CN202696124U - Protective circuit of battery pack for wireless measurement-while-drilling apparatus - Google Patents
Protective circuit of battery pack for wireless measurement-while-drilling apparatus Download PDFInfo
- Publication number
- CN202696124U CN202696124U CN 201220302515 CN201220302515U CN202696124U CN 202696124 U CN202696124 U CN 202696124U CN 201220302515 CN201220302515 CN 201220302515 CN 201220302515 U CN201220302515 U CN 201220302515U CN 202696124 U CN202696124 U CN 202696124U
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- Prior art keywords
- protective tube
- cell
- battery
- diode
- battery pack
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- 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
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Abstract
The utility model belongs to the field of a wireless measurement-while-drilling apparatus needing to be powered by a battery. A protective circuit of a battery pack for the wireless measurement-while-drilling apparatus comprises a general protective tube, a general diode, a single-body battery, a bypath diode and a single-body battery protective tube, wherein the general protective tube, the general diode and the single-body battery are connected in series; and the bypath diode and the single-body battery protective tube are connected with the single-body battery in parallel after being connected in series. The previous serial connection of the single-body battery protective tube and a single-body circuit is changed into parallel connection and the single-body battery protective tube is fused when the bypath diode has a short-circuit fault; when external large current appears, only the general protective tube is fused and the single-body battery protective tube is not fused, so that the protection effect is guaranteed, and the problem that the battery pack is discarded caused by that the battery pack cannot be repaired due to the fact that the protective tube at the middle part of the battery pack is fused caused by the external large current can be solved; and the protective circuit has a good effect after being actually used.
Description
Technical field
The utility model belongs to needs and uses battery-powered wireless measuring instrument while drilling field.
Background technology
At present, the most of High Temperature Lithium Cell group that adopts of the wireless measuring instrument while drilling of directional drilling use is powered.This High Temperature Lithium Cell group is composed in series by 5-12 single lithium battery.For preventing that battery pack is short-circuited, the protective circuit that is comprised of protective tube and diode is equipped with in battery pack inside.Referring to Fig. 1, this present protective circuit, the cell protective tube is connected in series on every cell; Because battery pack is with glue perfusion sealing, in case because the large electric current in outside causes the protective tube fusing of middle part, battery pack place, battery pack can not be repaired and be scrapped.
The utility model content
The utility model is intended to overcome the deficiency of existing High Temperature Lithium Cell group internal protection circuitry, and a kind of new protective circuit is provided.
A kind of wireless measuring instrument while drilling protective circuit of battery pack; comprise total protective tube, total diode, cell, bypass diode and cell protective tube; described total protective tube, total diode and cell series connection is characterized in that: in parallel with cell after described bypass diode is connected with the cell protective tube.
The utility model by being connected in series of original and monomer circuit, changing the cell protective tube to be connected in parallel into, and the cell protective tube fuses when short trouble appears in bypass diode; Only total protective tube fusing when outside large electric current occurring; the cell protective tube does not fuse, and has namely guaranteed above-mentioned protective effect, has prevented from again causing because of the large electric current in outside the protective tube fusing of middle part, battery pack place; battery pack can not be repaired and the problem of scrapping, and is good through practical effect.
Description of drawings
Fig. 1 is present protection short circuit figure.
Fig. 2 is new protective circuit figure.
Among the figure: 1 total protective tube, 2 total diodes, 3 bypass diodes, 4 cell protective tubes, 5 cells.
Embodiment
With reference to the accompanying drawings 2; the utility model is further described: a kind of wireless measuring instrument while drilling protective circuit of battery pack; comprise total protective tube 1, total diode 2, cell 5, bypass diode 3 and cell protective tube 4; described total protective tube 1, total diode 2 and cell 5 series connection is characterized in that: in parallel with cell 5 after described bypass diode 3 is connected with cell protective tube 4.
Described cell has 5-12, is cascaded one by one.
The corresponding cell of described bypass diode and cell protective tube is provided with 5-12, is connected in parallel on respectively corresponding cell both positive and negative polarity.
Described battery is DD type high-temperature lithium thionyl chloride battery.
Above-mentioned total protective tube 1 fuses when outside large electric current occurring, avoids battery pack to cause the accident because of external short circuit or large electric current.
Above-mentioned total diode 2 prevents outside to batteries charging.
Above-mentioned bypass diode 3, a certain cell fault in battery pack, electric current formed bypass through diode when internal resistance increased, and prevented that out of order cell from causing the accident because of forced electric discharge.
Above-mentioned cell protective tube 4 fuses when short trouble appears in bypass diode, avoids cell to cause the accident because of short circuit.
Claims (4)
1. a wireless measuring instrument while drilling is with the protective circuit of battery pack; comprise total protective tube, total diode, cell, bypass diode and cell protective tube; described total protective tube, total diode and cell series connection is characterized in that: in parallel with cell after described bypass diode is connected with the cell protective tube.
2. protective circuit according to claim 1 is characterized in that: described cell has 5-12, one by one series connection.
3. protective circuit according to claim 1 is characterized in that: the corresponding cell of described bypass diode and cell protective tube is provided with 5-12, is connected in parallel on respectively corresponding cell both positive and negative polarity.
4. protective circuit according to claim 1, it is characterized in that: described battery is DD type high-temperature lithium thionyl chloride battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302515 CN202696124U (en) | 2012-06-26 | 2012-06-26 | Protective circuit of battery pack for wireless measurement-while-drilling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220302515 CN202696124U (en) | 2012-06-26 | 2012-06-26 | Protective circuit of battery pack for wireless measurement-while-drilling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696124U true CN202696124U (en) | 2013-01-23 |
Family
ID=47551685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220302515 Expired - Fee Related CN202696124U (en) | 2012-06-26 | 2012-06-26 | Protective circuit of battery pack for wireless measurement-while-drilling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696124U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018236493A1 (en) * | 2017-06-20 | 2018-12-27 | General Electric Company | Battery management system |
| CN114336582A (en) * | 2021-11-12 | 2022-04-12 | 国网浙江省电力有限公司丽水供电公司 | Intelligent interconnection device based on super capacitor energy storage |
-
2012
- 2012-06-26 CN CN 201220302515 patent/CN202696124U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018236493A1 (en) * | 2017-06-20 | 2018-12-27 | General Electric Company | Battery management system |
| CN114336582A (en) * | 2021-11-12 | 2022-04-12 | 国网浙江省电力有限公司丽水供电公司 | Intelligent interconnection device based on super capacitor energy storage |
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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 |
Granted publication date: 20130123 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |