CN112615413A - Direct current charging unit and matrix type charging system - Google Patents
Direct current charging unit and matrix type charging system Download PDFInfo
- Publication number
- CN112615413A CN112615413A CN202011583188.9A CN202011583188A CN112615413A CN 112615413 A CN112615413 A CN 112615413A CN 202011583188 A CN202011583188 A CN 202011583188A CN 112615413 A CN112615413 A CN 112615413A
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- China
- Prior art keywords
- charging unit
- latching relay
- magnetic latching
- charging
- box body
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
Abstract
The application discloses direct current charging unit is applied to matrix charging system, includes: the electric box body, the inside of electric box body is provided with the magnetic latching relay, still is provided with the control panel that is used for controlling the magnetic latching relay in the electric box body, still is provided with a plurality of binding post that are used for establishing electric connection with magnetic latching relay and target module of charging on the first lateral wall of electric box body. Obviously, since the magnetic latching relay has a smaller space volume than the dc switching contactor, the occupation of the space volume when the matrix charging system is built can be relatively reduced, and thus the space area occupied by the matrix charging system can be reduced. Correspondingly, the matrix type charging system disclosed by the invention also has the beneficial effects.
Description
Technical Field
The present invention relates to the field of charging technologies, and in particular, to a dc charging unit and a matrix charging system.
Background
The electric automobile has the advantages of energy conservation and environmental protection, so that the electric automobile is widely popularized in the world. At present, in order to solve the problems of large occupied area and low charging power of the direct-current charging pile, in the prior art, a plurality of charging modules are generally built together by using a direct-current switching contactor, so that the charging modules can form a matrix type charging control system. However, since the dc switching contactor has a large volume, a matrix charging system constructed by the dc switching contactor needs to occupy a large space area. For this technical problem, no effective solution is available at present.
Therefore, it is an urgent technical problem to be solved by those skilled in the art how to further reduce the occupied space area of the matrix charging system.
Disclosure of Invention
In view of the above, the present invention provides a dc charging unit and a matrix charging system to reduce the occupied space area of the matrix charging system. The specific scheme is as follows:
a DC charging unit applied to a matrix charging system comprises: the electric box body is internally provided with a magnetic latching relay, a control board for controlling the magnetic latching relay is further arranged in the electric box body, and a plurality of wiring terminals for electrically connecting the magnetic latching relay and the target charging module are further arranged on the first side wall of the electric box body.
Preferably, a discharge resistor for consuming electrical energy is further provided inside the electrical box body.
Preferably, the electrical box body is a detachable electrical box body.
Preferably, a direct current contactor for controlling the on-state or off-state of an electrical line in the electrical box body is further arranged in the electrical box body.
Preferably, the electrical box body is also internally provided with a copper bar for electrically communicating the magnetic latching relay with a target direct-current power supply.
Preferably, the second side wall of the electrical box body is further provided with a heat dissipation hole for dissipating heat of the electronic component in the electrical box body.
Preferably, the control board is further provided with a communication interface for establishing a communication connection between the control board and the target charging module, and the communication interface extends out of the second side wall through an opening provided in the second side wall.
Preferably, the communication interface is specifically a CAN communication interface or an RS485 communication interface.
Preferably, the control board is further provided with a dial switch for address coding of the target charging module.
Correspondingly, the invention also discloses a matrix type charging system which comprises the direct current charging unit.
Therefore, in the invention, when a matrix type charging system needs to be built by using the direct current charging unit, firstly, the magnetic latching relay arranged in the electric box body can be connected with the target charging modules through the wiring terminals arranged on the first side wall of the electric box body, and then, the on-off state of the magnetic latching relay is controlled through the control board in the electric box body, so that the target charging modules can be connected through the magnetic latching relay, and the target charging modules are built into the matrix type charging system. Obviously, since the magnetic latching relay has a smaller space volume than the dc switching contactor, the occupation of the space volume when the matrix charging system is built can be relatively reduced, and thus the space area occupied by the matrix charging system can be reduced. Correspondingly, the matrix type charging system disclosed by the invention also has the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a dc charging unit according to an embodiment of the present invention;
fig. 2 is a structural diagram of another dc charging unit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a structural diagram of a dc charging unit according to an embodiment of the present invention, the dc charging unit includes:
the electric box 11 is provided with a magnetic latching relay 12 inside the electric box 11, a control board 13 for controlling the magnetic latching relay 12 is further arranged inside the electric box 11, and a plurality of wiring terminals 14 for electrically connecting the magnetic latching relay 12 with a target charging module are further arranged on a first side wall 111 of the electric box 11.
In the present embodiment, in order to build up a plurality of target charging modules into one matrix type charging system, first, the magnetic latching relay 12 is provided inside the electric box 11, and the control board 13 for controlling the magnetic latching relay 12 is provided inside the electric box 11, so that the on-state or off-state of the magnetic latching relay 12 is controlled by the control board 13. Thereafter, a plurality of connection terminals 14 for establishing electrical connection of the magnetic latching relay 12 and the target charging module are provided on the first side wall 111 of the electric box body 11.
It is conceivable that, when a plurality of target charging modules are electrically connected to the magnetic latching relay 12 through the connection terminal 14, the plurality of target charging modules are connected by the dc charging unit and are electrically connected to the magnetic latching relay 12, so that the plurality of target charging modules can be built into a matrix charging system. It should be noted that, in practical applications, a plurality of target charging modules are electrically connected to the contacts on the magnetic latching relay 12 through the connection terminals 14.
In addition, since the magnetic latching relay 12 has a smaller space volume than the dc switching contactor, the occupation amount of the dc charging unit to the space and thus the occupation amount of the matrix charging system to the space area can be relatively reduced. In addition, because the magnetic latching relay 12 not only has the advantages of large rated current, low cost and low heat generation, the safety and reliability of the direct current charging unit in the using process can be relatively improved, but also because of the magnetic latching characteristic of the magnetic latching relay 12, the magnetic latching relay 12 can be relatively prevented from burning the direct current charging unit due to power failure.
In addition, it should be noted that, since the magnetic latching relay 12 cannot be switched on and needs the support of the voltage regulation control technology, the high-power dc charging system can provide various required power outputs by regulating the number of target charging modules according to different requirements. In addition, in the operation process of the dc charging unit, the control board 13 may also comprehensively consider factors such as the operation time, the starting frequency, and the operation environment of each target charging module, and dynamically allocate the charging power of each target charging module based on the wear leveling algorithm, so as to ensure the balance of each target charging module in the charging process, and avoid that the service life of the target charging module is affected due to the severe loss of some target charging modules.
It can be seen that, in this embodiment, when a matrix charging system needs to be built by using the dc charging unit, the magnetic latching relay arranged inside the electrical box may be connected to a plurality of target charging modules through the plurality of connection terminals arranged on the first side wall of the electrical box, and then the on-off state of the magnetic latching relay is controlled by the control board inside the electrical box, so that the plurality of target charging modules may be connected by the magnetic latching relay, and thus the plurality of target charging modules are built into one matrix charging system. Obviously, since the magnetic latching relay has a smaller space volume than the dc switching contactor, the occupation of the space volume when the matrix charging system is built can be relatively reduced, and thus the space area occupied by the matrix charging system can be reduced.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and fig. 2 is a structural diagram of a dc charging unit according to an embodiment of the present invention. Specifically, the inside of the electric box 11 is further provided with a discharge resistor 16 for consuming electric energy.
It can be thought that the dc charging unit must generate some charge energy in the electrical box 11 during the use process, which brings a certain safety hazard to the dc charging unit during the subsequent use process. Therefore, in the present embodiment, in order to avoid unnecessary equipment damage or casualties caused by the charge energy stored in the electrical box 11, a discharging resistor 16 for consuming the electrical energy is further disposed in the electrical box 11, so that after the dc charging unit is used, the charge energy stored in the electrical box 11 can be released by using the discharging resistor 16, and thus, the safety and reliability of the dc charging unit during the use process can be ensured.
Therefore, by the technical scheme provided by the embodiment, the overall reliability of the direct current charging unit in the using process can be further ensured.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, and specifically, the electrical box 11 is a detachable electrical box.
It can be understood that some faults inevitably occur in the use process of the dc charging unit, so in this embodiment, the electrical box body 11 is configured to be a detachable electrical box body for facilitating the maintenance of the dc charging unit by the worker. Specifically, in practical applications, the side walls of the electrical box 11 may be connected by bolts and nuts, or the side walls of the electrical box 11 may be connected by buckles, and this connection structure is a content known to those skilled in the art, so in this embodiment, the detachable manner of the electrical box 11 is not described in detail.
Therefore, by the technical scheme provided by the embodiment, the user experience of people in the process of using the direct current charging unit can be further improved.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and specifically, a dc contactor 17 for controlling the on-state or off-state of the electrical circuit in the electrical box 11 is further disposed inside the electrical box 11.
In the present embodiment, in order to further ensure the safety of the dc charging unit during use, a dc contactor 17 for controlling the on-state or off-state of the electric lines in the electric box 11 is further provided inside the electric box 11. That is, the on/off state of the entire dc circuit in the electric box 11 is controlled by providing the dc contactor 17 in the electric box 11, and thus the dc contactor 17 corresponds to a master control gate of the electric box 11.
In other words, if other electronic components in the electric box 11 are in the on state and the dc contactor 17 is in the off state, the dc charging unit cannot normally operate, which significantly improves the safety of the dc charging unit during use. In addition, in the present embodiment, a bleed-off relay 26 is further provided beside the dc contactor 17 to assist the work flow of the dc contactor 17.
Therefore, by the technical scheme provided by the embodiment, the overall reliability of the direct current charging unit in the using process can be further ensured.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and specifically, the electrical box 11 is further provided with a copper bar 18 for electrically connecting the magnetic latching relay 12 with the target dc power supply.
It is conceivable that if the magnetic latching relay 12 in the electric box 11 is required to be continuously in the operating state, an external target dc power supply is required to supply power to the magnetic latching relay 12, so in the present embodiment, a copper bar 18 for electrically connecting the magnetic latching relay 12 with the target dc power supply is also provided in the electric box 11. In addition, in the present embodiment, in order to ensure the safety of the magnetic latching relay 12 during operation, a shunt 19 for shunting current in the electrical box 11 is further provided on the copper bar 18.
In addition, in this embodiment, the first copper bar 181 and the second copper bar 182 on the copper bar 18 may be fixedly connected in the electrical box 11 through one dc contactor 17, and the third copper bar 183 and the fourth copper bar 184 on the copper bar 18 may be fixed in the electrical box through another dc contactor 17, so as to implement conduction of the dc contactor 17.
Therefore, the technical scheme provided by the embodiment can further ensure the overall reliability of the direct current charging unit in the operation process.
Based on the above embodiments, the technical solution is further described and optimized in this embodiment, please refer to fig. 2, specifically, the second sidewall 112 of the electrical box 11 is further provided with a heat dissipation hole 20 for dissipating heat of the electronic component inside the electrical box 11.
It can be understood that, during the operation of the dc charging unit, each electronic component inside the electric box 11 inevitably emits heat, if the temperature inside the electric box 11 is too high, the connecting wires inside the electric box 11 may be burned out, or the electric components inside the electric box 11 may be broken or damaged. Therefore, in the present embodiment, a heat dissipation hole 20 is further provided on the second side wall 112 of the electrical box body 11, so as to dissipate heat inside the electrical box body 11 through the heat dissipation hole 20.
Specifically, the heat dissipation hole 20 may be provided in a circular shape, a square shape, or the like. In addition, in practical application, the heat dissipation holes 20 may be disposed on other sidewalls of the electrical box 11 according to different practical situations, so as to improve the heat dissipation effect of the dc charging unit in the using process.
Therefore, the technical scheme provided by the embodiment can further ensure the safety and reliability of the direct current charging unit in the operation process.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, specifically, the control board 13 is further provided with a communication interface 21 for establishing a communication connection between the control board 13 and the target charging module, and the communication interface 21 extends out of the second sidewall 112 through an opening provided on the second sidewall 112.
In this embodiment, in order to enable the control board 13 to establish a communication connection with the target charging module, a communication interface 21 for establishing a communication connection between the control board 13 and the target charging module is further disposed on the control board, and the communication interface 21 further extends out of the second sidewall 112 through an opening disposed on the second sidewall 112 on the electrical box 11, so that the control board 13 can obtain the specific power operation condition of the target charging module through the communication interface 21, so that the control board 13 can control the operation state of the target charging module and integrally regulate and control the charging state of the matrix type charging system.
In addition, in practical application, a control interface 22 for communicating with peripheral communication equipment, a voltage and current collecting interface 23 for collecting voltage and current on the control board 13 and a power interface 24 for establishing connection with an external power supply can be further arranged on the control board 13, so as to further improve the functional requirements of the direct current charging unit.
Therefore, the technical scheme provided by the embodiment can further ensure the overall reliability of the direct current charging unit in the operation process.
As a preferred embodiment, the communication interface 21 is specifically a CAN communication interface or an RS485 communication interface.
Specifically, in this embodiment, the communication interface 21 may be set as a CAN communication interface, that is, the target charging module and the control board 13 are connected through a CAN bus, because the CAN bus has the advantages of fast transmission speed and stable and reliable transmission performance, and after each target charging module and the control board 13 are connected through the CAN bus, it is equivalent to that a small local area network is established in the dc charging unit, so that the communication processes between the target charging modules and the control board 13 are independent and independent of each other.
Or, in practical application, the communication interface 21 may be set as an RS485 communication interface, that is, the control board 13 and the target charging module are connected in communication through the RS485, because the RS485 not only can stably transmit data, but also the RS485 has good anti-noise interference capability. Therefore, when the RS485 is used to establish communication connection between the target charging module and the control board 13, the interference between the target charging modules during data transmission can be avoided, and the stability of the target charging module and the control board 13 during data transmission can be further ensured.
Therefore, the technical scheme provided by the embodiment can relatively ensure the stability and reliability of each target charging module in the data transmission process.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and specifically, the control board 13 is further provided with a dial switch 25 for performing address coding on the target charging module.
It can be understood that the number of target charging modules in the matrix charging system is large, and therefore, in practical applications, in order to ensure the overall efficiency of the output power of the matrix charging system, the charging power of each target charging module needs to be integrally regulated.
Therefore, in this embodiment, in order to ensure that the dc charging unit can more accurately regulate and control the charging state of the target charging module in the using process, the dial switch 25 for encoding the address of the target charging module is further disposed on the control board 13, so that the worker can encode the address of the target charging module through the dial switch 25, and accordingly, the power adjustment process of the target charging module can be more orderly and efficient.
In addition, in practical application, the dial switch 25 can extend out of the second side wall 112 through an opening formed in the second side wall 112 of the electrical box body 11, so that an operator can manually code the address of the target charging module through the dial switch 25 outside the electrical box body 11, and the use experience of the operator in the process of using the direct-current charging unit is improved.
Obviously, by the technical scheme provided by the embodiment, the overall reliability of the direct current charging unit in the process of adjusting the charging power of the target charging module can be further ensured.
Correspondingly, the embodiment of the invention also discloses a matrix type charging system which comprises the direct current charging unit disclosed in the foregoing.
The matrix charging system provided by the embodiment of the invention has the beneficial effects of the DC charging unit disclosed above.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. Finally, it should also be 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, such that a process, method, article, or dc charging unit that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or dc charging unit. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or dc charging unit that comprises the element.
The dc charging unit and the matrix charging system provided by the present invention are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A DC charging unit, applied to a matrix charging system, comprises: the electric box body is internally provided with a magnetic latching relay, a control board for controlling the magnetic latching relay is further arranged in the electric box body, and a plurality of wiring terminals for electrically connecting the magnetic latching relay and the target charging module are further arranged on the first side wall of the electric box body.
2. The direct current charging unit according to claim 1, wherein a discharge resistor for consuming electrical energy is further provided inside the electric box body.
3. The dc charging unit of claim 1, wherein the electrical enclosure is a removable electrical enclosure.
4. The dc charging unit according to claim 1, wherein the inside of the electrical box is further provided with a dc contactor for controlling a conducting state or a disconnecting state of an electrical line in the electrical box.
5. The dc charging unit of claim 1, wherein a copper bar is further disposed in the electrical box for electrically connecting the magnetic latching relay to a target dc power source.
6. The direct current charging unit according to claim 1, wherein a heat dissipation hole for dissipating heat of electronic components inside the electrical box is further disposed on the second side wall of the electrical box.
7. The dc charging unit of claim 6, wherein the control board further comprises a communication interface for communicatively connecting the control board to the target charging module, and wherein the communication interface extends out of the second sidewall through an opening formed in the second sidewall.
8. The direct current charging unit according to claim 7, wherein the communication interface is in particular a CAN communication interface or an RS485 communication interface.
9. The direct current charging unit according to any one of claims 1 to 8, wherein a dial switch for address coding the target charging module is further disposed on the control board.
10. A matrix charging system comprising a dc charging unit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011583188.9A CN112615413A (en) | 2020-12-28 | 2020-12-28 | Direct current charging unit and matrix type charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011583188.9A CN112615413A (en) | 2020-12-28 | 2020-12-28 | Direct current charging unit and matrix type charging system |
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| Publication Number | Publication Date |
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| CN112615413A true CN112615413A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011583188.9A Pending CN112615413A (en) | 2020-12-28 | 2020-12-28 | Direct current charging unit and matrix type charging system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205871777U (en) * | 2016-08-04 | 2017-01-11 | 深圳市辉腾创新科技有限公司 | Fill SDD control unit for electric pile |
| CN107627888A (en) * | 2017-10-12 | 2018-01-26 | 上海玖行能源科技有限公司 | An a kind of machine six fills split type direct current stake power distribution unit |
| WO2018064861A1 (en) * | 2016-10-09 | 2018-04-12 | 福建网能科技开发有限责任公司 | Dual-connector electric car direct current charging pile |
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2020
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|---|---|---|---|---|
| CN205871777U (en) * | 2016-08-04 | 2017-01-11 | 深圳市辉腾创新科技有限公司 | Fill SDD control unit for electric pile |
| WO2018064861A1 (en) * | 2016-10-09 | 2018-04-12 | 福建网能科技开发有限责任公司 | Dual-connector electric car direct current charging pile |
| CN107627888A (en) * | 2017-10-12 | 2018-01-26 | 上海玖行能源科技有限公司 | An a kind of machine six fills split type direct current stake power distribution unit |
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Application publication date: 20210406 |