CN218966847U - Battery integrated electrical box, battery system and electric automobile of electric automobile - Google Patents
Battery integrated electrical box, battery system and electric automobile of electric automobile Download PDFInfo
- Publication number
- CN218966847U CN218966847U CN202223318051.8U CN202223318051U CN218966847U CN 218966847 U CN218966847 U CN 218966847U CN 202223318051 U CN202223318051 U CN 202223318051U CN 218966847 U CN218966847 U CN 218966847U
- Authority
- CN
- China
- Prior art keywords
- battery
- charging
- module
- electrical box
- integrated electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009434 installation Methods 0.000 claims abstract description 25
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 22
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 241000463219 Epitheca Species 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 15
- 230000035772 mutation Effects 0.000 abstract description 4
- 239000000306 component Substances 0.000 description 21
- 230000009286 beneficial effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a battery integrated electrical box of an electric automobile, a battery system and the electric automobile, and relates to the field of batteries of electric automobiles. The battery integrated electrical box of the electric automobile comprises an installation upper shell, an installation back shell and a charging component, wherein the installation upper shell and the installation back shell are combined to form a containing cavity for containing the charging component, the charging component is integrally formed into an integrated unit, the integrated unit is installed on the installation upper shell of the battery integrated electrical box, the integration level of the battery electrical box can be improved, the charging component is integrally connected to replace the traditional wire harness connection, the accuracy and the reliability of current sampling are improved, an active pre-charging circuit is adopted to charge a battery, instant current mutation during battery starting is effectively prevented, damage to the battery is reduced, and the safety and the reliability of the battery integrated electrical box are improved; meanwhile, the active pre-charging circuit is adopted, so that the power consumption of the battery system can be reduced, the safety failure caused by pre-charging heat-resistant failure is avoided, and the safety of the battery system is improved.
Description
Technical Field
The utility model relates to the field of batteries of electric automobiles, in particular to a battery integrated electrical box of an electric automobile, a battery system and the electric automobile.
Background
In recent years, in order to respond to the green travel of the national call, electric automobiles are favored by people for traveling. The power battery of the electric automobile is used as a core component of the electric automobile, and the safety of the power battery directly influences the whole automobile performance and the running safety of the electric automobile. With the vigorous development of electric vehicles, the requirements on the integration level of the battery system of the electric vehicles are higher and higher, so that the improvement of the integration level and the safety of the batteries of the electric vehicles is an urgent requirement.
In the related art, a conventional battery system generally charges a bus capacitor using a precharge resistor to limit current, and arranges a precharge resistor and a shunt in a PDU (Power Distribution Unit ). According to the technical scheme, the battery system is low in integration level and complex in wiring, when the wiring harness is long, the wiring harness impedance and interference are easily introduced into current sampling, and the current collection precision is greatly influenced; and when the pre-charging resistor is pre-charged, the pre-charging resistor can emit more heat, so that the system power consumption of the battery system is increased, the pre-charging resistor can be caused to fail due to heat resistance when the charging time is long, and fire can be possibly caused under serious conditions.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the embodiment of the utility model provides a battery integrated electrical box of an electric automobile, a battery system and the electric automobile, which are beneficial to solving the problems of low integration level of the battery system and complex wiring among charging components. The integrated unit formed by the integrated connection of the charging components is arranged on the upper mounting shell of the battery integrated electrical box, so that the integration level of a battery system can be improved, the traditional wire harness connection is replaced by the integrated connection of the charging components, the accuracy and the reliability of current sampling can be improved, the battery is charged by adopting an active pre-charging circuit, the sudden change of the current at the moment of starting the battery is effectively prevented, the damage of the battery is reduced, and the safety and the reliability of the battery integrated electrical box are improved; meanwhile, the active pre-charging circuit is adopted, so that the power consumption of the battery system can be reduced, the safety failure caused by pre-charging heat-resistant failure is avoided, and the safety of the battery system is improved.
In a first aspect, an embodiment of the present utility model provides a battery integrated electrical box of an electric automobile, including an installation upper shell, an installation back shell and a charging component, where the installation upper shell and the installation back shell form a containing cavity for containing the charging component in a closing manner: the charging member includes: a shunt, a pre-charge inductor and a control board; the pre-charging inductor is electrically connected with the shunt and integrally arranged on the mounting upper shell; the shunt and the pre-charging inductor are connected with the control board to form an integrated unit, and the integrated unit is installed on the installation upper shell.
The technical scheme of the first aspect of the utility model has at least one of the following advantages or beneficial effects: the charging component is integrated to form an integrated unit which is arranged on the upper mounting shell of the battery integrated electrical box, so that the integration level of a battery system can be improved, the accuracy and the reliability of current sampling can be improved by integrally replacing the traditional wire harness connection, and the battery is charged by adopting the active pre-charging circuit, so that the sudden change of current at the moment of starting the battery is effectively prevented, the damage of the battery is reduced, and the safety and the reliability of the battery integrated electrical box are improved; meanwhile, the active pre-charging circuit is adopted to reduce the power consumption of the battery system, avoid the safety failure caused by pre-charging heat-resistant failure and improve the safety of the battery integrated electrical box.
Further, the integrated unit comprises a pre-charging circuit, and the pre-charging circuit is used for pre-charging the battery.
The beneficial effects of adopting the further scheme are as follows: the battery system is pre-charged by the pre-charging circuit, so that the battery is prevented from being damaged due to abrupt change of current at the moment of starting, and the safety and reliability of the battery integrated electrical box are improved.
Further, the shunt and the precharge inductor are connected in parallel.
The beneficial effects of adopting the further scheme are as follows: the shunt is connected with the pre-charging inductor in parallel to prevent the pre-charging circuit current from suddenly changing at the closing moment of the switch of the charging component, so that the battery system is short-circuited or damaged due to overlarge current, and the safety of the integrated electric box of the automobile battery is improved.
Further, the shunt is at least partially exposed and installed on the outer side of the installation upper shell, and an opening is formed in the exposed portion and used for connecting copper bars.
The beneficial effects of adopting the further scheme are as follows: the current divider is exposed out of the mounting upper shell through the current divider part, so that the current divider is connected with the copper bar to conduct current, and the copper bar plays a role in conveying current in a circuit and electrically connecting electrical equipment.
Further, the pre-charging circuit at least comprises a power supply, a pre-charging capacitor, a pre-charging inductor, a current divider, an active pre-charging resistor, a voltage comparator module, a current acquisition detection module, a logic module, a first freewheeling diode, a second freewheeling diode and a pre-charging switch; the power supply, the pre-charge capacitor, the pre-charge inductor, the first freewheeling diode, the shunt and the active pre-charge resistor are sequentially connected in series to form a loop, and the pre-charge switch is connected in series between the first freewheeling diode and the shunt; the first end of the pre-charging switch is connected with the cathode of the first freewheeling diode, and the second end of the pre-charging switch is connected with the shunt; the voltage comparator module is connected with the active pre-charge resistor in parallel, the current acquisition detection module is connected with the current divider in parallel, the input end of the logic module is connected with the output end of the voltage comparator module, the output end of the logic module is connected with the control end of the pre-charge switch to control the opening and closing of the pre-charge switch, the positive electrode of the second freewheeling diode is connected with the junction of the pre-charge inductor and the positive electrode of the first freewheeling diode, and the negative electrode of the second freewheeling diode is connected with the power supply.
The beneficial effects of adopting the further scheme are as follows: the pre-charging inductor in the pre-charging circuit charges the pre-charging capacitor, the current detection module detects the current of the pre-charging capacitor, the input end of the logic module is connected with the output end of the voltage comparator, the output end of the logic module is connected with the control end of the pre-charging switch to control the opening and closing of the pre-charging switch, the logic module controls the pre-charging switch to adjust the voltage according to the output result of the voltage comparator, and the pre-charging inductor in the pre-charging circuit charges the pre-charging capacitor. Through the initiative pre-charging mode, the safety failure caused by resistance thermal failure is avoided, the safety of the battery integrated electrical box is improved, and meanwhile, the power consumption of the battery integrated electrical box is reduced.
Further, the control board is provided with a plurality of electrical appliance modules, and each electrical appliance module at least comprises an insulation detection module, a high-voltage sampling module, a high-voltage control module, a current sampling module, a communication module, a power supply module, a driving module, an external temperature detection module and a bus sampling module.
The beneficial effects of adopting the further scheme are as follows: through set up a plurality of electrical modules on the control panel, can improve the integrated level of battery integrated electrical apparatus box, improve the functional diversity of battery integrated electrical apparatus box, also improve the operational fail safe nature of battery integrated electrical apparatus box simultaneously.
Further, the control board is provided with a hole site matched with the shunt and the precharge inductor.
The beneficial effects of adopting the further scheme are as follows: through set up with shunt and precharge and feel complex hole site on the control panel for shunt, control panel and precharge feel electric connection.
Further, the control board further comprises a connector, the connector is electrically connected with the communication module and the power supply module, and the connector is used for connecting an external electrical connection point.
The beneficial effects of adopting the further scheme are as follows: the connector is used for connecting an external electric connection point and is a connection bridge in a working circuit, and plays roles of electric connection and signal transmission. The connector is electrically connected with the communication module and the power supply module, so that the safety and reliability of the battery integrated electrical box can be improved.
In a second aspect, the utility model further provides an electric automobile battery system, which comprises the battery integrated electrical box of the electric automobile.
The technical scheme of the second aspect of the utility model has at least one of the following advantages or beneficial effects: the battery integrated electrical box of the electric automobile, which is disclosed by the technical scheme of the first aspect, is characterized in that the charging component is integrated to form an integrated unit which is arranged on the upper mounting shell of the battery integrated electrical box, so that the integration level of a battery system can be improved, the whole automobile arrangement of the battery system is facilitated, and the process links are reduced; the integrated connection of the charging component replaces the traditional wire harness connection, the precision and the reliability of current sampling can be improved, the battery is charged by adopting an active pre-charging circuit, the sudden change of the current at the moment of starting the battery is effectively prevented, the damage of the battery is reduced, and the safety and the reliability of the battery integrated electrical box are improved. Meanwhile, the active pre-charging circuit is adopted, so that the power consumption of the battery system can be reduced, the safety failure caused by the thermal failure of pre-charging is avoided, and the safety of the battery system is improved.
In a third aspect, the utility model further provides an electric automobile, which comprises the battery system of the electric automobile in the second aspect.
The technical scheme of the third aspect of the utility model has at least one of the following advantages or beneficial effects: the advantages or beneficial effects of the electric vehicle battery system according to the second aspect may refer to the discussion of the second aspect, and are not repeated here.
Drawings
Fig. 1 is a schematic structural view of a battery integrated electrical box of an electric automobile according to the present utility model;
FIG. 2 is a schematic view of the flow splitter of FIG. 1;
fig. 3 is a schematic exploded view of a battery integrated electrical box of an electric vehicle according to the present utility model;
fig. 4 is a top view of the control panel of fig. 3;
fig. 5 is a bottom view of the control panel of fig. 3;
fig. 6 is a circuit connection diagram of a charging component in a battery integrated electrical box of an electric automobile according to the present utility model;
fig. 7 is a connection diagram of a pre-charging circuit in a battery integrated electrical box of an electric automobile.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
In the related art, a conventional battery system generally charges a bus capacitor using a precharge resistor to limit current, and arranges a precharge resistor and a shunt in a PDU (Power Distribution Unit ). According to the technical scheme, the battery system is low in integration level and complex in wiring, when the wiring harness is long, the wiring harness impedance and interference are easily introduced into current sampling, and the current collection precision is greatly influenced; and when the pre-charging resistor is pre-charged, the pre-charging resistor can emit more heat, so that the system power consumption of the battery system is increased, the pre-charging resistor can be caused to fail due to heat resistance when the charging time is long, and fire can be possibly caused under serious conditions.
Therefore, the embodiment of the utility model provides a battery integrated electrical box of an electric automobile, a battery system and the electric automobile, which are beneficial to solving the problems of low integration level of the battery system and complex wiring among charging components. The integrated unit that forms of charging part integration installs in the installation epitheca of battery integrated electrical apparatus box, can improve the integrated level of battery integrated electrical apparatus box, and charging part integration replaces traditional pencil to connect, can improve the precision and the reliability of electric current sampling, adopts initiative precharge circuit to charge to the battery, thereby effectively prevents that the battery from starting current mutation in the twinkling of an eye and reduce the damage of battery, has improved the fail safe nature of battery integrated electrical apparatus box. Meanwhile, the active pre-charging circuit is adopted, so that the power consumption of the battery system can be reduced, meanwhile, the safety fault caused by the thermal failure of pre-charging is avoided, and the safety of the battery system is improved.
Embodiments of the present utility model will be further described below with reference to the accompanying drawings.
Referring to fig. 1 to 6, the battery integrated electrical box 1000 of an electric vehicle according to the present utility model includes a mounting upper case 100, a mounting back case 200, and a charging member, and the mounting upper case 100 and the mounting back case 200 are covered to form a receiving chamber (not shown) for receiving the charging member. The charging means includes a shunt 110, a precharge sense 310, and a control board 300; the pre-charge inductor 310 is electrically connected to the shunt 110 and integrally mounted to the mounting upper case 100; the shunt 110 and the precharge inductor 310 are connected with the control board 300 to form an integrated unit, which is mounted to the mounting upper case 100.
The integrated unit of the integrated formation of charging unit installs in the installation upper casing 100 of battery integrated electrical apparatus box 1000, can improve the integrated level of battery integrated electrical apparatus box 1000, can reduce the wiring setting of battery electrical apparatus box through the integrated connection of charging unit, improve precision and reliability of the electric current sampling, adopt the initiative precharge circuit to charge the battery, thus prevent the battery from starting the instant electric current mutation and reduce the damage of the battery effectively, has improved the safe reliability of the battery integrated electrical apparatus box; meanwhile, the active pre-charging circuit is adopted to reduce the power consumption of the battery integrated electrical box 1000, so that the safety failure caused by pre-charging heat-resistant failure is avoided, and the safety of the battery integrated electrical box 1000 is improved.
It should be noted that, the connection of the shunt 110 and the precharge sense 310 to the control board 300 to form an integrated unit includes that the shunt 110 and the precharge sense 310 are welded to the control board 300 through a spot welding process to form an integrated unit, the shunt 110 and the precharge sense 310 are connected to the control board 300 through a conventional wire harness to form an integrated unit, and the shunt 110 and the precharge sense 310 are screwed to the control board 300 to form one or more integrated units.
Referring to fig. 1 and 6, in one embodiment, a battery integrated electrical box 1000 of an electric vehicle includes a mounting upper case 100, a mounting back case 200, a control board 300, a shunt 110, a precharge sense 310, a first wire 321, a second wire 322, a third wire 323, and a fourth wire 324; the control board 300 is further provided with holes for matching the shunt 110 and the precharge inductor 310, including a first hole 371, a second hole 372, a third hole 373, and a fourth hole 374. The first conductive wire 321, the second conductive wire 322, the third conductive wire 323 and the fourth conductive wire 324 are electrically connected with the control board 300 by being matched with the first hole site 371, the second hole site 372, the third hole site 373 and the fourth hole site 374. Optionally, the shunt 110 is in a strip shape, the shunt 110 is provided with a first opening 111, a second opening 112, a third opening 113 and a fourth opening 114, the shunt 110 is at least partially exposed and installed on the outer side of the installation upper shell 100, the exposed portion includes the first opening 111 and the fourth opening 114, the first opening 111 and the fourth opening 114 are used for connecting copper bars (not shown in the figure), the shunt 110 is partially exposed and installed on the outer side of the installation upper shell 100, so that the shunt 110 and the copper bars can be connected to conduct current, and the copper bars play roles in current conveying and electrical equipment conducting connection in a circuit. The first conductive wire 321 and the second conductive wire 322 are electrically connected with the second opening 112 in the shunt 110, so that the shunt 110 is electrically connected with the control board 300, the shunt 110 is connected with the pre-charge inductor 310 in parallel, and the shunt 110, the pre-charge inductor 310 and the control board 300 are electrically connected to form an integrated unit through a spot welding process and integrally connected with the upper case 100. Both the mounting upper case 100 and the mounting back case 200 are made of an insulating material to provide protection for the high voltage integrated unit.
The integrated unit is integrally formed and arranged on the upper mounting shell 100 of the battery integrated electrical box 1000 through the spot welding process, so that the integration level of the battery integrated electrical box 1000 can be improved, the whole vehicle arrangement of a battery system is facilitated, the process links are reduced, the position size of a containing cavity is reduced, and the whole box size of the battery integrated electrical box 1000 is reduced; the traditional wire harness connection is replaced by the spot welding process, so that the accuracy and reliability of current sampling can be improved, meanwhile, the safety faults caused by complex wiring are avoided, and the safety of a battery system is improved.
Referring to fig. 4, fig. 4 is a top view of a control board 300, and the front surface of the control board 300 includes a plurality of electrical modules including at least a high voltage sampling module 330 and an insulation detection module 340. The high-voltage sampling module consists of a plurality of resistors, capacitors, a power supply module and a working circuit. The voltage dividing resistor is responsible for dividing the high voltage into lower voltage so as to provide the lower voltage for the working circuit for sampling; the voltage dividing circuit formed by the capacitor divides lower voltage from the high-voltage loop, and then provides a required direct current working power supply for the working circuit module through the power supply module. The high-voltage sampling module is used for providing working voltage for the battery integrated electrical box of the electric automobile, so that accurate voltage sampling is realized. The insulation detection module 340 sends out a grounding alarm signal when the insulation resistance to the ground of the battery integrated electrical box reaches an alarm setting value, and performs grounding support detection to locate a grounding fault in a power supply loop so as to improve the processing speed of the grounding fault, lighten the labor and shorten the grounding period, so that the battery integrated electrical box 1000 can run more safely.
Referring to fig. 5, fig. 5 is a bottom view of the control board 300, and the opposite side of the control board 300 includes a number of electrical modules including at least a communication module 350, a current detection module 360, a module 380 with control, pyrofuse driving, external temperature detection and bus bar harvesting functions, and a power supply module 390. The control board also comprises a connector 355, the connector 355 is electrically connected with the communication module 380 and the power supply module 390, the connector 355 is used for connecting an external electrical connection point, and the connector 355 is a connection bridge in a working circuit and plays roles of electrical connection and signal transmission. The communication module 350 can remotely transmit the running condition of the integrated unit to the control center of the electric vehicle in real time, detect the normal running of the integrated unit in real time, and timely transmit information to the control center of the electric vehicle when the running abnormality of the integrated unit is found, and adopt relevant safety measures to improve the running safety and stability of the battery integrated electric box of the electric vehicle. The current detection module 360 collects and monitors the current of the integrated unit, detects the working state of the charging component, directly reads real-time data of the current, the voltage and other states of the integrated unit, checks the abnormal historical condition of the integrated unit in real time, and can also give an alarm to faults in real time, so that the battery integrated electrical box 1000 is safer and more stable to operate. The module 380 has control, pyrofuse driving, external temperature detection and bus acquisition functions, can detect the temperature of the integrated unit in real time, and can adjust the current limiting resistor or the reference voltage to control the integrated unit when the current is overlarge or the temperature is overhigh, thereby improving the safety and reliability of the operation of the battery integrated electrical box 1000. When the battery integrated electrical box 1000 collides, short-circuits or other safety faults occur, the Pyrofuse drive can cut off the power supply in a short time, can rapidly disconnect the copper bar, plays a role of a fuse or a relay, and reduces the probability of danger when the automobile runs. The bus collection mainly realizes the electric connection between the battery cells so as to form a required serial-parallel connection relationship, and on the other hand, the bus can be directly connected with the battery cells and can be used as a sampling point of the voltage and the temperature of the battery cells, so that the collection, the distribution and the transmission of electric energy can be realized. Because a large amount of electric energy passes through the bus in the operation process, the integrated unit can bear great heating and electric effect during short circuit, and the operation stability of the integrated unit is further improved.
Referring to fig. 6, fig. 6 is a circuit connection diagram of a charging component in a battery integrated circuit box 1000 of an electric vehicle according to the present utility model. The charging component comprises a current divider 110, a pre-charging sense 310 and a control board 300, the current change through the current divider 110 is larger at the starting moment of the electric automobile, the pre-charging sense 310 and the current divider 110 are connected in parallel, the pre-charging circuit current mutation at the switching-on moment of the charging component is prevented, the battery integrated electric box 1000 is short-circuited or the battery system is damaged due to overlarge current, and the safety of the battery system of the automobile is improved.
Referring to fig. 7, fig. 7 is a connection diagram of a pre-charging circuit in a battery integrated electrical box of an electric automobile. The pre-charging circuit at least comprises a power supply, a pre-charging capacitor, a pre-charging inductor, a current divider, an active pre-charging resistor, a voltage comparator module, a current acquisition and detection module, a logic module, a first freewheeling diode, a second freewheeling diode and a pre-charging switch; the power supply, the pre-charge capacitor, the pre-charge inductor, the first freewheeling diode, the shunt and the active pre-charge resistor are sequentially connected in series to form a loop, and the pre-charge switch is connected between the first freewheeling diode and the shunt in series; the first end of the pre-charging switch is connected with the cathode of the first freewheeling diode, and the second end of the pre-charging switch is connected with the shunt; the voltage comparator module is connected with the active pre-charge resistor in parallel, the current acquisition detection module is connected with the current divider in parallel, the input end of the logic module is connected with the output end of the voltage comparator module, the output end of the logic module is connected with the control end of the pre-charge switch to control the opening and closing of the pre-charge switch, the positive electrode of the second free-wheeling diode is connected with the connection part of the pre-charge inductor and the positive electrode of the first free-wheeling diode, and the negative electrode of the second free-wheeling diode is connected with the power supply.
The charging mode adopted by the pre-charging circuit is active pre-charging, when the battery system needs to work, a pre-charging switch in the pre-charging circuit is closed, a current detection module is arranged in the pre-charging circuit, the voltage is output to a voltage comparator module through detecting the current in the pre-charging circuit, the output voltage is compared with a reference voltage, a corresponding signal is output to a logic module by the voltage comparator, and the logic module outputs the corresponding signal to control the on and off of the pre-charging switch in the pre-charging circuit, so that the voltage is adjusted. The precharge inductor in the precharge circuit charges the precharge capacitor, and the precharge inductor in the precharge circuit charges the precharge capacitor. The first freewheeling diode and the second freewheeling diode are used for preventing voltage or current in the pre-charging circuit from suddenly changing, and when the voltage or the current in the pre-charging circuit suddenly changes, the first freewheeling diode and the second freewheeling diode provide a power consumption path for reverse electromotive force, so that the safety and the reliability of the pre-charging circuit are improved, the safety failure caused by resistance thermal failure is avoided through the pre-charging circuit, the safety of the battery integrated electrical box 1000 is improved, and the power consumption of the battery integrated electrical box 1000 is reduced.
The embodiment of the utility model also provides an electric automobile battery system, which comprises the battery integrated electrical box 1000 of the electric automobile, wherein the battery integrated electrical box 1000 of the electric automobile comprises an installation upper shell 100, an installation back shell 200 and a charging component, and the installation upper shell 100 and the installation back shell 200 are covered to form a containing cavity (not shown in the figure) for containing the charging component. The charging means includes a shunt 110, a precharge sense 310, and a control board 300; the pre-charge inductor 310 is electrically connected to the shunt 110 and integrally mounted to the mounting upper case 100; the shunt 110 and the precharge inductor 310 are connected with the control board 300 to form an integrated unit, which is mounted to the mounting upper case 100.
By adopting the battery integrated electrical box 1000 of the electric automobile, the charging component is integrated to form the integrated unit which is arranged on the upper mounting shell 100 of the battery integrated electrical box 1000, so that the integration level of a battery system can be improved, the whole automobile arrangement of the battery system is facilitated, and the process links are reduced; the integrated circuit is connected through the integrated connection of the charging component instead of the traditional wire harness connection, the precision and the reliability of current sampling can be improved, an active pre-charging circuit is adopted to charge the integrated unit, the power consumption of a battery system is reduced, meanwhile, the safety failure caused by pre-charging heat-resistant failure is avoided, and the safety of the battery system is improved.
The embodiment of the utility model also provides an electric automobile, which comprises the battery integrated electrical box 1000 and the battery system of the electric automobile, wherein the battery integrated electrical box 1000 of the electric automobile is integrated with a charging component to form an integrated unit, and the integrated unit is arranged on the upper mounting shell 100 of the battery integrated electrical box 1000, so that the integration level of the battery system can be improved, the whole automobile arrangement of the battery system is facilitated, and the process links are reduced; the integrated circuit is connected through the integrated connection of the charging component instead of the traditional wire harness connection, the precision and the reliability of current sampling can be improved, an active pre-charging circuit is adopted to charge the integrated unit, the power consumption of a battery system is reduced, meanwhile, the safety failure caused by pre-charging heat-resistant failure is avoided, and the safety of the battery system is improved. Meanwhile, the battery integrated electrical box 1000 is internally provided with at least a high-voltage sampling module 330, an insulation detection module 340, a communication module 350, a current detection module 360, a module 380 and a power supply module 390, wherein the module 380 and the power supply module have the functions of control, pyrofuse driving, external temperature detection and bus acquisition, and the integrated level of the battery integrated electrical box 1000 can be improved by arranging a plurality of electrical modules on the control board 300, so that the whole vehicle arrangement is reduced, the functional diversity of the battery integrated electrical box 1000 is improved, the running safety and reliability of the battery integrated electrical box 1000 are improved, and meanwhile, when the battery integrated electrical box 1000 runs abnormally, the communication module 350 can send alarm information to the control center of an automobile, so that the electric automobile is safe and reliable in the running process.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
1. The utility model provides an integrated electrical apparatus box of battery of electric automobile, its characterized in that, including installation epitheca, installation back of the body shell and charging member, the installation epitheca with the installation back of the body cap closes and forms the holding chamber that is used for the holding charging member: the charging member includes: a shunt, a pre-charge inductor and a control board; the pre-charging inductor is electrically connected with the shunt and integrally arranged on the mounting upper shell; the shunt and the pre-charging inductor are connected with the control board to form an integrated unit, and the integrated unit is installed on the installation upper shell.
2. The battery integrated electrical box of an electric vehicle according to claim 1, wherein the integrated unit comprises a pre-charging circuit for pre-charging the battery.
3. The battery integrated electrical box of an electric automobile according to claim 1, wherein the shunt and the precharge inductor are connected in parallel.
4. The battery integrated electrical box of an electric automobile according to claim 1, wherein the current divider is at least partially exposed and mounted on the outer side of the mounting upper case, and an opening is provided on the exposed portion, and the opening is used for connecting with a copper bar.
5. The battery integrated electrical box of the electric automobile according to claim 2, wherein the pre-charging circuit at least comprises a power supply, a pre-charging capacitor, a pre-charging inductor, a shunt, an active pre-charging resistor, a voltage comparator module, a current acquisition detection module, a logic module, a first freewheeling diode, a second freewheeling diode and a pre-charging switch; the power supply, the pre-charge capacitor, the pre-charge inductor, the first freewheeling diode, the shunt and the active pre-charge resistor are sequentially connected in series to form a loop, and the pre-charge switch is connected in series between the first freewheeling diode and the shunt; the first end of the pre-charging switch is connected with the cathode of the first freewheeling diode, and the second end of the pre-charging switch is connected with the shunt; the voltage comparator module is connected with the active pre-charge resistor in parallel, the current acquisition detection module is connected with the current divider in parallel, the input end of the logic module is connected with the output end of the voltage comparator module, the output end of the logic module is connected with the control end of the pre-charge switch to control the opening and closing of the pre-charge switch, the positive electrode of the second freewheeling diode is connected to the junction of the pre-charge inductor and the positive electrode of the first freewheeling diode, and the negative electrode of the second freewheeling diode is connected to the power supply.
6. The battery integrated electrical box of the electric automobile according to claim 2, wherein the control board comprises a plurality of electrical modules, and the electrical modules at least comprise an insulation detection module, a high-voltage sampling module, a high-voltage control module, a current sampling module, a communication module, a power supply module, a driving module, an external temperature detection module and a bus sampling module.
7. The battery integrated electrical box of an electric automobile according to claim 2, wherein the control board is provided with holes matched with the current divider and the precharge inductor.
8. The battery integrated electrical box of an electric vehicle according to claim 6, wherein the control board further comprises a connector, the connector is electrically connected with the communication module and the power supply module, and the connector is used for connecting an external electrical connection point.
9. An electric vehicle battery system, characterized by comprising the battery integrated electrical box of an electric vehicle according to any one of claims 1-8.
10. An electric vehicle comprising the electric vehicle battery system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223318051.8U CN218966847U (en) | 2022-12-09 | 2022-12-09 | Battery integrated electrical box, battery system and electric automobile of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223318051.8U CN218966847U (en) | 2022-12-09 | 2022-12-09 | Battery integrated electrical box, battery system and electric automobile of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218966847U true CN218966847U (en) | 2023-05-05 |
Family
ID=86166186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223318051.8U Active CN218966847U (en) | 2022-12-09 | 2022-12-09 | Battery integrated electrical box, battery system and electric automobile of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218966847U (en) |
-
2022
- 2022-12-09 CN CN202223318051.8U patent/CN218966847U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110350262B (en) | Battery pack and charging combination | |
| CN109591727B (en) | Electric automobile block terminal | |
| CN108199099B (en) | Battery protection device and control method thereof | |
| CN115622204B (en) | Vehicle-mounted charger and method for lithium battery automobile | |
| CN216231692U (en) | High-voltage distribution box for electric automobile | |
| CN205553940U (en) | High voltage power distribution box based on on -vehicle CAN bus network | |
| CN218966847U (en) | Battery integrated electrical box, battery system and electric automobile of electric automobile | |
| CN115500025A (en) | Vehicle controller and vehicle with same | |
| CN105871037B (en) | Battery management system and method | |
| CN111775706A (en) | Power battery low-voltage manual maintenance switch control system and vehicle | |
| KR20170127150A (en) | Power Relay Assembly for Electric Vehicle | |
| CN116526620A (en) | Energy storage system and active equalization system thereof | |
| CN115133627A (en) | Charge-discharge circuit structure, integrated power distribution unit, power battery pack and vehicle | |
| CN213354229U (en) | Battery control circuit, battery management system and electric automobile | |
| CN213056715U (en) | Integrated power distribution controller for vehicle | |
| CN112937307A (en) | Battery package unit of opening circuit and electric automobile thereof | |
| CN110739612B (en) | High-voltage power distribution cabinet of pure electric double-source system | |
| CN207977694U (en) | A kind of high voltage distribution box | |
| CN208602327U (en) | A kind of new-energy automobile high voltage distribution box | |
| CN209169322U (en) | Cover plate assembly for battery core and the battery core with it | |
| CN112217275A (en) | Vehicle-mounted double-battery system | |
| CN217396258U (en) | Battery monitoring and management system of electric automobile | |
| CN220639529U (en) | Battery distribution box, battery system and vehicle | |
| CN221090507U (en) | High-voltage box of electric automobile | |
| CN111224050A (en) | Power battery pack and whole vehicle control system based on same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
|
| CP03 | Change of name, title or address |