TWI643374B - Battery switching device - Google Patents

Abstract

The invention provides a battery switching device, comprising a plurality of battery packs, a power connection mechanism, a power detecting mechanism and a management control mechanism, each battery pack has a plurality of batteries, and the power connection mechanism comprises a battery electrically connected to an electric device. The power output member and a charging receiving member electrically connected to the power generating device, the power detecting mechanism electrically connects the plurality of battery packs, and the management control unit controls the at least one battery pack to be electrically connected according to the detection result of the power detecting mechanism The power supply output member supplies power to the electric device through the power supply output member, and controls at least one of the other battery groups to be electrically connected to the charge receiving member to be charged by the power receiving device to receive electric energy generated by the power generating device.

Description

Battery switching device

The present invention relates to a battery, and more particularly to a battery switching device.

The principle of the battery is to convert the internal stored chemical energy into electrical energy to provide electricity to the device, such as an electric motor. To restore the chemical energy inside the battery, the charging device can be used to supply external electrical energy to the battery to convert the electrical energy. The chemical energy inside the battery, so the amount of chemical energy stored inside the battery can be regarded as the battery power. On the other hand, the voltage of the battery has a certain standard specification, such as 12 volts. Therefore, when a device using a battery requires a higher voltage to operate, it is often used to form a battery pack in series to supply power to the device. When charging, it is also charged in units of battery packs.

However, when the battery inside the battery pack is powered, the power consumption rate of each battery is often inconsistent. In some cases, the power of one battery has been exhausted, and the entire battery pack continues to supply power because other batteries still have power, causing the battery to have a low battery for a long time and adversely affect its service life. On the other hand, when charging, the charging time required for each battery is not the same, so in some cases, the power of one battery is already full, but the other batteries are still not full, causing the battery to be overcharged and shortened. Service life.

Therefore, in order to solve the above problems, an object of the present invention is to provide a battery switching device that can control the battery power of each battery of the battery pack to maintain a certain range and protect battery life.

The technical means for solving the problems of the prior art is to provide a battery switching device, comprising: a plurality of battery packs, each of the battery packs having a plurality of batteries; a power connection mechanism comprising a power output member and a charging a receiving member, the power output member is electrically connected to an electric device for transmitting electrical energy to drive the electric device, and the charging receiving member is electrically connected to a power generating device for receiving electric energy generated by the power generating device by generating electricity; a measuring mechanism electrically connecting the plurality of battery packs for detecting respective powers of the plurality of batteries to obtain a detection result; and a management control mechanism electrically connecting the power detecting mechanism and the plurality of battery packs, The management control unit controls the at least one battery pack of the plurality of battery packs to be electrically connected to the power supply output member to supply power to the electric device through the power supply output member according to the detection result of the power detecting mechanism, and to control Equivalently connecting at least one of the other battery packs of the plurality of battery packs to the charging reception Member and receives power via the power generated by the power generation means through the charge-receiving member is charged.

In an embodiment of the invention, a battery switching device is provided, wherein a quantity of the battery pack electrically connected to the power supply output member is lower than a preset value, and the management control mechanism controls another one of the plurality of battery packs A battery pack is electrically connected to the power supply output member and supplies power to the electric device through the power supply output member.

In an embodiment of the present invention, a battery switching device is provided. The management control mechanism controls a battery pack having the highest total amount of electric power in the plurality of battery packs to be electrically connected to the power supply output member and transmitted to the power supply member through the power supply output member. The device is powered.

In an embodiment of the present invention, a battery switching device is provided, wherein a quantity of a battery of the battery pack electrically connected to the power supply output member is lower than a preset value, and the management control mechanism controls the plurality of batteries Another battery pack in the battery pack is electrically connected to the power supply output member and supplies power to the electric device through the power supply output member.

In an embodiment of the present invention, a battery switching device is provided, wherein a quantity of the battery electrically connected to the charging receiving member is higher than a preset value, and the management control unit controls the plurality of The other battery in the battery pack is electrically connected to the charging receiving member and is charged by the charging receiving member to receive electric energy generated by the power generating device by power generation.

In an embodiment of the present invention, a battery switching device is provided, wherein a battery of the battery electrically connected to the charging receiving member is higher than a predetermined value, and the management control mechanism controls a battery with the lowest battery in the plurality of battery groups. The charging receiving member is electrically connected to the charging receiving member, and receives electric energy generated by the power generating device by the power generating device to be charged.

In an embodiment of the invention, a battery switching device is provided, wherein a quantity of the battery electrically connected to the charging receiving member is higher than a preset value, and the management control unit controls the lowest total amount of the plurality of battery units. The battery having the lowest electric charge in the battery pack is electrically connected to the charging receiving member and is charged by the charging receiving member to receive electric energy generated by the power generating device by power generation.

According to the technical means adopted by the present invention, when the total amount of the battery pack is lower than a certain value or the battery capacity of the battery pack is lower than a certain value, the management control mechanism makes the battery not even if the power output member is electrically connected to the other battery pack. It is low for a long time. Moreover, the specific battery of the battery pack can be separately charged by the charging receiving member, thereby reducing the power gap between the batteries of the battery pack, thereby making the power of each battery of the battery pack controllable in a safe range, not only charging and power supply. Effectively, the battery will not be in a low battery for a long time or be overcharged, thus protecting the battery life.

The specific embodiments of the present invention will be further described by the following examples and the accompanying drawings.

100‧‧‧Battery switching device

11‧‧‧Battery Pack

111‧‧‧Battery

112‧‧‧Battery

113‧‧‧Battery

114‧‧‧Battery

115‧‧‧Battery

116‧‧‧Battery

12‧‧‧Battery Pack

121‧‧‧Battery

122‧‧‧Battery

122‧‧‧Battery

123‧‧‧Battery

124‧‧‧Battery

125‧‧‧Battery

126‧‧‧Battery

13‧‧‧Battery Pack

131‧‧‧Battery

132‧‧‧Battery

133‧‧‧Battery

134‧‧‧Battery

135‧‧‧Battery

136‧‧‧Battery

2‧‧‧Power connection mechanism

21‧‧‧Power supply components

22‧‧‧Charging receiving components

3‧‧‧Power detection agency

4‧‧‧Management control agency

M‧‧‧Electrical device

P‧‧‧Power generation unit

R‧‧‧Detection results

V‧‧‧ electric motor car

Fig. 1 is a schematic view showing a battery switching device according to an embodiment of the present invention.

Fig. 2 is a block diagram showing a battery switching device according to an embodiment of the present invention.

Fig. 3 is a block diagram showing a battery switching device according to an embodiment of the present invention.

Fig. 4 is a block diagram showing a battery switching device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described based on Figs. 1 to 4 . This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

As shown in FIG. 1 to FIG. 3, a battery switching device 100 according to an embodiment of the present invention includes three battery packs 11, 12, 13, a power connection mechanism 2, a power detecting mechanism 3, and a management control mechanism. 4. In the present embodiment, the battery switching device 100 is used for an electric motor vehicle V and is electrically connected to an electric device M and a power generating device P of the electric motor vehicle V. However, the present invention is not limited to an electric motor vehicle or an electric vehicle. The field can also be used in other fields of equipment with electric devices and power generating devices.

In the present embodiment, the battery packs 11, 12, 13 each have six batteries. The battery pack 11 has batteries 111, 112, 113, 114, 115, 116, the battery pack 12 has batteries 121, 122, 123, 124, 125, 126, and the battery pack 13 has batteries 131, 132, 133, 134, 135, 136. . In this embodiment, the batteries of the respective battery packs are connected in series to make the battery pack have sufficient voltage for output, but the invention is not limited thereto, and the batteries of the respective battery packs may also be connected in parallel.

The power connection mechanism 2 includes a power supply output member 21 and a charge receiving member 22, and the power supply output member 21 is electrically connected to the electric device M for transmitting electric energy to drive the electric device M. The charging receiving member 22 is electrically connected to the power generating device P for receiving electric energy generated by the power generating device P by power generation. At the beginning of the embodiment, the battery pack 11 is disposed to be electrically connected to the power supply output member 21 to supply power to the electric device M through the power supply output member 21, and one of the batteries 122 of the other battery pack 12 is electrically connected to be charged. The receiving member 22 is charged by the power receiving device 22 to receive electric energy generated by the power generating device P by power generation. However, the present invention is not limited thereto, and a plurality of battery packs may be electrically connected to the power supply output member to supply power to the electric device through the power supply output member, and the plurality of batteries are electrically connected to the charging receiving member to receive power generated by the power generating device P to generate electricity. Charging.

The power detecting mechanism 3 electrically connects the batteries of the battery packs 11, 12, and 13 and the battery packs 11, 12, and 13 to detect the respective powers of the plurality of batteries to obtain a detection result R.

The management control unit 4 electrically connects the power detecting mechanism 3 and the battery packs 11, 12, and 13.

After a period of time, the total amount of power of the battery pack 11 (the total amount of power of the battery) is lowered by the power supply, and the battery 122 is increased in charge due to charging. According to the detection result R, the highest total amount of electricity among the three battery packs is the battery pack 12, and the lowest of all the batteries is the battery 116. As shown in FIG. 2 and FIG. 3, the power of the battery pack 11 electrically connected to the power supply output member 21 is lower than a predetermined value, and the management control unit 4 controls the change according to the detection result R of the power detecting mechanism 3. The other battery pack 12 is electrically connected to the power supply output member 21 to supply power to the electric device M through the power supply output member 21, and the battery pack 11 that is originally electrically connected to the power supply output member 21 stops supplying power. The preset value may be a fixed value, for example, 20% of the total power, or a non-fixed value, such as the average value of the total power of each battery pack or the battery value of the battery with the highest total power, or the highest total power. The battery pack's power value differs by a certain amount. For example, the total power value of the battery pack 12 is 95%. When the total power of the battery pack 11 is less than 45% and the battery pack 12 differs by more than 50%, the management control unit 4 electrically connects the battery pack 12 to the power supply output member 21. .

In the present embodiment, the management control unit 4 controls to change the other battery pack 12 to be electrically connected to the power supply output member 21 according to the total power of the battery pack 11 being lower than a predetermined value. However, the present invention is not limited thereto. In another example, the power of any of the batteries of the battery pack 11 electrically connected to the power supply output member 21 is lower than a predetermined value (for example, the battery 116), and the management control unit 4 controls The other battery pack (for example, the battery pack 12) is electrically connected to the power supply output member 21 to supply power to the electric device M through the power supply output member 21.

On the other hand, the power of the battery 122 electrically connected to the charging receiving member 22 is higher than a predetermined value, and the management control unit 4 controls the other battery packs according to the detection result R (electrically connected to the battery pack 12 of the power supply output member 21). At least one of the other battery packs (the battery 116 having the lowest charge among all the batteries in the present embodiment) is electrically connected to the charge receiving member 22 and transmitted through the charge receiving member 22 The power generating device P is charged by the electric energy generated by the power generation, and the battery 122 originally electrically connected to the charging receiving member 22 no longer receives the electric energy of the power generating device P. The preset value may be a fixed value, for example, 95% of the power, or a non-fixed value, such as the average value of each battery or the battery value of the lowest battery, or the difference between the battery value of the lowest battery. The value of the degree. For example, the battery 116 has a charge value of 15%. When the battery 122 has a charge of more than 45% and differs from the battery 116 by more than 30%, the management control unit 4 causes the battery 116 to be electrically connected to the charge receiving member 22.

In the present embodiment, the management control unit 4 controls the battery (the battery 116 in this embodiment) having the lowest charge among the respective battery packs to be electrically connected to the charge receiving member 22. However, the present invention is not limited thereto. In another embodiment, as shown in FIG. 4, the power of the battery 122 electrically connected to the charging receiving member 22 is higher than a predetermined value, and the management control unit 4 controls the battery pack 11. The battery 133 having the lowest electric charge among the battery packs 13 having the lowest total electric quantity in 12, 13 is electrically connected to the charging receiving member 22, and is received by the charging receiving member 22 to receive electric energy generated by the power generating device P by electric power generation.

With the above configuration, when the total amount of the battery 11 electrically connected to the power supply output member 21 is low or the amount of power of any of the batteries of the battery pack 11 is low, the management control unit 4 can cause the power supply output member 21 to be electrically generated according to the detection result R. Connected to other battery packs (in this embodiment, the battery pack 12 having the highest total power), and when the amount of the charged battery 122 is higher than a certain level, the management control unit 4 causes the charge receiving member according to the detection result R. 22 is electrically connected to the battery of other battery packs.

Therefore, the power of the battery switching device 100 of the present invention can be efficiently distributed and utilized by the management control mechanism 4, and each battery can be kept in a safe range, not in a low battery for a long time or overcharged. Protect the battery from damage. Moreover, the specific battery can be individually charged through the charging receiving member 22, and the current during charging does not need to pass through other batteries first, so that the power loss can be effectively reduced, and the charging efficiency is improved.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those of ordinary skill in the art can be made according to the scope of the invention as defined below and the description above. It is to be understood that the modifications are still within the scope of the invention as set forth in the appended claims.

Claims (7)

A battery switching device includes: a plurality of independent battery packs, each of the battery packs having a plurality of batteries; a power connection mechanism including a power output member and a charging receiving member, the power output member electrically connected to an electric device, To transmit electric energy to drive the electric device, the charging receiving member is electrically connected to a power generating device for receiving electric energy generated by the power generating device, and a power detecting mechanism electrically connecting the plurality of battery packs for detecting Detecting the respective powers of the plurality of batteries to obtain a detection result; and a management control mechanism electrically connecting the power detecting mechanism and the plurality of battery packs, wherein the management control mechanism is based on the detection result of the power detecting mechanism And controlling to electrically connect at least one of the plurality of battery packs to the power supply output member to supply power to the electric device through the power supply output member, and to control the battery packs in the plurality of battery packs different from the power supply battery pack The other battery pack causes at least one selected from the plurality of batteries of each of the other battery packs The battery is electrically connected to the charging receiving member and receives the electric energy generated by the power generating device through the charging receiving member to be charged, and the battery receives power from the power generating device while the battery pack supplies power to the electric device. Charging. The battery switching device of claim 1, wherein the battery control unit is configured to control another battery pack of the plurality of battery packs when a battery level of the battery pack electrically connected to the power supply output member is lower than a predetermined value The power supply member is electrically connected to the power supply output member to supply power to the electric device. The battery switching device according to claim 2, wherein the management control unit controls the battery pack having the highest total amount of electric power among the plurality of battery packs to be electrically connected to the power supply output member to supply power to the electric device through the power supply output member. The battery switching device of claim 1, wherein the power of any one of the battery packs electrically connected to the power supply output member is lower than a predetermined value, the management control mechanism controls the Another battery pack of the plurality of battery packs is electrically connected to the power supply output member and supplies power to the electric device through the power supply output member. The battery switching device of claim 1, wherein the battery of the battery electrically connected to the charging receiving member is higher than a predetermined value, the management control mechanism controls to electrically charge the other battery of the plurality of battery groups The charging receiving member is connected to the charging receiving member to receive electric energy generated by the power generating device by electric power generation and charged. The battery switching device of claim 5, wherein the battery of the battery electrically connected to the charging receiving member is higher than a predetermined value, and the management control mechanism controls the battery with the lowest battery in the plurality of battery groups to be electrically connected. The charging receiving member receives the electric energy generated by the power generating device through the charging receiving member and is charged. The battery switching device of claim 5, wherein the battery of the battery electrically connected to the charging receiving member is higher than a predetermined value, the management control mechanism controls the battery pack having the lowest total amount of the plurality of battery groups The battery having the lowest electric quantity is electrically connected to the charging receiving member and is charged by the charging receiving member to receive electric energy generated by the power generating device by power generation.