CN113561833A

CN113561833A - Charging and discharging voltage monitoring system for electric vehicle

Info

Publication number: CN113561833A
Application number: CN202110882224.XA
Authority: CN
Inventors: 曾超明; 杨顺; 杨飞飞; 陈浩
Original assignee: Zhihexin Electronic Technology Nanjing Co ltd
Current assignee: Zhihexin Electronic Technology Nanjing Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-10-29

Abstract

The charging and discharging voltage monitoring system of the electric vehicle is connected with the energy storage battery through the electric quantity detection unit and used for responding to a connection signal of the energy storage battery and the charging pile and detecting the amount of charge to be charged of the energy storage battery; the conversion unit is connected with the electric quantity detection unit and used for converting the amount to be charged into the time to be charged according to the charging parameters of the charging pile; the time distribution unit is connected with the conversion unit, acquires a first time point for generating a connection signal, receives a second time point input by a user, and acquires first charging time and second charging time based on the first time point, the second time point, the time to be charged and a preset peak-valley charging period; the charging unit is connected with the time distribution unit, charges in the peak time charging section based on the first charging time, and automatically adjusts the charging time according to the requirements of users based on the technical scheme that the charging is performed in the peak valley charging section based on the second charging time so as to reduce the charging cost of the users.

Description

Charging and discharging voltage monitoring system for electric vehicle

Technical Field

The invention relates to a battery technology, in particular to a charging and discharging voltage monitoring system of an electric vehicle.

Background

At present, according to the different unit prices of the electricity charges in different time periods, the electricity is intensively charged according to the public electricity, generally, the peak time period from eight points in the morning to ten points in the evening is regarded as the peak valley time period, and the peak valley time period from ten points in the evening to eight points in the next morning is regarded as the peak valley time period. The unit price of the electricity fee varies depending on regions, but the price of the electricity fee is kept uniform when the peak period is higher than the peak and valley period, and is generally 1.5 times or more the unit price of the electricity fee when the peak period is long. The charging pile is a device for charging the electric vehicle, a plurality of charging sockets are arranged on the upper side of the charging pile, a user cannot avoid a peak period during charging, and the corresponding charging cost is higher.

Disclosure of Invention

The embodiment of the invention provides a charging and discharging voltage monitoring system for an electric vehicle, which can automatically adjust the charging time according to the requirements of users so as to reduce the charging cost of the users.

In a first aspect of the embodiments of the present invention, a charging and discharging voltage monitoring system for an electric vehicle is provided, including an energy storage battery and a charging pile, including:

the electric quantity detection unit is connected with the energy storage battery and used for responding to a connection signal of the energy storage battery and the charging pile and detecting the amount of electricity to be charged of the energy storage battery;

the conversion unit is connected with the electric quantity detection unit and used for converting the to-be-charged amount into to-be-charged time according to the charging parameters of the charging pile;

the time distribution unit is connected with the conversion unit, acquires a first time point for generating the connection signal, receives a second time point input by a user, and acquires a first charging time and a second charging time based on the first time point, the second time point, the time to be charged and a preset peak-valley charging period;

and the charging unit is connected with the time distribution unit and is used for charging in a peak-time charging section based on the first charging time and in a peak-valley charging section based on the second charging time.

Optionally, in a possible implementation manner of the first aspect, the obtaining a first charging time and a second charging time based on the first time point, the second time point, the time to be charged, and a preset peak-to-valley charging period includes:

acquiring a chargeable time period based on the first time point and the second time point;

if the peak-valley charging section is overlapped with the chargeable time section, taking the overlapped part as a second charging time;

and acquiring the first charging time based on the difference value between the time to be charged and the second charging time.

Optionally, in a possible implementation manner of the first aspect, before the obtaining the first charging time and the second charging time, the method further includes:

and the first judgment unit is used for determining that the time to be charged is less than the chargeable time period.

a second determining unit configured to determine that the peak-valley charging period overlaps with the chargeable time period.

Optionally, in a possible implementation manner of the first aspect, the obtaining a chargeable period based on the first time point and the second time point includes:

and acquiring the chargeable time period by taking the first time point as a starting point and the second time point as an end point.

Optionally, in a possible implementation manner of the first aspect, the charging unit includes:

a receiving unit configured to receive the first charging time and the second charging time;

the switching unit comprises a first terminal and a second terminal, and a relay is arranged between the first terminal and the second terminal;

the opening and closing unit is used for controlling the normally open contact of the relay to be closed in the first charging time and the second charging time.

Optionally, in a possible implementation manner of the first aspect, the converting the amount to be charged into a time to be charged according to a charging parameter of the charging pile includes:

T＝U*1.23/I*60

wherein, T represents the time to be charged in minutes, U represents the amount to be charged in mAh, and I represents the charging current in mA.

Optionally, in a possible implementation manner of the first aspect, the power detecting unit includes:

and the coulometer unit is used for detecting the current electric quantity and the maximum electric quantity value of the energy storage battery and acquiring the charge quantity to be charged based on the maximum electric quantity value and the current electric quantity.

The charging and discharging voltage monitoring system of the electric vehicle is connected with the energy storage battery through the electric quantity detection unit and used for responding to a connection signal of the energy storage battery and the charging pile and detecting the amount of the energy storage battery to be charged; the conversion unit is connected with the electric quantity detection unit and used for converting the to-be-charged amount into to-be-charged time according to the charging parameters of the charging pile; the time distribution unit is connected with the conversion unit, acquires a first time point for generating the connection signal, receives a second time point input by a user, and acquires a first charging time and a second charging time based on the first time point, the second time point, the time to be charged and a preset peak-valley charging period; the charging unit is connected with the time distribution unit, charges in the peak time charging section based on the first charging time, acquires the time for charging the battery by using a second time point input by a user based on the technical scheme that the second charging time charges in the peak valley charging section, and then distributes the time, so that the time in the peak valley charging section is maximized during distribution, the cost is reduced, and the charging time can be automatically adjusted according to the requirements of the user so as to reduce the charging cost of the user.

Drawings

Fig. 1 is a schematic structural diagram of a charging and discharging voltage monitoring system of an electric vehicle according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a hardware structure of a charging and discharging voltage monitoring device for an electric vehicle according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

It should be understood that in the present application, "comprising" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that, in the present invention, "a plurality" means two or more. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, for example, and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "comprises A, B and C" and "comprises A, B, C" means that all three of A, B, C comprise, "comprises A, B or C" means that one of A, B, C comprises, "comprises A, B and/or C" means that any 1 or any 2 or 3 of A, B, C comprises.

It should be understood that in the present invention, "B corresponding to a", "a corresponds to B", or "B corresponds to a" means that B is associated with a, and B can be determined from a. Determining B from a does not mean determining B from a alone, but may be determined from a and/or other information. And the matching of A and B means that the similarity of A and B is greater than or equal to a preset threshold value.

As used herein, "if" may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

The execution subject of the present application may include, but is not limited to, at least one of: user equipment, network equipment, etc. The user equipment may include, but is not limited to, a computer, a smart phone, a Personal Digital Assistant (PDA), the above mentioned electronic equipment, and the like. The network device may include, but is not limited to, a single network server, a server group of multiple network servers, or a cloud of numerous computers or network servers based on cloud computing, wherein cloud computing is one type of distributed computing, a super virtual computer consisting of a cluster of loosely coupled computers. The present embodiment does not limit this.

Referring to fig. 1, an electric motor car charge-discharge voltage monitoring system, includes energy storage battery and fills electric pile, and it can be understood that, energy storage battery supplies power for the electric motor car, when needing to charge, needs to drive the electric motor car to the position of filling electric pile, is connected energy storage battery with filling electric pile, carries out the energy storage.

The electric vehicle charging and discharging voltage monitoring system 10 comprises an electric quantity detection unit 11, a conversion unit 12, a time distribution unit 13 and a charging unit 14 which are sequentially connected, and specifically comprises the following steps:

electric quantity detection unit 11:

the electric quantity detection unit 11 is connected with the energy storage battery and used for responding to a connection signal between the energy storage battery and the charging pile and detecting the amount of charge to be charged of the energy storage battery. It can be understood that, when energy storage battery needs to charge, need establish and fill the connection between the electric pile, this embodiment can generate the connection signal when detecting energy storage battery and filling the connection between the electric pile, then detects energy storage battery's the charge amount of waiting.

In practical applications, the electric quantity detection unit 11 includes a coulometer unit, and is configured to detect a current electric quantity and a maximum electric quantity value of the energy storage battery, and obtain the to-be-charged quantity based on the maximum electric quantity value and the current electric quantity.

For example, if the total power of the energy storage battery is 1000mAh and the current power is 100mAh, the amount to be charged can be calculated to be 900 mAh.

The conversion unit 12:

the conversion unit 12 is connected to the electric quantity detection unit 11, and is configured to convert the to-be-charged amount into to-be-charged time according to the charging parameter of the charging pile.

In practical application, according to the charging parameter of the charging pile, the charging quantity to be charged is converted into the charging time, and the method comprises the following steps:

T＝U*1.23/I*60

It is understood that each charging pile has its charging parameter, which may be the above-mentioned charging current, for example, 40mA, and U represents the amount to be charged, for example, 700mAh, and then the corresponding time to be charged T can be calculated.

And the time distribution unit 13 is connected with the conversion unit 12, acquires a first time point for generating the connection signal, receives a second time point input by a user, and acquires a first charging time and a second charging time based on the first time point, the second time point, the time to be charged and a preset peak-valley charging period.

It will be appreciated that the time allocation may begin after the time to charge is available. In practical applications, the user will use the vehicle again the next day after charging, for example, user a may be at 21: 00 to charge pile ready to charge, it takes 8 hours to charge to fill the vehicle, i.e. if charging is continued, it takes 5: 00, the electric quantity can be fully charged, and the time that the user needs to use the vehicle is 7: 00, i.e. the first time point is 21: 00, second time point 7: 00.

further, the chargeable period may be acquired based on the first time point and the second time point, and specifically, the chargeable period may be acquired with the first time point as a starting point and the second time point as an ending point.

Illustratively, the first time point is 21: 00, second time point 7: 00, then the chargeable period is 21: 00-7: 00.

wherein, the preset peak-valley charging section can be 1: 00-8: 00, chargeable period of time 21: 00-7: 00, the overlapping part time of the peak-valley charging section and the charging time section is 1: 00-7: 00, then 1: 00-7: and 00 is the second charging time.

Then, the first charging time is obtained based on the difference between the time to be charged and the second charging time, and if the vehicle can be fully charged after being charged for 8 hours, the duration of the first charging time is 1 hour, so that the first charging time is 21: 00-1: and any one hour between 00 is needed, namely the final distribution scheme is that the peak time charging section is charged for 1 hour, and the peak valley charging section is charged for 7 hours, so that the user can charge at low cost.

In addition, according to the scheme, the time distribution mode can be automatically adjusted according to the second time point set by the user. For example, if a charge of 7 hours is required to fill the vehicle, and the second time point is 8: 00, the preset peak-valley charging section is 1: 00-8: 00, then the charging time of the vehicle is completely in the range of 1: 00-8: 00, the charging cost of the user is minimized.

In practical applications, before the obtaining the first charging time and the second charging time, the method may further include: and the first judgment unit is used for determining that the time to be charged is less than the chargeable time period. Before the obtaining the first charging time and the second charging time, the method further includes: a second determining unit configured to determine that the peak-valley charging period overlaps with the chargeable time period.

It will be appreciated that when the time to be charged is greater than the chargeable period, the method of the present embodiment need not be employed to allocate time, since the primary task is to fully charge the vehicle for normal use by the user the next day. Or when it is determined that the peak-valley charging period and the chargeable period do not overlap, all the charging times are peak-time charging periods.

And a charging unit 14 connected to the time distribution unit and charging in a peak-time charging section based on the first charging time and charging in a peak-valley charging section based on the second charging time.

Wherein, the charging unit 14 includes:

a receiving unit 141 for receiving the first charging time and the second charging time;

the opening and closing unit 142 comprises a first terminal and a second terminal, and a relay is arranged between the first terminal and the second terminal;

It can be understood that the relay responds to the signal to control the normally open contact to be closed in the first charging time and the second charging time, so as to form a charging loop for charging, and to be opened in other time points.

The invention acquires the time for charging the battery by using the second time point input by the user, then allocates the time, maximizes the time of the peak-valley charging period during allocation, reduces the cost, and can automatically adjust the charging time according to the requirements of the user so as to reduce the charging cost of the user.

Referring to fig. 2, which is a schematic diagram of a hardware structure of an electric vehicle charging and discharging voltage monitoring device according to an embodiment of the present invention, the electric vehicle charging and discharging voltage monitoring device 20 includes: a processor 21, a memory 22 and a computer program; wherein

A memory 22 for storing the computer program, which may also be a flash memory (flash). The computer program is, for example, an application program, a functional module, or the like that implements the above method.

A processor 21 for executing the computer program stored in the memory to implement the steps performed by the apparatus in the above method. Reference may be made in particular to the description relating to the preceding method embodiment.

Alternatively, the memory 22 may be separate or integrated with the processor 21.

When the memory 22 is a device independent of the processor 21, the apparatus may further include:

a bus 23 for connecting the memory 22 and the processor 21.

The present invention also provides a readable storage medium, in which a computer program is stored, which, when being executed by a processor, is adapted to implement the methods provided by the various embodiments described above.

The readable storage medium may be a computer storage medium or a communication medium. Communication media includes any medium that facilitates transfer of a computer program from one place to another. Computer storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, a readable storage medium is coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Additionally, the ASIC may reside in user equipment. Of course, the processor and the readable storage medium may also reside as discrete components in a communication device. The readable storage medium may be a read-only memory (ROM), a random-access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

The present invention also provides a program product comprising execution instructions stored in a readable storage medium. The at least one processor of the device may read the execution instructions from the readable storage medium, and the execution of the execution instructions by the at least one processor causes the device to implement the methods provided by the various embodiments described above.

In the above embodiments of the apparatus, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an electric motor car charge-discharge voltage monitoring system, includes energy storage battery and fills electric pile, its characterized in that includes:

2. The system of claim 1, wherein the obtaining a first charging time and a second charging time based on the first time point, the second time point, the time to be charged, and a preset peak-to-valley charging period comprises:

3. The system of claim 2, further comprising, prior to said obtaining the first charge time and the second charge time:

4. The system of claim 3, further comprising, prior to said obtaining the first charge time and the second charge time:

5. The system of claim 1, wherein the obtaining the chargeable period based on the first point in time and the second point in time comprises:

6. The system of claim 1, wherein the charging unit comprises:

7. The system of claim 1, wherein the converting the amount to be charged into the time to be charged according to the charging parameters of the charging post comprises:

T＝U*1.23/I*60

8. The system of claim 1, wherein the charge detection unit comprises: