CN118219905A - Charging method and system for electric bicycle and electric bicycle - Google Patents
Charging method and system for electric bicycle and electric bicycle Download PDFInfo
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- CN118219905A CN118219905A CN202410482812.8A CN202410482812A CN118219905A CN 118219905 A CN118219905 A CN 118219905A CN 202410482812 A CN202410482812 A CN 202410482812A CN 118219905 A CN118219905 A CN 118219905A
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Abstract
The invention relates to a charging method, a system and an electric bicycle for the electric bicycle, wherein the method comprises the steps of setting two groups of batteries in the electric bicycle as a main battery and a secondary battery, firstly sending a handshake message to the batteries when a charger is charged, replying the handshake message to the charger by the batteries, stopping sending the handshake message after the charger receives the handshake message replied by the batteries, switching to sending a charging message to the batteries at regular time, and charging after the batteries receive the charging message sent by the charger, wherein the charging modes comprise four types, namely a main battery independent charging method, a secondary battery independent charging method and a secondary battery independent charging method, and a secondary battery first charging method, wherein the main battery is connected into the secondary battery for charging. The invention solves the problem of one charging and two charging of the charger.
Description
Technical Field
The invention relates to the technical field of electric power assisted bicycle charging, in particular to a charging method and system for an electric power assisted bicycle and the electric power assisted bicycle.
Background
The electric bicycle (ebi ke) is a famous electric bicycle, and is different from electric bicycle in light weight, has the characteristics which are obviously different from other vehicles, and the electric bicycle has the unique advantages. Benefits of an electric assist bicycle include: energy conservation, economy, flexibility and accessibility. The global market scale of eb i ke is gradually enlarged at present, and particularly the main sales area of ebi ke in the regions of asia, europe and north america, the overall market growth potential is available, but with the continuous favor of consumers to ebi ke, the performance requirements of the consumers are gradually improved, and the requirements are particularly expressed on the cruising of ebi ke.
In order to improve the cruising mileage of eb ike, the existing ebi ke is generally provided with 2 groups of batteries, meanwhile, the charging requirement on the batteries is increased, in the prior art, a charger matched with two paths of output is higher in cost, under the condition that the charging time is faster and faster nowadays, the two paths of output are not absolutely necessary, the two paths of output sometimes cause overheat charging, and the charger is also unfavorable.
The scheme commonly used at present is a charging mode of CAN communication, although the scheme CAN charge a plurality of groups of batteries, the charging cost of CAN communication is relatively high, and the control mode is relatively complex. Although this scheme may charge multiple sets of batteries.
In summary, a new charging method needs to be designed for ebi ke, which is simple in control method while considering cost.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems of complex charging mode and high cost of the battery pack of eb ike in the prior art.
In order to solve the technical problems, the invention provides a charging method for an electric bicycle, which comprises the following steps: when the first battery and the second battery of the electric boosting bicycle are required to be charged, the charger simultaneously sends a handshake message to the first battery and the second battery, and the first battery and the second battery can both receive the handshake message sent by the charger;
When the first battery receives the handshake message, the first battery immediately replies the handshake message to the charger, and after receiving the reply handshake message of the first battery, the charger sends a charging message to the first battery at regular time, the first battery opens a charging mos, and the charger charges the first battery; meanwhile, after the second battery receives the handshake message, the first N frames of handshake messages are filtered, at the moment, the charger is opposite to the first battery to charge, when the second battery waits for the first battery to charge, the handshake message of the charger is not received, the second battery does not open a charging mos, and charging is not carried out;
When the first battery is fully charged, the first battery is closed to charge mos, at the moment, the charger cannot recognize the battery voltage, then the charger resets and sends handshake messages to the first battery and the second battery at the same time at fixed time, the first battery is not replied after being fully charged, the second battery receives handshake messages after filtering the previous N frames of handshake messages and replies handshake messages to the charger, the charger sends charge messages to the second battery at fixed time after receiving the reply handshake messages of the second battery, the second battery opens the charging mos, and the charger charges the second battery.
In one embodiment of the present invention, the first battery or the second battery must receive the handshake message of the charger and reply the handshake message to the charger before charging.
In one embodiment of the present invention, at least the first 3 frames of handshake messages are filtered after the second battery receives the handshake messages of the charger.
In order to solve the above technical problems, the present invention provides a charging system for an electric bicycle, comprising:
A first charging module: when the first battery and the second battery of the electric boosting bicycle are required to be charged, the charger sends handshake messages to the first battery and the second battery at the same time, and the first battery and the second battery can both receive the handshake messages sent by the charger;
When the first battery receives the handshake message, the first battery immediately replies the handshake message to the charger, and after receiving the reply handshake message of the first battery, the charger sends a charging message to the first battery at regular time, the first battery opens a charging mos, and the charger charges the first battery; meanwhile, after the second battery receives the handshake message, the first N frames of handshake messages are filtered, at the moment, the charger is opposite to the first battery to charge, when the second battery waits for the first battery to charge, the handshake message of the charger is not received, the second battery does not open a charging mos, and charging is not carried out;
When the first battery is fully charged, the first battery is closed to charge mos, at the moment, the charger cannot recognize the battery voltage, then the charger resets and sends handshake messages to the first battery and the second battery at the same time at fixed time, the first battery is not replied after being fully charged, the second battery receives handshake messages after filtering the previous N frames of handshake messages and replies handshake messages to the charger, the charger sends charge messages to the second battery at fixed time after receiving the reply handshake messages of the second battery, the second battery opens the charging mos, and the charger charges the second battery.
In order to solve the technical problems, the invention provides an electric bicycle, and the charging system for the electric bicycle is adopted.
In order to solve the technical problems, the invention provides a charging method for an electric bicycle, which comprises the following steps: when a first battery of the electric boosting bicycle is charged firstly and then connected into the battery for charging, the second battery recognizes a handshake message sent by a charger and then filters a front N frames of handshake messages firstly, after the filtering is finished, the second battery receives the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the second battery after receiving the handshake message replied by the second battery, the second battery opens a charging mos, and the charger charges the second battery; when the first battery is connected in the charging process of the second battery, the charger only sends a charging message at the moment and does not send a handshake message, the first battery cannot be charged, but the first battery recognizes that UART communication between the charger and the charging of the second battery has high level, the first battery judges that the second battery is being charged, then the first battery sends a command to the second battery through CAN communication, the second battery exits from a charging state, the charging mos is closed, at the moment, the charger cannot recognize the battery voltage, the charger resets, and the handshake message is sent to the first battery and the second battery at the same time, and the charging of the first battery and the second battery is realized.
In one embodiment of the present invention, the first battery or the second battery must receive the handshake message of the charger and reply the handshake message to the charger before charging.
In one embodiment of the present invention, at least the first 3 frames of handshake messages are filtered after the second battery receives the handshake messages of the charger.
In order to solve the above technical problems, the present invention provides a charging system for an electric bicycle, comprising:
And a second charging module: the method comprises the steps that when a first battery is connected into a power-assisted bicycle for charging, the first battery recognizes a handshake message sent by a charger and then filters a front N frame handshake message, after filtering is finished, the second battery receives the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the second battery after receiving the handshake message replied by the second battery, the second battery opens a charging mos, and the charger charges the second battery; when the first battery is connected in the charging process of the second battery, the charger only sends a charging message at the moment and does not send a handshake message, the first battery cannot be charged, but the first battery recognizes that UART communication between the charger and the charging of the second battery has high level, the first battery judges that the second battery is being charged, then the first battery sends a command to the second battery through CAN communication, the second battery exits from a charging state, the charging mos is closed, at the moment, the charger cannot recognize the battery voltage, the charger resets, and the handshake message is sent to the first battery and the second battery at the same time, and the charging of the first battery and the second battery is realized.
In order to solve the technical problems, the invention provides an electric bicycle, which adopts the charging system for the electric bicycle.
Compared with the prior art, the technical scheme of the invention has the following advantages:
The invention comprises four charging methods: the method comprises the steps of respectively charging a main battery independently, charging the main battery and a secondary battery independently, charging the secondary battery firstly, and then connecting the main battery to the secondary battery for charging; the charger effectively realizes the charging of two groups of batteries (namely one charge and two charges) through one output;
The communication mode between the charger and the master battery/slave battery is UART communication, and the UART communication control mode is simple and can effectively lower the cost;
The charging mode of the invention for two groups of batteries is one output, and the main battery is charged preferentially under the condition that the main battery and the auxiliary battery are charged; even if the secondary battery is charged first, the secondary battery can be stopped from being charged after the primary battery is connected in, so that the primary battery is charged first.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
FIG. 1 is a flow chart of a method for separately charging a main battery according to the present invention;
FIG. 2 is a flow chart of a method for charging both a master battery and a slave battery according to the present invention;
Fig. 3 is a flow chart of a method for charging a secondary battery and then connecting the primary battery to charge according to the invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
The invention relates to a charging method for an electric bicycle, which comprises the steps of setting two groups of batteries in the electric bicycle as a main battery (namely a first battery) and a secondary battery (namely a second battery), firstly sending a handshake message (for example, 0 xaa) to the batteries when the charger is charged, replying the handshake message to the charger by the batteries, stopping sending the handshake message after the charger receives the handshake message replied by the batteries, switching to sending a charging message (for example, 0 xbb) to the batteries at regular time, and charging the batteries after receiving the charging message sent by the charger, wherein the charging modes comprise four types, namely (1) a single charging method of the main battery; (2) charging the master battery and the slave battery; (3) a method of charging from the battery alone; (4) The secondary battery is charged first, and the main battery is connected to the charging method.
It should be noted that, in this embodiment, the communication mode between the charger and the battery (including the master battery and the slave battery) is UART communication, that is, the transmitting and receiving of various messages between the charger and the battery (including the master battery and the slave battery) is based on UART communication. In addition, CAN communication is adopted between the master battery and the slave battery.
Further, the communication policy of charging the main battery is: when receiving the handshake message of the charger, replying to the charger immediately; the communication strategy of charging from the battery is: when the handshake message of the charger is received, the handshake message of the previous N frames is filtered, and the charger is replied after the filtering is finished.
Further, the master battery or the slave battery must receive the handshake message of the charger and reply the handshake message to the charger before charging.
Further, the communication strategy of charging from the battery is: when the handshake message of the charger is received, at least the first 3 frames of handshake messages are filtered.
Example 1
(1) Main battery independent charging method
Referring to fig. 1, the method for separately charging the main battery includes: the charger sends a handshake message to the main battery, the main battery recognizes the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the main battery after receiving the handshake message replied by the main battery, the main battery turns on a charging mos (which is equivalent to a mos switch, which is turned on when charging is needed, and is turned off when charging is not needed), and the charger charges the main battery.
The present embodiment also provides a charging system for an electric bicycle, comprising:
First individual charging module: the charger sends a handshake message to the main battery, the main battery recognizes the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the main battery after receiving the handshake message replied by the main battery, the main battery opens a charging mos, and the charger charges the main battery.
Example two
(2) Method for charging both master battery and slave battery
Referring to fig. 2, the method for charging the master battery and the slave battery includes: the charger sends handshake messages to the main battery and the slave battery simultaneously, at the moment, the main battery and the slave battery can both receive the handshake messages sent by the charger, the main battery replies the handshake messages to the charger immediately after receiving the handshake messages, the charger sends charging messages to the main battery at regular time after receiving the reply handshake messages of the main battery, the main battery opens charging mos, and the charger charges the main battery;
the slave battery can filter the handshake message of the previous N frames, so that the handshake message of the charger can not be received when the slave battery waits for the charging of the main battery, the slave battery does not open the charging mos, and the charging is not carried out;
When the main battery is fully charged, the charging mos is closed, and at the moment, the charger cannot recognize the battery voltage, then the charger resets and sends handshake messages to the main battery and the secondary battery at the same time at fixed time, because the main battery is not replied after being fully charged, the secondary battery receives the handshake messages after filtering the previous N frames of handshake messages and replies the handshake messages to the charger, the charger sends charging messages to the secondary battery at fixed time after receiving the reply handshake messages of the secondary battery, the secondary battery opens the charging mos, and the charger charges the secondary battery.
The present embodiment also provides a charging system for an electric bicycle, comprising:
A first charging module: when the first battery and the second battery of the electric boosting bicycle are required to be charged, the charger sends handshake messages to the first battery and the second battery at the same time, and the first battery and the second battery can both receive the handshake messages sent by the charger;
When the first battery receives the handshake message, the first battery immediately replies the handshake message to the charger, and after receiving the reply handshake message of the first battery, the charger sends a charging message to the first battery at regular time, the first battery opens a charging mos, and the charger charges the first battery; meanwhile, after the second battery receives the handshake message, the first N frames of handshake messages are filtered, at the moment, the charger is opposite to the first battery to charge, when the second battery waits for the first battery to charge, the handshake message of the charger is not received, the second battery does not open a charging mos, and charging is not carried out;
When the first battery is fully charged, the first battery is closed to charge mos, at the moment, the charger cannot recognize the battery voltage, then the charger resets and sends handshake messages to the first battery and the second battery at the same time at fixed time, the first battery is not replied after being fully charged, the second battery receives handshake messages after filtering the previous N frames of handshake messages and replies handshake messages to the charger, the charger sends charge messages to the second battery at fixed time after receiving the reply handshake messages of the second battery, the second battery opens the charging mos, and the charger charges the second battery.
Example III
(3) Method for charging secondary battery individually
The slave battery individual charging method includes: the charger sends a handshake message to the slave battery, after the handshake message sent by the charger is identified by the slave battery, the handshake message of the previous N frames is filtered, after the filtering is finished, the handshake message sent by the charger is identified by the slave battery, the handshake message is replied to the charger, after receiving the handshake message replied by the slave battery, the charger sends a charging message to the slave battery, the slave battery opens a charging mos, and the charger charges the slave battery. Specific charging process of the slave battery can also refer to fig. 1, and the difference between charging of the slave battery and the master battery is that the handshake message of the previous N frames needs to be filtered.
The present embodiment also provides a charging system for an electric bicycle, comprising:
A second individual charging module: the method comprises the steps that a handshake message is sent to a slave battery by a charger, the handshake message sent from the battery to the charger is filtered, N frames of handshake messages are filtered before the handshake message is identified from the battery to the charger after filtering is finished, the handshake message sent from the battery to the charger is replied to the charger, a charging message is sent to the slave battery after the handshake message replied from the battery is received by the charger, a charging mos is opened from the battery, and the slave battery is charged by the charger.
Example IV
(4) Method for charging secondary battery firstly and charging main battery later
Referring to fig. 3, the method for charging the secondary battery first and then connecting the primary battery to the secondary battery comprises: filtering the handshake message of the previous N frames after the handshake message sent by the charger is identified from the battery, after filtering, identifying the handshake message sent by the charger from the battery, replying the handshake message to the charger, sending a charging message to the slave battery after the charger receives the handshake message replied from the battery, opening a charging mos from the battery, and charging the slave battery by the charger; and in the process of charging the slave battery, the master battery is connected, and because the charger only sends a charging message at the moment, does not send a handshake message, the master battery cannot be charged, but the master battery recognizes that the UART communication between the charger and the slave battery has a high level (because the slave battery is being charged, the UART communication (communication line) between the slave battery and the charger has a change of high and low levels, if the slave battery is not being charged, the slave battery has only a low level between the slave battery and the charger), and judges that the slave battery is being charged, the master battery sends a command to the slave battery through CAN communication, the slave battery is led to exit the charging state, the charging mos is closed, and at the moment, the charger cannot recognize the battery voltage, the charger resets, resends the handshake message, and transfers the charging method to both the master battery and the slave battery in the first embodiment.
The embodiment also provides a charging system for an electric bicycle, which is characterized in that: comprising the following steps:
And a second charging module: when the main battery is connected to the auxiliary battery for charging, the auxiliary battery recognizes the handshake message sent by the charger and then filters the handshake message of the previous N frames, after the filtering is finished, the auxiliary battery receives the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the auxiliary battery after receiving the handshake message replied by the auxiliary battery, the auxiliary battery opens the charging mos, and the charger charges the auxiliary battery; when the secondary battery is charged, the main battery is connected, and the charger only sends a charging message at the moment and does not send a handshake message, so that the main battery cannot be charged, but the main battery recognizes that UART communication between the charger and the secondary battery is high level, and judges that the secondary battery is being charged, the main battery sends a command to the secondary battery through CAN communication, so that the secondary battery exits from a charging state, the charging mos is closed, the charger recognizes that the battery voltage is not available, the charger resets, and sends handshake messages to the main battery and the secondary battery at the same time, and the charging of the main battery and the secondary battery is realized (which is equivalent to implementing a charging method of the main battery and the secondary battery).
The present embodiment also provides an electric bicycle employing the charging system for an electric bicycle as described in any one of embodiments one to four.
In summary, the implementation of the present invention can realize one or two of the following technologies:
(1) The embodiment utilizes a charger reset mechanism to realize the charging of two groups of batteries.
(2) Setting a master battery and a slave battery, sending a handshake message when the charger charges, stopping sending the handshake message after receiving the handshake message replied by the battery, and converting to sending a charging message at regular time (the communication strategy is that the handshake message of the charger is replied immediately when the master battery is charged, and the communication strategy is that the handshake message of the previous N frames is filtered when the slave battery is charged.
(3) The charger can reset when the voltage of the battery pack is not recognized, and a handshake message is sent regularly.
(4) After the main battery is fully charged, the message sent by the charger is not replied.
(5) The master battery may control the slave battery.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. A charging method for an electrically assisted bicycle, characterized by: comprising the following steps: when the first battery and the second battery of the electric boosting bicycle are required to be charged, the charger simultaneously sends a handshake message to the first battery and the second battery, and the first battery and the second battery can both receive the handshake message sent by the charger;
When the first battery receives the handshake message, the first battery immediately replies the handshake message to the charger, and after receiving the reply handshake message of the first battery, the charger sends a charging message to the first battery at regular time, the first battery opens a charging mos, and the charger charges the first battery; meanwhile, after the second battery receives the handshake message, the first N frames of handshake messages are filtered, at the moment, the charger is opposite to the first battery to charge, when the second battery waits for the first battery to charge, the handshake message of the charger is not received, the second battery does not open a charging mos, and charging is not carried out;
When the first battery is fully charged, the first battery is closed to charge mos, at the moment, the charger cannot recognize the battery voltage, then the charger resets and sends handshake messages to the first battery and the second battery at the same time at fixed time, the first battery is not replied after being fully charged, the second battery receives handshake messages after filtering the previous N frames of handshake messages and replies handshake messages to the charger, the charger sends charge messages to the second battery at fixed time after receiving the reply handshake messages of the second battery, the second battery opens the charging mos, and the charger charges the second battery.
2. The charging method for an electric bicycle according to claim 1, characterized in that: the first battery or the second battery must receive the handshake message of the charger and reply the handshake message to the charger before charging.
3. The charging method for an electric bicycle according to claim 1, characterized in that: when the second battery receives the handshake message of the charger, at least the first 3 frames of handshake messages are filtered.
4. A charging system for an electric bicycle, characterized by: comprising the following steps:
A first charging module: when the first battery and the second battery of the electric boosting bicycle are required to be charged, the charger sends handshake messages to the first battery and the second battery at the same time, and the first battery and the second battery can both receive the handshake messages sent by the charger;
When the first battery receives the handshake message, the first battery immediately replies the handshake message to the charger, and after receiving the reply handshake message of the first battery, the charger sends a charging message to the first battery at regular time, the first battery opens a charging mos, and the charger charges the first battery; meanwhile, after the second battery receives the handshake message, the first N frames of handshake messages are filtered, at the moment, the charger is opposite to the first battery to charge, when the second battery waits for the first battery to charge, the handshake message of the charger is not received, the second battery does not open a charging mos, and charging is not carried out;
When the first battery is fully charged, the first battery is closed to charge mos, at the moment, the charger cannot recognize the battery voltage, then the charger resets and sends handshake messages to the first battery and the second battery at the same time at fixed time, the first battery is not replied after being fully charged, the second battery receives handshake messages after filtering the previous N frames of handshake messages and replies handshake messages to the charger, the charger sends charge messages to the second battery at fixed time after receiving the reply handshake messages of the second battery, the second battery opens the charging mos, and the charger charges the second battery.
5. An electric bicycle employing the charging system for an electric bicycle as claimed in claim 4.
6. A charging method for an electrically assisted bicycle, characterized by: comprising the following steps: when a first battery of the electric boosting bicycle is charged firstly and then connected into the battery for charging, the second battery recognizes a handshake message sent by a charger and then filters a front N frames of handshake messages firstly, after the filtering is finished, the second battery receives the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the second battery after receiving the handshake message replied by the second battery, the second battery opens a charging mos, and the charger charges the second battery; when the first battery is connected in the charging process of the second battery, the charger only sends a charging message at the moment and does not send a handshake message, the first battery cannot be charged, but the first battery recognizes that UART communication between the charger and the charging of the second battery has high level, the first battery judges that the second battery is being charged, then the first battery sends a command to the second battery through CAN communication, the second battery exits from a charging state, the charging mos is closed, at the moment, the charger cannot recognize the battery voltage, the charger resets, and the handshake message is sent to the first battery and the second battery at the same time, and the charging of the first battery and the second battery is realized.
7. The charging method for an electric bicycle of claim 6, wherein: the first battery or the second battery must receive the handshake message of the charger and reply the handshake message to the charger before charging.
8. The charging method for an electric bicycle of claim 6, wherein: when the second battery receives the handshake message of the charger, at least the first 3 frames of handshake messages are filtered.
9. A charging system for an electric bicycle, characterized by: comprising the following steps:
And a second charging module: the method comprises the steps that when a first battery is connected into a power-assisted bicycle for charging, the first battery recognizes a handshake message sent by a charger and then filters a front N frame handshake message, after filtering is finished, the second battery receives the handshake message sent by the charger and replies the handshake message to the charger, the charger sends a charging message to the second battery after receiving the handshake message replied by the second battery, the second battery opens a charging mos, and the charger charges the second battery; when the first battery is connected in the charging process of the second battery, the charger only sends a charging message at the moment and does not send a handshake message, the first battery cannot be charged, but the first battery recognizes that UART communication between the charger and the charging of the second battery has high level, the first battery judges that the second battery is being charged, then the first battery sends a command to the second battery through CAN communication, the second battery exits from a charging state, the charging mos is closed, at the moment, the charger cannot recognize the battery voltage, the charger resets, and the handshake message is sent to the first battery and the second battery at the same time, and the charging of the first battery and the second battery is realized.
10. An electric bicycle employing the charging system for an electric bicycle as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410482812.8A CN118219905A (en) | 2024-04-22 | 2024-04-22 | Charging method and system for electric bicycle and electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410482812.8A CN118219905A (en) | 2024-04-22 | 2024-04-22 | Charging method and system for electric bicycle and electric bicycle |
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| CN118219905A true CN118219905A (en) | 2024-06-21 |
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| CN202410482812.8A Pending CN118219905A (en) | 2024-04-22 | 2024-04-22 | Charging method and system for electric bicycle and electric bicycle |
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- 2024-04-22 CN CN202410482812.8A patent/CN118219905A/en active Pending
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