Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H35/00—Switches operated by change of a physical condition
  • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/572—Means for preventing undesired use or discharge
  • H01M50/574—Devices or arrangements for the interruption of current
  • H01M50/579—Devices or arrangements for the interruption of current in response to shock
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H1/00—Contacts
  • H01H1/58—Electric connections to or between contacts; Terminals
  • H01H2001/5877—Electric connections to or between contacts; Terminals with provisions for direct mounting on a battery pole
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H35/00—Switches operated by change of a physical condition
  • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
  • H01H35/141—Details
  • H01H35/143—Resetting means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• Inertial battery switch for electric accumulator of auto-mobile machines.
• the invention relates to an inertial circuit breaker for an electric accumulator battery of auto-mobile devices preventing fire in the event of a collision.
• the battery switch To be able to be used by a very large audience, the battery switch must be able to: - be very easily installed on one of the vehicle battery terminals without special tools without changing habits;
• the ideal solution would be to be able to integrate it directly into the battery at one of its terminals.
• the systems offered do not meet, or are incomplete, these specifications. They are either too complicated, too bulky or too expensive to make, too fragile or unreliable or not adaptable to the battery terminals.
• the purpose of the inertial battery circuit breaker according to the invention is to overcome all of these drawbacks and in addition to provide a very simple solution which can be incorporated directly into the battery.
• the inertial battery switch for electric accumulator of self-moving vehicles comprises a metal ball maintained in pressure on its seats by a spring, able to disengage from its seats by dynamic inertia during '' a shock, the lower part of the support box being immobilized on one of the terminals of the battery II is characterized in that the means for pressurizing the ball on its seats consists of an elastically deformable metal washer, calibrated for setting in pressure of the inertial element between its seats; the fixed lower support seat and the mobile upper support seat of the inertial element each consist of a lead alloy washer.
• the body of the battery isolator is integrated in the battery under the normal location of one of its terminals. It forms a clipped and glued box on the upper wall of the battery.
• the upper seat of the inertial ball is inserted into the lower face of a shouldered metal rod, screwed and locked in the battery terminal, capable of sliding in the cover of the housing.
• the lower seat is inserted into the head of a rivet crossing the bottom of the case and maintaining a connection lug to the corresponding pole of the battery.
• the lower part of its housing is engaged and fixed to one of the battery terminals by means of a clamping collar by means of a piece of alloy lead engaged on the battery terminal and forming the lower seat of the ball; it has a flat washer in the upper part and annular arms extending downwards and engaged in corresponding grooves in the lower part of the housing, the rod comprising the upper seat passes through the cover of the housing in which it is guided and receives a washer threaded.
• the threaded end of the rod is provided for the installation and immobilization of the cable lug connecting the accumulator to the electrical circuit of the auto-mobile machine.
• the washer in treated steel, elastically deformable is folded in the shape of a cone, the periphery of which is flat over a small width; it comprises two series of radial cuts, the first starting from the center and the second from the periphery, its bending characteristics are provided to allow it a sufficient stroke to let escape the ball, but also to maintain a frank contact of the ball on its seats during brutal vertical accelerations due to "potholes" and other road accidents.
• the metal ball is kept under pressure on its seats by a compression spring arranged in the lower part of the housing immobilized on one of the terminals of the battery.
• the movable upper seat is fixed on the cover of the housing along a vertical axis XX 'opposite the first fixed seat.
• the housing is made to slide on the support of the lower seat, so as to put the ball under pressure on said lower seat by means of the compression spring arranged in the space taken up by the terminal of the battery and annularly thereto.
• the support of the lower seat consists of a sheath internally shoulder maintaining the seat in abutment on the top of the terminal and shoulder externally to constitute the upper support of the spring and the upper part of the internal sliding guide of said housing.
• the sheath is provided with a clamp to immobilize the case on the battery terminal.
• the box is fixed outside the battery, the axis XX ′ being horizontal, the fixing is carried out by means of lugs integral with the box which has two seats on two rods acting as a terminal, arranged in opposition, one fixed, and the other movable by means of the spring washer.
• - Fig.3 a sectional elevation of a third version of the battery switch according to the invention incorporated in the battery;
• - Fig.4 an example of an elastic washer for maintaining the pressure on the inertial cut-off member;
• the first version of battery switch has a part 1 for positioning and clamping the battery switch assembly on the terminal 2 of the battery.
• the clamping is obtained by means of a collar 3 acting on the periphery of the terminal.
• the clamping piece 1 maintains a contact washer 4 resting on the top of the terminal 2.
• This washer can be made of lead alloy or in metal which does not create an electrolytic torque on the terminal 2.
• a small 5 A washer made of lead alloy is used inserted in a housing machined in the washer 4.
• This washer 5 has a cavity 6 preformed to receive the inertial cut-off element 7 consisting of a metal ball which does not cause electrolytic torque with the lead.
• the ball 7 is in abutment against a movable seat constituted by a second washer 5 B made of lead alloy, also comprising a preformed imprint.
• the preforming of these imprints is carried out, at the time of assembly, on a tool exerting both a thrust and a rotation to obtain an always correct alignment of the two seats 5 of the ball along the axis XX 'to suitably ensure the passage of the battery current in normal operation.
• This arrangement is obtained at a very low cost, without the need for very precise horn machining, this is the case in known battery switches.
• the second seat 5B is inserted into a housing 8 of an intermediate piece 9 acting as a terminal for receiving the terminal lug 10 of the electric cable 11.
• the terminal 9 has a bearing shoulder on the underside of the cover 12 of the body of battery switch that it crosses, its end is threaded. It is immobilized by a threaded washer 13, made of brass serving as a support for the terminal 10.
• the cover 12 is glued to the top of the cylindrical body 14 of the battery switch.
• This body made of plastic, has a lower part 15 of a smaller diameter, ending in an internal shoulder 16 acting as a lower support for a compression spring 17, calibrated to let the ball escape according to the kinetic energy of the shock defined for the vehicle power cut.
• the spring is in upper support on a shoulder 18 of the part 1 mounted on the battery terminal. The sliding of the cylindrical lower part of the movable body 14 is guided on the shoulders 16 and 18 for supporting the spring 17.
• the ball 7 In normal operation, the ball 7 is placed in abutment on its seats 5. During a strong collision the kinetic energy communicated to the ball causes the lifting of the upper seat and the ejection of the ball which finds itself trapped in the position 19, shown in mixed lines. The power supply is then cut to avoid the risk of fire. A slope of 15 to 20 ° was given to the bottom 20 of the battery switch body and 21 from above the clamping piece 1 on terminal 2. If the vehicle is still in a running condition after the impact. The battery circuit can be restored by pulling on the nut 21 for clamping the terminal 10 to compress the spring 17 and raise the seat 7, which has the effect of allowing the ball to return to its place on its seat.
• Figure 2 shows a section in elevation of a second version of the battery switch according to the invention also in place on one of the terminals of a battery.
• the means for pressurizing the ball on its seats is constituted by an elastically deformable metal washer 25, calibrated for pressurizing the inertial element 7 between its seats; the movable upper support seat 5B of the inertial element 7 is also constituted by a lead alloy washer.
• the lower part of the housing 26 of the battery switch is engaged and fixed on one of the terminals 2 of a battery standard by means of a clamp 3, via a lead alloy part 27 ( Figure 5), engaged on terminal 2 of the battery and forming the lower seat 28 of the ball 7.
• This seat is engaged in a central hole in the housing 26 and comprises a flat washer in the upper part and annular arms 29 extending downward and engaged in corresponding grooves 30 in the lower part 31 of the housing.
• the rod 9 comprising the seat 5B crosses the cover 32 of the housing in which it is guided and receives a threaded washer 33 blocked on the end of the thread 34 allowing a slight downward movement until it rests on said cover 32.
• the end threaded rod 9 is provided for the establishment and immobilization of the terminal 10 of the cable 11 connecting the accumulator to the electrical circuit of the self-moving vehicle.
• This arrangement significantly simplifies Figure 1, makes the housing 26 perfectly stable on the terminal 2.
• the movable part is no longer formed by the rod 9 receiving the electric cable. Reliability is greatly increased and the cost lowered.
• the deformable washer 25 contributes to maintaining and centering the rod 9 facilitating its sliding.
• the electrical contact on the battery is better ensured.
• the circuit is closed by pulling on the nut 21 ( Figure 1) to lift the seat 5B and let the ball 7 return to its place.
• FIG. 3 shows a section in elevation of a third version of the battery switch according to the invention integrated in the battery.
• the means for pressurizing the ball on its 5 seats 5A, 5B is also constituted by an elastically deformable metal washer 25, calibrated for pressurizing the inertial element 7 between its seats.
• the fixed lower support seat and the movable upper support seat 5B of the inertial element 7 are also each constituted by a washer of preformed lead alloy.
• the battery switch box is integrated in the battery under the normal location of one of its terminals. Box 35 of
• the lower seat 5 A is inserted into the head of a rivet 42 passing through the bottom of the case 35 and now a terminal 43 for connection to the corresponding pole of the battery.
• the lower part of the housing has a slope of 20 °, as for the previous figures to ensure the return of the ball on its seat when the electrical circuit is closed.
• the battery switch box is designed to be mass produced and installed at the last moment on the batteries. It is intended to be stored, the ball being out of circuit. The ball is closed in the circuit only when the batteries are filled.
• Said washer comprises two series of radial cuts, the first 45 starting from the center and the second 46 starting from the periphery. Its flexural characteristics are provided to allow it to run enough to allow the ball 7 to escape, but also to maintain a frank contact of the ball on its seats during brutal vertical accelerations due to "potholes" and other accidents. of the road alike.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Connection Of Batteries Or Terminals (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9460870

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Family Cites Families (5)

• 1994
  • 1994-03-10 FR FR9402751A patent/FR2717303B1/fr not_active Expired - Fee Related
• 1995
  • 1995-03-10 EP EP95912290A patent/EP0699339A1/de not_active Ceased
  • 1995-03-10 AU AU19532/95A patent/AU1953295A/en not_active Abandoned
  • 1995-03-10 WO PCT/FR1995/000274 patent/WO1995024727A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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