CN203101872U - A precharging system containing relays connected in parallel - Google Patents
A precharging system containing relays connected in parallel Download PDFInfo
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- CN203101872U CN203101872U CN 201220742358 CN201220742358U CN203101872U CN 203101872 U CN203101872 U CN 203101872U CN 201220742358 CN201220742358 CN 201220742358 CN 201220742358 U CN201220742358 U CN 201220742358U CN 203101872 U CN203101872 U CN 203101872U
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Abstract
The utility model discloses a precharging system containing relays connected in parallel. The positive pole of a DC power supply B1 is connected with one end of the contact of a first relay H1, while the other end of the contact of the first relay H1 is connected with one end of a precharging resistor R1. The other end of the precharging resistor R1 is connected with the positive pole of an electrolytic capacitor C1, while the negative pole of the electrolytic capacitor C1 is connected with the negative pole of the DC power supply B1. A plurality of relays of a second relay H2 and a third relay H3 or the like are connected in parallel. A parallel node M is connected with the positive pole of the DC power supply B1. A parallel node N is connected with the positive pole of the electrolytic capacitor C1 and one end of a power converting module (2). The other end of the power converting module (2) is connected with the negative pole of the DC power supply B1. A control module (1) configures the current in the coil of the first relay H1 and the current in the coil of the plurality of relays of the second relay and the third relay or the like which are connected in parallel so as to control the connection of the contact of the relays. The utility model is aimed at providing the precharging system which contains relays connected in parallel and which substantially reduces the size and the cost of a system.
Description
Technical field
The utility model belongs to the precharge field, is specifically related to the pre-charge system that a kind of employing has the structure of some relay parallel connections.
Background technology:
The precharge management system, be to the bus capacitor pre-charge in the subsystems such as controller before the car load high-voltage electric system powers on, the electricity for the treatment of bus capacitor be charged to the voltage of electrokinetic cell or accumulator near the time, the closing of contact of the relay on the control high voltage bus is given the power supply of car load high-voltage electric system.Pre-charge system is the indispensable part of Full Vehicle System assembly.But because the electric current on the high voltage bus is very big, so relay of common employing 150A to the 300A rated current on the high voltage bus, but the relay of above-mentioned rated current not only cost height but also volume is very big, can't be installed on the pcb board of precharge controller, can only with the discrete setting of precharge controller, thereby also need supporting with it heat dissipation base and monolithic case, further strengthened the volume of whole pre-charge system, and need the cost of supporting heat dissipation base and monolithic case also higher, further increased the cost of pre-charge system.How making the precharge management system can satisfy functional requirement, make pre-charge system miniaturization of a whole set of pipe and cost the again, is the problem that will solve in the pre-charge system design process all the time.
The utility model content:
The purpose of this utility model is to overcome deficiency of the prior art, thereby adopt a plurality of relays relay that substitutes traditional big rated current in parallel, and and then make relay can be installed on the pcb board, save required heat dissipation base of high-current relay and monolithic case, thereby a kind of pre-charge system that can reduce volume and cost significantly is provided.
Its technical scheme is:
Comprise direct supply B1, the first relay H1, pre-charge resistance R1, bus capacitor C1, control module, power conversion module, it is characterized in that: the relay that also comprises some parallel connections such as the second relay H2, the 3rd relay H3; The positive pole of direct supply B1 connects an end of the contact of the first relay H1, the other end of the contact of the first relay H1 connects the end of pre-charge resistance R1, the other end of pre-charge resistance R1 connects the positive pole of electrochemical capacitor C1, and electrochemical capacitor C1 negative pole connects the negative pole of direct supply B1; One end of the contact of some relays such as the second relay H2, the 3rd relay H3 interconnects, the other end of contact also interconnects, thereby make some relays such as the second relay H2, the 3rd relay H3 form parallel connection, one and the positive pole of tie-point M connection direct supply B1 after the parallel connection, another and tie-point N connect the positive pole of electrochemical capacitor C1 and an end of power conversion module, and the other end of power conversion module connects the negative pole of direct supply B1; Thereby control module disposes the break-make that electric current in the coil of relay of the first relay H1 coil and some parallel connections such as the second relay H2, the 3rd relay H3 is controlled each relay contact.
The quantity of the relay of some parallel connections such as the second relay H2, the 3rd relay H3 is more than or equal to 2; For the contact of each relay in the relay of some parallel connections such as the second relay H2, the 3rd relay H3, the lead that is connected with the one end all closely is provided with thermistor, and each thermistor is connected to control module respectively.
Control module receives the temperature parameter of each contact of the relay of some parallel connections such as the second relay H2, the 3rd relay H3 by each thermistor.
Power conversion module exports load to, if load is an AC system, then power conversion module carries out the DC-AC conversion and exports load to the direct current of direct supply B1 output; If load is a straight-flow system, then power conversion module carries out the DC-to-dc conversion and exports load to the direct current of direct supply B1 output.
Than traditional pre-charge system, the utlity model has significant advantage and beneficial effect, be embodied as:
1. thereby adopt the less relay parallel connection of some rated current to realize the function that big rated current current relay can be realized, the cost of the relay that rated current is less is usually less than 10 yuan, and the cost of big rated current current relay is generally 150 yuan to 200 yuan even higher, thereby has reduced the manufacturing cost of pre-charge system.
2. the less relay of rated current is little more a lot of than the volume of the relay of big rated current, can integratedly be installed on the pcb board of the precharge controller in the pre-charge system, thereby the situation that the relay that has changed high voltage bus in the past and precharge controller separate setting, reduced the volume of whole pre-charge system, stayed to other parts of Full Vehicle System the space more is set; And, also no longer need traditional pre-charge system required radiating bottom plate and monolithic case, thereby further reduced the cost more than 500 yuan for the outfit of high-current relay seat because relay is built-in.
3. the reliability of parallel relay, the other thermistor that is provided with in the contact of each relay, thereby gather the temperature parameter of relay in real time, timely break contact under the relay outlet condition of overhigh temperature in sight, thereby guarantee that in parallel each can not burn out, thereby when reducing system bulk and cost, the reliability and the security of system have been guaranteed.
Description of drawings
Fig. 1 is the synoptic diagram of the embodiment 1 of the pre-charge system with parallel relay of the present utility model;
Fig. 2 is the synoptic diagram of the embodiment 2 of the pre-charge system with parallel relay of the present utility model;
Fig. 3 is the synoptic diagram of the embodiment 3 of the pre-charge system with parallel relay of the present utility model;
Fig. 4 is the synoptic diagram of the embodiment 4 of the pre-charge system with parallel relay of the present utility model.
Embodiment
Narrate embodiment of the present utility model below in conjunction with accompanying drawing; below in conjunction with accompanying drawing the utility model embodiment is further described; below just exemplary about the description of embodiment of the present utility model; be not in order to limit claimed theme of the present utility model; for other variations in the claim protection domain that the described embodiment of the utility model also exists, all belong to the theme of the required protection of the utility model.
As accompanying drawing 1, among the embodiment 1, system comprises direct supply B1, the first relay H1, pre-charge resistance R1, bus capacitor C1, control module 1, power conversion module 2, also comprises the relay of some parallel connections such as the second relay H2, the 3rd relay H3; The positive pole of direct supply B1 connects an end of the contact of the first relay H1, the other end of the contact of the first relay H1 connects the end of pre-charge resistance R1, the other end of pre-charge resistance R1 connects the positive pole of electrochemical capacitor C1, and electrochemical capacitor C1 negative pole connects the negative pole of direct supply B1; One end of the contact of some relays such as the second relay H2, the 3rd relay H3 interconnects, the other end of contact also interconnects, thereby make some relays such as the second relay H2, the 3rd relay H3 form parallel connection, one and the positive pole of tie-point M connection direct supply B1 after the parallel connection, another and tie-point N connect the positive pole of electrochemical capacitor C1 and an end of power conversion module 2, and the other end of power conversion module 2 connects the negative pole of direct supply B1; Thereby electric current is controlled the break-make of each relay contact in the coil of the relay of the control module 1 configuration first relay H1 coil and some parallel connections such as the second relay H2, the 3rd relay H3, one end of the coil of the first relay H1 is connected to control module 1, other end ground connection; Behind the coils from parallel connection of coils of the relay of some parallel connections such as the second relay H2, the 3rd relay H3, one and tie-point are connected to controller 1, another and tie-point ground connection.
The quantity of the relay of some parallel connections such as the second relay H2, the 3rd relay H3 is more than or equal to 2; The lead that is connected with an end of the contact of each relay in the relay of some parallel connections such as the second relay H2, the 3rd relay H3 all closely is provided with thermistor.As: for the contact of the second relay H2, the lead that is connected with the one end all closely is provided with thermistor R2; For the contact of the 3rd relay H3, the lead that is connected with the one end all closely is provided with thermistor R3; Each thermistor is connected to control module 1 respectively, and an end of each thermistor is connected to control module 1, other end ground connection.
Controller at first disposes the coil of the first relay H1, makes in the coil of the first relay H1 by electric current, thereby makes the closing of contact of the first relay H1, and direct supply B1 begins bus capacitor C1 is charged.The voltage that N is ordered constantly raises, and move closer to the magnitude of voltage that M is ordered, when the difference of the voltage between M point and the N during less than certain scope (being generally) less than 5V, controller disposes the second relay H2, in the coil of the relay of some parallel connections such as the 3rd relay H3 by electric current and interrupt electric current in the coil of first relay, and then make the second relay H2, the closing of contact of the relay of some parallel connections such as the 3rd relay H3, the contact of the first relay H1 disconnects, direct supply B1 outputs current to power conversion module 2, and power conversion module 2 carries out exporting load 3 again to after the power transfer; The voltage acquisition of ordering for M point and N, usually by M point and N point extension line to controller, and this pin configuration is not the necessary technology point of the technical solution of the utility model, and this pin configuration is that present technique field personnel are known, so for the sake of brevity, do not do demonstration in the accompanying drawings.Controller is gathered the conductor temperature that the contact of the relay of some parallel connections such as the second relay H2, the 3rd relay H3 connects by thermistor, when temperature is too high, configuration disconnects the relay contact of some parallel connections such as the second relay H2, the 3rd relay H3, prevent that relay from burning out because of electric current is excessive, relay burns out because of electric current is excessive.Between M point and direct supply B1, also insurance can be set usually; the relay that further prevents some parallel connections such as the second relay H2, the 3rd relay H3 burns out because of electric current is excessive; but because of insurance is not a necessary technology point of the present utility model; but one of optional method of the reliability of increase circuit; be present technique; the field personnel are known, thus succinct in order to describe, do not indicate in the accompanying drawings.
As Fig. 2, embodiment 2 is that with the difference of embodiment 1 coil of the relay of some parallel connections such as the second relay H2, the 3rd relay H3 is not in parallel, but separately an end of coil is connected to control module 1, other end ground connection.
As Fig. 3, embodiment 3 is that with the difference of embodiment 1 end of the coil of the relay of some parallel connections such as first relay and the second relay H2, the 3rd relay H3 is connected to control module 1 separately, and the other end is connected to some back access controller.
As Fig. 4, embodiment 4 is that with the difference of embodiment 1 end of the coil of the relay of some parallel connections such as first relay and the second relay H2, the 3rd relay H3 is connected to control module 1 respectively, and the other end also is connected to controller respectively; One end of each thermistor is connected to control module 1 respectively, and the other end also is connected to control module 1. respectively
In conjunction with Fig. 1 to Fig. 4, thereby the difference of each embodiment is the electric current that controller is finished in the coil of each relay of configuration and controls the break-make of the contact of each relay, the form of its circuitry needed structure is not unique, have a lot of middle distortion, thereby dispose electric current in the coil of each relay controls the formed circuit structure of break-make of the contact of each relay and is known by those skilled in that art because of controller, can not misunderstand, so for purpose of brevity, only enumerate above four kinds of circuit structures in this patent file.
Structure in the frame of broken lines among Fig. 1 to Fig. 4 is for being integrated into the structure of the pcb board of precharge controller in this pre-charge system, as can be seen, this pre-charge system is all inherited each relay on the pcb board of system precharge controller, thus the manufacturing cost of the system that reduces significantly and volume.
For being one exemplary embodiment of the present utility model; should be understood to is wherein a certain demonstrative example in the protection domain of claims of the present utility model; have the directiveness effect that those skilled in the art is realized the corresponding techniques scheme, but not to qualification of the present utility model.
Claims (4)
1. pre-charge system with parallel relay, comprise direct supply B1, the first relay H1, pre-charge resistance R1, bus capacitor C1, control module (1), power conversion module (2), it is characterized in that: the relay that also comprises some parallel connections such as the second relay H2, the 3rd relay H3; The positive pole of direct supply B1 connects an end of the contact of the first relay H1, the other end of the contact of the first relay H1 connects the end of pre-charge resistance R1, the other end of pre-charge resistance R1 connects the positive pole of electrochemical capacitor C1, and electrochemical capacitor C1 negative pole connects the negative pole of direct supply B1; One end of the contact of some relays such as the second relay H2, the 3rd relay H3 interconnects, the other end of contact also interconnects, thereby make some relays such as the second relay H2, the 3rd relay H3 form parallel connection, one and the positive pole of tie-point M connection direct supply B1 after the parallel connection, another and tie-point N connect the positive pole of electrochemical capacitor C1 and an end of power conversion module (2), and the other end of power conversion module (2) connects the negative pole of direct supply B1; Control module (1) thus electric current is controlled the break-make of each relay contact in the coil of the relay of the configuration first relay H1 coil and some parallel connections such as the second relay H2, the 3rd relay H3.
2. the pre-charge system with parallel relay according to claim 1 is characterized in that: the quantity of the relay of some parallel connections such as the described second relay H2, the 3rd relay H3 is more than or equal to 2; For the contact of each relay in the relay of some parallel connections such as the second relay H2, the 3rd relay H3, the lead that is connected with the one end all closely is provided with thermistor, and each thermistor is connected to control module (1) respectively.
3. according to claim 1 or the described pre-charge system with parallel relay of claim 2, it is characterized in that: control module (1) receives the temperature parameter of each contact of the relay of some parallel connections such as the second relay H2, the 3rd relay H3 by each thermistor.
4. the pre-charge system with parallel relay according to claim 1, it is characterized in that: described power conversion module (2) exports load (3) to, if load (3) is an AC system, then power conversion module (2) carries out the DC-AC conversion and exports load (3) to the direct current of direct supply B1 output; If load (3) is a straight-flow system, then power conversion module (2) carries out the DC-to-dc conversion and exports load (3) to the direct current of direct supply B1 output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742358 CN203101872U (en) | 2012-12-28 | 2012-12-28 | A precharging system containing relays connected in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220742358 CN203101872U (en) | 2012-12-28 | 2012-12-28 | A precharging system containing relays connected in parallel |
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| Publication Number | Publication Date |
|---|---|
| CN203101872U true CN203101872U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220742358 Expired - Lifetime CN203101872U (en) | 2012-12-28 | 2012-12-28 | A precharging system containing relays connected in parallel |
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| Country | Link |
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| CN (1) | CN203101872U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048938A (en) * | 2012-12-28 | 2013-04-17 | 天津市松正电动汽车技术股份有限公司 | Pre-charging system with parallel connection type relay |
-
2012
- 2012-12-28 CN CN 201220742358 patent/CN203101872U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048938A (en) * | 2012-12-28 | 2013-04-17 | 天津市松正电动汽车技术股份有限公司 | Pre-charging system with parallel connection type relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191105 Address after: Room 312, floor 3, Xi'an innovation design center, No. 69, west section of south 2nd Ring Road, Xi'an City, Shaanxi Province cluster Registration No. 014 Patentee after: Shaanxi Tiantian Travel Technology Co.,Ltd. Address before: 300308 No., West ten, Airport Economic Zone, Dongli District Patentee before: TIANJIN SANTROLL ELECTRIC AUTOMOBILE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
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| CX01 | Expiry of patent term |