CN221199904U - Broken wire detection device for lithium battery protection - Google Patents
Broken wire detection device for lithium battery protection Download PDFInfo
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- CN221199904U CN221199904U CN202322861881.3U CN202322861881U CN221199904U CN 221199904 U CN221199904 U CN 221199904U CN 202322861881 U CN202322861881 U CN 202322861881U CN 221199904 U CN221199904 U CN 221199904U
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- lithium battery
- detection device
- fixedly connected
- lithium
- broken wire
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 128
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 239000011888 foil Substances 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of lithium battery protection, in particular to a broken wire detection device for lithium battery protection, which comprises a lithium battery pack base, wherein a supporting frame is fixedly connected to the outer side of the top of the lithium battery pack base, sliding grooves are formed in two sides of the top of the supporting frame, the supporting frame is slidably connected with a sliding top plate through the sliding grooves, and a plurality of power-on foils are fixedly connected to the lithium battery pack base and the sliding top plate. The utility model has the advantages that: through set up electromagnetic means on broken string detection device, under the normal condition, make electromagnetic means circular telegram attract the magnetic path, make the top coincidence of slip roof and braced frame, then connect electric foil and the contact of lithium cell's top, make the whole state that is in circular telegram of lithium cell, when broken string detection device detects the lithium cell group broken string, then make electromagnetic means outage, slip roof slides to one side under the pulling force effect of extension spring, thereby make the electrode staggering of electric foil and lithium cell, thereby make whole lithium cell group outage.
Description
Technical Field
The utility model relates to the technical field of lithium battery protection, in particular to a broken wire detection device for lithium battery protection.
Background
In recent years, electric tools, electric vehicles and the like are gradually integrated into our lives, and the analysis of the power supply system thereof finds that a plurality of lithium batteries are basically adopted as the main power supply thereof, so that the electric vehicle has the advantages of small volume, high energy density, no memory effect, long cycle life, high battery voltage, low self-discharge rate and the like. However, the lithium battery has potential safety hazards, the voltage of the battery is increased due to excessive charging, the battery is expanded and exploded, the battery characteristics are damaged due to excessive discharging, and the service life of the battery is seriously influenced, which is particularly serious in a system powered by a plurality of lithium batteries. The common lithium battery protection chip has corresponding protection mechanisms aiming at overcharge, overdischarge and the like of the battery, but when the connection line between the battery and the protection chip is disconnected, the system cannot detect the state, and the whole battery pack is still charged or discharged, so that serious potential safety hazards exist.
The invention discloses a broken line detection system for a plurality of lithium battery protection chips in China patent CN202010737795.X, which can detect the state when the connection line between a battery and the protection chips is disconnected, stop the charging or discharging of a battery pack, prevent potential safety hazards caused by overcharging or overdischarging of the battery, and improve the safety and reliability of the system.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides a broken wire detection device for protecting a lithium battery, which effectively solves the defects of the prior art.
The aim of the utility model is achieved by the following technical scheme: the utility model provides a broken wire detection device for lithium cell protection, includes the lithium cell group base, the outside fixedly connected with braced frame at lithium cell group base top, the spout has all been seted up to the both sides at braced frame top, the braced frame has a slip roof through spout sliding connection, all fixedly connected with connects the electric foil on lithium cell group base and the slip roof, be provided with a plurality of lithium cells in the lithium cell group base.
Optionally, the position of the electric connection foil corresponds to the position of the anode and the cathode at two ends of the lithium battery one by one, wires are fixedly connected to one sides of the lithium battery pack base and the sliding top plate, and the wires and the lithium battery form a complete circuit through the electric connection foil.
The technical scheme is adopted: through setting up lithium cell group base, braced frame and slip roof in the outside of lithium cell, can play the guard action to the lithium cell, improve lithium cell group's stability, and the slip roof of top can connect the position of electric foil through the slip adjustment to make the whole and circuit disconnection of lithium cell, make lithium cell group can be safer when the broken string.
Optionally, both sides at the top of the supporting frame are fixedly connected with broken wire detection devices, the broken wire detection devices are electrically connected with a circuit of the lithium battery pack, and the broken wire detection devices detect broken wire conditions of the lithium battery pack.
Optionally, the both sides of slip roof all fixedly connected with magnetic path, one side fixedly connected with electromagnetic means of broken string detection device, electromagnetic means is in the circular telegram state under the normal circumstances, make electromagnetic means disconnection when broken string detection device detects lithium cell circuit broken string state.
Optionally, the outside one end fixedly connected with extension spring of spout, extension spring's one end and magnetic path fixed connection, extension spring's pulling force is less than the magnetic force to the magnetic path when electromagnetic means circular telegram.
The technical scheme is adopted: through set up electromagnetic means on broken string detection device, under the normal condition, make electromagnetic means circular telegram, produce the suction to the magnetic path, make the top coincidence of slip roof and braced frame, then connect electric foil and the contact of lithium cell's top, make the whole state that is in of circular telegram of lithium cell, when broken string detection device detects the broken string of lithium cell group, then make electromagnetic means outage, slip roof slides to one side under the pulling force effect of extension spring, thereby make the electrode that connects electric foil and lithium cell stagger, thereby make whole lithium cell group outage, the device can be under the circumstances that lithium cell group broken string, make lithium cell electrode automatic and foil mistake voluntarily, thereby make the whole circuit breaker of group battery, the potential safety hazard that the broken string of group caused is avoided.
Optionally, when the electromagnetic device adsorbs the sliding top plate, the power-on foil corresponds to the motor position of the lithium battery, and the tensile force of the extension spring is greater than the sliding friction force of the sliding top plate.
The utility model has the following advantages:
1. This broken string detection device for lithium cell protection through set up lithium cell group base, braced frame and slip roof in the outside of lithium cell, can play the guard action to the lithium cell, improves lithium cell group's stability, and the slip roof of top can connect the position of electric foil through the slip adjustment to make the whole and circuit disconnection of lithium cell, make lithium cell group can be safer when the broken string.
2. According to the broken line detection device for protecting the lithium battery, the electromagnetic device is arranged on the broken line detection device, under normal conditions, the electromagnetic device is electrified to generate suction force to the magnetic block, the sliding top plate is overlapped with the top of the supporting frame, the power-on foil is contacted with the top of the lithium battery, the whole lithium battery is in an electrified state, when the broken line detection device detects the broken line of the lithium battery pack, the electromagnetic device is powered off, the sliding top plate slides to one side under the action of the tension spring, so that the power-on foil is staggered with the electrode of the lithium battery, the whole lithium battery pack is powered off, and the device can automatically lead the electrode of the lithium battery to be wrong with the foil under the condition of broken line of the lithium battery pack, so that the whole battery pack is broken, and the potential safety hazard caused by broken line of the battery pack is avoided.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model in a normal state;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;
FIG. 3 is a schematic diagram of the structure of the broken line state of the present utility model;
Fig. 4 is an enlarged schematic view of the structure of fig. 3B according to the present utility model.
In the figure: the lithium battery pack comprises a 1-lithium battery pack base, a 2-supporting frame, a 3-sliding chute, a 4-sliding top plate, a 5-power-connection foil, a 6-lithium battery, 7-wires, an 8-broken wire detection device, 9-magnetic blocks, a 10-electromagnetic device and 11-tension springs.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
As shown in fig. 1 to 4, a broken line detection device for protecting lithium battery comprises a lithium battery base 1, wherein a supporting frame 2 is fixedly connected to the outer side of the top of the lithium battery base 1, sliding grooves 3 are formed in two sides of the top of the supporting frame 2, a sliding top plate 4 is slidably connected to the supporting frame 2 through the sliding grooves 3, a plurality of power-on foils 5 are fixedly connected to the lithium battery base 1 and the sliding top plate 4, and a plurality of lithium batteries 6 are arranged in the lithium battery base 1.
Example 1: the position of the power connection foil 5 corresponds to the positions of the positive electrodes and the negative electrodes at two ends of the lithium battery 6 one by one, one sides of the lithium battery pack base 1 and the sliding top plate 4 are fixedly connected with electric wires 7, the electric wires 7 form a complete circuit with the lithium battery 6 through the power connection foil 5, the lithium battery pack base 1, the support frame 2 and the sliding top plate 4 are arranged on the outer side of the lithium battery 6, the lithium battery can be protected, the stability of the lithium battery pack is improved, the position of the power connection foil 5 can be adjusted through sliding of the sliding top plate 4 above, and therefore the whole lithium battery 6 is disconnected with the circuit, and the lithium battery pack can be safer when broken.
Example 2: both sides at the top of the supporting frame 2 are fixedly connected with broken wire detection devices 8, the broken wire detection devices 8 are electrically connected with a circuit of the lithium battery pack, and the broken wire detection devices 8 detect broken wire conditions of the lithium battery pack.
Example 3: the two sides of the sliding top plate 4 are fixedly connected with magnetic blocks 9, one side of the broken wire detection device 8 is fixedly connected with an electromagnetic device 10, the electromagnetic device 10 is in an electrified state under normal conditions, and the electromagnetic device 10 is disconnected when the broken wire detection device 8 detects the broken wire state of the lithium battery circuit.
Example 4: one end outside the chute 3 is fixedly connected with an extension spring 11, one end of the extension spring 11 is fixedly connected with a magnetic block 9, the pulling force of the extension spring 11 is smaller than the magnetic force of the magnetic block 9 when the electromagnetic device 10 is electrified, the electromagnetic device 10 is electrified on the broken line detection device 8, suction force is generated on the magnetic block 9 under normal conditions, the top of the sliding top plate 4 and the top of the supporting frame 2 are overlapped, the power-on foil 5 is contacted with the top of the lithium battery 6, the whole lithium battery is in an electrified state, when the broken line detection device 8 detects that the lithium battery is broken, the electromagnetic device 10 is powered off, the sliding top plate 4 slides to one side under the action of the pulling force of the extension spring 11, so that the power-on foil 5 and the electrode of the lithium battery 6 are staggered, and the whole lithium battery is powered off.
Example 5: when the electromagnetic device 10 adsorbs the sliding top plate 4, the power-on foil 5 corresponds to the motor position of the lithium battery 6, and the tensile force of the tension spring 11 is larger than the sliding friction force of the sliding top plate 4.
The working principle of the utility model is as follows:
S1, under normal conditions, the electromagnetic device 10 is electrified, suction is generated on the magnetic block 9, the sliding top plate 4 is overlapped with the top of the supporting frame 2, and then the power-on foil 5 is contacted with the top of the lithium battery 6, so that the whole lithium battery is in an electrified state;
S2, when the broken line detection device 8 detects that the lithium battery pack is broken, the electromagnetic device 10 is powered off, the sliding top plate 4 slides to one side under the action of the tensile force of the tension spring 11, and therefore the power connection foil 5 is staggered with the electrode of the lithium battery 6, and the whole lithium battery pack is powered off.
Compared with the prior art, the utility model has the following beneficial effects compared with the prior art:
1. This broken string detection device for lithium cell protection through set up lithium cell group base 1, braced frame 2 and slip roof 4 in the outside of lithium cell 6, can play the guard action to the lithium cell, improves lithium cell group's stability, and the slip roof 4 of top can connect the position of electric foil 5 through the slip adjustment to make lithium cell 6 whole and circuit disconnection, make lithium cell group can be safer when the broken string.
2. According to the broken line detection device for protecting the lithium battery, the electromagnetic device 10 is arranged on the broken line detection device 8, under normal conditions, the electromagnetic device 10 is electrified, the magnetic block 9 is attracted, the sliding top plate 4 is overlapped with the top of the supporting frame 2, the power-on foil 5 is contacted with the top of the lithium battery 6, the whole lithium battery is in an electrified state, when the broken line detection device 8 detects the broken line of the lithium battery, the electromagnetic device 10 is powered off, the sliding top plate 4 slides to one side under the action of the tension spring 11, so that the power-on foil 5 is staggered with the electrode of the lithium battery 6, the whole lithium battery is powered off, and the device can automatically lead the electrode of the lithium battery to be wrong with the foil under the condition of broken line of the lithium battery, so that the whole battery is broken, and the potential safety hazard caused by broken line of the battery is avoided.
Claims (6)
1. A broken wire detection device for lithium battery protection is characterized in that: including lithium battery base (1), the outside fixedly connected with braced frame (2) at lithium battery base (1) top, spout (3) have all been seted up at the both sides at braced frame (2) top, braced frame (2) are through spout (3) sliding connection have slip roof (4), all fixedly connected with connects electric foil (5) on lithium battery base (1) and slip roof (4), be provided with a plurality of lithium batteries (6) in lithium battery base (1).
2. The breakage detection device for lithium battery protection according to claim 1, wherein: the position of the power-on foil (5) corresponds to the positions of the positive electrodes and the negative electrodes at the two ends of the lithium battery (6) one by one, one sides of the lithium battery pack base (1) and the sliding top plate (4) are fixedly connected with electric wires (7), and the electric wires (7) and the lithium battery (6) form a complete circuit through the power-on foil (5).
3. The breakage detection device for lithium battery protection according to claim 2, wherein: the lithium battery pack is characterized in that two sides of the top of the supporting frame (2) are fixedly connected with broken wire detection devices (8), the broken wire detection devices (8) are electrically connected with a circuit of the lithium battery pack, and the broken wire detection devices (8) detect broken wire conditions of the lithium battery pack.
4. The broken wire detection device for protecting a lithium battery according to claim 3, wherein: the lithium battery circuit disconnection detection device is characterized in that magnetic blocks (9) are fixedly connected to two sides of the sliding top plate (4), an electromagnetic device (10) is fixedly connected to one side of the disconnection detection device (8), the electromagnetic device (10) is in an electrified state under normal conditions, and the electromagnetic device (10) is disconnected when the disconnection detection device (8) detects the lithium battery circuit disconnection state.
5. The broken wire detection device for protecting a lithium battery according to claim 4, wherein: one end outside spout (3) fixedly connected with extension spring (11), the one end and the magnetic path (9) fixed connection of extension spring (11), the pulling force of extension spring (11) is less than the magnetic force to magnetic path (9) when electromagnetic means (10) are circular telegram.
6. The broken wire detection device for protecting a lithium battery according to claim 5, wherein: when the electromagnetic device (10) adsorbs the sliding top plate (4), the power-on foil (5) corresponds to the motor position of the lithium battery (6), and the tensile force of the tension spring (11) is larger than the sliding friction force of the sliding top plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322861881.3U CN221199904U (en) | 2023-10-25 | 2023-10-25 | Broken wire detection device for lithium battery protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322861881.3U CN221199904U (en) | 2023-10-25 | 2023-10-25 | Broken wire detection device for lithium battery protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221199904U true CN221199904U (en) | 2024-06-21 |
Family
ID=91520267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322861881.3U Active CN221199904U (en) | 2023-10-25 | 2023-10-25 | Broken wire detection device for lithium battery protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221199904U (en) |
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2023
- 2023-10-25 CN CN202322861881.3U patent/CN221199904U/en active Active
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