CN219947914U - Vehicle-mounted charger system and vehicle - Google Patents
Vehicle-mounted charger system and vehicle Download PDFInfo
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- CN219947914U CN219947914U CN202321729015.2U CN202321729015U CN219947914U CN 219947914 U CN219947914 U CN 219947914U CN 202321729015 U CN202321729015 U CN 202321729015U CN 219947914 U CN219947914 U CN 219947914U
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- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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Abstract
The utility model relates to the field of new energy electric automobiles, in particular to a vehicle-mounted charger system and a vehicle, wherein the system comprises: a vehicle-mounted charger; the power supply device is connected with the vehicle-mounted charger; the anti-reflection part is arranged on the power supply loop of the vehicle-mounted charger and the power supply device, and the power supply loop is disconnected when the power supply device is reversely connected with an external power supply. Therefore, the problem that in the prior art, the DCDC internal circuit is damaged due to the fact that the user is connected with the power-on device in an external mode and is in power-on mode, and the vehicle-mounted charger needs to be replaced or maintained, so that the user experience is poor is solved.
Description
Technical Field
The utility model relates to the field of new energy electric automobiles, in particular to a vehicle-mounted charger system and a vehicle.
Background
In order to reduce environmental pollution and solve the crisis of petroleum energy, new energy automobiles become the main stream of the automobile industry, and electric automobiles are the main force armies of the new energy automobiles. With the development of new energy electric vehicles becoming an important development direction of the future automobile industry, vehicle-mounted electronic devices are in trend of miniaturization, integration and high power density. At present, the integrated vehicle-mounted charger integrated by multiple units is produced in mass, but the problems of power shortage of a small storage battery of the whole vehicle and the like caused by long-time parking of the whole vehicle or system failure are also accompanied.
Because the new energy vehicle has high intelligent degree, complex functional logic, high requirement on the anti-interference capability of network communication signals and large low-voltage power consumption of the whole vehicle, the small storage battery is lack of power due to slight improper operation of a user, and the high voltage on the whole vehicle cannot be realized. Under the condition, a user obtains normal electricity through external power taking, and the DCDC (direct current-direct current converter) is started by high voltage on the whole vehicle to charge the small storage battery. The whole car environment is complicated, and each car factory has various whole car small storage battery loop designs to let the anti-countermeasures degree of difficulty increase, and the user is careless to be led to taking the electricity and take the reaction slightly, will arouse DCDC internal circuit damage, leads to changing integrated machine that charges to the maintenance progress is slow, the expense is high, the time is long, makes the customer use the car experience feel poor.
Disclosure of Invention
The utility model aims to provide a vehicle-mounted charger system, which solves the problems that in the prior art, the user external power-on power-off can cause damage to an internal circuit of a DCDC, and the vehicle-mounted charger needs to be replaced or maintained, so that the user experience is poor; the second object is to provide a vehicle.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
an on-board charger system, comprising: a vehicle-mounted charger; the power supply device is connected with the vehicle-mounted charger; the anti-reflection part is arranged on the power supply loop of the vehicle-mounted charger and the power supply device, and the power supply loop is disconnected when the power supply device is reversely connected with an external power supply.
According to the technical means, the anti-reflection piece is added on the power supply loop of the vehicle-mounted charger and the power supply device, and when the external power supply is in power-on reverse connection, the power supply loop is disconnected to protect the vehicle-mounted charger, so that maintenance or replacement of the vehicle-mounted charger is avoided, and user experience is improved.
Further, the anti-reflection member is a circuit breaker.
Further, the anti-reflection member is arranged on a grounding line of the power supply loop.
Further, the vehicle-mounted charger comprises a power supply system assembly and a direct current converter DCDC.
Further, a low-voltage loop is arranged in the DCDC.
Further, a freewheel diode is arranged on the low-voltage loop.
Further, the turn-off current of the anti-reflection member is smaller than the peak current of the freewheel diode and larger than the operation peak current of the DCDC.
Further, the disconnection time of the anti-reflection member is shorter than a preset time.
Further, the power supply device is a storage battery.
A vehicle comprising the on-board charger system as described in the above embodiments.
The utility model has the beneficial effects that:
according to the utility model, the anti-reflection piece is added on the power supply loop of the vehicle-mounted charger and the power supply device, and when the external power supply is in power-on reverse connection, the power supply loop is disconnected to protect the DCDC low-voltage loop in the vehicle-mounted charger from being damaged, so that the vehicle-mounted charger is prevented from being maintained or replaced, and the user experience is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
Fig. 1 is a schematic diagram of a vehicle-mounted charger system provided by an embodiment of the present utility model;
FIG. 2 is a schematic diagram illustrating the current direction of a reverse connection circuit according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of anti-reflection according to an embodiment of the present utility model.
Detailed Description
Further advantages and effects of the present utility model will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
Specifically, fig. 1 is a schematic block diagram of a vehicle-mounted charger system according to an embodiment of the present utility model.
As shown in fig. 1, the in-vehicle charger system 10 includes: a vehicle-mounted charger 11, a power supply device 12 and an anti-reflection member 13.
The power supply device 12 is connected with the vehicle-mounted charger 11, the anti-reflection member 13 is arranged on a power supply loop of the vehicle-mounted charger 11 and the power supply device 12, and the power supply loop is disconnected when the power supply device 12 is reversely connected with an external power supply.
Further, the power supply device can be a storage battery (a small storage battery of the whole vehicle), the anti-reflection member can be a circuit breaker, and the anti-reflection member is arranged on a grounding wire of the power supply loop.
Further, the vehicle-mounted charger comprises a power supply system assembly and a direct current converter DCDC, wherein a low-voltage loop is arranged in the DCDC, and a freewheeling diode is arranged on the low-voltage loop.
It should be noted that, when the power supply device of the vehicle is deficient in power, so that the whole vehicle cannot start DCDC operation at high voltage, so that external power is needed to start DCDC operation at high voltage to charge the power supply device, but if the user does not operate properly, the power supply device and the external power are reversely connected, that is, the positive pole of the external power is mounted on the negative pole of the power supply device, when the negative pole of the external power is mounted on the positive pole of the power supply device, the whole vehicle has voltage drop, when the power supply device and the external power are reversely connected, the DCDC low-voltage loop instantaneously has hundreds of amperes of current to pass, so that the internal freewheeling diode is burnt, wherein the trend diagram of the reversely connected current is shown in fig. 2, therefore, the utility model is provided with a reverse preventing piece on the loop of the vehicle-mounted charger and the power supply device, so that when the power supply device and the external power are reversely connected, the power supply loop is disconnected, and the internal freewheeling diode is prevented from being burnt.
In the embodiment of the utility model, the off current of the anti-reflection member is smaller than the peak current of the freewheel diode and larger than the working peak current of the DCDC.
It can be understood that in the embodiment of the utility model, the off current of the anti-reflection member is determined according to the peak value of the parallel connection of the freewheeling diode of the DCDC low-voltage loop, and the off current of the anti-reflection member is lower than the peak current (20-30A) of the freewheeling diode and is larger than the DCDC working peak current value.
In the embodiment of the utility model, the disconnection time of the anti-reflection member is smaller than the preset time.
The preset duration may be set according to a specific situation, and is not limited to this, and may be set to 1 millisecond, for example.
It can be understood that the time length of the disconnection of the anti-reflection member is smaller than the preset time length, so as to prevent the internal freewheeling diode from being burnt out when the current has passed through the power supply loop and the anti-reflection member has not been disconnected.
In summary, the vehicle-mounted charger system solves the problem of external power-on and power-on fault, and enables a user to realize the operation problem and protect the replacement part through the anti-reflection part which is simple in disconnection, recoverable and easy to operate.
According to the embodiment of the utility model, the circuit breaker is added on the power supply loop of the whole vehicle small storage battery and the power supply device, as shown in fig. 3, when a user puts the anode of an external power supply on the cathode of the whole vehicle small storage battery, and the cathode of the external power supply is put on the anode of the whole vehicle small storage battery, when instantaneous large current passes through the circuit breaker, when the current in the power supply loop of the DCDC and the whole vehicle small storage battery is higher than a normal value (for example, 300A), the DCDC low-voltage loop protection power supply system assembly is disconnected by setting the disconnected current value of the circuit breaker due to the disconnection characteristic of the circuit breaker, so that the damage of the DCDC low-voltage loop in the power supply system is avoided, parts are not required to be replaced, and when the DCDC low-voltage loop is required to be recovered, the anode and the external power supply are only required to be correctly put on, and the circuit breaker switch is closed. The magnitude of the current value of the circuit breaker is determined according to the peak value of the parallel connection of the flywheel diodes of the DCDC low-voltage loop, the breaking current value of the circuit breaker is lower than the peak value (20-30A) and is larger than the DCDC working peak current value, and the circuit breaker is required to be broken within a preset duration.
According to the vehicle-mounted charger system provided by the embodiment of the utility model, the anti-reflection piece is added on the power supply loop of the vehicle-mounted charger and the power supply device, and when the external power supply is in power-on reverse connection, the power supply loop is disconnected to protect the DCDC low-voltage loop in the vehicle-mounted charger from being damaged, so that the maintenance or the replacement of the vehicle-mounted charger is avoided, and the user experience is improved.
The embodiment of the utility model also provides a vehicle, which comprises the vehicle-mounted charger system.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "N" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. A vehicle-mounted charger system, comprising:
a vehicle-mounted charger;
the power supply device is connected with the vehicle-mounted charger;
the anti-reflection part is arranged on the power supply loop of the vehicle-mounted charger and the power supply device, and the power supply loop is disconnected when the power supply device is reversely connected with an external power supply.
2. The vehicle-mounted charger system of claim 1, wherein the anti-reflection member is a circuit breaker.
3. The vehicle-mounted charger system according to claim 1 or 2, wherein the anti-reflection member is provided on a ground line of the power supply circuit.
4. The vehicle-mounted charger system of claim 1, wherein the vehicle-mounted charger comprises a power supply system assembly and a direct current converter DCDC.
5. The vehicle-mounted charger system of claim 4, wherein a low voltage loop is disposed within the DCDC.
6. The vehicle-mounted charger system of claim 5, wherein a freewheeling diode is provided on the low-voltage circuit.
7. The vehicle-mounted charger system of claim 6, wherein the anti-reflection member has an off current less than a peak current of the freewheel diode and greater than an operating peak current of the DCDC.
8. The vehicle-mounted charger system of claim 1 or 7, wherein the anti-reflection member is disconnected for a period of time less than a preset period of time.
9. The vehicle-mounted charger system of claim 1, wherein the power supply device is a battery.
10. A vehicle comprising an onboard charger system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321729015.2U CN219947914U (en) | 2023-07-03 | 2023-07-03 | Vehicle-mounted charger system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321729015.2U CN219947914U (en) | 2023-07-03 | 2023-07-03 | Vehicle-mounted charger system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219947914U true CN219947914U (en) | 2023-11-03 |
Family
ID=88546279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321729015.2U Active CN219947914U (en) | 2023-07-03 | 2023-07-03 | Vehicle-mounted charger system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219947914U (en) |
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2023
- 2023-07-03 CN CN202321729015.2U patent/CN219947914U/en active Active
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