CN221652277U - A digital parallel lithium battery charging device - Google Patents

Abstract

The utility model discloses a digital parallel lithium battery charging device, including an input unit, a plurality of charging modules, an output unit and a communication module; wherein the input unit is configured to be connected to an external power source through an input port, and its output end is electrically connected to the input end of the charging module; a plurality of the charging modules are connected in parallel, the input end of each charging module is electrically connected to the output end of the input unit, and the input end of each charging module is electrically connected to the input end of the output unit; the output end of the output unit is configured to be connected to a load through an output port; each charging module includes a digital chip, and the digital chip is configured to control the output power of the circuit of the charging module; the digital chip of each charging module is bidirectionally connected to the communication module. The utility model has high reliability, low development cost and is easy to realize power expansion.

Description

A digital parallel lithium battery charging device

Technical Field

The utility model relates to the technical field of batteries, in particular to a digital parallel lithium battery charging device.

Background Art

Traditional charging equipment mostly uses analog chips, which cannot be connected in parallel or flexibly expanded. Analog chips rely on hardware circuits and it is difficult to implement complex algorithms, which makes it difficult to optimize the size of the charging equipment. Especially when multiple charging modules need to be connected in parallel, the voltage and current equalization circuits are extremely complex, and the failure rate is also very high due to the large number of components.

The parallel connection of multiple charging modules of traditional charging equipment is shown in Figure 1. Its input unit transmits energy to three charging modules, A, B and C, respectively. Each charging module uses an analog chip. A and B are output to the output unit through the parallel circuit AB, B and C are output to the output unit through the parallel circuit BC, and A and C are output to the output unit through the parallel circuit AC. If any of the three charging modules, A, B and C, cannot work normally or is abnormal, the entire charging device will be unable to output.

In addition, the existing charging equipment needs to redesign the corresponding circuit every time the power changes, which puts a lot of work on the designers and requires high time, design and production costs.

The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application, nor does it necessarily provide technical guidance. In the absence of clear evidence that the above content has been disclosed before the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application.

Utility Model Content

The utility model aims to provide a digital parallel lithium battery charging device, which has high reliability, low development cost and is easy to realize power expansion.

In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

A digital parallel lithium battery charging device comprises an input unit, a plurality of charging modules, an output unit and a communication module; wherein the input unit is configured to be connected to an external power source through an input port, and its output end is electrically connected to the input end of the charging module;

A plurality of charging modules are connected in parallel, and the input end of each charging module is electrically connected to the output end of the input unit, and the input end of each charging module is electrically connected to the input end of the output unit;

The output end of the output unit is configured to be connected to a load through an output port;

Each of the charging modules includes a digital chip configured to control the output power of the circuit of the charging module;

The digital chip of each charging module is connected to the communication module for bidirectional communication.

Further, based on any one of the above-mentioned technical solutions or a combination of multiple technical solutions, the charging module at least includes a first charging module, a second charging module and a third charging module connected in parallel;

The first charging module includes a first digital chip;

The second charging module includes a second digital chip;

The third charging module includes a third digital chip;

The first digital chip, the second digital chip and the third digital chip are all connected to the communication module for bidirectional communication.

Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, the model of the digital chip is TMS320F28034PNT.

Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, it also includes a detection device corresponding one-to-one to the multiple charging modules, and the input end of the detection device is electrically connected to the output end of the charging module; the detection device is configured to detect one or more of the output current, output voltage and output power of the charging module.

Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, it also includes a detection device, which includes multiple detection input terminals, and an output terminal of one of the charging modules is configured to be electrically connected to a detection input terminal of the detection device; the detection device is configured to detect the output current, output voltage and output power of each of the charging modules.

Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions described above, the input end of the detection device is also configured to be electrically connected to the input end of the output unit, and is configured to detect the output current, output voltage and output power of the output unit.

Furthermore, any one of the technical solutions or a combination of multiple technical solutions described above also includes a display device, which is electrically connected to the output end of the detection device and is configured to display the output current, output voltage and output power of the output unit and the output current, output voltage and output power of the charging module.

Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, a software program is pre-stored in the digital chip.

Furthermore, based on any one of the technical solutions or a combination of multiple technical solutions mentioned above, the digital chip is also configured with an input interface, and the input interface is configured to input a software program.

Furthermore, any one of the technical solutions or a combination of multiple technical solutions described above also includes an input device, the input device includes a touch display screen and/or buttons, and the digital chip is also configured to be electrically connected to the input device through an input port.

The beneficial effects brought by the technical solution provided by the utility model are as follows:

The digital parallel lithium battery charging device provided by the utility model has multiple charging modules connected in parallel. When one circuit fails, other circuits can work normally, which can improve its reliability, reduce the failure rate of the charging device, and facilitate the expansion of the output power of the charging device. Each charging module adopts a digital chip, and the power of the charging module can be quickly and conveniently changed through the digital chip, thereby realizing low-cost and efficient change of the power of the charging device.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a working principle diagram of a lithium battery charging device in the prior art;

FIG. 2 is a working principle diagram of a digital parallel lithium battery charging device provided by an exemplary embodiment of the present utility model.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, device, product or equipment that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

In one embodiment of the utility model, a digital parallel lithium battery charging device is provided, which is applied to a high-power lithium battery charging device for two-wheeled vehicles, as shown in FIG2 , and includes an input unit, a plurality of charging modules, an output unit and a communication module. The input unit is configured to be connected to an external power source through an input port, and its output end is electrically connected to the input end of the charging module;

A plurality of charging modules are connected in parallel, and the input end of each charging module is electrically connected to the output end of the input unit, and the input end of each charging module is electrically connected to the input end of the output unit;

The output end of the output unit is configured to be connected to a load through an output port;

Each of the charging modules includes a digital chip configured to control the output power of the circuit of the charging module;

The digital chip of each charging module is bidirectionally connected to the communication module, so that communication between multiple digital chips can be achieved.

The model of the digital chip is preferably TMS320F28034PNT. The digital chip has a pre-stored software program. In actual use, the digital chip can be implanted with different programs according to different application occasions to quickly realize the design of power capacity increase, thereby shortening the product development time and cost. The digital chip is also configured with an input interface, and the input interface is configured to input the software program.

In one embodiment of the present utility model, the digital parallel lithium battery charging device also includes a detection device, a display device and an input device.

Wherein, the detection device includes a plurality of detection input terminals, and the output terminal of one of the charging modules is configured to be electrically connected to a detection input terminal of the detection device; the detection device is configured to detect the output current, output voltage and output power of each of the charging modules. The input terminal of the detection device is also configured to be electrically connected to the input terminal of the output unit, and is configured to detect the output current, output voltage and output power of the output unit. In another embodiment, there are multiple detection devices, and the output terminal of one of the charging modules is electrically connected to the input terminal of a detection device, and the output terminal of the output unit is also electrically connected to the input terminal of an independent detection device. The output unit and each of the charging modules are configured to detect their output current, output voltage and output power through an independent detection device. This can improve the reliability of detection and reduce the detection failure rate.

The display device is electrically connected to the output end of the detection device, and is configured to display the output current, output voltage and output power of the output unit and the output current, output voltage and output power of the charging module.

The input device includes a touch screen and/or a key. The digital chip is configured to be electrically connected to the output end of the input device through an input port. Through the input device, the digital chip can be controlled to be turned on or off or in operation.

Each charging module in the digital parallel lithium battery charging device provided by the utility model is independent, and the failure of one module does not affect the normal operation of other modules, so the failure rate of the charging device can be reduced. In addition, the power expansion of the charging device can be conveniently realized.

For example, in a specific embodiment of the present invention, the charging module at least includes a first charging module, a second charging module and a third charging module connected in parallel. The first charging module includes a first digital chip; the second charging module includes a second digital chip; the third charging module includes a third digital chip. The first digital chip, the second digital chip and the third digital chip are all connected to the communication module for bidirectional communication. The power expansion of the charging device can be achieved by connecting a fourth charging module, a fifth charging module and the like in parallel. The digital parallel lithium battery charging device provided by the present invention meets the development needs of miniaturization and rapid power scalability of high-power lithium battery charging equipment for two-wheeled vehicles.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims (10)

1. A digital parallel lithium battery charging device, characterized in that it comprises an input unit, a plurality of charging modules, an output unit and a communication module; wherein the input unit is configured to be connected to an external power source through an input port, and its output end is electrically connected to the input end of the charging module; A plurality of charging modules are connected in parallel, and the input end of each charging module is electrically connected to the output end of the input unit, and the input end of each charging module is electrically connected to the input end of the output unit; The output end of the output unit is configured to be connected to a load through an output port; Each of the charging modules includes a digital chip configured to control the output power of the circuit of the charging module; The digital chip of each charging module is connected to the communication module for bidirectional communication. 2. The digital parallel lithium battery charging device according to claim 1, characterized in that the charging module at least comprises a first charging module, a second charging module and a third charging module connected in parallel; The first charging module includes a first digital chip; The second charging module includes a second digital chip; The third charging module includes a third digital chip; The first digital chip, the second digital chip and the third digital chip are all connected to the communication module for bidirectional communication. 3. The digital parallel lithium battery charging device according to claim 1, characterized in that the model of the digital chip is TMS320F28034PNT. 4. The digital parallel lithium battery charging device according to claim 1 is characterized in that it also includes a detection device corresponding to the multiple charging modules one by one, and the input end of the detection device is electrically connected to the output end of the charging module; the detection device is configured to detect one or more of the output current, output voltage and output power of the charging module. 5. The digital parallel lithium battery charging device according to claim 1 is characterized in that it also includes a detection device, which includes multiple detection input terminals, and the output terminal of one of the charging modules is configured to be electrically connected to a detection input terminal of the detection device; the detection device is configured to detect the output current, output voltage and output power of each of the charging modules. 6. The digital parallel lithium battery charging device according to claim 5 is characterized in that the input end of the detection device is also configured to be electrically connected to the input end of the output unit, and is configured to detect the output current, output voltage and output power of the output unit. 7. The digital parallel lithium battery charging device according to claim 6 is characterized in that it also includes a display device, which is electrically connected to the output end of the detection device and is configured to display the output current, output voltage and output power of the output unit and the output current, output voltage and output power of the charging module. 8. The digital parallel lithium battery charging device according to claim 1, characterized in that a software program is pre-stored in the digital chip. 9. The digital parallel lithium battery charging device according to claim 1 is characterized in that the digital chip is also configured with an input interface, and the input interface is configured to input a software program. 10. The digital parallel lithium battery charging device according to claim 1 is characterized in that it also includes an input device, the input device includes a touch screen and/or a button, and the digital chip is also configured to be electrically connected to the input device through an input port.