WO2016197413A1

WO2016197413A1 - Energy storage charging device and mobile charging device

Info

Publication number: WO2016197413A1
Application number: PCT/CN2015/082278
Authority: WO
Inventors: 温美婵; 周永力; 刘胥和
Original assignee: 深圳市华宝新能源股份有限公司
Priority date: 2015-06-11
Filing date: 2015-06-25
Publication date: 2016-12-15
Also published as: CN104901377A; CN104901377B

Abstract

An energy storage charging device. The device comprises: an energy storage apparatus (110) which comprises a plurality of energy storage sub-apparatuses (112) in cascading connection, wherein the energy storage sub-apparatus comprises a switch unit (114) and an energy storage unit (116), and the switch unit in the energy storage sub-apparatus is used for controlling an access state of the energy storage unit; a detection apparatus (120) which is used for being connected to a load and detecting power of the load; a processing apparatus (130) which is used for calculating the number of energy storage sub-apparatuses which are required to be accessed according to the power of the load when output power of the energy storage apparatus matches the power of the load, and outputting a processing result; and a control apparatus (140) which is used for generating a switch control signal according to the processing result to control a switch state of each switch unit so as to control the access state of each energy storage unit. The energy storage charging device can adjust output power according to power of a load, thereby enabling the output power of the energy storage charging device to match the power of the load, and improving charging efficiency.

Description

Energy storage charging device and mobile charging device

[Technical Field]

The present invention relates to the field of energy storage charging technologies, and in particular, to an energy storage charging device, and to a mobile charging device.

【Background technique】

As the core component of the mobile charging device, the energy storage charging device directly affects the charging efficiency of the mobile charging device. Mobile charging devices need to charge different loads (such as electric cars, etc.). The power requirements of different loads are different. The output power of the conventional energy storage charging device is constant, and the output power of the energy storage charging device does not match the load power, which affects the charging efficiency of the mobile charging device.

[Summary of the Invention]

Based on this, it is necessary to provide an energy storage charging device with higher charging efficiency.

An energy storage charging device for powering a load, including:

The energy storage device includes a plurality of energy storage sub-devices connected by a cascade manner; the energy storage sub-device includes a switch unit and an energy storage unit connected to the switch unit; and the switch unit in the energy storage sub-device Controlling the access status of the energy storage unit;

a detecting device for connecting to the load and detecting the load power;

a processing device, coupled to the detecting device, configured to calculate, according to the load power, an amount of energy storage sub-devices that need to be accessed when the output power of the energy storage device matches the load power, and output a processing result;

The control device is respectively connected to the processing device and the switch unit; the control device is configured to generate a switch control signal according to the processing result to control a switch state of each switch unit to control an access state of each energy storage unit.

A mobile charging device is also provided.

A mobile charging device includes a driving device for driving the mobile charging device to move, and further includes an energy storage charging device; the energy storage charging device is configured to supply power to the load, including:

a detecting device for connecting to the load and detecting the load power;

The above energy storage charging device and the mobile charging device can adjust the output power according to the load power, so that the output power of the energy storage charging device matches the load power, thereby improving the charging efficiency.

[Description of the Drawings]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain drawings of other embodiments according to the drawings without any creative work.

1 is a block diagram showing the structure of an energy storage charging device in an embodiment;

2 is a schematic structural view of an energy storage device in an energy storage charging device according to an embodiment;

3 is a schematic structural view of an energy storage device in an energy storage charging device in another embodiment;

4 is a structural block diagram of an energy storage charging device in another embodiment.

【detailed description】

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

An energy storage charging device for supplying power to a load. In this embodiment, the energy storage charging device is disposed in the mobile charging device for charging a load (such as an electric vehicle). In other embodiments, the above-described energy storage charging device can also be used in an environment such as a charging post or a home power supply. 1 is a block diagram showing the structure of an energy storage charging device in an embodiment, which includes an energy storage device 110, a detection device 120, a processing device 130, and a control device 140.

The energy storage device 110 is configured to store electrical energy to supply power to the connected load device. The energy storage device 110 includes a plurality of energy storage sub-devices 112 that are connected in a cascade manner. The selection of the specific cascading mode can be set according to the capacity of the energy storage device 110 and the power demand. Each of the energy storage sub-devices 112 is connected by a power line and a communication line. Each energy storage sub-device 112 includes a switch unit 114 and an energy storage unit 116 coupled to the switch unit 114. The switch unit 114 is configured to control an access state of the energy storage unit 116. The switch unit 114 may include a mechanical switch, such as a single-pole single-position switch; the switch unit 114 may also be a switch circuit composed of transistors. The energy storage unit 116 uses a commonly used battery. The energy storage unit 116 can be a single large capacity battery or a battery pack. In one embodiment, the energy storage sub-devices 112 in the energy storage device 110 are connected in series, as shown in FIG. In the present embodiment, the switching unit 114 and the energy storage unit 116 in the energy storage sub-device 112 are disposed in parallel. When the switch unit 114 is in the closed state, the control energy storage unit 116 is in an unconnected state. When the switch unit 114 is in the off state, the control energy storage unit 116 is in an access state. In other embodiments, the energy storage sub-devices 112 in the energy storage device 110 are connected in a parallel manner, as shown in FIG. In this embodiment, the switching unit 114 is disposed in series with the energy storage unit 116. When the switch unit 114 is in the closed state, the control energy storage unit 116 is in an access state. When the switch unit is in the off state, the energy storage unit 116 is controlled to be in an unconnected state.

The detecting device 120 is configured to be connected to the load, and detects the load power and outputs the detected load power to the processing device 130. Detection device 120 can be implemented by power detection circuitry as is known to those skilled in the art.

The processing device 130 is connected to the detecting device 120. The processing device 130 receives the load power output by the detecting device 120, and calculates the number of energy storage sub-devices 112 that need to be accessed in the energy storage device 110 when the output power of the energy storage device 110 matches the load power according to the load power, and The processing result including the number is output to the control device 140. When the energy storage charging device accesses a plurality of loads such that the load power is greater than the output power when all of the energy storage sub-devices 112 in the energy storage device 110 are connected, the processing device 130 will access the energy storage sub-device 112 that needs to be accessed. The number is set to the maximum value.

The control device 140 is connected to the processing device 130 for receiving the processing result output by the processing device 130. The control device 140 generates a corresponding switch control signal according to the processing result to control the state of each switch unit 114 to control the access state of each energy storage unit 116. In an embodiment, when the number of stored energy storage sub-devices 112 is less than the total amount thereof, the control device 140 causes the accessed energy storage sub-device 112 and the un-accessed energy storage sub-device 112 to pass through the switch control signal. Arranged at intervals, thereby facilitating heat dissipation of the energy storage unit 116 and improving the safety of the energy storage charging device.

The above energy storage charging device can adjust the output power according to the load power, so that the output power of the energy storage charging device matches the load power, thereby improving the charging efficiency. The above-mentioned energy storage charging device has a wide application range, and can also be suitably used in a non-electrical area such as a mountaintop, a seaside, an inconvenient power source area, or a region where power equipment is difficult to implement, and can also be used as an emergency power source device.

4 is a structural block diagram of an energy storage charging device in another embodiment, which includes an energy storage device 210, a detection device 220, a processing device 230, and a control device 240, and further includes an output interface 250, an input device 255, a display device 260, Protection device 265, charging device 270, discharging device 275, and equalization device 280. The parts that have been mentioned in the foregoing embodiments, such as the energy storage device 210, the detecting device 220, the processing device 230, and the control device 240, are not described herein.

The output interface 250 is for connection to a load and is coupled to the discharge device 275 and the detection device 220. There are a plurality of output interfaces 250 so that power can be supplied to multiple loads simultaneously.

In this embodiment, the detecting device 220 is further configured to detect the running data of the energy storage device 210 to determine whether it is safe to operate. The operational data may include parameters such as energy storage capacity, charge and discharge current, and voltage. The display device 260 is configured to display the operational data detected by the detecting device 220, the number of stored energy storage sub-devices, and status parameters. Therefore, the user can grasp the running state of the energy storage device 210 in time through the display device 260, thereby facilitating the power consumption planning.

The input device 255 is then used by the user to input load charging information. Specifically, the load charging information may include load power, planned charging duration, and the like. The processing device 230 then calculates the number of energy storage sub-devices that need to be accessed when the output power of the energy storage device 210 matches the load power according to the load charging information. The control device 240 controls the switching state of the switching unit according to the quantity, so that the control of the stored energy storage unit makes the output power meet the load power requirement and the two match, thereby improving the charging efficiency.

The protection device 265 is connected to the energy storage device 210 for temperature protection, overvoltage protection, overcurrent protection, etc., to ensure safe and stable operation of the entire system. The charging device 270 is connected to the control device 240 and the protection device 265, respectively. The charging device 270 is used to charge the energy storage device 210 using the power grid. In an embodiment, the energy storage charging device further includes a solar charging device connected to the energy storage device 210 through the protection device 265 to charge the energy storage device 210 by using solar energy. The discharge device 275 is connected to the control device 240, the protection device 265, and the output interface 250, respectively. The discharge device 275 is configured to convert the voltage of the energy storage device 210 to a target charging voltage under the control of the control device 240, and then charge a load such as an electric car or the like. The equalization device 280 is connected to the energy storage device 210 for achieving equalization of the cells in the energy storage device 210, ensuring that the voltages of the respective cells in the battery pack are consistent, and improving the service life of the battery cells.

In an embodiment, the energy storage charging device further includes a power distribution device. The power distribution device is coupled to the energy storage device 210 for distributing the output power of the energy storage device 210. Specifically, the power distribution device allocates the output power of the energy storage device 210 according to the number of loads accessed by the output interface 250 and the respective load powers. When the output power of the energy storage device 210 meets the access load power demand, the power distribution device allocates as needed. When the output power of the energy storage device 210 cannot meet all the load power requirements, the power distribution may be performed according to the priority level of each load, or the equal allocation may be performed to satisfy the charging requirements of multiple users as much as possible.

The present invention also provides a mobile charging device including a main body including a driving device for driving the mobile charging device to move, and an energy storage charging device according to any of the foregoing embodiments disposed in the main body. Therefore, the mobile charging device can adjust the output power according to the load power, so that the output power of the energy storage charging device matches the load power, thereby improving the charging efficiency. In an embodiment, the mobile charging device may be a vehicle body structure.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

An energy storage charging device for supplying power to a load, comprising:

The energy storage device includes a plurality of energy storage sub-devices connected by a cascade manner; the energy storage sub-device includes a switch unit and an energy storage unit connected to the switch unit; and the switch unit in the energy storage sub-device Controlling the access status of the energy storage unit;

a detecting device for connecting to the load and detecting the load power;

a processing device, coupled to the detecting device, configured to calculate, according to the load power, an amount of energy storage sub-devices that need to be accessed when the output power of the energy storage device matches the load power, and output a processing result;

The control device is respectively connected to the processing device and the switch unit; the control device is configured to generate a switch control signal according to the processing result to control a switch state of each switch unit to control an access state of each energy storage unit.
The energy storage charging device according to claim 1, wherein the plurality of energy storage sub-devices in the energy storage device are connected by a power line and a communication line.
The energy storage charging device according to claim 1, wherein a plurality of energy storage sub-devices in the energy storage device are connected in series; a switch unit in each energy storage sub-device is arranged in parallel with the energy storage unit; When the switch unit is in a closed state, the energy storage unit is controlled to be in an unconnected state; and when the switch unit is in an open state, the energy storage unit is controlled to be in an access state.
The energy storage charging device according to claim 1, wherein a plurality of energy storage sub-devices in the energy storage device are connected in parallel; a switching unit in each energy storage sub-device is arranged in series with the energy storage unit; When the switch unit is in a closed state, the energy storage unit is controlled to be in an access state; and when the switch unit is in an open state, the energy storage unit is controlled to be in an unconnected state.
The energy storage charging device of claim 1 further comprising an output interface coupled to said detecting device; said output interface for connection to a load.
The energy storage charging device according to claim 1, further comprising an input device connected to the control device for inputting load charging information by a user;

The processing device is further configured to calculate, according to the load charging information, the number of energy storage sub-devices that need to be accessed when the output power of the energy storage device matches the load power, and output a processing result.
The energy storage charging device according to claim 1, wherein the detecting device is further configured to detect operation data of the energy storage device;

The energy storage charging device further includes a display device coupled to the control device; the display device is configured to display operational data of the energy storage device.
The energy storage charging device according to claim 1, further comprising:

a protection device connected to the energy storage device for charging and discharging protection of the energy storage device;

Charging devices are respectively connected to the control device and the protection device for charging control of the energy storage device;

The discharge device is respectively connected to the control device and the protection device for performing discharge control on the energy storage device.
The energy storage charging device of claim 8 further comprising equalization means coupled to said energy storage device for equalizing control of said energy storage device.
The energy storage charging device of claim 1 further comprising a solar charging device coupled to said energy storage device for charging said energy storage charging device.
A mobile charging device includes a driving device for driving the mobile charging device to move, and further comprising an energy storage charging device; the energy storage charging device is configured to supply power to the load, including:

The energy storage device includes a plurality of energy storage sub-devices connected by a cascade manner; the energy storage sub-device includes a switch unit and an energy storage unit connected to the switch unit; and the switch unit in the energy storage sub-device Controlling the access status of the energy storage unit;

a detecting device for connecting to the load and detecting the load power;

a processing device, coupled to the detecting device, configured to calculate, according to the load power, an amount of energy storage sub-devices that need to be accessed when the output power of the energy storage device matches the load power, and output a processing result;

The control device is respectively connected to the processing device and the switch unit; the control device is configured to generate a switch control signal according to the processing result to control a switch state of each switch unit to control an access state of each energy storage unit.
The mobile charging device according to claim 11, wherein the plurality of energy storage sub-devices in the energy storage device are connected by a power line and a communication line.
The mobile charging device according to claim 11, wherein a plurality of energy storage sub-devices in the energy storage device are connected in series; a switching unit in each energy storage sub-device is arranged in parallel with the energy storage unit; When the switch unit is in the closed state, the energy storage unit is controlled to be in an unconnected state; and when the switch unit is in an open state, the energy storage unit is controlled to be in an access state.
The mobile charging device according to claim 11, wherein a plurality of energy storage sub-devices in the energy storage device are connected in parallel; a switch unit in each energy storage sub-device is arranged in series with the energy storage unit; The energy storage unit is controlled to be in an access state when the switch unit is in a closed state; and the energy storage unit is controlled to be in an unconnected state when the switch unit is in an open state.
The mobile charging device of claim 11 wherein said stored energy charging device further comprises an output interface coupled to said detecting device; said output interface for connection to a load.
The mobile charging device according to claim 11, wherein the energy storage charging device further comprises an input device connected to the control device for inputting load charging information by a user;

The processing device is further configured to calculate, according to the load charging information, the number of energy storage sub-devices that need to be accessed when the output power of the energy storage device matches the load power, and output a processing result.
The mobile charging device according to claim 11, wherein said detecting means is further configured to detect operating data of said energy storage device;

The energy storage charging device further includes a display device coupled to the control device; the display device is configured to display operational data of the energy storage device.
The mobile charging device of claim 11, wherein the energy storage charging device further comprises:

a protection device connected to the energy storage device for charging and discharging protection of the energy storage device;

Charging devices are respectively connected to the control device and the protection device for charging control of the energy storage device;

The discharge device is respectively connected to the control device and the protection device for performing discharge control on the energy storage device.
A mobile charging device according to claim 18, wherein said energy storage charging device further comprises equalization means coupled to said energy storage means for equalizing control of said energy storage means.
The mobile charging device of claim 11 wherein said stored energy charging device further comprises a solar charging device coupled to said energy storage device for charging said stored energy charging device.