CN210491370U - Electric appliance box - Google Patents
Electric appliance box Download PDFInfo
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- CN210491370U CN210491370U CN201921685871.6U CN201921685871U CN210491370U CN 210491370 U CN210491370 U CN 210491370U CN 201921685871 U CN201921685871 U CN 201921685871U CN 210491370 U CN210491370 U CN 210491370U
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Abstract
The utility model provides an electrical box, it includes: the high-voltage circuit breaker comprises a first shell used for installing a high-voltage circuit and a second shell used for installing a low-voltage circuit, wherein the first shell is arranged at the top end of the second shell. The utility model has the advantages that: the first shell and the second shell are overlapped, and a three-dimensional integrated design is adopted, so that the occupied area in the battery box is reduced, and the space utilization rate of the battery box is effectively improved.
Description
Technical Field
The utility model relates to an electric car technical field especially relates to an electrical apparatus box.
Background
With the great popularization of new energy automobiles, the electric logistics automobiles serve as the main force of urban short-distance transportation, and the automobile holding capacity is very large. The logistics vehicles are configured more at present, and the main vehicle types include PX, 2T, 3T, 5T, V1 and the like according to different nuclear loading capacity. As a core electronic control unit of a power battery pack, each power battery box needs to be independently designed with a high-voltage electrical box, so that the types and the configuration forms of the electrical boxes are various, and the electrical boxes do not conform to the design principles of generalization and standardization. At present, main control electric devices in a battery box of the electric logistics vehicle are mostly distributed and distributed, and the space occupancy rate is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art not enough, provide an electrical apparatus box.
The utility model provides an above-mentioned technical problem's technical scheme as follows: an electrical box, comprising: the high-voltage circuit breaker comprises a first shell used for installing a high-voltage circuit and a second shell used for installing a low-voltage circuit, wherein the first shell is arranged at the top end of the second shell.
The utility model has the advantages that: the first shell and the second shell are overlapped, and a three-dimensional integrated design is adopted, so that the occupied area in the battery box is reduced, and the space utilization rate of the battery box is effectively improved.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Furthermore, a slow charging negative relay, a fast charging negative relay, a slow charging positive relay, a fast charging positive relay, a pair of connecting copper bars, a high-voltage current sensor, a high-voltage control plug-in and a high-voltage detection plug-in are arranged on the first shell,
the slow charging negative relay, the fast charging negative relay, the slow charging positive relay and the fast charging positive relay are sequentially and adjacently arranged in the first shell;
the pair of connecting copper bars are respectively arranged on the inner walls of the two ends of the first shell;
the high-voltage current sensor, the high-voltage control plug-in and the high-voltage detection plug-in are all arranged on the outer side wall of the first shell.
The beneficial effect of adopting the further scheme is that: the high-voltage circuit is arranged in the first shell, so that the installation and maintenance of high-voltage circuit components are facilitated, the working efficiency is improved, and the space occupancy rate of the electric appliance box is reduced.
Further, first casing is the cavity box structure be provided with a plurality ofly in the first casing and be used for the installation fill the negative relay slowly fill the negative relay soon fill the negative relay slowly fill positive relay and fill the first mounting groove of positive relay soon, fill the negative relay slowly fill the positive relay and fill the positive relay soon and correspondingly set up a plurality ofly respectively in the first mounting groove, be provided with on the lateral wall of first casing and be used for the installation high voltage current sensor high voltage control plug-in components and high voltage detection plug-in components's a plurality of first support shells, high voltage current sensor high voltage control plug-in components and high voltage detection plug-in components correspondingly set up a plurality ofly respectively in the first support shell.
The beneficial effect of adopting the further scheme is that: the arrangement of first mounting groove and first support shell for high-voltage circuit components and parts are installed in first mounting groove and first support shell with the adaptation, and the stability of high-voltage circuit components and parts in first casing is improved to the design of electrical part formula of sinking, prevents to bump between the high-voltage circuit components and parts, improves electrical apparatus box's reliability.
Furthermore, a plurality of first buckles used for clamping the cables are respectively arranged at the bottoms of the first mounting grooves, and through holes used for penetrating the cables are formed in the bottoms of the first mounting grooves.
The beneficial effect of adopting the further scheme is that: the hidden design of pencil improves the space utilization in the electrical apparatus box.
Furthermore, a second buckle used for being connected with a second shell is arranged at the bottom end of the first shell, a groove matched with the second buckle is formed in the top end of the second shell, and the second buckle is inserted into the groove;
be provided with first arch on the left and right sides inner wall of first casing respectively, be provided with the second arch on the left and right sides inner wall of second casing respectively, first arch sets up the bellied top of second, first arch with the second arch passes through fixing bolt and connects.
The beneficial effect of adopting the further scheme is that: the buckle groove at the edge of the two layers of shells of the first shell and the second shell is used for positioning, the movement in the X/Y direction between the two layers is restrained, then two fixing bolts penetrate between the two layers respectively, the fixation in the longitudinal direction is realized, the stability of the shell is improved, and the reliability of the electric appliance box is improved.
Furthermore, a pre-charging relay, a heating current sensor, a heating relay, a heating fuse, a heating plug-in unit, a low-voltage detection plug-in unit and a pre-charging resistor are arranged on the second shell,
the pre-charging resistor, the pre-charging relay, the heating current sensor, the heating relay and the heating fuse are sequentially and adjacently arranged in the second shell;
the heating plug-in unit and the low-voltage detection plug-in unit are arranged on the outer side wall of the second shell.
The beneficial effect of adopting the further scheme is that: the low-voltage loop is arranged in the second shell, so that the installation and maintenance of high-voltage loop components are facilitated, the working efficiency is improved, and the space occupancy rate of the electric appliance box is reduced.
Further, the second casing is hollow box structure be provided with a plurality ofly in the second casing and be used for the installation pre-charge resistance pre-charge relay heating current sensor heating relay and heating fuse's a plurality of second mounting grooves, pre-charge resistance pre-charge relay heating current sensor heating relay and heating fuse set up in a plurality of respectively correspondingly in the second mounting groove, be provided with on the lateral wall of second casing and be used for the installation heating plug-in components and a plurality of second of low pressure detection plug-in components support the shell, heating plug-in components and low pressure detection plug-in components set up in a plurality of respectively correspondingly in the second supports the shell.
The beneficial effect of adopting the further scheme is that: the second mounting groove and the second support the setting of shell for low pressure return circuit components and parts are installed in second mounting groove and second support the shell with the adaptation, and the stability of low pressure return circuit components and parts in the second casing is improved to the design of electrical apparatus formula of sinking, prevents to bump between the low pressure return circuit components and parts, improves the reliability of electrical apparatus box.
Further, the pre-charging relay is connected in series with the pre-charging resistor.
The beneficial effect of adopting the further scheme is that: because the inside of the electric equipment such as a motor, electric control equipment and the like in the whole vehicle is provided with a large capacitor circuit, the pre-charging relay and the pre-charging resistor are connected in series and then are connected in parallel with the main positive relay, and the pre-charging relay and the pre-charging resistor play a role in active safety protection in the charging and discharging processes, so that the high-voltage circuit contains the pre-charging circuit, and the instant electric safety of the high-voltage circuit is ensured.
Further, still include: the first reinforcing ribs are arranged on the inner wall of the second shell, a plurality of fixing plates for mounting an electrical box are arranged on the outer side wall of the second shell, fixing holes are formed in the fixing plates, and the steel sleeves are embedded in the fixing holes;
the second reinforcing rib is arranged at the joint of the fixing plate and the outer side wall of the second shell.
The beneficial effect of adopting the further scheme is that: and a reinforcing rib structure is additionally arranged on the inner wall of the second shell, so that the integral rigidity of the structure is enhanced. The design of inlaying the steel bushing is added to the fixing hole in the outer side of the electrical box, the overall fixing strength is improved, and meanwhile, the local reinforcing ribs are added, so that the testing requirement of the vibration of the battery system is met.
Further, still include: the cover body is arranged at the top end of the first shell;
the left and right sides inner wall of lid is provided with the third arch respectively, be provided with the fourth arch on the left and right sides inner wall of first casing respectively, the third arch sets up the bellied top of fourth, the third arch with the fourth arch passes through fixing bolt and connects.
The beneficial effect of adopting the further scheme is that: the setting of lid for sealed electrical apparatus box prevents that external environment from disturbing the internal device of electrical apparatus box, prevents that electrical apparatus box from being polluted by the dust, improves electrical apparatus box's reliability.
Advantages of additional aspects of the invention 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 invention.
Drawings
Fig. 1 is one of schematic structural diagrams of an electrical box provided by an embodiment of the present invention.
Fig. 2 is a second schematic structural diagram of an electrical box according to an embodiment of the present invention.
Fig. 3 is a third schematic structural diagram of the electrical box according to the embodiment of the present invention.
Fig. 4 is a fourth schematic structural diagram of the electrical box according to an embodiment of the present invention.
Fig. 5 is a fifth schematic structural view of an electrical box according to an embodiment of the present invention.
Fig. 6 is a sixth schematic structural view of an electrical box according to an embodiment of the present invention.
Fig. 7 is a seventh schematic structural diagram of an electrical box according to an embodiment of the present invention.
Fig. 8 is an eighth schematic structural view of an electrical box according to an embodiment of the present invention.
Fig. 9 is a ninth schematic structural diagram of an electrical box according to an embodiment of the present invention.
Fig. 10 is a tenth schematic structural diagram of an electrical box according to an embodiment of the present invention.
Fig. 11 is an eleventh schematic structural view of an electrical box according to an embodiment of the present invention.
Fig. 12 is a twelfth schematic structural view of the electrical box according to an embodiment of the present invention.
Fig. 13 is a thirteen schematic structural diagram of the electrical box according to the embodiment of the present invention.
Fig. 14 is a fourteenth schematic structural diagram of the electrical box according to an embodiment of the present invention.
The reference numbers illustrate: 1-a first housing; 2-a second housing; 3-a slow charging negative relay; 4-a fast charge negative relay; 5-slow charging of the positive relay; 6-quick charge positive relay; 7-connecting the copper bars; 8-a high voltage current sensor; 9-high voltage control plug-in; 10-high voltage test plug-in; 11-a first mounting groove; 12-a first support shell; 13-a first snap; 14-a through hole; 15-a second buckle; 16-a groove; 17-a first projection; 18-a pre-charge relay; 19-heating current sensor; 20-a heating relay; 21-heating a fuse; 22-heating the insert; 23-low voltage detection plug-in; 24-a pre-charge resistor; 25-a second mounting groove; 26-a second support shell; 27-a first reinforcing rib; 28-a second reinforcing rib; 29-steel jacket; 30-fixing the plate; 31-a fixation hole; 32-a cover body; 33-fourth projection.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 14, fig. 1 is a schematic structural diagram of an electrical box according to an embodiment of the present invention. Fig. 2 is a second schematic structural diagram of an electrical box according to an embodiment of the present invention. Fig. 3 is a third schematic structural diagram of the electrical box according to the embodiment of the present invention. Fig. 4 is a fourth schematic structural diagram of the electrical box according to an embodiment of the present invention. Fig. 5 is a fifth schematic structural view of an electrical box according to an embodiment of the present invention. Fig. 6 is a sixth schematic structural view of an electrical box according to an embodiment of the present invention. Fig. 7 is a seventh schematic structural diagram of an electrical box according to an embodiment of the present invention. Fig. 8 is an eighth schematic structural view of an electrical box according to an embodiment of the present invention. Fig. 9 is a ninth schematic structural diagram of an electrical box according to an embodiment of the present invention. Fig. 10 is a tenth schematic structural diagram of an electrical box according to an embodiment of the present invention. Fig. 11 is an eleventh schematic structural view of an electrical box according to an embodiment of the present invention. Fig. 12 is a twelfth schematic structural view of the electrical box according to an embodiment of the present invention. Fig. 13 is a thirteen schematic structural diagram of the electrical box according to the embodiment of the present invention. Fig. 14 is a fourteenth schematic structural diagram of the electrical box according to an embodiment of the present invention.
The embodiment of the utility model provides an electrical apparatus box, it includes: the high-voltage circuit breaker comprises a first shell 1 for mounting a high-voltage circuit and a second shell 2 for mounting a low-voltage circuit, wherein the first shell 1 is arranged at the top end of the second shell 2.
The first shell and the second shell are overlapped, and a three-dimensional integrated design is adopted, so that the occupied area in the battery box is reduced, and the space utilization rate of the battery box is effectively improved.
Wherein, three-dimensional integrated form is for prior art, and three-dimensional means the utility model discloses an electrical apparatus box part sets up in high layering forms a whole, is different from the mode that the part plane was laid among the prior art. The integration is that the utility model discloses an electrical apparatus box part is integrated to form a whole in a casing, is different from the mode that the part dispersion was in different positions among the prior art.
Further, a slow charging negative electrode relay 3, a fast charging negative electrode relay 4, a slow charging positive electrode relay 5, a fast charging positive electrode relay 6, a pair of connecting copper bars 7, a high-voltage current sensor 8, a high-voltage control plug-in 9 and a high-voltage detection plug-in 10 are arranged on the first shell 1,
the slow charging negative relay 3, the fast charging negative relay 4, the slow charging positive relay 5 and the fast charging positive relay 6 are sequentially and adjacently arranged in the first shell 1;
the pair of connecting copper bars 7 are respectively arranged on the inner walls of the two ends of the first shell 1;
the high-voltage current sensor 8, the high-voltage control plug-in unit 9 and the high-voltage detection plug-in unit 10 are all arranged on the outer side wall of the first shell 1.
The high-voltage circuit is arranged in the first shell, so that the installation and maintenance of high-voltage circuit components are facilitated, the working efficiency is improved, and the space occupancy rate of the electric appliance box is reduced.
1. A three-dimensional integrated form; 2. the space utilization rate is high 3. the universality is strong; 4. the production efficiency is high; 5. the versatility; 6. the structural strength is high; 7. the process operability is strong; 1. the three-dimensional integrated design is adopted, so that the occupied area in the battery box is reduced, and the space utilization rate of the battery box is effectively improved; 2. the sinking type design of the electric device and the hidden type design of the wiring harness improve the space utilization rate in the electric box; 3. the power battery box is suitable for the logistics vehicle; 4. the upper layer and the lower layer are designed, two layers of double stations are prefabricated independently, and the production efficiency is high; 5. the battery has the advantages of common charging and quick charging design, and multiple functions; 6. the shell is designed in a reinforced mode, and meanwhile, the strength of parts and the system integration assembling strength are considered; 7. multiple technological designs can meet the design requirements and the assembly technological requirements simultaneously.
An object of the utility model is to provide a high-voltage electrical apparatus box that space utilization is high, the motorcycle type commonality is good, functional strong, the technology practicality is strong.
The electrical box adopts the three-dimensional integrated design of upper and lower two-layer, and the upper portion is high-voltage circuit, mainly realizes battery system high-voltage electricity control function. The main relay comprises a slow charging anode, a slow charging cathode, a fast charging anode and a fast charging cathode, a main loop is connected by adopting a hard copper bar, and the sectional area size of the copper bar meets the requirement of the system on bearing overcurrent. Meanwhile, the Hall current sensor is integrated in the upper layer structure, so that the real-time monitoring of the system current can be realized, and the sensor adopts a vertical fixed structure in structure, so that the internal space of the electric appliance box can be further saved.
The lower layer of the electrical box is a low-voltage loop which mainly realizes the functions of heating and pre-charging the battery system. The electric devices comprise a pre-charging relay, a pre-charging resistor, a heating relay, a heating fuse and a current sensor, and the main electric devices are designed in a sinking mode and fixed mode, so that the space utilization rate of the lower shell can be effectively improved.
The side of the electrical box is provided with a mounting port of a high-voltage connector and a low-voltage connector, the side of the shell is provided with a plastic buckle structure, and the high-voltage connector and the low-voltage connector are fixed on the side wall of the electrical box in a three-dimensional structure, so that the space of the electrical box in a battery pack can be saved, and the operation convenience of plug-in installation can be improved.
The key point of the utility model
(1) The electrical box adopts a double-layer three-dimensional integrated design, effectively saves the space in the power battery pack, and is suitable for the power battery box of the logistics vehicle with compact space at present;
(2) the electrical box is an electrical integration unit of the power battery box, and carries out system integration on main high-voltage and low-voltage electrical devices. The design integrates two functions of slow charging and fast charging, and meanwhile, the electric device adopts a compatible scheme and is suitable for the electric logistics vehicle;
(3) the electric device is fixedly installed by adopting a sinking scheme, the wiring harness adopts a hidden wiring scheme, and the utilization rate of the space in the shell is high;
(4) the upper layer and the lower layer are independently prefabricated in double stations, the stations are assembled in parallel and finally assembled, and the production efficiency is high;
(5) the shell is designed in a reinforced mode, and the strength of parts and the system integration assembly strength are both considered;
in the battery box of the electric logistics vehicle, due to the particularity of the module assembly structure, the battery box is limited in size and limited in size along the X/Y direction, the requirement that parts in the electric box are designed in a flat mode cannot be met, but the Z direction size in the box is sufficient, and the three-dimensional design of the electric box can be met structurally. According to the particularity of electronic commodity circulation car battery box, the event the utility model discloses a design of the three-dimensional integrated form of electrical apparatus box takes into account assembly, mode of connection, the operation convenience of electrical apparatus box in the incasement simultaneously.
The effects of the utility model
(1) The double-layer three-dimensional integrated design improves the space utilization rate in the battery box;
(2) a quick charge relay is added, compatibility design is achieved, slow charge and quick charge functions are met, and the system can be used for selecting multiple vehicle types;
(3) double-layer independent parallel prefabrication production is realized, and the production efficiency is high;
(4) the low-voltage loop is additionally provided with a heating current sensor, so that the safety of the battery system is improved.
The main structure of the electrical box is divided into three parts: the electric appliance box comprises an electric appliance box cover (namely a cover body), a high-voltage integrated module (namely a first shell body) and a low-voltage integrated module (namely a second shell body).
When the high-voltage integrated module and the low-voltage integrated module are assembled, the high-voltage integrated module and the low-voltage integrated module are firstly positioned through the buckle grooves on the edges of the two layers of shells, the movement in the X/Y direction between the two layers is restrained, then two fixing bolts penetrate between the two layers respectively, and finally the two layers are fastened according to standard torque to complete the assembly of the two modules.
After the high-voltage integrated module and the low-voltage integrated module are assembled, the high-voltage integrated module and the low-voltage integrated module are assembled with the electric appliance box cover, the electric appliance box cover and the buckle groove at the edge of the two layers of shells of the high-voltage integrated module are positioned to restrict the movement in the X/Y direction between the two layers, then two fixing bolts (which are arranged diagonally with the fixing bolts of the high-voltage integrated module and the low-voltage integrated module) penetrate between the two layers respectively, and finally the electric appliance box is fastened according to standard torque to complete the final assembly.
Further, the first shell 1 is a hollow box structure, a plurality of first mounting grooves 11 for mounting the slow charging negative relay 3, the fast charging negative relay 4, the slow charging positive relay 5 and the fast charging positive relay 6 are arranged in the first shell 1, the slow charging negative pole relay 3, the fast charging negative pole relay 4, the slow charging positive pole relay 5 and the fast charging positive pole relay 6 are respectively and correspondingly arranged in the first installation grooves 11, a plurality of first supporting shells 12 for mounting the high-voltage current sensor 8, the high-voltage control plug-in 9 and the high-voltage detection plug-in 10 are arranged on the outer side wall of the first shell 1, the high-voltage current sensor 8, the high-voltage control plug-in unit 9 and the high-voltage detection plug-in unit 10 are respectively and correspondingly arranged in the plurality of first support shells 12.
The arrangement of first mounting groove and first support shell for high-voltage circuit components and parts are installed in first mounting groove and first support shell with the adaptation, and the stability of high-voltage circuit components and parts in first casing is improved to the design of electrical part formula of sinking, prevents to bump between the high-voltage circuit components and parts, improves electrical apparatus box's reliability.
Specifically, the high-voltage integrated module simultaneously designs two functions of slow charging and quick charging, including a slow charging negative relay, a fast charging negative relay, a slow charging positive relay, a fast charging positive relay, a connecting copper bar, a high-voltage module shell (namely, a first shell), a high-voltage current sensor, a high-voltage control plug-in unit and a high-voltage detection plug-in unit. The current pure electric vehicle has a standard configuration of common charging, the charging mode is suitable for being applied to the trough of a power grid or the vehicle during the load stop at night, the charging current is small, the charging is stable and safe, but the charging time is slightly long, and the general charging time is about more than 6 hours. The quick charging is the optional configuration of a part of logistics vehicles at present, and the large current is adopted to quickly supplement the electric quantity to the battery system, and generally 80% of the electric quantity can be reached within 1-1.5 hours. The realization of the two charging functions requires that a common charging relay and a quick charging relay are configured in a battery system, and the common charging relay and the quick charging relay respectively comprise a positive relay and a negative relay, play a role in switching on and switching off a high-voltage loop and are a main switch of the high-voltage loop. According to the current and voltage resistance requirements of a battery system, a high-voltage loop of the relay is connected by adopting a hard copper bar, and the sectional area meets the overcurrent requirement of the system. The high voltage current sensor serves to dynamically detect the system current and provide the relevant parameters to the BMS system. The high voltage control plug-in and the high voltage detection plug-in transmit parameters such as voltage and temperature of the high voltage module to the BMS system.
Further, a plurality of first buckles 13 for clamping the cable are respectively arranged at the bottom of the first mounting grooves 11, and a through hole 14 for penetrating the cable is arranged at the bottom of the first mounting groove 11.
The hidden design of pencil improves the space utilization in the electrical apparatus box.
Specifically, the module relay adopts a sinking type fixing design, and the design mode simultaneously considers the installation of electric devices and the wiring of wire harnesses. Design according to the appearance profile of relay and sink size and height, simultaneously in the regional buckle of having designed of sinking of casing lower part relay, accord with the wiring route of pencil. And the wiring is arranged at the bottom of the shell, the internal wiring harness is led out from the nearest wire outlet, and the wiring is arranged at the bottom of the shell. Avoid pencil and inside electrical part friction to produce damaged short circuit to the casing is inside need not to increase characteristics such as support that the pencil was fixed to be used, has reduced casing inner space, makes the whole volume of electrical apparatus box reduce, can make full use of battery box space. The module is independently operated during module assembly, and the main wiring harness is concentrated on the lower part of the shell, so that the wiring assembly is facilitated. The plug-in components are vertically fixed on the side wall of the shell, so that the plane size of the module is reduced, and the operation of the plug-in components is facilitated when the battery system is assembled.
Further, a second buckle 15 for connecting the second housing 2 is arranged at the bottom end of the first housing 1, a groove 16 adapted to the second buckle 15 is arranged at the top end of the second housing 2, and the second buckle 15 is inserted into the groove 16;
be provided with first arch 17 on the left and right sides inner wall of first casing 1 respectively, it is protruding to be provided with the second on the left and right sides inner wall of second casing 2 respectively, first arch 17 sets up the bellied top of second, first arch 17 with the second is protruding to pass through fixing bolt and is connected.
The buckle groove through the two-layer shell edge of first casing 1 and second casing 2 is fixed a position, retrains the removal of X/Y direction between two-layer, then penetrates two fixing bolt respectively between two-layer, realizes the fixed of longitudinal direction, improves the stability of casing, improves the reliability of electrical apparatus box.
Further, a pre-charging relay 18, a heating current sensor 19, a heating relay 20, a heating fuse 21, a heating plug 22, a low voltage detection plug 23 and a pre-charging resistor 24 are arranged on the second housing 2,
the pre-charging resistor 24, the pre-charging relay 18, the heating current sensor 19, the heating relay 20 and the heating fuse 21 are sequentially and adjacently arranged in the second housing 2;
the heating insert 22 and the low voltage detection insert 23 are both disposed on the outer side wall of the second housing 2.
The low-voltage loop is arranged in the second shell, so that the installation and maintenance of high-voltage loop components are facilitated, the working efficiency is improved, and the space occupancy rate of the electric appliance box is reduced.
Specifically, the low-voltage integrated module has pre-charging and heating functions, plays a role in assisting and protecting the high-voltage circuit, and mainly comprises the following components: the low-voltage module comprises a pre-charging relay, a heating current sensor, a heating relay, a heating fuse, a low-voltage module shell (namely a second shell), a heating plug-in unit, a low-voltage detection plug-in unit and a pre-charging resistor. Because a large capacitor circuit is arranged in the electric equipment such as a motor and electric control equipment in the whole vehicle, in order to ensure the electric safety at the moment of switching on the high-voltage circuit, the high-voltage circuit must contain a pre-charging circuit, namely a pre-charging relay and a pre-charging resistor are connected in series and then connected in parallel with a main positive relay, so that the active safety protection effect is achieved in the charging and discharging processes. The heating fuse plays overcurrent protection's effect to pencil and high-voltage components and parts in the high-voltage circuit, when heavy current or short-circuit current passed through promptly, and in time fusing does not receive the harm because of the impact of heavy current in order to protect high-voltage components and parts, prevents that the high-voltage pencil from because the intensification that short circuit or overcurrent lead to fuses even and catching fire, plays passive safety protection's effect in the high-voltage circuit. The heating current sensor is used for detecting the precision of current passing through the heating loop and transmitting relevant data to the BMS system for monitoring in real time. The heating plug-in and the 19-low voltage detection plug-in realize the information and signal interaction function of the electric appliance box and the power battery system.
Further, the second housing 2 is a hollow box structure, a plurality of second mounting grooves 25 for mounting the pre-charging resistor 24, the pre-charging relay 18, the heating current sensor 19, the heating relay 20 and the heating fuse 21 are disposed in the second housing 2, the pre-charging resistor 24, the pre-charging relay 18, the heating current sensor 19, the heating relay 20 and the heating fuse 21 are respectively and correspondingly disposed in the plurality of second mounting grooves 25, a plurality of second supporting cases 26 for mounting the heating plug 22 and the low voltage detecting plug 23 are disposed on an outer side wall of the second housing 2, and the heating plug 22 and the low voltage detecting plug 23 are respectively and correspondingly disposed in the plurality of second supporting cases 26.
The second mounting groove and the second support the setting of shell for low pressure return circuit components and parts are installed in second mounting groove and second support the shell with the adaptation, and the stability of low pressure return circuit components and parts in the second casing is improved to the design of electrical apparatus formula of sinking, prevents to bump between the low pressure return circuit components and parts, improves the reliability of electrical apparatus box.
Further, the pre-charge relay 18 is connected in series with the pre-charge resistor 24.
Because the inside of the electric equipment such as a motor, electric control equipment and the like in the whole vehicle is provided with a large capacitor circuit, the pre-charging relay and the pre-charging resistor are connected in series and then are connected in parallel with the main positive relay, and the pre-charging relay and the pre-charging resistor play a role in active safety protection in the charging and discharging processes, so that the high-voltage circuit contains the pre-charging circuit, and the instant electric safety of the high-voltage circuit is ensured.
Further, still include: the first reinforcing ribs 27 are arranged on the inner wall of the second shell 2, the outer side wall of the second shell 2 is provided with a plurality of fixing plates 30 for mounting an electrical box, the fixing plates 30 are provided with fixing holes 31, and the steel sleeves 29 are embedded in the fixing holes 31;
the second reinforcing rib 28 is disposed at the connection position of the fixing plate 30 and the outer side wall of the second housing 2.
And a reinforcing rib structure is additionally arranged on the inner wall of the second shell, so that the integral rigidity of the structure is enhanced. The design of inlaying the steel bushing is added to the fixing hole in the outer side of the electrical box, the overall fixing strength is improved, and meanwhile, the local reinforcing ribs are added, so that the testing requirement of the vibration of the battery system is met.
Specifically, the low-voltage integrated module is positioned at the lowest layer of the three-dimensional integrated electrical box, plays a vital role in the structural strength of the whole electrical box, and the reinforcing rib structure is additionally arranged on the inner wall of the lower-layer shell to enhance the integral rigidity of the structure. The design of inlaying the steel bushing is added to the fixing hole in the outer side of the electrical box, the overall fixing strength is improved, and meanwhile, the local reinforcing ribs are added, so that the testing requirement of the vibration of the battery system is met. And the wiring harness is also arranged by adopting a hidden design, so that the space utilization rate and the process operation convenience are improved.
Further, still include: a cover 32, wherein the cover 32 is arranged at the top end of the first shell 1;
be provided with the third arch on the left and right sides inner wall of lid 32 respectively, be provided with fourth arch 33 on the left and right sides inner wall of first casing 1 respectively, the third arch sets up the top of fourth arch 33, the third arch with fourth arch 33 passes through fixing bolt and connects.
The setting of lid for sealed electrical apparatus box prevents that external environment from disturbing the internal device of electrical apparatus box, prevents that electrical apparatus box from being polluted by the dust, improves electrical apparatus box's reliability.
It should be noted that the connection relationship between the electrical components in the electrical box and the functions of the electrical components are the prior art, and are not described herein again.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An electrical box, comprising: a first housing for mounting a high-pressure circuit, a second housing for mounting a low-pressure circuit,
the first shell is arranged at the top end of the second shell.
2. The electrical box of claim 1, wherein the first housing is provided with a slow charging negative relay, a fast charging negative relay, a slow charging positive relay, a fast charging positive relay, a pair of connecting copper bars, a high voltage current sensor, a high voltage control plug-in and a high voltage detection plug-in,
the slow charging negative relay, the fast charging negative relay, the slow charging positive relay and the fast charging positive relay are sequentially and adjacently arranged in the first shell;
the pair of connecting copper bars are respectively arranged on the inner walls of the two ends of the first shell;
the high-voltage current sensor, the high-voltage control plug-in and the high-voltage detection plug-in are all arranged on the outer side wall of the first shell.
3. The electrical box of claim 2, wherein the first housing is a hollow box structure, a plurality of first mounting grooves for mounting the slow charging negative relay, the fast charging negative relay, the slow charging positive relay and the fast charging positive relay are arranged in the first shell, the slow charging negative relay, the fast charging negative relay, the slow charging positive relay and the fast charging positive relay are respectively and correspondingly arranged in the first mounting grooves, a plurality of first supporting shells for mounting the high-voltage current sensor, the high-voltage control plug-in and the high-voltage detection plug-in are arranged on the outer side wall of the first shell, the high-voltage current sensor, the high-voltage control plug-in and the high-voltage detection plug-in are respectively and correspondingly arranged in the first support shells.
4. The electrical box as claimed in claim 3, wherein a plurality of first mounting grooves are respectively provided at the bottom thereof with first clips for holding cables, and the bottom thereof is provided with a through hole for passing the cables therethrough.
5. The electrical box as claimed in claim 1, wherein the bottom end of the first housing is provided with a second buckle for connecting with a second housing, the top end of the second housing is provided with a groove adapted to the second buckle, and the second buckle is inserted into the groove;
be provided with first arch on the left and right sides inner wall of first casing respectively, be provided with the second arch on the left and right sides inner wall of second casing respectively, first arch sets up the bellied top of second, first arch with the second arch passes through fixing bolt and connects.
6. The electrical box as claimed in claim 1, wherein a pre-charging relay, a heating current sensor, a heating relay, a heating fuse, a heating plug-in unit, a low voltage detection plug-in unit and a pre-charging resistor are disposed on the second housing,
the pre-charging resistor, the pre-charging relay, the heating current sensor, the heating relay and the heating fuse are sequentially and adjacently arranged in the second shell;
the heating plug-in unit and the low-voltage detection plug-in unit are arranged on the outer side wall of the second shell.
7. The electrical box as claimed in claim 6, wherein the second casing is a hollow box structure, a plurality of second mounting slots are disposed in the second casing for mounting the pre-charging resistor, the pre-charging relay, the heating current sensor, the heating relay and the heating fuse, the pre-charging resistor, the pre-charging relay, the heating current sensor, the heating relay and the heating fuse are respectively disposed in the second mounting slots correspondingly, a plurality of second supporting shells are disposed on an outer sidewall of the second casing for mounting the heating plug-in unit and the low voltage detecting plug-in unit, and the heating plug-in unit and the low voltage detecting plug-in unit are respectively disposed in the second supporting shells correspondingly.
8. The electrical box of claim 6, wherein the pre-charge relay is connected in series with the pre-charge resistor.
9. The electrical box of claim 1, further comprising: the first reinforcing ribs are arranged on the inner wall of the second shell, a plurality of fixing plates for mounting an electrical box are arranged on the outer side wall of the second shell, fixing holes are formed in the fixing plates, and the steel sleeves are embedded in the fixing holes;
the second reinforcing rib is arranged at the joint of the fixing plate and the outer side wall of the second shell.
10. The electrical box of claim 1, further comprising: the cover body is arranged at the top end of the first shell;
the left and right sides inner wall of lid is provided with the third arch respectively, be provided with the fourth arch on the left and right sides inner wall of first casing respectively, the third arch sets up the bellied top of fourth, the third arch with the fourth arch passes through fixing bolt and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921685871.6U CN210491370U (en) | 2019-10-10 | 2019-10-10 | Electric appliance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921685871.6U CN210491370U (en) | 2019-10-10 | 2019-10-10 | Electric appliance box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210491370U true CN210491370U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921685871.6U Active CN210491370U (en) | 2019-10-10 | 2019-10-10 | Electric appliance box |
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| Country | Link |
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| CN (1) | CN210491370U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110536572A (en) * | 2019-10-10 | 2019-12-03 | 北京普莱德新能源电池科技有限公司 | A kind of electrical appliance kit |
| CN113922007A (en) * | 2021-09-17 | 2022-01-11 | 东风时代(武汉)电池系统有限公司 | Split type double-layer BDU |
| WO2022062526A1 (en) * | 2020-09-22 | 2022-03-31 | 中国第一汽车股份有限公司 | Battery disconnect apparatus and battery pack system |
-
2019
- 2019-10-10 CN CN201921685871.6U patent/CN210491370U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110536572A (en) * | 2019-10-10 | 2019-12-03 | 北京普莱德新能源电池科技有限公司 | A kind of electrical appliance kit |
| WO2022062526A1 (en) * | 2020-09-22 | 2022-03-31 | 中国第一汽车股份有限公司 | Battery disconnect apparatus and battery pack system |
| CN113922007A (en) * | 2021-09-17 | 2022-01-11 | 东风时代(武汉)电池系统有限公司 | Split type double-layer BDU |
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