CN214380259U - Lithium battery pack capable of automatically regulating voltage - Google Patents
Lithium battery pack capable of automatically regulating voltage Download PDFInfo
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- CN214380259U CN214380259U CN202023087428.4U CN202023087428U CN214380259U CN 214380259 U CN214380259 U CN 214380259U CN 202023087428 U CN202023087428 U CN 202023087428U CN 214380259 U CN214380259 U CN 214380259U
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Abstract
The utility model relates to a lithium cell technical field, concretely relates to but lithium cell group of automatic voltage regulation, including charging unit, lithium cell group, acquisition unit, MCU and pressure regulating unit, charging unit's input and mains connection, charging unit's output respectively with the input of lithium cell group and the input of pressure regulating unit is connected, acquisition unit's input respectively with the output of lithium cell group and the output of pressure regulating unit is connected, acquisition unit's output with MCU connects, MCU with the control end of pressure regulating unit is connected, the output and the load of pressure regulating unit are connected. The utility model discloses lithium cell group and regulator's integral structure is simpler, and the volume is littleer, can directly replace the heavy regulator of original DC power supply screen.
Description
Technical Field
The utility model relates to a battery technology field, concretely relates to but lithium cell group of automatic voltage regulation.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, m.s.whitetingham proposed and began to study lithium ion batteries. Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries.
When the commercial power charges through direct current power supply screen (cabinet) to lithium cell group, direct current power supply screen can be greater than 220V's DC voltage with 380/220V's AC voltage conversion and charges the lithium cell, can supply power to the load in resident's family or the market when charging, need 220V's direct current output this moment, because charging voltage is higher than the upper limit of receiving the electric load voltage, must adopt the step-down this moment, traditional method is to dispose one set of voltage regulation control circuit and step-down silicon chain (be voltage regulation device (SSM)) in the cabinet that charges, thereby obtain suitable voltage through the switching of analog control circuit control relay contact. This may cause additional installation of some devices, which is troublesome.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a but lithium cell group of automatic voltage regulation need not to increase extra device when charging lithium cell group to solve above difficult problem.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a but lithium cell group of automatic voltage regulation, includes charging unit, lithium cell group, acquisition unit, controller and voltage regulating unit, charging unit's input and mains connection, charging unit's output respectively with the input of lithium cell group and the input of voltage regulating unit is connected, acquisition unit's input respectively with the output of lithium cell group and the output of voltage regulating unit is connected, acquisition unit's output with the controller is connected, the controller with the control end of voltage regulating unit is connected, the output and the load of voltage regulating unit are connected.
Preferably, the charging unit is a direct-current power supply screen.
And preferably, the acquisition unit is used for acquiring the output voltage of the voltage regulating unit of the lithium battery pack.
And as optimization, the voltage regulating unit is a voltage reducing silicon chain, and the controller is connected with a relay of the voltage reducing silicon chain.
And preferably, the controller is an MCU.
The lithium battery pack capable of automatically regulating voltage has the following technical effects:
1. the acquisition unit, the controller and the voltage regulation unit are close to the lithium battery pack, so that voltage measurement errors are reduced;
2. the lithium battery pack and the voltage regulating device are simpler in integrated structure and smaller in size, and can directly replace the heavy voltage regulating device of the original direct-current power supply screen;
3. the voltage regulating instruction is directly from the controller, and the control precision is higher by adopting a digital technology.
Drawings
Fig. 1 is a schematic structural diagram of a lithium battery pack capable of automatically adjusting voltage according to the present invention;
fig. 2 is a schematic diagram of a connection circuit of the buck silicon chain.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to solve the technical problem, the utility model discloses a following technical scheme:
as shown in fig. 1-2, a lithium battery pack capable of automatically regulating voltage, including charging unit 1, lithium battery pack 2, acquisition unit 3, controller 4 and voltage regulating unit 5, lithium battery pack is established ties by a plurality of lithium battery electricity cores and constitutes, charging unit 1's input and mains connection, charging unit 1's output respectively with lithium battery pack 2's input and voltage regulating unit 3's input is connected, acquisition unit 3's input respectively with lithium battery pack 1's output and voltage regulating unit 5's output is connected, acquisition unit 3's output with controller 4 connects, controller 4 with voltage regulating unit 5's control end is connected, voltage regulating unit 5's output and load are connected.
The controller 4 is a Micro Controller Unit (MCU) with a small and exquisite structure, and the model is the STM32F103 series of the ST company, which can be selected according to specific requirements and will not be described herein.
The microcontroller is connected with the acquisition unit and the voltage regulation unit through a CAN line respectively.
In this embodiment, the charging unit 1 is a dc power supply panel.
In this embodiment, the collecting unit 3 is configured to collect the voltage of the lithium battery pack 2 and the output voltage of the voltage regulating unit 5.
In this embodiment, the voltage regulating unit 5 is a buck silicon chain, and the controller 4 is connected to a relay of the buck silicon chain.
When the voltage of the bus is higher than (lower than) the upper limit (lower limit) of the set value, the controller sends a signal to drive an execution relay, and the step-down value of the voltage-stabilizing silicon chain is changed by breaking or closing the execution relay, so that the bus voltage value is ensured to be in a specified range.
The connection mode of step-down silicon chain and dc power supply screen and controller is prior art, can refer to fig. 2, and fig. 2 is not the connection diagram of the utility model. The dc power supply panel is connected to the input (left end in fig. 2) of the buck silicon chain, and the controller is connected to the relay of the buck silicon chain to control the on/off of the contacts.
The principle of the utility model is that:
the commercial power supplies power to the direct current power supply screen, the direct current power supply screen converts 380/220V AC of commercial power into DC higher than 220V and charges the lithium cell group, the total voltage (the output voltage of direct current power supply screen) and the output voltage of voltage regulating unit (SSM in figure 1) of lithium cell group are gathered to the acquisition unit (SCU in figure 1), and give controller (MCU in figure 1) with two voltage data gathered, transmission mode is CAN line transmission, the controller carries out data analysis and processing, the on or off order of relay in the voltage regulating unit is assigned according to two voltage differences, control voltage regulating unit carries out corresponding step-down, export for the load at last, guarantee voltage regulating unit output voltage's stability. Of course, the collecting unit is not only a voltage collecting unit, but also can be set according to other required functions, for example, collecting the voltage of each electric core of the lithium battery and the temperature of each electric core, etc., which are the prior art, and meanwhile, this is not the scope to be protected in this patent, and is not described herein again.
The connection of the present invention is an electrical connection, and at the same time, the present invention relates to a specific implementation of an automatically voltage-adjustable lithium battery pack, which may involve a practical software, but the software used is the software most commonly used by those skilled in the art, and is not within the scope of the claims of the patent application.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.
Claims (5)
1. The utility model provides a but lithium cell group of automatic voltage regulation, its characterized in that, includes charging unit (1), lithium cell group (2), acquisition unit (3), controller (4) and voltage regulating unit (5), the input and the commercial power connection of charging unit (1), the output of charging unit (1) respectively with the input of lithium cell group (2) and the input of voltage regulating unit (5) is connected, the input of acquisition unit (3) respectively with the output of lithium cell group (2) and the output of voltage regulating unit (5) is connected, the output of acquisition unit (3) with controller (4) are connected, controller (4) with the control end of voltage regulating unit (5) is connected, the output and the load of voltage regulating unit (5) are connected.
2. The lithium battery pack capable of automatically regulating voltage according to claim 1, wherein the charging unit (1) is a direct current power supply panel.
3. The lithium battery pack capable of automatically regulating voltage according to claim 1, wherein the collecting unit (3) is used for collecting the voltage of the lithium battery pack (2) and the output voltage of the voltage regulating unit (5).
4. The lithium battery pack capable of automatically regulating voltage according to claim 1, wherein the voltage regulating unit (5) is a buck silicon chain, and the controller (4) is connected with a relay of the buck silicon chain.
5. The lithium battery pack capable of automatically regulating voltage according to claim 1, wherein the controller (4) is an MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023087428.4U CN214380259U (en) | 2020-12-20 | 2020-12-20 | Lithium battery pack capable of automatically regulating voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023087428.4U CN214380259U (en) | 2020-12-20 | 2020-12-20 | Lithium battery pack capable of automatically regulating voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214380259U true CN214380259U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023087428.4U Active CN214380259U (en) | 2020-12-20 | 2020-12-20 | Lithium battery pack capable of automatically regulating voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214380259U (en) |
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2020
- 2020-12-20 CN CN202023087428.4U patent/CN214380259U/en active Active
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