TWI694658B - Battery management apparatus and installing method thereof - Google Patents

Abstract

A battery management apparatus and an installing method thereof are proposed. The battery management apparatus includes a battery assembly, a plurality of metal connecting units and a battery management unit. Each of the metal connecting units is made of a rigid metal material. Each of the metal connecting units includes a first abutting portion and a second abutting portion. The first abutting portions are connected to the battery assembly. The battery management unit includes a circuit board and an electronic module. The circuit board has a plurality of connecting nodes which are connected to the second abutting portions, respectively. The electronic module is disposed on the circuit board and configured to control charge and discharge of the battery assembly. Therefore, the battery management apparatus of the present disclosure may utilize the metal connecting units to firmly connect the battery assembly and the battery management unit so as to greatly simplify the circuit configuration and quickly complete the setting of the battery management unit. In addition, the battery management apparatus of the present disclosure may be relatively firm and reduce the occurrence of abnormal or dangerous situations.

Description

Battery management device and installation method thereof

The invention relates to a battery management device and an installation method thereof, in particular to a battery management device and an installation method which can be installed quickly, simplify the line configuration, be safe and stable, and can avoid abnormal states and dangers.

With the advancement of green energy technology, the application of energy storage systems composed of a large number of batteries has become more and more popular in various power systems, such as: electric vehicles, emergency backup systems, renewable energy systems, smart grids, or home energy storage Equipment etc.

A general battery management device includes a battery pack and a battery management unit, where the battery management unit includes a voltage measurement line and a cell balance line. In the past, when the traditional voltage measurement line and the cell balance line were connected in the past, usually the multi-core line, Y\O-type terminal and connection seat were used to configure the line before they could be connected to the battery pack, and on the single cell pole At the same time exist in multiple connection nodes. Under this structure, when the battery management unit is in operation, an error in voltage measurement may be caused by a small loss of voltage on the connection node. This error may cause an erroneous judgment of the battery management unit and promote the occurrence of abnormal conditions and dangers. In addition, since the conventional circuit board and battery pack are connected using multi-core wires, Y\O-type terminals or a connector, the fixed point of the circuit board must be additionally fixed to avoid the circuit board from being caused by external forces. Break away. However, this additional fixing method often significantly increases the installation complexity and installation time of the installer during the installation process.

It can be seen that the current market lacks a battery management device and installation method that can be quickly installed, simplified circuit configuration, safe and stable, and can avoid abnormal conditions and dangers. Therefore, related companies are looking for solutions.

Therefore, the object of the present invention is to provide a battery management device and its installation method, which connects the circuit board and the battery pack through the rigid metal connection unit, which can greatly simplify the circuit configuration and quickly complete the circuit configuration, thereby saving the circuit configuration time spent.

According to one embodiment of the structural aspect of the present invention, a battery management device is provided, which includes a battery pack, a plurality of metal connection units, and a battery management unit. The metal connection unit is made of a rigid metal material. Each metal connection unit includes a first connection portion and a second connection portion. The first connection portion is electrically connected to the battery pack. Furthermore, the battery management unit includes a circuit board and an electronic module, wherein the circuit board includes a plurality of connection nodes, and the connection nodes are respectively connected to the second connection part. As for the electronic module, it is installed on the circuit board and used to control the charging and discharging of the battery pack.

In this way, the battery management device of the present invention replaces the traditional flexible multi-core electric wire with a rigid metal connection unit, which is relatively strong and can reduce the occurrence of abnormal or dangerous situations.

Other embodiments of the foregoing embodiments are as follows: The battery pack may include a plurality of batteries, and each battery is connected to a metal connection unit and is electrically connected to one of the connection nodes of the circuit board through the metal connection unit. In addition, the foregoing circuit board may have an upper layer and a lower layer, and the circuit board includes a plurality of voltage measurement lines and a plurality of cell balance lines. The voltage measurement lines are distributed on the upper layer, and the voltage measurement lines are respectively electrically connected to the connection nodes of the circuit board. The cell balancing lines are distributed on the lower layer, and the cell balancing lines are electrically connected to the connection nodes of the circuit board respectively. The electronic module is electrically connected to the voltage measurement line and the cell balance line. In addition, each of the metal connection units can be made of copper and has a sheet shape, and each metal connection unit further includes a third connection portion, which is connected to the first connection portion and the second connection portion of the metal connection unit between. There is a first angle between the third connection portion and the first connection portion, and there is a second angle between the third connection portion and the second connection portion. The first angle and the second angle are greater than 45 degrees and less than 135 degrees. Furthermore, each of the first connection portions has a first hole, and each second connection portion has a second hole, the first hole is aligned with the electrode of the battery pack, and the second hole is aligned with one of the connection nodes. In addition, the foregoing battery management device may include a plurality of first fixing pieces and a plurality of second fixing pieces, wherein the first fixing pieces respectively correspond to penetrate the first hole and are screwed to the electrodes of the battery pack. The second fixing parts respectively correspond to the second holes and are screwed on the circuit board. In addition, the aforementioned battery management device may include a plurality of metal guides, each metal guide is electrically connected and fixed between two adjacent batteries, and each metal guide is connected to the first connection portion of one of the metal connection units.

According to one embodiment of the method aspect of the present invention, an installation method of a battery management device is provided, which includes a metal connection unit installation step and a battery management unit installation step. The step of installing the metal connection unit is to install the first connection portion of the metal connection unit to the battery pack, so that the metal connection unit is fixedly connected to the battery pack. In addition, the battery management unit installation step is to install the battery management unit on the second connection portion of the metal connection unit, so that the battery management unit is fixedly connected to the metal connection unit.

In this way, the installation method of the battery management device of the present invention connects the circuit board and the battery pack with a copper connecting piece (ie, a metal connection unit), which not only improves the overall robustness, but also does not require additional fixing of the circuit board. Save time and effort.

Other examples of the foregoing embodiments are as follows: In the step of installing the metal connection unit, the first holes of each first connection part are aligned with the electrodes of the battery pack, and then the first fixing members are driven to screw through the first holes respectively For the electrode of the battery pack. In addition, in the foregoing installation step of the battery management unit, the second holes of each second connection portion are aligned with one of the connection nodes, and then the second fixing members are driven to respectively penetrate through the second holes to be screwed on the circuit board.

100‧‧‧Battery management device

200‧‧‧ battery pack

210‧‧‧Battery

300‧‧‧Metal connection unit

310‧‧‧First connection

3102‧‧‧First hole

320‧‧‧Second connection

3202‧‧‧Second hole

330‧‧‧The third connection

400‧‧‧ battery management unit

410‧‧‧ circuit board

412‧‧‧ connection node

420‧‧‧Electronic module

430‧‧‧Voltage measuring line

440‧‧‧cell balance line

500‧‧‧First fixing

600‧‧‧Second fixing piece

700‧‧‧Metal guide

800‧‧‧Installation method of battery management unit

S2‧‧‧Installation steps of metal connection unit

S4‧‧‧ battery management unit installation steps

θ 1‧‧‧ First angle

θ 2‧‧‧Second included angle

FIG. 1 is an assembly diagram of a battery management device according to an embodiment of the invention.

FIG. 2 is an exploded view of the battery management device of FIG. 1.

FIG. 3A is a schematic diagram of the metal connection unit of FIG. 1.

FIG. 3B is a top view of the metal connection unit of FIG. 3A.

FIG. 3C is a side view of the metal connection unit of FIG. 3A.

FIG. 4 is a top view of the battery management unit of FIG. 1.

FIG. 5 is a schematic flowchart of the installation method of the battery management unit of FIG. 1.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some conventionally used structures and elements will be shown in a simple schematic manner in the drawings; and repeated elements may be indicated by the same number.

Please also refer to FIGS. 1, 2, 3A, 3B, and 3C. FIG. 1 is an assembly diagram of the battery management device 100 according to an embodiment of the present invention. FIG. 2 is an exploded view of the battery management device 100 of FIG. 1. FIG. 3A is a schematic diagram of the metal connection unit 300 of FIG. 1. FIG. 3B is a top view of the metal connection unit 300 of FIG. 3A. FIG. 3C is a side view of the metal connection unit 300 of FIG. 3A. As shown in the figure, the battery management device 100 includes a battery pack 200, a plurality of metal connection units 300, a battery management unit 400, a plurality of first fixing members 500, a plurality of second fixing members 600, and a plurality of metal guides 700.

The battery pack 200 includes a plurality of batteries 210. Each battery 210 is connected to a metal connection unit 300 and is electrically connected to one of the connection nodes 412 of the circuit board 410 of the battery management unit 400 through the metal connection unit 300.

The metal connection unit 300 is made of rigid metal material. Each metal connection unit 300 includes a first connection portion 310, a second connection portion 320, and a third connection portion 330. The first connection portion 310 is electrically connected to the battery pack 200. In detail, the metal connection unit 300 is made of copper and has a sheet shape, the third connection portion 330 is connected between the first connection portion 310 and the second connection portion 320, and the third connection portion 330 and the first connection portion 310 There is a first included angle θ1 therebetween, and there is a second included angle θ2 between the third connecting portion 330 and the second connecting portion 320. The first included angle θ1 and the second included angle θ2 are greater than 45 degrees and less than 135 degrees. In this embodiment, the first included angle θ1 and the second included angle θ2 are both 90 degrees. In addition, each first connection portion 310 has a first hole 3102, and each second connection portion 320 has a second hole 3202. The first hole 3102 is aligned with the electrode of one battery 210 of the battery pack 200, and the second hole 3202 is aligned with one of the connection nodes 412 of the circuit board 410 of the battery management unit 400.

The battery management unit 400 includes a circuit board 410 and an electronic module 420, wherein the circuit board 410 includes a plurality of connection nodes 412, and the connection nodes 412 are respectively connected to the second connection part 320. As for the electronic module 420, it is disposed on the circuit board 410 and used to control the charging and discharging of the battery pack 200.

The first fixing members 500 respectively correspond to the first holes 3102 and are screwed to the electrodes of the battery pack 200, and the second fixing members 600 respectively correspond to the second holes 3202 and are screwed to the circuit board 410. In this embodiment, the first fixing member 500 is a screw, and the second fixing member 600 is a combination of a screw and a nut. The fixing structures of these screw locks are conventional technologies, so they will not be described in detail.

The metal guide 700 is made of rigid metal material. Each metal guide 700 is electrically connected and fixed between two adjacent batteries 210, and each metal guide 700 is connected to the first connection part 310 of one of the metal connection units 300. In addition, one end of the metal guide 700 is superposed on the first connection portion 310, and both ends of the metal guide 700 can be fixed to the electrodes of the battery 210 using the first fixing member 500. In this way, in order to save time for wiring configuration, the present invention connects the circuit board 410 and the battery pack 200 through the rigid copper sheet (ie, the metal connection unit 300), which can quickly complete the wiring configuration. Moreover, the two adjacent batteries 210 can be electrically connected through the rigid metal guide 700, which is not only convenient for disassembly and assembly but also stable and safe. In addition, the rigid copper sheet replaces the traditional soft multi-core wire, which is stronger and can reduce the occurrence of abnormal or dangerous conditions. It is also worth mentioning that although the metal guide 700 in FIG. 2 is located above the first connection portion 310 of the metal connection unit 300, in other embodiments, the metal guide 700 may also be disposed on the metal connection unit 300 Below the first connection part 310, it suffices that the two adjacent batteries 210 can be electrically connected.

Please refer to FIGS. 1, 2 and 4 together. FIG. 4 is a top view of the battery management unit 400 of FIG. 1. As shown in the figure, the circuit board 410 of the battery management unit 400 has an upper layer and a lower layer, and the circuit board 410 further includes a plurality of voltage measurement lines 430 (thin line on the right side) and a plurality of cell balancing lines 440 (the left side is thicker) Line). The voltage measuring line 430 is distributed on the upper layer, the voltage measuring line 430 is electrically connected between the connection node 412 and the electronic module 420, and the voltage measuring line 430 is used to measure the voltage of a single cell. In addition, the cell balancing line 440 is distributed in the lower layer, and the cell balancing line 440 is electrically connected between the connection node 412 and the electronic module 420 respectively. The cell balancing line 440 is used to allow the cells to perform balanced charging. Since there are eight voltage measuring lines 430 and cell balancing lines 440 each, and the circuit is relatively complicated, the present invention uses the connection node 412 of the circuit board 410 and the line setting to make the battery pack 200 and the battery management unit 400 Line connection is relatively simple. In other words, according to the present invention, the voltage distribution line 430 and the cell balance line 440 are distributed, and a connection node 412 that can be correspondingly connected to the battery pack 200 is planned on the circuit board 410. In addition, the connection between the connection node 412 and the metal connection unit 300 can be fixed with screws and nuts to complete the circuit configuration.

Please refer to FIGS. 1 and 5 together. FIG. 5 is a schematic flowchart of the method 800 for installing the battery management unit of FIG. 1. As shown in the figure, the battery management unit installation method 800 includes a metal connection unit installation step S2 and a battery management unit installation step S4.

The metal connection unit installation step S2 is to install the first connection part 310 of the metal connection unit 300 on the battery pack 200 so that the metal connection unit 300 is fixedly connected to the battery pack 200. In the mounting step S2 of the metal connection unit, the first holes 3102 of the first connection parts 310 are aligned with the electrodes of the battery pack 200, and then the first fixing members 500 are driven to penetrate the first holes 3102 respectively and are screwed to the battery pack 200之electrode. In other words, the metal fixing unit 300 can be firmly positioned on the battery 210 through the first fixing member 500.

The battery management unit installation step S4 is to install the battery management unit 400 on the second connection portion 320 of the metal connection unit 300, so that the battery management unit 400 is fixedly connected to the metal connection unit 300. In the step S4 of installing the battery management unit, the second holes 3202 of the second connection parts 320 are aligned with one of the connection nodes 412, and then the second fixing member 600 is driven to screw through the connection nodes 412 and the second holes 3202 respectively On the circuit board 410. That is, the circuit board 410 can be firmly positioned on the metal connection unit 300 through the second fixing member 600. In this way, the method 800 for installing the battery management unit of the present invention can improve the manufacturing efficiency of the circuit configuration. In addition, since the conventional circuit board 410 and the battery pack 200 are connected using multi-core wires, Y\O-type terminals or a connector, the fixed point of the circuit board 410 must be additionally fixed to avoid the circuit board 410 due to external forces The circuit is disconnected, and the present invention connects the circuit board 410 and the battery pack 200 with a copper sheet metal connection unit 300, which not only improves the overall robustness, but also does not need to additionally fix the circuit board 410, which saves time And effortless.

It can be seen from the above embodiments that the present invention has the following advantages: First, in order to save the time spent on circuit configuration, the present invention connects the circuit board and the battery pack through the rigid metal connection unit, which can greatly simplify the circuit configuration and quickly complete the circuit Settings. Second, the two adjacent batteries can be electrically connected through the rigid metal guide, which is not only convenient for disassembly and assembly but also stable and safe. Third, the rigid metal connection unit replaces the traditional soft multi-core wire, which is relatively strong and can reduce the occurrence of abnormal or dangerous situations. In addition, the use of a rigid metal connection unit does not require additional fixing of the circuit board, which saves time and effort.

Although the present invention has been disclosed as above in an embodiment, it is not intended to limit the present invention. Anyone who is familiar with this art can make various modifications and retouching without departing from the spirit and scope of the present invention, so the protection of the present invention The scope shall be as defined in the appended patent application scope.

100‧‧‧Battery management device

200‧‧‧ battery pack

210‧‧‧Battery

300‧‧‧Metal connection unit

320‧‧‧Second connection

330‧‧‧The third connection

400‧‧‧ battery management unit

500‧‧‧First fixing

310‧‧‧First connection

600‧‧‧Second fixing piece

700‧‧‧Metal guide

Claims (8)

A battery management device includes: a battery pack; a plurality of metal connection units made of rigid metal materials, each of the metal connection units includes a first connection portion and a second connection portion, the first connection portions are all Electrically connected to the battery pack; and a battery management unit, including: a circuit board including a plurality of connection nodes, the connection nodes are respectively connected to the second connection parts; and an electronic module is provided on the circuit board and It is used to control the charging and discharging of the battery pack; wherein, each of the first connection parts has a first hole, each of the second connection parts has a second hole, the first hole is aligned with the electrode of the battery pack, the second The holes are aligned with one of the connection nodes; wherein, the battery management device further includes: a plurality of first fixing members respectively corresponding to the electrodes that are screwed into the battery pack through the first holes; and a plurality of second fixing members respectively corresponding to Screw through the second holes and screw on the circuit board. The battery management device as described in item 1 of the patent application scope, wherein the battery pack includes: A plurality of batteries, each of which is connected to the metal connection unit and is electrically connected to one of the connection nodes of the circuit board through the metal connection unit. The battery management device as described in item 1 of the patent application scope, wherein the circuit board has an upper layer and a lower layer, and the circuit board further includes: a plurality of voltage measurement lines distributed on the upper layer, the voltage measurement lines are respectively Are electrically connected to the connection nodes; and a plurality of cell balance lines are distributed on the lower layer, the cell balance lines are electrically connected to the connection nodes respectively; wherein, the electronic module is electrically connected to the voltage measurement lines And these cell balance lines. The battery management device as described in item 1 of the patent application scope, wherein each of the metal connection units is made of copper and is in a sheet shape, and each of the metal connection units further includes: a third connection portion, which is connected to a metal Between the first connection portion and the second connection portion of the connection unit, there is a first angle between the third connection portion and the first connection portion, and between the third connection portion and the second connection portion A second included angle, the first included angle and the second included angle are greater than 45 degrees and less than 135 degrees. The battery management device as described in item 2 of the patent application scope further includes: a plurality of metal guides, each of the metal guides is electrically connected and fixed between two adjacent batteries, and each of the metal guides is connected to one The first connection portion of the metal connection unit. An installation method applied to the battery management device described in item 1 of the patent application includes the following steps: a metal connection unit installation step, in which the first connection parts of the metal connection units are installed on the battery Group, so that the metal connection units are fixedly connected to the battery pack; and a battery management unit installation step is to install the battery management unit on the second connection portions of the metal connection units, so that the battery management unit The metal connection units are fixedly connected. The installation method of a battery management device as described in item 6 of the patent application scope, wherein, in the step of installing the metal connection unit, the first hole of each first connection portion is aligned with the electrode of the battery pack, and then The first fixing members are driven to respectively penetrate through the first holes and are screwed to the electrodes of the battery pack. The installation method of the battery management device as described in item 7 of the patent application scope, wherein, in the installation step of the battery management unit, the second holes of the second connection portions are aligned with one of the connection nodes, and then The second fixing members are driven to respectively penetrate through the second holes and are screwed on the circuit board.

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