Power divider for two-wheeled and three-wheeled vehicles

Abstract

The utility model discloses a power divider for two-wheeled and three-wheeled vehicles, which comprises a battery pack used for storing electric quantity and supplying power. The Mos tube module is connected with the battery pack in series, and the Mos tube module is used for on-off control of a battery pack circuit to realize on-off of a power supply; the load module is electrically connected with the plurality of distributed battery packs; and the MCU module is used for monitoring and controlling the circuit. According to the utility model, through the high-speed switching of the MOS tubes of the power divider, the combined use of the multiple battery packs is realized, the endurance and the output power are increased, the intelligent power distribution of the multiple battery packs can be realized on the premise of not changing other electrical architectures of a vehicle and not proposing extra requirements on the battery pack BMS, and the requirements of the endurance and the power output of the vehicle are met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement for two-wheeled and three-wheeled electric vehicles, in particular to a power distributor for two-wheeled and three-wheeled vehicles. Background Art

[0002] In the battery replacement application of two-wheeled and three-wheeled electric vehicles, the replaceable battery pack must not be too heavy. Therefore, in order to meet the requirements of battery life and power output, two, three or even more battery packs are combined and placed in a vehicle in series or in parallel. However, each battery pack may have different residual capacity and voltage during the charging and discharging process, and the capacity cannot be increased by direct parallel connection, especially for lithium battery packs. Direct parallel connection will cause current to flow back from the high-voltage battery pack to the low-voltage battery pack, thereby burning the battery pack circuit or battery cell.

[0003] For the structure that uses multiple battery packs in series, since the voltage increases exponentially, other electrical appliances in the vehicle need to be adjusted accordingly. In addition, this method requires the use of the capacity of the entire battery and cannot work with a single battery pack. This will also bring a burden to the battery swap station, as all battery packs need to be replaced at the same time.

[0004] For the parallel structure mentioned above, the design and interface of the BMS need to be replaced / modified. For existing vehicles, the battery pack of the dedicated BMS needs to be replaced. The battery pack accounts for a high proportion of the cost of the whole vehicle. It is difficult to promote the replacement of the battery pack in the existing market. Manual switching is a very primitive method, which requires stopping the vehicle to operate, which is very inconvenient. Utility Model Content

[0005] Therefore, the purpose of the utility model is to provide a power distributor for two-wheeled and three-wheeled vehicles. Through the high-speed switching of the MOS tube of the power distributor, multiple battery packs can be used together to increase the battery life and output power. Without changing the other electrical architecture of the vehicle and without making additional requirements on the battery pack BMS, intelligent power distribution of multiple battery packs can be achieved to meet the needs of vehicle battery life and power output.

[0006] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solution: a power distributor for two-wheeled and three-wheeled vehicles, comprising:

[0007] A battery pack, wherein the battery pack is used for storing electricity and supplying power;

[0008] MOS tube module, the MOS tube module and the battery pack are connected in series, and the MOS tube module is used for on-off control of the battery pack circuit to realize the switching of the power supply;

[0009] A load module, the load module being electrically connected to a plurality of distributed battery packs;

[0010] MCU module, the MCU module is used for monitoring and controlling the circuit.

[0011] As a preferred solution of a power distributor for two-wheeled and three-wheeled vehicles described in the utility model, there are several battery packs, and each battery pack is connected in series with a corresponding MOS tube module.

[0012] As a preferred solution of a power distributor for two-wheeled and three-wheeled vehicles described in the utility model, a plurality of distributed battery packs are combined together and connected to a load module.

[0013] As a preferred solution of a power distributor for two-wheeled and three-wheeled vehicles described in the utility model, the MCU module is connected and communicated with several distributed battery packs through data lines to obtain the voltage of each connected battery pack.

[0014] As a preferred solution of the power distributor for two-wheeled and three-wheeled vehicles described in the utility model, the data line is CAN or 485.

[0015] As a preferred solution of a power distributor for two-wheeled and three-wheeled vehicles described in the utility model, each distributed battery pack is connected to the power distributor, and the MCU module is integrated on the power distributor.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The original battery pack can be used without the need for a dedicated BMS. The battery life can be increased simply by increasing the number of battery packs. Battery packs in different states can be used simultaneously, including replacing one of the battery packs when swapping batteries. Multiple battery packs with different voltages and remaining capacities can also be used normally on a vehicle. It also supports the situation where the vehicle's battery pack is not fully equipped, such as two of three battery packs or one of two battery packs. The vehicle can be used normally, and the power distributor can be used to distribute the power of multiple battery packs to increase the current output, so as to achieve the purpose of increasing torque and speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a principle block diagram of the utility model.

[0020] In the figure: 1. Battery pack; 2. MOS tube module; 3. Load module; 4. MCU module. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides a power distributor for two-wheeled and three-wheeled vehicles, which can use the original battery pack without the need for a dedicated BMS. The battery life can be increased simply by increasing the number of battery packs, and battery packs in different states can be used simultaneously, including replacing one of the battery packs when changing the battery. Even if multiple battery packs have different voltages and different remaining capacities, they can still be used normally on a vehicle. It also supports the situation where the battery pack of the vehicle is not fully equipped, such as two of three battery packs and one of two battery packs. The vehicle can be used normally, and the power of multiple battery packs can be distributed through the power distributor to increase the current output, so as to achieve the purpose of increasing torque and increasing vehicle speed.

[0026] Figure 1 The utility model is a schematic diagram of the overall structure of a power distributor for two-wheeled and three-wheeled vehicles. Figure 1 , the main structure of this implementation includes:

[0027] Battery pack 1, which is used to store electricity and supply power. There are several battery packs 1, and each battery pack 1 is connected in series with a corresponding MOS tube module 2;

[0028] MOS tube module 2, MOS tube module 2 and battery pack 1 are connected in series, and MOS tube module 2 is used for on-off control of the circuit of battery pack 1 to realize the switch of power supply;

[0029] A load module 3, the load module 3 is electrically connected to a plurality of distributed battery packs 1;

[0030] MCU module 4, MCU module 4 is used for monitoring and controlling the circuit;

[0031] In specific use, in the low-speed switching state, the multiple battery packs 1 are switched at a time interval of more than seconds. The switched battery pack 1 supplies power to the load module 3, and the other battery packs 1 are in an idle state. At this time, the current battery pack 1 is used slowly, the voltage is relatively high, or it is in a light load situation. The power of the battery pack 1 with a higher capacity is used first, and the capacity of the current battery pack 1 is reduced after being used for a period of time, and then it is switched to other battery packs 1 with higher capacity;

[0032] In the high-speed switching state, the multiple battery packs 1 are quickly switched at a rate higher than 1Hz, so that each battery pack 1 is turned on to output power in a certain time slice, so the power of the load module 3 is distributed to each battery pack 1, and each battery pack 1 can be assigned different duty cycle time slices to distribute different proportions of loads. The battery pack 1 with a high SOC can be assigned more time slices to share more output energy. The advantage of this is that when the vehicle needs a larger current when climbing a slope or driving at high speed, the load can be shared by multiple battery packs 1, so that one battery pack 1 will not exceed the rated current and be protected. Even if the voltages and SOCs of the battery packs 1 used at the same time are different, because the power distributor only turns on one MOS tube module 2 at the same time, there will be no problems such as current backflow;

[0033] When the MCU module 4 detects that the voltage of the battery pack 1 is close to the SOC, it can also control multiple battery packs 1 that meet the conditions to directly output in parallel to drive the load module 3. This can be used when the battery pack capacity is low and the load capacity becomes weak. The MCU module 4 on the power distributor can monitor how many battery packs 1 are connected to the vehicle and the status of each battery pack 1. For the protection of the battery pack 1, a threshold can also be set. When the SOC of a battery pack 1 is lower than the set value, the battery pack 1 will exit the power supply and wait for battery replacement / charging. This allows the vehicle to be used normally when there is a lack of battery or the battery is replaced midway.

[0034] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A power distributor for two-wheeled and three-wheeled vehicles, characterized in that: include: A battery pack (1), the battery pack (1) being used for storing electricity and supplying power; A MOS tube module (2), wherein the MOS tube module (2) and the battery pack (1) are connected in series, and the MOS tube module (2) is used for on / off control of the battery pack (1) circuit to realize the switching of the power supply; A load module (3), the load module (3) being electrically connected to a plurality of distributed battery packs (1); An MCU module (4), wherein the MCU module (4) is used for monitoring and controlling the circuit.

2. A power distributor for two-wheeled and three-wheeled vehicles according to claim 1, characterized in that: A plurality of battery packs (1) are provided, and a corresponding MOS tube module (2) is connected in series at the position of each battery pack (1).

3. A power distributor for two-wheeled and three-wheeled vehicles according to claim 2, characterized in that: A plurality of distributed battery packs (1) are combined together and connected to a load module (3).

4. A power distributor for two-wheeled and three-wheeled vehicles according to claim 3, characterized in that: The MCU module (4) is connected and communicated with a plurality of distributed battery packs (1) via data lines to obtain the voltage of each connected battery pack (1).

5. A power distributor for two-wheeled and three-wheeled vehicles according to claim 4, characterized in that: The data line is CAN or 485.

6. A power distributor for two-wheeled and three-wheeled vehicles according to claim 5, characterized in that: Each distributed battery pack (1) is connected to a power distributor, and an MCU module (4) is integrated on the power distributor.

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