CN205429705U - Protection shield circuit - Google Patents
Protection shield circuit Download PDFInfo
- Publication number
- CN205429705U CN205429705U CN201520883226.0U CN201520883226U CN205429705U CN 205429705 U CN205429705 U CN 205429705U CN 201520883226 U CN201520883226 U CN 201520883226U CN 205429705 U CN205429705 U CN 205429705U
- Authority
- CN
- China
- Prior art keywords
- circuit
- protection board
- control circuit
- board circuit
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004065 semiconductor Substances 0.000 claims description 26
- 230000002265 prevention Effects 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a protection shield circuit, it is including charge control circuit, the control circuit that discharges, a plurality of triode, a plurality of diode, a plurality of resistance, a plurality of electric capacity and reset switch, the control circuit, the control circuit that discharges of charging includes a plurality of MOS pipes. Compared with the prior art, the utility model discloses the benefit that internal resistance of cell measuring device has lies in: when the protection shield appear under -voltage, overflow, during short -circuit protection, need not break off the direct protection shield circuit who presses the reset switch just can resume work of load, easy operation is efficient.
Description
[technical field]
This utility model relates to lithium battery protection board circuit engineering field, particularly relates to a kind of protection board circuit.
[background technology]
The lithium battery protection board used in the market occur under-voltage, cross stream, after short circuit, need load to disconnect, cut off have to be off load when output uses next time protection board can be made to recover normal work.And when load and battery have fixed, output cannot be cut off and cause battery consumable complete, now after protection, disconnecting consumers extremely bothers, and time loss is long, and efficiency is low.And when applying on similar startup power supply, if car load is fitted without low tension switch and selects very difficult disconnecting consumers, when disconnecting output protection, it is impossible to recover, thus affect the use starting power supply.
Sign in this, be necessary to provide a kind of new protection board circuit to overcome the deficiencies in the prior art in fact.
[utility model content]
The purpose of this utility model be to provide a kind of when protection board occur under-voltage, cross stream, short-circuit protection time, it is not necessary to the protection board circuit that disconnecting consumers directly just can be resumed work by reset switch.
To achieve these goals; this utility model provides a kind of protection board circuit; it includes charging control circuit, charge/discharge control circuit, multiple audion, multiple diode, multiple resistance, multiple electric capacity and reset switch; described charging control circuit, charge/discharge control circuit include multiple metal-oxide-semiconductor; described protection board circuit also includes and door; described charging control circuit includes re-charge control port; described charge/discharge control circuit includes that control of discharge port, described control of discharge port connect described the 4th foot with door.
As a kind of improvement of this utility model protection board circuit, described protection board circuit also includes gathering the under-voltage and IC element of overvoltage and connects the mistake of IC element bipod respectively and put and overcharge protection and control port.
As a kind of improvement of this utility model protection board circuit, described Cross prevention controls port and is connected with described reset switch.
As a kind of improvement of this utility model protection board circuit, the model of described IC element is S-8261 type element.
As a kind of improvement of this utility model protection board circuit, described protection board circuit also includes self-lock switch.
Compared with prior art; this utility model apparatus for measuring battery internal resistance has the advantage that: when protection board occur under-voltage, cross stream, short-circuit protection time; need not the protection board circuit that disconnecting consumers directly just can be resumed work by reset switch, efficiency simple to operate is high.
[accompanying drawing explanation]
Fig. 1 is this utility model protection board circuit connecting relation figure.
Fig. 2 to Fig. 4 is this utility model protection board circuit diagram.
[detailed description of the invention]
In order to make the purpose of this utility model, technical scheme and Advantageous Effects become apparent from understanding, below in conjunction with the drawings and specific embodiments, this utility model is further elaborated.It should be appreciated that the detailed description of the invention described in this specification is only used to explain this utility model, it is not intended to limit this utility model.
Refer to shown in Fig. 1; for the fundamental relation figure of this utility model protection board circuit, it includes that one group of battery connected 10, protection board B0-B8 connect battery 10 for gathering the voltage of battery 10, connecting the load 11 of battery 10 positive pole, the P-/C-connecting the negative pole of load 11 and the B-of connection battery 10 negative pole.P-/C-is used to carry out discharge and recharge with the indirect load 11 of the positive pole of battery 10.Load 11 can also be charger.
Refer to shown in Fig. 2 to Fig. 4, this utility model protection board circuit includes IC element U1, electric capacity C12, resistance R21-R25, audion Q6, Q7 and port BC0, BC1, DSG, CHG.Port BC0, BC1 connect the negative pole of battery respectively and positive pole carries out voltage acquisition.1st foot of element U1 connects DSG port after connecting resistance R23 and audion Q6, resistance R21; 3rd foot of U1 communicates with CHG port after connecting R24, audion Q7, R22; element U1 can gather under-voltage and overvoltage, and DSG, CHG were to put and overcharge protection to control port respectively.IC element U1 model in the present embodiment is S-8261, and audion model is MMBT3906.
Refer to shown in Fig. 3, this utility model protection board circuit includes that metal-oxide-semiconductor control circuit controls the charge and discharge of battery, and it includes that control of discharge metal-oxide-semiconductor circuit 21 and charging control metal-oxide-semiconductor circuit 22.Control of discharge metal-oxide-semiconductor circuit 21 includes metal-oxide-semiconductor M1, M5, Zener diode ZD2 and resistance R5, R10.Charging controls metal-oxide-semiconductor circuit 22 and includes metal-oxide-semiconductor M6, M7, M9, diode D2, D3, Zener diode ZD3, ZD4, resistance R7-R9, port B-, P-, P-C-, G1, G2, G4, CHG.P-connects the drain D of control of discharge metal-oxide-semiconductor, and B-mono-terminates battery cathode, and another terminates control of discharge metal-oxide-semiconductor circuit 21.The negative pole of P-/C-mono-terminating load, another termination charging controls metal-oxide-semiconductor circuit 22.G1 is the driving port of electric discharge metal-oxide-semiconductor circuit 21, and G2 is the driving port of charging metal-oxide-semiconductor, and G4 connects self-lock switch and controls end.In the present embodiment, the model of M9 is 2N7000, and the model of other metal-oxide-semiconductor is IPB015N04N.
Refer to shown in Fig. 4, this utility model protection board circuit includes switching K1, K2, power supply VCC, resistance R11-R17, R117, electric capacity C6, C7, diode D7-D9, transistor Q2 and door U18, port G1-G4, P-and DSG.K2 one end connects DSG port, other end ground connection.One termination G2 port and the VCC of K1.The other end of K1 is connected to G3 port by resistance R16, diode D8, and is connected to G4 by resistance R117 and diode D9.VCC is that 12V, K1 connect self-lock switch, and K2 connects reset switch, and P-takes over charge and discharge and controls the drain D of metal-oxide-semiconductor, meets control of discharge end G1 with the 4th foot of door U18, and G3 meets switch K1 and controls electric discharge metal-oxide-semiconductor.
The operation principle of this utility model protection board circuit is, during normal condition, DSG, CHG are high level, and drive end G1, G2 of electric discharge metal-oxide-semiconductor and charging metal-oxide-semiconductor are high level, and metal-oxide-semiconductor turns on, can normally discharge and recharge.When U1 collect battery occur under-voltage time, DSG becomes low level.When DSG step-down level, then the audion Q2 in Fig. 4 conducting, the crus secunda step-down level of U18, delivery outlet the 4th foot step-down level of U18, G1 step-down level then discharge metal-oxide-semiconductor turn off, stop electric discharge.When U1 collect battery overvoltage occurs time, CHG becomes low level.When CHG step-down level, then metal-oxide-semiconductor M9 conducting, charging controls metal-oxide-semiconductor grid G ground connection and turns off, and stops charging.Cannot charge and discharge after battery discharge protection, now press reset switch K2, then audion Q2 disconnects; U18 crus secunda becomes high level, and the 4th foot control of discharge mouth is output as high level, and metal-oxide-semiconductor turns on; protection board just can be made to recover normal condition, and battery can proceed discharge and recharge.
When need not battery operated time, press self-lock switch K1, G3, G4 become high level, in like manner, so that it may so that discharge and recharge metal-oxide-semiconductor drive end becomes low level, metal-oxide-semiconductor turns off, and battery stops output.Pressing K1 when again needing and using makes self-lock switch recover normal condition, then presses reset switch K2, and battery just can continue discharge and recharge.
Compared with prior art, this utility model protection board circuit protection board occur under-voltage, cross stream, short-circuit protection time directly press reset switch and just can recover normal condition, it is possible to carry out discharge and recharge, the most simple to operate, efficiency height.In other embodiments, the model of each element is not limited to the model that this specification is mentioned.
This utility model protection board circuit; it is not restricted to described in description and embodiment; therefore for the personnel of familiar field, it is easily achieved additional advantage and amendment; therefore in the case of the spirit and scope of the general concept limited without departing substantially from claim and equivalency range, this utility model be not limited to specific details, representational equipment and shown here as with describe examples shown.
Claims (5)
1. a protection board circuit; it is characterized in that: include charging control circuit, charge/discharge control circuit, multiple audion, multiple diode, multiple resistance, multiple electric capacity and reset switch; described charging control circuit, charge/discharge control circuit include multiple metal-oxide-semiconductor; described protection board circuit also includes and door; described charging control circuit includes re-charge control port; described charge/discharge control circuit includes control of discharge port, and described control of discharge port connects a described foot with door.
2. protection board circuit as claimed in claim 1, it is characterised in that: described protection board circuit also includes gathering the under-voltage and IC element of overvoltage and connects the mistake of IC element bipod respectively and put and overcharge protection and control port.
3. protection board circuit as claimed in claim 2, it is characterised in that: described Cross prevention controls port and is connected with described reset switch.
4. protection board circuit as claimed in claim 2, it is characterised in that: the model of described IC element is S-8261 type element.
5. protection board circuit as claimed in claim 2, it is characterised in that: described protection board circuit also includes self-lock switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520883226.0U CN205429705U (en) | 2015-11-05 | 2015-11-05 | Protection shield circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520883226.0U CN205429705U (en) | 2015-11-05 | 2015-11-05 | Protection shield circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205429705U true CN205429705U (en) | 2016-08-03 |
Family
ID=56518139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520883226.0U Expired - Fee Related CN205429705U (en) | 2015-11-05 | 2015-11-05 | Protection shield circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205429705U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018099357A1 (en) * | 2016-11-30 | 2018-06-07 | 比亚迪股份有限公司 | Overcharge protection circuit and overdischarge protection circuit for power battery |
| CN108233489A (en) * | 2018-03-11 | 2018-06-29 | 深圳大力神科技有限公司 | A kind of charging lock-in circuit and its lithium battery source protection plate |
-
2015
- 2015-11-05 CN CN201520883226.0U patent/CN205429705U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018099357A1 (en) * | 2016-11-30 | 2018-06-07 | 比亚迪股份有限公司 | Overcharge protection circuit and overdischarge protection circuit for power battery |
| CN108233489A (en) * | 2018-03-11 | 2018-06-29 | 深圳大力神科技有限公司 | A kind of charging lock-in circuit and its lithium battery source protection plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20160803 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20160803 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210428 Granted publication date: 20160803 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240428 Granted publication date: 20160803 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 |