CN218472039U - External battery balancing device - Google Patents
External battery balancing device Download PDFInfo
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- CN218472039U CN218472039U CN202222061012.8U CN202222061012U CN218472039U CN 218472039 U CN218472039 U CN 218472039U CN 202222061012 U CN202222061012 U CN 202222061012U CN 218472039 U CN218472039 U CN 218472039U
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- battery
- balancing device
- balancing
- equalizing
- equalization
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Abstract
The utility model relates to an automobile battery equalization technology field specifically is an external battery equalization device, including the battery box, still include: an equalizing device interface located on the battery box; one end of the balancing device wire harness is connected with the balancing device interface; and the battery balancing device, the battery balancing device with the other end of balancing device pencil is connected, the utility model discloses external battery balancing device, novel structure need not tear the machine just can be balanced, and just passive balancing device equalizing current is bigger, reserves equalizing resistance in large quantity, can increase equalizing current, reaches better balanced effect.
Description
Technical Field
The utility model relates to an automobile battery equalization technology field specifically is an external battery equalization device.
Background
The battery balancing device is used for balancing a plurality of battery units in the battery pack by using a balancing resistor, and comprises a controller, a resistor switching circuit and a balancing resistor, wherein the resistor switching circuit is used for connecting the balancing resistor with the battery units appointed by the controller in parallel under the control of the controller; the controller is used for collecting a voltage value of each battery unit in the plurality of battery units, determining the residual capacity of each battery unit according to the collected voltage value, and controlling the resistance switching circuit to connect the equalizing resistance and the battery unit in parallel under the condition that one battery unit is determined to meet the switching condition, wherein the switching condition is as follows: the remaining capacity of the battery cell is higher than the average remaining capacity of the plurality of battery cells by a predetermined value. The invention can intelligently balance the battery units, effectively reduce the difference between the battery units and save the volume and the cost of equipment.
The design scheme that equalizer circuit and BMS mainboard are at same circuit board is adopted to current battery package, and BMS's electric core in case pressure differential exceeds certain limit, just can't come the equilibrium with BMS, and the battery package can get into the protect state, can't go up high pressure, can only disassemble the battery package at this time, carries out outside equilibrium to electric core, consequently, to above current situation, the urgent need develops an external battery balancing unit to overcome not enough in the current practical application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an external battery balancing unit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an external battery balancing device, includes the battery box, still includes:
an equalizing device interface located on the battery box;
one end of the balancing device wire harness is connected with the balancing device interface; and
and the battery balancing device is connected with the other end of the balancing device wire harness.
As a further aspect of the present invention: the battery balancing device comprises a balancing device base and a monitoring unit, wherein the monitoring unit is positioned in the balancing device base and detachably connected with the battery box.
As a further aspect of the present invention: the monitoring unit includes: the balanced circuit board is connected with the balanced device base through a fixing bolt;
the communication interface is arranged on the base of the balancing device and is also detachably connected with the battery box; and
and one end of the connecting wire is connected with the balanced circuit board, and the other end of the connecting wire is connected with the communication interface.
As a further aspect of the present invention: further comprising: and the radiating fin is connected with the equalizing device base and is positioned on the top of the equalizing device base.
As a further aspect of the present invention: further comprising: and the heat radiation fan is positioned on the middle part of the heat radiation fin and is communicated with the equalizing device base.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the device can realize the balance function under the condition of large cell pressure difference without disassembling a battery pack;
2. the device realizes the large-current balance state under different conditions by internally arranging a plurality of resistors on the balance circuit board;
3. the device effectively transfers local temperature through a large-area balanced circuit board;
4. the device increases the consistency of the battery through secondary equalization;
5. the device dissipates the temperature to the environment through a heat dissipation fan.
Drawings
Fig. 1 is a schematic diagram of the circuit connection of the external battery equalization device of the present invention.
Fig. 2 is a schematic structural diagram of the interface portion of the equalizing device of the present invention.
Fig. 3 is an exploded schematic view of the battery balancing device according to the present invention.
In the figure: 1-battery balancing device, 2-cooling fan, 3-cooling fin, 4-balancing device wiring harness, 5-balancing device interface, 6-battery box, 7-balancing circuit board, 8-connecting wire, 9-fixing bolt, 10-balancing device base and 11-communication interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The following detailed description is provided to illustrate specific embodiments of the present invention.
Referring to fig. 1-3, an external battery balancing apparatus provided in an embodiment of the present invention includes a battery box 6, and further includes:
the equalizing device interface 5 is positioned on the battery box 6;
the balancing device comprises a balancing device wire harness 4, and one end of the balancing device wire harness 4 is connected with a balancing device interface 5; and
the battery balancing device 1 is connected with the other end of the balancing device wire harness 4.
In the installation process, the battery equalization device 1 and the battery box 6 are installed separately through the arrangement, a communication interface is arranged on the battery box 6 so as to be connected with the battery equalization device 1, information transmission in the working process is realized, the battery equalization device and the battery box are connected through the equalization device wire harness 4, the length of the equalization device wire harness 4 can be set according to actual needs, an interface is arranged on the battery box 6, a loop connected with the battery cells is arranged in the battery box, the loop can be directly connected with an external equalization instrument for equalization, equalization can be realized without disassembling the machine in the use process, the equalization current of the passive equalization device is large, the number of reserved equalization resistors is large, the equalization current can be increased, a better equalization effect is achieved, equalization is achieved after charging is completed, equalization is achieved again, the voltage difference between the battery cells can be reduced when the static voltage of the battery is recovered, the consistency of the battery is improved, better charging and discharging conditions are provided for the next discharging and charging cycle period, the equalization is carried out on a small number of high-voltage battery cells and low-voltage cells, the equalization device can be used in parallel connection with a plurality of external batteries in different usage modes, and the use of the same battery pack can be realized.
In an embodiment of the present invention, please refer to fig. 2 and fig. 3, the battery balancing apparatus 1 includes a balancing apparatus base 10 and a monitoring unit, the monitoring unit is located in the balancing apparatus base 10 and is detachably connected to the battery box 6.
The monitoring unit includes: the equalizing circuit board 7 is connected with the equalizing device base 10 through a fixing bolt 9;
the communication interface 11 is arranged on the equalizing device base 10, and the communication interface 11 is also detachably connected with the battery box 6; and
and one end of the connecting wire 8 is connected with the balanced circuit board 7, and the other end of the connecting wire 8 is connected with the communication interface 11.
Through the equalization circuit board 7 that sets up, wherein the equalization circuit board 7 has bigger heat radiating area, can be effectively with the heat transfer who produces because increase the electric current in the equalization circuit, reduce the too high risk of local temperature, avoid passive equilibrium in the BMS mainboard, because of not having enough big heat radiating area, can not effectively with the heat transfer who produces because increase the electric current in the equalization circuit, thereby lead to local temperature too high, and can be used to monitor the voltage of each electric core in the battery package, to the electric core output corresponding electric current that needs the equilibrium, and through the communication interface 11 that sets up, as the installation base of equalization device, be used for the installation of whole equalization device, and through the communication interface 11 that sets up, as the communication interface between battery equalization device 1 and battery box 6, be used for the information transmission of equalization device during operation, in the course of work, make equalization circuit board 7 be connected with communication interface 11 through fixing bolt 9, can avoid the during operation to take place to rock.
In an embodiment of the present invention, please refer to fig. 2 and fig. 3, further including: and the radiating fin 3 is connected with the equalizing device base 10, and is positioned on the top of the equalizing device base 10.
Please refer to fig. 3, further comprising: and the heat radiation fan 2 is positioned on the middle part of the heat radiation fin 3, and is communicated with the equalizing device base 10.
Through radiator fan 2 and the fin 3 that sets up, its effect is on transmitting the inside temperature of battery balancing unit 1 to the fin, reduces the inside temperature of battery balancing unit 1, makes balanced circuit board 7 can continuously work in suitable environment to under radiator fan 2's drainage effect, can be effectual with the heat that the equilibrium produced distribute the environment in, reduce the temperature on the fin 3, thereby further reduce the inside temperature of battery balancing unit 1.
It should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "sliding", "rotating", "fixed", "provided", and the like are to be understood broadly, and may be, for example, a welded connection, a bolted connection, or an integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides an external battery balancing unit, includes the battery box, its characterized in that still includes:
an equalizing device interface located on the battery box;
one end of the balancing device wire harness is connected with the balancing device interface; and
and the battery balancing device is connected with the other end of the balancing device wire harness.
2. The external battery balancing device of claim 1, wherein the battery balancing device comprises a balancing device base and a monitoring unit, and the monitoring unit is located in the balancing device base and detachably connected to the battery box.
3. The external battery equalization device according to claim 2, wherein the monitoring unit comprises:
the balanced circuit board is connected with the balanced device base through a fixing bolt;
the communication interface is arranged on the base of the balancing device and is detachably connected with the battery box; and
and one end of the connecting wire is connected with the equalizing circuit board, and the other end of the connecting wire is connected with the communication interface.
4. The external battery equalization device according to claim 3, further comprising: and the radiating fin is connected with the equalizing device base and is positioned on the top of the equalizing device base.
5. The external battery equalization device according to claim 4, further comprising: and the heat radiation fan is positioned on the middle part of the heat radiation fin and is communicated with the equalizing device base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222061012.8U CN218472039U (en) | 2022-08-07 | 2022-08-07 | External battery balancing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222061012.8U CN218472039U (en) | 2022-08-07 | 2022-08-07 | External battery balancing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218472039U true CN218472039U (en) | 2023-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222061012.8U Active CN218472039U (en) | 2022-08-07 | 2022-08-07 | External battery balancing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218472039U (en) |
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2022
- 2022-08-07 CN CN202222061012.8U patent/CN218472039U/en active Active
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