CN215244353U - Pre-charging circuit, controller and electric automobile - Google Patents
Pre-charging circuit, controller and electric automobile Download PDFInfo
- Publication number
- CN215244353U CN215244353U CN202120484694.6U CN202120484694U CN215244353U CN 215244353 U CN215244353 U CN 215244353U CN 202120484694 U CN202120484694 U CN 202120484694U CN 215244353 U CN215244353 U CN 215244353U
- Authority
- CN
- China
- Prior art keywords
- charging
- charge
- circuit
- branch
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a pre-charge circuit, controller and electric automobile, including input line, m pre-charge branch circuits, n pre-charge switch branch circuits, n main switch branch circuits and n output lines for connecting energy storage equipment, m and n are positive integers, and m is less than n; the first end of each main switch branch is connected with the input line, and the second end of each main switch branch is connected with each output line respectively; the first end of each pre-charging branch is connected with the input line, the second end of each pre-charging branch is connected with the first end of each pre-charging switch branch, and the second end of each pre-charging switch branch is connected with each output line; the connection of the pre-charging branch and the pre-charging switch branch realizes the power-on buffering of the energy storage equipment connected with each output line. The utility model discloses a to the multiplexing of pre-charging device, can effectively reduce device quantity in many pre-charging return circuits products to reduce the point of failure, reduce product cost.
Description
Technical Field
The utility model belongs to the technical field of new energy automobile and specifically relates to a pre-charging circuit, controller and electric automobile are related to.
Background
An integrated controller and other capacitive loads of a new energy automobile are in a short-circuit mode at the moment of power-on, and under the condition that a pre-charging (buffering) loop is not arranged, current overshoot occurs at the moment of power-on, so that the problems of adhesion of a contactor in the loop, mistaken fuse of a fuse and the like are caused.
At present, in an existing solution, each main contactor is added with a pre-charging (buffering) circuit connected in parallel with the main contactor, each pre-charging (buffering) circuit includes three power devices, namely a buffering contactor, a pre-charging resistor and an anti-reverse diode, and after buffering is finished, the pre-charging (buffering) circuit is bypassed through the suction of the main contactors connected in parallel, so that the pre-charging contactor is disconnected and exits from a working state. However, the existing new energy vehicle generally includes a plurality of capacitive loads, each capacitive load corresponds to one pre-charge (snubber) circuit, and therefore a plurality of pre-charge (snubber) circuits need to be provided, and each pre-charge (snubber) circuit is designed independently, and a large number of main power devices are required, which is high in cost, so that the existing technical solution has no market competitiveness under the condition that the cost is core competitiveness.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a pre-charge circuit, controller and electric automobile can solve too much, the high scheduling problem of manufacturing cost of electron device under the more condition of capacitive load (energy storage equipment) in the automobile system.
In a first aspect, an embodiment of the present invention provides a pre-charge circuit, which includes an input line, m pre-charge branches, n pre-charge switch branches, n main switch branches, and n output lines for connecting an energy storage device, where m and n are positive integers, and m is less than n;
the first end of each main switch branch is connected with the input line, and the second end of each main switch branch is connected with each output line respectively; the first end of each pre-charging branch circuit is connected with the input line, the second end of each pre-charging branch circuit is respectively connected with the first end of each pre-charging switch branch circuit, and the second end of each pre-charging switch branch circuit is respectively connected with each output line; the pre-charging circuit realizes the power-on buffering of each energy storage device through the pre-charging branch and the pre-charging switch branch.
The utility model discloses pre-charge circuit has following beneficial effect at least: the utility model discloses the utilization is through reducing the quantity of pre-charge branch road, effectively multiplexing to pre-charge circuit key device promptly, in the product of multi-capacitive load (energy storage equipment), can effectively reduce device quantity to reduce the point of failure, reduce product cost, promote the competitiveness of product.
Further, each of the main switching branches includes a main switching element, a first end of the main switching element is connected to the input line, and a second end of the main switching element is connected to the output line.
In the pre-charging circuit according to an embodiment of the present invention, each of the pre-charging branches includes an anti-reverse diode and a pre-charging resistor, and each of the pre-charging switching branches includes a pre-charging switching element;
the positive electrode of the anti-reverse diode is electrically connected with the input line, the negative electrode of the anti-reverse diode is electrically connected with the first end of the pre-charging resistor, and the second end of the pre-charging resistor is electrically connected with the first end of the pre-charging switch branch.
In the pre-charging circuit according to an embodiment of the present invention, each of the pre-charging branches is composed of a pre-charging resistor, and each of the pre-charging switching branches includes an anti-reverse diode and a pre-charging switching element:
the first end of the pre-charging resistor is connected with the input line, the second end of the pre-charging resistor is connected with the anode of the anti-reverse diode, the cathode of the anti-reverse diode is connected with the first end of the pre-charging switch element, and the second end of the pre-charging switch element is connected with the energy storage device.
In the pre-charging circuit according to an embodiment of the present invention, each of the pre-charging branches is formed by an anti-reverse diode, and each of the pre-charging switch branches includes a pre-charging resistor and a pre-charging switch element:
the positive electrode of the anti-reverse diode is connected with the input line, the negative electrode of the anti-reverse diode is connected with the first end of the pre-charging resistor, the second end of the pre-charging resistor is connected with the first end of the pre-charging switch element, and the second end of the pre-charging switch element is connected with the energy storage device.
In an embodiment of the present invention, the number of the precharge branches is one.
In the pre-charging circuit according to an embodiment of the present invention, the first switching element in the main switch branch is a contactor or a semiconductor switch tube.
In the pre-charging circuit according to an embodiment of the present invention, the second switching element in the pre-charging switch branch is a contactor or a semiconductor switch tube.
In a second aspect, an embodiment of the present invention provides a controller, including a main control circuit, a plurality of energy storage devices, and the pre-charging circuit according to any of the above embodiments, wherein the main control circuit is connected to a switching element of the pre-charging circuit and outputs a signal for turning on or off the switching element, the plurality of energy storage devices correspond to the output lines, and each of the output lines is connected to one of the energy storage devices.
In a third aspect, an embodiment of the present invention provides an electric vehicle, including a power battery, the pre-charging circuit as in any one of the above embodiments, and a capacitor corresponding to an output line, where the input circuit is connected to the power battery, and the output line is connected to the corresponding capacitor.
Drawings
Fig. 1 is a circuit diagram of an embodiment of a pre-charge circuit according to the present invention;
FIG. 2 is a circuit diagram of another embodiment of a pre-charge circuit according to the present invention;
FIG. 3 is a circuit diagram of another embodiment of a pre-charge circuit according to the present invention;
FIG. 4 is a circuit diagram of another embodiment of a pre-charge circuit according to the present invention;
fig. 5 is a circuit diagram of another embodiment of a pre-charge circuit according to the present invention.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
The utility model discloses a pre-charging circuit can be applied to new energy automobile integrated controller, high voltage distribution box etc. and have the occasion of capacitive load. The pre-charging circuit of the embodiment comprises an input line, m pre-charging branch circuits, n pre-charging switch branch circuits, n main switch branch circuits and n output lines used for connecting energy storage equipment, wherein m and n are positive integers, and m is smaller than n. The first end of each main switch branch is connected with the input line, and the second end of each main switch branch is connected with each output line respectively; the first end of each pre-charging branch is connected with the input line, the second end of each pre-charging branch is connected with the first end of each pre-charging switch branch, and the second end of each pre-charging switch branch is connected with each output line; the pre-charging circuit realizes the power-on buffering of each energy storage device through the pre-charging branch and the pre-charging switch branch.
Referring to fig. 1, in the pre-charging circuit according to an embodiment of the present invention, there are one pre-charging branch, two pre-charging switch branches and two main switch branches, i.e., m ═ 1 and n ═ 2 in this embodiment, and two energy storage devices (i.e., capacitive loads C1 and C2) are connected to the pre-charging circuit. Specifically, the precharge circuit 10 of the present embodiment includes an input line IN1, a precharge branch 11, two precharge switching branches respectively formed by the second switching element KM2 and the fourth switching element KM4, two main switching branches respectively formed by the first switching element KM1 and the third switching element KM3, and two output lines OUT1 and OUT 2. The input line IN1 of the pre-charging circuit 10 is electrically connected to the P pole of the battery 20, and the two output lines OUT1 and OUT2 are respectively connected to a capacitive load C1 and C2; the input line IN1 is electrically connected to the first output line OUT1 and the second output line OUT2 through the first main switch branch KM1 and the second main switch branch KM3, respectively; the pre-charging branch 11 is connected in series between the input line and the pre-charging switching branch, and the pre-charging branch 11 is electrically connected to the first output line OUT1 and the second output line OUT2 through the second switching element KM2 and the fourth switching element KM4, respectively, wherein the pre-charging branch 11 includes a diode D1 and a pre-charging resistor R1.
When the circuit is powered on, the second switching element KM2 and the fourth switching element KM4 of the two pre-switching branches are attracted through the main control loop, the capacitive loads C1 and C2 start to charge, the terminal voltages of the capacitive loads C1 and C2 are increased, when the voltage difference between the terminal voltages of the capacitive loads C1 and C2 and the voltage difference between the terminal voltages of the first switching element KM1 and the front terminal voltage of the third switching element KM3 are small enough, the first switching element KM1 and the third switching element KM3 are attracted through the main control loop, the second switching element KM2 and the fourth switching element KM4 of the pre-switching branches are disconnected after a preset time, and the pre-charging process is finished. In practical applications, the main control circuit may be integrated into the pre-charge circuit, or may be independent of the pre-charge circuit, and only outputs the control voltage to the two pre-charge switch branches and the two main switch branches.
In practical application, when only one capacitive load C1 needs to be powered on, the second switch element KM2 may be pulled in by the main control loop (the fourth switch element KM4 is kept off), the capacitive load C1 starts to be charged and the terminal voltage thereof rises, when the voltage difference between the terminal voltage of the capacitive load C1 and the front terminal voltage of the first switch element KM1 is small enough, the first switch element KM1 is pulled in by the main control loop (the third switch element KM3 is kept off), and the second switch element KM2 is turned off after a predetermined time, that is, the precharge process is ended.
The utility model discloses in the pre-charge circuit, only used one to prevent reverse diode and a pre-charge resistance, compare with prior art scheme and save the hardware cost to capacitive load in the product is more, and the electron device of saving is also more. The utility model discloses a branch road charges in advance can effectively reduce device quantity in the product of many capacitive loads to reduce the point of failure, reduce product cost, promote the competitiveness of product.
In one embodiment of the pre-charge circuit of the present invention, each pre-charge branch comprises an anti-reverse diode and a pre-charge resistor, and each pre-charge switch branch comprises a pre-charge switch element. The positive electrode of the anti-reverse diode is electrically connected with the input line, the negative electrode of the anti-reverse diode is electrically connected with the first end of the pre-charging resistor, and the second end of the pre-charging resistor is electrically connected with the first end of the pre-charging switch branch circuit.
Referring specifically to fig. 2, the precharge circuit 10 according to the embodiment of the present invention includes an input line IN1, a precharge branch, n precharge switch branches, n main switch branches, and n output lines for connecting different capacitive loads (energy storage devices). The pre-charging branch is composed of an anti-reverse diode D1 and a pre-charging resistor R1; the n pre-charging switch branches are respectively composed of switch elements KM2, KM4, KM6, … … and KM (n + 1); the n main switch branches are respectively composed of main switch elements KM1, KM3, KM5, … … and KMn; the n output lines are OUT1, OUT2, OUT3, … …, OUTn, respectively. As shown IN fig. 2, the positive electrode of the anti-reverse diode D1 is electrically connected to the input line IN1, the negative electrode of the anti-reverse diode D1 is electrically connected to the first end of the pre-charge resistor R1, the second end of the pre-charge resistor R1 is electrically connected to the pre-charge switch branches, and one pre-charge branch is respectively connected to n pre-charge switch branches to implement the power-on buffering of the capacitive load of n output lines.
In the embodiment of the present invention, the battery 20 charges the capacitive loads C1, C2, C3, … …, Cn through the pre-charging circuit 10. When the circuit is powered on, the switching elements of the pre-switching branch are firstly attracted, the terminal voltages of all the switching elements are guided to meet the requirements, then the main switching element is closed, all the capacitive loads C1, C2, C3, … … and Cn are continuously charged, and all the switching elements are switched off after the preset time, namely the pre-charging process is finished. As shown in fig. 2, the pre-charging circuit of the present invention only uses one anti-reverse diode and one pre-charging resistor, if there are n capacitive loads in the product, this embodiment saves n-1 anti-reverse diodes and n-1 pre-charging resistors, and greatly reduces the number of electronic devices under the condition of large value of n. The utility model discloses precharge circuit not only has reduced manufacturing cost effectively through the multiplexing to preventing reverse diode D1 and pre-charge resistance R1, can also reduce the device point of failure, has promoted the competitiveness of product on market.
In another embodiment of the present invention, the precharge circuit further includes a precharge resistor electrically connected between the input line and the precharge branch circuit, and a reverse diode electrically connected between the input line and the precharge branch circuit. The circuit implementation process of the pre-charging circuit according to the embodiment of the present invention is similar to that of the embodiment of fig. 2, and is not repeated here.
In another embodiment of the pre-charge circuit of the present invention, each pre-charge branch is formed by a pre-charge resistor, and each pre-charge switch branch includes an anti-reverse diode and a pre-charge switch element. The first end of the pre-charging resistor is connected with the input line, the second end of the pre-charging resistor is connected with the anode of the anti-reverse diode, the cathode of the anti-reverse diode is connected with the first end of the pre-charging switch element, and the second end of the pre-charging switch element is connected with the energy storage device.
Referring specifically to fig. 3, the precharge circuit according to the embodiment of the present invention includes an input line IN1, a precharge branch, n precharge switch branches, n main switch branches, and n output lines for connecting different capacitive loads. Wherein, the pre-charging branch is composed of a pre-charging resistor R1; the n pre-charging switch branches are respectively composed of switch elements (such as contactors) KM2, KM4, KM6, … …, KM (n +1) and anti-reverse diodes D1, D2, D3, … … and Dn, for example, the anti-reverse diode D1 and the switch element KM2 form a pre-switching branch; the n main switch branches are respectively composed of main switch elements (such as contactors) KM1, KM3, KM5, … … and KMn; the n output lines are OUT1, OUT2, OUT3, … …, OUTn, respectively. As shown in fig. 3, the anodes of the anti-reverse diodes D1, D2, D3, … …, Dn are electrically connected to the first ends of the n pre-charge switch branches, and the cathode of each anti-reverse diode D1, D2, D3, … …, Dn is electrically connected to an output line via a switch element.
In the embodiment of the present invention, the battery 20 charges the capacitive loads C1, C2, C3, … …, Cn through the pre-charging circuit 10. When the circuit is powered on, the switching elements of the pre-switching branch are firstly attracted, the terminal voltages of all the switching elements are guided to meet the requirements, then the main switching element is closed, all the capacitive loads C1, C2, C3, … … and Cn are continuously charged, and all the switching elements are switched off after the preset time, namely the pre-charging process is finished. As shown in fig. 3, the pre-charging circuit of the present invention only uses one pre-charging resistor, if there are n capacitive loads, this embodiment saves n-1 pre-charging resistors, and can reduce the usage of part of the electronic devices under the condition of large value of n. The utility model discloses pre-charge circuit not only has reduced manufacturing cost effectively through the multiplexing to pre-charge resistance R1, can also reduce the device point of failure, has promoted the competitiveness of product on market.
In another embodiment of the pre-charging circuit of the present invention, the positive electrode of the anti-reverse diode is electrically connected to the intermediate potential point through the switching element, and the negative electrode of the anti-reverse diode is electrically connected to an output line. The circuit implementation process of the pre-charging circuit according to the embodiment of the present invention is similar to that of the embodiment of fig. 3, and is not repeated here.
In another embodiment of the pre-charging circuit of the present invention, each pre-charging branch is formed by an anti-reverse diode, and each pre-charging switch branch comprises a pre-charging resistor and a pre-charging switch element; the positive electrode of the anti-reverse diode is connected with the input line, the negative electrode of the anti-reverse diode is connected with the first end of the pre-charging resistor, the second end of the pre-charging resistor is connected with the first end of the pre-charging switch element, and the second end of the pre-charging switch element is connected with the energy storage device.
Referring specifically to fig. 4, the precharge circuit according to the embodiment of the present invention includes an input line IN1, a precharge branch, n precharge switch branches, n main switch branches, and n output lines for connecting different capacitive loads. Wherein the pre-charging branch is composed of an anti-reverse diode D1; the n pre-charging switch branches are respectively composed of switch elements KM2, KM4, KM6, … …, KM (n +1), pre-charging resistors R1, R2, R3, … … and Rn, for example, the pre-charging resistor R1 and the switch element KM2 form a pre-switching branch; the n main switch branches are respectively composed of main switch elements KM1, KM3, KM5, … … and KMn; the n output lines are OUT1, OUT2, OUT3, … …, OUTn, respectively.
In the embodiment of the present invention, the battery 20 charges the capacitive loads C1, C2, C3, … …, Cn through the pre-charging circuit 10. When the circuit is powered on, the switching elements of the pre-switching branch are firstly attracted, the terminal voltages of all the switching elements are guided to meet the requirements, then the main switching element is closed, all the capacitive loads C1, C2, C3, … … and Cn are continuously charged, and all the switching elements are switched off after the preset time, namely the pre-charging process is finished. It can be known from fig. 4 that the pre-charging circuit of the present invention only uses one anti-reverse diode, if there are n capacitive loads in the product, this embodiment saves n-1 anti-reverse diodes, and under the condition that the value of n is large, the use of part of electronic devices can be reduced. The utility model discloses pre-charge circuit not only has reduced manufacturing cost effectively through the multiplexing to preventing reverse diode D1, can also reduce the device point of failure, has promoted the competitiveness of product on market.
In the above embodiments, the switching element in the main switching branch is a contactor or a semiconductor switch tube, and the switching element in the pre-charging switching branch is a contactor or a semiconductor switch tube. The utility model discloses a pre-charging circuit still includes main control circuit, and each contactor or semiconductor switch tube in the pre-charging circuit are switched on or break off by main control circuit control respectively.
Referring specifically to fig. 5, the precharge circuit 10 according to the embodiment of the present invention includes an input line IN1, a precharge branch, n precharge switch branches, n main switch branches, and n output lines for connecting different capacitive loads. The pre-charging branch is composed of an anti-reverse diode D1 and a pre-charging resistor R1. Wherein, part or all of the pre-charging switch branches are respectively composed of semiconductor switch tubes (such as IGBT) KM2, KM4, KM6, … … and KM (n + 1); part of the main switch branches are respectively composed of main semiconductor switch tubes (such as IGBTs) KM1, KM5, … … and KMn; the n output lines are OUT1, OUT2, OUT3, … …, OUTn, respectively. As shown IN fig. 5, the anode of the anti-reverse diode D1 is electrically connected to the input line IN1 through the pre-charge resistor R1, and the cathode of the anti-reverse diode D1 is electrically connected to the pre-charge switch branches, and IN this embodiment, one pre-charge branch is respectively connected to n pre-charge switch branches to implement the power-up buffering of the capacitive load of n output lines.
In the embodiment of the present invention, the battery 20 charges the capacitive loads C1, C2, C3, … …, Cn through the pre-charging circuit 10. When the circuit is powered on, the switching elements of the pre-switching branch are firstly attracted, the terminal voltages of all the switching elements are guided to meet the requirements, then the main switching element is closed, all the capacitive loads C1, C2, C3, … … and Cn are continuously charged, and all the switching elements are switched off after the preset time, namely the pre-charging process is finished. As can be seen from fig. 5, the precharge circuit of the present invention improves the controllability of the main control circuit to the switching element by using the semiconductor switching device as the switching element. The utility model discloses a main control circuit can control each switch element's break-make in a flexible way, to the capacitive load that does not need to charge, will keep the off-state with its switch element who corresponds to can the rational distribution resource, avoid extravagant.
In one embodiment of the present invention, a controller is provided, which includes a main control loop, a plurality of energy storage devices, and a pre-charge circuit as described in the corresponding embodiments of fig. 1-5. The main control loop is connected with the switching element of the pre-charging circuit and outputs a signal for switching on or off the switching element, the plurality of energy storage devices correspond to the output lines, and each output line is connected with one energy storage device.
In an embodiment of the present invention, an electric vehicle is provided, which includes a power battery, a pre-charging circuit corresponding to the embodiment in fig. 1 to 5, and a capacitor corresponding to an output line, wherein the input circuit is connected to the power battery, and the output line is connected to the corresponding capacitor.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A pre-charging circuit is characterized by comprising an input line, m pre-charging branch circuits, n pre-charging switch branch circuits, n main switch branch circuits and n output lines for connecting energy storage equipment, wherein m and n are positive integers, and m is smaller than n;
the first end of each main switch branch is connected with the input line, and the second end of each main switch branch is connected with each output line respectively; the first end of each pre-charging branch circuit is connected with the input line, the second end of each pre-charging branch circuit is respectively connected with the first end of each pre-charging switch branch circuit, and the second end of each pre-charging switch branch circuit is respectively connected with each output line; the pre-charging circuit realizes the power-on buffering of each energy storage device through the pre-charging branch and the pre-charging switch branch.
2. The pre-charge circuit of claim 1, wherein each of the pre-charge branches comprises an anti-reverse diode and a pre-charge resistor, and each of the pre-charge switch branches comprises a pre-charge switch element;
the positive electrode of the anti-reverse diode is connected with the input line, the negative electrode of the anti-reverse diode is connected with the first end of the pre-charging resistor, and the second end of the pre-charging resistor is connected with the first end of the pre-charging switch branch.
3. A pre-charge circuit according to claim 1, wherein each of the pre-charge branches is formed by a pre-charge resistor, and each of the pre-charge switch branches includes an anti-reverse diode and a pre-charge switch element;
the first end of the pre-charging resistor is connected with the input line, the second end of the pre-charging resistor is connected with the anode of the anti-reverse diode, the cathode of the anti-reverse diode is connected with the first end of the pre-charging switch element, and the second end of the pre-charging switch element is connected with the energy storage device.
4. A pre-charge circuit according to claim 1, wherein each of the pre-charge branches is formed by an anti-reverse diode, and each of the pre-charge switch branches includes a pre-charge resistor and a pre-charge switch element;
the positive electrode of the anti-reverse diode is connected with the input line, the negative electrode of the anti-reverse diode is connected with the first end of the pre-charging resistor, the second end of the pre-charging resistor is connected with the first end of the pre-charging switch element, and the second end of the pre-charging switch element is connected with the energy storage device.
5. A pre-charging circuit according to any of claims 1-4, wherein the number of pre-charging branches is one.
6. A pre-charge circuit as claimed in claim 5, wherein each of the main switching branches includes a main switching device, a first terminal of the main switching device is connected to the input line, and a second terminal of the main switching device is connected to the output line.
7. The pre-charge circuit of claim 6, wherein the first switching element in the main switching leg is a contactor or a semiconductor switching tube.
8. The pre-charge circuit of claim 6, wherein the second switching element in the pre-charge switching branch is a contactor or a semiconductor switching tube.
9. A controller comprising a main control circuit, a plurality of energy storage devices and the pre-charge circuit of any of claims 1-8, wherein the main control circuit is connected to the switching elements of the pre-charge circuit and outputs a signal for turning the switching elements on or off, the plurality of energy storage devices correspond to the output lines, and each of the output lines is connected to one of the energy storage devices.
10. An electric vehicle comprising a power battery, a pre-charge circuit as claimed in any one of claims 1 to 8 and a capacitor corresponding to an output line, the input circuit being connected to the power battery and the output line being connected to the corresponding capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120484694.6U CN215244353U (en) | 2021-03-05 | 2021-03-05 | Pre-charging circuit, controller and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120484694.6U CN215244353U (en) | 2021-03-05 | 2021-03-05 | Pre-charging circuit, controller and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215244353U true CN215244353U (en) | 2021-12-21 |
Family
ID=79503961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120484694.6U Active CN215244353U (en) | 2021-03-05 | 2021-03-05 | Pre-charging circuit, controller and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215244353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087062A1 (en) * | 2022-10-26 | 2024-05-02 | 深圳市正浩创新科技股份有限公司 | Power supply circuit, control method for power supply circuit, and energy storage device |
-
2021
- 2021-03-05 CN CN202120484694.6U patent/CN215244353U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087062A1 (en) * | 2022-10-26 | 2024-05-02 | 深圳市正浩创新科技股份有限公司 | Power supply circuit, control method for power supply circuit, and energy storage device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109546672B (en) | Direct current energy consumption device, system and control method | |
| CN202034896U (en) | Switch device circuit | |
| CN215244353U (en) | Pre-charging circuit, controller and electric automobile | |
| CN113741261B (en) | Power-on and power-off control circuit and signal output device | |
| CN105071469A (en) | Solar charging circuit | |
| CN201349143Y (en) | Standby power source control circuit | |
| CN106740195B (en) | Electric automobile charging power supply and method for charging electric automobile | |
| CN207664872U (en) | A kind of novel wide scope input power translation circuit | |
| CN107181305B (en) | Energy storage circuit of single-fire bidirectional intelligent switch | |
| CN103354193A (en) | Relay drive circuit and relay control method | |
| CN217445060U (en) | Bidirectional current-limiting voltage converting circuit for efficient energy storage | |
| CN203151090U (en) | DC load series-parallel switching circuit | |
| CN110971175A (en) | Strong-current electrifying circuit, control method and servo driver | |
| CN203225658U (en) | Self-conduction boost switch power supply | |
| CN213426016U (en) | Short-circuit energy release loop of alternating-current solid-state power controller | |
| CN213484580U (en) | Double-circuit power supply low-power consumption automatic switching circuit | |
| CN211908651U (en) | Black start circuit of energy storage converter | |
| CN112711286B (en) | Voltage regulating circuit, voltage regulating control method, voltage regulating device, storage medium and vehicle | |
| CN203707030U (en) | Magnetic maintaining relay drive circuit | |
| CN102254746B (en) | Electromagnetic relay arc extinguishing circuit | |
| CN212278123U (en) | Boost circuit and device and system thereof | |
| CN110661418A (en) | Buck circuit based on soft switch | |
| CN201016412Y (en) | Electromagnetic valve control circuit for air jet loom | |
| CN109245748A (en) | A kind of power-off self-start circuit | |
| CN205160191U (en) | Automatic switching circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |