CN221090507U - High-voltage box of electric automobile - Google Patents
High-voltage box of electric automobile Download PDFInfo
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- CN221090507U CN221090507U CN202322516067.8U CN202322516067U CN221090507U CN 221090507 U CN221090507 U CN 221090507U CN 202322516067 U CN202322516067 U CN 202322516067U CN 221090507 U CN221090507 U CN 221090507U
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- 238000010438 heat treatment Methods 0.000 claims description 65
- 238000007599 discharging Methods 0.000 claims description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 30
- 229910052802 copper Inorganic materials 0.000 claims description 30
- 239000010949 copper Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 238000013461 design Methods 0.000 description 8
- 206010068065 Burning mouth syndrome Diseases 0.000 description 7
- 238000011161 development Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a high-voltage box of an electric automobile, which comprises a box body and a driving circuit arranged in the box body; the driving circuit includes: the first end of the first charging positive relay is connected with the battery management system, the second end of the first charging positive relay is connected with a charger of the electric automobile, and the third end of the first charging positive relay is connected with the positive electrode of the power battery; the first end of the first charging negative relay is connected with the battery management system, the second end of the first charging negative relay is connected with the charger, and the third end of the first charging negative relay is connected with the negative electrode of the power battery; the first end of the second charging positive relay is connected with the battery management system, the second end of the second charging positive relay is connected with the charger, and the third end of the second charging positive relay is connected with the positive electrode of the power battery through the first battery positive plug-in; the first end of the second charging negative relay is connected with the battery management system, the second end of the second charging negative relay is connected with the charger, and the third end of the second charging negative relay is connected with the power battery. The utility model has the following advantages: the internal loop of the high-voltage box can be deleted according to actual requirements; the plug-in components of high-pressure box are distributed rationally.
Description
Technical Field
The utility model relates to a high-voltage box, in particular to a high-voltage box of an electric automobile.
Background
Along with the rapid improvement of new energy technology and the encouragement and support of China, more and more commercial vehicles and heavy trucks also start to use new energy batteries, the power supply of the whole vehicle power battery system is up to 700V, the current is up to 500A, the electrical requirements on a high-voltage box with a power supply distribution function are also high, and the high-voltage box with a high-power charging and discharging function is required; meanwhile, considering the requirements of limited space and cost reduction of the whole vehicle, the design of the high-voltage box has complete functions and compact structure, can be used as a generalized standard high-voltage box, and the high-voltage boxes required by other projects can be subtracted on the functions of the high-voltage box, so that compared with the non-standard high-voltage box designed according to the requirements of each project, the design cost and DV verification cost of the high-voltage box are greatly reduced, and the cost of the whole vehicle is further reduced; through market verification, the design reliability of the standard high-voltage box is guaranteed, and the failure rate of the whole vehicle is reduced correspondingly.
Along with the rapid development of new energy in China, most excellent new energy battery factories sell batteries overseas, but the communication modes of domestic charging piles and foreign charging piles are different; in China, the communication with the charging pile is according to national standard, and in abroad, the communication with the charging pile is according to European standard. At present, the main current BMS in China supports national standard charging and does not support European standard charging; if a BMS supporting European standard communication is developed, the development period is long, the development cost is high, a series of BMSs are required to verify functions of the BMS, and the like, so that the design cost and the rapid market occupation are considered; most of battery packs sold abroad at present are European standard communication between a whole vehicle controller and a charging pile; therefore, the high-voltage box is designed, the BMS is sold abroad without being communicated with the charging pile, the BMS is sold domestically without being communicated with the charging pile, and the BMS is required to be communicated with the charging pile, so that the charging communication interface can be used as an optional design.
Thus, the prior art has the following disadvantages:
1. The circuit of the high-voltage box cannot be deleted according to the requirement;
2. The plug-in components on the high voltage box are distributed unreasonably, which leads to internal wiring confusion and thus may lead to short circuits of the high voltage box.
Disclosure of utility model
Aiming at the problems in the prior art, a high-voltage box of an electric automobile is provided.
The specific technical scheme is as follows: the high-voltage box of the electric automobile comprises a box body and a driving circuit arranged in the box body, wherein a battery management system of a power battery of the electric automobile is also arranged in the box body;
the driving circuit includes:
The first end of the first charging positive relay is connected with the first output end of the battery management system, the second end of the first charging positive relay is connected with the charger of the electric automobile through a first charging positive plug-in unit, and the third end of the first charging positive relay is connected with the positive electrode of the power battery through a first battery positive plug-in unit;
The first end of the first charging negative relay is connected with the second output end of the battery management system, the second end of the first charging negative relay is connected with the charger through a first charging negative plug-in unit, and the third end of the first charging negative relay is connected with the negative electrode of the power battery through a first battery negative plug-in unit;
The first end of the second charging positive relay is connected with the third output end of the battery management system, the second end of the second charging positive relay is connected with the charger through a second charging positive plug-in unit, and the third end of the second charging positive relay is connected with the positive electrode of the power battery through the first battery positive plug-in unit;
the first end of the second charging negative relay is connected with the fourth output end of the battery management system, the second end of the second charging negative relay is connected with the charger through a second charging negative plug-in, and the third end of the second charging negative relay is connected with the negative electrode of the power battery through a second battery.
In a preferred embodiment of the present utility model, a first main fuse and a first hall current sensor are sequentially connected in series between the first battery front plug and the first charging front relay.
In a preferred embodiment of the present utility model, the driving circuit further includes:
The first end of the liquid cooling relay is connected with the fifth output end of the driving circuit, the second end of the liquid cooling relay is connected with the liquid cooling positive plug-in unit through the liquid cooling fuse, and the third end of the liquid cooling relay is connected with the first end of the main positive relay;
the first end of the main positive relay is connected with the first end of the heating positive relay, the second end of the main positive relay is connected with the sixth end output end of the battery management system, and the third end of the main positive relay is connected with the positive electrode of the power battery through a second battery positive plug-in;
the first end of the main negative relay is connected with the seventh output end of the battery management system, the second end of the main negative relay is connected with the motor of the electric automobile through a first discharging negative plug-in unit, and the third end of the main negative relay is connected with the negative electrode of the power battery through a second battery negative plug-in unit;
The first end of the heating positive relay is connected with the positive electrode of the power battery through the first battery positive plug-in unit, the second end of the heating positive relay is connected with the eighth output end of the battery management system, and the third end of the heating positive relay is connected with the first heating positive plug-in unit through a heating fuse;
The heating negative relay, the first end of heating negative relay is connected the ninth output of battery management system, the second heating positive plug-in components are connected to the second end of heating negative relay, the third end of heating negative relay passes through the second battery negative plug-in components are connected power battery's negative pole.
In a preferred embodiment of the present utility model, a second main fuse and a second hall current sensor are sequentially connected in series between the second battery front plug and the main relay.
In a preferred embodiment of the utility model, a first main fuse and a first hall current sensor are sequentially connected in series between the first battery positive plug-in and the first charging positive relay, and a second main fuse and a second hall current sensor are sequentially connected in series between the second battery positive plug-in and the main positive relay;
The first main fuse and the second main fuse are sequentially arranged on the outer side of the first side face of the box body;
The second side surface of the box body is adjacent to the first side surface, a first row of electrical plug-ins and a second row of electrical plug-ins which are parallel up and down are arranged on the outer side of the second side surface, and the first row of electrical plug-ins are positioned above the second row of electrical plug-ins;
The first row of the electrical plug-ins sequentially comprises the first battery positive plug-in, the second battery positive plug-in, the first charging negative plug-in and the second charging negative plug-in;
The second row of electrical plug-ins sequentially comprise the second charging positive plug-in, the first battery negative plug-in and the second battery negative plug-in;
the first main fuse and the first battery positive plug-in are electrically connected through a copper bar;
The second main fuse and the second battery positive plug are electrically connected through the copper bar.
In a preferred embodiment of the present utility model, a third side surface of the case body is opposite to the second side surface, and a third row of electrical connectors, a fourth row of electrical connectors, a fifth row of electrical connectors and a sixth row of electrical connectors which are parallel up and down are sequentially arranged on the outer side of the third side surface, wherein the third row of electrical connectors is located at the uppermost part, and the sixth row of electrical connectors is located at the lowermost part;
the third row of electrical plug-in units sequentially comprise a charging communication plug-in unit and a whole vehicle communication plug-in unit;
The fourth row of electrical plug-ins sequentially comprise the first discharging positive plug-in, the second discharging negative plug-in and the first discharging negative plug-in;
The fifth-row electrical plug-in comprises the liquid cooling positive plug-in and an intranet communication plug-in sequence;
the sixth row of electrical plug-ins sequentially comprise the first heating plug-in unit and the second heating plug-in unit.
In a preferred embodiment of the present utility model, the internal cavity of the case further comprises:
The first ends of the first main fuse and the second main fuse penetrate through the first side face, the main positive relay is fixed on the lower surface of the inner cavity through bolts, and the main positive relay is close to the first end of the second main fuse and is electrically connected with the second main fuse through the copper bar;
The second charging positive relay is adjacent to the main positive relay and close to the first end of the first main fuse, is fixed on the lower surface of the internal cavity through the bolt and is electrically connected with the second charging positive plug-in through the copper bar;
The first end of the first charging positive plug-in unit passes through the second side surface, the first charging positive relay is adjacent to the second charging positive relay and is close to the first end of the first charging positive plug-in unit, and the first charging positive relay is fixed on the lower surface of the internal cavity through the bolt and is electrically connected with the first charging positive plug-in unit through the copper bar;
The first charging negative relay and the second charging negative relay are arranged opposite to each other, the first charging negative relay and the second charging negative relay are fixed on the lower surface of the internal cavity side by side through the bolts, the first end of the first charging negative plug-in unit and the first end of the second charging negative plug-in unit respectively penetrate through the second side surface, and the first charging negative relay and the second charging negative relay are respectively close to the first end of the first charging negative plug-in unit and the first end of the second charging negative plug-in unit and are respectively electrically connected with the first charging negative plug-in unit and the second charging negative plug-in unit through the copper bars;
The main negative relay is adjacent to the first charging negative relay and the second charging negative relay, and is fixed on the lower surface of the inner cavity through the bolts, the first end of the first discharging negative plug-in unit and the first end of the second discharging negative plug-in unit respectively penetrate through the third side face, and the main negative relay is close to the first discharging negative plug-in unit and the second discharging negative plug-in unit, and is electrically connected with the first discharging negative plug-in unit and the second discharging negative plug-in unit through the copper bars.
In a preferred embodiment of the present utility model, the internal cavity further comprises:
The main positive relay, the first charging positive relay, the second charging positive relay, the first charging negative relay, the second charging negative relay and the main negative relay form a first surrounding area;
The heating negative relay is fixed in the first surrounding area through the bolt and is close to the main negative relay, and the heating negative relay is electrically connected with the first charging negative relay through the copper bar;
The liquid cooling relay with the heating positive relay set gradually in one side of heating negative relay, and pass through the bolt fastening in first surrounding area, the liquid cooling relay with the heating positive relay with first main fuse passes through copper bar electric connection.
In a preferred embodiment of the present utility model, the case further includes:
two pairs of hanging lugs, wherein each pair of hanging lugs is respectively arranged on the upper edge of the inner wall of the opposite side of the box body;
The metal plate is arranged above the driving circuit, opposite sides of the metal plate are respectively fixed on the hanging lugs, a plurality of insulating columns are arranged on the lower surface of the metal plate, and the insulating columns are fixed on copper bars between the first charging positive relay and the first battery positive plug-in unit;
the battery management system is fixed on the upper surface of the metal plate.
The technical scheme has the following advantages or beneficial effects:
1. The utility model adopts double-loop arrangement, so that the internal loop of the high-voltage box can be deleted according to actual requirements;
2. The high-voltage plug-in components on the high-voltage box are reasonable in distribution, so that wires inside the high-voltage box are not interfered with each other, short-circuit faults cannot occur, and the wires are attractive and tidy.
Drawings
Embodiments of the present utility model will now be described more fully with reference to the accompanying drawings. The drawings, however, are for illustration and description only and are not intended as a definition of the limits of the utility model.
FIG. 1 is a schematic diagram of a driving circuit according to an embodiment of the present utility model;
fig. 2-5 are schematic structural views of a high pressure cartridge according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
The utility model comprises a high-voltage box of an electric automobile, wherein as shown in fig. 1, the high-voltage box comprises a box body and a driving circuit arranged in the box body, and a battery management system 1 of a power battery of the electric automobile is also arranged in the box body;
The driving circuit includes:
The first end of the first charging positive relay 2 is connected with the first output end of the battery management system 1, the second end of the first charging positive relay 2 is connected with a charger of the electric automobile through the first charging positive plug-in 3, and the third end of the first charging positive relay 2 is connected with the positive electrode of the power battery through the first battery positive plug-in 4;
The first end of the first charging negative relay 5 is connected with the second output end of the battery management system 1, the second end of the first charging negative relay 5 is connected with a charger through a first charging negative plug-in 6, and the third end of the first charging negative relay 5 is connected with the negative electrode of the power battery through a first battery negative plug-in 7;
the first end of the second charging positive relay 8 is connected with the third output end of the battery management system 1, the second end of the second charging positive relay 8 is connected with a charger through a second charging positive plug-in 9, and the third end of the second charging positive relay 8 is connected with the positive electrode of the power battery through a first battery positive plug-in 4;
The first end of the second charging negative relay 10 is connected with the fourth output end of the battery management system 1, the second end of the second charging negative relay 10 is connected with a charger through a second charging negative plug-in 11, and the third end of the second charging negative relay 10 is connected with the negative electrode of the power battery through a second battery negative plug-in 12.
Specifically, circuit deletion of the high-voltage box cannot be performed according to actual requirements in the prior art; in the above embodiment, the power battery of the electric vehicle is disposed outside the high-voltage box, a parallel dual-circuit is disposed inside the high-voltage box, the first charging positive relay 2 and the first charging negative relay 5 are disposed on the first circuit, and the charger of the electric vehicle is connected with the first charging positive relay 2 and the first charging negative relay 5 through the first charging positive plug-in 3 and the first charging negative plug-in 6 respectively; the power battery is connected to the first charging positive relay 2 and the first charging negative relay 5 through the first battery positive plug-in 4 and the first battery negative plug-in 7, respectively.
In the preferred embodiment of the present utility model, as shown in fig. 1, a first main fuse 13 and a first hall current sensor 14 are sequentially connected in series between a first battery front 4 and a first charging front relay 2.
Specifically, in the above embodiment, in order to ensure the safety of the circuit, a first main fuse 13 is connected to the first battery front connector 4 and the first charging front relay 2, and a first hall current sensor 14 connected in series with the first main fuse 13 is provided in order to monitor the change of the current.
In a preferred embodiment of the present utility model, as shown in fig. 1, the driving circuit further includes:
The first end of the liquid cooling relay 15 is connected with the fifth output end of the driving circuit, the second end of the liquid cooling relay 15 is connected with the liquid cooling plug-in unit 20 through the liquid cooling fuse 19, and the third end of the liquid cooling relay 15 is connected with the first end of the main positive relay 16;
The first end of the main positive relay 16 is connected with the first end of the heating positive relay 21, the second end of the main positive relay 16 is connected with the sixth end output end of the battery management system 1, and the third end of the main positive relay 16 is connected with the positive electrode of the power battery through the second battery positive plug-in 18;
The first end of the main negative relay 17 is connected with the seventh output end of the battery management system 1, the second end of the main negative relay 17 is connected with a motor of the electric automobile through a first discharging negative plug-in 22, and the third end of the main negative relay 17 is connected with the negative electrode of the power battery through a second battery negative plug-in 12;
The first end of the heating positive relay 21 is connected with the positive electrode of the power battery through a first battery positive plug-in 4, the second end of the heating positive relay 21 is connected with the eighth output end of the battery management system 1, and the third end of the heating positive relay 21 is connected with a first heating positive plug-in 24 through a heating fuse 23;
and a first end of the heating negative relay 25 is connected with a ninth output end of the battery management system 1, a second end of the heating negative relay 25 is connected with a second heating positive plug-in 26, and a third end of the heating negative relay 25 is connected with a negative electrode of the power battery through a second battery negative plug-in 12.
Specifically, in the above embodiment, in order to cool the power battery in a high-temperature environment, the high-voltage box is further enabled to be used in a high-temperature environment, a liquid cooling relay 15 is further disposed in the high-voltage box, and a liquid cooling fuse 19 is further disposed between the liquid cooling relay 15 and the liquid cooling plug-in unit 20 in order to ensure circuit safety.
Further, in order to enable the present utility model to be used even in a low-temperature environment, the heating positive relay 21 and the heating negative relay 25 are further provided in the high-voltage box, and the heating positive relay 21 and the heating negative relay 25 are connected to a heating circuit of a power battery of the electric vehicle through the first heating positive plug-in 24 and the second heating positive plug-in 26, thereby heating the power battery.
The relays in the above embodiments can be omitted according to actual use conditions.
In the preferred embodiment of the present utility model, as shown in fig. 4 and 5, a second main fuse 27 and a second hall current sensor 28 are connected in series between the second battery front plug-in 18 and the main positive relay 16 in sequence.
In the preferred embodiment of the present utility model, as shown in fig. 2 and 4, a first main fuse 13 and a first hall current sensor 14 are sequentially connected in series between the first battery front plug-in unit 4 and the first charging front relay 2, and a second main fuse 27 and a second hall current sensor 28 are sequentially connected in series between the second battery front plug-in unit 18 and the main front relay 16;
The outer side of the first side surface of the box body is sequentially provided with a first main fuse 13 and a second main fuse 27;
The second side surface of the box body is adjacent to the first side surface, a first row of electrical plug-ins and a second row of electrical plug-ins which are parallel up and down are arranged on the outer side of the second side surface, and the first row of electrical plug-ins are positioned above the second row of electrical plug-ins;
The first electrical plug-in comprises a first battery positive plug-in 4, a second battery positive plug-in 18, a first charging negative plug-in 6 and a second charging negative plug-in 11 in sequence;
the second row of electrical plug-ins sequentially comprise a second charging positive plug-in 9, a first charging positive plug-in 3, a first battery negative plug-in 7 and a second battery negative plug-in 12;
the first main fuse 13 and the first battery positive plug-in unit 4 are electrically connected through copper bars;
The second main fuse 27 and the second battery positive plug 18 are electrically connected by copper bars.
Specifically, the problem that the short circuit of the high-voltage box can be caused by internal wiring due to unreasonable distribution of plug-in components on the high-voltage box in the prior art is solved; in the above embodiment, as shown in fig. 4 and 5, the insert is disposed around the high-pressure box according to actual use requirements. The first main fuse 13 and the second main fuse 27 are connected in parallel, and are thus commonly designed on the first side of the box; the positive and negative plug-in components and the positive and negative plug-in components that charges of battery all set up on the second side of box, make things convenient for the relay to be connected with electric automobile.
Furthermore, the plug-in unit in the above embodiment can be omitted according to the actual use situation, and the normal use of the high-voltage box is not affected because of the dual-circuit design.
In a preferred embodiment of the present utility model, as shown in fig. 4, a third side surface and a second side surface of the box body are opposite to each other, a third row of electrical connectors, a fourth row of electrical connectors, a fifth row of electrical connectors and a sixth row of electrical connectors are sequentially arranged on the outer side of the third side surface, the third row of electrical connectors is located at the uppermost position, and the sixth row of electrical connectors is located at the lowermost position;
The third row of electrical plug-in units sequentially comprise a charging communication plug-in unit 32 and a whole vehicle communication plug-in unit 33;
The fourth row of electrical connectors sequentially comprises a first discharging positive connector 29, a second discharging positive connector 30, a second discharging negative connector 31 and a first discharging negative connector 22;
the fifth row of electrical plug-ins sequentially comprise a liquid cooling positive plug-in 20 and an intranet communication plug-in 34;
the sixth row of electrical connectors includes, in order, a first heating positive connector 24 and a second positive heating connector 26.
Specifically, in the above embodiment, the charging communication plug-in 32 is further provided, and when the present utility model is used abroad, since the main current battery management system 1 does not support direct communication with the foreign charging pile, the charging communication plug-in 32 connected with the battery management system 1 can be deleted and the whole vehicle communication plug-in 33 can be directly used, so that the cost can be saved.
In a preferred embodiment of the present utility model, as shown in fig. 2, the internal cavity of the case further comprises:
The first ends of the first main fuse 13 and the second main fuse 27 penetrate through the first side surface, the main positive relay 16 is fixed on the lower surface of the inner cavity through bolts, and the main positive relay 16 is close to the first end of the second main fuse 27 and is electrically connected with the second main fuse 27 through copper bars;
The second charging positive relay 8 is adjacent to the main positive relay 16 and is close to the first end of the first main fuse 13, and the second charging positive relay 8 is fixed on the lower surface of the internal cavity through bolts and is electrically connected with the second charging positive plug-in 9 through copper bars;
The first end of the first charging positive plug-in 3 passes through the second side surface, the first charging positive relay 2 is adjacent to the second charging positive relay 8 and is close to the first end of the first charging positive plug-in 3, and the first charging positive relay 2 is fixed on the lower surface of the internal cavity through bolts and is electrically connected with the first charging positive plug-in 3 through copper bars;
The first charging negative relay 5 and the second charging positive relay 8 are oppositely arranged, the first charging negative relay 5 and the second charging negative relay 10 are fixed on the lower surface of the inner cavity side by side through bolts, the first end of the first charging negative plug-in 6 and the first end of the second charging negative plug-in 11 respectively penetrate through the second side surface, the first charging negative relay 5 and the second charging negative relay 10 are respectively close to the first end of the first charging negative plug-in 6 and the first end of the second charging negative plug-in 11, and are respectively electrically connected with the first charging negative plug-in 6 and the second charging negative plug-in 11 through copper bars;
The main negative relay 17 is adjacent to the first charging negative relay 5 and the second charging negative relay 10, and is fixed on the lower surface of the internal cavity through bolts, the first end of the first discharging negative plug-in 22 and the first end of the second discharging negative plug-in 31 respectively penetrate through the third side surface, and the main negative relay 17 is close to the first discharging negative plug-in 22 and the second discharging negative plug-in 31 and is electrically connected with the first discharging negative plug-in 22 and the second discharging negative plug-in 31 through copper bars.
Specifically, in the embodiment described above, the relays are all fixed on the lower surface of the internal cavity of the box body by bolts, and the first charging positive relay 2 and the second charging positive relay 8 are adjacently arranged, and one end of the first charging positive relay 2 is close to the first charging positive plug-in 3, so that wiring is facilitated;
The first charging negative relay 5 and the second charging negative relay 10 are arranged side by side, one end of the first charging negative relay 5 is close to the first charging negative plug-in unit 6, and one end of the second charging negative relay 10 is close to the second charging negative plug-in unit 11;
A heating fuse 23 and a liquid-cooling fuse 19 are also arranged between the main positive relay 16 and the main negative relay 17, and the heating fuse 23 and the liquid-cooling fuse 19 are arranged side by side.
Furthermore, according to the position design of the relay in the embodiment, the wiring inside the high-voltage box can be safer, and interference can not occur between the wiring inside the high-voltage box and the wiring.
In a preferred embodiment of the present utility model, as shown in fig. 2, the internal cavity further comprises:
the main positive relay 16, the first charging positive relay 2, the second charging positive relay 8, the first charging negative relay 5, the second charging negative relay 10 and the main negative relay 17 form a first surrounding area;
The heating negative relay 25 is fixed in the first surrounding area through bolts and is close to the main negative relay 17, and the heating negative relay 25 is electrically connected with the first charging negative relay 5 through copper bars;
The liquid cooling relay 15 and the heating positive relay 21 are sequentially arranged on one side of the heating negative relay 25 and are fixed in the first surrounding area through bolts, and the liquid cooling relay 15 and the heating positive relay 21 are electrically connected with the first main fuse 13 through copper bars.
Specifically, in the above-described embodiment, since the heating positive relay 21, the heating negative relay 25, and the liquid-cooled relay 15 can be omitted according to actual use conditions, they are disposed in the first surrounding area formed by the main positive relay 16, the first charging positive relay 2, the second charging positive relay 8, the first charging negative relay 5, the second charging negative relay 10, and the main negative relay 17; the actual use of the high-pressure box is not affected, and the distribution inside the high-pressure box is more reasonable.
In a preferred embodiment of the present utility model, as shown in fig. 3 and 5, the case further includes:
Two pairs of hanging lugs 35, wherein each pair of hanging lugs 35 is respectively arranged on the upper edges of the inner walls of the opposite sides of the box body;
the metal plate 36, the metal plate 36 is set up above the drive circuit, the opposite side of the metal plate 36 is fixed on the hangers 35 separately, the underpart of the metal plate 36 has multiple insulating columns, the insulating column is fixed on copper bar between first charging positive relay 2 and first battery positive plug-in unit 4 shown;
The battery management system 1 is fixed to the upper surface of the metal plate 36.
Specifically, in the above embodiment, the battery management system 1 is arranged above the inside of the high-voltage box through the metal plate 36, so that the internal space of the high-voltage box is fully utilized, the design cost of the high-voltage box is reduced, and meanwhile, the high-voltage box is compact and small in size, convenient to install and free from occupying too much internal space of the electric automobile.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.
Claims (9)
1. The high-voltage box of the electric automobile is characterized by comprising a box body and a driving circuit arranged in the box body, wherein a battery management system of a power battery of the electric automobile is also arranged in the box body;
the driving circuit includes:
The first end of the first charging positive relay is connected with the first output end of the battery management system, the second end of the first charging positive relay is connected with the charger of the electric automobile through a first charging positive plug-in unit, and the third end of the first charging positive relay is connected with the positive electrode of the power battery through a first battery positive plug-in unit;
The first end of the first charging negative relay is connected with the second output end of the battery management system, the second end of the first charging negative relay is connected with the charger through a first charging negative plug-in unit, and the third end of the first charging negative relay is connected with the negative electrode of the power battery through a first battery negative plug-in unit;
The first end of the second charging positive relay is connected with the third output end of the battery management system, the second end of the second charging positive relay is connected with the charger through a second charging positive plug-in unit, and the third end of the second charging positive relay is connected with the positive electrode of the power battery through the first battery positive plug-in unit;
the first end of the second charging negative relay is connected with the fourth output end of the battery management system, the second end of the second charging negative relay is connected with the charger through a second charging negative plug-in, and the third end of the second charging negative relay is connected with the negative electrode of the power battery through a second battery.
2. The high voltage cartridge of claim 1, wherein a first main fuse and a first hall current sensor are connected in series in sequence between the first battery positive plug and the first charging positive relay.
3. The high voltage cartridge of claim 1, wherein the drive circuit further comprises:
The first end of the liquid cooling relay is connected with the fifth output end of the driving circuit, the second end of the liquid cooling relay is connected with the liquid cooling positive plug-in unit through the liquid cooling fuse, and the third end of the liquid cooling relay is connected with the first end of the main positive relay;
the first end of the main positive relay is connected with the first end of the heating positive relay, the second end of the main positive relay is connected with the sixth end output end of the battery management system, and the third end of the main positive relay is connected with the positive electrode of the power battery through a second battery positive plug-in;
the first end of the main negative relay is connected with the seventh output end of the battery management system, the second end of the main negative relay is connected with the motor of the electric automobile through a first discharging negative plug-in unit, and the third end of the main negative relay is connected with the negative electrode of the power battery through a second battery negative plug-in unit;
The first end of the heating positive relay is connected with the positive electrode of the power battery through the first battery positive plug-in unit, the second end of the heating positive relay is connected with the eighth output end of the battery management system, and the third end of the heating positive relay is connected with the first heating positive plug-in unit through a heating fuse;
The heating negative relay, the first end of heating negative relay is connected the ninth output of battery management system, the second heating positive plug-in components are connected to the second end of heating negative relay, the third end of heating negative relay passes through the second battery negative plug-in components are connected power battery's negative pole.
4. A high voltage cartridge according to claim 3, wherein a second main fuse and a second hall current sensor are connected in series in sequence between the second battery positive plug and the main positive relay.
5. The high voltage cartridge of claim 3, wherein a first main fuse and a first hall current sensor are sequentially connected in series between the first battery positive plug and the first charging positive relay, and a second main fuse and a second hall current sensor are sequentially connected in series between the second battery positive plug and the main positive relay;
The first main fuse and the second main fuse are sequentially arranged on the outer side of the first side face of the box body;
The second side surface of the box body is adjacent to the first side surface, a first row of electrical plug-ins and a second row of electrical plug-ins which are parallel up and down are arranged on the outer side of the second side surface, and the first row of electrical plug-ins are positioned above the second row of electrical plug-ins;
The first row of the electrical plug-ins sequentially comprises the first battery positive plug-in, the second battery positive plug-in, the first charging negative plug-in and the second charging negative plug-in;
The second row of electrical plug-ins sequentially comprise the second charging positive plug-in, the first battery negative plug-in and the second battery negative plug-in;
the first main fuse and the first battery positive plug-in are electrically connected through a copper bar;
The second main fuse and the second battery positive plug are electrically connected through the copper bar.
6. The high voltage box according to claim 5, wherein a third side surface of the box body is opposite to the second side surface, and a third row of electrical plug-ins, a fourth row of electrical plug-ins, a fifth row of electrical plug-ins and a sixth row of electrical plug-ins which are parallel up and down are sequentially arranged on the outer side of the third side surface, the third row of electrical plug-ins is located at the uppermost position, and the sixth row of electrical plug-ins is located at the lowermost position;
the third row of electrical plug-in units sequentially comprise a charging communication plug-in unit and a whole vehicle communication plug-in unit;
The fourth row of electrical plug-ins sequentially comprise a first discharging positive plug-in, a second discharging negative plug-in and the first discharging negative plug-in;
The fifth-row electrical plug-in comprises the liquid cooling positive plug-in and an intranet communication plug-in sequence;
the sixth row of electrical plug-ins sequentially comprise the first heating plug-in unit and the second heating plug-in unit.
7. The high pressure cartridge of claim 6, wherein the interior cavity of the housing further comprises:
The first ends of the first main fuse and the second main fuse penetrate through the first side face, the main positive relay is fixed on the lower surface of the inner cavity through bolts, and the main positive relay is close to the first end of the second main fuse and is electrically connected with the second main fuse through the copper bar;
The second charging positive relay is adjacent to the main positive relay and close to the first end of the first main fuse, is fixed on the lower surface of the internal cavity through the bolt and is electrically connected with the second charging positive plug-in through the copper bar;
The first end of the first charging positive plug-in unit passes through the second side surface, the first charging positive relay is adjacent to the second charging positive relay and is close to the first end of the first charging positive plug-in unit, and the first charging positive relay is fixed on the lower surface of the internal cavity through the bolt and is electrically connected with the first charging positive plug-in unit through the copper bar;
The first charging negative relay and the second charging negative relay are arranged opposite to each other, the first charging negative relay and the second charging negative relay are fixed on the lower surface of the internal cavity side by side through the bolts, the first end of the first charging negative plug-in unit and the first end of the second charging negative plug-in unit respectively penetrate through the second side surface, and the first charging negative relay and the second charging negative relay are respectively close to the first end of the first charging negative plug-in unit and the first end of the second charging negative plug-in unit and are respectively electrically connected with the first charging negative plug-in unit and the second charging negative plug-in unit through the copper bars;
The main negative relay is adjacent to the first charging negative relay and the second charging negative relay, and is fixed on the lower surface of the inner cavity through the bolts, the first end of the first discharging negative plug-in unit and the first end of the second discharging negative plug-in unit respectively penetrate through the third side face, and the main negative relay is close to the first discharging negative plug-in unit and the second discharging negative plug-in unit, and is electrically connected with the first discharging negative plug-in unit and the second discharging negative plug-in unit through the copper bars.
8. The high pressure cartridge of claim 7, wherein the internal cavity further comprises:
The main positive relay, the first charging positive relay, the second charging positive relay, the first charging negative relay, the second charging negative relay and the main negative relay form a first surrounding area;
The heating negative relay is fixed in the first surrounding area through the bolt and is close to the main negative relay, and the heating negative relay is electrically connected with the first charging negative relay through the copper bar;
The liquid cooling relay with the heating positive relay set gradually in one side of heating negative relay, and pass through the bolt fastening in first surrounding area, the liquid cooling relay with the heating positive relay with first main fuse passes through copper bar electric connection.
9. The high pressure cartridge of claim 1, wherein the housing further comprises:
two pairs of hanging lugs, wherein each pair of hanging lugs is respectively arranged on the upper edge of the inner wall of the opposite side of the box body;
The metal plate is arranged above the driving circuit, opposite sides of the metal plate are respectively fixed on the hanging lugs, a plurality of insulating columns are arranged on the lower surface of the metal plate, and the insulating columns are fixed on copper bars between the first charging positive relay and the first battery positive plug-in unit;
the battery management system is fixed on the upper surface of the metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322516067.8U CN221090507U (en) | 2023-09-15 | 2023-09-15 | High-voltage box of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322516067.8U CN221090507U (en) | 2023-09-15 | 2023-09-15 | High-voltage box of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221090507U true CN221090507U (en) | 2024-06-07 |
Family
ID=91316616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322516067.8U Active CN221090507U (en) | 2023-09-15 | 2023-09-15 | High-voltage box of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221090507U (en) |
-
2023
- 2023-09-15 CN CN202322516067.8U patent/CN221090507U/en active Active
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