CN204613652U - The high-tension circuit of new-energy automotive air-conditioning heating system printed circuit board (PCB) and described printed circuit board (PCB) - Google Patents
The high-tension circuit of new-energy automotive air-conditioning heating system printed circuit board (PCB) and described printed circuit board (PCB) Download PDFInfo
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- CN204613652U CN204613652U CN201520163859.4U CN201520163859U CN204613652U CN 204613652 U CN204613652 U CN 204613652U CN 201520163859 U CN201520163859 U CN 201520163859U CN 204613652 U CN204613652 U CN 204613652U
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Abstract
The utility model discloses a kind of high-tension circuit of new-energy automotive air-conditioning heating system printed circuit board (PCB) and described printed circuit board (PCB).High-tension circuit comprises DC-DC module, filter capacitor, two inductance, two electrolytic capacitor filters, straight cutting filter capacitor, detection of electrical leakage module, IGBT driving chip, high tension voltage detection chip, high-tension current detection chip, IGBT, high voltage negative wire harness connector, high-voltage positive electrode wire harness connector, high-voltage relay, louvre and fixed orifices.High-tension circuit reduces high reject signal and external radiation, and high-tension electricity is detected.Printed circuit board (PCB) comprises high-tension circuit and low-voltage circuit, be distributed in the both sides of PCB, the connection of the electric signal of high-tension circuit and low-voltage circuit is realized by high-tension side photoelectric isolating device IGBT driving chip, high tension voltage detection chip, high-tension current detection chip.Well avoid high-tension circuit to the conduction of low-voltage circuit and coupling and radiation interference.
Description
[technical field]
The utility model relates to new-energy automotive air-conditioning, specifically a kind of high-tension circuit of new-energy automotive air-conditioning heating system printed circuit board (PCB) and described printed circuit board (PCB).
[background technology]
New-energy automotive air-conditioning heating system is one of key components and parts system in new-energy automobile evolution, owing to solving high voltage simultaneously, big current, double power-supply system (high pressure and low pressure), high-power heat-dissipation, water-electricity integrated, and the problem such as personal safety, therefore the design of circuit and the rational deployment of printed circuit board (PCB) are one of gordian techniquies of new-energy automotive air-conditioning heating system.Irrational printed circuit board layout can reduce the performance of heating system, reliability and security.And high-tension circuit is key component wherein.
[summary of the invention]
The purpose of this utility model is to provide a kind of high-tension circuit of control system printed circuit board (PCB) of new-energy automotive air-conditioning heating system and described printed circuit board (PCB).The control system of new-energy automotive air-conditioning heating system controls heating system and normally works, and realizes various exception or fault monitoring and protection.The utility model new-energy automotive air-conditioning heating system printed circuit board (PCB) can guarantee electrical security, Electro Magnetic Compatibility, reliability, water-proof sealing, guarantees that volume and cost are within zone of reasonableness simultaneously, and when producing, is convenient to be installed to interiors of products.
A kind of new-energy automotive air-conditioning heating system printed circuit board (PCB), be included in electrically upper completely isolated high-tension circuit and low-voltage circuit, spatially high-tension circuit and low-voltage circuit are distributed in the both sides of PCB (i.e. printed circuit board (PCB)), a segment distance spaced intermediate, do not have lap, the connection of the electric signal of high-tension circuit and low-voltage circuit is only realized on high-tension side photoelectric isolating device IGBT driving chip, high tension voltage detection chip, high-tension current detection chip by layout.The advantage of such layout is, well avoid high-tension circuit to the conduction of low-voltage circuit and coupling and radiation interference, guarantee reliability and stability and the precision of low-voltage circuit, it also avoid high-pressure side and leak electricity to the risk of low-pressure side, ensure that device can not damage, also ensure that life safety.
The layout of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit: the arranged beneath DC-DC module on the left of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit, the right side of DC-DC module is the filter capacitor of input power, the right of filter capacitor is two inductance be arranged above and below, and the left side of DC-DC is two electrolytic capacitor filters of out-put supply.Such layout, is convenient to PCB cabling, and high reject signal when also DC-DC can be worked is limited near circuitry, reduces external radiation to greatest extent.Arrange on high-tension side straight cutting filter capacitor above DC-DC module, the right of this electric capacity is the detection of electrical leakage module of high-tension electricity.This is equivalent to porch detection of electrical leakage module being placed on high-tension electricity, and high-tension electricity one enters product, and first carry out detection of electrical leakage, subsequent conditioning circuit leaks electricity Anywhere, and can obtain detecting and take safeguard measure in time, the security of product obtains optimization.Be IGBT driving chip and the high tension voltage detection chip of upper and lower arrangement above detection of electrical leakage module, the adjoiner of plank top centre position high-tension circuit and low-voltage circuit is high-tension current detection chip, these three chips of IGBT driving chip, high tension voltage detection chip and high-tension current detection chip are all photoelectric isolating devices, also be the electric connecting point of high-tension circuit and low-voltage circuit, be arranged in the outermost of high-tension circuit part, guarantee high-low pressure isolation spatially, minimizing high-tension circuit that can be maximum is to the interference of low-voltage circuit and the danger that causes.The upper left corner panel edges of PCB is the IGBT of straight cutting, so just by opening a fenestella on housing, by this fenestella, with screw, packing ring, IGBT can be tightened on the heat radiator being close to product shell outside.Benefit is: first, and the heat of IGBT is fallen apart to the outside of product, and the temperature of IGBT is under control, and don't the temperature of interiors of products can be caused obviously to raise, secondly, the integral waterproofing of product, is used between heat radiator and product shell and adds rubber blanket mode to realize, simply, cheap, finally, huge heat radiator is put into the outside of housing, reduces the volume of product, reduce structural complexity, also reduce cost.So IGBT is arranged in the edge, the upper left corner of pcb board, killing three birds with one stone.Near the below of IGBT, it is the high voltage negative wire harness connector of powering to heating rod.This high voltage negative wire harness connector end is electrical connection pad, by screw, nut, packing ring, wire harness is connected to the output terminal of high-voltage relay.Like this can less with a high-voltage wiring harness connector, meanwhile, because high voltage negative wire harness connector is near IGBT, the Copper Foil cabling of negative pole on PCB is short, improves safe personality, reliability.A high-voltage positive electrode wire harness connector is arranged between high voltage negative wire harness connector and high-voltage filtering capacitor, high-tension electricity is introduced through from high-voltage relay input end, object is capacitor filtering and the high-tension electricity voltage detecting of carrying out high-tension electricity, this high-tension electricity passage current is little, such layout makes the cabling of high-tension electricity on PCB short, also fabric swatch is easy to, also more reliable and secure.
High-voltage relay is placed on the centre of PCB, PCB there is the mounting hole of two relays, relay, by these two holes, makes relay can be fixed on plastics lower house with screw, packing ring cleverly, instead of is fixed on (PCB cannot bear the weight of relay) on PCB.The space above PCB can also be made full use of like this, for installing relay, reducing the volume of product, reducing costs.The envisaged underneath of relay has multiple louvre hole, is beneficial to the heat radiation of relay.
The periphery of PCB has multiple thermal convection mouth, and these thermal convection mouths, are beneficial to the convection current of air below PCB, prevents pcb board local temperature too high.These convection current mouth-shapeds can be circular, square various shapes, also can in the inside of pcb board to head piece, not necessarily will at the periphery of pcb board.
Pcb board there are three fixed orifices, become triangle to be uniformly distributed, uniform support, fixing PCB, the preferably deformation of control PCB.On the upper left side of relay, have the straight cutting pad that is electrically connected, after high-voltage power supply ground wire harness enters product, ground wire harness end welds a pad, this pad screw, nut, packing ring are tightened to this electrical connection pad, realize the connection of high pressure ground circuit.The benefit of this mode is, current capacity is large, and do not need high-voltage great-current connector, cost is low, and dismounting also facilitates.
The layout of low-voltage circuit: low pressure plug-in unit is placed on the below on the right side of PCB, voltage source introduces pcb board by this low pressure plug-in unit, low frequency filtering common mode inductance is close to and is placed on above low pressure plug-in unit, High frequency filter inductance and electrochemical capacitor and Transient Suppression Diode are near the right side being arranged in low frequency common inductance, outside electrical Interference can be made so namely to obtain effective filtering in the porch of PCB, ensure that the electric signal of PCB inside is clean, the internal interference signals of pcb board simultaneously, tackled in the exit of pcb board, greatly reduce the external various radiation of PCB and interference, the EMC performance of product is ensured.Voltage source is after entrance filtering, enter, the LDO circuit of low-pressure side, this circuit arrangement is leaning on the pcb board lower right corner at once, the voltage of internal logic circuit so both can have been made clean, again can the various external interference of filtering internal low-voltage circuit and radiation to greatest extent.Single-chip microcomputer is arranged in the centre position of lower-voltage circuit, is convenient to be connected with other wiring, reduces the complicacy of wiring, optimizes electric property.
The present invention compared with the existing technology, has following advantage:
High-tension circuit reduces high reject signal and external radiation; Detected high-tension electricity, and detect in time the electric leakage of subsequent conditioning circuit and take safeguard measure, the security of product obtains optimization; Guarantee high-low pressure isolation spatially, maximum minimizing high-tension circuit is to the interference of low-voltage circuit and the danger that causes; The heat of IGBT falls apart to the outside of product, and the temperature of IGBT is under control, and the temperature of interiors of products can not be caused again obviously to raise, reduce the volume of product, reduce structural complexity, also reduce cost; The heat radiation of relay is protected; Easy accessibility is installed.And namely the electrical Interference of low-voltage circuit outside obtains effective filtering in the porch of PCB, ensure that the electric signal of PCB inside is clean, the internal interference signals of pcb board simultaneously, tackled in the exit of pcb board, greatly reduce the external various radiation of pcb board and interference, the EMC performance of product is ensured.The voltage of internal logic circuit is clean, to greatest extent the various external interference of filtering internal low-voltage circuit and radiation.Single-chip microcomputer connection and reasonable arrangement, is convenient to be connected with other wiring, reduces the complicacy of wiring, optimizes electric property.Pcb board avoids high-tension circuit to the conduction of low-voltage circuit and coupling and radiation interference, guarantees reliability and stability and the precision of low-voltage circuit, it also avoid high-pressure side and leak electricity to the risk of low-pressure side, ensure that device can not damage, also ensure that life safety.Product is easy for installation, reliable and volumetric spaces is little.
[accompanying drawing explanation]
Fig. 1 is the layout of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit.
Fig. 2 is the layout of new-energy automotive air-conditioning heating system printed circuit board (PCB) not with line.
Fig. 3 is the layout of new-energy automotive air-conditioning heating system printed circuit board strip line.
1 is low pressure plug-in unit, and 2 is low frequency filtering common mode inductances, and 3 is High frequency filter inductance, and 4 are electrochemical capacitors 5 is Transient Suppression Diodes, and 6 is LDO circuit, and 7 is single-chip microcomputers, and 23 is fixed orifices.
8 is DC-DC module, and 9 is filter capacitors, and 10 is inductance, 11 is electrolytic capacitor filters, and 12 is straight cutting filter capacitors, and 13 is detection of electrical leakage modules, 14 is IGBT driving chip, and 15 is high tension voltage detection chip, and 16 is high-tension current detection chip, 17 is IGBT, and 18 is high voltage negative wire harness connectors, and 19 is high-voltage positive electrode wire harness connectors, 20 is high-voltage relays, 21 is mounting holes, and 22 is louvres, and 24 is straight cutting pads.
[embodiment]
Embodiment
As shown in Figure 1, arranged beneath DC-DC module 8 on the left of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit, the right side of DC-DC module is the filter capacitor 9 of input power, the right of filter capacitor 9 is two inductance 10 be arranged above and below, and the left side of DC-DC module 8 is two electrolytic capacitor filters 11 of out-put supply.Such layout, is convenient to PCB cabling, and high reject signal when also DC-DC module 8 can be worked is limited near circuitry, reduces external radiation to greatest extent.Arrange on high-tension side straight cutting filter capacitor 12 above DC-DC module 8, the right of straight cutting filter capacitor 12 is the detection of electrical leakage module 13 of high-tension electricity.This is equivalent to porch detection of electrical leakage module 13 being placed on high-tension electricity, and high-tension electricity one enters product, and first carry out detection of electrical leakage, subsequent conditioning circuit leaks electricity Anywhere, and can obtain detecting and take safeguard measure in time, the security of product obtains optimization.Be upper above detection of electrical leakage module 13, the IGBT driving chip 14 of lower arrangement and high tension voltage detection chip 15, new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit top right-hand side position is high-tension current detection chip 16, IGBT driving chip 14, high tension voltage detection chip 15 and these three chips of high-tension current detection chip 16 are all photoelectric isolating devices, also be the electric connecting point of high-tension circuit and low-voltage circuit, be arranged in the outermost of high-tension circuit part, guarantee high-low pressure isolation spatially, minimizing high-tension circuit that can be maximum is to the interference of low-voltage circuit and the danger that causes.The edge, the upper left corner of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit is the IGBT17 of straight cutting, so just can by opening a fenestella on housing, by this fenestella, with screw, packing ring, IGBT17 is tightened on the heat radiator being close to product shell outside.Benefit is: first, and the heat of IGBT17 is fallen apart to the outside of product, and the temperature of IGBT17 is under control, and don't the temperature of interiors of products can be caused obviously to raise, secondly, the integral waterproofing of product, is used between heat radiator and product shell and adds rubber blanket mode to realize, simply, cheap, finally, huge heat radiator is put into the outside of housing, reduces the volume of product, reduce structural complexity, also reduce cost.So IGBT17 is arranged in the edge, the upper left corner of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit, killing three birds with one stone.Near the below of IGBT17, it is the high voltage negative wire harness connector 18 of powering to heating rod.This high voltage negative wire harness connector 18 end is electrical connection pad, by screw, nut, packing ring, wire harness is connected to the output terminal of high-voltage relay 20.Like this can less with a high-voltage wiring harness connector, meanwhile, because high voltage negative wire harness connector 18 is near IGBT17, the Copper Foil cabling of negative pole on PCB is short, improves safe personality, reliability.A high-voltage positive electrode wire harness connector 19 is arranged between high voltage negative wire harness connector 18 and straight cutting filter capacitor 12, high-tension electricity is introduced through from high-voltage relay 20 input end, object is capacitor filtering and the high-tension electricity voltage detecting of carrying out high-tension electricity, this high-tension electricity passage current is little, such layout makes the cabling of high-tension electricity on PCB short, also fabric swatch is easy to, also more reliable and secure.
High-voltage relay 20 is placed on the centre position, the right of new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit, new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit there is the mounting hole 21 of two high-voltage relays 20, high-voltage relay is by these two holes, make high-voltage relay 20 can be fixed on plastics lower house with screw, packing ring cleverly, instead of be fixed on (PCB cannot bear the weight of relay) on PCB.The space above PCB can also be made full use of like this, for installation high-voltage relay, reduce the volume of product, reduce costs.The envisaged underneath of high-voltage relay 20 has multiple louvre 22, is beneficial to the heat radiation of relay.
The periphery of PCB has multiple thermal convection mouth, and these are to head piece, are beneficial to the convection current of air below PCB, prevents pcb board local temperature too high.These convection current mouth-shapeds can be circular, square various shapes, also can in the inside of pcb board to head piece, not necessarily will at the periphery of pcb board.
As shown in Figure 1, Figure 2, Figure 3 shows, pcb board there are three fixed orifices 23, become triangle to be uniformly distributed, uniform support, fixing PCB, the preferably deformation of control PCB.On the upper left side of high-voltage relay, there is the straight cutting pad 24 that is electrically connected, after high-voltage power supply ground wire harness enters product, ground wire harness end welds a pad, this pad screw, and nut, packing ring is tightened to straight cutting pad 24, realizes the connection of high pressure ground circuit.The benefit of this mode is, current capacity is large, and do not need high-voltage great-current connector, cost is low, and dismounting also facilitates.
The utility model is not by the restriction of above-mentioned embodiment; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. a new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit, comprise DC-DC module, filter capacitor, two inductance, two electrolytic capacitor filters, straight cutting filter capacitor, detection of electrical leakage module, IGBT driving chip, high tension voltage detection chip, high-tension current detection chip, IGBT, high voltage negative wire harness connector, high-voltage positive electrode wire harness connector, high-voltage relay, louvre, and fixed orifice, it is characterized in that: the arranged beneath DC-DC module of new-energy automobile heating system printed circuit board (PCB) high-tension circuit, the right side of DC-DC module is filter capacitor, the right of filter capacitor is two inductance be arranged above and below, the left side of DC-DC is two electrolytic capacitor filters, the straight cutting of the layout above filter capacitor of DC-DC module, the right of straight cutting filter capacitor is the detection of electrical leakage module of high-tension electricity, be IGBT driving chip and the high tension voltage detection chip of upper and lower arrangement above detection of electrical leakage module, new-energy automobile heating system printed circuit board (PCB) high-tension circuit top right-hand side position is high-tension current detection chip, the upper left corner panel edges of new-energy automobile heating system printed circuit board (PCB) high-tension circuit arranges IGBT, below near IGBT is high voltage negative wire harness connector, arranges a high-voltage positive electrode wire harness connector between high voltage negative wire harness connector and straight cutting filter capacitor, high-voltage relay is placed on the centre position, the right of new-energy automobile heating system printed circuit board (PCB) high-tension circuit.
2. new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit as claimed in claim 1, it is characterized in that: mounting hole new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit having two high-voltage relays, high-voltage relay, by described mounting hole, is fixed on plastics lower house with screw, packing ring; The envisaged underneath of high-voltage relay has multiple louvre.
3. a new-energy automotive air-conditioning heating system printed circuit board (PCB), use new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit as claimed in claim 1 or 2, it is characterized in that being included in electrically upper completely isolated low-voltage circuit and described new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit, described new-energy automotive air-conditioning heating system printed circuit board (PCB) high-tension circuit and low-voltage circuit are spatially distributed in the left and right sides of new-energy automotive air-conditioning heating system printed circuit board (PCB) respectively, a segment distance spaced intermediate, there is no lap, high-tension circuit and low-voltage circuit are by the IGBT driving chip of layout at described new-energy automobile heating system printed circuit board (PCB) high-tension circuit, high tension voltage detection chip, high-tension current detection chip realizes electrical connection.
4. new-energy automotive air-conditioning heating system printed circuit board (PCB) as claimed in claim 3, is characterized in that: described low-voltage circuit comprises low pressure plug-in unit, low frequency filtering common mode inductance, High frequency filter inductance, electrochemical capacitor, Transient Suppression Diode, LDO circuit and single-chip microcomputer; Low pressure plug-in unit is placed on the below on the right side of new-energy automotive air-conditioning heating system printed circuit board (PCB), and voltage source introduces pcb board by this low pressure plug-in unit; Low frequency filtering common mode inductance is close to and is placed on above low pressure plug-in unit; High frequency filter inductance, electrochemical capacitor and Transient Suppression Diode are near the right side being arranged in low frequency common inductance; LDO circuit arrangement is in the lower right corner of new-energy automotive air-conditioning heating system printed circuit board (PCB); Single-chip microcomputer is arranged in the centre position of lower-voltage circuit.
5. new-energy automotive air-conditioning heating system printed circuit board (PCB) as claimed in claim 3, is characterized in that: the periphery of new-energy automotive air-conditioning heating system printed circuit board (PCB) or inside have multiple thermal convection mouth, and described thermal convection mouth-shaped is circular or square; New-energy automotive air-conditioning heating system printed circuit board (PCB) there are three fixed orifices, become triangle to be uniformly distributed, uniform support, fixing described new-energy automotive air-conditioning heating system printed circuit board (PCB).
6. new-energy automotive air-conditioning heating system printed circuit board (PCB) as claimed in claim 5, it is characterized in that: on the upper left side of described relay, there is the straight cutting pad that is electrically connected, after high-voltage power supply ground wire harness enters, described high-voltage power supply ground wire harness end welds a pad, and described pad screw, nut, packing ring are tightened to described straight cutting pad.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163859.4U CN204613652U (en) | 2015-03-23 | 2015-03-23 | The high-tension circuit of new-energy automotive air-conditioning heating system printed circuit board (PCB) and described printed circuit board (PCB) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163859.4U CN204613652U (en) | 2015-03-23 | 2015-03-23 | The high-tension circuit of new-energy automotive air-conditioning heating system printed circuit board (PCB) and described printed circuit board (PCB) |
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| CN204613652U true CN204613652U (en) | 2015-09-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615254A (en) * | 2020-06-19 | 2020-09-01 | 苏州浪潮智能科技有限公司 | Printed circuit board and power supply design method thereof |
| CN112846451A (en) * | 2020-12-26 | 2021-05-28 | 上海沪工焊接集团股份有限公司 | High-frequency control circuit PCB layout method for welding machine |
| CN113299319A (en) * | 2021-05-25 | 2021-08-24 | 华晨鑫源重庆汽车有限公司 | Voice recognition module and recognition method based on edge AI chip |
-
2015
- 2015-03-23 CN CN201520163859.4U patent/CN204613652U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615254A (en) * | 2020-06-19 | 2020-09-01 | 苏州浪潮智能科技有限公司 | Printed circuit board and power supply design method thereof |
| CN112846451A (en) * | 2020-12-26 | 2021-05-28 | 上海沪工焊接集团股份有限公司 | High-frequency control circuit PCB layout method for welding machine |
| CN113299319A (en) * | 2021-05-25 | 2021-08-24 | 华晨鑫源重庆汽车有限公司 | Voice recognition module and recognition method based on edge AI chip |
| CN113299319B (en) * | 2021-05-25 | 2023-01-24 | 华晨鑫源重庆汽车有限公司 | Voice recognition module and recognition method based on edge AI chip |
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