CN213341726U - Multiloop parallel connection switching device for direct current high-voltage system of new energy vehicle and ship - Google Patents
Multiloop parallel connection switching device for direct current high-voltage system of new energy vehicle and ship Download PDFInfo
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- CN213341726U CN213341726U CN202022412043.4U CN202022412043U CN213341726U CN 213341726 U CN213341726 U CN 213341726U CN 202022412043 U CN202022412043 U CN 202022412043U CN 213341726 U CN213341726 U CN 213341726U
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Abstract
The utility model discloses a new forms of energy car and ship direct current high voltage system multiloop meets auto-change over device, including first group battery, second group battery, total positive negative load and total negative load, first group battery and second group battery are parallelly connected electric connection; the two groups of battery systems can be effectively connected in parallel to form a whole to provide energy for the load, so that the influence of the pressure difference between the two groups of battery systems is effectively solved, the recovery is convenient, and the influence of the pressure difference is not worried about; the charging loops of the first battery pack and the second battery pack are connected in parallel by using the high-power conducting diode D3 and the diode D4, so that the two battery packs form a whole body to be charged by a charger, and the problem that the conventional system needs two independent charging interfaces to respectively charge the battery system is solved. The charging system is simplified, the personnel are not needed to be on duty, the charging gun needs to be pulled out manually after the charging of one group of batteries is finished, and the other group of batteries is charged.
Description
Technical Field
The utility model relates to a new forms of energy system multiloop switches technical field, specifically is new forms of energy car and ship direct current high voltage system multiloop and meets auto-change over device.
Background
New Energy (NE) is also known as unconventional energy. Refers to various forms of energy sources other than traditional energy sources. The energy to be popularized is energy which is just developed and utilized or is actively researched, such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy, nuclear fusion energy and the like. The new energy vehicle and ship refers to vehicles such as vehicles and ships using new energy as drive.
The existing power supply system of the new energy vehicle and ship often comprises a direct current high-voltage system, and multi-loop parallel switching of the high-voltage system is needed. Referring to fig. 2, the conventional vehicle and ship power supply system charges two groups of battery pack systems respectively through the control of K1/K2/K3, and cannot charge the battery 1 and the battery 2 at the same time; the existing charging system needs two independent charging interfaces to charge a battery system respectively, personnel are often needed to guard, and after one group of batteries are required to be charged, a charging gun needs to be pulled out manually, and the other group of batteries are charged, so that a new energy vehicle and ship direct-current high-voltage system multi-loop parallel connection switching device needs to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a new forms of energy car and vessel direct current high voltage system multiloop meets auto-change over device, through can effectively connect two sets of battery systems and connect into a whole and provide the energy for the load, effectively solved the influence of pressure differential between two sets of battery systems, when one set of group battery appears the serious trouble and needs the maintenance simultaneously, can convenient demolish, convenient recovery and need not worry the influence of pressure differential; two groups of high-power conduction are used for connecting the charging loops of the first battery pack and the second battery pack in parallel, so that the two battery packs form a whole body to be charged by a charger, and the problem that the conventional system needs two independent charging interfaces to charge the battery system respectively is solved. The charging system is simplified, the personnel are not needed to be on duty, and the problem provided by the background technology is solved without waiting for the completion of the charging of a group of batteries.
In order to achieve the above object, the utility model provides a following technical scheme: new forms of energy car and vessel direct current high voltage system multiloop meets auto-change over device, including first group battery, second group battery, total positive negative load and total negative load, first group battery and second group battery be parallelly connected electric connection, parallelly connected first group battery and second group battery electric connection between total positive load and total negative load, the anodal electric connection of first group battery has diode D1, the anodal electric connection of second group battery has diode D2.
The diode D3, the contactor K3 and the diode D4 are electrically connected between the anodes of the first battery pack and the second battery pack in sequence, and the diode D3, the diode D4, the diode D1 and the diode D2 are arranged in series.
Diode conduction direction of diode D1 is anodal to total positive load of first group battery, diode conduction direction of diode D2 is anodal to total positive load of second group battery, diode conduction direction of diode D3 is the anodal of contactor K3 to first group battery, diode conduction direction of diode D4 is the anodal of contactor K3 to second group battery.
Preferably, a switch is arranged between the diode D3 and the contactor K3, and a switch is arranged between the diode D4 and the contactor K3.
Preferably, the diode D1, the diode D2, the diode D3 and the diode D4 are all configured as high-power conducting diodes.
Preferably, the cathodes of the first battery pack and the second battery pack are electrically connected through a lead.
Preferably, the first battery pack and the second battery pack are configured as a large-capacity lithium battery pack.
Preferably, the supply voltage between the total positive load and the total negative load is DC 48V.
Compared with the prior art, the beneficial effects of the utility model are that:
the two groups of battery systems can be effectively connected in parallel to form a whole to provide energy for the load, so that the influence of the pressure difference between the two groups of battery systems is effectively solved, and meanwhile, when one group of battery pack has serious faults and needs to be maintained, the battery pack can be conveniently dismounted and conveniently recovered without worrying about the influence of the pressure difference; the charging loops of the first battery pack and the second battery pack are connected in parallel by using the high-power conducting diode D3 and the diode D4, so that the two battery packs form a whole body to be charged by a charger, and the problem that the conventional system needs two independent charging interfaces to respectively charge the battery system is solved. The charging system is simplified, the personnel are not needed to be on duty, the charging gun needs to be pulled out manually after the charging of one group of batteries is finished, and the other group of batteries is charged.
Drawings
Fig. 1 is a schematic diagram of a circuit topology structure of the multi-loop parallel switching of the dc high voltage system of the present invention;
fig. 2 is a schematic diagram of a circuit topology of a prior art solution.
In the figure: 1. a first battery pack; 2. a second battery pack; 3. a total positive load; 4. a total negative load; 5. a diode D1; 6. a diode D2; 7. a diode D3; 8. a diode D4; 9. contactor K3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: new forms of energy car and vessel direct current high voltage system multiloop meets auto-change over device, including first group battery 1, second group battery 2, total positive negative load 3 and total negative load 4, first group battery 1 is parallelly connected electric connection with second group battery 2, parallelly connected first group battery 1 and second group battery 2 electric connection between total positive negative load 3 and total negative load 4, the anodal electric connection of first group battery 1 has diode D1, the anodal electric connection of second group battery 2 has diode D2.
The diode D3, the contactor K3 and the diode D4 are electrically connected between the anodes of the first battery pack 1 and the second battery pack 2 in sequence, and the diode D3, the diode D4, the diode D1 and the diode D2 are connected in series.
The diode conduction direction of the diode D1 is from the anode of the first battery pack 1 to the total positive load 3, the diode conduction direction of the diode D2 is from the anode of the second battery pack 2 to the total positive load 3, the diode conduction direction of the diode D3 is from the contactor K3 to the anode of the first battery pack 1, and the diode conduction direction of the diode D4 is from the contactor K3 to the anode of the second battery pack 2.
A switch is arranged between the diode D3 and the contactor K3, a switch is arranged between the diode D4 and the contactor K3, and the diode D1, the diode D2, the diode D3 and the diode D4 are all set to be high-power conducting diodes.
The cathodes of the first battery pack 1 and the second battery pack 2 are electrically connected through a lead, the first battery pack 1 and the second battery pack 2 are large-capacity lithium battery packs, and the power supply voltage between the total positive load 3 and the total negative load 4 is DC 48V.
The working principle is as follows: in the new scheme, high-power conducting diodes D1 and D2 are used for replacing contactors of K1 and K2, and the first battery pack 1 and the second battery pack 2 can be directly connected into a whole to provide energy for a load regardless of the existence of pressure difference; the technical scheme solves a plurality of problems caused by pressure difference when a plurality of battery packs are connected in parallel for use, and the technology can be used for connecting in parallel at any time and maintaining one group of batteries at any time no matter whether the pressure difference exists between the battery packs or not; the technical scheme ensures that the multi-path parallel connection of the high-capacity battery system is simple and reliable to use, can be widely applied to application scenes of large-tonnage mine transportation vehicles, electric ships and the like, and ensures that the system is more stable and reliable;
the two groups of battery systems can be effectively connected in parallel to form a whole to provide energy for the load, so that the influence of the pressure difference between the two groups of battery systems is effectively solved, and meanwhile, when one group of battery pack has serious faults and needs to be maintained, the battery pack can be conveniently dismounted and conveniently recovered without worrying about the influence of the pressure difference; the charging loops of the first battery pack 1 and the second battery pack 2 are connected in parallel by using a high-power conducting diode D3 and a diode D4, so that the two battery packs form a whole to be charged by a charger, and the problem that the conventional system needs two independent charging interfaces to charge a battery system respectively is solved. The charging system is simplified, the personnel are not needed to be on duty, the charging gun needs to be pulled out manually after the charging of one group of batteries is finished, and the other group of batteries is charged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. New forms of energy car and ship direct current high voltage system multiloop meets auto-change over device, includes first group battery (1), second group battery (2), total positive load (3) and total negative load (4), its characterized in that: the first battery pack (1) and the second battery pack (2) are electrically connected in parallel, the first battery pack (1) and the second battery pack (2) which are connected in parallel are electrically connected between a total positive load (3) and a total negative load (4), the positive electrode of the first battery pack (1) is electrically connected with a diode D1 (5), and the positive electrode of the second battery pack (2) is electrically connected with a diode D2 (6);
a diode D3 (7), a contactor K3 (9) and a diode D4 (8) are electrically connected between the anodes of the first battery pack (1) and the second battery pack (2) in sequence, and the diode D3 (7), the diode D4 (8), the diode D1 (5) and the diode D2 (6) are arranged in series;
the diode of diode D1 (5) switches on the direction and is anodal to total positive load (3) of first group battery (1), the diode of diode D2 (6) switches on the direction and is anodal to total positive load (3) of second group battery (2), the diode of diode D3 (7) switches on the direction and is contactor K3 (9) to the anodal of first group battery (1), the diode of diode D4 (8) switches on the direction and is contactor K3 (9) to the anodal of second group battery (2).
2. The new energy vehicle and vessel direct current high voltage system multi-loop parallel connection switching device of claim 1, characterized in that: a switch is arranged between the diode D3 (7) and the contactor K3 (9), and a switch is arranged between the diode D4 (8) and the contactor K3 (9).
3. The new energy vehicle and vessel direct current high voltage system multi-loop parallel connection switching device of claim 1, characterized in that: the diode D1 (5), the diode D2 (6), the diode D3 (7) and the diode D4 (8) are all set to be high-power conducting diodes.
4. The new energy vehicle and vessel direct current high voltage system multi-loop parallel connection switching device of claim 1, characterized in that: the negative electrodes of the first battery pack (1) and the second battery pack (2) are electrically connected through a lead.
5. The new energy vehicle and vessel direct current high voltage system multi-loop parallel connection switching device of claim 1, characterized in that: the first battery pack (1) and the second battery pack (2) are set as high-capacity lithium battery packs.
6. The new energy vehicle and vessel direct current high voltage system multi-loop parallel connection switching device of claim 1, characterized in that: the supply voltage between the total positive load (3) and the total negative load (4) is DC 48V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022412043.4U CN213341726U (en) | 2020-10-27 | 2020-10-27 | Multiloop parallel connection switching device for direct current high-voltage system of new energy vehicle and ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022412043.4U CN213341726U (en) | 2020-10-27 | 2020-10-27 | Multiloop parallel connection switching device for direct current high-voltage system of new energy vehicle and ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213341726U true CN213341726U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022412043.4U Expired - Fee Related CN213341726U (en) | 2020-10-27 | 2020-10-27 | Multiloop parallel connection switching device for direct current high-voltage system of new energy vehicle and ship |
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|---|---|
| CN (1) | CN213341726U (en) |
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2020
- 2020-10-27 CN CN202022412043.4U patent/CN213341726U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |