CN104021991A - Electromagnetic relay with coil transient suppression protection circuit and mounting method thereof - Google Patents
Electromagnetic relay with coil transient suppression protection circuit and mounting method thereof Download PDFInfo
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- CN104021991A CN104021991A CN201410230356.4A CN201410230356A CN104021991A CN 104021991 A CN104021991 A CN 104021991A CN 201410230356 A CN201410230356 A CN 201410230356A CN 104021991 A CN104021991 A CN 104021991A
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Abstract
The invention discloses an electromagnetic relay with a coil transient suppression protection circuit and a mounting method thereof. A relay coil is arranged at one side of a base; the positive electrode leading out rod and the negative electrode leading out rod of the coil are arranged in a penetrating mode on the base; the positive electrode leading out rod and the negative electrode leading out rod of the coil are respectively electrically connected with one end of the relay coil; the coil transient suppression protection circuit is arranged on a ceramic substrate and a coil transient suppression protection module is formed; the above coil transient suppression protection module is fixed on a bottom plate; a coil positive electrode pad of the coil transient suppression protection module and a power positive electrode pad are connected onto the coil positive electrode leading out rod via spot welding or bonding wire; and a coil negative electrode pad of the coil transient suppression protection module and a power negative electrode pad are connected onto the coil negative electrode leading out rod via spot welding or bonding wire. Thus, reliability of the electromagnetic relay can be improved, and the size of the electromagnetic relay can be reduced.
Description
Technical field
The present invention relates to relay technical field, be specifically related to a kind of electromagnetic relay and installation method thereof that suppresses protective circuit with coil transient state.
Background technology
In use, in the time of coil blackout, the perceptual electric energy of its storage can produce the surge voltage up to 1500 volts to electromagnetic relay on direct current supply line.In circuit, a large amount of solid line (solid state device) that use, so must suppress relay coil, are limited in 50～80 volts by its voltage peak.In the time of relay power-off, transient state suppresses that unit absorbs and the energy of dissipation coil.
The transient state suppressor mode of hermetically sealed electromagnetic relay generally can adopt 5 kinds of combinations such as diode, voltage-stabiliser tube-diode, voltage-stabiliser tube, voltage stabilizing didoe-voltage stabilizing didoe, TVS pipe (special transient state killer tube), and need in above combination, increase reverse polarity protection's diode according to circuit and form transient state and suppress unit.No matter adopt which kind of form, the two poles of the earth that transient state suppresses unit all need correspondence to be parallel on two lead-in wires of coil.
Using in the circuit of hermetically sealed electromagnetic relay, as circuit board, to volume size requirements, not high or circuit board has sufficient space to arrange that transient state suppresses unit, can in circuit, this unit be placed and is arranged on circuit board, adopts external mode.Along with electrical equipment miniaturization development trend, the relay demand that the electrical equipment particularly using under specific condition has transient state to suppress unit to inside constantly increases.
Requiring the inner sealed relay that coil transient state inhibition protective circuit is installed is mostly the relay of small volume; its volume is below 1 cubic inch (25.6mm × 25.6mm × 25.6mm) mostly; the installation method that at present transient state suppresses unit normally the components and parts of its composition are arranged on coil or parcel in coil, suppress between the components and parts in unit, suppress being connected between the two poles of the earth, unit and lead-out wires of coil and all use the connection of soldering form.There are following four aspect deficiencies in this kind of mounting means:
A) coil continuous operation heating suppresses circuit and reversed polarity protection circuit to coil reliability and load capacity produce impact greatly, even may exceed the junction temperature of the nominal of circuit own, make circuit malfunction;
B) coil lead of relay is carefully poor with the manufacturability that transient state suppresses and anti-polarity circuit is connected, and operation easier is larger, and the hidden danger such as easy generating coil damage and rosin joint, decline relay reliability.
C) for sealed relay, the scaling powder that components and parts adopt scolding tin to connect can bring pollution, when suppress to cause not easy cleaning of scaling powder, the pollution that scaling powder brings easily to make relay occur contact unreliability and lose efficacy when portion is wrapped up in coil in unit under air-proof condition.
E) above installation method suppresses the fixed form of unit or winding volume is increased or increase in relay skeleton or supporting bracket to suppress unit and reinforce stator etc. and realize, in small size relay, realize difficulty large, also easily in the environment such as vibration, occur that inhibition unit comes off, maybe can not attach it to the situation of relay inside.
Along with system miniaturization development, require degree more and more higher to the miniaturization of device, a lot of occasions have proposed relay transient state to suppress and reversed polarity protection circuit designs by external to designing at relay inner transformation, according to the deficiency of original structure, the structure installation method of a kind of new relay Inside coil transient state inhibition and anti-polarity circuit is proposed; The method can solve the deficiency of above four aspects, is particularly suitable for using in miniature small-sized sealing electromagnetic relay.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of electromagnetic relay and installation method thereof that suppresses protective circuit with coil transient state, and it not only can improve the reliability of electromagnetic relay, and can reduce the volume of electromagnetic relay.
For addressing the above problem, the present invention is achieved by the following technical solutions:
Suppress an electromagnetic relay for protective circuit with coil transient state, it mainly suppresses protective circuit, base, relay coil, coil electrode leading-off rods and coil negative pole leading-off rods by coil transient state and forms; Relay coil is arranged on a wherein side of base; Coil electrode leading-off rods and coil negative pole leading-off rods all run through to be located on base, and one end of coil electrode leading-off rods and coil negative pole leading-off rods is positioned at a side of base, and the other end is the opposite side of base; Coil electrode leading-off rods and coil negative pole leading-off rods are electrically connected with one end of relay coil respectively; Described coil transient state suppresses protective circuit and is arranged on ceramic substrate, forms coil transient state and suppresses protection module; Above-mentioned coil transient state suppresses protection module and is fixed on base plate; Coil electrode pad C+ and positive source pad V+ that coil transient state suppresses protection module are connected on coil electrode leading-off rods by spot welding or bonding wire; Coil negative terminal pad C-and power cathode pad V-that coil transient state suppresses protection module are connected on coil negative pole leading-off rods by spot welding or bonding wire.
In such scheme, described coil transient state suppresses protection module and is directly fixed on base plate plane, or is fixed in the module slot of offering on base plate.
In such scheme, described coil transient state suppresses protection module and is fixed on base plate by Reflow Soldering.
In such scheme, it is the one in following 5 kinds of combinations that described coil transient state suppresses protective circuit,
Described coil transient state suppresses protective circuit and comprises diode V1, V2, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The negative electrode of the negative electrode of diode V1 and diode V2 is connected with coil electrode pad C+ simultaneously, and the anode of diode V2 is connected with coil negative terminal pad C-, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises diode V1, V3, voltage-stabiliser tube V3, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The anode of the negative electrode of diode V1 and voltage-stabiliser tube V2 is connecting coil positive terminal pad C+ simultaneously, and the negative electrode of the negative electrode of voltage-stabiliser tube V2 and diode V3 is connecting coil negative terminal pad C-simultaneously, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, diode V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of diode V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of diode V2;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, voltage-stabiliser tube V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of voltage-stabiliser tube V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of voltage-stabiliser tube V2;
Or described coil transient state inhibition protective circuit comprises transient state killer tube V1, coil electrode pad C+ and coil negative terminal pad C-; The anodic bonding coil negative terminal pad C-of transient state killer tube V1, the negative electrode connecting coil positive terminal pad C+ of transient state killer tube V1.
In such scheme, the components and parts that described coil transient state suppresses protective circuit inside are discrete component or bare chip; In the time that the components and parts of coil transient state inhibition protective circuit inside are discrete component, between components and parts and components and parts, and be connected by covering copper layer between components and parts and pad; In the time that the components and parts of coil transient state inhibition protective circuit inside are bare chip, between components and parts and components and parts, and be connected by covering copper layer or bonding wire between components and parts and pad.
In such scheme, described coil transient state inhibition protection module and relay coil are positioned at phase the same side of base.
An installation method that suppresses the electromagnetic relay of protective circuit with coil transient state, comprises the steps:
1. coil electrode leading-off rods and coil negative pole leading-off rods are all run through and be located on base, one end of coil electrode leading-off rods and coil negative pole leading-off rods is positioned at a side of base, and the other end is the opposite side of base;
2. coil transient state is suppressed to protective circuit and be arranged on ceramic substrate, form coil transient state and suppress protection module;
3. coil transient state being suppressed to protection module is fixed on base plate;
4. the coil electrode pad C+ and the positive source pad V+ that coil transient state are suppressed to protection module are connected on coil electrode leading-off rods by spot welding or bonding wire; Coil negative terminal pad C-and power cathode pad V-that coil transient state suppresses protection module are connected on coil negative pole leading-off rods by spot welding or bonding wire.
5. relay coil is arranged on to a wherein side of base;
6. coil electrode leading-off rods and coil negative pole leading-off rods are electrically connected with one end of relay coil respectively.
In said method, described coil transient state suppresses protection module and is directly fixed on base plate plane, or is fixed in the module slot of offering on base plate.
In said method, described coil transient state suppresses protection module and is fixed on base plate by Reflow Soldering.
In said method, it is the one in following 5 kinds of combinations that described coil transient state suppresses protective circuit,
Described coil transient state suppresses protective circuit and comprises diode V1, V2, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The negative electrode of the negative electrode of diode V1 and diode V2 is connected with coil electrode pad C+ simultaneously, and the anode of diode V2 is connected with coil negative terminal pad C-, and the anode of diode V1 meets positive source pad V+;
Or described coil transient state inhibition protective circuit comprises diode V1, V3, voltage-stabiliser tube V3, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The anode of the negative electrode of diode V1 and voltage-stabiliser tube V2 is connecting coil positive terminal pad C+ simultaneously, and the negative electrode of the negative electrode of voltage-stabiliser tube V2 and diode V3 is connecting coil negative terminal pad C-simultaneously, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, diode V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of diode V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of diode V2; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, voltage-stabiliser tube V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of voltage-stabiliser tube V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of voltage-stabiliser tube V2;
Or described coil transient state inhibition protective circuit comprises transient state killer tube V1, coil electrode pad C+ and coil negative terminal pad C-; The anodic bonding coil negative terminal pad C-of transient state killer tube V1, the negative electrode connecting coil positive terminal pad C+ of transient state killer tube V1.
In said method, the components and parts that described coil transient state suppresses protective circuit inside are discrete component or bare chip; In the time that the components and parts of coil transient state inhibition protective circuit inside are discrete component, between components and parts and components and parts, and be connected by covering copper layer between components and parts and pad; In the time that the components and parts of coil transient state inhibition protective circuit inside are bare chip, between components and parts and components and parts, and be connected by covering copper layer or bonding wire between components and parts and pad.
In said method, described coil transient state inhibition protection module and relay coil are positioned at phase the same side of base.
Compared with prior art, the present invention has following features:
1, coil transient state inhibition protective circuit is installed on baseboard for relay, compare and wrapped up (installation) portion's structure in coil, be more conducive to reduce the volume of coil, be more convenient for using in miniature little sealed relay (particularly 1 cubic inch below volume);
2, coil transient state suppresses protective circuit and the employing spot welding of base exit or Bonding interconnect, not only can adopt machine operation, easy to operate, the stability of parameter and high conformity; And reduced the scolding tin link that circuit connects, and reduce the pollution of scaling powder, be convenient to clean, can improve the contact reliability of hermetically sealed electromagnetic relay;
3, circuit directly adopts Reflow Soldering to be connected with base plate, forms good heat loss through conduction, and away from the thermal source of coil heating, circuit working reliability is largely increased.
Brief description of the drawings
Fig. 1 a)～Fig. 1 is e) that 5 kinds of discrete device type coil transient states suppress protective circuit structural representations; Fig. 1 a ')～Fig. 1 e ') for be respectively Fig. 1 a)～Fig. 1 end view e).
Fig. 2 a)～Fig. 2 is e) that 5 kinds of Hybrid assembling type coil transient states suppress protective circuit structural representations; Fig. 2 a ')～Fig. 2 e ') be respectively Fig. 2 a)～Fig. 2 end view e).
Fig. 3 a)～Fig. 3 is e) 5 kinds of coil transient states structure vertical views while suppressing protective circuits with base employing Plane Installation; Fig. 3 is the structure side view while suppressing protective circuit and base employing Plane Installation for coil transient state f).
Fig. 4 a)～Fig. 4 is e) 5 kinds of coil transient states structure vertical views when suppressing protective circuits and adopting grooved installation with base; Fig. 4 is the structure side view when suppressing protective circuit and base and adopt grooved installation for coil transient state f).
Number in the figure: 1, ceramic substrate; 2, cover copper layer; 3, discrete device; 4, bare chip; 5, lead-in wire; 6, base; 7, coil transient state suppresses protective circuit; 8, soldering sheet.
Embodiment
An installation method that suppresses the electromagnetic relay of protective circuit with coil transient state, comprises the steps:
1. coil electrode leading-off rods and coil negative pole leading-off rods are all run through and be located on base, one end of coil electrode leading-off rods and coil negative pole leading-off rods is positioned at a side of base, and the other end is the opposite side of base.
2. coil transient state is suppressed to protective circuit and be arranged on ceramic substrate, form coil transient state and suppress protection module.
In the present invention, it is the one in following 5 kinds of combinations that described coil transient state suppresses protective circuit, that is:
The first, described coil transient state suppresses protective circuit and comprises diode V1, V2, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+.The negative electrode of the negative electrode of diode V1 and diode V2 is connected with coil electrode pad C+ simultaneously, and the anode of diode V2 is connected with coil negative terminal pad C-, and the anode of diode V1 meets positive source pad V+.Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two.As Fig. 1 a) and Fig. 1 a ') be discrete component; As Fig. 2 a) and Fig. 2 a ') be bare chip.
The second, described coil transient state suppresses protective circuit and comprises diode V1, V3, voltage-stabiliser tube V3, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+.The anode of the negative electrode of diode V1 and voltage-stabiliser tube V2 is connecting coil positive terminal pad C+ simultaneously, and the negative electrode of the negative electrode of voltage-stabiliser tube V2 and diode V3 is connecting coil negative terminal pad C-simultaneously, and the anode of diode V1 meets positive source pad V+.Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two.As Fig. 1 b) and Fig. 1 b ') be discrete component; As Fig. 2 b) and Fig. 2 b ') be bare chip.
The third, described coil transient state suppresses protective circuit and comprises voltage-stabiliser tube V1, diode V2, coil electrode pad C+ and coil negative terminal pad C-.The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of diode V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of diode V2.As Fig. 1 c) and Fig. 1 c ') be discrete component; As Fig. 2 c) and Fig. 2 c ') be bare chip.
The 4th kind, described coil transient state suppresses protective circuit and comprises voltage-stabiliser tube V1, voltage-stabiliser tube V2, coil electrode pad C+ and coil negative terminal pad C-.The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of voltage-stabiliser tube V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of voltage-stabiliser tube V2.As Fig. 1 d) and Fig. 1 d ') be discrete component; As Fig. 2 d) and Fig. 2 d ') be bare chip.
The 5th kind, described coil transient state suppresses protective circuit and comprises transient state killer tube V1, coil electrode pad C+ and coil negative terminal pad C-.The anodic bonding coil negative terminal pad C-of transient state killer tube V1, the negative electrode connecting coil positive terminal pad C+ of transient state killer tube V1.As Fig. 1 e) and Fig. 1 e ') be discrete component; As Fig. 2 e) and Fig. 2 e ') be bare chip.
In the time that coil transient state suppresses the components and parts of protective circuit inside and is discrete component, as Fig. 1 a)-e) and Fig. 1 a ')-e ') as shown in, between components and parts and components and parts, and realize electrical connection by covering copper layer between components and parts and pad.In the time that the components and parts of coil transient state inhibition protective circuit inside are bare chip; as Fig. 2 a)-e) and Fig. 2 a ')-e ') as shown in; between components and parts and components and parts, and realize electrical connection by covering copper layer or bonding wire between components and parts and pad.
3. coil transient state being suppressed to protection module is fixed on base plate.
In the present invention, described coil transient state inhibition protection module and relay coil are positioned at phase the same side of base.In the present invention, described coil transient state suppresses protection module can be as shown in Figure 3 a)-e) be directly fixed on base plate plane, and Fig. 3 is the structure side view while suppressing protective circuit and base employing Plane Installation for coil transient state f).Also can as Fig. 4 a)-be fixed in the module slot of offering on base plate as shown in e), Fig. 4 is the structure side view when suppressing protective circuit and adopt grooved installation with base for coil transient state f).Coil transient state suppresses protection module and can be fixed on base plate by modes such as bonding and common welding; but consider that Reflow Soldering can improve the functional reliability of circuit; therefore the present invention adopts Reflow Soldering mode that coil transient state inhibition protection module is fixed on base plate; first a soldering sheet is placed on to a side of base; then coil transient state is suppressed to protection module and be placed on soldering sheet, finally the base that stacks soldering sheet and coil transient state inhibition protection module is put into refluxing welder coil transient state inhibition protection module is fixed on base.
4. coil electrode pad C+ and the positive source pad V+ of coil transient state inhibition protection module are connected on coil electrode leading-off rods by spot welding or bonding wire.Coil negative terminal pad C-and power cathode pad V-that coil transient state suppresses protection module are connected on coil negative pole leading-off rods by spot welding or bonding wire.
5. relay coil is arranged on to a wherein side of base.
6. coil electrode leading-off rods and coil negative pole leading-off rods are electrically connected with one end of relay coil respectively.
The electromagnetic relay with coil transient state inhibition protective circuit that adopts said method to produce, it mainly suppresses protective circuit, base, relay coil, coil electrode leading-off rods and coil negative pole leading-off rods by coil transient state and forms.Relay coil is arranged on a wherein side of base.Coil electrode leading-off rods and coil negative pole leading-off rods all run through to be located on base, and one end of coil electrode leading-off rods and coil negative pole leading-off rods is positioned at a side of base, and the other end is the opposite side of base.Coil electrode leading-off rods and coil negative pole leading-off rods are electrically connected with one end of relay coil respectively.The connected mode of coil electrode leading-off rods and coil negative pole leading-off rods and base adopts existing connected mode, coil electrode leading-off rods and coil negative pole leading-off rods and relay coil connected mode adopt existing connected mode.
In the present invention, it is the one in following 5 kinds of combinations that described coil transient state suppresses protective circuit, that is:
The first, described coil transient state suppresses protective circuit and comprises diode V1, V2, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+.The negative electrode of the negative electrode of diode V1 and diode V2 is connected with coil electrode pad C+ simultaneously, and the anode of diode V2 is connected with coil negative terminal pad C-, and the anode of diode V1 meets positive source pad V+.Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two.As Fig. 1 a) and Fig. 1 a ') be discrete component; As Fig. 2 a) and Fig. 2 a ') be bare chip.
The second, described coil transient state suppresses protective circuit and comprises diode V1, V3, voltage-stabiliser tube V3, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+.The anode of the negative electrode of diode V1 and voltage-stabiliser tube V2 is connecting coil positive terminal pad C+ simultaneously, and the negative electrode of the negative electrode of voltage-stabiliser tube V2 and diode V3 is connecting coil negative terminal pad C-simultaneously, and the anode of diode V1 meets positive source pad V+.Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two.As Fig. 1 b) and Fig. 1 b ') be discrete component; As Fig. 2 b) and Fig. 2 b ') be bare chip.
The third, described coil transient state suppresses protective circuit and comprises voltage-stabiliser tube V1, diode V2, coil electrode pad C+ and coil negative terminal pad C-.The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of diode V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of diode V2.As Fig. 1 c) and Fig. 1 c ') be discrete component; As Fig. 2 c) and Fig. 2 c ') be bare chip.
The 4th kind, described coil transient state suppresses protective circuit and comprises voltage-stabiliser tube V1, voltage-stabiliser tube V2, coil electrode pad C+ and coil negative terminal pad C-.The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of voltage-stabiliser tube V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of voltage-stabiliser tube V2.As Fig. 1 d) and Fig. 1 d ') be discrete component; As Fig. 2 d) and Fig. 2 d ') be bare chip.
The 5th kind, described coil transient state suppresses protective circuit and comprises transient state killer tube V1, coil electrode pad C+ and coil negative terminal pad C-.The anodic bonding coil negative terminal pad C-of transient state killer tube V1, the negative electrode connecting coil positive terminal pad C+ of transient state killer tube V1.As Fig. 1 e) and Fig. 1 e ') be discrete component; As Fig. 2 e) and Fig. 2 e ') be bare chip.
Above-mentioned coil transient state suppresses protective circuit and is arranged on ceramic substrate, forms coil transient state and suppresses protection module.In the time that coil transient state suppresses the components and parts of protective circuit inside and is discrete component, as Fig. 1 a)-e) and Fig. 1 a ')-e ') as shown in, between components and parts and components and parts, and be connected by covering copper layer between components and parts and pad.In the time that coil transient state suppresses the components and parts of protective circuit inside and is bare chip, as Fig. 2 a)-e) and Fig. 2 a ')-e ') as shown in, between components and parts and components and parts, and be connected by covering copper layer or bonding wire between components and parts and pad.
Above-mentioned coil transient state suppresses protection module and is fixed on base plate.In the present invention, described coil transient state inhibition protection module and relay coil are positioned at phase the same side of base.Described coil transient state suppresses protection module can be as shown in Figure 3 a)-e) be directly fixed on base plate plane, and Fig. 3 is the structure side view while suppressing protective circuit and base employing Plane Installation for coil transient state f).Also can as Fig. 4 a)-be fixed in the module slot of offering on base plate as shown in e), Fig. 4 is the structure side view when suppressing protective circuit and adopt grooved installation with base for coil transient state f).Coil transient state suppresses protection module and can be fixed on base plate by modes such as bonding and common welding; but consider that Reflow Soldering can improve the functional reliability of circuit, therefore the present invention adopts Reflow Soldering mode that coil transient state inhibition protection module is fixed on base plate.Coil electrode pad C+ and positive source pad V+ that coil transient state suppresses protection module are connected on coil electrode leading-off rods by spot welding or bonding wire.Coil negative terminal pad C-and power cathode pad V-that coil transient state suppresses protection module are connected on coil negative pole leading-off rods by spot welding or bonding wire.
Claims (10)
1. suppress the electromagnetic relay of protective circuit with coil transient state, it mainly suppresses protective circuit, base, relay coil, coil electrode leading-off rods and coil negative pole leading-off rods by coil transient state and forms; Relay coil is arranged on a wherein side of base; Coil electrode leading-off rods and coil negative pole leading-off rods all run through to be located on base, and one end of coil electrode leading-off rods and coil negative pole leading-off rods is positioned at a side of base, and the other end is the opposite side of base; Coil electrode leading-off rods and coil negative pole leading-off rods are electrically connected with one end of relay coil respectively; It is characterized in that: described coil transient state suppresses protective circuit and is arranged on ceramic substrate, form coil transient state and suppress protection module; Above-mentioned coil transient state suppresses protection module and is fixed on base plate; Coil electrode pad C+ and positive source pad V+ that coil transient state suppresses protection module are connected on coil electrode leading-off rods by spot welding or bonding wire; Coil negative terminal pad C-and power cathode pad V-that coil transient state suppresses protection module are connected on coil negative pole leading-off rods by spot welding or bonding wire.
2. the electromagnetic relay that suppresses according to claim 1 protective circuit with coil transient state, is characterized in that: described coil transient state suppresses protection module and is directly fixed on base plate plane, or is fixed in the module slot of offering on base plate.
3. according to the electromagnetic relay that suppresses protective circuit described in claim 1 or 2 with coil transient state, it is characterized in that: described coil transient state suppresses protection module and is fixed on base plate by Reflow Soldering.
4. the electromagnetic relay that suppresses according to claim 1 protective circuit with coil transient state, is characterized in that:
Described coil transient state suppresses protective circuit and comprises diode V1, V2, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The negative electrode of the negative electrode of diode V1 and diode V2 is connected with coil electrode pad C+ simultaneously, and the anode of diode V2 is connected with coil negative terminal pad C-, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises diode V1, V3, voltage-stabiliser tube V3, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The anode of the negative electrode of diode V1 and voltage-stabiliser tube V2 is connecting coil positive terminal pad C+ simultaneously, and the negative electrode of the negative electrode of voltage-stabiliser tube V2 and diode V3 is connecting coil negative terminal pad C-simultaneously, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, diode V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of diode V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of diode V2;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, voltage-stabiliser tube V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of voltage-stabiliser tube V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of voltage-stabiliser tube V2;
Or described coil transient state inhibition protective circuit comprises transient state killer tube V1, coil electrode pad C+ and coil negative terminal pad C-; The anodic bonding coil negative terminal pad C-of transient state killer tube V1, the negative electrode connecting coil positive terminal pad C+ of transient state killer tube V1.
5. the electromagnetic relay that suppresses according to claim 4 protective circuit with coil transient state, is characterized in that: the components and parts that described coil transient state suppresses protective circuit inside are discrete component or bare chip;
In the time that the components and parts of coil transient state inhibition protective circuit inside are discrete component, between components and parts and components and parts, and be connected by covering copper layer between components and parts and pad;
In the time that the components and parts of coil transient state inhibition protective circuit inside are bare chip, between components and parts and components and parts, and be connected by covering copper layer or bonding wire between components and parts and pad.
6. the electromagnetic relay that suppresses according to claim 1 protective circuit with coil transient state, is characterized in that: described coil transient state inhibition protection module and relay coil are positioned at phase the same side of base.
7. the installation method that suppresses the electromagnetic relay of protective circuit with coil transient state, is characterized in that comprising the steps:
1. coil electrode leading-off rods and coil negative pole leading-off rods are all run through and be located on base, one end of coil electrode leading-off rods and coil negative pole leading-off rods is positioned at a side of base, and the other end is the opposite side of base;
2. coil transient state is suppressed to protective circuit and be arranged on ceramic substrate, form coil transient state and suppress protection module;
3. coil transient state being suppressed to protection module is fixed on base plate;
4. the coil electrode pad C+ and the positive source pad V+ that coil transient state are suppressed to protection module are connected on coil electrode leading-off rods by spot welding or bonding wire; Coil negative terminal pad C-and power cathode pad V-that coil transient state suppresses protection module are connected on coil negative pole leading-off rods by spot welding or bonding wire.
5. relay coil is arranged on to a wherein side of base;
6. coil electrode leading-off rods and coil negative pole leading-off rods are electrically connected with one end of relay coil respectively.
8. the installation method that suppresses according to claim 7 the electromagnetic relay of protective circuit with coil transient state, is characterized in that: described coil transient state suppresses protection module and is directly fixed on base plate plane, or is fixed in the module slot of offering on base plate.
9. according to the installation method that suppresses the electromagnetic relay of protective circuit described in claim 7 or 8 with coil transient state, it is characterized in that: described coil transient state suppresses protection module and is fixed on base plate by Reflow Soldering.
10. the installation method that suppresses according to claim 7 the electromagnetic relay of protective circuit with coil transient state, is characterized in that:
Described coil transient state suppresses protective circuit and comprises diode V1, V2, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The negative electrode of the negative electrode of diode V1 and diode V2 is connected with coil electrode pad C+ simultaneously, and the anode of diode V2 is connected with coil negative terminal pad C-, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises diode V1, V3, voltage-stabiliser tube V3, coil electrode pad C+, coil negative terminal pad C-and positive source pad V+; The anode of the negative electrode of diode V1 and voltage-stabiliser tube V2 is connecting coil positive terminal pad C+ simultaneously, and the negative electrode of the negative electrode of voltage-stabiliser tube V2 and diode V3 is connecting coil negative terminal pad C-simultaneously, and the anode of diode V1 meets positive source pad V+; Coil electrode pad C+ and the separate setting of positive source pad V+, but link together by welding or connecting line between the two;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, diode V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of diode V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of diode V2;
Or described coil transient state inhibition protective circuit comprises voltage-stabiliser tube V1, voltage-stabiliser tube V2, coil electrode pad C+ and coil negative terminal pad C-; The negative electrode of voltage-stabiliser tube V1 is connected with the negative electrode of voltage-stabiliser tube V2, the anodic bonding coil negative terminal pad C-of voltage-stabiliser tube V1, the anodic bonding coil electrode pad C+ of voltage-stabiliser tube V2;
Or described coil transient state inhibition protective circuit comprises transient state killer tube V1, coil electrode pad C+ and coil negative terminal pad C-; The anodic bonding coil negative terminal pad C-of transient state killer tube V1, the negative electrode connecting coil positive terminal pad C+ of transient state killer tube V1.
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|---|---|---|---|
| CN201410230356.4A CN104021991B (en) | 2014-05-28 | 2014-05-28 | Electromagnetic relay and the installation method thereof of protective circuit is suppressed with coil transient state |
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|---|---|---|---|
| CN201410230356.4A CN104021991B (en) | 2014-05-28 | 2014-05-28 | Electromagnetic relay and the installation method thereof of protective circuit is suppressed with coil transient state |
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| CN104021991A true CN104021991A (en) | 2014-09-03 |
| CN104021991B CN104021991B (en) | 2016-01-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100319967B1 (en) * | 1999-09-28 | 2002-01-10 | 김낙현 | Connection methods of coil for thin sheet buzzer using spot welding |
| US20090323245A1 (en) * | 2005-04-27 | 2009-12-31 | Abb Technology Ltd. | Device for Reduction of Voltage Derivative |
| CN102856122A (en) * | 2012-09-14 | 2013-01-02 | 贵州振华群英电器有限公司 | High sensitivity square TO-5 sealed electromagnetic relay |
| CN203882893U (en) * | 2014-05-28 | 2014-10-15 | 桂林航天电子有限公司 | Electromagnetic relay with coil transient suppression protection circuit |
-
2014
- 2014-05-28 CN CN201410230356.4A patent/CN104021991B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100319967B1 (en) * | 1999-09-28 | 2002-01-10 | 김낙현 | Connection methods of coil for thin sheet buzzer using spot welding |
| US20090323245A1 (en) * | 2005-04-27 | 2009-12-31 | Abb Technology Ltd. | Device for Reduction of Voltage Derivative |
| CN102856122A (en) * | 2012-09-14 | 2013-01-02 | 贵州振华群英电器有限公司 | High sensitivity square TO-5 sealed electromagnetic relay |
| CN203882893U (en) * | 2014-05-28 | 2014-10-15 | 桂林航天电子有限公司 | Electromagnetic relay with coil transient suppression protection circuit |
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| CN104021991B (en) | 2016-01-20 |
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