CN106784585A

CN106784585A - A kind of controllable disconnection safeties

Info

Publication number: CN106784585A
Application number: CN201611145043.4A
Authority: CN
Inventors: 高玮
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2017-05-31

Abstract

The present invention relates to a kind of battery protecting apparatus, there is provided a kind of controllable disconnection safeties.Described device includes：Housing, conductor, opening actuating mechanism, break trigger mechanism can be disconnected.When battery occurs the dangerous situations such as overheat, short circuit, collision, this device battery cell can be cut off from battery pack network rapidly with active control, so as to the situation for avoiding further chain short circuit, increase the security of battery pack.

Description

A kind of controllable disconnection safeties

Technical field

The present invention relates to cell safety technology, what is used in more particularly to a kind of electric automobile and hybrid vehicle can Control the safeties for disconnecting.

Background technology

Electric automobile and hybrid vehicle are required for battery pack as energy-storage system.With battery energy density increasingly Greatly, the danger of battery spontaneous combustion or blast also gradually rises, and especially vehicle collides or when battery is squeezed.Mesh Preceding battery pack is mostly using battery cell first parallel connection, the burst mode of rear series connection.When a battery cell is short-circuited, it is simultaneously Other battery cells of connection can also occur chain short circuit.In order to avoid such case occurs, some producers are in each battery cell Both positive and negative polarity all installed fuse additional, when battery cell electric current is excessive, then fuse heating fusing, so as to cut off and other batteries Connection.

The drawbacks of this design has certain：

1. fuse heating fusing needs the regular hour, such as several seconds, or more than ten seconds.Battery may during this Burn, late.

2. when anticipation is to dangerous situation, it is impossible to actively cut off fuse.For example when monitoring in battery pack temperature exception Rise, or monitor that smog or battery pack are intake, and when vehicle generation fierce collision, battery may face a danger. Now wished before battery is not short-circuited, just actively cut off the connection between battery cell, prevent trouble before it happens, improve system Security.General insurance silk is unable to reach this purpose.

3. fuse usually relies on resistance heating fusing, so its resistance ratio is larger, can also be generated heat during normal work disappears Consuming electric power.After tens sections even batteries up to a hundred are monomer series-connected, these fuses can cause the resistance of battery pack to increase, drop The operating efficiency of low battery pack, and generate heat.

The content of the invention

To solve the above problems, the present invention proposes a kind of controllable disconnection safeties, and this safeties can be controlled actively System disconnects the connection between battery cell.

The controllable disconnection insurance includes：Housing, conductor, opening actuating mechanism, break trigger mechanism can be disconnected.

Preferably, the system includes：Housing, conductor, opening actuating mechanism can be disconnected.

Preferably, also by break trigger mechanism triggering opening actuating mechanism make that conductor can be disconnected including break trigger mechanism Disconnect.

Preferably, conductor can be disconnected to be connected in series with the connecting wire of each battery cell；Or conductor can be disconnected belong to A part for the connecting wire.

Preferably, the opening actuating mechanism is explosive gas generator, or chemical attack system.

Preferably, the opening actuating mechanism has reative cell, pressure releasing chamber, and wire shut-off mechanism.

Wire shut-off mechanism can use two ways, and one is possess pressure relief window, and pressure relief window closes on that can disconnect conductor, is being unloaded Pressure window is beaten to begin to switch off and can disconnect conductor；Two is that, with piston and cylinder, can disconnect conductor through piston and cylinder, in piston fortune Conductor cut-out can be disconnected when dynamic

Preferably, chemical attack system has chemical reagent room and reative cell.

Preferably, the break trigger mechanism can be heating resistor system or high-voltage spark generator.

Preferably, the conductor that disconnects can also be in itself fuse.

A kind of method that can actively disconnect battery cell connection in vehicle, is actively disconnected and can be disconnected using the device in above-mentioned The connection of conductor and other parts.

Insured using the controllable disconnection, the present invention at least has advantages below：

1. in the case of necessary, system can be increased with active control cut-out battery cell and the connection of battery circuit Security, prevents trouble before it happens.

2. the conductive material of controllable disconnection insurance can select the very low conductor of resistance, so that the internal resistance of battery pack is reduced, Increase the service efficiency of battery, save electric energy, reduce heating.

Brief description of the drawings

Above-mentioned is only the general introduction of technical solution of the present invention, in order to better understand technological means of the invention, below With reference to accompanying drawing, the present invention is described in further detail with specific embodiment.

Fig. 1 is existing battery fuse connection diagram；

Fig. 2 is controllable disconnection insurance connection diagram of the invention；

Fig. 3 is one embodiment of the present of invention；

Fig. 4 is one embodiment of the present of invention；

Fig. 5 is one embodiment of the present of invention；

Fig. 6 is one embodiment of the present of invention；

Specific embodiment

In said apparatus, housing plays a protective role, and prevents structure, liquid or the gas of disconnection process from revealing； Conductor can be disconnected to be connected in series with the connecting wire of each battery cell, wire is used for the connection of controllable disconnection insurance；Can Conductor is disconnected in circuit normal work, electric action is played, when opening operation is carried out, conductor can be disconnected and is broken, cut off Circuit is connected；Active opening actuating mechanism is to force the mechanism for disconnecting conductor cut-out, can be triggered by break trigger mechanism.

Preferably, the opening actuating mechanism is explosive gas generator, and controllable disconnection insurance has reative cell, pressure release Pressure release window between room, and reative cell and pressure releasing chamber.Gas generating material is positioned in reative cell, by break trigger mechanism , there is explosive chemical reaction in triggering, and moment produces a large amount of gases, breaks through pressure release window and enters pressure releasing chamber, what pressure release window was opened Meanwhile, conductor is disconnected using explosive force cut-out, realize circuitry cuts.

Preferably, the opening actuating mechanism is explosive gas generator, and controllable disconnection insurance has reative cell, pressure release Room, cylinder and piston.Gas generating material is positioned in reative cell, by the triggering of break trigger mechanism, explosivityization occurs Reaction is learned, and moment produces a large amount of gases, promotes piston along cylinder moving, while cut off disconnecting conductor, realizes circuitry cuts.

Preferably, the opening actuating mechanism is chemical attack system.Controllable disconnection insurance is with chemical reagent room and instead Answer room.Be corrosive material in chemical reagent room, can fall disconnect conductor with fast erosion.In the presence of break trigger mechanism, The Corrosive Materia of chemical reagent room enters reative cell, and is chemically reacted with the disconnection conductor in reative cell, from And cut off conductor.It is preferred that reative cell outside includes a protection room, wherein comprising the material for neutralizing Corrosive Materia, in order to avoid overflow Corrosive Materia corrodes miscellaneous part.

Preferably, one can disconnect insurance institution one or more wire can be cut off.

Preferably, the break trigger mechanism can be high-voltage spark generator, can produce electric spark, and triggering disconnection is held Row mechanism works.

Preferably, the break trigger mechanism can be heating resistor system, and moment high temperature can be produced by high current, touch Hair opening actuating mechanism work.

Fig. 1 is the existing connected mode of battery pack, and usual battery cell 101 is first in parallel, then connects, and constitutes battery pack. The positive pole and negative pole of battery cell, all respectively have one section of fuse 103 to be connected, when a battery cell between connecting wire 102 When being short-circuited, the fuse heating on electrode disconnects, and prevents from bringing disaster to other batteries.

Fig. 2 is the connection diagram of controllable disconnection safeties of the invention.The electrode and wire of each battery cell 101 Between 102, a controllable disconnection safeties 201 of having connected, and increased control line 202.Control line 202 can control triggering The disconnection of controllable disconnection safeties 201.

Fig. 3 is one embodiment of the present of invention, and controllable disconnection safeties include wire 301, for connecting with outside line Connect；Conductor 302 can be disconnected, the wire 301 at insurance two ends is connected to, during circuit normal work, electric action is played, in opening operation When, it is cut off；Break trigger mechanism 303, for triggering gas generating material blast；Reative cell 304, occurs for storing gas Material, after triggering chemical reaction, gas generating material reacts herein, and produces a large amount of gases；Gases at high pressure can break through This weak structure of pressure release window 306 during pressure release window 306 is opened, can be disconnected by impulsive force cut-out and led into pressure releasing chamber 305 Body 302, so as to cut off circuit connection.Housing 307 plays a part of to protect and prevent leakage.

Fig. 4 is one embodiment of the present of invention, and controllable disconnection safeties include wire 301, for connecting with outside line Connect；Conductor 302 can be disconnected, the wire 301 at insurance two ends is connected to, and through cylinder 308 and piston 309.Circuit normal work When, conductor can be disconnected and play electric action, in opening operation, it is cut off；Break trigger mechanism 303, occurs for triggering gas Material explodes；Reative cell 304, for storing gas generating material, after triggering chemical reaction, gas generating material occurs herein Reaction, and produce a large amount of gases；Gases at high pressure promote piston 309 to be moved along cylinder 308, and in this process, piston cut-out can Conductor 302 is disconnected, so as to cut off circuit connection.Housing 307 plays a part of to protect and prevent leakage.

Fig. 5 Fig. 6 is embodiments of the invention, and controllable disconnection insurance includes wire 401, can disconnect conductor 402, break trigger Mechanism 403, chemical reagent room 404, reative cell 405 and housing 406.When break trigger mechanism 403 produces break trigger to operate, Corrosive Materia in chemical reagent room 404 enters reative cell 405, and with the disconnected conductor 402 in reative cell 405 Chemically react, and produce disconnection, so as to cut off circuit connection.

Although illustrating the present invention with reference to exemplary embodiment, it should be appreciated that the invention is not restricted to disclosed exemplary Embodiment.Scope of the following claims should be endowed explanation most wide with comprising all of modification and equivalent structure and work( Energy.

Claims

1. it is a kind of for battery connect in controllable disconnection safeties, it is characterised in that the system includes：Housing, can break Convince body, opening actuating mechanism by patient analysis.

2. controllable disconnection safeties according to claim 1, it is characterised in that also including break trigger mechanism, by breaking Opening trigger mechanism triggering opening actuating mechanism makes that conductor disconnection can be disconnected.

3. controllable disconnection safeties according to claim 1-2, it is characterised in that conductor and each battery list can be disconnected The connecting wire of body is connected in series；Or the part that conductor belongs to the connecting wire can be disconnected.

4. controllable disconnection safeties according to claim 1-3, it is characterised in that the opening actuating mechanism is blast Property gas generator, or chemical attack system.

5. controllable disconnection safeties according to claim 1-4, it is characterised in that opening actuating mechanism is fiery gas During body generator, the opening actuating mechanism has reative cell, pressure releasing chamber, and can disconnect conductor shut-off mechanism.

6. controllable disconnection safeties according to claim 1-5, it is characterised in that wire shut-off mechanism can use two kinds Mode, one is possess pressure relief window, and pressure relief window closes on that can disconnect conductor, and when pressure relief window is opened, cut-out can disconnect conductor；Two are With piston and cylinder, conductor through piston and cylinder can be disconnected, conductor cut-out can be disconnected in piston movement.

7. controllable disconnection safeties according to claim 1-5, it is characterised in that opening actuating mechanism is chemical attack During system, chemical attack system has chemical reagent room and reative cell.

8. controllable disconnection safeties according to claim 1-7, it is characterised in that the break trigger mechanism can be Heating resistor system or high-voltage spark generator.

9. controllable disconnection safeties according to claim 1-8, it is characterised in that the conductor that disconnects also may be used in itself Being fuse.

10. a kind of method that can actively disconnect battery cell connection in vehicle, it is characterised in that using in claim 1-9 Device actively disconnects and can disconnect conductor, the connection of cut-out battery and other batteries.