CN209938329U - Novel power control box with time delay protection - Google Patents
Novel power control box with time delay protection Download PDFInfo
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- CN209938329U CN209938329U CN201920466864.0U CN201920466864U CN209938329U CN 209938329 U CN209938329 U CN 209938329U CN 201920466864 U CN201920466864 U CN 201920466864U CN 209938329 U CN209938329 U CN 209938329U
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Abstract
The utility model discloses a novel power control box with time-delay protection, which comprises a power control box body and a power control circuit module thereof, wherein the power control circuit module is provided with a plug-in sheet type fuse, a plate type fuse, two large-current relays, a plurality of small-current relays and a plurality of conductive copper bars; two heavy current relays, a plurality of small current relays, a plurality of plug-in sheet type fuses and a plate type fuse are all arranged on the front side of a power supply control bottom box, the plug-in sheet type fuses are provided with LED lamps for detecting the on-off of the fuses, conductive copper arrangement is arranged at the back position of the control bottom box, a whole vehicle storage battery and a time delay charging protection circuit module are connected through a conductive copper bar, and the heavy current relays are arranged in a charging loop of the control circuit module. Better control the extension effect state of charging, more do benefit to and guarantee battery charge state.
Description
Technical Field
The utility model relates to a power control box especially relates to a power control box who uses in transportation or car electricity.
Background
With the increasing popularization of new energy automobiles, the new energy automobiles become indispensable transportation tools for people to go out and travel, and the power distribution system of the new energy automobiles is developed in an integration direction. The power supply control box is an important component of a new energy automobile power distribution system. The existing new energy automobile power supply control box is not beneficial to controlling the on-off of a storage battery charging loop, and the service life of a large-current relay of the storage battery charging loop cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current new energy automobile power control box and have the break-make that is unfavorable for control battery charging circuit, unable guarantee battery charging circuit heavy current relay's life-span, be unfavorable for current situations such as better assurance battery charge state and the break-make state that a better control battery charging circuit provided, more do benefit to the novel power control box that has time delay protection who guarantees battery charge state.
The utility model discloses a solve the concrete technical scheme that above-mentioned technical problem adopted and be: the utility model provides a novel power control box with time delay protection, includes power control box body and power control circuit module, its characterized in that: the power supply control circuit module is provided with a plug-in sheet type fuse, a plate type fuse, two low-voltage large-current relays, a plurality of small-current relays and a plurality of conductive copper bars; two low-voltage large-current relays, a plurality of small-current relays, a plug-in sheet type fuse and a plate type fuse are all arranged on the front side of a power supply control bottom box, the plug-in sheet type fuse is provided with an LED lamp for detecting the on-off of the fuse, a conductive copper arrangement is arranged at the back side position of the control bottom box and is connected with a storage battery of the whole vehicle and/or a DC/DC voltage reduction power supply module input from the storage battery through a conductive copper bar, and the low-voltage large-current relays are arranged in a charging loop with a control circuit; relay coils of a plurality of small current relays are arranged in a time-delay charging protection circuit module, a power input end of the time-delay charging protection circuit module is connected with an auxiliary input power supply of a charging pile, and relay normally open contacts of the small current relays are connected with a first low-voltage large-current relay control coil in two low-voltage large-current relays in parallel; and two ends of a normally open contact of the second low-voltage large-current relay are respectively connected in series with a plug-in fuse and a plate fuse to serve as a main switch of a power supply of the whole vehicle. The on-off state of the storage battery charging loop is better controlled, the state of the storage battery after being fully charged is better guaranteed, the working stability and the reliability of the large-current relay and the conductive copper bar for charging the storage battery are improved, the charging safety and the charging stability of the charging gun after being pulled out are improved, and the damage to the storage battery and the controller box is reduced.
Preferably, the load operating current of the low-voltage high-current relay is 30A-200A. The use control effectiveness of the control box is improved.
Preferably, the load operating current of the low-current relay is 5 to 25A. The whole space use size of the control box is reduced under the condition of meeting work use requirements, and the space use efficiency is improved.
Preferably, the power control circuit module adopts wide voltage power input, and the power input of wide voltage power input is DC9 ~ 30V, improves the power voltage use adaptation protectiveness to new and old electric pile, prevents to fill the mixed use of electric pile and cause the damage to the relay because of new and old.
Preferably, the power control circuit module is internally provided with a time-delay charging protection circuit module, and the time-delay disconnection of the power supply of the battery management system BMS by the power control circuit module after the charging gun is unplugged is realized through the time-delay protection circuit module, so that the archiving record of the battery management system BMS on the charging state of the high-voltage battery is ensured.
Preferably, the two low-voltage high-current relays are arranged in the power control box body in parallel and are in a local distribution structure on the same side, so that the reasonable, reliable and effective spatial layout of the power control box is improved.
Preferably, the control circuit integrated PCB circuit board arranged in the power control circuit module is arranged at the position of the back face of the control bottom box in the power control box body, and is arranged at the position below the two low-voltage heavy-current relays. The space layout reasonable effectiveness of the power supply control box is improved.
Preferably, the time-delay charging protection circuit module comprises a 10 th diode, a 1 st electrolytic capacitor, a 5 th resistor, a 11 th diode, a 6 th resistor, a 4 th capacitor, a 1 st triode, a 2 nd triode, a 1 st voltage regulator tube, a 12 th diode, a small current relay and an RC series circuit, wherein the positive electrode of the 10 th diode is electrically connected with the positive electrode of the auxiliary input power supply of the charging pile, the 10 th diode is electrically connected with the negative electrode of the auxiliary input power supply of the charging pile after being connected with the 1 st electrolytic capacitor in series, the negative electrode of the 10 th diode is electrically connected with the collecting electrodes of the 1 st triode and the 2 nd triode respectively after being connected with the 5 th resistor and the 11 th diode in series in sequence, the negative electrode of the 11 th diode is electrically connected with the base electrode of the 1 st triode after being connected with the 6 th resistor in series, the emitting electrode of the 1 st, the positive pole of the 1 st voltage-regulator tube is respectively electrically connected with the positive pole of the 12 th diode and the other end of the 4 th capacitor, the negative pole of the 12 th diode is electrically connected with the emitting pole of the 2 nd triode, the two ends of the control coil of the low-current relay are connected in parallel with the two ends of the 12 th diode, the two ends of the normally open contact of the low-current relay are connected with the RC series circuit in parallel, and the two ends of the normally open contact of the low-current relay are connected with. The charging gun has the advantages that the charging safety and stability after the charging gun is pulled out are improved, and the damage to the storage battery and the controller box is reduced.
Preferably, the RC series circuit comprises a No. 2 capacitor, a No. 7 resistor and a No. 8 resistor, wherein the No. 7 resistor and the No. 8 resistor are connected in parallel and then are connected in series with the No. 2 capacitor and then are respectively electrically connected with two ends of a control coil of the low-current relay, and the protection effect on a relay contact is improved.
Preferably, the plug-in fuse is provided with an LED lamp for detecting the on-off of the fuse. The on-off state in the power supply control circuit is better detected, and the charging state of the storage battery is better guaranteed.
The utility model has the advantages that: when the whole vehicle is charged by inserting the charging gun, the voltage is reduced by the DCDC voltage reduction power module
The charging circuit can be closed and disconnected in time before and after the storage battery is charged, the charging circuit is controlled by the heavy-current relay, the storage battery feed caused by the work of a low-voltage apparatus under the work of a normal-power supply is prevented, and the state of the storage battery is better ensured. The on-off and the service life of a large-current relay of a storage battery charging loop are better guaranteed; the problem of current new forms of energy fill electric pile 12V and the different platforms of 24V power cause the damage to power control box heavy current relay, improve the time delay safety and stability that charges after the rifle that charges is pulled out, reduce the injury that causes the control box, compact structure more does benefit to and reduces product occupation space.
Description of the drawings:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic diagram of a structure of a mounting position of a large current relay of a novel power control box with time delay protection according to the present invention;
fig. 2 is a schematic view of the structure of the installation position of the conductive copper bar of the novel power control box with time delay protection of the present invention;
FIG. 3 is a schematic view of the upper lid of FIG. 1 after installation;
FIG. 4 is a schematic top view of the structure of FIG. 1;
fig. 5 is a schematic diagram of a circuit structure of a delay charging protection circuit module of the novel power control box with delay protection of the present invention;
fig. 6 is an electrical schematic structural diagram of the novel power control box with time-delay protection of the present invention.
Detailed Description
In the embodiments shown in fig. 1, 2, 3, 4, 5, and 6, a novel power control box with time-delay protection includes a power control box body 01 and a power control circuit module thereof, wherein the power control circuit module has a tab fuse, a plate fuse, two low-voltage large-current relays, a plurality of small-current relays, and a plurality of conductive copper bars; two low-voltage large-current relays, a plurality of small-current relays, a plug-in piece type fuse and a plate type fuse are all arranged on the front face of a power supply control bottom box, the plug-in piece type fuse is provided with an LED lamp for detecting the on-off of the fuse, conductive copper arrangement is arranged at the back position of the control bottom box, a whole vehicle storage battery and/or a DC/DC voltage reduction power supply module input from the storage battery are connected through a conductive copper bar 20, and the low-voltage large-current relays are arranged in a charging loop of a control circuit module. Relay coils of a plurality of small current relays are arranged in a time-delay charging protection circuit module, a power input end of the time-delay charging protection circuit module is connected with an auxiliary input power supply of a charging pile, and normally open contacts of the relays of the small current relays are connected with control coils of a first low-voltage large-current relay K1 in two low-voltage large-current relays in parallel; two ends of an open contact of the second low-voltage high-current relay normally K2 are respectively connected in series with the plug-in fuse 13 and the plate fuse 14 (see figure 6) to be used as a main switch of a power supply of the whole vehicle. And a control coil of the low-voltage large-current relay is in control connection with an auxiliary power supply of the charging pile of the new energy automobile. The power supply control circuit module borrows the power supply control circuit module of the new energy automobile in the prior art, and the plug-in sheet type fuse, the plate type fuse and the heavy current relay are arranged in the charge-discharge loop to improve the on-off state in the power supply control circuit, so that the charging state of the storage battery is ensured. An output low-voltage plug port 12 is arranged on the side edge of the power control box body 01, and the output low-voltage plug port 12 and the two low-voltage large-current relays are respectively positioned at the adjacent side edge directions of the power control box body 01. The load working current of the large-current relay is 30A-200A/24V. The load working current of the low-current relay is 5A-25A. The power supply control circuit module adopts wide voltage power supply input, and the power supply input of the wide voltage power supply input is DC 9-30V. A new energy vehicle on the existing market has a mixed use state of new and old charging piles, a 12V platform and a 24V platform are usually arranged at the coil end control power input of the relay of the new and old charging piles, a charging large-current relay is easy to damage due to the mixed use of the two voltage platforms, and a wide-voltage large-current relay is not developed due to the fact that a low-voltage large-current relay considers the problem of component cost; based on the background, the function is integrated on the PCB inside the power control box, namely, the power control circuit module adopts a wide voltage power input DC 9-30V circuit, the wide voltage power input DC 9-30V circuit can use the wide voltage power input control circuit in the prior art, the coil end of the low-voltage heavy-current relay is closed, and the contact end loop normally acts. The power supply control circuit module is internally provided with a time-delay charging protection circuit module, and the time-delay charging disconnection of the storage battery by the power supply control circuit module after the charging gun is pulled out is realized through the time-delay protection circuit module. The time delay charging protection circuit module can use a time delay control circuit in the prior art. The two low-voltage large-current relays 10 are arranged in parallel in the power control box body and are in a local distribution structure at the same side. The control circuit integrated PCB circuit board 30 arranged in the power control circuit module is arranged at the position of the back face of the control bottom box in the power control box body, and is arranged at the position below the two low-voltage heavy-current relays. That is to say, the power control box body includes the upper box body (see fig. 2) and the lower box body (see fig. 2), two low-voltage heavy-current relays 10, the plug-in sheet type fuse and the plate type fuse are installed in the upper box body, and the control circuit integrated PCB circuit board 30 and the conductive copper bar 20 are installed in the lower box body. The delay charging protection circuit module 60 (see fig. 5 and 6) includes a 10 th diode D10, a 1 st electrolytic capacitor C1, a 5 th resistor R5, a 11 th diode D11, a 6 th resistor R6, a 4 th capacitor C4, a 1 st triode Q1, a 2 nd triode Q2, a 1 st voltage regulator Z1, a 12 th diode D12, a small current relay and an RC series circuit, wherein the positive terminal AA + of the 10 th diode D10 is electrically connected with the charging pile auxiliary input power positive electrode 50, after the 10 th diode is connected in series with the 1 st electrolytic capacitor C1, the negative terminal a-of the 1 st electrolytic capacitor C1 is electrically connected with the charging pile auxiliary input power negative electrode, after the 10 th diode negative electrode is sequentially connected in series with the 5 th resistor and the 11 th diode positive electrode, the 11 th diode negative electrode is electrically connected with the collectors of the 1 st triode and the 2 nd triode, and at the 11 th diode negative electrode is electrically connected in series with the 6 th resistor and, the emitting electrode of the 1 st triode is electrically connected with the base electrode of the 2 nd triode, the base electrode of the 1 st triode is connected with the cathode of the 1 st voltage-regulator tube in series, the anode of the 1 st voltage-regulator tube is respectively electrically connected with the anode of the 12 th diode and is electrically connected with the other end of the 4 th capacitor, the cathode of the 12 th diode is electrically connected with the emitting electrode of the 2 nd triode, the two ends of the control coil of the small current relay are connected in parallel with the two ends of the 12 th diode, the two ends of the normally open contact of the small current relay are connected in parallel with the. The RC series circuit comprises a 2 nd capacitor, a 7 th resistor and an 8 th resistor, wherein the 7 th resistor and the 8 th resistor are connected in parallel and then are respectively electrically connected with the two ends of the control coil of the low-current relay after being connected with the 2 nd capacitor in series. The 1 st transistor Q1 and the 2 nd transistor Q2 are NPN transistors.
In the working principle, when the switch box is powered on, the 1 st electrolytic capacitor C1 is charged in the 10 th diode D10, and meanwhile, the power supply controls the 1 st triode Q1 and the 2 nd triode Q2 to output a small current relay RLY2 with the voltage control model of HF49D through the 5 th resistor R5, the 11 th diode D11 and the 6 th resistor R6 to work. When the switch box is powered off, the 1 st electrolytic capacitor C1 discharges voltage and current, the 1 st triode Q1 is controlled through the 5 th resistor R5, the 11 th diode D11 and the 6 th resistor R6, the 2 nd triode Q2 outputs voltage to control the HF49D relay to continue to work, and when the discharge of the electric energy of the 1 st electrolytic capacitor C1 is completed, the circuit stops working. After the switch box is powered off, the relay can work for 5-10 minutes.
In the description of the positional relationship of the present invention, the terms such as "inner", "outer", "upper", "lower", "left", "right", etc., which indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, are presented only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (10)
1. The utility model provides a novel power control box with time delay protection, includes power control box body and power control circuit module, its characterized in that: the power supply control circuit module is provided with a time-delay charging protection circuit module, an inserting piece type fuse, a plate type fuse, two low-voltage large-current relays, a plurality of small-current relays and a plurality of conductive copper bars; the two low-voltage large-current relays, the plurality of small-current relays, the plug-in sheet type fuses and the plate type fuses are all arranged on the front side of the power supply control bottom box, the conductive copper arrangement is arranged at the back side position of the control bottom box and is connected with a storage battery of the whole vehicle and/or a DC/DC voltage reduction power supply module input from the storage battery through a conductive copper bar, and the low-voltage large-current relays are arranged in a charging loop of the control circuit module; relay coils of a plurality of small current relays are arranged in a time-delay charging protection circuit module, a power input end of the time-delay charging protection circuit module is connected with an auxiliary input power supply of a charging pile, and relay normally open contacts of the small current relays are connected with a first low-voltage large-current relay control coil in two low-voltage large-current relays in parallel; and two ends of a normally open contact of the second low-voltage large-current relay are respectively connected in series with a plug-in fuse and a plate fuse to serve as a main switch of a power supply of the whole vehicle.
2. The novel power control box of claim 1, wherein: the load working current of the low-voltage high-current relay is 30-200A.
3. The novel power control box of claim 1, wherein: the load working current of the low-current relay is 5A-25A.
4. The novel power control box of claim 1, wherein: the power supply control circuit module adopts wide voltage power supply input, and the power supply input of the wide voltage power supply input is DC 9-30V.
5. The novel power control box of claim 1, wherein: the power supply control circuit module is internally provided with a time-delay charging protection circuit module, and the time-delay disconnection of the power supply control circuit module to the battery management system BMS after the charging gun is pulled out is realized through the time-delay protection circuit module.
6. The novel power control box according to claim 1 or 2, characterized in that: the two low-voltage heavy-current relays are in a local distribution structure which is arranged in parallel and at the same side in the power control box body.
7. The novel power control box of claim 1, wherein: the control circuit integrated PCB circuit board arranged in the power control circuit module is arranged at the position of the back face of the control bottom box in the power control box body, and is arranged at the position below the two low-voltage heavy-current relays.
8. The novel power control box of claim 1, wherein: the delay charging protection circuit module comprises a 10 th diode, a 1 st electrolytic capacitor, a 5 th resistor, a 11 th diode, a 6 th resistor, a 4 th capacitor, a 1 st triode, a 2 nd triode, a 1 st voltage regulator tube, a 12 th diode, a small current relay and an RC series circuit, wherein the positive electrode of the 10 th diode is electrically connected with the positive electrode of the auxiliary input power supply of the charging pile, the 10 th diode is electrically connected with the negative electrode of the auxiliary input power supply of the charging pile after being connected with the 1 st electrolytic capacitor in series, the negative electrode of the 10 th diode is electrically connected with the collecting electrodes of the 1 st triode and the 2 nd triode respectively after being sequentially connected with the positive electrodes of the 5 th resistor and the 11 th diode in series, the negative electrode of the 11 th diode is electrically connected with the base electrode of the 1 st triode after being connected with the 6 th resistor in series, the emitting electrode of the, the positive pole of the 1 st voltage-regulator tube is respectively electrically connected with the positive pole of the 12 th diode and the other end of the 4 th capacitor, the negative pole of the 12 th diode is electrically connected with the emitting pole of the 2 nd triode, the two ends of the control coil of the low-current relay are connected in parallel with the two ends of the 12 th diode, the two ends of the normally open contact of the low-current relay are connected with the RC series circuit in parallel, and the two ends of the normally open contact of the low-current relay are connected with.
9. The novel power control box of claim 8, wherein: the RC series circuit comprises a No. 2 capacitor, a No. 7 resistor and a No. 8 resistor, wherein the No. 7 resistor and the No. 8 resistor are connected in parallel and then are connected with the No. 2 capacitor in series and then are respectively electrically connected with the two ends of the control coil of the low-current relay.
10. The novel power control box of claim 1, wherein: the inserted fuse is provided with an LED lamp for detecting the on-off of the fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920466864.0U CN209938329U (en) | 2019-04-09 | 2019-04-09 | Novel power control box with time delay protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920466864.0U CN209938329U (en) | 2019-04-09 | 2019-04-09 | Novel power control box with time delay protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209938329U true CN209938329U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920466864.0U Expired - Fee Related CN209938329U (en) | 2019-04-09 | 2019-04-09 | Novel power control box with time delay protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209938329U (en) |
-
2019
- 2019-04-09 CN CN201920466864.0U patent/CN209938329U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |