chip U1 uses I _CHG to charge the lithium ion battery LIB with constant current, when the output voltage V _LIB of the lithium ion battery LIB is equal to lithium ion. When the charging upper limit voltage V _H (V _LIB =V _H ) of the battery LIB, the integrated DC-DC step-down lithium ion battery charging control chip U1 performs constant voltage charging on the lithium ion battery LIB with the charging upper limit voltage V _H until the charging current Stop charging after dropping to I _CHG /10. During the charging process, the light-emitting diode D1 is powered by the charging power source, and the integrated DC-DC step-down lithium ion battery charging control chip U1 is driven to display the working state of the charging process through the charging state output pin LDD.

Charging current control method: The constant current state maximum charging current of the integrated DC-DC step-down lithium ion battery charging control chip U1 charging the lithium ion battery LIB is set by the resistance value of the second resistor R2, that is, R2=1000V/I _CHG (I _CHG is the maximum charging current of the integrated DC-DC step-down lithium-ion battery charging control chip U1 in the constant current charging state), and the lithium-ion battery LIB of the integrated DC-DC step-down lithium-ion battery charging control chip U1 is full. The state determination current is I _CHG /10.

Charging power supply output current adaptation control method: integrated DC-DC step-down lithium-ion battery charging control chip U1 through the charging power input pin PVin, detecting the charging power supply's no-load state output voltage and pulse loading state output voltage voltage drop amplitude The value determines the maximum allowable output current of the charging power source. When the maximum current allowed by the charging power source is less than I _CHG , the integrated DC-DC step-down lithium-ion battery charging control chip U1 uses the maximum current allowed by the charging power source as the current limiting value. The lithium ion battery LIB is charged.

Regulated output voltage control method: In the discharge state of the universal rechargeable battery not connected to the charging power supply, the integrated lithium ion battery charge and discharge detection and control chip U2 monitors the output voltage of the lithium ion battery LIB through the lithium ion battery access pin VBAT _LIB , when the output voltage V _{LIB of the} lithium ion battery LIB is higher than the low battery voltage (V _LIB >V _L ), the discharge feedback control pin DFBC output of the integrated lithium ion battery charge and discharge detection and control chip U2 is in a high impedance state. The output voltage feedback of the integrated DC-DC buck regulator U3 is provided by the eighth resistor R8, the ninth resistor R9, and the voltage divider point P4 of the tenth resistor R10 series voltage dividing circuit, and the DC-DC is integrated in this state. The regulated output voltage of the buck regulator chip U3 is: Vout=V _FB {1+[R8/(R9+R10)]}=1.5V. When the LIB output voltage V _{LIB of the} lithium ion battery is equal to or lower than the low battery voltage (V _LIB ≤ V _L ), the discharge feedback control pin DFBC output of the integrated lithium ion battery charge and discharge detection and control chip U2 is low, equal to Connect the node P3 of the eighth resistor R8, the ninth resistor R9 and the tenth resistor R10 series voltage dividing circuit to the signal ground pin AGND of the integrated DC-DC buck regulator chip U3, which is equal to the integrated DC-DC step-down type. The output voltage feedback of the voltage regulator chip U3 is provided by the voltage dividing point P4 of the voltage dividing circuit composed of the eighth resistor R8 and the ninth resistor R9 in series, and the regulated output of the DC-DC buck regulator chip U3 is integrated in this state. The voltage is: Vout=V _FB [1+(R8/R9)]=1.1V. The integrated lithium-ion battery charge and discharge detection and control chip U2 detects the low-voltage voltage V _L of the lithium-ion battery LIB as a multi-point sampling mean, and the sampling frequency is proportional to the output voltage change rate of the Li-ion battery LIB, and the detection thereof is detected. The hysteresis voltage of the threshold is ΔV ₁ , so after the voltage V _{LIB of the} lithium ion battery LIB is raised to be equal to or higher than V _L +ΔV ₁ , the integrated lithium ion battery charge and discharge detection and control chip U2 controls the integrated DC -DC buck regulator chip U3 restores 1.5V regulated output.

Over-discharge protection method: In the discharge state of the universal rechargeable battery not connected to the charging power source, the integrated lithium-ion battery charge and discharge detection and control chip U2 monitors the output voltage V _{LIB of the} lithium ion battery LIB through the lithium ion battery access pin VBAT, When the output voltage V _{LIB of the} lithium ion battery LIB is higher than the discharge cutoff voltage (V _LIB >V _D ), the discharge control pin DEN output of the integrated lithium ion battery charge and discharge detection and control chip U2 is in a high impedance state. The output enable pin of the integrated DC-DC buck regulator chip U3 is pulled up to the high level by the seventh resistor R7, so that the integrated DC-DC buck regulator chip U3 turns on the regulated output. When the output voltage V _{LIB of the} lithium ion battery LIB is equal to or lower than the discharge cutoff voltage (V _LIB ≤ V _D ), the discharge control pin DEN output of the integrated lithium ion battery charge and discharge detection and control chip U2 is low and The output enable pin of the integrated DC-DC buck regulator U3 connected to it is pulled down to a low level, so that the integrated DC-DC buck regulator chip U3 turns off the regulated output. The integrated lithium-ion battery charge and discharge detection and control chip U2 detects the discharge cut-off voltage V _D of the Li-ion battery LIB as a multi-point sampling mean, and the sampling frequency is proportional to the output voltage change rate of the Li-ion battery LIB, and the detection thereof is detected. The hysteresis voltage of the threshold is ΔV ₂ , so after the output voltage V _{LIB of the} lithium ion battery LIB is raised to be equal to or higher than V _D +ΔV ₂ , the integrated lithium ion battery charge and discharge detection and control chip U2 control integration The DC-DC buck regulator chip U3 restores the regulated output.

Output overload or short-circuit control method: Integrated DC-DC buck regulator chip U3 has output overload or short-circuit protection circuit. When the general-purpose rechargeable battery output is overloaded or short-circuited, the integrated DC-DC buck regulator chip U3 is used. The maximum output current I _LIM is the current-limit regulated output. According to the discharge rate characteristic of the lithium ion battery used in the universal rechargeable battery, the maximum output current I _{LIM of the} integrated DC-DC buck regulator chip U3 is configured to avoid the lithium ion battery LIB super when the general-purpose rechargeable battery output is overloaded or short-circuited. Rate discharge damage.

Charging overheat protection control method: integrated lithium-ion battery charge and discharge detection and control chip U2 NTC voltage detection pin NTC threshold voltage is 0.5V _LIB , in the state of charge, integrated lithium-ion battery charge and discharge detection and control chip U2 temperature detection Set the pin DTCS output to high impedance state, and the resistance values of the fourth resistor R4, the fifth resistor R5 and the negative temperature coefficient thermistor Rt should satisfy: Rtch=R4+R5 (Rtch is a negative temperature coefficient thermistor Rt in lithium The ion battery temperature is equal to the resistance value at T _CH ). When the LIB operating temperature of the lithium ion battery is lower than the set charging upper limit temperature T _CH , the voltage of the NTC voltage detection pin NTC of the integrated lithium ion battery charge and discharge detection and control chip U2 is higher than 0.5V _LIB , and the integrated lithium ion battery charge The charge detection pin CEC of the discharge detection and control chip U2 outputs a low level and pulls down the charge enable pin EN of the integrated DC-DC step-down lithium ion battery charge control chip U1 connected thereto. In this state, the integrated DC-DC step-down lithium ion battery charging control chip U1 is turned on to charge the lithium ion battery LIB. When the operating temperature of the LIB battery LIB rises to be equal to or higher than the charging upper limit temperature T _CH , the voltage of the NTC voltage detecting pin NTC of the integrated lithium ion battery charge and discharge detecting and controlling chip U2 is equal to or lower than 0.5V _LIB , integrated lithium Ion battery charge and discharge detection and control chip U2 charge control pin CEC output is high impedance state, in this state integrated DC-DC buck lithium-ion battery charge control chip U1 charge enable pin EN is the third resistor R3 The pull-up is high, so that the integrated DC-DC step-down lithium-ion battery charging control chip U1 is turned off to charge the lithium ion battery LIB. The lithium-ion battery charge and discharge detection and control chip U2's NTC voltage detection threshold has a hysteresis voltage of ΔV _T , so the operating temperature of the Li-ion battery LIB is reduced to the NTC of the integrated lithium-ion battery charge and discharge detection and control chip U2. When the voltage of the voltage detection pin NTC is equal to or higher than 0.5V _LIB +ΔV _T , the integrated lithium ion battery charge and discharge detection and control chip U2 controls the integrated DC-DC step-down lithium ion battery charge control chip U1 to recover to lithium ion The battery LIB is charged.

Discharge overheat protection control method: In the charging state, the integrated lithium ion battery charge and discharge detection and control chip U2 shorts the temperature detection setting pin DTCS and the NTC voltage detection pin NTC through the built-in switch circuit. In this state, the fourth resistor R4 And the resistance value of the negative temperature coefficient thermistor Rt should satisfy: Rtdh=R4 (Rtdh is the resistance value of the negative temperature coefficient thermistor Rt when the lithium ion battery temperature is equal to T _DH ). When the operating temperature of the LIB battery LIB is lower than the discharge upper limit temperature T _DH , the voltage of the NTC voltage detection pin NTC of the integrated lithium ion battery charge and discharge detection and control chip U2 is higher than 0.5V _LIB , and the integrated lithium ion battery charge and discharge detection And the discharge control pin DEN output of the control chip U2 is in a high impedance state, so that the output enable pin EN of the integrated DC-DC buck regulator chip U3 connected thereto is pulled up to the high level by the seventh resistor R7. In this state, the integrated DC-DC buck regulator chip U3 turns on the regulated output. When the operating temperature of the LIB battery LIB rises to be equal to or higher than the discharge upper limit temperature T _DH , the voltage of the NTC voltage detection pin NTC of the integrated lithium ion battery charge and discharge detection and control chip U2 is equal to or lower than 0.5V _LIB , integrated lithium Ion battery charge and discharge detection and control chip U2 discharge control pin DEN output is low level, and the output enable pin of the integrated DC-DC buck regulator chip U3 connected thereto is pulled down to low level In this state, the integrated DC-DC buck regulator chip U3 turns off the regulated output. The hysteresis voltage of the NTC voltage detection threshold of the integrated lithium-ion battery charge and discharge detection and control chip U2 is ΔV _T , so the operating temperature of the Li-ion battery LIB is reduced to the NTC voltage of the integrated lithium-ion battery charge and discharge detection and control chip U2. When the voltage of the detection pin NTC is equal to or higher than 0.5V _LIB + ΔV _T , the integrated lithium-ion battery charge and discharge detection and control chip U2 controls the integrated DC-DC buck regulator chip U3 to restore the regulated output.

Referring to FIGS. 1 and 2 , the R20 rechargeable battery 100 includes an outer package housing 102 , and a charge and discharge controller 150 and a lithium ion battery 110 ( 120 , 130 ) and a negative end cover 103 encapsulated in the outer package housing 102 . At the positive end of the R20 rechargeable battery 100, the protruding structure of the positive electrode end cover 101 of the outer package housing 102 is exposed as the positive electrode of the R20 rechargeable battery 100, The light guide flange structure of the charge and discharge controller holder 152 made of the light guide type insulating material serves as a charging operation state of the R20 rechargeable battery 100; at the negative end of the R20 rechargeable battery 100, the negative of the outer package case 102 is exposed. The protruding structure of the extreme cover 103 serves as a negative electrode of the R20 rechargeable battery 100.

The R20 rechargeable battery 100, under the structural technical specifications of the R20 battery structure and the structural technical condition of the charge and discharge controller 150, adopts a housing negative electrode package unit lithium ion battery 110, a plurality of outer casing positive package monomer lithium ion battery 120 in parallel, and more A soft package encapsulating a single lithium ion battery 130 in parallel constitutes a structural method, as follows:

(1) The R20 rechargeable battery 100 is constructed by using a negative-case package single-cell lithium-ion battery 110:

Referring to FIG. 3 and FIG. 4, the outer casing of the negative electrode package single-cell lithium ion battery 110 and the bottom end of the lithium ion battery 110 are the negative electrode 112 of the lithium ion battery 110, and the other end of the cover is the positive electrode 111 of the lithium ion battery 110; The single-cell lithium ion battery 110 is a lithium ion battery in which an outer casing of a steel outer casing or other outer casing of a conductive material is a negative electrode. In the embodiment, under the condition that the cost of the universal rechargeable battery is lowered, the lithium ion battery 110 of the outer casing of the outer casing is packaged with a 3300 mAh lithium manganese oxide battery by using a R33520 steel shell.

Referring to FIG. 45, the integrated DC-DC step-down lithium ion battery charging control chip U1 used in the lithium ion battery charge and discharge control circuit of the embodiment adopts MGS2520A, and the integrated lithium ion battery charge and discharge detection and control chip U2 adopts MGS1700A, and is integrated. The DC-DC buck regulator U3 uses MGS3050; the main control parameters include: charging input voltage 4V ~ 6V, charging upper limit voltage (V _H ) 4.2V, maximum charging output current 2A (I _CHG ), full state determination current I _CHG /10, discharge low battery voltage 3.4V (V _L ), discharge cutoff voltage 3.0V (V _D ), maximum regulated output current 5A. The main control parameters of the general-purpose rechargeable battery of the present embodiment which can be realized on the basis of the present invention include: the charging input voltage is 5V±0.7V, and the maximum charging current (I _CHG ) is designed to be 1.0A (the maximum charging magnification of the lithium ion battery LIB is about 0.3). C), Lithium-ion battery LIB charging upper limit temperature T _{CH is} designed to be 45 ° C, lithium-ion battery LIB discharge upper limit temperature T _{DH is} designed to be 50 ° C, regulated output voltage 1.5V, low-voltage regulated output voltage 1.1V, maximum voltage regulation The output current is 5A (the maximum discharge rate of the lithium ion battery LIB is about 0.7C), and the storage capacity is about 7700mAh.

Referring to FIG. 1 to FIG. 6 , in the embodiment, the lithium ion battery LIB is a negative electrode package unit lithium ion battery 110, and the positive electrode 111 of the outer case negative package lithium ion battery 110 is a positive electrode of a lithium ion battery LIB. The negative electrode 112 of the negative electrode package unit lithium ion battery 110 is the negative electrode of the lithium ion battery LIB. The assembly step of forming the R20 rechargeable battery 100 by using the negative-case package single-cell lithium-ion battery 110 can be directly assembled according to the above assembly steps, and the heat dissipation principle after assembly is the same as the above-mentioned heat dissipation principle, and details are not described herein again.

Referring to FIG. 3 to FIG. 6 , FIG. 18 to FIG. 24 and FIG. 45 , the circuit connection relationship of the R20 rechargeable battery 100 composed of the single-capacitor negative-package single-cell lithium-ion battery 110 is assembled: soldered to the positive electrode end of V+ in FIG. 45 . The cover 101 serves as a positive electrode for the discharge output and the charge input of the R20 rechargeable battery 100; the positive electrode 111 of the negative electrode package unit lithium ion battery 110 is soldered to the positive electrode tab 161 soldered to the node Jb+ in FIG. 45, and the circuit connection meaning is equal to the case negative package The positive electrode 111 of the single-cell lithium ion battery 110 is connected to the node Jb+ in FIG. 45; through the outer package housing 102, the charging/discharging controller housing 151 of the V- is soldered in FIG. 45 and the negative electrode of the single-cell lithium ion battery 110 is soldered. The negative electrode end cover 103 of 112 is pressed to establish a circuit connection, and the circuit connection is equal to the negative electrode 112 of the single lithium ion battery 110 through the negative electrode end cover 103, the rechargeable battery outer package housing 102, and the charge and discharge controller housing 151. In the V-, the negative electrode end cap 103 becomes the negative electrode of the discharge output and the charge input of the R20 rechargeable battery 100.

(2) R20 rechargeable battery 100 consisting of several shells and a single-cell lithium-ion battery 120 connected in parallel:

Referring to FIG. 7 and FIG. 8 , the circular outer casing and the bottom end of the single-element lithium-ion battery 120 of the outer casing of the outer casing are the positive electrode 121 of the single-cell lithium ion battery 120 , and the convex cover at the other end is the negative electrode 122 of the single-cell lithium ion battery 120 . The outer surface of the circular outer casing is thermoplastically coated with an insulating covering sheath 123. The insulating covering sheath 123 covers the outer casing and exposes the bottom portion of the outer casing portion as the positive electrode of the single lithium ion battery 120 only at the bottom end. The outer casing of the outer casing of the lithium ion battery 120 is a lithium ion battery with a positive outer casing of an outer casing or other electrically conductive outer casing. In this embodiment, under the condition that the storage capacity of the general-purpose rechargeable battery is prioritized, the outer-case package single-cell lithium-ion battery 120 is packaged with a R11510 aluminum-clad 700 mAh high-energy lithium cobalt oxide battery.

Referring to FIG. 45, the integrated DC-DC step-down lithium ion battery charging control chip U1 used in the lithium ion battery charge and discharge control circuit of the embodiment adopts the MGS2520C, and the integrated lithium ion battery charge and discharge detection and control chip U2 adopts the MGS1700A, and is integrated. The DC-DC buck regulator chip U3 uses MGS3050; the main control parameters include: charging input voltage 4V ~ 6V, charging upper limit voltage (V _H ) 4.35V, maximum charging output current 2A (I _CHG ), full state determination current I _CHG /10, discharge low battery voltage 3.4V (V _L ), discharge cutoff voltage (V _D ) 3.0V, maximum regulated output current 5A. The main control parameters of the general-purpose rechargeable battery of the present embodiment which can be realized on the basis of the present invention include: the charging input voltage is 5V±0.7V, and the maximum charging current (I _CHG ) is designed to be 1.5A (the maximum charging magnification of the lithium ion battery LIB is about 0.3). C), Lithium-ion battery LIB charging upper limit temperature T _{CH is} designed to 45 ° C, lithium-ion battery LIB discharge upper limit temperature T _{DH is} designed to 55 ° C, regulated output voltage 1.5V, low-voltage regulated output voltage 1.1V, maximum voltage regulation The output current is 5A (the maximum discharge rate of the lithium ion battery LIB is about 0.5C), and the storage capacity is about 12000 mAh.

Referring to FIG. 1 and FIG. 2, FIG. 7 to FIG. 12, in the embodiment, the lithium ion battery The LIB consists of 7 shell positive-packaged single-cell lithium-ion batteries 120 connected in parallel, and the total charge capacity after parallel connection is 4900 mAh. The anode of the lithium ion battery LIB is the cathode current collecting tab 126 of the lithium ion battery parallel assembly 125, and the cathode of the lithium ion battery LIB is the cathode current collecting tab 127 of the lithium ion battery parallel assembly 125. The assembly process of the lithium-ion battery parallel assembly 125 and the lithium-ion battery parallel assembly 125 to form the R20 rechargeable battery 100 by using 7 shell positive-package single-cell lithium-ion batteries 120 in parallel, can be assembled and assembled according to the above assembly steps. The principle of heat dissipation is the same as that of the above heat dissipation, and will not be described here.

Referring to FIG. 7 to FIG. 12, FIG. 18 to FIG. 24 and FIG. 45, the circuit connection relationship of the R20 rechargeable battery 100 constructed by using the positive electrode package single-cell lithium-ion battery 120 in parallel is assembled: soldering the positive electrode end of V+ in FIG. The cover 101 serves as a positive electrode for discharging output and charging input of the R20 rechargeable battery 100; the positive current collecting tab 126 of the lithium ion battery parallel welded body 125 is soldered to the positive electrode tab 161 soldered to the node Jb+ in FIG. 45, and the circuit connection meaning is equal to The positive electrodes 121 of all the single-cell lithium-ion batteries 120 are connected in parallel to the node Jb+ in FIG. 45; through the outer package housing 102, the charge-discharge controller housing 151 soldered in FIG. 45 is connected in parallel with the lithium-ion battery. The negative electrode end cover 103 on the negative electrode current collecting pad 127 of the solder body 125 is pressed to establish a circuit connection, and the circuit connection meaning is equal to the negative electrode 122 of all the single lithium ion batteries 120 connected in parallel through the negative current collecting tab 127 and the negative electrode end cover 103. The rechargeable battery outer package case 102 and the charge and discharge controller case 151 are connected to V- in FIG. 45, so that the negative electrode end cover 103 becomes the negative electrode of the discharge output and the charge input of the R20 rechargeable battery 100.

(3) The R20 rechargeable battery 100 consisting of a plurality of soft packs and a single lithium ion battery 130 connected in parallel:

Referring to FIG. 13, the flexible packaged single-cell lithium-ion battery 130 has a positive electrode 131 at one end and a negative electrode 132 at the other end. The soft-packaged single-cell lithium-ion battery 130 is a soft package made of an aluminum-plastic composite film 133 or other materials. The packaged single-cell lithium-ion battery, in the embodiment, prior to the consideration of improving the safety performance and cycle life of the universal-type rechargeable battery, the soft-package-packaged single-cell lithium-ion battery 130 is packaged with a R11500 soft package 320 mAh lithium iron phosphate battery.

Referring to FIG. 45, the integrated DC-DC step-down lithium ion battery charging control chip U1 of the lithium ion battery charge and discharge control circuit of the embodiment adopts MGS2520B, and the integrated lithium ion battery charge and discharge detection and control chip U2 adopts MGS1700B, and is integrated. The DC-DC buck regulator U3 uses MGS3035; the main control parameters include: charging input voltage 4V ~ 6V, charging upper limit voltage 3.65V (V _H ), maximum charging output current 2A (I _CHG ), full state determination current I _CHG /10, discharge low battery voltage 3.0V (V _L ), discharge cutoff voltage 2.55V (V _D ), maximum regulated output current 3.5A. The main control parameters of the general-purpose rechargeable battery of this embodiment that can be realized on this basis include: the charging input voltage is 5V±0.7V, and the maximum charging current (I _CHG ) is designed to be 0.7A (the maximum charging magnification of the lithium ion battery LIB is about 0.3). C), Lithium-ion battery LIB charging upper limit temperature T _{CH is} designed to be 50 ° C, lithium-ion battery LIB discharge upper limit temperature T _{DH is} designed to be 60 ° C, regulated output voltage 1.5V, low-voltage regulated output voltage 1.1V, maximum voltage regulation The output current is 3.5A (the maximum discharge rate of the Li-ion battery LIB is about 0.7C), and the storage capacity is about 4500mAh.

Referring to FIG. 1 and FIG. 2, FIG. 13 to FIG. 17, in the embodiment, the lithium ion battery LIB is composed of seven soft packaged single lithium ion batteries 130 connected in parallel, and the total charged capacity after parallel connection is 2240 mAh. . The positive electrode of the lithium ion battery LIB is the positive electrode current collecting plate 136 of the lithium ion battery parallel welding body 135, and the negative electrode of the lithium ion battery LIB is the negative electrode current collecting plate 137 of the lithium ion battery parallel welding body 135. The assembly steps of the R20 rechargeable battery 100 using the seven soft-packaged single-cell lithium-ion batteries 130 in parallel to form the lithium-ion battery parallel assembly 135 and the lithium-ion battery parallel-welded body 135 include: Step 1. The positive current collecting plate 136 The insulating surface faces the insulating positioning bracket 138 and is inserted into the guiding slot of the insulating positioning bracket 138 of the single-cell lithium ion battery 130, so that the positive electrode tab 131 is provided by the positive current collecting plate 136. Corresponding to the ear holes, the positive electrode tabs 131 of each of the single-cell lithium-ion batteries 130 are bent to be placed on the positive current collecting plate; in step 2, the single-cell lithium-ion battery 130 is respectively used by the spot welding machine. The positive electrode tab 131 is welded to the positive electrode current collecting plate 136, so that the positive electrode current collecting plate 136 becomes a parallel positive electrode of the lithium ion battery parallel assembly 135; in step 3, the insulating surface of the negative electrode current collecting plate 137 is directed toward the insulating positioning bracket 139. The negative electrode tabs 132 of the respective single-cell lithium-ion batteries are respectively inserted along the guiding slots of the insulating positioning bracket 139, so that the negative electrode tabs 132 are pierced by the corresponding tab holes of the negative current collecting plate 137, and the respective monomers are Negative lithium battery 130 The pole tab 132 is bent to abut against the negative current collecting plate 137; in step 4, the negative electrode tab 132 of each single-cell lithium ion battery 130 and the negative electrode current collecting plate 137 are respectively welded by a spot welding machine to make the negative electrode set The flow plate 137 becomes a parallel negative electrode of the lithium ion battery parallel assembly 135; in step 5, the negative electrode end cover 103 is welded to the negative current collecting plate 137 of the lithium ion battery parallel assembly 135 by using a spot welder; The welding machine welds the positive electrode tab 161 of the charge and discharge controller 150 to the positive electrode current collector 136 of the lithium ion battery parallel assembly 135; step 7, the post-weld charge and discharge controller 150, the lithium ion battery parallel assembly 135, and The negative electrode end cover 103 is inserted into the outer package housing 102 in the axial direction, and is placed in the insulating positioning tool of the edge sealing machine to be pressed and fixed, and then the outer package housing 102 is rolled and sealed to complete the assembly of the R20 rechargeable battery 100; step 8 is completed in the assembly. The outer package housing 102 of the R20 rechargeable battery 100 is externally coated or coated with insulating and decorative materials to form a finished R20 rechargeable battery 100. The heat dissipation principle of the assembled R20 rechargeable battery 100 is the same as the heat dissipation principle described above, and will not be described herein.

The positive electrode current collecting plate 136 and the negative electrode current collecting plate 137 are composited by a metal plate having high thermal conductivity and high electrical conductivity and a high thermal conductivity insulating plate, and have strong strain resistance. The other side of the metal conductor is an insulator.

Referring to FIGS. 13 to 17, FIG. 18 to FIG. 24 and FIG. 45, the circuit connection relationship of the R20 rechargeable battery 100 constructed by using seven soft-packaged single-cell lithium-ion batteries 130 in parallel is as follows: welding the positive voltage of V+ in FIG. The extreme cover 101 serves as a positive electrode for the discharge output and charge input of the R20 rechargeable battery 100; the positive electrode current collector plate 136 of the lithium ion battery parallel soldering body 135 is soldered to the positive electrode solder tab 161 soldered to the node Jb+ in FIG. 45, and the circuit connection meaning is equal to The positive electrodes 131 of all the single-cell lithium-ion batteries 130 are connected in parallel to the node Jb+ in FIG. 45; through the outer package housing 102, the charge-discharge controller housing 151 soldered in FIG. 45 is connected in parallel with the lithium-ion battery. The negative electrode end cap 103 on the negative current collecting plate 137 of the soldering body 135 is pressed to establish a circuit connection. The circuit connection is equal to the negative electrode 132 of all the single-cell lithium ion batteries 130 connected in parallel through the negative current collecting plate 137 and the negative electrode end cover 103. The rechargeable battery outer package case 102 and the charge and discharge controller case 151 are connected to V- in FIG. 45, so that the negative electrode end cover 103 becomes the negative electrode of the discharge output and the charge input of the R20 rechargeable battery 100.

Referring to FIGS. 25 and 26, the R14 rechargeable battery 200 includes an outer package housing 202, a charge and discharge controller 250 housed in the outer package housing 202, and a lithium ion battery 210 (220) and a negative end cap 203. At the positive end of the R14 rechargeable battery 200, the protruding structure of the positive electrode end cover 201 of the outer package housing 202 is exposed as the positive electrode of the R14 rechargeable battery 200, and the charge and discharge controller holder 252 is made of a light guiding type insulating material. The light flange structure serves as a charging operation state of the R14 rechargeable battery 200; at the negative end of the R14 rechargeable battery 200, the protruding structure of the negative end cap 203 of the outer package housing 202 is exposed as the negative electrode of the R14 rechargeable battery 200 .

The R14 rechargeable battery 200, in the structural technical specification of the R14 rechargeable battery structure and the structural technical condition of the charge and discharge controller 250, adopts a positive electrode package of a single-cell lithium-ion battery 220, and a plurality of outer-case negative-package single-cell lithium-ion battery 210 in parallel. The structure method consists of the following:

(1) The R14 rechargeable battery 200 is constructed by using a positive electrode package of a single-cell lithium-ion battery 220:

Referring to FIG. 27 and FIG. 28, the circular outer casing and the bottom end of the positive electrode package single-cell lithium ion battery 220 are the positive electrode 221 of the lithium ion battery 220, and the other end of the cover is the negative electrode 222 of the lithium ion battery 220, in the lithium ion. The circular outer casing of the battery 220 is thermoplastically coated with a plastic insulating film 223. The plastic insulating film 223 covers the casing and exposes only the bottom of the outer casing portion at the bottom end as a positive electrode of the lithium ion battery 221; The ion battery 220 is a lithium ion battery with a positive outer casing encased by an aluminum outer casing or other conductive outer casing. In this embodiment, the outer casing package of the outer casing is preferentially improved under the condition of improving the storage capacity of the universal rechargeable battery. The body lithium ion battery 220 is packaged with a 2600 mAh nickel cobalt manganese manganate battery in a R25410 aluminum case.

Referring to FIG. 45, the integrated DC-DC step-down lithium ion battery charging control chip U1 used in the lithium ion battery charge and discharge control circuit of the embodiment adopts MGS2520A, and the integrated lithium ion battery charge and discharge detection and control chip U2 adopts MGS1700A, and is integrated. The DC-DC buck regulator chip U3 uses MGS3035; the main control parameters include: charging input voltage 4V ~ 6V, charging upper limit voltage 4.2V (V _H ), maximum charging output current 2A (I _CHG ), full state determination current I _CHG /10, discharge low battery voltage 3.4V (V _L ), discharge cutoff voltage 3.0V (V _D ), maximum regulated output current 3.5A. The main control parameters of the general-purpose rechargeable battery of the present embodiment which can be realized on the basis of the present invention include: the charging input voltage is 5V±0.7V, and the maximum charging current (I _CHG ) is designed to be 0.8A (the maximum charging magnification of the lithium ion battery LIB is about 0.3). C), Lithium-ion battery LIB charging upper limit temperature T _{CH is} designed to 45 ° C, lithium-ion battery LIB discharge upper limit temperature T _{DH is} designed to 55 ° C, regulated output voltage 1.5V, low-voltage regulated output voltage 1.1V, maximum voltage regulation The output current is 3.5A (the maximum discharge rate of the Li-ion battery LIB is about 0.7C), and the storage capacity is about 5900mAh.

Referring to FIG. 27 and FIG. 30, in the embodiment, the lithium ion battery LIB is a positive electrode package single-cell lithium ion battery 220, and the positive electrode 221 of the positive electrode package single-cell lithium ion battery 220 is a positive electrode of a lithium ion battery LIB. The negative electrode 222 of the positive electrode package single-cell lithium ion battery 220 is the negative electrode of the lithium ion battery LIB. The assembling step of assembling the R14 rechargeable battery 200 by using the positive electrode package single-cell lithium ion battery 220 can be directly assembled according to the above assembly steps, and the heat dissipation principle after assembly is the same as the above heat dissipation principle, and details are not described herein again.

Referring to FIGS. 27 to 30, FIGS. 37 to 43 and FIG. 45, the circuit connection relationship of the R14 rechargeable battery 200 assembled by using the positive electrode package single-cell lithium ion battery 220 includes: welding the positive electrode end cover of V+ in FIG. 201 is used as the positive electrode of the discharge output and the charging input of the R14 rechargeable battery 200; the positive electrode 221 of the single-cell lithium-ion battery 220 is soldered to the positive electrode tab 261 soldered to the node Jb+ in FIG. 45, and the circuit connection meaning is equal to that of the single-cell lithium-ion battery 220. The positive electrode 221 is connected to the node Jb+ in FIG. 45; through the outer package housing 202, the charge and discharge controller case 251 soldered in FIG. 45 and the negative electrode end cover 203 soldered to the negative electrode 222 of the single-cell lithium ion battery 220 are pressed. The circuit connection is established, and the circuit connection is equal to the negative electrode 222 of the single-cell lithium-ion battery 220. The negative electrode end cover is connected to the V- in FIG. 45 through the negative electrode end cover 203, the outer package housing 202, and the charge and discharge controller housing 251. 203 becomes the negative electrode of the discharge output and the charge input of the R14 rechargeable battery 200.

(2) Using a plurality of outer casings and a single-package lithium-ion battery 210 in parallel to form an R14 rechargeable battery 200:

Referring to FIG. 31 and FIG. 32, the circular outer casing and the bottom end of the single-capacitor lithium-ion battery 210 of the outer casing are the negative electrode 212 of the single-cell lithium ion battery 210, and the other end of the cover is the positive electrode 211 of the single-cell lithium-ion battery 210. The outer casing of the outer casing of the lithium ion battery 210 is a steel outer casing Or the outer casing of the other conductive material outer casing is a lithium ion battery with a negative electrode. In the embodiment, the lithium ion battery 210 of the negative electrode package of the outer casing is packaged in a R10410 steel shell under the condition of improving the storage capacity of the universal rechargeable battery. 500mAh ordinary lithium cobalt oxide battery.

Referring to FIG. 45, the integrated DC-DC step-down lithium ion battery charging control chip U1 used in the lithium ion battery charge and discharge control circuit of the embodiment adopts MGS2520A, and the integrated lithium ion battery charge and discharge detection and control chip U2 adopts MGS1700A, and is integrated. The DC-DC buck regulator chip U3 uses MGS3035; the main control parameters include: charging input voltage 4V ~ 6V, charging upper limit voltage 4.2V (V _H ), maximum charging output current 2A (I _CHG ), full state determination current I _CHG /10, discharge low battery voltage 3.4V (V _L ), discharge cutoff voltage 3.0V (V _D ), maximum regulated output current 3.5A. The main control parameters of the general-purpose rechargeable battery of the present embodiment which can be realized on the basis of the present invention include: the charging input voltage is 5V±0.7V, and the maximum charging current (I _CHG ) is designed to be 0.6A (the maximum charging magnification of the lithium ion battery LIB is about 0.3). C), Lithium-ion battery LIB charging upper limit temperature T _{CH is} designed to 45 ° C, lithium-ion battery LIB discharge upper limit temperature T _{DH is} designed to 55 ° C, regulated output voltage 1.5V, low-voltage regulated output voltage 1.1V, maximum voltage regulation The output current is 3.5A (the maximum discharge rate of the Li-ion battery LIB is about 0.9C), and the storage capacity is about 4600mAh.

Referring to 33 and 34, in the embodiment, the lithium ion battery LIB is composed of four outer casing negative package lithium ion batteries 210 connected in parallel, and the total charge capacity after parallel connection is 2000 mAh. The anode of the lithium ion battery LIB is the cathode current collecting plate 216 of the lithium ion battery parallel assembly 215, and the cathode of the lithium ion battery LIB is the cathode current collecting plate 217 of the lithium ion battery parallel assembly 215. The assembly process of the R14 rechargeable battery 200 using the four-shell negative-package single-cell lithium-ion battery 210 in parallel to form the lithium-ion battery assembly 215 and the lithium-ion battery parallel assembly 215 can be directly assembled according to the above assembly steps, and after assembly. The heat dissipation principle is the same as the above heat dissipation principle, and will not be described here.

Referring to FIGS. 31 to 43 and FIG. 45, the four-shell negative-cell single-cell lithium-ion battery 210 is connected in parallel with the solder body 215. The circuit connection relationship after the assembly of the R14 rechargeable battery 200 is completed: the positive electrode end of the V+ is soldered in FIG. The cover 201 serves as a positive electrode for the discharge output and the charging input of the R14 rechargeable battery 200; the positive current collecting tab 216 of the lithium ion battery parallel welded body 215 is soldered to the positive electrode tab 261 soldered to the node Jb+ in FIG. 45, and the circuit connection meaning is equal to The anodes 211 of all the single-cell lithium-ion batteries 210 are connected in parallel to the node Jb+ in FIG. 45; through the outer package housing 202, the charge-discharge controller housing 251 soldered in FIG. 45 is connected in parallel with the lithium-ion battery. The negative electrode end cap 203 on the negative current collecting tab 217 of the soldering body 215 is pressed to establish a circuit connection. The circuit connection is equal to the negative electrode 212 of all the single lithium ion batteries 210 connected in parallel through the negative current collecting tab 217 and the negative electrode end cap. 203, the outer package housing 202 and the charge and discharge controller housing 251 are connected to V- in FIG. 45, so that the negative electrode end cover 203 becomes the discharge output of the R14 rechargeable battery 200. And the negative electrode of the charging input.

Referring to FIG. 44, the present invention uses a universal rechargeable battery composed of a lithium ion battery, and uses a computer USB interface or a universal lithium ion battery charging adapter as a charging power source to charge the universal rechargeable battery. The charging device circuit of the single-cell rechargeable battery is the simplest structure with two electrodes and two wires, one of which connects the positive pole of the charging power source to the positive electrode of the universal rechargeable battery, and the other connects the negative pole of the charging power source. Connect to the negative electrode of the universal rechargeable battery. The charging circuit of the R14 rechargeable battery has the same wiring principle as the R20 rechargeable battery; the universal rechargeable battery can be directly connected in parallel (including different models), but the maximum output current of the charging power source is smaller than the maximum charging current of all the rechargeable batteries after the parallel connection. At the time of the sum, the required charging time is longer.

Please refer to FIG. 46 , which is a schematic diagram of a comparison of a lithium ion battery output voltage curve and a general-purpose rechargeable battery output voltage curve in a general-purpose rechargeable battery discharge process using a lithium ion battery. Among them, LC is the output voltage curve of the lithium cobalt oxide (LiCoO ₂ ) battery used in the general-purpose rechargeable battery; LF is the output voltage of the lithium iron phosphate (LiFePO ₄ ) battery used in the general-purpose rechargeable battery. Curve, LE is the output voltage curve of the general-purpose rechargeable battery discharge process; the correspondence between the output voltage of the lithium-ion battery and the output voltage of the general-purpose rechargeable battery after the general-purpose rechargeable battery is fully charged is: the output voltage of the lithium-ion battery is V _LIB >V _L interval, the general-purpose rechargeable battery output voltage is 1.5V; in the lithium-ion battery output voltage is V _L ≥V _LIB >V _D range, the general-purpose rechargeable battery output voltage is 1.1V; when the lithium-ion battery output voltage V _LIB When ≤V _D , the universal rechargeable battery turns off the output. The lithium ion battery discharge curve described in the figure is a schematic curve under the condition of an ambient temperature of about 25 ° C and a lithium ion battery discharge rate of about 0.4 C. Under different ambient temperature and discharge rate conditions, the lithium ion battery output voltage V The functional relationship with time t will be different from the one shown in Figure 46. The lithium ion battery composed of different positive electrode system, negative electrode system, electrolyte solution and battery structure, the discharge curve, the terminal voltage V _H at the completion of charging, the discharge cutoff voltage V _D and the like are different from those indicated in Fig. 46.

The above-mentioned parameters of the present invention, the control parameter configuration of the embodiment, the lithium ion battery design reference of the embodiment, and the like are merely supplementary descriptions of the technical principles of the present invention, and are not intended to limit the technical principles of the present invention.

In summary, the universal rechargeable battery comprising the lithium ion battery of the invention has a regulated output of 1.5V and a regulated output of 1.1V when the lithium ion battery is low, and can be used with a computer USB interface or a universal lithium ion battery charging adapter. It is charged, its structure and discharge performance meet the technical specifications of GB/T 8897.2-2013 and IEC 60086-2, which can directly replace the existing general-purpose primary battery and nickel-hydrogen rechargeable battery, with high performance and charging control. The lithium ion battery is assembled in the same outer package by pressing and the two are connected through the positive electrode pads to prevent contact ablation during high current charging and discharging, and the charging controller and the lithium ion battery are improved. The reliability of the pole connection, the structure of the charge and discharge controller and the assembly process are simple, which is conducive to automated mass production assembly. The controller housing is used as the electrode structure of the lithium ion battery negative electrode to connect to the lithium ion battery charge and discharge control circuit, which saves a large The internal space of the charge and discharge controller eliminates the moving parts that hinder the sealing of the charge and discharge controller, and can realize the waterproof sealing of the charge and discharge controller, prevent the circuit from being damaged after moisture and water immersion, and is beneficial to improving the storage capacity of the universal rechargeable battery. The production cost is reduced. At the same time, the charging and discharging controller is equipped with a lithium ion battery charging control circuit, a lithium ion battery detecting circuit and a DC-DC buck type voltage stabilizing discharge circuit, thereby realizing the control and protection of the charging and discharging process of the lithium ion battery. The cycle life and safety of the lithium ion battery are improved; the control method of the universal rechargeable battery using the lithium ion battery according to the present invention is charged by setting the lithium ion battery according to the charging and discharging working technical conditions required for the lithium ion battery. Control circuit, lithium ion battery detection circuit and DC-DC buck regulator discharge circuit Control and protect the charging and discharging process of the lithium ion battery, and realize the control and protection of the charging mode, charging rate, overcharging, overdischarging, discharging rate and charging and discharging overheating of the charging and discharging process of the lithium ion battery. Lithium-ion battery cycle life and safety, and achieve a universal rechargeable battery regulated output of 1.5V and a regulated output of 1.1V when the lithium-ion battery is low, enabling the use of computer USB interface or universal lithium-ion battery charging The adapter charges the universal rechargeable battery, realizes the general-purpose rechargeable battery structure and discharge performance in accordance with GB/T 8897.2-2013 and IEC 60086-2 technical specifications, and can directly replace the existing general-purpose primary battery and nickel-hydrogen rechargeable battery, and It is superior to the existing general-purpose primary battery in terms of reversible charge and discharge, constant output voltage and environmental protection, with a nominal output voltage of 1.5V, constant output voltage during discharge, short charging time, no memory effect and cycle life. The long-term aspect is superior to the existing nickel-hydrogen rechargeable battery, and comprehensively improves the performance of the universal rechargeable battery.

In the above, various other changes and modifications can be made in accordance with the technical solutions and technical concept of the present invention, and all such changes and modifications are within the scope of the claims of the present invention. .

Claims

A general-purpose rechargeable battery comprising a lithium ion battery, comprising: an outer package housing, and a charge and discharge controller, a positive electrode soldering piece, a lithium ion battery, and a negative electrode end cover which are sequentially assembled and assembled in the outer package housing; The charge and discharge controller includes: a charge and discharge controller housing, and a charge and discharge control circuit soldering body and a charge and discharge controller bracket disposed in the charge and discharge controller housing, wherein the charge and discharge control circuit is soldered to the body a lithium ion battery charge and discharge control circuit, wherein a positive electrode of the lithium ion battery is connected to the lithium ion battery charge and discharge control circuit through a positive electrode soldering piece, and the lithium ion battery charge and discharge control circuit comprises: soldering on the circuit substrate and respectively Lithium-ion battery, positive terminal cover, and lithium ion battery charging control circuit, lithium ion battery detection circuit, and DC-DC step-down type electrically connected through the charge and discharge controller housing and the outer package housing and the negative end cover Pressure discharge circuit.
The universal rechargeable battery comprising a lithium ion battery according to claim 1, wherein one end of the charge and discharge controller is provided with a positive electrode end cover exposed to the outer package housing, and the positive contact point is used as a universal The positive electrode of the rechargeable battery; the negative end cover is provided with a negative contact point exposed to the outer package housing, and the negative contact point serves as a negative electrode of the universal rechargeable battery.
The universal rechargeable battery comprising a lithium ion battery according to claim 1, wherein the lithium ion battery is selected from a negative electrode package single-cell lithium ion battery, a positive electrode package single-cell lithium ion battery, or a current collecting device. The number of connected parallel capacitors is negatively packaged with a single-cell lithium-ion battery, several parallel-connected positive-electrode packaged single-cell lithium-ion batteries, and several parallel-packed soft-packaged single-cell lithium-ion batteries; the universal rechargeable battery is R20 A rechargeable battery or an R14 rechargeable battery; the universal rechargeable battery uses a computer USB interface or a universal lithium ion battery charging adapter as a charging power source to charge the universal rechargeable battery.
The universal rechargeable battery comprising a lithium ion battery according to claim 1, wherein the positive electrode end cover, the outer package housing, the negative electrode end cover, the charge and discharge controller housing and the positive electrode solder tab are both made to have high thermal conductivity. a metal material with high conductivity and high electrical conductivity; the forming process of the outer package shell is formed by prefabricating thin-walled pipe, or by sheet metal forming, or by sheet metal forming; the charging and discharging controller housing The forming process is formed by prefabricating thin-walled pipe, or by sheet metal forming, or by sheet rolling; the charging and discharging controller bracket is made of light-guiding insulating material for mounting charging and discharging control circuit welding The light signal from the light emitting diode used to display the state of charge of the universal rechargeable battery is conducted to the outside of the universal rechargeable battery.
The universal rechargeable battery comprising a lithium ion battery according to claim 1, wherein the universal rechargeable battery has a charging state in which a charging power source is connected and a discharging state in a charging power source, and in the charging state, the lithium battery The ion battery detecting circuit detects the temperature of the lithium ion battery, and when the temperature of the lithium ion battery rises to the set charging upper limit temperature, controls the lithium ion battery charging control circuit to stop charging the lithium ion battery, and the temperature of the lithium ion battery When the temperature drops below the set charging upper limit temperature minus the difference temperature, the charging is resumed again; in the discharging state, the lithium ion battery detecting circuit detects the temperature of the lithium ion battery, and the temperature of the lithium ion battery rises to the set discharge. At the upper limit temperature, the DC-DC buck regulator discharge circuit is controlled to stop the regulated output, and the regulated output is restored again when the temperature of the lithium ion battery drops below the set upper limit temperature minus the difference temperature.
A universal rechargeable battery comprising a lithium ion battery according to claim 5, wherein said lithium ion battery detecting circuit detects an applied charging voltage when said universal charging battery is in a charging state, and controls DC-DC The step-down type regulated discharge circuit turns off the regulated output, the lithium ion battery charging control circuit detects the output voltage of the lithium ion battery, and selects trickle charging and constant current charging according to the output voltage state of the lithium ion battery. Or charging a lithium ion battery by a constant voltage charging method, wherein the charging operation circuit of the lithium ion battery detects a maximum allowable output current of the charging power source, and when the maximum allowable output current of the charging power source is less than a set charging current value, Charging the lithium ion battery with the maximum allowable output current of the charging power source, and stopping charging the lithium ion battery when the charging current of the constant voltage charging state drops to the set full charging determination current; when the universal rechargeable battery is in a discharging state The lithium ion battery detection circuit controls a DC-DC buck type regulated discharge circuit to turn on a regulated output. The lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the output feedback depth of the DC-DC buck regulator discharge circuit according to the output voltage state of the lithium ion battery, and the output voltage of the lithium ion battery is higher than the low battery voltage. At V L , the control DC-DC buck regulator discharge circuit reduces the output voltage of the lithium ion battery to the first output voltage regulated output, and controls when the output voltage of the lithium ion battery is equal to or lower than the low battery voltage V L . The DC-DC buck regulator discharge circuit reduces the output voltage of the lithium ion battery to the second output voltage regulated output, and controls the DC-DC buck when the output voltage of the lithium ion battery is equal to or lower than the discharge cutoff voltage V D . Type regulated discharge circuit closes the regulated output;

The V L is a set lithium ion battery low battery voltage, V D is a set lithium ion battery discharge cutoff voltage, the first output voltage is 1.35V to 1.725V, and the second output voltage is 0.9V ～1.35V; Preferably, the first output voltage is 1.5V and the second output voltage is 1.1V.
A universal rechargeable battery comprising a lithium ion battery according to claim 1, wherein said charge and discharge controller structure is configured to be equipped with charge and discharge control in a charge and discharge controller housing. Bracket for charging and discharging control circuit, and sealing and sealing the charging and discharging controller housing, and then crimping the charging/discharging controller housing to the V-side of the lithium ion battery charge and discharge control circuit of the PCB circuit substrate The structure of the soldering and discharging body of the charging and discharging control circuit: the components and the positive electrode end cover of the lithium ion battery charge and discharge control circuit are soldered on the front surface of the PCB circuit substrate, and the positive electrode soldering piece is soldered on the back surface of the PCB circuit substrate. The charging and discharging controller housing is welded to the PCB circuit substrate.
The universal rechargeable battery comprising a lithium ion battery according to claim 1, wherein the lithium ion battery charge and discharge control circuit comprises: a lithium ion battery, an integrated DC-DC step-down lithium ion battery charge control chip, and an integration Lithium-ion battery charge and discharge detection and control chip, integrated DC-DC buck regulator chip, first resistor, second resistor, third resistor, fourth resistor, fifth resistor, sixth resistor, seventh resistor, Eight resistance, ninth resistance, tenth resistance, eleventh resistance, twelfth resistance, negative temperature coefficient thermistor, light emitting diode, first inductance, second inductance, first capacitance, second capacitance, third capacitance And a fourth capacitor; wherein, the integrated DC-DC step-down lithium ion battery charging control chip, the first resistor, the second resistor, the third resistor, the first capacitor, the second capacitor, the fourth capacitor, the first inductor, and the light emitting The diode constitutes a lithium ion battery charging control circuit, and integrates a lithium ion battery charge and discharge detection and control chip, a fourth resistor, a fifth resistor, a sixth resistor, and a negative temperature coefficient thermistor to form a lithium ion battery. Detection circuit, integrated DC-DC buck regulator chip, seventh resistor, eighth resistor, ninth resistor, tenth resistor, eleventh resistor, twelfth resistor, second inductor, second capacitor, third The capacitor and the fourth capacitor constitute a DC-DC step-down voltage regulator discharge circuit; the anode of the lithium ion battery is connected to the node Jb+, and the cathode of the lithium ion battery is connected to the V- terminal of the charge and discharge control circuit of the lithium ion battery; the integrated DC The charging power input pin of the -DC step-down lithium-ion battery charging control chip is connected to the V+ terminal of the lithium-ion battery charge and discharge control circuit and the positive terminal of the fourth capacitor, and the power supply of the DC-DC step-down lithium ion battery charging control chip is integrated. The ground pin is connected to the negative pole of the second capacitor, the negative pole of the fourth capacitor, and the V- terminal of the charge and discharge control circuit of the lithium ion battery, and the signal ground pin of the integrated DC-DC step-down lithium ion battery charge control chip is connected to the first capacitor. The negative pole, the negative pole of the fourth capacitor, and the V- terminal of the charge and discharge control circuit of the lithium ion battery, the thermistor of the integrated DC-DC step-down lithium-ion battery charge control chip is connected to the integrated DC-DC step-down type. Lithium-ion battery charging control chip Signal ground pin, integrated DC-DC step-down lithium-ion battery charge control chip charging output and detection pin connected to the positive electrode of the lithium-ion battery and the positive electrode of the second capacitor, integrated DC-DC step-down lithium-ion battery charge control The charging state output pin of the chip is connected to the cathode of the LED, and the charging current setting pin of the integrated DC-DC step-down lithium ion battery charging control chip is connected to one end of the second resistor, and the integrated DC-DC step-down lithium ion battery is charged. The output tracking detection pin of the control chip is connected to the positive pole of the first capacitor and one end of the first inductor, and the integrated DC-DC step-down lithium ion battery charging control core The modulation output pin of the chip is connected to the other end of the first inductor, and the charging enable pin of the integrated DC-DC step-down lithium ion battery charging control chip is integrated with the charging control pin of the lithium ion battery charge and discharge detecting and controlling chip. One end of the third resistor; the lithium ion battery access pin of the integrated lithium ion battery charge and discharge detection and control chip is connected to the positive pole of the lithium ion battery, and the lithium ion battery charge and discharge detection and control chip is connected to the power ground pin of the lithium ion battery. The V-terminal of the ion battery charge and discharge control circuit, the integrated lithium ion battery charge and discharge detection and control chip temperature detection setting pin connection node P1, integrated lithium ion battery charge and discharge detection and control chip NTC voltage detection pin junction voltage Point P2, integrated lithium-ion battery charge and discharge detection and control chip charging power supply pin is connected to the V+ end of the lithium-ion battery charge and discharge control circuit, integrated lithium-ion battery charge and discharge detection and control chip charging control pin is connected to the integrated DC -DC buck-type lithium-ion battery charge control chip charging enable pin, integrated lithium-ion battery charge and discharge detection and control chip discharge control The output enable pin of the integrated DC-DC buck regulator chip, the discharge feedback control pin of the integrated lithium-ion battery charge and discharge detection and control chip is connected to the node P3, and the charge of the lithium-ion battery charge and discharge detection and control chip is integrated. The remaining power release pin is connected to one end of the sixth resistor; the power supply input pin of the integrated DC-DC buck regulator chip is connected to the positive pole of the lithium ion battery and the positive pole of the second capacitor, and the integrated DC-DC step-down type The signal power input pin of the voltage regulator chip is connected to the positive pole of the lithium ion battery and the positive pole of the second capacitor, and the power ground pin of the integrated DC-DC buck regulator chip is connected to the negative pole of the second capacitor and the cathode of the fourth capacitor and The V-terminal of the charge and discharge control circuit of the lithium ion battery, the signal ground pin of the integrated DC-DC buck regulator chip is connected to the negative pole of the second capacitor, the negative pole of the third capacitor, and the V- of the charge and discharge control circuit of the lithium ion battery. The external error compensation pin of the integrated DC-DC buck regulator chip is connected to one end of the twelfth resistor, and the external set pin of the integrated DC-DC buck regulator chip is connected to the eleventh resistor. One end, integrated DC-DC step-down type The feedback input pin of the chip is connected to the voltage dividing point P4, and the output enable pin of the integrated DC-DC buck regulator chip is connected to the discharge control pin of the lithium ion battery charge and discharge detection and control chip and the end of the seventh resistor. The modulation output pin of the integrated DC-DC buck regulator chip is connected to one end of the second inductor; the first resistor is a current limiting resistor of the LED, and the first resistor is connected to the V+ of the charge and discharge control circuit of the lithium ion battery. The other end is connected to the anode of the LED; the second resistor is a charging current setting resistor of the integrated DC-DC step-down lithium ion battery charging control chip, and the second resistor is connected to the integrated DC-DC step-down lithium ion battery at one end. The charging current setting pin of the charging control chip is connected to the signal ground pin of the DC-DC step-down lithium ion battery charging control chip; the third resistor is an integrated DC-DC step-down lithium ion battery charging control a pull-up resistor of the chip charging enable pin, the third resistor is connected to the charging enable pin of the DC-DC step-down lithium ion battery charging control chip, and the other end is connected to the positive pole of the lithium ion battery; The dividing point P2 is a bias voltage dividing resistors, a fourth resistor end of the positive electrode of lithium ion batteries, the other end of the resistor in the fifth node P1; the fifth resistor is an upper bias voltage dividing resistor of the voltage dividing point P2, the fifth resistor is connected to the fourth resistor at the node P1, and the other end is connected to the negative temperature coefficient thermistor at the voltage dividing point P2; The sixth resistor is a charging residual current discharging current limiting resistor of the fourth capacitor, and the sixth resistor is connected to the remaining power releasing pin of the lithium ion battery charging and discharging detecting and controlling chip, and the other end is connected to the positive pole of the fourth capacitor; The seven resistors are pull-up resistors of the output enable pin of the integrated DC-DC buck regulator chip. The seventh resistor is connected to the output enable pin of the integrated DC-DC buck regulator chip and the other end is connected to the lithium ion. The eighth resistor is an upper bias voltage dividing resistor of the voltage dividing point P4, the eighth resistor is connected to the V+ end of the lithium ion battery charge and discharge control circuit, and the other end is connected to the ninth resistor at the voltage dividing point P4; The ninth resistor is a lower bias voltage dividing resistor of the voltage dividing point P4, the ninth resistor has one end connected to the eighth resistor at the voltage dividing point P4, and the other end is connected to the tenth resistor at the node P3; the tenth resistor is a voltage dividing Point P4's lower bias voltage divider resistor, the tenth resistor is connected to the ninth resistor at the end P3, the other end is connected to the power ground pin of the integrated lithium-ion battery charge and discharge detection and control chip and the signal ground pin of the integrated DC-DC buck regulator chip; the eleventh resistor is an integrated DC-DC buck. The oscillating frequency setting resistor of the type voltage regulator chip, the eleventh resistor is connected to the external setting pin of the oscillator of the integrated DC-DC buck regulator chip, and the other end is connected with the integrated DC-DC buck regulator chip. Signal ground pin; the twelfth resistor is an error amplifier compensation loop resistor of the integrated DC-DC buck regulator chip, and the twelfth resistor is connected to the error amplifier external compensation of the integrated DC-DC buck regulator chip at one end. The other end of the pin is connected to one end of the third capacitor; the negative temperature coefficient thermistor is a negative temperature coefficient thermistor of the lithium ion battery temperature sensing, and the negative temperature coefficient thermistor is connected to the fifth resistor at the voltage dividing point P2, the other end is connected to the power ground pin of the lithium ion battery charge and discharge detection and control chip, and the body insulation part of the negative temperature coefficient thermistor is abutted on the heat conduction circuit structure connected with the output electrode of the lithium ion battery; Diode is The charging state of the DC-DC step-down lithium-ion battery charging control chip shows the light-emitting diode, the anode of the light-emitting diode is connected to the other end of the first resistor, and the cathode of the light-emitting diode is integrated with the DC-DC step-down lithium ion battery charging control. The charging state output pin of the chip; the first inductor is an output filtering and compensating inductor of the integrated DC-DC step-down lithium ion battery charging control chip, and the first inductor is connected with an integrated DC-DC step-down lithium ion battery charging The output of the control chip tracks the detection pin and the positive pole of the first capacitor, and the other end is connected to the modulation output pin of the DC-DC step-down lithium ion battery charging control chip; the second inductor is an integrated DC-DC step-down type The output filter of the voltage regulator chip and the compensation inductor, the second inductor is connected to the modulation output pin of the DC-DC buck regulator chip at one end, and the positive terminal of the fourth capacitor and the V+ terminal of the charge and discharge control circuit of the lithium ion battery are connected to the other end. The first capacitor is a charging output filter and a compensation capacitor of the integrated DC-DC step-down lithium ion battery charging control chip, and the positive pole of the first capacitor is integrated with a DC-DC step-down lithium ion battery One end of the charging control chip output tracking detection pin and a first inductor, a first capacitor connected to a negative integration DC-DC step-down lithium-ion battery charge control chip power ground pin, integrated DC-DC step-down lithium-ion battery charge control chip signal ground pin and lithium-ion battery charge and discharge control circuit V-end; The second capacitor is a charging output filter capacitor of the integrated DC-DC step-down lithium ion battery charging control chip and an input filter and compensation capacitor of the integrated DC-DC buck regulator chip, and the positive pole of the second capacitor is integrated with DC- The charging output and detection pin of the DC step-down lithium-ion battery charge control chip, the signal power input pin of the integrated DC-DC buck regulator chip, and the power supply input of the integrated DC-DC buck regulator chip Foot, the negative pole of the second capacitor is connected to the power ground pin of the DC-DC step-down lithium-ion battery charge control chip, the signal ground pin of the integrated DC-DC step-down lithium-ion battery charge control chip, integrated DC-DC The signal ground pin of the buck regulator chip and the power ground pin of the integrated DC-DC buck regulator chip; the third capacitor is the error amplifier compensation loop capacitor of the integrated DC-DC buck regulator chip One end of the third capacitor is connected to the twelfth The other end is connected to the signal ground pin of the integrated DC-DC buck regulator chip; the fourth capacitor is the input filter and compensation capacitor and integration of the integrated DC-DC buck lithium-ion battery charge control chip. DC-DC buck regulator chip output filter and compensation capacitor, the fourth capacitor is connected to the DC-DC buck lithium-ion battery charge control chip charging power input pin and second inductor and lithium-ion battery charge The V+ terminal of the discharge control circuit, the negative terminal of the fourth capacitor is connected to the power ground pin of the DC-DC step-down lithium ion battery charging control chip, the power ground pin of the integrated DC-DC buck regulator chip, and the integrated DC -DC step-down lithium-ion battery charge control chip signal ground pin and signal ground pin of integrated DC-DC buck regulator chip; the model of the integrated DC-DC buck lithium-ion battery charge control chip For the MGS2520A or MGS2520B or MGS2520C, the integrated lithium ion battery charge and discharge detection and control chip is of the MGS1700A or MGS1700B, and the integrated DC-DC buck regulator chip is of the MGS3050 or MGS3035.
A general-purpose rechargeable battery control method comprising a lithium ion battery, wherein the universal rechargeable battery comprising a lithium ion battery comprises: an outer package housing, and a charge and discharge controller assembled in turn in the outer package housing The positive electrode soldering piece, the lithium ion battery, and the negative electrode end cover; the charging and discharging controller comprises: a charging and discharging controller housing, and a charging and discharging control circuit welding body disposed in the charging and discharging controller housing, and charging and discharging control The charging and discharging control circuit of the charging and discharging control circuit is equipped with a lithium ion battery charging and discharging control circuit, and the lithium ion battery charging and discharging control circuit comprises: welding on the circuit substrate and respectively respectively with a lithium ion battery, a positive electrode end cover, And a lithium ion battery charging control circuit, a lithium ion battery detecting circuit, and a DC-DC buck type voltage stabilizing discharging circuit electrically connected to the negative electrode end cover through the charging and discharging controller housing and the outer package housing;

The charging and discharging control method of the universal type rechargeable battery includes the following control conditions:

Control condition one, when the charging power source is connected to the universal rechargeable battery, the lithium ion battery is inspected The measuring circuit detects the charging voltage that is connected, controls the DC-DC buck regulator discharge circuit and the lithium ion battery charging control circuit to enter the charging state, and in the charging state, the DC-DC buck regulator discharge circuit turns off the regulated output. The lithium ion battery charging control circuit is turned on to charge the lithium ion battery;

Controlling condition 2, in the charging state, the lithium ion battery charging control circuit detects an output voltage of the lithium ion battery, and selects trickle charging, constant current charging or constant voltage charging according to an output voltage state of the lithium ion battery. The method is to charge a lithium ion battery. During the charging process, the lithium ion battery charging control circuit detects a maximum allowable output current of the charging power source. When the maximum allowable output current of the charging power source is less than a set charging current value, the charging power source is charged. The maximum allowable output current charges the lithium ion battery, and stops charging the lithium ion battery when the charging current of the constant voltage charging state drops to the set full state determining current;

Control condition three, when the charging power source is separated from the universal charging battery, the lithium ion battery detecting circuit detects that the charging power source is detached, and releases excess energy stored by the filter capacitor during charging, so that the positive and negative electrodes of the universal rechargeable battery are The voltage quickly drops to or below the maximum open circuit voltage, and controls the DC-DC buck regulator discharge circuit and the lithium ion battery charge control circuit to enter a discharge state. In the discharge state, the lithium ion battery charge control circuit turns off the charge output, DC -DC buck regulator discharge circuit turns on the regulated discharge, and according to the control condition four regulated discharge output;

Control condition four, in the discharge state, the lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the output feedback depth of the DC-DC buck regulator discharge circuit, and the output voltage of the lithium ion battery is higher than the low battery When the voltage is V L , the DC-DC buck regulator discharge circuit is controlled to reduce the output voltage of the lithium ion battery to the first output voltage regulated output; when the output voltage of the lithium ion battery is higher than the discharge cutoff voltage V D but equal to or lower than When the battery voltage V L is low, the DC-DC buck regulator discharge circuit is controlled to reduce the output voltage of the lithium ion battery to the second output voltage regulated output, and the output voltage after charging the lithium ion battery is higher than V L +Δ When V 1 , the DC-DC buck regulator discharge circuit is controlled to restore the first output voltage regulated output; V L is the set lithium ion battery low battery voltage, and ΔV 1 is the set lithium ion battery low battery voltage. Detecting the threshold voltage of the threshold, V D is the set discharge threshold of the lithium ion battery;

Control condition 5, in the discharge state, the lithium ion battery detection circuit monitors the output voltage of the lithium ion battery, and controls the DC-DC step-down mode when the output voltage of the lithium ion battery drops to be equal to or lower than the discharge cutoff voltage V D The voltage discharge circuit turns off the regulated output, and when the output voltage of the lithium ion battery is higher than V D +ΔV 2 , the voltage output is restored according to the control condition 4; ΔV 2 is the set discharge voltage of the lithium ion battery. Detecting the threshold voltage of the threshold;

Control condition six, in the charging process of the universal rechargeable battery, the lithium ion battery detecting circuit detects the temperature of the lithium ion battery, and controls the charging of the lithium ion battery when the temperature of the lithium ion battery rises to the charging upper limit temperature T CH The control circuit stops charging the lithium ion battery, and resumes charging again when the temperature of the lithium ion battery drops below T CH -ΔT 1 , T CH is the set lithium ion battery charging upper limit temperature, ΔT 1 is the setting The temperature difference corresponding to the hysteresis voltage of the T CH detection threshold;

Control condition seven, in the discharge process of the universal rechargeable battery, the lithium ion battery detection circuit detects the temperature of the lithium ion battery, and controls the DC-DC voltage drop when the temperature of the lithium ion battery rises to the discharge upper limit temperature T DH The type regulated discharge circuit stops the regulated output, and restores the regulated output again when the temperature of the lithium ion battery drops below T DH -ΔT 2 , and T DH is the set upper limit temperature of the lithium ion battery, ΔT 2 The hysteresis temperature corresponding to the hysteresis voltage of the threshold of the set T DH detection;

When the control condition 1 gives the charging power source to the universal rechargeable battery, and the control condition 6 allows the lithium ion battery to be charged, the lithium ion battery is charged according to the control condition 2, and the lithium ion battery is not allowed to be charged when the control condition 6 is not allowed. Stop charging the Li-ion battery;

When the control condition three gives the general-purpose rechargeable battery out of the charging power supply, and the control condition 5 and the control condition 7 both allow the lithium ion battery to discharge the output, according to the control condition four, the lithium ion battery output power is stepped down and the output is stabilized, when the control is performed. When the condition 5 or the control condition 7 does not allow the lithium ion battery to discharge output, the DC-DC buck regulator discharge circuit is controlled to turn off the regulated output.
The control method of a universal type rechargeable battery comprising a lithium ion battery according to claim 9, wherein one end of the charge and discharge controller is provided with a positive electrode end cover exposed to the outer package housing, and the positive electrode contact Point as a positive electrode of a universal type rechargeable battery; one end of the negative end cap is provided with a negative contact point exposed to the outer package housing, the negative contact point serves as a negative electrode of a universal type rechargeable battery; and the lithium ion battery is selected from the outer casing A negative-packaged single-cell lithium-ion battery, a positive-electrode packaged single-cell lithium-ion battery, or a plurality of parallel-connected housings that are connected through a current collecting device, a negative-packaged single-cell lithium-ion battery, and a plurality of parallel-connected positive-electrode packaged monomer lithium ions. The battery and the plurality of parallel soft packs encapsulate the single lithium ion battery; the universal rechargeable battery is an R20 rechargeable battery or an R14 rechargeable battery; and the universal rechargeable battery is charged by a computer USB interface or a universal lithium ion battery charging adapter. The power source charges the general-purpose rechargeable battery; the first output voltage is 1.35V to 1.725V, and the second output voltage is 0.9V~ 1.35V, the maximum open circuit voltage is 1.5V to 1.725V; preferably, the first output voltage is 1.5V, the second output voltage is 1.1V, and the maximum open circuit voltage is 1.65V.
The method for controlling a universal rechargeable battery comprising a lithium ion battery according to claim 9, wherein the positive electrode end cover, the outer package housing, the negative electrode end cover, the charge and discharge controller housing, and the positive electrode bonding piece are both The metal material having high thermal conductivity and high electrical conductivity is manufactured; the forming process of the outer package shell is formed by prefabricating thin-walled pipe or by using a sheet metal drum Type, or using a sheet reel molding; the forming process of the charging and discharging controller housing is formed by prefabricating thin-walled pipe, or by sheet metal forming, or by sheet rolling; the charging and discharging controller bracket adopting a guide The light-type insulating material is manufactured for mounting a charging and discharging control circuit soldering body, and transmits an optical signal from a light-emitting diode for displaying the charging state of the general-purpose rechargeable battery to the outside of the general-purpose rechargeable battery.
The control method of a universal type rechargeable battery comprising a lithium ion battery according to claim 9, wherein the charge and discharge controller structure comprises: assembling a charge and discharge controller bracket, a charge and discharge control circuit in the charge and discharge controller housing; After welding the package body and sealing the charging and discharging controller housing, the charging and discharging controller housing pleats are welded to the copper-clad portion of the V-terminal of the lithium ion battery charging and discharging control circuit of the PCB circuit substrate; the charging and discharging Control circuit soldering body circuit structure: the components and the positive terminal cover of the lithium ion battery charge and discharge control circuit are soldered on the front side of the PCB circuit substrate, the positive electrode soldering piece is soldered on the back side of the PCB circuit substrate, and the charging and discharging controller shell is mounted The body is welded to the PCB circuit board.
The control method of a universal rechargeable battery comprising a lithium ion battery according to claim 9, wherein the lithium ion battery charge and discharge control circuit comprises: a lithium ion battery, and an integrated DC-DC step-down lithium ion battery charge control Chip, integrated lithium ion battery charge and discharge detection and control chip, integrated DC-DC buck regulator chip, first resistor, second resistor, third resistor, fourth resistor, fifth resistor, sixth resistor, seventh Resistor, eighth resistor, ninth resistor, tenth resistor, eleventh resistor, twelfth resistor, negative temperature coefficient thermistor, light emitting diode, first inductor, second inductor, first capacitor, second capacitor, a third capacitor and a fourth capacitor; wherein, the integrated DC-DC step-down lithium ion battery charging control chip, the first resistor, the second resistor, the third resistor, the first capacitor, the second capacitor, the fourth capacitor, and the first The inductor and the light-emitting diode constitute a charging control circuit for the lithium ion battery, and integrate the lithium ion battery charge and discharge detection and control chip, the fourth resistor, the fifth resistor, the sixth resistor, and the negative temperature coefficient thermistor. Lithium-ion battery detection circuit, integrated DC-DC buck regulator chip, seventh resistor, eighth resistor, ninth resistor, tenth resistor, eleventh resistor, twelfth resistor, second inductor, second capacitor The third capacitor and the fourth capacitor constitute a DC-DC step-down voltage regulator discharge circuit; the anode of the lithium ion battery is connected to the node Jb+, and the cathode of the lithium ion battery is connected to the V- terminal of the charge and discharge control circuit of the lithium ion battery; The charging power input pin of the integrated DC-DC step-down lithium ion battery charging control chip is connected to the V+ terminal of the lithium ion battery charging and discharging control circuit and the positive electrode of the fourth capacitor, and the integrated DC-DC step-down lithium ion battery charging control is integrated. The power ground pin of the chip is connected to the negative pole of the second capacitor, the negative pole of the fourth capacitor, and the V- terminal of the charge and discharge control circuit of the lithium ion battery, and the signal ground pin of the integrated DC-DC step-down lithium ion battery charge control chip is connected. The negative pole of the first capacitor, the negative pole of the fourth capacitor, and the V- terminal of the charge and discharge control circuit of the lithium ion battery, integrated DC-DC step-down lithium ion battery charging control core The thermistor access pin of the chip is connected to the signal ground pin of the DC-DC step-down lithium-ion battery charge control chip, and the charging output and detection pin of the integrated DC-DC step-down lithium-ion battery charge control chip are connected. The positive pole of the lithium ion battery and the positive pole of the second capacitor, the integrated state of the DC-DC step-down lithium ion battery charging control chip is connected to the cathode of the light emitting diode, and the integrated DC-DC step-down lithium ion battery charging control chip The charging current setting pin is connected to one end of the second resistor, and the output tracking detection pin of the integrated DC-DC step-down lithium ion battery charging control chip is connected to the anode of the first capacitor and one end of the first inductor, and the integrated DC-DC is lowered. The modulation output pin of the pressure type lithium ion battery charging control chip is connected to the other end of the first inductor, and the charging enable pin of the integrated DC-DC step-down lithium ion battery charging control chip is integrated with the lithium ion battery for charging and discharging detection and control. a charging control pin of the chip and one end of the third resistor; the lithium ion battery access pin of the integrated lithium ion battery charge and discharge detection and control chip is connected to the positive electrode of the lithium ion battery, and integrated lithium The sub-battery charge and discharge detection and control chip power supply pin is connected to the V-terminal of the lithium ion battery charge and discharge control circuit, and the integrated lithium ion battery charge and discharge detection and control chip temperature detection setting pin is connected to the node P1, integrated lithium ion battery The NTC voltage detection pin of the charge and discharge detection and control chip is connected to the voltage dividing point P2. The charging power supply of the integrated lithium ion battery charge and discharge detection and control chip is connected to the V+ end of the lithium ion battery charge and discharge control circuit, and the integrated lithium ion is integrated. Battery charge and discharge detection and control chip charging control pin is connected to the DC-DC step-down lithium-ion battery charge control chip charging enable pin, integrated lithium-ion battery charge and discharge detection and control chip discharge control pin connection integration DC-DC buck regulator chip output enable pin, integrated lithium-ion battery charge and discharge detection and control chip discharge feedback control pin connection node P3, integrated lithium-ion battery charge and discharge detection and control chip recharge energy The release pin is connected to one end of the sixth resistor; the power supply input pin of the integrated DC-DC buck regulator chip is connected to the positive pole of the lithium ion battery and the first The positive pole of the capacitor, the signal power input pin of the integrated DC-DC buck regulator chip is connected to the positive pole of the lithium ion battery and the positive pole of the second capacitor, and the power ground pin of the integrated DC-DC buck regulator chip is connected. The negative pole of the second capacitor, the negative pole of the fourth capacitor, and the V- terminal of the charge and discharge control circuit of the lithium ion battery, the signal ground pin of the integrated DC-DC buck regulator chip is connected to the negative pole of the second capacitor and the cathode of the third capacitor And the V-terminal of the charge and discharge control circuit of the lithium-ion battery, the error amplifier externally integrated with the DC-DC buck regulator chip is connected to one end of the twelfth resistor, and the oscillation of the integrated DC-DC buck regulator chip The external setting pin of the device is connected to one end of the eleventh resistor, and the feedback input pin of the integrated DC-DC buck regulator chip is connected to the voltage dividing point P4, and the output of the integrated DC-DC buck regulator chip is enabled. The foot is connected to the discharge control pin of the lithium ion battery charge and discharge detection and control chip and one end of the seventh resistor, and the modulation output pin of the integrated DC-DC buck regulator chip is connected to one end of the second inductor; The resistor is the current limiting resistor of the LED, and the first resistor is connected at one end. Ion battery charge and discharge control circuit terminal V +, the other end of the anode of the light emitting diode; a second resistor is integrated The charging current setting resistor of the DC-DC step-down lithium-ion battery charging control chip, the second resistor is connected to the charging current setting pin of the DC-DC step-down lithium ion battery charging control chip, and the other end is connected with the DC-DC. The signal ground pin of the step-down lithium ion battery charging control chip; the third resistor is a pull-up resistor of the integrated DC-DC step-down lithium ion battery charging control chip charging enable pin, and the third resistor is integrated at one end. The charging enable pin of the DC-DC step-down lithium ion battery charging control chip, and the other end is connected to the positive pole of the lithium ion battery; the fourth resistor is the upper bias voltage dividing resistor of the voltage dividing point P2, and the fourth resistor end Connected to the positive pole of the lithium ion battery, the other end is connected to the fifth resistor at the node P1; the fifth resistor is the upper bias voltage dividing resistor of the voltage dividing point P2, and the fifth resistor is connected to the fourth resistor at the node P1, and the other end is connected The negative temperature coefficient thermistor is at the voltage dividing point P2; the sixth resistor is the fourth capacitor charging residual energy discharging current limiting resistor, and the sixth resistor is connected to the integrated lithium ion battery charging and discharging detecting and controlling chip for remaining power release Pin, One end is connected to the positive pole of the fourth capacitor; the seventh resistor is a pull-up resistor of the output enable pin of the integrated DC-DC buck regulator chip, and the seventh resistor is connected to the integrated DC-DC buck regulator chip at one end. The output enable pin is connected to the positive terminal of the lithium ion battery; the eighth resistor is the upper bias voltage dividing resistor of the voltage dividing point P4, and the eighth resistor is connected to the V+ end of the lithium ion battery charge and discharge control circuit at one end, One end is connected to the ninth resistor at the voltage dividing point P4; the ninth resistor is a lower bias voltage dividing resistor of the voltage dividing point P4, the ninth resistor is connected to the eighth resistor at the voltage dividing point P4, and the other end is connected to the tenth resistor. Node P3; the tenth resistor is a lower bias voltage dividing resistor of the voltage dividing point P4, the tenth resistor is connected to the ninth resistor at the node P3, and the other end is connected to the power source of the lithium ion battery charging and discharging detecting and controlling chip. The signal ground pin of the pin and the integrated DC-DC buck regulator chip; the eleventh resistor is an oscillating frequency setting resistor of the integrated DC-DC buck regulator chip, and the eleventh resistor is connected to the integrated DC at one end -DC buck regulator chip oscillator external setting pin, the other end is connected to DC-DC drop The signal ground pin of the type voltage regulator chip; the twelfth resistor is an error amplifier compensation loop resistance of the integrated DC-DC buck regulator chip, and the twelfth resistor is connected to the integrated DC-DC buck regulator chip at one end. The error amplifier external compensation pin, the other end is connected to one end of the third capacitor; the negative temperature coefficient thermistor is a negative temperature coefficient thermistor of the lithium ion battery temperature sensing, and the negative temperature coefficient thermistor is connected to the fifth end The resistor is at the voltage dividing point P2, and the other end is connected to the power ground pin of the lithium ion battery charge and discharge detection and control chip. The body insulation portion of the negative temperature coefficient thermistor is placed on the heat conduction circuit structure connected to the output electrode of the lithium ion battery. The light-emitting diode is a charging working state display LED of the integrated DC-DC step-down lithium ion battery charging control chip, the anode of the light emitting diode is connected to the other end of the first resistor, and the cathode of the light emitting diode is integrated with DC-DC. a charging state output pin of a piezoelectric lithium ion battery charging control chip; the first inductor is an output filter of an integrated DC-DC buck lithium ion battery charging control chip Interference compensation inductance, the first inductor is connected to the output tracking detection of the integrated DC-DC step-down lithium-ion battery charge control chip The pin and the positive pole of the first capacitor are connected to the modulation output pin of the DC-DC step-down lithium ion battery charging control chip; the second inductor is the output filter of the integrated DC-DC buck regulator chip And compensating the inductor, the second inductor is connected to the modulation output pin of the integrated DC-DC buck regulator chip, and the other end is connected to the positive pole of the fourth capacitor and the V+ end of the charge and discharge control circuit of the lithium ion battery; the first capacitor To integrate the charging output filter and compensation capacitor of the DC-DC step-down lithium-ion battery charge control chip, the positive pole of the first capacitor is connected to the output tracking detection pin of the DC-DC step-down lithium-ion battery charge control chip and the first One end of the inductor, the negative pole of the first capacitor is connected to the power ground pin of the DC-DC step-down lithium ion battery charging control chip, the signal ground pin of the integrated DC-DC step-down lithium ion battery charging control chip, and lithium ion The V-terminal of the battery charge and discharge control circuit; the second capacitor is the input filter and compensation of the charging output filter capacitor of the integrated DC-DC step-down lithium ion battery charging control chip and the integrated DC-DC buck regulator chip capacitance, The positive pole of the second capacitor is connected to the charging output and detection pin of the DC-DC step-down lithium-ion battery charging control chip, the signal power input pin of the integrated DC-DC buck regulator chip, and the integrated DC-DC step-down. The power supply input pin of the type voltage regulator chip, the negative pole of the second capacitor is connected with the power ground pin of the DC-DC step-down lithium ion battery charging control chip, and the integrated DC-DC step-down lithium ion battery charging control chip Signal ground pin, signal ground pin of integrated DC-DC buck regulator chip and power ground pin of integrated DC-DC buck regulator chip; the third capacitor is integrated DC-DC buck type The error amplifier of the voltage regulator chip compensates the loop capacitance, one end of the third capacitor is connected to the other end of the twelfth resistor, and the other end is connected to the signal ground pin of the integrated DC-DC buck regulator chip; the fourth capacitor is integrated DC-DC step-down lithium-ion battery charge control chip input filter and compensation capacitor and integrated DC-DC buck regulator chip output filter and compensation capacitor, the fourth capacitor's positive terminal is integrated with DC-DC buck lithium Charging power input pin of the ion battery charging control chip The second inductor and the V+ terminal of the charge and discharge control circuit of the lithium ion battery, and the negative electrode of the fourth capacitor are connected to the power ground pin of the DC-DC step-down lithium ion battery charge control chip, and the integrated DC-DC buck regulator chip Power ground pin, signal ground pin of integrated DC-DC step-down lithium-ion battery charge control chip and signal ground pin of integrated DC-DC buck regulator chip; said integrated DC-DC step-down type The model of the lithium ion battery charging control chip is MGS2520A or MGS2520B or MGS2520C. The model of the integrated lithium ion battery charge and discharge detection and control chip is MGS1700A or MGS1700B. The model of the integrated DC-DC buck regulator chip is MGS3050. Or MGS3035.