TW516261B - Protection systems for rechargeable elements - Google Patents

Abstract

The present invention provides a protection system that prevents a rechargeable battery from being overcharged into a dangerous operating mode. The protection system may generally be used as a backup system in conjunction with a smart electronic circuit which, when functioning in its normal mode, protects the battery cells against being overcharged. Typically, this protection system should preferably integrated into the battery cells. It could also be used as part of the battery pack electronics or part of the charger. The protection system will be activated before the battery voltage reaches a dangerous threshold value. According to one embodiment of the present invention, a rechargeable battery is coupled, in parallel, to a voltage dependent resistive element, such as a zener diode or a diac, having a threshold voltage just below the threshold operating voltage of the battery. A protection element, such as a positive temperature coefficient (PTC) device, a thermal fuse, or a bimetallic breaker, etc., is coupled, in series, to the battery or to the parallel circuit of the battery and the voltage dependent resistive element. When overcharging starts to occur and the smart circuit fails to function, the current flowing in the voltage dependent resistive element will activate the protection element to thereby halt the charging operation. According to another embodiment of the invention, a rechargeable battery is coupled in series with a fuse and in parallel with a power MOSFET transistor which is preferably thermally coupled to an overcharge detection device. The overcharge detection device will drive the power MOSFET. As soon as the battery voltage exceeds a predetermined level, the power MOSFET will be activated to short the battery cells, causing the fuse to blow up, thus isolating the battery. Either a thermal fuse or a regular fuse may be used in this embodiment. If a PTC device is used instead of a fuse, it will trip and limit the fault current to a low leakage current. By connecting a protection element in series with the battery, the battery is also protected from external shorting during transportation, for example. A protection method of the present invention is also disclosed.

Description

516261 V. Description of the invention (1) The background of the present invention as a whole ^ The present invention is related to the over-current protection system: a protection system that protects rechargeable elements, such as: Recyclable ^ = We all know how to protect rechargeable batteries "U" battery packs, for example, are usually equipped with a smart battery. This smart circuit is connected in series with the battery to protect the electricity. Charging. More specifically, the smart circuit cuts off the battery. Electricity: f over: the amount of voltage exceeds the maximum voltage of 4 ″ volts per battery; also when the battery pack should be cut off at the same time, when each: two-wiring circuit charger is specially designed to let this 4 = :? The FET has a high resistance. ; So they can't drive the electricity :: 4 electricity on the dog, 3 Figure 1 and detailed description, we can see that the soil rose to 5.3 volts. Knot decline. One point these batteries are internal. However, this smart circuit is not suitable. The smart circuit cannot prevent the two 'because there are at least two conditions = when someone uses an unsuitable one'. Charged. One situation is 'the battery pack does not meet this power ~ pen Jie', such as a high voltage charger with a charger voltage greater than 24 volts. In particular, if the circuit two rises more than 5 · 3 volts due to the failure of the intelligent circuit and the ^ = type circuit and becomes a short circuit, the delta charging mode is also connected in series, this failure leads to the second: the pool May explode. should. It ’s okay to have a dangerous situation. In another case, the man also thought that the charger rose to ___. Some smart circuits were placed in the small

516261-Description of Invention (2), brush the f-board 'and attach to those battery electrodes. In this case, the :: moon dagger can damage the battery pack and cause the circuit board to be moved. Then, use the battery and a 24V or higher voltage charger. A typical charging curve (voltage across the battery vs. time) of the lithium i @ when the f1 smart circuit cannot provide the necessary protection. As shown in Figure 1, 丨% day and day τ τ τ ^ τ Example 5 Brother, this curve is divided into three areas: · Area i · U and III · V &lt; 4.5 Volt area table thousand flute y area when charged Λ — / Solid area: When the battery pack is in this area, the battery is: and :: is the operating mode under safe conditions. At · and at-: also Xi Xi i's / dish degree remained at 70. . To 60. . Down, and the pressure within: the pool group remained under 3 bar. When power is on, the battery: ^ 不 第 :: 区: When the pressure within the battery pack in this area rises from 3 bar: dangerous: mouth :. In this area, at the electrical temperature of 70 ° C ′ ❿ and in this area, the temperature of the battery group has increased by more than. V &gt; The 5.3 volt area indicates the first,, ’can explode. The pool is already too late, and Christine, two, ". In the extension phase, save electricity-in order to receive internal energy reduction and will explode. During the operation, the following three conditions Γ 二; = 嶋Operation, when charging &lt; 60 ° C, 2) pressure <3 bar, or 3) clerk / combined: 1) temperature Therefore, it is 1.5 volts for backup protection system.: When the necessary protection cannot be provided To avoid the electric operation mode. 1you I pool over charged to dangerous abstract of invention

Page 9 516261 V. Description of the invention (3) The present invention provides a new type of protection system to avoid the state of rechargeable batteries. The new style of charging to dangerous operating modes is used as a backup system, and when it is in its normal system, it usually comes with smart battery packs to avoid overcharging. In the second operation, it is better to integrate the part of the new protection system or the charger part of the 3ΓIi in those battery cells. It can also be activated as the battery pack's electronic voltage reaches 5.3 volts: the Mingbao II system will be released when the battery pack is charged. &amp; A new type of protection method in accordance with a specific example of the present invention, connected to a voltage-dependent resistance element, for example, a rechargeable battery pack is combined _ ^ 1 (such as a Schnauzer diode or Η 1 · Ρ ΓΒ combined)

The voltage (for example: 4 · 3 volts) is exactly in the -iac L (for example: lithium battery pack is 4 · 5 volts) battery, and the maximum operating voltage coefficient (PTC) device, which is 埶 ^ Guaranteed , Such as positive temperature battery%, or battery-powered, Gan H, or bimetal circuit breakers, with: 々 旦 旦 旦 路 和 和 关 电压 电压 和 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 电压 充电 充电 充电 充电 Charging starts and the smart circuit fails to operate (Electrical connection of the resistance element connected to the voltage &amp; 4) Failure to stop working. Injustice / from will start the protection element to enable charging according to another specific example of the invention, which can be rammed, connected and connected in parallel to the power M0SFET II: the body group should be the best with the electric protection After that, measure the device. ㉟The power detection device will drive the power MOSFET. Once the battery pack voltage exceeds 4.5 volts, the power MOSFET will be activated to short-circuit the battery pack, which will defame the battery and therefore isolate the battery pack. Thermal fuses or general fuses can be used for specific examples. If the PTC device replaces the fuse, it will limit

O: \ 57 \ 57689.ptd Page 10 516261 V. Description of the invention (4) Controlling the fault current into a small leakage current For example, by protecting the battery and the battery pack from short-circuits from the outside. According to a further specific example of the present invention, the battery pack can be connected to the gate and the brake fluid in parallel. The battery pack is connected to the body. The first fuse is connected to the charger and Q; the control idle current fuse is connected to the closed fluid and the over-current measurement = two, and the second voltage reaches a predetermined level, the intermediate fluid will be activated: 1 will : Once the battery pack: soil = fuse is burned out, so remove the charger from the battery pack:: When the battery pack is accidentally short-circuited before the short circuit of the battery pack before the fuse is burnt out, the delay / delay characteristic of the = is avoided蕤 * The following lasts from 2 for a very short time. With the following description and patent application, the main goals, achievements and envy of the present invention, and 5 drawings, other objectives will not be clear. A fuller understanding will become apparent. The summary description of the chart, the reference symbols in the chart are the same as the parts referred to. Fig. 1 shows a charging curve of a lithium battery pack, and Figs. 2A-2C, 3, 4 and 5 show specific examples of protection systems according to the present invention. ^ Detailed description of specific examples The present invention provides a protection system that protects a rechargeable battery pack from being overcharged to a dangerous operation mode during charging. The protection system can be used as a backup system and often incorporates smart plastic power circuits that monitor the charge of the battery pack. Smart power circuits can be commercialized, eg in California

Page 11 516261 V. Description of the invention (5)

Sr: y / ajl Maxim's MAX745 or MAX846A products. In general,: Christine :: It can only be integrated with the battery pack itself, or it can be used by the electronics department or the charger. Also, the following specific examples of the present invention are discussed, and the chain electricity reward is specifically described: electricity situation opening>. It will be understood by those familiar with the prior art and will be used in: It is possible, lifting things, the present invention can also be applied to other types of rechargeable batteries. Because the invention also includes that Figs. 2A-2C show specific examples of the basic circuit according to the invention. Rechargeable battery pack 10 in operation, for example: a lithium battery pack with "Volts such as: 41 1", connected in parallel to a voltage-related resistance element, example 4 · 1 voltaine diode 2 0 In order to report # ,, detach &amp; series one baojin yuan # 9R / Cheng Ya ^ 黾 road. Parallel circuit metal :: 』;: Λ: ΡΤ" set, thermal fuse or two 26 best β °. ，，， 〇 I protection of the activation of the protection element, the protection element is connected to a wide range ... Coupled to the diode 20. The charger 30 and the smart circuit 31 of the charger 30 are connected in series with the battery and the sub-unit combination. Charger 30 is also °: [δ body 20's, limbs, for example, because the protection element 26 is connected in series to the thunder, also set! Η α &amp; Parallel circuit of the diode 20, all two, and 10 Zona

2 6 i? M. 5 Ai 1 early packet flow is focused on protecting Yuandu I, so the protection element will be activated relatively quickly. Figures and 2C show variations of the specific example of Figure 2A. The above specific examples of the power consumption 彳 p are λ, because the work in the diode ☆ is between…, so the power consumption energy / policy suppresses the heating factor. Miscellaneous protection element and audit diode =

Page 12 516261 V. Description of the invention (6) In the case of using a constant-current DC charging circuit with improved current in a coupled coupling field (low internal resistance makes the current 焱 疋), due to its operation, -top :: top: start 4 charge 3 volts If the smart circuit has no f = 20 to maintain 43 electricity, one or two currents enter product 7, and the differential ft electric current of the diode becomes smaller to maintain the electric hunting connection. It changes with multiple currents ^. The battery is fixed at 4 · 3 volts. The zener diode has a 耵 U 疋 voltage. In this case, the diode is heated and the diode is heated. Overcharging ...: The political heat makes Bao W suppress more quickly, so avoid the overcharged Sister Lei, "... people are small. Again

Fig. 2 A When the electricity is fixed into the dangerous operating mode 2C 2. Photo-combiner palpitations ::; Examples in the use of light-combiner 'Γ For example, as shown in. Two light-emitting diodes in series and rated at 3 volts are: [Formula: Pool ⑯10 Parallel: Sub-connected circuit. The protection element 26, Example 2 and LED 50 form the H-th circuit breaker 'series connected to the first ❿ device or: the protection element 26 and the first "circuit. Phototransistor: sub-connection circuit. Charger 3. : The combination of circuits forms the first parallel circuit to the second parallel circuit, the circuit and the intelligent circuit are not.) Also connected to the power supply (not shown in the specific example of Figure 3 in accordance with the above &amp; ____ operation, under normal conditions, the Page 13 516261 V. Description of the invention (7) The current in the Zener diode 20 is not enough to make the LED 56 emit light. However, if a fault occurs, for example: using a high voltage charger, the Zener diode 20 miles The current will increase, so the photocoupler 50 of the shunt battery pack 10 is activated in turn. This causes the protection element 26 to start to cut off the battery pack 10. Fig. 4 shows another specific example of the present invention. Here, For a specific example, a rechargeable battery pack 10 is connected in parallel with an over-capacity detection device 60, such as: an over-voltage detection device, model .TV54VN, (eg, package SOT 23B-3 or SOT89-3), Telcom Semiconductor Manufacturing Company ·,

Crawley, West Sykes, UK. The battery pack 10 and the detection device 60 are connected in parallel with the protection element 58, and the protection element 58 may be a Θ fuse, a thermal fuse or a PTC device. The combination of the battery pack 10, the detection device 60 and the protection element 58 is connected in parallel to the power M0SFET transistor 80, Palestine · Motorola MTD 3 0 5 5EL, Xibu shell 3 6 9A-10.智 '-shunt circuit 31 is connected in parallel with the charger 30 to the battery pack 10 in parallel. Charger 30 is also connected to a power source (not shown). The MOSFET 80 is biased by a resistor 76 and is driven by a device 60 of a transistor 74. The detection device 60 includes a constant current source 62, which supplies a current of _4.5 voltaron diode 64. When the battery pack voltage reaches 4.5 volts, the comparator 72 outputs a positive voltage to turn off the transistor 74, and then turns on MOSFET 80. This causes the battery pack 10 to be shunted. Therefore, the protection element 58 has a south current. If a fuse (such as the British company Farnell's AVX-Kyocera) is used as the protection element 58, it will burn out and cut the battery pack 10 to prevent the battery pack from exploding. If the PTC device is used as a protective element 58 instead of a fuse, the PTC will fail and

Page 14 516261 V. Description of the invention (8) Reduction of large electric current Low leakage current in normal bars, so as to avoid battery pack explosion. When the battery pack is two, when the circuit 31 is operating properly, the comparator 72 is coated with a voltage lower than the audit diode 64. Therefore, the negative voltage is greater than 8 μL, and the crystal 74 is turned on, causing the power MOSFET 80 to be turned off. Complex bribe one in Figure 4

The largest electric Y-hearted constant current charger can be used safely. Assuming the capacity, for example, the current of 5Γ turtle pool 1 〇 is 2 C, C is the battery battery pack 1 〇 儿 the charge current exceeds 2C ordered by the manufacturer, the fuse will be burned and will be internal, but st st electrical appliances 3〇 Cut off. However, if the charge current is faulted at 2C ::: The voltage is higher than 4.5 volts, the detection device 60 will issue a 1-way battery pack 10, causing the fuse to blow. Application: as in the example, the fixed voltage charger can also safely make the current flow, the voltage of the fuse is too south and a charge higher than 2c is induced. The battery will be burned to prevent the battery pack from exploding. Another ancient warrior ’s current is less than 9Γ. Θ ^ ^ ^ However, if the voltage of charging &amp; i is greater than 4.5 volts due to charging, it will be divided into: electricity is too high. What should be measured U 60 Replace the PJC device with a fuse. The PTC device will fail. If the meat is used, the battery will be protected. 热 4: Two specific examples, if the protection element, 58 之 门 # 用 1

Can be relatively simple. This is because the power MOSFET devices have common contacts. Therefore, — ,, ^ 80 and the protection element are used to make thermal fuses: "° Since the traces can be used when the comparison is easy, let the MOSFET 80 t Jyou from Sichuan and the traces form heat.

Page 15 516261 V. Coupling of Invention Description (9). Set the i-body example of ‘all the components (protective components, over-capacitor resistors and power MOSFETs) are the best surface adhesion elements. Figure 5 and Table 2 are the specific examples of V month 1 into 7. The specific example is a two-cell recharge private battery pack 10, such as a lithium-ion battery plant, a θ disk private I detection device 90 connected in parallel, such as an excess battery /,, / /, TC54VC, detected in the West Sussex UK The test device, Model Number Semiconductor, is commercially available. Detector device 62, audit diode 64, resistor dysfunction ^ Wu 7000 and 68, Yungukou 72, p-type field effect transistor (FET) Ql r battery pack 10 #detection device 9. Parallel circuit port: "一 ET Q2. The pieces 94 are coupled in series, and the rotation of the detection device 90 is protected by a protective gate fluid (SCR) 96. The second protection element &amp; is controlled by the resistor ^ 1-the element '94, the brake fluid 96, the debt measuring device 9 = brother: protection element: road. Charger 3. It will be connected to all electric V :: parallel wires and connected to a power source (not shown). In the specific example, this ^ also 94 and 98 are companion 4 (two protection elements) with delay characteristics

C1 ηι μ Male, prone to health insurance, such as SMD 1 2 = fuse 2A, ⑴lnos, Des ... coffee Uttlefuse has commercialized this. When it burns π ”flow, it usually has about 1 delay. :::,!; When the flow disappears during this period, the fuse will not fail two 22 kΩ SMD resistors. Can be

1220-600 β, France, st Genis pn · 疋 ST benis p0Ullly, st microelectronics 516261 V. Description of Invention (ίο) The company commercialized this. Under normal conditions, the charger 30 is connected to the board and supplies 2 amps of current through the adjusted battery pack 10 guaranteeing a voltage of 4V. The detected voltage Vd is compared with the reference, two, pieces 94 and 98. The operational amplifier 72 is used as a comparator to compare with the envelop voltage Vref. The measured voltage Vd is lower than the reference voltage Vre f. In this case, a positive voltage is detected, which turns transistor Q2 on, 钬. Therefore, the output of the comparator 72 is closed. Because there is no current flowing through the resistor R i, Tunri Solar Q1 remains off. Therefore, normal charging operation is performed. The brake fluid 96 is not used in that case, the wrong charger is used. Voltage charger (eg: a 12 v ☆ + 夂 疋 with a high rating ν f々μ; lu Α ζ ν charger), at Vd Shao Vortex

Vref is drawn, and the battery pack voltage Vbat will be in the R state. Comparator 7 2 outputs a negative voltage, which leads to two Γ. Among them, μ is called μ. The dagger V energizes the crystal Q1, and the crystal is turned off. This caused the current to flow through the resistor, ri crying. As a result, the ancient emperor! = 96 is activated and short-circuits the battery pack and charges

Mouth moon slaves were guided from the battery pack and the charger, and the girl closed the QRC to the ground 0 A two ,, free, 丄 1_, `` 工 「甲] &quot; 丨 L9B J asked about the protection element caused by the private flow 94 And g8 Huan in ^ ^ ί cut off in the package pool group. When the logic element of the protection element is reduced w &amp; the battery pack is accidentally short-circuited, the σ ^ late characteristic avoids τ / and has a very short period of time. Like the present invention Another specific implementation is to use the main protection system, which can Θ:,: the circuit in the spiritual example can be used to build a smart circuit. Tian Benwuming, together with a few specific examples, is already true, right For those familiar with the previous art, further ^ :: explicit applications and changes will be described below: "The purpose of the invention described in the text, c, τ

Claims (1)

516261 Case No. 88106025 Amazing Year cP Month Amendment VI. Patent Application Scope 1. A protection system used in combination with a rechargeable element with a maximum operating voltage, the system includes: a voltage adjustment device to provide voltage adjustment And for parallel coupling to the recharging device to form a parallel circuit, the voltage adjusting device has a threshold voltage that is not greater than the maximum operating voltage of the rechargeable element; and a protection device connected in series with the parallel circuit Coupling to provide over-charge protection for the rechargeable element; wherein when the current of the voltage adjusting device reaches a predetermined level that will cause the rechargeable element to overcharge during a charging operation, the protection The device is activated to limit the current of the rechargeable element. φ 2. The system according to item 1 of the scope of patent application, wherein the protection device is thermally coupled to the voltage adjustment device. 3. If the system of item 1 of the patent application scope further includes a second. The protection device is coupled in series with the rechargeable element. A 4. A protection system for use in combination with a rechargeable _ _ rechargeable element having first and second terminals and a maximum operating voltage, the system comprising: a voltage-dependent resistive element having a first terminal coupled to the rechargeable A first terminal and a second terminal of the rechargeable element are coupled to a second terminal of the rechargeable element, the voltage-related resistance element has a threshold voltage not greater than a maximum operating voltage of the rechargeable element; and A protection element having a first terminal coupled to a terminal of the voltage-related resistance element @ and a second terminal coupled to a terminal of a smart circuit; when the current of the voltage-related resistance element reaches one, it will cause charging operation O: \ 57 \ 57689.ptc Page 1 2001.08. 24. 020 516261 _Case No. 88106025 Amendment on February 2nd of the year __ VI. When the predetermined level of overcharging of rechargeable components occurs during the scope of patent application The protection element is activated to limit the current of the rechargeable element. 5. The system according to item 4 of the patent application, wherein the protection element is thermally coupled to the voltage-related resistance element. 6. The system of claim 5 in which the protection element includes a positive temperature coefficient (PTC) device, a thermal fuse, or a bi-metal circuit breaker. 7. If the system of item 4 of the patent application: wherein the rechargeable element includes a lithium battery pack, and the maximum operating voltage is 4.5 volts; and the voltage-related resistance element includes an audit diode, and the The limiting voltage is φ 4 · 3 volts. 8. A rechargeable power system including: a rechargeable element having first and second terminals and a maximum operating voltage; and ... a protection system integrated with the rechargeable element And includes: / a voltage-dependent resistor, a component having a first terminal coupled to a first terminal of the rechargeable component, and a second terminal coupled to a second terminal of the rechargeable component, The voltage-related resistance element has a threshold voltage not greater than the maximum operating voltage of the rechargeable element; and a protection element having a first terminal coupled to one of the terminals of the voltage-related resistance element, and a second Terminals connected to one terminal of the smart circuit; when the current flowing through the voltage-related resistance element reaches a predetermined level, the O: \ 57 \ 57689.ptc Page 2 2001.08. 24. 021 516261 Case No. 88106025 and year (P month is amended 6. The predetermined level of patent application scope will cause the rechargeable component to occur during the charging operation Overcharge, and the protection element will be activated to limit the current in the rechargeable element. 9. The system of item 8 of the patent application, wherein the protection element is thermally coupled to the voltage-related resistance element. 1 0. The system of item 9 in the scope of patent application, wherein the protection element includes a positive temperature coefficient (PTC) device, a thermal fuse or a bimetal circuit breaker. 1 1 · The system of item 8 in the scope of patent application: The rechargeable element includes a lithium battery pack, and the maximum operating voltage is 4.5 volts; and the voltage-dependent resistance element includes an audit diode, and the threshold voltage is 4.3 volts. The system of item 8, further comprising a second protection element coupled in series with the rechargeable element, the second protection and protection element having a terminal connected to the voltage of the resistance element 13. A protection system for a rechargeable element having a maximum operating voltage, comprising: a protection device for providing over-current protection of the rechargeable element and for connecting with the rechargeable element. Rechargeable elements are coupled in series to form a series circuit; and a voltage adjustment device for providing voltage adjustment and coupling in parallel with the series circuit. The voltage adjustment device has a threshold voltage and is no greater than 516261 Amendment_Case No. 88106025 6. Maximum operating voltage of patentable range of patentable components; When the current flowing through the voltage adjustment device reaches a predetermined level, the predetermined level will cause the rechargeable battery to be recharged during the charging operation The over-charged components are overcharged, and the protection device will be activated to limit the current in the rechargeable components. 14. The system according to item 13 of the scope of patent application, wherein the protection device is thermally coupled to the voltage adjustment device. 15. A protection system for a rechargeable element having a maximum operating voltage, the system comprising: a protection element for coupling in series with the rechargeable element to form a series circuit; and a voltage-dependent resistor An element for coupling in parallel with the series circuit, the voltage-related resistance element having a first terminal coupled to one terminal of the protection element, and a second terminal coupled to one terminal of the rechargeable element, the voltage The associated resistance element has a threshold voltage and is not greater than the maximum operating voltage of the rechargeable element. When the current flowing through the voltage-related resistance element reaches a predetermined level, the predetermined level will cause the charging operation period, The rechargeable element is overcharged, and the protection element is activated to limit the current in the rechargeable element. 16. The system according to item 15 of the patent application scope, wherein the protection element is thermally coupled to the voltage-related resistance element. 17. The system according to item 16 of the patent application scope, wherein the protection element includes a positive temperature coefficient (PTC) device, a thermal fuse or a pair of gold O: \ 57 \ 57689.ptc Page 4 2001.08. 24. 023 516261 Amendment No. 88106025 Six 'patent application scope belongs to the circuit breaker. 1 8. — A protection system for a rechargeable component, including: a detection device to detect an overcharge condition of the rechargeable component; a shunt device, which responds to the detection device when overcharged When the situation occurs, it is used to shunt the rechargeable element; and the protection device, in response to the shunt device, is used to limit the current of the rechargeable element when the shunt device shunts the rechargeable element. . 19. The protection system according to item 18 of the scope of patent application, wherein the detection device includes a photocoupler transmission element and a voltage-related resistance element, which has a threshold not greater than the maximum operating voltage of the rechargeable element Voltage; 4 wherein the shunt device includes a receiving element of the photocoupler; and wherein when the voltage-related resistance element current reaches a predetermined level, the predetermined level will cause the rechargeable element to overcharge during charging operation Electricity, and the transmitting element is activated and causes the receiving element to shunt the rechargeable element, which in turn activates the protection device to limit the rechargeable element; the current. 20. The protection system according to item 19 of the patent application scope, wherein the protection device includes a fuse, and the voltage-related resistance element includes an audit diode. 2 1. The protection system according to item 19 of the scope of patent application, wherein the protection device includes a positive temperature coefficient (PTC) device, and the voltage-related resistance element &lt; includes an audit diode. 2 2. If the protection system of item 18 of the scope of patent application; O: \ 57 \ 57689.ptc Page 5 2001.08. 24. 024 516261 __ Case No. 88106025_% amended on the 2nd of the month _ ~ ~ 1/6, the scope of patent application where the detection device includes an excessive voltage detection device For detecting an excessive voltage condition; wherein the shunt device includes a power MOSFET transistor activated by the excessive voltage detection device; wherein when the excessive voltage detection device detects a rechargeable type during charging operation When the voltage of the component reaches a predetermined level, the excess voltage detection device activates the power MOSFET transistor to shunt the rechargeable component, thereby activating the protection device to limit the current of the rechargeable component. 2 3. A type of rechargeable power system, including: a rechargeable element; a protection system that integrates the rechargeable element, the protection system includes a Φ detection device to detect the rechargeable type The component is overcharged; the shunt device is responsive to the detection device and used to shunt the rechargeable component when the overcharge situation occurs; and the 'protection device is responsive to the shunt device when the When the shunt device shunts the rechargeable / rechargeable element, it is used to limit the current flowing through the rechargeable element. 24. A method for protecting a rechargeable element having a maximum operating voltage, the method comprising the steps of: coupling a voltage-related resistance element in parallel with the rechargeable element to form a parallel circuit, The voltage-related resistance element has a threshold voltage that is not greater than the maximum operating voltage of the rechargeable element; and a protection element is connected in series to the parallel circuit; when the current flowing through the voltage-related resistance element reaches one, it will cause In charge O: \ 57 \ 57689.ptc Page 6 2001.08.24. 025 516261 _ Case No. 88106025_% year, month amendment _ VI. Patent application scope During the electrical operation, the rechargeable component is overcharged at a predetermined level The protection element is activated to limit the current flowing in the rechargeable element. 25. The method of claim 24, further comprising the step of thermally coupling the protection element to the voltage-related resistance element. 2 6. — A method for protecting a rechargeable element having a maximum operating voltage, the method comprising the steps of: • coupling a detecting device in parallel with the rechargeable element to form a parallel circuit, the detecting device Detecting whether an overcharge situation has occurred in the rechargeable element; coupling the protection device in series with the parallel circuit to form a series circuit; and coupling a shunt device in parallel with the series circuit. When an overcharge occurs, the shunt device The rechargeable device is shunted; wherein when the shunt device shunts the rechargeable element, the protection device limits the current flowing through the rechargeable element. 2 7. The protection system according to item 18 of the scope of patent application, wherein: the detection device includes an over-voltage detection device for detecting an over-voltage condition; the shunt device includes a gate fluid, which can be The over-voltage detection device is activated; the protection device includes a fuse connected between a charger and the rechargeable component; when the over-voltage detection device detects the power of the rechargeable component O: \ 57 \ 57689.ptc Page 7 2001.08. 24. 026 516261 _ Case No. 88106025 Amendment Month and Day _ VI. When the scope of patent application reaches the predetermined level during the charging operation, the excessive voltage detection device The brake fluid is activated to shunt the rechargeable element, thereby blowing out the fuse and cutting off the charger from the rechargeable element. 2 8. The protection system according to item 27 of the patent application scope, wherein the protection device further comprises a second fuse connected between the brake fluid and the rechargeable element. 29. The protection system according to item 28 of the patent application, wherein each fuse has a predetermined delay when the rechargeable element is shunted before it is burnt out. O: \ 57 \ 57689.ptc Page 8 2001.08.24. 027