CN203326579U - Cell protection board having voltage scaling function - Google Patents
Cell protection board having voltage scaling function Download PDFInfo
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- CN203326579U CN203326579U CN2013203147901U CN201320314790U CN203326579U CN 203326579 U CN203326579 U CN 203326579U CN 2013203147901 U CN2013203147901 U CN 2013203147901U CN 201320314790 U CN201320314790 U CN 201320314790U CN 203326579 U CN203326579 U CN 203326579U
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- battery
- protecting plate
- battery protecting
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a cell protection board having the voltage scaling function, which comprises a cell management chip U1 connected in parallel with the anode and cathode input terminal of the cell protection board, a switching tube U2 connected in parallel with the cell management chip U1, and a voltage converter connected in parallel with the anode and cathode output terminal of the cell protection board. According to the technical scheme of the utility model, due to the adoption of the cell protection board, the utilization times of a cell are improved, and the cost is therefore saved.
Description
Technical field
The utility model relates to the integrated circuit (IC) design field, relates in particular to a kind of battery protecting plate of elevating function with voltage.
Background technology
Due to the develop rapidly of dynamic lithium battery in recent years, be no matter that production technology or material technology improve upper, or the advantage of price, sizable breakthrough is arranged, therefore, the epoch that substitute lead-acid battery are more and more nearer.No matter electric bicycle or back-up source, its occupation rate of market also starts mad expansion naturally.Simultaneously, for the Safety and Service Life of battery, effective protection of lithium battery also becomes research topic now.
Baffle is the very parts of core in power brick, and it is mainly the surface-mounted integrated circuit shielded for chargeable (referring generally to lithium battery).
But, do not possess the voltage up-down function in existing battery protecting plate, what caused battery utilizes number of times lower.
The utility model content
The purpose of this utility model is to provide a kind of battery protecting plate of elevating function with voltage, has improved the number of times that utilizes of battery, has saved cost.
The purpose of this utility model is achieved through the following technical solutions:
A kind of battery protecting plate of elevating function with voltage; it is characterized in that, comprising: the battery management chip U1 in parallel with battery protecting plate both positive and negative polarity input, the switching tube U2 in parallel with this battery management chip U1 and the voltage changer in parallel with this battery protecting plate both positive and negative polarity output.
Aforesaid voltage changer comprises: the boost control circuit J1 be connected in parallel and voltage reduction circuit IC2.
Aforesaid voltage changer also comprises: energy storage inductor L1, and the one end is connected with the electrode input end of voltage changer, and the other end is connected with the input of described boost control circuit J1.
Aforesaid voltage changer also comprises: the sustained diode 2 that is connected in parallel on described boost control circuit J1 two ends.
Aforesaid voltage changer also comprises: be connected in parallel on switching tube Q1 and thermistor RT in the link in parallel of described boost control circuit J1 and voltage reduction circuit IC2.
Aforesaid voltage changer also comprises: the filter capacitor C1 and the filter capacitor C5 that are connected in parallel on respectively described boost control circuit J1 output and input.
The technical scheme provided by above-mentioned the utility model can be found out; increase ascending, descending pressure-controlled circuit on battery protecting plate, and control cell voltage by baffle, improve or reduce cell output voltage; thereby improved the number of times that utilizes of battery, reduced waste.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The circuit diagram of the battery protecting plate of a kind of elevating function with voltage that Fig. 1 provides for the utility model embodiment;
The circuit diagram of a kind of voltage changer that Fig. 2 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on embodiment of the present utility model, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to protection range of the present utility model.
Embodiment
The circuit diagram of the battery protecting plate of a kind of elevating function with voltage that Fig. 1 provides for the utility model embodiment.As shown in Figure 1, this battery protecting plate mainly comprises:
The battery management chip U1 in parallel with battery protecting plate both positive and negative polarity input, the switching tube U2 in parallel with this battery management chip U1 and the voltage changer in parallel with this battery protecting plate both positive and negative polarity output.
As shown in Figure 2, aforesaid voltage changer comprises: the boost control circuit J1 be connected in parallel and voltage reduction circuit IC2.
Further, aforesaid voltage changer also comprises: energy storage inductor L1, and the one end is connected with the electrode input end of voltage changer, and the other end is connected with the input of described boost control circuit J1.
Further, aforesaid voltage changer also comprises: the sustained diode 2 that is connected in parallel on described boost control circuit J1 two ends.
Further, aforesaid voltage changer also comprises: be connected in parallel on switching tube Q1 and thermistor RT in the link in parallel of described boost control circuit J1 and voltage reduction circuit IC2.
Further, aforesaid voltage changer also comprises: the filter capacitor C1 and the filter capacitor C5 that are connected in parallel on respectively described boost control circuit J1 output and input.
For the ease of understanding the battery protecting plate in the present embodiment, below for each element and annexation thereof in Fig. 1 and Fig. 2, be described further respectively.
As shown in Figure 1, this battery protecting plate mainly comprises: resistance R 1-R2, capacitor C 1, battery management chip U1, switching tube U2 and voltage changer (DC/DC).Wherein, B+ and B-mean respectively the both positive and negative polarity input of battery circuit board.Battery management chip U1 and B+ and B-are connected in parallel, and switching tube U2 and U1 are connected in parallel.Battery management chip U1 is for carrying out the overvoltage of battery, under-voltage detection and over-current detection; Opening and turn-offing according to the output control U2 detected again.For example, the charge and discharge of battery all passes through baffle, when cell voltage being detected, is charged to 4.2V, and baffle disconnects charging, and the protection cell voltage no longer rises; Be put into 2.8V when cell voltage being detected, baffle disconnects electric discharge, and the protection cell voltage no longer descends.
R1 and R2 in Fig. 1 are resistance, and C1 is electric capacity.P+ and P-mean respectively the both positive and negative polarity output of battery circuit board, and be connected to respectively the both positive and negative polarity input of voltage changer (DC/DC), by described voltage changer, the voltage received is converted the voltage (for example, according to the type of battery, the predetermined value of output voltage being made as to 0V-4.2V) of output predetermined value.Usually, both positive and negative polarity and corresponding being connected with P+, P-under battery charging state, the DC/DC output is connected with electrical appliance.
As shown in Figure 2, be the circuit diagram of described voltage changer.It mainly comprises: be boost control circuit J1, voltage reduction circuit IC2, RT thermistor (for controlling output voltage), energy storage inductor L1, filter capacitor (C1, C3 and C5), sampling resistor (R5-R9), sustained diode 2 and switching tube Q1.Wherein, the end of energy storage inductor L1 is connected with the electrode input end of voltage changer, and the other end is connected with the input of described boost control circuit J1; Sustained diode 2 is connected in parallel on the two ends of described boost control circuit J1; Switching tube Q1 and thermistor RT are connected in parallel in the link in parallel of described boost control circuit J1 and voltage reduction circuit IC2; Filter capacitor C1 and filter capacitor C5 are connected in parallel on respectively output and the input of described boost control circuit J1.
Main composition and the inner annexation thereof of the above battery protecting plate provided for the present embodiment.The production process of this battery protecting plate is easy to control, handling safety, flow process are short, raw material are easily purchased, and the saving of this battery protecting plate become low this; On the other hand, utilize this battery protecting plate to charge and can improve the number of times that utilizes of battery battery, cut the waste.
In experimentation; after the battery protecting plate that has used ternary material and LiFePO 4 material making cylindrical lithium ion battery to provide by the present embodiment; can make the 3.6V of original cell output or the 3.2V lower voltage voltage to 1.5V; reach the output that primary cell is used; but substituting primary cell uses and repeated charge; improved the number of times that utilizes of battery, cut the waste.
In addition; use lithium titanate material to make the battery protecting plate that cylindrical lithium ion battery provides by the present embodiment; the 1.2V voltage that can make original cell export is brought up to the voltage of 1.5V; reach the output voltage that primary cell is used; but substituting primary cell uses and repeated charge; improved the number of times that utilizes of battery, cut the waste.And lithium titanate material has and has extended cycle life, the characteristics that fail safe is good, cycle life can reach 10000 times, residual capacity 80%, the useful life of improving thus battery.
Embodiment of the present utility model increases ascending, descending pressure-controlled circuit, and controls cell voltage by baffle on battery protecting plate, improves or reduces cell output voltage, thereby having improved the number of times that utilizes of battery, has reduced waste.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (6)
1. the battery protecting plate of an elevating function with voltage; it is characterized in that, comprising: the battery management chip U1 in parallel with battery protecting plate both positive and negative polarity input, the switching tube U2 in parallel with this battery management chip U1 and the voltage changer in parallel with this battery protecting plate both positive and negative polarity output.
2. battery protecting plate according to claim 1, is characterized in that, described voltage changer comprises: the boost control circuit J1 be connected in parallel and voltage reduction circuit IC2.
3. battery protecting plate according to claim 2, is characterized in that, described voltage changer also comprises: energy storage inductor L1, and the one end is connected with the electrode input end of voltage changer, and the other end is connected with the input of described boost control circuit J1.
4. battery protecting plate according to claim 2, is characterized in that, described voltage changer also comprises: the sustained diode 2 that is connected in parallel on described boost control circuit J1 two ends.
5. battery protecting plate according to claim 2, is characterized in that, described voltage changer also comprises: be connected in parallel on switching tube Q1 and thermistor RT in the link in parallel of described boost control circuit J1 and voltage reduction circuit IC2.
6. battery protecting plate according to claim 2, is characterized in that, described voltage changer also comprises: the filter capacitor C1 and the filter capacitor C5 that are connected in parallel on respectively described boost control circuit J1 output and input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203147901U CN203326579U (en) | 2013-06-03 | 2013-06-03 | Cell protection board having voltage scaling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203147901U CN203326579U (en) | 2013-06-03 | 2013-06-03 | Cell protection board having voltage scaling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326579U true CN203326579U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203147901U Expired - Fee Related CN203326579U (en) | 2013-06-03 | 2013-06-03 | Cell protection board having voltage scaling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110837037A (en) * | 2019-11-13 | 2020-02-25 | 福建星云电子股份有限公司 | Secondary overvoltage detection circuit for lithium battery pack protection plate |
-
2013
- 2013-06-03 CN CN2013203147901U patent/CN203326579U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110837037A (en) * | 2019-11-13 | 2020-02-25 | 福建星云电子股份有限公司 | Secondary overvoltage detection circuit for lithium battery pack protection plate |
| CN110837037B (en) * | 2019-11-13 | 2021-12-14 | 福建星云电子股份有限公司 | Secondary overvoltage detection circuit for lithium battery pack protection plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20200603 |