CN218228669U - Battery pack charging device and vehicle with same - Google Patents

Battery pack charging device and vehicle with same Download PDF

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Publication number
CN218228669U
CN218228669U CN202222399499.0U CN202222399499U CN218228669U CN 218228669 U CN218228669 U CN 218228669U CN 202222399499 U CN202222399499 U CN 202222399499U CN 218228669 U CN218228669 U CN 218228669U
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China
Prior art keywords
battery pack
negative electrode
charging interface
bridge arm
capacitor
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CN202222399499.0U
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Chinese (zh)
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喻凤传
张星春
李江浩
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BYD Co Ltd
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BYD Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a battery pack charging device and a vehicle with the same, which comprises a first direct current charging interface, wherein the anode of the first direct current charging interface is connected with the anode of a battery pack, and the cathode of the first direct current charging interface is connected with the cathode of the battery pack; the negative electrode of the second direct-current charging interface is connected with the negative electrode of the battery pack; the control unit comprises a control module and a driving module, the control module sends a signal for controlling the driving module to execute, the driving module comprises at least one phase of bridge arm, the bridge arm comprises an upper bridge arm and a lower bridge arm, the upper bridge arm is connected with the anode of the battery pack, and the lower bridge arm is connected with the cathode of the battery pack; and one end of the inductor is connected with the anode of the second direct current charging interface, and the other end of the inductor is connected with the midpoint of the bridge arm. The utility model discloses battery package charging device can step up to charge to the battery package, has two direct currents interface that charges moreover, can promote charging power.

Description

Battery pack charging device and vehicle with same
Technical Field
The utility model belongs to the technical field of the vehicle technique and specifically relates to a battery package charging device and vehicle that has it are related to.
Background
The battery package charging device in the correlation technique is equipped with the direct current interface that charges usually, and can charge for the battery through the direct current interface that charges, but, because battery package charging device's structure sets up unreasonablely to and receive battery package charging device's charging power restriction, lead to whole car quick charge ability relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a battery package charging device, this battery package charging device not only can step up the charging to the battery package, has two direct current interfaces that charge moreover, can promote charging power, shortens the charge time.
The utility model discloses still provide a vehicle that has above-mentioned battery package charging device.
In order to achieve the above object, according to a first aspect of the present invention, a battery pack charging device is provided, including: the positive electrode of the first direct-current charging interface is connected with the positive electrode of the battery pack, and the negative electrode of the first direct-current charging interface is connected with the negative electrode of the battery pack; the negative electrode of the second direct-current charging interface is connected with the negative electrode of the battery pack; the control unit comprises a control module and a driving module, the control module is used for sending a signal for controlling the driving module to execute, the driving module comprises at least one phase of bridge arm, the bridge arm comprises an upper bridge arm and a lower bridge arm, the upper bridge arm is connected with the anode of the battery pack, and the lower bridge arm is connected with the cathode of the battery pack; and one end of the inductor is connected to the anode of the second direct current charging interface, and the other end of the inductor is connected to the midpoint of the bridge arm.
According to the utility model discloses battery package charging device not only can step up the battery to the battery package and charge, has two direct current interfaces that charge moreover, can promote charging power, shortens charge time.
According to some embodiments of the invention, the inductance is at least one phase winding of the electric machine.
According to some embodiments of the invention, the inductor is a three-phase winding of the electrical machine; the control unit comprises a motor controller, the motor controller comprises the driving module, the driving module comprises three-phase bridge arms, the three-phase bridge arms respectively comprise the upper bridge arm and the lower bridge arm, the upper bridge arms are connected with the positive pole of the battery pack after being connected in a tandem manner, and the lower bridge arms are connected with the negative pole of the battery pack after being connected in a tandem manner; and one end of the three-phase winding is respectively connected to the middle points of the three-phase bridge arms, and the other end of the three-phase winding is connected to the anode of the second direct-current charging interface through an N line after being connected in a junction mode.
According to some embodiments of the present invention, the battery pack charging device further comprises: the two ends of the first positive electrode contactor are respectively connected to the positive electrode of the battery pack and the positive electrode of the first direct current charging interface; one end of the resistor is connected to the positive electrode of the first direct current charging interface; and the two ends of the second anode contactor are respectively connected with the anode of the battery pack and the other end of the resistor.
According to some embodiments of the present invention, the battery pack charging device further comprises: the two ends of the first negative contactor are respectively connected with the negative electrode of the battery pack and the negative electrode of the first direct current charging interface; the first negative electrode contactor is connected with the negative electrode of the battery pack through a first conductive structure, and the first Hall is sleeved on the first conductive structure.
According to some embodiments of the present invention, the battery pack charging device further comprises: and the boost capacitor, one end of the boost capacitor is connected with the anode of the second direct current charging interface and one end of the inductor, and the other end of the boost capacitor is connected with the cathode of the battery pack.
According to some embodiments of the present invention, the battery pack charging device further comprises: two ends of the third positive contactor are respectively connected to the positive electrode of the second direct-current charging interface and one end of the boost capacitor; and the two ends of the second negative electrode contactor are respectively connected with the negative electrode of the battery pack and the negative electrode of the second direct-current charging interface.
According to the utility model discloses a some embodiments, battery package charging device still includes: one end of the fourth positive contactor is connected to the one end of the boost capacitor and the third positive contactor, and the other end of the fourth positive contactor is connected to the one end of the inductor; and the fourth positive contactor is connected with the third positive contactor through a second conductive structure, and the second Hall is sleeved on the second conductive structure.
According to some embodiments of the present invention, the battery pack charging device further comprises: and two ends of the X capacitor are respectively connected to the anode and the cathode of the battery pack.
According to the utility model discloses a some embodiments, battery package charging device still includes: and one end of the first negative electrode fuse is connected with the negative electrode of the battery pack, and the other end of the first negative electrode fuse is connected with the lower bridge arm.
According to the utility model discloses a some embodiments, battery package charging device still includes: the positive electrode of the PTC is connected with the positive electrode of the battery pack, and the negative electrode of the PTC is connected with the negative electrode of the battery pack through a second negative electrode fuse; and the positive electrode of the air-conditioning compressor is connected with the positive electrode of the battery pack, and the negative electrode of the air-conditioning compressor is connected with the negative electrode of the battery pack through a third negative electrode fuse.
According to some embodiments of the present invention, the battery pack charging device further comprises: an alternating current charging interface; the input end of the vehicle-mounted charger is connected with the alternating current charging interface; the input end of the DC/DC module is connected with the output end of the vehicle-mounted charger, and the output end of the DC/DC module is connected with the battery pack; and the output end of the DC/DC module is connected with the battery pack through the fourth negative electrode fuse.
According to some embodiments of the present invention, the battery pack charging device further comprises: the battery pack is connected with the bridge arm through a third conductive structure, and the first magnetic ring surrounds the third conductive structure; and the second direct-current charging interface is connected with the battery pack and the inductor through a fourth conductive structure, and the second magnetic ring surrounds the fourth conductive structure.
According to some embodiments of the present invention, the battery pack charging device further comprises: one end of the first Y capacitor is connected with the anode of the battery pack, and the other end of the first Y capacitor is grounded; one end of the second Y capacitor is connected with the negative electrode of the battery pack, and the other end of the second Y capacitor is grounded; one end of the third Y capacitor is connected with the anode of the second direct-current charging interface, and the other end of the third Y capacitor is grounded; and one end of the fourth Y capacitor is connected with the negative electrode of the second direct-current charging interface, and the other end of the fourth Y capacitor is grounded.
According to the utility model discloses a second aspect embodiment provides a vehicle, include according to the utility model discloses a first aspect embodiment provide battery package charging device.
According to the utility model discloses a vehicle of second aspect embodiment is through utilizing according to the utility model discloses a first aspect embodiment battery package charging device, not only can step up to charge to the battery package, have two direct current interfaces that charge moreover, can promote charging power, shorten charge time.
Additional aspects and advantages 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
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a battery pack charging apparatus according to an embodiment of the present invention.
Reference numerals are as follows:
a battery pack charging device 1, a battery pack 2,
A first DC charging interface 100, a second DC charging interface 200,
Control unit 300, control module 310, drive module 320, arm 321, upper arm 322, lower arm 323, motor 330, and,
An inductor 400,
A first positive electrode contactor 500, a resistor 510, a second positive electrode contactor 520, a third positive electrode contactor 530, a fourth positive electrode contactor 540, a second Hall circuit 550,
A first negative electrode contactor 600, a first Hall 610, a second negative electrode contactor 620, a first negative electrode fuse 630,
A boost capacitor 700, an X capacitor 710, a first Y capacitor 720, a second Y capacitor 730, a third Y capacitor 740, a fourth Y capacitor 750,
PTC800, second negative electrode fuse 810, air conditioner compressor 820, third negative electrode fuse 830,
The charging device comprises an alternating current charging interface 900, a vehicle-mounted charger 910, a DC/DC module 920, a fourth negative electrode fuse 930, a first magnetic ring 940 and a second magnetic ring 950.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, the connections described herein include both direct and indirect connections.
In the description of the present invention, "a plurality" means two or more.
A battery pack charging apparatus 1 according to an embodiment of the present invention is described below with reference to the drawings.
As shown in fig. 1, the battery pack charging apparatus 1 according to the embodiment of the present invention includes a first dc charging interface 100, a second dc charging interface 200, a control unit 300, and an inductor 400.
The positive electrode of the first direct-current charging interface 100 is connected to the positive electrode of the battery pack 2, the negative electrode of the first direct-current charging interface 100 is connected to the negative electrode of the battery pack 2, the negative electrode of the second direct-current charging interface 200 is connected to the negative electrode of the battery pack 2, the control unit 300 comprises a control module 310 and a driving module 320, the control module 310 is used for sending a signal for controlling the driving module 320 to execute, the driving module 320 comprises at least one phase bridge arm 321, each phase bridge arm 321 comprises an upper bridge arm 322 and a lower bridge arm 323, the upper bridge arm 322 is connected to the positive electrode of the battery pack 2, the lower bridge arm 323 is connected to the negative electrode of the battery pack 2, one end of the inductor 400 is connected to the positive electrode of the second direct-current charging interface 200, and the other end of the inductor 400 is connected to the midpoint of the bridge arm 321.
Note that the connection of the other end of inductor 400 to the midpoint of arm 321 means that the other end of inductor 400 is connected to a position between upper arm 322 and lower arm 323 of arm 321, and does not mean that the other end of inductor 400 is connected to the middle position of arm 321.
For example, the battery pack charging device 1 may simultaneously charge the battery pack 2 through the first dc charging interface 100 and the second dc charging interface 200, or the battery pack charging device 1 may charge the battery pack 2 through only the first dc charging interface 100, or the battery pack charging device 1 may charge the battery pack 2 through only the second dc charging interface 200.
According to the utility model discloses battery package charging device 1, through the anodal of connecting first direct current interface 100 that charges in battery package 2 positive pole, first direct current interface 100's that charges negative pole is connected in battery package 2's negative pole, and first direct current interface 100 charges can charge for battery package 2 when being connected with the cabinet that charges.
In addition, the negative electrode of the second dc charging interface 200 is connected to the negative electrode of the battery pack 2, the arm 321 includes an upper arm 322 and a lower arm 323, the upper arm 322 is connected to the positive electrode of the battery pack 2, the lower arm 323 is connected to the negative electrode of the battery pack 2, one end of the inductor 400 is connected to the positive electrode of the second dc charging interface 200, and the other end of the inductor 400 is connected to the midpoint of the arm 321. That is, the positive electrode of second dc charging interface 200 is connected to the positive electrode of battery pack 2 through inductor 400 and upper arm 322. By controlling the alternate on-off of upper bridge arm 322 and lower bridge arm 323, the charging voltage of second dc charging interface 200 can be boosted, so as to boost and charge battery pack 2.
For example, when a charging cabinet with a charging voltage less than 750V (e.g., 470V) is used for charging, the charging cabinet may be connected to the second dc charging interface 200 to boost the charging voltage to 610V, and then charge the battery pack 2, so as to ensure that the battery pack 2 can be fully charged as much as possible and the charging speed is faster.
When the charging cabinet with the charging voltage not less than 750V is used for charging, the charging cabinet can be connected with any one of the first direct-current charging interface 100 and the second direct-current charging interface 200, the charging selection is more diversified, and the charging cabinet and the first direct-current charging interface 100 have the advantages of smaller loss of charging current and short charging time.
In addition, as can be seen from the above, the battery pack charging device 1 has two direct current charging interfaces, and the battery pack charging device 1 can cooperate with the whole vehicle to charge the battery pack 2 in cooperation with the first direct current charging interface 100 and the second direct current charging interface 200, so that the charging power is improved, the quick charging capability of the whole vehicle can be improved, the charging speed of the battery pack 2 is higher, and the charging time is shorter.
Therefore, according to the utility model discloses battery package charging device 1 not only can step up the charge to battery package 2, has two direct current interfaces that charge moreover, can promote charging power, shortens the charge time.
In some embodiments of the present invention, as shown in fig. 1, the inductor 400 is at least one phase winding of the motor 330, so that the winding of the motor 330 is reused in the charging circuit of the battery pack 2, and no additional inductive element is needed, which can improve the utilization rate of the winding of the motor 330, further reduce the number of parts of the battery pack charging apparatus 1, and make the volume of the battery pack charging apparatus 1 smaller.
In some embodiments of the present invention, the inductor 400 is a three-phase winding of the motor 330, the control unit 300 includes a motor controller, the motor controller includes a driving module 320, the driving module 320 includes a three-phase bridge arm 321, the three-phase bridge arm 321 includes an upper bridge arm 322 and a lower bridge arm 323, the three-phase upper bridge arm 322 is connected to the positive electrode of the battery pack 2 after being connected to the junction, the three-phase lower bridge arm 323 is connected to the negative electrode of the battery pack 2 after being connected to the junction, one end of the three-phase winding is connected to the midpoint of the three-phase bridge arm 321, and the other end of the three-phase winding is connected to the positive electrode of the second dc charging interface 200 through an N line after being connected to the junction.
The fact that one end of each of the three-phase windings is connected to the midpoint of each of the three-phase arms 321 means that one end of each of the three-phase windings is connected to a position between the upper arm 322 and the lower arm 323 of each of the three-phase arms 321, and not that one end of each of the three-phase windings is connected to the middle position of each of the three-phase arms 321.
That is, the motor 330 is a three-phase motor, the motor 330 may be a driving motor or a generator, and the three-phase winding is applied to the battery pack charging apparatus 1 and is connected to the three-phase bridge arm 321 of the control unit 300 in a one-to-one correspondence manner, so that the probability of ripple current generated in the circuit of the battery pack charging apparatus 1 can be reduced, the stability of the charging voltage of the battery pack 2 is ensured, and the power quality can be improved.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a first positive contactor 500, a resistor 510, and a second positive contactor 520.
The two ends of the first positive contactor 500 are respectively connected to the positive electrode of the battery pack 2 and the positive electrode of the first dc charging interface 100, one end of the resistor 510 is connected to the positive electrode of the first dc charging interface 100, and the two ends of the second positive contactor 520 are respectively connected to the positive electrode of the battery pack 2 and the other end of the resistor 510.
That is, the second positive contactor 520 and the resistor 510 are connected in series and then connected in parallel with the first positive contactor 500. Therefore, when the first dc charging interface 100 is just connected to a charging device (such as a charging cabinet), the voltage difference between the first dc charging interface 100 and the battery pack 2 may be relatively large, at this time, the first anode contactor 500 is directly attracted, and a capacitor in the charging cabinet is regarded as a short circuit, which may cause damage to the first anode contactor 500 and the battery pack 2, so that the second anode contactor 520 is attracted first, and a current in the charging cabinet may flow to the battery pack 2 through the resistor 510 and the second anode contactor 520, and the resistor 510 and the second anode contactor 520 play a role of pre-charging, so as to reduce the voltage difference between the first dc charging interface 100 and the battery pack 2 to be similar or equal, thereby avoiding damage to the devices such as the first dc charging interface 100, the first anode contactor 500, and the battery pack 2, which is beneficial to improving the circuit safety of the battery pack charging apparatus 1, and enabling the battery pack charging apparatus 1 to normally charge the battery pack 2.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a first negative contactor 600 and a first hall 610.
The negative pole of battery package 2 and the negative pole of first direct current interface 100 that charges are connected respectively to the both ends of first negative pole contactor 600, connect through first conductive structure between the negative pole of first negative pole contactor 600 and battery package 2, and first conductive structure is located to first hall 610 cover.
Thus, when the battery pack charging device 1 charges the battery pack 2 through the first dc charging interface 100, the current flows to the battery pack 2 after flowing through the first dc charging interface 100, the first negative contactor 600 and the first hall 610, and at this time, the first hall 610 can be used to monitor the charging current of the first dc charging interface 100. The first hall 610 can be used to monitor the output current of the battery pack 2 when the battery pack 2 is not being charged, but is being supplied with power to the control unit 300.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a boost capacitor 700, one end of the boost capacitor 700 is connected to the positive electrode of the second dc charging interface 200 and one end of the inductor 400, and the other end of the boost capacitor 700 is connected to the negative electrode of the battery pack 2.
That is to say, the two ends of the boost capacitor 700 can be respectively communicated with the two ends of the second dc charging interface 200, so that the boost capacitor 700 can absorb the ripple current of the second dc charging interface 200, and filter the input current of the second dc charging interface 200, so as to stabilize the input voltage of the second dc charging interface 200, and make the charging voltage of the battery pack charging device 1 to the battery pack 2 more stable.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a third positive contactor 530 and a second negative contactor 620.
The two ends of the third positive contactor 530 are connected to the positive electrode of the second dc charging interface 200 and one end of the boost capacitor 700, respectively, and the two ends of the second negative contactor 620 are connected to the negative electrode of the battery pack 2 and the negative electrode of the second dc charging interface 200, respectively.
In this way, the third positive contactor 530 may control on/off between the positive electrode of the second dc charging interface 200 and the positive electrode of the battery pack 2 and the positive electrode of the first dc charging interface 100, respectively, and the second negative contactor 620 may control on/off between the negative electrode of the second dc charging interface 200 and the negative electrode of the battery pack 2 and the negative electrode of the first dc charging interface 100, respectively. When the battery pack charging device 1 charges the battery pack 2 through the second dc charging interface 200, the third positive electrode contactor 530 and the second negative electrode contactor 620 may be conducted to charge the battery pack 2 through the second dc charging interface 200, and the boost capacitor 700 may absorb ripple current of the second dc charging interface 200 to filter input current of the second dc charging interface 200 to stabilize the input voltage of the second dc charging interface 200; when the first dc charging interface 100 is connected to the battery pack 2 and charges the battery pack 2, the third positive contactor 530 and the second negative contactor 620 may be disconnected, and by setting the third positive contactor 530 and the second negative contactor 620, on one hand, selection of a charging circuit of the battery pack 2 can be controlled, so that charging flexibility of the battery pack 2 is improved, and on the other hand, current of the first dc charging interface 100 can be prevented from flowing to the second dc charging interface 200, so that a potential safety hazard of current brought to the second dc charging interface 200 when the first dc charging interface 100 charges the battery pack 2 is prevented, and circuit safety is improved.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a fourth positive contactor 540 and a second hall 550.
One end of the fourth positive contactor 540 is connected to one end of the boost capacitor 700 and the third positive contactor 530, the other end of the fourth positive contactor 540 is connected to one end of the inductor 400, the fourth positive contactor 540 is connected to the third positive contactor 530 through the second conductive structure, and the second conductive structure is sleeved with the second hall 550.
Like this, fourth positive contactor 540 can control the break-make between inductance 400 and the second direct current interface 200 that charges, when battery package charging device 1 charges for battery package 2 through the second direct current interface 200 that charges, fourth positive contactor 540 can switch on, in order to realize the electric current circulation between second direct current interface 200 and the inductance 400 that charges, and, when the electric current flows to inductance 400 through second direct current interface 200 that charges, the electric current can flow through second hall 550, second hall 550 can be used for monitoring the charging current of second direct current interface 200 this moment, further improve battery package charging device 1's the security of charging. When the battery pack 2 supplies power to the control unit 300 and the motor 330, the circuit on the control unit 300 and the motor 330 can be prevented from flowing to the second dc charging interface 200, and the circuit safety is further improved.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes an X capacitor 710, and the X capacitor 710 may be a flat-wave capacitor.
Both ends of the X capacitor 710 are respectively connected to the positive electrode and the negative electrode of the battery pack 2, so that the X capacitor 710 can absorb ripple current to achieve the purpose of stabilizing the output voltage of the battery pack 2 and the charging voltage input to the battery pack 2. Also, an X capacitor 710 can be used to eliminate differential mode interference.
According to some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a first Y capacitor 720, a second Y capacitor 730, a third Y capacitor 740, and a fourth Y capacitor 750.
One end of the first Y capacitor 720 is connected to the positive electrode of the battery pack 2, the other end of the first Y capacitor 720 is grounded, one end of the second Y capacitor 730 is connected to the negative electrode of the battery pack 2, the other end of the second Y capacitor 730 is grounded, one end of the third Y capacitor 740 is connected to the positive electrode of the second dc charging interface 200, the other end of the third Y capacitor 740 is grounded, one end of the fourth Y capacitor 750 is connected to the negative electrode of the second dc charging interface 200, and the other end of the fourth Y capacitor 750 is grounded. In this way, common mode interference with the positive and negative electrodes of the battery pack 2 in the entire circuit and common mode interference with the positive and negative electrodes of the second dc charging interface 200 in the entire circuit can be avoided.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a first negative electrode fuse 630, one end of the first negative electrode fuse 630 is connected to the negative electrode of the battery pack 2, and the other end is connected to the lower bridge arm 323, and by setting the first negative electrode fuse 630, the driving current of the battery pack 2 to the lower bridge arm 323 can be avoided from being too large, thereby playing a role of driving fuse.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a PTC800 and an air conditioner compressor 820.
The positive pole of the PTC800 is connected to the positive pole of the battery pack 2, the negative pole of the PTC800 is connected to the negative pole of the battery pack 2 through the second negative pole fuse 810, the positive pole of the air conditioner compressor 820 is connected to the positive pole of the battery pack 2, and the negative pole of the air conditioner compressor 820 is connected to the negative pole of the battery pack 2 through the third negative pole fuse 830.
Thus, the battery pack 2 can supply power to the PTC800 and the air conditioner compressor 820, the second negative electrode fuse 810 can prevent the battery pack 2 from having an excessive current flowing to the PTC800, and the third negative electrode fuse 830 can prevent the battery pack 2 from having an excessive current flowing to the air conditioner compressor 820, thereby further improving the safety of electrical connection.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes an ac charging interface 900, an On-board Charger 910 (OBC), a DC/DC module 920, and a fourth negative electrode fuse 930.
The input end of the vehicle-mounted charger 910 is connected with the alternating current charging interface 900, the input end of the DC/DC module 920 is connected with the output end of the vehicle-mounted charger 910, the output end of the DC/DC module 920 is connected with the battery pack 2, and the output end of the DC/DC module 920 is connected with the battery pack 2 through the fourth negative electrode fuse 930.
The vehicle-mounted charger 910 has a function of converting alternating current to direct current, the DC/DC module 920 is used for converting high-voltage direct current of the vehicle-mounted charger 910 into low-voltage direct current, the alternating current charging interface 900 can be connected with a high-voltage alternating current power supply, the vehicle-mounted charger 910 converts alternating current of the alternating current charging interface 900 into direct current and then supplies power to the battery pack 2 through the DC/DC module 920, and the fourth negative electrode fuse 930 can prevent the DC/DC module 920 from generating overlarge charging current to the battery pack 2.
In some embodiments of the present invention, as shown in fig. 1, the battery pack charging apparatus 1 further includes a first magnetic ring 940 and a second magnetic ring 950.
The battery pack 2 is connected with the bridge arm 321 through a third conductive structure, the first magnetic ring 940 surrounds the third conductive structure, the second direct-current charging interface 200 is connected with the battery pack 2 and the inductor 400 through a fourth conductive structure, and the second magnetic ring 950 surrounds the fourth conductive structure.
The first magnetic ring 940 and the second magnetic ring 950 have a good suppression effect on high-frequency noise and have an anti-interference effect, so that fluctuation of direct-current voltage input from the second direct-current charging interface 200 to the battery pack charging device 1 is reduced, and fluctuation of direct-current voltage input from the battery pack charging device 1 to the battery pack 2 is reduced, so that fluctuation range and fluctuation frequency of charging voltage of the battery pack 2 are greatly reduced, stability of charging voltage of the battery pack 2 is higher, charging safety of the battery pack 2 can be improved, loss of the battery pack 2 due to fluctuation of charging voltage can be avoided, and service life of the battery pack 2 is prolonged.
A vehicle according to an embodiment of the present invention is described below with reference to the drawings, the vehicle including the battery pack charging device 1 according to the above-described embodiment of the present invention.
According to the utility model discloses vehicle, through utilizing according to the utility model discloses battery package charging device 1 of above-mentioned embodiment not only can step up to battery package 2 and charge, can have two direct current interfaces that charge moreover, can promote charging power, shortens charge time.
Other configurations and operations of the battery pack charging apparatus 1 and the vehicle having the same according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (15)

1. A battery pack charging apparatus, comprising:
the positive electrode of the first direct-current charging interface is connected with the positive electrode of the battery pack, and the negative electrode of the first direct-current charging interface is connected with the negative electrode of the battery pack;
the negative electrode of the second direct-current charging interface is connected with the negative electrode of the battery pack;
the control unit comprises a control module and a driving module, the control module is used for sending a signal for controlling the driving module to execute, the driving module comprises at least one phase of bridge arm, the bridge arm comprises an upper bridge arm and a lower bridge arm, the upper bridge arm is connected with the anode of the battery pack, and the lower bridge arm is connected with the cathode of the battery pack; and
and one end of the inductor is connected to the anode of the second direct current charging interface, and the other end of the inductor is connected to the midpoint of the bridge arm.
2. The battery pack charging apparatus of claim 1, wherein the inductor is at least one phase winding of an electric machine.
3. The battery pack charging apparatus of claim 1, wherein the inductor is a three-phase winding of an electric machine;
the control unit comprises a motor controller, the motor controller comprises the driving module, the driving module comprises three-phase bridge arms, the three-phase bridge arms respectively comprise the upper bridge arm and the lower bridge arm, the upper bridge arms are connected with the positive pole of the battery pack after being connected in a tandem manner, and the lower bridge arms are connected with the negative pole of the battery pack after being connected in a tandem manner;
and one end of the three-phase winding is respectively connected to the middle points of the three-phase bridge arms, and the other end of the three-phase winding is connected to the anode of the second direct-current charging interface through an N line after being connected in a junction mode.
4. The battery pack charging apparatus according to claim 1, further comprising:
the two ends of the first positive contactor are respectively connected to the positive electrode of the battery pack and the positive electrode of the first direct-current charging interface;
one end of the resistor is connected to the positive electrode of the first direct current charging interface; and
and the two ends of the second anode contactor are respectively connected to the anode of the battery pack and the other end of the resistor.
5. The battery pack charging apparatus according to claim 1, further comprising:
the two ends of the first negative contactor are respectively connected with the negative electrode of the battery pack and the negative electrode of the first direct current charging interface; and
the first Hall, the first negative pole contactor with connect through first conductive structure between the negative pole of battery package, first Hall cover is located first conductive structure.
6. The battery pack charging apparatus according to claim 1, further comprising:
and one end of the boost capacitor is connected with the anode of the second direct-current charging interface and one end of the inductor, and the other end of the boost capacitor is connected with the cathode of the battery pack.
7. The battery pack charging apparatus according to claim 6, further comprising:
two ends of the third positive contactor are respectively connected to the positive electrode of the second direct-current charging interface and one end of the boost capacitor; and
and two ends of the second negative electrode contactor are respectively connected with the negative electrode of the battery pack and the negative electrode of the second direct-current charging interface.
8. The battery pack charging apparatus according to claim 7, further comprising:
one end of the fourth positive contactor is connected to the one end of the boost capacitor and the third positive contactor, and the other end of the fourth positive contactor is connected to the one end of the inductor; and
and the fourth positive contactor is connected with the third positive contactor through a second conductive structure, and the second Hall is sleeved on the second conductive structure.
9. The battery pack charging apparatus according to claim 1, further comprising:
and two ends of the X capacitor are respectively connected to the anode and the cathode of the battery pack.
10. The battery pack charging apparatus according to claim 1, further comprising:
and one end of the first negative electrode fuse is connected with the negative electrode of the battery pack, and the other end of the first negative electrode fuse is connected with the lower bridge arm.
11. The battery pack charging apparatus according to claim 1, further comprising:
the positive electrode of the PTC is connected with the positive electrode of the battery pack, and the negative electrode of the PTC is connected with the negative electrode of the battery pack through a second negative electrode fuse; and
and the positive electrode of the air-conditioning compressor is connected with the positive electrode of the battery pack, and the negative electrode of the air-conditioning compressor is connected with the negative electrode of the battery pack through a third negative electrode fuse.
12. The battery pack charging apparatus according to claim 1, further comprising:
an alternating current charging interface;
the input end of the vehicle-mounted charger is connected with the alternating current charging interface; and
the input end of the DC/DC module is connected with the output end of the vehicle-mounted charger, and the output end of the DC/DC module is connected with the battery pack; and
and the output end of the DC/DC module is connected with the battery pack through the fourth negative electrode fuse.
13. The battery pack charging apparatus according to claim 1, further comprising:
the battery pack is connected with the bridge arm through a third conductive structure, and the first magnetic ring surrounds the third conductive structure; and
the second direct-current charging interface is connected with the battery pack and the inductor through a fourth conductive structure, and the second magnetic ring surrounds the fourth conductive structure.
14. The battery pack charging apparatus according to claim 1, further comprising:
one end of the first Y capacitor is connected with the anode of the battery pack, and the other end of the first Y capacitor is grounded;
one end of the second Y capacitor is connected with the negative electrode of the battery pack, and the other end of the second Y capacitor is grounded;
one end of the third Y capacitor is connected with the anode of the second direct current charging interface, and the other end of the third Y capacitor is grounded;
and one end of the fourth Y capacitor is connected with the negative electrode of the second direct current charging interface, and the other end of the fourth Y capacitor is grounded.
15. A vehicle characterized by comprising a battery pack charging apparatus according to any one of claims 1 to 14.
CN202222399499.0U 2022-09-08 2022-09-08 Battery pack charging device and vehicle with same Active CN218228669U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222399499.0U CN218228669U (en) 2022-09-08 2022-09-08 Battery pack charging device and vehicle with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222399499.0U CN218228669U (en) 2022-09-08 2022-09-08 Battery pack charging device and vehicle with same

Publications (1)

Publication Number Publication Date
CN218228669U true CN218228669U (en) 2023-01-06

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Country Status (1)

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CN (1) CN218228669U (en)

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