CN211592276U - External charger of electric automobile - Google Patents
External charger of electric automobile Download PDFInfo
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- CN211592276U CN211592276U CN202020190686.6U CN202020190686U CN211592276U CN 211592276 U CN211592276 U CN 211592276U CN 202020190686 U CN202020190686 U CN 202020190686U CN 211592276 U CN211592276 U CN 211592276U
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- 238000001914 filtration Methods 0.000 claims abstract description 75
- 239000003990 capacitor Substances 0.000 claims description 194
- 230000002457 bidirectional effect Effects 0.000 claims description 32
- 230000001419 dependent effect Effects 0.000 claims description 12
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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Abstract
The utility model provides an electric automobile's external machine that charges, include: a charging plug; a DC charging gun; the charging function module, the alternating current filtering module and the direct current filtering module are arranged between the charging plug and the direct current charging gun; the charging function module comprises a charging function module, an alternating current input end, a direct current output end and a direct current charging gun, wherein the alternating current input end of the charging function module is connected with the charging plug through an alternating current filtering module and a first line, and the direct current output end of the charging function module is connected with the direct current charging gun through a direct current filtering module and a second line. The embodiment of the utility model provides an external charging machine can realize that electric automobile charges from the direct current of electric wire netting, is favorable to avoiding electric automobile to go up must to set up the on-vehicle machine that charges to occuping of vehicle space and the increase of vehicle cost, and the alternating current filter module and the direct current filter module that set up respectively around the functional module that just charge, can carry out two-stage filtering to the electric energy of exporting to electric automobile, can guarantee electric automobile's electromagnetic compatibility test.
Description
Technical Field
The utility model relates to an electric automobile technical field that charges, in particular to electric automobile's external machine that charges.
Background
With the development of electric vehicles (new energy vehicles) technology, direct current quick charging has become a trend of electric vehicle charging, but because the popularity of a direct current charging pile is poor, a vehicle-mounted charger still needs to be arranged on an electric vehicle, so that the vehicle cost is high, the convenient and efficient external charger becomes a better choice for vehicle enterprises to reduce the vehicle cost, and the electromagnetic compatibility of the charger directly influences the electromagnetic compatibility tests such as charging conduction, charging radiation and interference resistance, so how to ensure the electromagnetic compatibility of the external charger is one of the problems that technicians push the electric vehicle to develop at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical purpose that will reach provides an electric automobile's external machine that charges for solve current electric automobile and must set up the on-vehicle machine that charges and lead to with high costs, and avoid external machine that charges electromagnetic compatibility is poor to electric automobile's influence.
In order to solve the technical problem, an embodiment of the utility model provides an electric automobile's external machine that charges, include:
a charging plug connected to a power grid;
the direct current charging gun is connected with a direct current charging port of the electric automobile; and
the charging function module, the alternating current filtering module and the direct current filtering module are arranged between the charging plug and the direct current charging gun;
the charging function module comprises a charging function module, an alternating current input end, a direct current output end and a direct current charging gun, wherein the alternating current input end of the charging function module is connected with the charging plug through an alternating current filtering module and a first line, and the direct current output end of the charging function module is connected with the direct current charging gun through a direct current filtering module and a second line.
Specifically, as described above, the external charger includes the charging function module: the device comprises an AC-DC conversion unit connected with an AC input end, a DC-DC conversion unit connected with a DC output end and a transformer, wherein the AC-DC conversion unit is connected with the DC-DC conversion unit through the transformer.
Preferably, as described above, the external charger, the ac filtering module includes: the magnetic circuit comprises a piezoresistor, a first bidirectional clamping diode (TVS), a second bidirectional clamping diode, a first differential mode capacitor, a second differential mode capacitor, a first common mode capacitor group, a second common mode capacitor group, a first magnetic ring and a second magnetic ring;
the voltage dependent resistor, the first bidirectional clamping diode, the first differential mode capacitor, the first common mode capacitor bank, the second differential mode capacitor, the second common mode capacitor bank and the second bidirectional clamping diode are sequentially bridged between the anode and the cathode of the first circuit along the current input direction, the first circuit penetrates through the first magnetic ring and the second magnetic ring, the first magnetic ring is sleeved on a circuit between the first common mode capacitor bank and the second differential mode capacitor, and the second magnetic ring is sleeved on a circuit between the second differential mode capacitor bank and the second common mode capacitor bank.
Further, as to the external charger described above, the first common-mode capacitor bank and the second common-mode capacitor bank both include: a first common mode capacitance and a second common mode capacitance;
one end of the first common-mode capacitor is connected with the anode of the first circuit, and the other end of the first common-mode capacitor is grounded;
one end of the second common mode capacitor is connected with the negative electrode of the first circuit, and the other end of the second common mode capacitor is grounded.
Preferably, the external charger is provided with a voltage dependent resistor of 471K type;
the reverse turn-off voltage of the first bidirectional clamping diode and the second bidirectional clamping diode is 308V, the breakdown voltage is 308V, and the clamping voltage is 500V;
the first differential mode capacitor and the second differential mode capacitor are 275VAC membrane capacitors with safety level;
the first common-mode capacitor and the second common-mode capacitor are safety-level Y2 capacitors;
the first magnetic ring is a nanocrystalline magnetic ring;
the second magnetic ring is a nickel-zinc ferrite magnetic ring.
Preferably, as described above, the external charger includes the dc filter module: a third differential mode capacitor, a fourth differential mode capacitor, a third common mode capacitor group, a fourth common mode capacitor group, a third magnetic ring and a fourth magnetic ring;
the third differential mode capacitor, the third common mode capacitor bank, the fourth differential mode capacitor and the fourth common mode capacitor bank are sequentially bridged between the anode and the cathode of the second circuit along the current output direction, the second circuit penetrates through the third magnetic ring and the fourth magnetic ring, the third magnetic ring is sleeved on the circuit between the third common mode capacitor bank and the fourth differential mode capacitor, and the fourth magnetic ring is sleeved on the circuit between the fourth differential mode capacitor bank and the fourth common mode capacitor bank.
Specifically, as for the external charger, the third common-mode capacitor bank and the fourth common-mode capacitor bank each include: a third common mode capacitor and a fourth common mode capacitor;
one end of the third common-mode capacitor is connected with the anode of the second circuit, and the other end of the third common-mode capacitor is grounded;
one end of the fourth common mode capacitor is connected with the negative electrode of the second circuit, and the other end of the fourth common mode capacitor is grounded.
Preferably, in the external charger as described above, the third differential capacitor is at least a 305VAC film capacitor of safety level, and the fourth differential capacitor is at least a 275VAC film capacitor of safety level;
the third common-mode capacitor and the fourth common-mode capacitor are safety-level Y2 capacitors or safety-level Y1 capacitors;
the third magnetic ring is a nanocrystalline magnetic ring;
the fourth magnetic ring is a nickel-zinc ferrite magnetic ring.
Further, the external charger as described above further includes: a housing;
the charging function module, the alternating current filtering module and the direct current filtering module are all arranged in the shell.
Optionally, the external charger includes a casing including three sub-casings, the charging function module, the ac filtering module and the dc filtering module are respectively disposed in one sub-casing, and the three sub-casings are fixedly connected to each other.
Compared with the prior art, the embodiment of the utility model provides a pair of electric automobile's external machine that charges has following beneficial effect at least:
the embodiment of the utility model provides an in, the external machine that charges that provides includes: the charging plug, the direct current rifle that charges and set up the function module that charges between charging plug and direct current rifle, exchange filtering module and direct current filtering module, wherein the charging plug is connected with the electric wire netting and receives the electric energy of electric wire netting, and transmit the electric energy to the direct current rifle that charges with the direct current mouth of being connected of electric automobile through the function module that charges, and then realize electric automobile's direct current charging, wherein the function module that charges can change the alternating current into the direct current, be favorable to avoiding because of direct current fills electric pile low in popularity, lead to must set up the vehicle space occupation of on-vehicle machine and the increase of vehicle cost on the electric automobile, charging plug directly is connected with the electric wire netting simultaneously, make the user independently select charging position and charging time according to actual conditions, reduce the vehicle charging vexation that leads to because of charging pile restriction.
An alternating current filtering module is arranged between the alternating current input end of the charging function module and the charging plug and is used for filtering alternating current input by a power grid and inhibiting electromagnetic interference from the power grid; the direct current filter module is arranged between the direct current output end of the charging function module and the direct current charging gun and used for continuously filtering direct current output by the charging function module, filtering the direct current before the direct current is output to the electric automobile again, suppressing electromagnetic interference generated in the process of converting alternating current into direct current and/or electromagnetic interference not completely suppressed by alternating current filtering, and ensuring that electric energy output to the electric automobile cannot influence the electromagnetic compatibility test of the whole automobile through two-stage filtering. The charging function modules are generally supplied by suppliers, the power levels of the charging function modules are different, and the alternating current filtering module and the direct current filtering module are respectively arranged at the two ends of the charging function module, so that the charging function modules supplied by different suppliers can be ensured to realize electromagnetic compatibility during use, and further, the cost is saved.
Drawings
Fig. 1 is a schematic structural view of the external charger of the present invention;
fig. 2 is a schematic structural diagram of the ac filtering module according to the present invention;
fig. 3 is a schematic structural diagram of the dc filter module of the present invention.
[ description of reference ]
1. A charging plug; 2. a DC charging gun; 3. an AC filtering module; 301. a voltage dependent resistor; 302. a first bi-directional clamping diode; 303. a second bidirectional clamp diode; 304. a first differential mode capacitor; 305. a second differential mode capacitance; 306. a first common mode capacitor set; 307. a second common mode capacitance group; 308. a first magnetic ring; 309. a second magnetic ring; 4. a charging function module; 5. a direct current filtering module; 501. a third differential mode capacitor; 502. a fourth differential mode capacitor; 503. a third common mode capacitance group; 504. a fourth common mode capacitance group; 505. a third magnetic ring; 506. a fourth magnetic ring; 6. a housing.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details are provided, such as specific configurations and components, merely to facilitate a thorough understanding of embodiments of the invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1, a preferred embodiment of the present invention provides an external charger for an electric vehicle, including:
a charging plug 1 connected to a power grid;
the direct current charging gun 2 is connected with a direct current charging port of the electric automobile; and
the charging function module 4, the alternating current filtering module 3 and the direct current filtering module 5 are arranged between the charging plug 1 and the direct current charging gun 2;
wherein, the AC input end of the charging function module 4 is connected with the charging plug 1 through the AC filtering module 3 and the first line, and the DC output end of the charging function module 4 is connected with the DC charging gun 2 through the DC filtering module 5 and the second line.
The embodiment of the utility model provides an in, the external machine that charges that provides includes: a charging plug 1, a direct current charging gun 2, a charging function module 4, an alternating current filtering module 3 and a direct current filtering module 5 which are arranged between the charging plug 1 and the direct current charging gun 2, wherein the charging plug 1 is connected with the power grid to receive the electric energy of the power grid and transmits the electric energy to the direct current charging gun 2 connected with the direct current charging port of the electric automobile through the charging function module 4, thereby realizing the direct current charging of the electric automobile, wherein the charging function module 4 can convert alternating current into direct current, which is beneficial to avoiding the occupation of vehicle space and the increase of vehicle cost caused by the vehicle-mounted charger which is required to be arranged on the electric vehicle due to the low popularization degree of the direct current charging pile, simultaneously charging plug 1 is direct to be connected with the electric wire netting for the user can independently select charging position and charging time according to actual conditions, reduces because of filling the vehicle that the restriction of electric pile leads to and charges the vexation.
An alternating current filtering module 3 is arranged between an alternating current input end of the charging functional module 4 and the charging plug 1 and is used for filtering alternating current input by a power grid and inhibiting electromagnetic interference from the power grid; the direct current filter module 5 is arranged between the direct current output end of the charging function module 4 and the direct current charging gun 2 and used for continuously filtering direct current output by the charging function module 4, filtering is carried out again before the direct current is output to the electric automobile, electromagnetic interference generated in the process of converting alternating current into direct current and/or electromagnetic interference not completely inhibited by alternating current filtering are inhibited, and the electric energy output to the electric automobile is ensured not to influence the electromagnetic compatibility test of the whole automobile through two-stage filtering. The charging function module 4 is generally supplied by suppliers, the power levels of the charging function module 4 are different, and the alternating current filtering module 3 and the direct current filtering module 5 are respectively arranged at the two ends of the charging function module 4, so that the charging function module 4 supplied by different suppliers can realize electromagnetic compatibility when in use, and further, the cost is saved.
Specifically, as described above, the charging function module 4 of the external charger includes: the device comprises an AC-DC conversion unit connected with an AC input end, a DC-DC conversion unit connected with a DC output end and a transformer, wherein the AC-DC conversion unit is connected with the DC-DC conversion unit through the transformer.
In an embodiment of the present invention, the charging function module 4 includes: the charging device comprises an alternating current-to-direct current unit, a direct current-to-direct current unit and a transformer, so that the conventional alternating current from a power grid can obtain direct current suitable for charging the electric automobile after passing through the charging function module 4, and the electric automobile can be charged by the external charger.
Referring to fig. 2, preferably, as mentioned above, the ac filtering module 3 includes: a voltage dependent resistor 301, a first bidirectional clamping diode 302, a second bidirectional clamping diode 303, a first differential mode capacitor 304, a second differential mode capacitor 305, a first common mode capacitor group 306, a second common mode capacitor group 307, a first magnetic ring 308 and a second magnetic ring 309;
the voltage dependent resistor 301, the first bidirectional clamping diode 302, the first differential-mode capacitor 304, the first common-mode capacitor group 306, the second differential-mode capacitor 305, the second common-mode capacitor group 307 and the second bidirectional clamping diode 303 are sequentially bridged between the anode and the cathode of a first line along the current input direction, the first line passes through a first magnetic ring 308 and a second magnetic ring 309, the first magnetic ring 308 is sleeved on a line between the first common-mode capacitor group 306 and the second differential-mode capacitor 305, and the second magnetic ring 309 is sleeved on a line between the second differential-mode capacitor 305 and the second common-mode capacitor group 307.
Further, as described above, in the external charger, the first common mode capacitor bank 306 and the second common mode capacitor bank 307 both include: a first common mode capacitance and a second common mode capacitance;
one end of the first common-mode capacitor is connected with the anode of the first circuit, and the other end of the first common-mode capacitor is grounded;
one end of the second common mode capacitor is connected with the negative electrode of the first circuit, and the other end of the second common mode capacitor is grounded.
In a preferred embodiment of the present invention, the ac filtering module 3 is sequentially provided with a voltage dependent resistor 301, a first bidirectional clamping diode 302, a first differential mode capacitor 304, a first common mode capacitor group 306, a first magnetic ring 308, a second differential mode capacitor 305, a second magnetic ring 309, a second common mode capacitor group 307 and a second bidirectional clamping diode 303 along the current input direction, i.e. the direction from the charging plug 1 to the charging function module 4, wherein the voltage dependent resistor 301, the first bidirectional clamping diode 302 and the second bidirectional clamping diode 303 are used for inhibiting the surge, voltage fluctuation and the like of the alternating current transmitted by the charging plug 1, when the voltage exceeds the safe voltage, because the voltage dependent resistor 301 has a slower reaction speed than the first bidirectional clamping diode 302, the first bidirectional clamping diode 302 is instantly conducted at this time, so that the current bypasses and the rear-stage components such as the charging function module 4 and the components in the electric vehicle are protected; after the voltage dependent resistor 301 is turned on in response, a large current flows through the voltage dependent resistor 301, which is beneficial to reducing the turn-on time of the first bidirectional clamping diode 302, and further beneficial to ensuring the service life of the first bidirectional clamping diode 302, the second bidirectional clamping diode 303 can be used as a standby structure of the first bidirectional clamping diode 302, and when the first bidirectional clamping diode 302 fails, the first bidirectional clamping diode 302 is replaced to work, so that the influence of voltage fluctuation on a rear-stage component is avoided, and further the safety of the charging function module 4 and the electric vehicle is ensured. The first differential-mode capacitor 304 and the second differential-mode capacitor 305 perform differential-mode filtering on the current from the power grid to suppress differential-mode electromagnetic interference, and the first common-mode capacitor bank 306, the first magnetic ring 308, the second magnetic ring 309 and the second common-mode capacitor bank 307 perform common-mode filtering on the current from the power grid to suppress common-mode electromagnetic interference, so that conductive electromagnetic interference carried by the current from the power grid is effectively suppressed, the safety of the charging function module 4 and the electric vehicle is ensured, and the conducted emission level of the electric vehicle is improved. The arrangement of the second differential-mode capacitor 305, the second magnetic ring 309 and the second common-mode capacitor 307 enables the ac filtering module 3 to have two-stage filtering, so that the electromagnetic rejection capability of the ac filtering module 3 is enhanced. Alternatively, when the installation space is limited, the second magnetic ring 309 may not be provided.
Preferably, as for the external charger, the model of the voltage dependent resistor 301 is 471K;
the reverse turn-off voltage of the first and second bidirectional clamping diodes 302 and 303 is 308V, the breakdown voltage is 308V, and the clamping voltage is 500V;
the first differential-mode capacitor 304 and the second differential-mode capacitor 305 are 275VAC membrane capacitors with safety level;
the first common-mode capacitor and the second common-mode capacitor are safety-level Y2 capacitors;
the first magnetic ring 308 is a nanocrystalline magnetic ring;
the second magnetic ring 309 is a nickel-zinc-ferrite magnetic ring.
In a preferred embodiment of the present invention, the power grid outputs 220V ac power, so that 471K is selected as the model of the varistor 301, the reverse turn-off voltage of the first bidirectional clamping diode 302 and the second bidirectional clamping diode 303 is 308V, the breakdown voltage is 308V, and the clamping voltage is 500V, so as to avoid damage to the rear-stage device due to excessive voltage while ensuring normal charging; the first differential mode capacitor 304 and the second differential mode capacitor 305 are 275VAC membrane capacitors of safety level, the first common mode capacitor and the second common mode capacitor are Y2 capacitors of safety level, and the factors of service life, installation space, cost and the like are considered while normal filtering is ensured; the first magnetic ring 308 is a nanocrystalline magnetic ring for suppressing electromagnetic interference between 10 mhz and 100 mhz, and the second magnetic ring 309 is a nickel-zinc ferrite magnetic ring for supplementing the filtering capability of the nanocrystalline magnetic ring at a higher frequency, so that the ac filtering module 3 can give consideration to both the filtering capabilities of a low frequency and a higher frequency, and further, the electromagnetic suppression capability of the ac filtering module 3 can be enhanced.
Referring to fig. 3, preferably, as mentioned above, the external charger, the dc filter module 5 includes: a third differential mode capacitor 501, a fourth differential mode capacitor 502, a third common mode capacitor group 503, a fourth common mode capacitor group 504, a third magnetic ring 505 and a fourth magnetic ring 506;
the third differential-mode capacitor 501, the third common-mode capacitor group 503, the fourth differential-mode capacitor 502 and the fourth common-mode capacitor group 504 are sequentially bridged between the anode and the cathode of the second line along the current output direction, the second line passes through the third magnetic ring 505 and the fourth magnetic ring 506, the third magnetic ring 505 is sleeved on the line between the third common-mode capacitor group 503 and the fourth differential-mode capacitor group 502, and the fourth magnetic ring 506 is sleeved on the line between the fourth differential-mode capacitor group 502 and the fourth common-mode capacitor group 504.
Specifically, as described above, the external charger, the third common-mode capacitor bank 503 and the fourth common-mode capacitor bank 504 each include: a third common mode capacitor and a fourth common mode capacitor;
one end of the third common-mode capacitor is connected with the anode of the second circuit, and the other end of the third common-mode capacitor is grounded;
one end of the fourth common mode capacitor is connected with the negative electrode of the second circuit, and the other end of the fourth common mode capacitor is grounded.
In the preferred embodiment of the present invention, the dc filter module 5 is sequentially provided with a third differential mode capacitor 501, a third common mode capacitor set 503, a third magnetic ring 505, a fourth differential mode capacitor 502, a fourth magnetic ring 506 and a fourth common mode capacitor set 504 along the current output direction, i.e. the direction from the charging function module 4 to the dc charging gun 2, wherein, the third differential-mode capacitor 501 and the fourth differential-mode capacitor 502 are used for performing differential-mode filtering, i.e. differential-mode interference rejection, on the direct current converted by the charging function module 4, the third common-mode capacitor bank 503, the fourth common-mode capacitor bank 504, the third magnetic ring 505 and the fourth magnetic ring 506 are used for performing common-mode filtering, i.e. common-mode interference rejection, on the direct current, and the arrangement of the fourth differential-mode capacitor 502, the fourth magnetic loop 506 and the fourth common-mode capacitor bank 504, the whole direct current filter module 5 has two-stage filtering, and the electromagnetic suppression capability of the direct current filter module 5 is enhanced.
Preferably, in the external charger as described above, the third differential capacitor 501 is at least a 305VAC film capacitor of safety level, and the fourth differential capacitor 502 is at least a 275VAC film capacitor of safety level;
the third common-mode capacitor and the fourth common-mode capacitor are safety-level Y2 capacitors or safety-level Y1 capacitors;
the third magnetic ring 505 is a nanocrystalline magnetic ring;
the fourth magnetic ring 506 is a nickel-zinc ferrite magnetic ring.
In a preferred embodiment of the present invention, the output of the charging functional module 4 is 400V dc, and the voltage withstanding values of the components and devices should be considered fully in addition to ensuring normal filtering, so that the third differential capacitor 501 is at least 305VAC film capacitor of safety level and has a capacitance value greater than 1 microfarad, and the fourth differential capacitor 502 is at least 275VAC film capacitor of safety level; the third common-mode capacitor and the fourth common-mode capacitor are a safety class Y2 capacitor or a safety class Y1 capacitor, for example: 305VAC, 10 nanofarads. The third magnetic ring 505 is a nanocrystalline magnetic ring for suppressing electromagnetic interference between 10 mhz and 100 mhz, and the fourth magnetic ring 506 is a nickel-zinc ferrite magnetic ring for supplementing the filtering capability of the nanocrystalline magnetic ring at a higher frequency, so that the ac filtering module 3 can give consideration to both the filtering capabilities of the low frequency and the higher frequency, and further, the electromagnetic suppression capability of the ac filtering module 3 can be enhanced.
Referring to fig. 1, further, the external charger as described above further includes: a housing 6;
the charging function module 4, the alternating current filter module 3 and the direct current filter module 5 are all arranged in the shell 6.
The utility model discloses an in the embodiment, external charging is still including casing 6, and the functional module 4 that just charges, exchange filtering module 3 and direct current filtering module 5 and all set up in casing 6, is favorable to protecting charging functional module 4, exchange filtering module 3 and direct current filtering module 5, is convenient for external transportation and the user of charging machine to take simultaneously.
Optionally, as for the external charger, the housing 6 includes three sub-housings, the charging function module 4, the ac filter module 3 and the dc filter module 5 are respectively disposed in one sub-housing, and the three sub-housings are fixedly connected.
The fixed connection mode includes but not limited to the connection of dismantling such as grafting, spiro union, when guaranteeing external machine of charging use and transportation, owing to reduce cost of maintenance.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an electric automobile's external machine that charges which characterized in that includes:
a charging plug (1) connected to the power grid;
the direct current charging gun (2) is connected with a direct current charging port of the electric automobile; and
the charging function module (4), the alternating current filtering module (3) and the direct current filtering module (5) are arranged between the charging plug (1) and the direct current charging gun (2);
the alternating current input end of the charging function module (4) is connected with the charging plug (1) through the alternating current filtering module (3) and the first line, and the direct current output end of the charging function module (4) is connected with the direct current charging gun (2) through the direct current filtering module (5) and the second line.
2. The external charger according to claim 1, characterized in that said charging function module (4) comprises: the device comprises an alternating current-to-direct current unit connected with the alternating current input end, a direct current-to-direct current unit connected with the direct current output end and a transformer, wherein the alternating current-to-direct current unit is connected with the direct current-to-direct current unit through the transformer.
3. The external charger according to claim 1, characterized in that said ac filtering module (3) comprises: the magnetic circuit comprises a piezoresistor (301), a first bidirectional clamping diode (302), a second bidirectional clamping diode (303), a first differential mode capacitor (304), a second differential mode capacitor (305), a first common mode capacitor group (306), a second common mode capacitor group (307), a first magnetic ring (308) and a second magnetic ring (309);
the voltage dependent resistor (301), the first bidirectional clamping diode (302), the first differential mode capacitor (304), the first common mode capacitor group (306), the second differential mode capacitor (305), the second common mode capacitor group (307) and the second bidirectional clamping diode (303) are sequentially bridged between the anode and the cathode of the first circuit along a current input direction, the first circuit penetrates through the first magnetic ring (308) and the second magnetic ring (309), the first magnetic ring (308) is sleeved on a line between the first common mode capacitor group (306) and the second differential mode capacitor (305), and the second magnetic ring (309) is sleeved on a line between the second differential mode capacitor group (305) and the second common mode capacitor group (307).
4. The external charger according to claim 3, characterized in that said first common-mode capacitor bank (306) and said second common-mode capacitor bank (307) each comprise: a first common mode capacitance and a second common mode capacitance;
one end of the first common-mode capacitor is connected with the anode of the first circuit, and the other end of the first common-mode capacitor is grounded;
one end of the second common mode capacitor is connected with the negative electrode of the first circuit, and the other end of the second common mode capacitor is grounded.
5. The external charger according to claim 4, characterised in that said varistor (301) is of type 471K;
the reverse turn-off voltage of the first bidirectional clamping diode (302) and the second bidirectional clamping diode (303) is 308V, the breakdown voltage is 308V, and the clamping voltage is 500V;
the first differential mode capacitor (304) and the second differential mode capacitor (305) are 275VAC membrane capacitors of safety level;
the first common-mode capacitor and the second common-mode capacitor are safety-level Y2 capacitors;
the first magnetic ring (308) is a nanocrystalline magnetic ring;
the second magnetic ring (309) is a nickel-zinc ferrite magnetic ring.
6. The external charger according to claim 1, characterized in that said direct current filtering module (5) comprises: a third differential mode capacitor (501), a fourth differential mode capacitor (502), a third common mode capacitor group (503), a fourth common mode capacitor group (504), a third magnetic ring (505) and a fourth magnetic ring (506);
the third differential mode capacitor (501), the third common mode capacitor bank (503), the fourth differential mode capacitor (502) and the fourth common mode capacitor bank (504) are sequentially bridged between the anode and the cathode of the second circuit along the current output direction, the second circuit penetrates through the third magnetic ring (505) and the fourth magnetic ring (506), the third magnetic ring (505) is sleeved on a circuit between the third common mode capacitor bank (503) and the fourth differential mode capacitor (502), and the fourth magnetic ring (506) is sleeved on a circuit between the fourth differential mode capacitor (502) and the fourth common mode capacitor bank (504).
7. The external charger according to claim 6, characterized in that said third common-mode capacitor bank (503) and said fourth common-mode capacitor bank (504) each comprise: a third common mode capacitor and a fourth common mode capacitor;
one end of the third common-mode capacitor is connected with the anode of the second line, and the other end of the third common-mode capacitor is grounded;
one end of the fourth common-mode capacitor is connected with the negative electrode of the second circuit, and the other end of the fourth common-mode capacitor is grounded.
8. The external charger according to claim 7, characterized in that,
the third differential mode capacitor (501) is at least a 305VAC membrane capacitor of safety level, and the fourth differential mode capacitor (502) is at least a 275VAC membrane capacitor of safety level;
the third common-mode capacitor and the fourth common-mode capacitor are safety-level Y2 capacitors or safety-level Y1 capacitors;
the third magnetic ring (505) is a nanocrystalline magnetic ring;
the fourth magnetic ring (506) is a nickel-zinc ferrite magnetic ring.
9. The external charger according to claim 1, characterized by further comprising: a housing (6);
the charging function module (4), the alternating current filtering module (3) and the direct current filtering module (5) are all arranged in the shell (6).
10. The external charger according to claim 9, characterised in that said casing (6) comprises: the charging function module (4), the alternating current filtering module (3) and the direct current filtering module (5) are respectively arranged in one of the sub-shells, and the three sub-shells are fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020190686.6U CN211592276U (en) | 2020-02-20 | 2020-02-20 | External charger of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020190686.6U CN211592276U (en) | 2020-02-20 | 2020-02-20 | External charger of electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN211592276U true CN211592276U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020190686.6U Active CN211592276U (en) | 2020-02-20 | 2020-02-20 | External charger of electric automobile |
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| Country | Link |
|---|---|
| CN (1) | CN211592276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113246764A (en) * | 2021-05-12 | 2021-08-13 | 美达电器(重庆)有限公司 | Charging machine |
| CN113650501A (en) * | 2021-09-16 | 2021-11-16 | 广州小鹏汽车科技有限公司 | High-voltage system and new energy automobile |
| CN114520617A (en) * | 2020-11-20 | 2022-05-20 | 上海汽车电驱动有限公司 | Six-phase motor drive controller for electric automobile |
-
2020
- 2020-02-20 CN CN202020190686.6U patent/CN211592276U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114520617A (en) * | 2020-11-20 | 2022-05-20 | 上海汽车电驱动有限公司 | Six-phase motor drive controller for electric automobile |
| CN113246764A (en) * | 2021-05-12 | 2021-08-13 | 美达电器(重庆)有限公司 | Charging machine |
| CN113650501A (en) * | 2021-09-16 | 2021-11-16 | 广州小鹏汽车科技有限公司 | High-voltage system and new energy automobile |
| CN113650501B (en) * | 2021-09-16 | 2023-08-29 | 广州小鹏汽车科技有限公司 | High-voltage system and new energy automobile |
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