CN210101381U - Battery charging device of electric automobile - Google Patents
Battery charging device of electric automobile Download PDFInfo
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- CN210101381U CN210101381U CN201920753190.2U CN201920753190U CN210101381U CN 210101381 U CN210101381 U CN 210101381U CN 201920753190 U CN201920753190 U CN 201920753190U CN 210101381 U CN210101381 U CN 210101381U
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- power supply
- voltage sampling
- electric automobile
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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
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Abstract
The utility model provides an electric automobile battery charging device, it includes: the device comprises a control module, a direct current power supply, a total positive switch, a total negative switch, a low-power compensation power supply set and a module voltage sampling unit. The utility model discloses an electric automobile battery charging device has solved the problem of charging of quick change battery, and it is through setting up miniwatt compensation power supply package for the energy of each module can both be close full energy state in the electric automobile battery, makes the whole depth of discharge of battery after being full of have very big improvement, has improved electric automobile's continuation of the journey mileage.
Description
Technical Field
The utility model relates to an electric automobile technical field especially relates to an electric automobile battery charging device.
Background
In order to solve the problem that the charging speed of the electric automobile is too slow, the quick replacement of the power batteries of the electric automobile is a development trend at present, but the states of the replaced batteries of different vehicles are inconsistent, the consistency of a plurality of power batteries is unbalanced due to the problems of the quality of electric cores or the use habits of drivers, and the power batteries cannot be fully charged and discharged due to the short plate effect. Therefore, it is necessary to provide a further solution to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric automobile battery charging device to overcome the not enough that exists among the prior art.
In order to solve the technical problem, the technical scheme of the utility model is that:
an electric vehicle battery charging apparatus, comprising: the device comprises a control module, a direct-current power supply, a total positive switch, a total negative switch, a low-power compensation power supply set and a module voltage sampling unit;
the direct current power supply is provided with a charging circuit electrically connected to a battery of the electric automobile, the total positive switch and the total negative switch are arranged on the charging circuit, the total positive switch is arranged close to the positive pole of the direct current power supply, and the total negative switch is arranged close to the negative pole of the direct current electric eye;
the control module includes: the module voltage sampling unit is connected between the controller and the electric vehicle battery, and the controller is connected with the current regulator through the selector switch;
the miniwatt compensation power supply package with the integrated setting of module voltage sampling unit, the passageway in electric automobile battery is connected in the two sharing, the miniwatt compensation power supply package includes: a plurality of compensation power supplies arranged in parallel, wherein any one of the compensation power supplies is provided with an independent switch controlled by the control module;
the module voltage sampling unit includes: a plurality of voltage sampling circuits arranged in parallel, any of the voltage sampling circuits comprising: the operational amplifier, connect in the first resistance of operational amplifier inverting input end, connect in the second resistance of operational amplifier non inverting input end, parallelly connected in the third resistance of inverting input end and non inverting input end, the output of operational amplifier passes through the passageway is connected to the electric automobile battery.
As the utility model discloses an electric automobile battery charging device's improvement, control module through communication bus with module voltage sampling unit is connected.
As the utility model discloses an electric automobile battery charging device's improvement, communication bus is CAN communication bus.
As an improvement of the electric vehicle battery charging apparatus of the present invention, the controller is an automobile-level processor with model number S912XDP512F0 MAL.
As the utility model discloses an electric automobile battery charging device's improvement, operational amplifier's model is LM 358D.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an electric automobile battery charging device has solved the problem of charging of quick change battery, and it is through setting up miniwatt compensation power supply package for the energy of each module can both be close full energy state in the electric automobile battery, makes the whole depth of discharge of battery after being full of have very big improvement, has improved electric automobile's continuation of the journey mileage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic connection diagram of an embodiment of an electric vehicle battery charging apparatus according to the present invention;
fig. 2 is a circuit diagram of a voltage sampling circuit in an embodiment of the electric vehicle battery charging apparatus of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses an electric automobile battery charging device includes: the device comprises a control module, a direct current power supply, a total positive switch, a total negative switch, a low-power compensation power supply set and a module voltage sampling unit.
The direct current power supply is provided with a charging circuit electrically connected to a battery of the electric automobile, the total positive switch and the total negative switch are arranged on the charging circuit, the total positive switch is close to the positive pole of the direct current power supply, and the total negative switch is close to the negative pole of the direct current electric eye.
The control module includes: the module voltage sampling unit is connected between the controller and the electric automobile battery, and the controller is connected with the current regulator through the selector switch.
The miniwatt compensation power supply package with the integrated setting of module voltage sampling unit, the passageway in electric automobile battery is connected in the two sharing, the miniwatt compensation power supply package includes: and a plurality of compensation power supplies arranged in parallel, wherein any one of the compensation power supplies is provided with an independent switch controlled by the control module.
The module voltage sampling unit includes: a plurality of voltage sampling circuits arranged in parallel, any of the voltage sampling circuits comprising: the operational amplifier, connect in the first resistance of operational amplifier inverting input end, connect in the second resistance of operational amplifier non inverting input end, parallelly connected in the third resistance of inverting input end and non inverting input end, the output of operational amplifier passes through the passageway is connected to the electric automobile battery.
The technical solution of the charging device for electric vehicle battery according to the present invention is exemplified below with reference to a specific embodiment. It should be noted that all the electronic devices according to the present embodiment are conventional electronic devices, and the present embodiment only describes the connection relationship between the electronic devices, and does not relate to the improvement of the electronic devices themselves. The model comparison relationship of each electronic device is as follows:
-a controller: s912XDP512F0MAL, Freescale Inc
-an operational amplifier: LM358D
The direct current power supply, the total positive switch, the total negative switch, the compensation power supply and the first to third resistors are all conventional electronic devices.
As shown in fig. 1 and 2, the electric vehicle battery charging apparatus of the present embodiment includes: the device comprises a control module 1, a direct current power supply 2, a total positive switch 3, a total negative switch 4, a low-power compensation power supply pack 5 and a module voltage sampling unit 6.
The control module 1 comprises: the device comprises a current regulator 11, a selector switch 12 and a controller 13, wherein the current regulator 11 is connected between the direct current power supply 2 and an electric vehicle battery, the module voltage sampling unit 6 is connected between the controller 13 and the electric vehicle battery, and the controller 13 is connected with the current regulator 11 through the selector switch 12.
The low power compensation power supply pack 5 and the module voltage sampling unit 6 are integrally provided, and both are connected to a channel 51 of an electric vehicle battery, and the low power compensation power supply pack 5 includes: a number of compensation power supplies arranged in parallel, any of which has an independent switch 52 controlled by the control module 1.
The module voltage sampling unit 6 includes: a plurality of voltage sampling circuits arranged in parallel, any of the voltage sampling circuits comprising: the operational amplifier 61, a first resistor 62 connected to the inverting input terminal of the operational amplifier 61, a second resistor 63 connected to the non-inverting input terminal of the operational amplifier 61, and a third resistor 64 connected in parallel to the inverting input terminal and the non-inverting input terminal, wherein the output terminal of the operational amplifier 61 is connected to the battery of the electric vehicle through the channel 51. Meanwhile, the control module 1 is connected with the module voltage sampling unit 6 through a communication bus. Preferably, the communication bus is a CAN communication bus.
The working process of the electric vehicle battery charging device of the embodiment is as follows: the total positive and total negative of the battery pack are connected with the device, the control module 1 of the device learns the total voltage of the battery according to the total positive and total negative acquisition points, so as to obtain the current electric quantity percentage of the battery, the control module 1 controls the output current of the direct current power supply 2 in a pulse duty modulation mode, the charging current is linearly adjusted according to the feeding current of the battery, meanwhile, the control module 1 is communicated with the low-power compensation power supply pack 5 through a bus, the compensation power supply pack obtains the voltage of each module in the battery in real time through a module voltage sampling unit 6, when the voltage of any module reaches a full-charge critical value, the control module 1 cuts off the total positive and total negative switches, the integral energy of the battery pack is close to a full value, but due to the internal resistance and consistency of the battery cells and the like, the energy of not each module in the device is in a full-charge state, and the control module 1, and judging which modules have energy not reaching the full charge critical value, turning off the switch of the full charge module, turning on the switch of the unfilled module, sequentially supplementing energy to the corresponding modules through the low-power compensation power supply, and finishing charging when the energy of all the modules reaches the full charge critical voltage. Since the controller 13 is a known controller, the operation principle of the controller 13 will not be described in detail in this embodiment.
To sum up, the utility model discloses an electric automobile battery charging device has solved the problem of charging of quick change battery, and it is through setting up miniwatt compensation power supply package for the energy of each module can both be close full energy state in the electric automobile battery, makes the whole depth of discharge of battery after being full of have very big improvement, has improved electric automobile's continuation of the journey mileage.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. An electric vehicle battery charging apparatus, comprising: the device comprises a control module, a direct-current power supply, a total positive switch, a total negative switch, a low-power compensation power supply set and a module voltage sampling unit;
the direct current power supply is provided with a charging circuit electrically connected to a battery of the electric automobile, the total positive switch and the total negative switch are arranged on the charging circuit, the total positive switch is arranged close to the positive pole of the direct current power supply, and the total negative switch is arranged close to the negative pole of the direct current electric eye;
the control module includes: the module voltage sampling unit is connected between the controller and the electric vehicle battery, and the controller is connected with the current regulator through the selector switch;
the miniwatt compensation power supply package with the integrated setting of module voltage sampling unit, the passageway in electric automobile battery is connected in the two sharing, the miniwatt compensation power supply package includes: a plurality of compensation power supplies arranged in parallel, wherein any one of the compensation power supplies is provided with an independent switch controlled by the control module;
the module voltage sampling unit includes: a plurality of voltage sampling circuits arranged in parallel, any of the voltage sampling circuits comprising: the operational amplifier, connect in the first resistance of operational amplifier inverting input end, connect in the second resistance of operational amplifier non inverting input end, parallelly connected in the third resistance of inverting input end and non inverting input end, the output of operational amplifier passes through the passageway is connected to the electric automobile battery.
2. The electric vehicle battery charging apparatus of claim 1, wherein the control module is connected to the module voltage sampling unit via a communication bus.
3. The electric vehicle battery charging apparatus of claim 2, wherein the communication bus is a CAN communication bus.
4. The electric vehicle battery charging apparatus of claim 1, wherein the controller is an automotive grade processor model number S912XDP512F0 MAL.
5. The battery charging device of claim 1, wherein the operational amplifier is model LM 358D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920753190.2U CN210101381U (en) | 2019-05-23 | 2019-05-23 | Battery charging device of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920753190.2U CN210101381U (en) | 2019-05-23 | 2019-05-23 | Battery charging device of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210101381U true CN210101381U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920753190.2U Active CN210101381U (en) | 2019-05-23 | 2019-05-23 | Battery charging device of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210101381U (en) |
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2019
- 2019-05-23 CN CN201920753190.2U patent/CN210101381U/en active Active
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