CN205581219U - A equipment for detecting PTC heater - Google Patents

Abstract

The utility model discloses an equipment for detecting PTC heater and detection method, equipment includes: hydraulic press, anchor clamps, first driving piece, cold water machine and automatically controlled cabinet. The hydraulic press has a workstation, and anchor clamps are including anchor clamps and last anchor clamps down, and lower anchor clamps are established on the workstation of hydraulic press and anchor clamps and hydraulic press relatively fixed down, go up anchor clamps movably establishing on the hydraulic press between clamping position and released position, goes up anchor clamps and injects with anchor clamps lock down at clamping position and to hold the chamber, goes up and is equipped with probe and temperature detecting element on the anchor clamps, and the probe is suitable for that be located clamping position and the PTC heater is electric is connected at last anchor clamps, first driving piece is established and is linked to each other on the hydraulic press and with last anchor clamps, the cold water machine links to each other with anchor clamps for when last anchor clamps are located clamping position with hold the chamber and establish ties in order to lead to water, automatically controlled cabinet links to each other with hydraulic press, probe and temperature detecting element respectively. According to the utility model discloses an equipment for detecting PTC heater can improve detection efficiency.

Description

For detecting PTC The equipment of heater

Technical field

This utility model relates to Electrical Testing technical field, particularly relates to a kind of equipment for detecting ptc heater.

Background technology

Coming with some shortcomings in the detection scheme of correlation technique: one, wherein, PTC is the abbreviation of Positive Temperature Coefficient to PTC(, and Chinese is positive temperature coefficient) heater needs artificial clamping and dismounting, wastes time and energy, relatively costly；Its two, operator directly operate high voltage power supply, relatively hazardous.If operator forget logical coolant during test, after directly leading to high-tension electricity, or end, first close coolant broken height piezoelectricity again, then can cause dry combustion method, plastic casing can be burnt out, even can cause fire；Its three, peak point current appearance in about 2 seconds the most after powered up, quickly, naked eyes are difficult to accurately obtain in change；Its four, the temperature of coolant is wayward.

Utility model content

One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.To this end, this utility model is that first aspect proposes a kind of equipment for detecting ptc heater, the described equipment for detecting ptc heater can save detection time and easy to operate.

According to this utility model embodiment for detecting the equipment of ptc heater, including: hydraulic press, described hydraulic press has workbench；Fixture, described fixture includes lower clamp and upper fixture, described lower clamp is located on the workbench of described hydraulic press and described lower clamp is relatively fixed with described hydraulic press, described upper fixture is movably arranged on described hydraulic press between clip position and released position, described upper fixture fastens at described clip position and described lower clamp and limits receiving chamber, ptc heater can be placed in this receiving intracavity, described upper fixture separates with described lower clamp in described released position and is positioned at above described lower clamp, described upper fixture is provided with probe and for detecting the detector unit of described receiving cavity temperature, described probe is suitable to fixture on described and is positioned at described clip position and electrically connects with described ptc heater；First actuator, described first actuator is located on described hydraulic press, and described first actuator is connected with described upper fixture to drive described upper fixture to move up and down；Cooling-water machine, described cooling-water machine is connected with described fixture, connects with described receiving chamber with water flowing when on described, fixture is positioned at described clip position；Electrical control cubicles, described electrical control cubicles is connected with described hydraulic press, described probe and described detector unit respectively；The bottom of described lower clamp is provided with knock-pin and the second actuator, and described knock-pin is vertically extending and can protrude upward the diapire of described lower clamp, and described second actuator is connected with described knock-pin for driving described knock-pin to move up and down.According to the equipment for detecting ptc heater of this utility model embodiment, upper fixture can be controlled by the first actuator and lower clamp moves between clip position and released position；When upper fixture is positioned at clip position, probe can electrically connect with ptc heater, thus, it is possible to detect ptc heater more easily and can save the detection time.

It addition, according to the technical characteristic added as follows for detecting the equipment of ptc heater to have of this utility model above-described embodiment:

According to an embodiment of the present utility model, described lower clamp is the cassette shapes of opening upwards, and described upper fixture is the cassette shapes that Open Side Down, and described upper fixture is tightly connected with described lower clamp at described clip position.

Further, being provided with horizontally disposed probe mounting seat in described upper fixture, the week of described probe mounting seat is tightly connected along the inner peripheral surface with described upper fixture, and described probe and described detector unit are located in described probe mounting seat.

According to embodiments more of the present utility model, the first pressure transmitter and second pressure transmitter of described lower clamp it is communicated with on described lower clamp, being connected with described first pressure transmitter for water end (W.E.) of described cooling-water machine, and the backwater end of described cooling-water machine is connected with described second pressure transmitter.

According to embodiments more of the present utility model, described hydraulic press is provided with liquid return trough, and described liquid return trough is located at the lower section of described workbench, and position corresponding with workbench, the bottom of described lower clamp is respectively provided with the first water hole connected with described liquid return trough.

Further, described workbench being formed with collecting tank, the lower end of described lower clamp is located in described collecting tank, and the bottom of described collecting tank is equipped with the second water hole connected with described liquid return trough with corresponding positions on workbench.

According to an embodiment of the present utility model, described hydraulic press is provided with temperature controller and ammeter, and described temperature controller is between described electrical control cubicles and described detector unit, and described ammeter is connected between described electrical control cubicles and described probe.

According to an embodiment of the present utility model, described first actuator is hydraulic-driven part, and described hydraulic press is provided with the oil gauge of the oil liquid pressure in detecting described first actuator.

According to an embodiment of the present utility model, described upper fixture connects and has vertically extending guide post, described guide post to fix relative to position with described upper fixture, and described guide post is vertically slidably disposed on described hydraulic press.

According to an embodiment of the present utility model, described fixture includes spaced apart multiple.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the equipment for detecting ptc heater of this utility model embodiment.

Fig. 2 is the sectional view of hydraulic press in the equipment detect ptc heater of this utility model embodiment.

Fig. 3 is a partial cutaway figure of hydraulic press in the equipment detect ptc heater of this utility model embodiment.

Fig. 4 is the partial enlarged drawing in Fig. 3 at A.

Fig. 5 is the upward view of Fig. 4.

Fig. 6 is the partial enlarged drawing in Fig. 3 at B.

Reference:

nullFor detecting the equipment 100 of ptc heater，Hydraulic press 110，Workbench 111，First actuator 112，Liquid return trough 113，First water hole 114，Collecting tank 115，Second water hole 116，Temperature controller 117，Ammeter 118，Oil gauge 119，Fixture 120，Upper fixture 121，Lower clamp 122，Probe 124，Detector unit 125，Probe mounting seat 126，First pressure transmitter 127，Second pressure transmitter 123，Knock-pin 128，Second actuator 129，Guide post 101，Keyset 102，Ptc heater 103，Check valve 104，Choke valve 105，High voltage power supply 106，Detector unit mounting seat 108，Sealing member 109，Cooling-water machine 130，The confession water end (W.E.) 131 of cooling-water machine，The backwater end 132 of cooling-water machine，Electrical control cubicles 140，Joint 107，Hole 151, location，Installing hole 152，Spacing collar 153.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.

Describing the equipment 100 for detecting ptc heater according to this utility model embodiment in detail below in conjunction with Fig. 1 to Fig. 6, wherein, PTC is the abbreviation of Positive Temperature Coefficient, and Chinese is positive temperature coefficient.

In conjunction with Fig. 1 to Fig. 6, according to the equipment 100 for detecting ptc heater of this utility model embodiment, hydraulic press 110, fixture the 120, first actuator 112, cooling-water machine 130 and electrical control cubicles 140 can be included.

Specifically, as it is shown on figure 3, workbench 111 can be provided with on hydraulic press 110, wherein, workbench 111 can be located at the middle part of hydraulic press 110 oriented manipulation personnel side, workbench 111 can be spaced and be disposed with multiple start button, and the centre of multiple start buttons can be provided with scram button.Thus, it is easy to control the corresponding actions of hydraulic press 110, it is advantageously ensured that the safety of operator, improve the safety of operation.

Wherein, the effect of hydraulic press 110 is to drive upper fixture 121 to move, and provides stable pressure at clip position upwards fixture 121.Specifically, hydraulic press 100 is provided with the first actuator 112, and the first actuator 112 drives upper fixture 121 to move.

nullWith reference to Fig. 2 to Fig. 4，Fixture 120 can include lower clamp 122 and upper fixture 121(such as，In the above-below direction shown in Fig. 2，Upper fixture 121 and lower clamp 122 are along being sequentially arranged from top to bottom)，Lower clamp 122 can be located on the workbench 111 of hydraulic press 110 and lower clamp 122 can be relatively fixed with hydraulic press 110，Upper fixture 121 is movably arranged on hydraulic press 110 between clip position and released position，Upper fixture 121 fastens at clip position and lower clamp 122 can limit receiving chamber，Ptc heater 103 to be tested can be placed in this receiving intracavity，Upper fixture 121 above released position separates and may be located at lower clamp 122 with lower clamp 122 (such as，The top of lower clamp 122 in Fig. 2)，Probe 124 and detector unit 125 can be provided with on upper fixture 121，Wherein，Detector unit 125 can be located in detector unit mounting seat 108 (with reference to Fig. 4)，Detector unit 125 may be used for detection and accommodates the temperature of intracavity，Probe 124 is suitable to electrically connect with ptc heater 103 when upper fixture 121 is positioned at clip position，Thus，The further transmission of signal can be realized.

As shown in Figures 2 and 3, the first actuator 112 can be located on hydraulic press 110, and the first actuator 112 can be connected with upper fixture 121 to drive upper fixture 121 to move up and down, and so can better control over the break-make that probe 124 electrically connects with ptc heater 103.

With reference to Fig. 1, cooling-water machine 130 can with fixture 120(wherein, and fixture 120 includes fixture 121 and lower clamp 122) it is connected, cooling-water machine 130 may be used for connecting with water flowing with receiving chamber when upper fixture 121 is positioned at clip position.

Preferably, in the example of fig. 1, choke valve 105 can be serially connected with between confession water end (W.E.) 131 and the fixture 120 of cooling-water machine 130, check valve 104 can be serially connected with between backwater end 132 and the fixture 120 of cooling-water machine 130, wherein, check valve 104 may be used for controlling current from fixture 120 to cooling-water machine 130 one-way flow, thus, it is possible to better control over the flow entering hydraulic press 110 liquid that is interior and that discharge in hydraulic press 110.

As shown in Figure 1 and Figure 4, electrical control cubicles 140 can be connected with hydraulic press 110, probe 124 and detector unit 125 respectively.

It addition, can be provided with control unit in electrical control cubicles 140, electrical control cubicles 140 is connected with high voltage power supply 106, thus, can be the source that electrical control cubicles 140 provides electric energy by high voltage power supply 106.

According to the equipment 100 for detecting ptc heater of this utility model embodiment, upper fixture 121 can be controlled by the first actuator 112 and lower clamp 122 moves between clip position and released position；When upper fixture 121 is positioned at clip position, probe 124 can electrically connect with ptc heater 103, thus, it is possible to detect ptc heater 103 more easily and can save the detection time.

Furthermore it is possible to automatically detected ptc heater 103 by this equipment 100, so can improve Detection results and the accuracy of detection of ptc heater 103, but also can reduce or avoid potential safety hazard.

The equipment 100 being used for detecting ptc heater according to this utility model embodiment can be applied in many technical fields, equipment 100 for detection ptc heater is applied and is illustrated as a example by electric automobiles below, but this can not be interpreted as restriction of the present utility model.

With reference to Fig. 4 to Fig. 6 and combine Fig. 2 and Fig. 3, lower clamp 122 can cassette shapes in opening upwards, upper fixture 121 can be the cassette shapes that Open Side Down, upper fixture 121 can be tightly connected with lower clamp 122 at clip position, that is, when upper fixture 121 is positioned at clip position, what upper fixture 121 and lower clamp 122 limited accommodates chamber is the cavity sealed.Thus, it is possible to improve the sealing property of fixture 120, such that it is able to liquid leakage contribution testing result or damage electric elements during avoiding detection, and then the security performance of equipment 100 can be improved.

It should be noted that describing of the above-mentioned shape to upper fixture 121 and lower clamp 122 is simply the most exemplary, it is impossible to be interpreted as restriction of the present utility model, the concrete shape of upper fixture 121 and lower clamp 122 can accommodation as required.

Further, as shown in Figure 4 and Figure 5, can be provided with horizontally disposed probe mounting seat 126 in upper fixture 121, the week of probe mounting seat 126, probe 124 and detector unit 125 can be located in probe mounting seat 126 along being tightly connected with the inner peripheral surface of upper fixture 121.Thus so that probe 124 and detector unit 125 reliably can position in probe mounting seat 126, such that it is able to guarantee the accuracy of detection.

With reference to Fig. 6 and combine Fig. 3, the first pressure transmitter 127 and the second pressure transmitter 123 of lower clamp 122 can be communicated with on lower clamp 122, can being connected with the first pressure transmitter 127 for water end (W.E.) 131 of cooling-water machine 130, and the backwater end 132 of cooling-water machine 130 can be connected with the second pressure transmitter 123.Thus, it is possible to make the current from flowing out for water end (W.E.) 131 can keep constant in the effect downforce of the first pressure transmitter 127 and the second pressure transmitter 123.

Wherein, pressure transmitter (including the first pressure transmitter 127 and the second pressure transmitter 123, lower same) refers to be output as the pressure transducer of standard signal, is that a kind of pressure variations that accepts is converted to the instrument of standard output signals in proportion.The physical pressure parameters such as gas that load cell can be experienced by it, liquid are transformed into the signal of telecommunication of standard, measure, indicate and procedure regulation supplying the secondary meters such as indicator alarm, monitor, actuator.The Main Function of pressure transmitter is that pressure signal is passed to electronic equipment, and then shows pressure on computer display.

Therefore, use pressure transmitter can improve the security performance of equipment 100, and can be determined that and whether pipeline has coolant reveal.

Furthermore it is also possible to arrange water level detecting element, pressure detecting element etc. on fixture 120 to detect water level or the pressure accommodating intracavity, such that it is able to improve the safety of equipment 100, and improve the precision of testing result.

As shown in Fig. 1 to Fig. 3 and Fig. 6, liquid return trough 113 can be provided with on hydraulic press 110, liquid return trough 113 can be located at the lower section of workbench 111 (such as, the lower section of workbench 111 in Fig. 3), and position corresponding with workbench 111, the bottom of lower clamp 122 be respectively provided with the first water hole 114(connected with liquid return trough 113 with reference to Fig. 2).Wherein, liquid return trough 113 may be used for reclaiming coolant, joint 107(can be provided with reference to Fig. 6) between first water hole 114 and lower clamp 122, thus, unnecessary coolant can liquid return trough 113 from hydraulic press 110 in such as check valve 104 flows back to cooling-water machine 130 through tapping valve, such that it is able to realize the recycling of coolant, described tapping valve is arranged on joint 107.

It addition, it will be appreciated by persons skilled in the art that the first water hole 114 can connect and has switch valve, by control switch valve and disconnect or connect can control the first water hole 114 and liquid return trough 113 further connect situation.

Additionally, tapping valve may be used for power-off after ptc heater 103 has been tested, closing switch valve, before upper fixture 121 rises, part coolant in lower clamp 122 of first draining, during in order to avoid upper fixture 121 rises, the coolant in lower clamp 122 is overflowed.Switch valve can be after upper fixture 121 and lower clamp 122 be in clip position, and logical coolant is initially powered up when the flow in pipeline reaches set point.

It should be noted that the temperature of coolant can control in the range of 24 DEG C to 26 DEG C in cooling-water machine 130.

Further, as shown in Figures 2 and 3, collecting tank 115 is could be formed with on workbench 111, the lower end of lower clamp 122 is (such as, the lower end of lower clamp 122 in Fig. 3) can be located in collecting tank 115, on the bottom of collecting tank 115 and workbench 111, relevant position could be formed with the second water hole 116(with reference to Fig. 2), the second water hole 116 can connect with collecting tank 115 and liquid return trough 113 respectively.During equipment 100 uses, have water unavoidably overflow or be splashed on workbench 111, spilling can be collected by arranging collecting tank 115 or be splashed to the water on workbench 111, and the water collected is discharged in liquid return trough 113, such that it is able to avoid the electric elements on water erosion or damage equipment 100, improve the safety and stability of equipment 100.

It addition, arranging of collecting tank 115 can also realize recycling of coolant, save the energy.

With reference to Fig. 6 and combine Fig. 2 and Fig. 3, the bottom of lower clamp 122 can be provided with knock-pin 128 and the second actuator 129, knock-pin 128 can be vertically extending, knock-pin 128 can protrude upward the roof of lower clamp 122, after ptc heater 103 has detected, can upwards eject ptc heater 103 by knock-pin 128 and take out ptc heater 103 to facilitate, the second actuator 129 may be used for driving knock-pin 128 (such as, the above-below direction in Fig. 2 or Fig. 3) along the vertical direction mobile.

Wherein, when the second actuator 129 drives knock-pin 128 to move up, can be by ptc heater 103(with reference to Fig. 3) eject；When second actuator 129 drives knock-pin 128 to move down, knock-pin 128 can be made to reset, complete to detect the process of ptc heater 103.

It addition, be also provided with sealing member 109, thus, it is possible to better ensure that sealing in the junction of knock-pin 128 with lower clamp 122.

As it is shown on figure 3, can be provided with temperature controller 117 and ammeter 118 on hydraulic press 110, temperature controller 117 can be located between electrical control cubicles 140 and detector unit 125, and ammeter 118 can be connected between electrical control cubicles 140 and probe 124.

Alternatively, detector unit 125 can be such as thermocouple etc., and detector unit 125 can be connected with temperature controller 117 and by Temperature Feedback to temperature controller 117；Ammeter 118 can be connected between electrical control cubicles 140 and probe 124 for gathering peak point current and the peak point current collected being fed back to electrical control cubicles 140.Thus, it is possible to ensure the accuracy of the peak point current obtained.

Specifically, the first actuator 112 can be hydraulic-driven part, and hydraulic press 110 can be provided with oil gauge 119, and oil gauge 119 may be used for detecting the oil liquid pressure in the first actuator 112.When the pressure on oil gauge 119 reaches preset value, probe 124 can contact with the electrode tip of ptc heater 103.Thus, it is easy to monitor the situation of change of oil liquid pressure in the first actuator 112, such that it is able to guarantee the properly functioning of equipment 100, it is ensured that the accuracy of detection.When the pressure of oil gauge 110 reaches preset value, can illustrate that being passed through coolant in the receiving chamber that the most upwards fixture 121 and lower clamp 122 fastening are formed also will not overflow, and probe 124 contact with electrode tip more preferable, in order to avoid high-tension electricity through probe 124 arrive electrode tip occur arcing.

Certainly, the first actuator 112 can also be other driving element, and the form of the first actuator 112 is not especially limited by this utility model, can select by adaptability as required in actual application.

With reference to Fig. 2 to Fig. 4, can connect on upper fixture 121 and have along the vertical direction (such as, above-below direction shown in Fig. 2 or Fig. 3) guide post 101 that extends, guide post 101 can be fixed with the relative position of upper fixture 121, and guide post 101 is vertically slidably disposed on hydraulic press 110.Thus, it is possible to make fixture 121 relatively smooth to move up and down.

Vertically extending multiple guide posts 101 are had it addition, can connect on upper fixture 121.Such as, in the example of fig. 3, two guide posts 101 can be spaced the both sides being arranged in the first actuator 112, thus, it is possible to force balance so that the action of upper fixture 121 is more steady.

Additionally, with reference to Fig. 4, upper fixture 121 can include horizontally disposed keyset 102, and keyset 102 can be tightly connected with upper fixture 121.It is also provided with on keyset 102 positioning hole 151 and installing hole 152, guide post 101 can be connected with keyset 102 by hole 151, location, being also provided with spacing collar 153 in the junction of guide post 101 with keyset 102, spacing collar 153 is so that guide post 101 can more reliablely and stablely be connected with keyset 102；First actuator 112 can be connected with keyset 102, thus by installing hole 152 so that keyset 102 can synchronize and stably move up and down with upper fixture 121, such that it is able to ensure the accuracy of testing result to a certain extent.

Further, as shown in Figures 2 and 3, fixture 120 can include spaced apart multiple.Thus, it is possible to detect multiple ptc heater 103 simultaneously, such that it is able to be effectively improved detection efficiency, shorten the detection time.

As shown in Figures 1 to 6, according to the equipment 100 for ptc heater of this utility model embodiment, cooling-water machine 130, hydraulic press 110, fixture 120, electrical control cubicles 140 and high voltage power supply 106 are mainly included.Wherein, high voltage power supply 106, cooling-water machine 130 and hydraulic press 110 all can be controlled by electrical control cubicles 140.

The equipment 100 being used for detecting ptc heater according to this utility model embodiment can use such as rustless steel etc. to be processed, after ptc heater 103 is put in mould by operator, only needing a key operation (by start button), subsequent operation can be automatically performed by equipment 100.Equipment 100 can automatically obtain data and judge, and can test multiple ptc heater 103 simultaneously.

Wherein, equipment 100 selects rustless steel to make the safety that can improve operation to a certain extent.It is of course also possible to be that other ensure that the material of processing safety.

According to this utility model embodiment for detecting the more preferable effect that the equipment 100 of ptc heater can obtain: peak point current can be obtained more accurately and automatically calculate power；Flow and the temperature of coolant can be monitored in real time, prevent dry combustion method；Can be automatically logged in data base, it is not necessary to be manually entered, the follow-up batch that can carry out is reviewed；The temperature variations accommodated in chamber can be tested out；Manually opened without operator or close high voltage power supply, it is possible to achieve automatically control, unexpected generation can be avoided；Mould is hardly damaged.

The method of the detection ptc heater according to this utility model second aspect embodiment, including:

Moving down fixture to after clip position, limit receiving chamber between upper fixture and lower clamp, cooling-water machine is to accommodating intracavity water filling.After water filling completes, ptc heater is energized and persistently records electrical current and detection water temperature, if electrical current and water temperature reach preset range, ptc heater power-off.

Detection water temperature also judges whether water filling completes, and water filling detects water temperature and flow after completing, and as reached preset range, leads to high-tension electricity to ptc heater, records electrical current, water temperature and flow, ptc heater power-off after completing test period.

Wherein, the preset range of water temperature can control in the range of 24 DEG C to 26 DEG C, but is not limited to this.

Further, at cooling-water machine after accommodating intracavity water flowing, detection accommodates flow of inlet water and the inflow temperature in chamber, if flow of inlet water and inflow temperature all reach preset range, ptc heater is energized, at cooling-water machine after accommodating intracavity water flowing, if accommodated within second scheduled time in the flow of inlet water in chamber and inflow temperature, any one is not up to preset range, then exit detection process.Thus, it is possible to be effectively improved the detection qualification rate of ptc heater.

Further, first scheduled time can be in the range of 3 minutes to 5 minutes, and second scheduled time can be in the range of 1 minute to 5 minute, and the preset range of flow of inlet water is 9.5 L/min～10.5L/min, and the preset range of inflow temperature is 24 DEG C～26 DEG C.

Further, the first actuator can be hydraulic-driven part, if the hydraulic pressure value of the first actuator reaches predetermined value, judges that upper fixture has been displaced downwardly to clip position.

Alternatively, liquid return trough can be provided with on hydraulic press, liquid return trough can be located at the lower section of workbench, and position corresponding with workbench, the bottom of lower clamp has the first water hole connected with liquid return trough, the backwater end of cooling-water machine can be connected with liquid return trough, the method of detection ptc heater can also include: after ptc heater power-off, opens the first water hole.

Alternatively, the bottom of lower clamp can be provided with knock-pin and for the second actuator driving knock-pin to move along the vertical direction, and the method for detection ptc heater can also include: after ptc heater power-off, and the second actuator drives knock-pin to eject ptc heater；After ptc heater takes out, knock-pin resets.

The method detecting ptc heater according to this utility model embodiment is described in detail below in conjunction with Fig. 1 to Fig. 6.

Specifically, method includes:

S1: the first actuator drives upper fixture to move down, wherein, first actuator can be hydraulic-driven part, the situation of fixture can be judged, such as, when the oil pressure in the first actuator reaches predetermined pressure by detecting the oil liquid pressure in the first actuator, upper fixture compresses with lower clamp, and between upper fixture and lower clamp, limit the receiving chamber of sealing, now, the probe contact ptc heater on upper fixture；

S2: supplied water to accommodating intracavity by cooling-water machine, after having supplied water, electrical control cubicles controls probe and connects high voltage power supply, powers ptc heater；

S3: for simulating the actual working environment of electric motor car, the flow of detection coolant and the temperature of coolant, make flow and temperature control in preset range；

S4: logical high-tension electricity, gathers peak point current, be energized 4 minutes, and period can monitoring current and the change of temperature in real time generate corresponding curve to observe；

S5: last stabling current value and the power of automatically calculating, the acquisition receiving parameter such as cavity temperature, electrode tip temperature judges that this product (i.e. ptc heater) is the most qualified.

Wherein, it should be noted that, the criterion of qualified products (i.e. ptc heater) is: the temperature of coolant is in the range of 24～26 DEG C, flow is in the range of 9.5～10.5L/min, stabling current value is (the temperature current scope of different ptc heaters is different) in the range of requiring, cavity temperature, electrode tip temperature all in claimed range (such as, less than 90 DEG C).

According to the equipment for detecting ptc heater of this utility model embodiment, can automatically obtain data and judge, multiple ptc heater can be tested, it is achieved automatically test simultaneously.Device is simple and crude, need manual operation risk high can also to overcome test in correlation technique, and can only test the deficiency of a ptc heater.

The work process of the equipment for detecting ptc heater according to this utility model embodiment is described in detail below in conjunction with Fig. 1 to Fig. 6.

Wherein, lower clamp is the holding tank of ptc heater, places into lower clamp, have cavity, for the circulation of coolant between ptc heater and lower clamp after the lower frame of ptc heater is loaded sealing ring.First actuator drives upper fixture to move down.When the pressure on oil gauge reaches setup pressure value, just reach sealing effectiveness, coolant can be led to.

Specifically, operator first put into ptc heater the ptc heater holding tank in lower clamp, then both hands press two start buttons on hydraulic press operating platform simultaneously, after electrical control cubicles receives signal, sending instructions to the first actuator by control unit, the first actuator can drive fixture to move down.When the pressure on oil gauge reaches setup pressure value, now probe just touches the electrode tip of ptc heater.Oil gauge can give electrical control cubicles signal, and the coolant in cooling-water machine can be by flowing in lower clamp for water end (W.E.), and electrical control cubicles can monitor flow and the temperature of coolant in real time simultaneously.When in cooling-water machine, the temperature of coolant rate and water side all reaches in the range of default, electrical control cubicles can control to open high voltage power supply, and set the voltage of high voltage power supply, high voltage power supply can be led on ptc heater by probe, detector unit on upper fixture is started working, and by Temperature Feedback to temperature controller, ammeter can gather peak point current and result is fed back to electrical control cubicles；After being persistently energized 4 minutes, electrical control cubicles starts to gather stabling current, collect 60 flows and cooling-water machine water side temperature all electric currents in the range of default time, electrical control cubicles can issue a command to high voltage power supply, high voltage power supply is set as 0V, simultaneously switch off high voltage power supply, close the liquid feed valve such as choke valve of cooling-water machine, open the tapping valve such as check valve in lower clamp, make in lower clamp in remaining coolant inflow liquid return trough 113, and demonstrate the parameters such as the peak point current of ptc heater, stabling current, each temperature conditions put on a display screen；After 15 seconds, the first actuator drives guide post to rise, and in drive, fixture rises to upper limit, and then knock-pin ejects ptc heater, closes the tapping valve such as check valve of lower clamp, and operator take out ptc heater, and knock-pin falls after rise to lower limit, and test terminates.Said method can be greatly saved the testing time, simple in construction, easy to operate.So far, the work process of the equipment for detecting ptc heater according to this utility model embodiment is completed.

In description of the present utility model, it will be appreciated that, term " on ", D score, " level ", the orientation of the instruction such as " end " " interior " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than instruction or the device of hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood as the case may be.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.

Although above it has been shown and described that embodiment of the present utility model, it is understandable that, above-described embodiment is exemplary, it is not intended that to restriction of the present utility model, above-described embodiment can be changed in the range of this utility model, revises, replace and modification by those of ordinary skill in the art.

Claims (10)

1. the equipment being used for detecting ptc heater, it is characterised in that including:

Hydraulic press, described hydraulic press has workbench；

Fixture, described fixture includes lower clamp and upper fixture, described lower clamp is located on the workbench of described hydraulic press and described lower clamp is relatively fixed with described hydraulic press, described upper fixture is movably arranged on described hydraulic press between clip position and released position, described upper fixture fastens at described clip position and described lower clamp and limits receiving chamber, described upper fixture separates with described lower clamp in described released position and is positioned at above described lower clamp, described upper fixture is provided with probe and for detecting the detector unit of described receiving cavity temperature, described probe is suitable to fixture on described and is positioned at described clip position and electrically connects with described ptc heater；

First actuator, described first actuator is located on described hydraulic press, and described first actuator is connected with described upper fixture to drive described upper fixture to move up and down；

Cooling-water machine, described cooling-water machine is connected with described fixture, connects with described receiving chamber with water flowing when on described, fixture is positioned at described clip position；

Electrical control cubicles, described electrical control cubicles is connected with described hydraulic press, described probe and described detector unit respectively；

The bottom of described lower clamp is provided with knock-pin and the second actuator, and described knock-pin is vertically extending and can protrude upward the diapire of described lower clamp, and described second actuator is connected with described knock-pin for driving described knock-pin to move up and down.

2. according to the equipment for detecting ptc heater that claim 1 is described, it is characterized in that, described lower clamp is the cassette shapes of opening upwards, and described upper fixture is the cassette shapes that Open Side Down, and described upper fixture is tightly connected with described lower clamp at described clip position.

Equipment for detecting ptc heater the most according to claim 2, it is characterized in that, horizontally disposed probe mounting seat it is provided with in described upper fixture, the week of described probe mounting seat is tightly connected along the inner peripheral surface with described upper fixture, and described probe and described detector unit are located in described probe mounting seat.

4. according to the equipment for detecting ptc heater according to any one of claim 1-3, it is characterized in that, the first pressure transmitter and second pressure transmitter of described lower clamp it is communicated with on described lower clamp, being connected with described first pressure transmitter for water end (W.E.) of described cooling-water machine, and the backwater end of described cooling-water machine is connected with described second pressure transmitter.

5. according to the equipment for detecting ptc heater according to any one of claim 1-3, it is characterized in that, described hydraulic press is provided with liquid return trough, described liquid return trough is located at the lower section of described workbench, and position corresponding with workbench, the bottom of described lower clamp is respectively provided with the first water hole connected with described liquid return trough.

Equipment for detecting ptc heater the most according to claim 5, it is characterized in that, being formed with collecting tank on described workbench, the lower end of described lower clamp is located in described collecting tank, and the bottom of described collecting tank is equipped with the second water hole connected with described liquid return trough with corresponding positions on workbench.

Equipment for detecting ptc heater the most according to claim 1, it is characterized in that, described hydraulic press is provided with temperature controller and ammeter, and described temperature controller is between described electrical control cubicles and described detector unit, and described ammeter is connected between described electrical control cubicles and described probe.

Equipment for detecting ptc heater the most according to claim 1, it is characterised in that described first actuator is hydraulic-driven part, described hydraulic press is provided with the oil gauge of the oil liquid pressure in detecting described first actuator.

Equipment for detecting ptc heater the most according to claim 1, it is characterized in that, connecting on described upper fixture has vertically extending guide post, described guide post to fix relative to position with described upper fixture, and described guide post is vertically slidably disposed on described hydraulic press.

Equipment for detecting ptc heater the most according to claim 1, it is characterised in that described fixture includes spaced apart multiple.