CN2612082Y - Rechargeable battery pack - Google Patents
Rechargeable battery pack Download PDFInfo
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- CN2612082Y CN2612082Y CN 03243158 CN03243158U CN2612082Y CN 2612082 Y CN2612082 Y CN 2612082Y CN 03243158 CN03243158 CN 03243158 CN 03243158 U CN03243158 U CN 03243158U CN 2612082 Y CN2612082 Y CN 2612082Y
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- battery pack
- control
- rechargeable battery
- circuit
- rechargeable
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A combined rechargeable battery is composed of parallel at least one battery groups, wherein the battery group at least comprises two rechargeable battery units with controllable connection, while the rechargeable battery units are serially connected. The combined rechargeable battery of the utility model can check and control any rechargeable battery, and when any rechargeable battery is accident, a relative control circuit can insulate and bypass the accident rechargeable battery to directly connect other rechargeable batteries connected with the accident rechargeable battery, to confirm the normal operation of the battery group.
Description
Technical field
The utility model relates to a kind of assembled battery, and particularly a kind of being coupled to each other by some chargeable electric cores formed, and operating state, connecting mode are controlled Rechargeable battery pack.Belong to battery manufacturing technology field.
Background technology
At present, the employed Rechargeable battery pack of people all is made up of according to specific connecting mode some chargeable electric cores.
Generally, according to using needs, chargeable electric core at first is connected into battery pack, and then the battery pack that several are same carries out parallel connection, just can make to have certain output voltage and the rechargeable battery of capacitance (for example cells in notebook computer).
Because the quality and the performance of each chargeable electric core exist difference in the assembled battery, when certain battery unit breaks down, as short circuit, open circuit, overcharge or the overdischarge phenomenon, will directly influence the regular picture or the charging of the battery pack at its place, and then have influence on the serviceability of whole assembled battery.When this thing happens, the way that adopts was changed whole assembled battery exactly usually, and the chargeable electric core that does not break down as yet also is replaced simultaneously, and this has just caused bigger waste.Because the price comparison height of Rechargeable battery pack, particularly the price of special combination rechargeable battery (as battery of notebook computer) is higher, so the expense of changing battery is higher relatively, the waste situation will be more serious.
In addition, normally used Rechargeable battery pack is when powering to power consumption equipment, and the voltage according to battery that power consumption equipment can only be passive is judged its remaining electric weight, and can't carry out the control of operating state to employed Rechargeable battery pack.When adopting several similar batteries to form the set battery pack to this power devices, this equipment can't detect respectively the working condition of each assembled battery, control, and therefore also can't judge the assembled battery that breaks down.For example, for lengthening working hours, when adopting two Rechargeable battery pack parallel connections to be a notebook power supply, when if the overdischarge phenomenon appears in one of them assembled battery, this notebook can not be judged the concrete battery that breaks down, and the assembled battery that does not break down as yet will promptly charge to fail battery to this notebook power supply simultaneously, therefore, seriously influenced the not service efficiency of fail battery, and made the too early release of the storage electric weight of fail battery not totally.
The utility model content
Main purpose of the present utility model is the phenomenon that breaks down and cause whole assembled battery to scrap because of indivedual chargeable electric cores in the combinations thereof rechargeable battery, a kind of Rechargeable battery pack is provided, this Rechargeable battery pack can detect separately and control the behaviour in service of the chargeable electric core of forming himself, makes single failure electricity core can not have influence on whole Rechargeable battery pack.
Secondary objective of the present utility model is can't control assembled battery at above-mentioned power consumption equipment, especially can't judge the Rechargeable battery pack in the supplying cell group, the deficiency of selected control, a kind of Rechargeable battery pack is provided, this battery can carry out both-way communication with external equipment, and can accept the control of external equipment to its enforcement.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Rechargeable battery pack, this Rechargeable battery pack are to be composed in parallel by a group or more battery pack; Described battery pack comprises two rechargeable cell that connection status is controlled at least; Described rechargeable cell is connected mutually.
The positive pole of battery pack is connected with the common port of a charge/discharge selector switch; The charging end of described charge/discharge selector switch directly or by unidirectional breakover element is connected with charge power supply indirectly, and its conducting direction is the charging current direction; The discharge end of described charge/discharge selector switch directly or by another unidirectional breakover element is connected with the output of described Rechargeable battery pack indirectly, and the conducting direction of another unidirectional breakover element is the discharging current direction.
Rechargeable cell is connected by selector switch; Described selector switch has selecting side, No. 1 selected end, No. 2 selected ends; Described selecting side is connected with the negative pole of rechargeable cell; Described No. 1 selected end is connected with the positive pole of adjacent next rechargeable cell; Described No. 2 selected ends are connected with the negative pole of described battery pack; In described battery pack, except that first rechargeable cell that is positioned at this battery anode end, the positive pole of all the other rechargeable cell also is connected with the charge power supply end by unidirectional breakover element; The conducting direction of described unidirectional breakover element is the charging current direction.
Also be provided with state control circuit, normal data communication interface in the described Rechargeable battery pack; The signal end of described state control circuit is connected with positive pole, the normal data communication interface of described rechargeable cell respectively; The control end of described state control circuit is connected with the control end of described charge/discharge selector switch, the control end of selector switch respectively.
State control circuit can be a single-chip microcomputer.
The normal data communication interface can adopt USB communication interface or RS232 interface or RS485 interface.
Above-mentioned rechargeable cell is to be made of chargeable electric core, first control switch and second control switch at least; Described chargeable electric core is with in parallel with second control switch again after first control switch is connected; Described first control switch, second control switch have only a switch connection at work simultaneously.
Also comprise telemetry circuit in the above-mentioned rechargeable cell, the input end of this telemetry circuit is connected with the output of described chargeable electric core; The discharge control end of described telemetry circuit is connected with the control end of described first control switch; The charging control end of described telemetry circuit is connected with the control end of described first control switch.
Described first control switch is controllable switch element or gate-controlled switch circuit; Described controllable switch element is switching transistor or relay; The control end of described switching transistor or relay is connected with the discharge control end or the charging control end of described telemetry circuit; Described gate-controlled switch circuit is to be composed in series by two switching transistors that are parallel with unidirectional breakover element at least, or be composed in series by two relays that are parallel with unidirectional breakover element, this circuit has two control ends at least and is connected with discharge control end, the charging control end of described telemetry circuit respectively.
The control end of described first control switch also is electrically connected with the control end of external control circuit; The output of chargeable electric core also is connected with the signal end of external control circuit.
Described second control switch is switching transistor or relay; The control end of described switching transistor or relay is connected with the control end of external control circuit.
Chargeable electric core can adopt lithium-ion electric core or ni-mh electricity core or NI-G electricity core.
In technique scheme, also further be provided with constant voltage circuit in the described Rechargeable battery pack, and the output of former Rechargeable battery pack is transferred to the voltage input end of described constant voltage circuit, and the output of described constant voltage circuit is set at the new output of described Rechargeable battery pack.
Described constant voltage circuit comprises input control module and power output unit at least; A signal input part of described input control module is connected with the input of described constant voltage circuit, and the new output of another signal input part and described Rechargeable battery pack is electrically connected; The control signal end of described input control module is connected with the control end of described power output unit; The output of described power output unit is connected with the new output of described Rechargeable battery pack.
Another signal input part of described input control module is connected with the control end of described state control circuit.
As shown from the above technical solution, Rechargeable battery pack provided by the utility model not only can detect control to any chargeable electric core of forming himself, but also the work state information of himself can be transmitted to external equipment by control circuit and communication interface, and can accept the control of external equipment.
When any chargeable electric core breaks down, in the telemetry circuit of mapping just it can be isolated immediately, simultaneously with this fault electricity core bypass, other the chargeable electric core that is attached thereto is directly connected, thereby guaranteed the operate as normal of battery pack that should electricity core place, so make whole Rechargeable battery pack charge normal or discharge work unaffected.
This Rechargeable battery pack is connected by selector switch and rechargeable cell, and under the control of state control circuit, can change inner connecting way flexibly, the new function of discharged in series, charged in parallel is provided, each chargeable electric core can both be worked under comparatively desirable charge/discharge environment, equipment is when using power supply adaptor and rechargeable battery powered operation simultaneously, and the unlikely fluctuation of input voltage is too big.Because power supply adaptor will charge to rechargeable battery, its output voltage should be greater than the maximum output voltage of rechargeable battery, and along with the discharge of rechargeable battery, its output voltage just constantly descends, and adopts the mode of discharged in series, charged in parallel just can effectively improve the fluctuation of output voltage.
Effectively prolonged the useful life of Rechargeable battery pack.
In addition, owing to be provided with constant voltage circuit in the utility model, make this Rechargeable battery pack can not make the too high delivery efficiency that influences electric current of output voltage because of too much chargeable electric core.
Description of drawings
Fig. 1 is the circuit diagram of a related rechargeable cell embodiment of the utility model;
Fig. 2 is the theory of constitution figure of a specific embodiment of the utility model;
Fig. 3 is the composition frame chart of another specific embodiment of the utility model;
Fig. 4 is the embodiment theory of constitution block diagram that is provided with constant voltage circuit;
Fig. 5 is a specific embodiment circuit diagram of constant voltage circuit among Fig. 4.
Embodiment
Below, in conjunction with specific embodiments and with reference to accompanying drawing the utility model is further described in detail.
Figure 1 shows that the circuit diagram of the rechargeable cell that the utility model is related.Mainly comprise in the described rechargeable cell: chargeable electric core B, first control switch that constitutes jointly by metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, diode D5, diode D6 and second control switch that constitutes by metal-oxide-semiconductor Q3 with two-way admittance control.Chargeable electric core B is with in parallel with second control switch again after first control switch is connected.When two metal-oxide-semiconductors in first control switch all were in off-state, the metal-oxide-semiconductor Q3 of second control switch was in on-state, otherwise when any one was in conducting state among metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 was in off-state.
In above-mentioned rechargeable cell, also be provided with observing and controlling chip IC 1.The input end 5 of observing and controlling chip IC 1 is connected with the output of chargeable electric core B.The discharge control end 1 of observing and controlling chip IC 1 is connected with the control end of metal-oxide-semiconductor Q1; The charging control end 3 of observing and controlling chip IC 1 is connected with the control end of metal-oxide-semiconductor Q2.
Observing and controlling chip IC 1 makes discharge control end 1 or charging control end 3 be output as high level according to the voltage signal of input end 5 inputs, in order to control conducting or the shutoff under discharge or charged state of this chargeable electric core B.
When chargeable electric core B breaks down (as overcharging or overdischarge), the control end of two metal-oxide-semiconductors of first control switch all is in low level, and first control switch is disconnected.In concrete the application, because chargeable electric core B normal conditions are to be connected in the battery pack, when first control switch disconnects, the metal-oxide-semiconductor Q3 of second control switch is externally under the control of control device, be in on-state, all the other rechargeable battery pack that are connected this rechargeable cell upper/lower terminal are directly connected, thereby guarantee the operate as normal of this battery pack.
In foregoing circuit, the positive pole of chargeable electric core B also is connected with the signal end Port of external equipment, voltage signal output with this chargeable electric core B, simultaneously, the control end of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 also is connected with external control signal end k1, k2 respectively, in order to accept the direct control of external control device.
It below is the specific embodiment that adopts the Rechargeable battery pack of above-mentioned rechargeable cell composition.
Embodiment one
As shown in Figure 2, this Rechargeable battery pack is to be connected into battery pack earlier by two rechargeable cell Bu, and two same battery pack are composed in parallel again.
Described rechargeable cell Bu1, Bu2 are by selector switch K1 series connection, and this selector switch Ku has selecting side x, No. 1 selected end, No. 2 selected ends, and selecting side x is connected with the negative pole of rechargeable cell Bu; Described No. 1 selected end is connected with the positive pole of adjacent next rechargeable cell Bu2; Described No. 2 selected ends are connected with the negative pole of described battery pack.In this battery pack, except that first rechargeable cell Bu1 that is positioned at positive terminal, the positive pole of rechargeable cell Bu2 also is connected with charge power supply end Vcc by diode D2; The conducting direction of diode D2 is the charging current direction.
The positive pole of this battery pack is connected with the common port y of a charge/discharge selector switch K; The charging end c of described charge/discharge selector switch is connected with charge power supply Vcc by diode D1, and its conducting direction is the charging current direction; The discharge end f of described charge/discharge selector switch K is connected with the output DC of described Rechargeable battery pack by another diode Df, and the conducting direction of another diode Df is the discharging current direction.
In above-mentioned connection, when the common port y of charge/discharge selector switch K is communicated with discharge end f, and the selecting side x of selector switch K1 is when being communicated with No. 1 selected end, and rechargeable cell Bu1, Bu2 form the discharged in series group; When the common port y of charge/discharge selector switch K is communicated with charging end c, and when the selecting side x of selector switch K1 is communicated with No. 2 selected ends, rechargeable cell Bu1, Bu2 form the charged in parallel group, make each rechargeable cell can obtain abundant charge capacity.
Because all having, rechargeable cell can supply the signal end of external control device control, so, when charged in parallel, when any one chargeable electric core is finished charging work, though but the first control switch automatic disconnection, the second not conducting of control switch.
In addition, the control end of above-mentioned charge/discharge selector switch K, selector switch Ku all is subjected to the unified control of external control device.
Embodiment two
As shown in Figure 3, in this embodiment, be provided with single-chip microcomputer, USB communication interface in the Rechargeable battery pack.The batteries in parallel connection group that battery pack is wherein provided for the foregoing description one, the signal end of single-chip microcomputer is connected with the positive pole of each rechargeable cell in the battery pack respectively, also is connected with the USB communication interface simultaneously.
The control end of single-chip microcomputer is connected with the control end of described charge/discharge selector switch, the control end of selector switch respectively, also can be connected with the control end of second control switch of each rechargeable cell the while.
Control by single-chip microcomputer, can realize each battery pack of formation Rechargeable battery pack and the control of each rechargeable cell, moreover, by the USB communication interface, this Rechargeable battery pack can also carry out communication with outer computer and be connected, and accepts the control signal of outer computer.
Embodiment three
Also can further be provided with constant voltage circuit in described Rechargeable battery pack, make this Rechargeable battery pack have stable constant voltage output, make to have higher delivery efficiency, its implementation as shown in Figure 4.
The output of Rechargeable battery pack is transferred to the voltage input end of described constant voltage circuit, and the output of described constant voltage circuit is set at the new output DC of this Rechargeable battery pack.The output voltage of the assembled battery of being made up of battery pack 1, battery pack 2 is limited in the specified voltage range by the detection control of constant voltage circuit.
The operation principle of above-mentioned constant voltage circuit is seen shown in Figure 5.This circuit adopts pulse width modulating chip IC for detecting control module, and battery pack is connected with the Vcc end of this circuit, and voltage signal is imported 15 pin.The pulse signal output end 11,14 of pulse width modulating chip IC is connected with the signal input end of power output unit in this circuit respectively.The base stage of transistor Q1, Q2 is connected with pulse signal output end 11,14 respectively, when pulse width modulating chip IC exports two reverse impulse signals by pulse signal output end 11,14, transistor Q1, Q2 enter conducting state respectively, and produce two reverse electric currents, described two reverse electric currents produce two reverse voltages by mutual inductor B1 between the two ends of the inferior utmost point and centre tap, and synthesize the forward output voltage by the effect of swinging to of diode D1, D2.
The ON time of pulse signal output end 11,14 is subjected to the control of pulse width modulating chip IC, and different ON time can obtain the pulse of different in width, thereby will obtain different effective output voltage values at the output of mutual inductor B1.Parameter by preestablishing each element in this circuit and to the detection of the actual output voltage signal of battery pack can obtain the ON time of pulse signal output end 11,14.
When the battery pack output voltage signal is high, the ON time of pulse signal output end 11,14 is shorter, then, it is short that the ON time of transistor Q1, Q2 should be mutually, the inferior utmost point at mutual inductor B1 obtains the narrower current waveform of pulsewidth, and its output voltage numerical value is then less than the actual output voltage signal numerical value of battery pack; When the voltage of battery pack lower, its voltage signal is sent among the pulse width modulating chip IC, by logic control circuit among the pulse width modulating chip IC, the corresponding lengthening of Continuity signal time meeting of pulse signal output end 11,14, thereby at the inferior current waveform that extremely can obtain the pulsewidth broad of mutual inductor B1, then the magnitude of voltage of output is higher than the actual output voltage signal value of battery pack.
Realized constant control by this constant-voltage control circuit to the battery pack output voltage, for guaranteeing the stable of output voltage, this circuit also carries out another signal input part 1 that dividing potential drop is sampled and fed back to pulse width modulating chip IC to the output voltage of this assembled battery by resistance R 1, R2, thereby carries out two closed loops controls in this assembled battery.
Moreover, another signal input part 10 of pulse width modulating chip IC also is connected with external control devices (as single-chip microcomputer) control signal output ends Kw by divider resistance R5, R6, makes external control devices carry out external control to the output of this assembled battery easily.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (16)
1, a kind of Rechargeable battery pack is characterized in that: described Rechargeable battery pack is to be composed in parallel by a group or more battery pack; Described battery pack comprises two rechargeable cell that connection status is controlled at least; Described rechargeable cell is connected mutually.
2, Rechargeable battery pack according to claim 1 is characterized in that: the positive pole of described battery pack also is connected with the common port of a charge/discharge selector switch; The charging end of described charge/discharge selector switch directly or by unidirectional breakover element is connected with charge power supply indirectly; The discharge end of described charge/discharge selector switch directly or by another unidirectional breakover element is connected with the output of described Rechargeable battery pack indirectly.
3, Rechargeable battery pack according to claim 1 and 2 is characterized in that: described rechargeable cell is connected by selector switch; Described selector switch has selecting side, No. 1 selected end, No. 2 selected ends; Described selecting side is connected with the negative pole of rechargeable cell; Described No. 1 selected end is connected with the positive pole of adjacent next rechargeable cell; Described No. 2 selected ends are connected with the negative pole of described battery pack; In described battery pack, except that first rechargeable cell that is positioned at this battery anode end, the positive pole of all the other rechargeable cell also is connected with the charge power supply end by unidirectional breakover element.
4, Rechargeable battery pack according to claim 3 is characterized in that: also be provided with state control circuit, normal data communication interface in the described Rechargeable battery pack; The signal end of described state control circuit is connected with positive pole, the normal data communication interface of described rechargeable cell respectively; The control end of described state control circuit is connected with the control end of described charge/discharge selector switch, the control end of selector switch respectively.
5, Rechargeable battery pack according to claim 4 is characterized in that: described state control circuit is a single-chip microcomputer.
6, Rechargeable battery pack according to claim 4 is characterized in that: described normal data communication interface is USB communication interface or RS232 interface or RS485 interface.
7, Rechargeable battery pack according to claim 1 is characterized in that: described rechargeable cell is made of chargeable electric core, first control switch and second control switch at least; Described chargeable electric core is with in parallel with second control switch again after first control switch is connected.
8, Rechargeable battery pack according to claim 7 is characterized in that: described rechargeable cell also comprises telemetry circuit; The input end of described telemetry circuit is connected with the output of described chargeable electric core; The discharge control end of described telemetry circuit is connected with the control end of described first control switch; The charging control end of described telemetry circuit is connected with the control end of described first control switch.
9, according to claim 7 or 8 described Rechargeable battery packs, it is characterized in that: described first control switch is controllable switch element or gate-controlled switch circuit; Described controllable switch element is switching transistor or relay; The control end of described switching transistor or relay is connected with the discharge control end or the charging control end of described telemetry circuit; Described gate-controlled switch circuit is to be composed in series by two switching transistors that are parallel with unidirectional breakover element at least, or be composed in series by two relays that are parallel with unidirectional breakover element, this circuit has two control ends at least and is connected with discharge control end, the charging control end of described telemetry circuit respectively.
10, according to claim 7 or 8 described Rechargeable battery packs, it is characterized in that: the control end of described first control switch also is electrically connected with the control end of external control circuit.
11, according to claim 7 or 8 described Rechargeable battery packs, it is characterized in that: the output of described chargeable electric core also is connected with the signal end of external control circuit.
12, according to claim 7 or 8 described Rechargeable battery packs, it is characterized in that: described second control switch is switching transistor or relay; The control end of described switching transistor or relay is connected with the control end of external control circuit.
13, Rechargeable battery pack according to claim 7 is characterized in that: described chargeable electric core is lithium-ion electric core or ni-mh electricity core or NI-G electricity core.
14, Rechargeable battery pack according to claim 1 and 2, it is characterized in that: also further be provided with constant voltage circuit in the described Rechargeable battery pack, and the output of former Rechargeable battery pack is transferred to the voltage input end of described constant voltage circuit, and the output of described constant voltage circuit is set at the new output of described Rechargeable battery pack.
15, Rechargeable battery pack according to claim 14 is characterized in that: described constant voltage circuit comprises input control module and power output unit at least; A signal input part of described input control module is connected with the input of described constant voltage circuit, and the new output of another signal input part and described Rechargeable battery pack is electrically connected; The control signal end of described input control module is connected with the control end of described power output unit; The output of described power output unit is connected with the new output of described Rechargeable battery pack.
16, Rechargeable battery pack according to claim 15 is characterized in that: another signal input part of described input control module is connected with the control end of described state control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03243158 CN2612082Y (en) | 2003-04-04 | 2003-04-04 | Rechargeable battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03243158 CN2612082Y (en) | 2003-04-04 | 2003-04-04 | Rechargeable battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2612082Y true CN2612082Y (en) | 2004-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03243158 Expired - Lifetime CN2612082Y (en) | 2003-04-04 | 2003-04-04 | Rechargeable battery pack |
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| CN (1) | CN2612082Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834325A (en) * | 2010-05-17 | 2010-09-15 | 林道勇 | Secondary battery pack |
| CN101834311A (en) * | 2010-05-17 | 2010-09-15 | 林道勇 | Lithium secondary battery bank |
| CN101931093A (en) * | 2009-06-22 | 2010-12-29 | 萨爽 | Have and be used for rechargeable battery pack inner and external charging/output function connector |
| CN101557105B (en) * | 2009-05-19 | 2013-03-13 | 浙江大学 | Device and method for prolonging service life of series direct current power supply unit groups |
| TWI405383B (en) * | 2010-03-17 | 2013-08-11 | Univ Chienkuo Technology | Intelligent charge and discharge system |
| CN105471050A (en) * | 2016-01-13 | 2016-04-06 | 惠州市美亚飞电器有限公司 | Intelligent protection management method for lithium battery |
| CN110266573A (en) * | 2019-07-16 | 2019-09-20 | 河北磐茂科技有限公司 | More piece point control circuit based on 485 communications |
| TWI718406B (en) * | 2017-09-29 | 2021-02-11 | 美商科斯莫燈飾公司 | Power supply device |
-
2003
- 2003-04-04 CN CN 03243158 patent/CN2612082Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557105B (en) * | 2009-05-19 | 2013-03-13 | 浙江大学 | Device and method for prolonging service life of series direct current power supply unit groups |
| CN101931093A (en) * | 2009-06-22 | 2010-12-29 | 萨爽 | Have and be used for rechargeable battery pack inner and external charging/output function connector |
| TWI405383B (en) * | 2010-03-17 | 2013-08-11 | Univ Chienkuo Technology | Intelligent charge and discharge system |
| CN101834325A (en) * | 2010-05-17 | 2010-09-15 | 林道勇 | Secondary battery pack |
| CN101834311A (en) * | 2010-05-17 | 2010-09-15 | 林道勇 | Lithium secondary battery bank |
| CN105471050A (en) * | 2016-01-13 | 2016-04-06 | 惠州市美亚飞电器有限公司 | Intelligent protection management method for lithium battery |
| CN105471050B (en) * | 2016-01-13 | 2018-06-26 | 惠州市美亚飞电器有限公司 | A kind of lithium battery intelligent conservative management method |
| TWI718406B (en) * | 2017-09-29 | 2021-02-11 | 美商科斯莫燈飾公司 | Power supply device |
| CN110266573A (en) * | 2019-07-16 | 2019-09-20 | 河北磐茂科技有限公司 | More piece point control circuit based on 485 communications |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130408 Granted publication date: 20040414 |