CN219979635U - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN219979635U CN219979635U CN202320348336.1U CN202320348336U CN219979635U CN 219979635 U CN219979635 U CN 219979635U CN 202320348336 U CN202320348336 U CN 202320348336U CN 219979635 U CN219979635 U CN 219979635U
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- Prior art keywords
- battery
- relay
- electrically connected
- charging
- plug
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- 238000007599 discharging Methods 0.000 claims abstract description 38
- 238000003825 pressing Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000011324 bead Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a battery pack, which comprises a plurality of cascaded battery modules, a shell and an electric device mounting plate, wherein the cascaded battery modules, the shell and the electric device mounting plate are arranged in parallel; the electric device mounting board is provided with a battery management system, a charging plug-in unit, a discharging plug-in unit, a charging relay, a discharging relay and a fuse; the first positive electrode end of the battery module is connected with one end of the charging relay through a fuse, and the second positive electrode end of the battery module is connected with one end of the discharging relay through the fuse; the other end of the charging relay is connected with a charging plug-in unit, and the other end of the discharging relay is connected with a discharging plug-in unit; the charging relay and the discharging relay are connected with the battery management system; an antenna is mounted on the front panel of the housing and electrically connected with the power management system. The battery pack controls the charge and discharge circuit through the battery management system to prevent the battery from being excessively charged and discharged, so that the utilization rate of the echelon battery module is improved; and the antenna is used for uploading the battery data acquired by the battery management system to the terminal, so that the time monitoring of the battery state is realized.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery pack.
Background
The retired power battery finally forms a new battery pack through links such as testing, echelon screening, recombination and the like, and can be used for echelon utilization in the fields with relatively good operation conditions such as low-speed electric vehicles, standby power supplies, electric power energy storage and the like and lower requirements on battery performance.
For a battery pack formed by the cascade utilization of retired power batteries, the safety problem is mainly in the charge and discharge links, if state monitoring and control are not applied in the charge and discharge process, the conditions of battery overcharge, overdischarge, overcurrent and the like can be easily caused, and the safety performance of the battery pack cannot be ensured.
Disclosure of Invention
The present inventors have proposed a battery pack for the above-mentioned problems and technical needs, and the technical scheme of the present utility model is as follows:
a battery pack comprises a plurality of battery modules, a shell and an electric device mounting plate, wherein the battery modules, the shell and the electric device mounting plate are connected in series and are arranged in parallel; the battery module is arranged in the shell, and the electric device mounting plate is fixedly arranged above the battery module; the electric device mounting board is provided with a battery management system, a charging plug-in unit, a discharging plug-in unit, a charging relay, a discharging relay and a fuse; the first positive ends of the plurality of parallel battery modules are electrically connected with one end of the charging relay through the fuse, and the second positive ends are electrically connected with one end of the discharging relay through the fuse; the other end of the charging relay is electrically connected with the charging plug-in unit, and the other end of the discharging relay is electrically connected with the discharging plug-in unit; the charging relay and the discharging relay are electrically connected with the battery management system; an antenna is mounted on the front panel of the housing and electrically connected to the battery management system.
The battery module comprises an electric device mounting plate, a charging plug-in unit, a plurality of parallel battery modules, a current divider, a discharging plug-in unit, a charging plug-in unit, a discharging plug-in unit and a charging plug-in unit.
The technical scheme is that the electric device mounting plate is also provided with a pre-charging resistor and a pre-charging control relay; one end of the pre-charging control relay is electrically connected with the fuse, and the other end of the pre-charging control relay is electrically connected with the discharging plug-in; the pre-charging resistor is connected with the pre-charging control relay in series; the pre-charge control relay is electrically connected with the battery management system.
The charging and discharging device comprises a shell, wherein a front panel of the shell is provided with a charging input port and a discharging output port which are matched with a charging plug-in unit and a discharging plug-in unit respectively.
The further technical scheme is that a DC power supply is arranged on the electric device mounting board and is electrically connected with the battery management system and used for supplying power to the battery management system.
The further technical scheme is that a communication plug-in unit is arranged on the front panel of the shell.
The battery pack further comprises an upper cover, wherein the upper cover is arranged at the top of the shell, and the upper cover is detachably connected with the shell.
The battery pack further comprises a heat dissipation mechanism, wherein the heat dissipation mechanism is arranged at the bottom in the shell and is connected with the bottom surface of the battery module.
The battery module comprises a fixing frame, a battery cell group and an insulating plate fixedly arranged on the periphery of the battery cell group, wherein the battery cell group is arranged in the fixing frame; the battery cell group comprises a plurality of echelon battery cells which are arranged in parallel, and the plurality of the echelon battery cells which are arranged in parallel are electrically connected through a flow guide row.
The battery module further comprises a pressing bar and an upper insulating plate; the pressing strip is arranged above the battery cell group and is used for pressing a plurality of echelon battery cells which are arranged in parallel; the upper insulating plate is fixed above the pressing bar.
The beneficial technical effects of the utility model are as follows:
the utility model discloses a battery pack, which controls a charge and discharge circuit through a battery management system, and uploads battery data acquired by the battery management system to a terminal by utilizing an antenna, so that the time monitoring of a battery state by a background is realized, the overcharge and discharge of a battery are prevented, and the safety performance of the battery pack is ensured; meanwhile, the battery pack is simple in integral structure and convenient to install, and the battery module is effectively protected by adopting the cooperation of the shell and the detachable upper cover.
Drawings
Fig. 1 is a schematic view of the internal structure of a battery pack according to the present utility model.
Fig. 2 is a schematic structural view of the electric device mounting board of the present utility model.
Fig. 3 is a schematic view of the overall structure of the battery pack of the present utility model.
Fig. 4 is a schematic view of the internal structure of the battery module of the present utility model in a ladder shape.
In the figure: 1. a battery module; 2. a housing; 3. an electrical device mounting plate; 4. an upper cover; 5. fixing the ground feet; 6. a charging inlet; 7. a discharge outlet; 8. a first communication plug-in; 9. a second communication plug-in; 10. an antenna; 101. a cell group; 102. a fixing frame; 103. an insulating plate; 104. a guide row; 105. pressing strips; 106. an upper insulating plate; 301. a battery management system; 302. a DC power supply; 303. a shunt; 304. a fuse; 305. a discharge relay; 306. a charging relay; 307. pre-charging a resistor; 308. a precharge control relay; 309. a charging plug-in; 310. a discharge insert.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings.
The utility model provides a battery pack, which mainly comprises a plurality of battery modules 1, a shell 2 and an electric device mounting plate 3 which are connected in series and are arranged in parallel as shown in fig. 1.
Specifically, a plurality of battery modules 1 arranged in parallel in series are installed in the housing 2, and preferably bolts are used to fix the battery modules 1 in the housing 2; the electric device mounting plate 3 is fixedly arranged above the battery module 1, and the electric device mounting plate 3 is fixed on the shell 2; the battery management system 301 is mounted on the electric device mounting board 3; an antenna 10 is mounted on the front panel of the housing 2, and the antenna 10 is electrically connected to the battery management system 301.
As shown in fig. 2, the electrical device mounting board 3 is further mounted with a charging plug 309, a discharging plug 310, a charging relay 306, a discharging relay 305, and a fuse 304; the first positive ends of the plurality of parallel battery modules 1 connected in series are electrically connected with one end of a charging relay 306 through a fuse 304, and the second positive ends are electrically connected with one end of a discharging relay 305 through the fuse 304; the other end of the charging relay 306 is electrically connected with a charging plug 309, and the other end of the discharging relay 305 is electrically connected with a discharging plug 310; the charge relay 306 and the discharge relay 305 are electrically connected to the battery management system 301. The fuse 304 blows the fuse when the circuit is over-current, thereby playing a role of protecting the circuit; the discharging relay 305 is used for controlling current output, the charging relay 306 is used for controlling current input, and the discharging relay and the charging relay all play a role of switching; the battery management system 301 controls the charge and discharge circuit by controlling the on-off of the charge relay 306 and the discharge relay 305, and transmits the collected battery data to the terminal through the antenna 310, so as to realize the monitoring of the battery state by the background, thereby preventing the overcharge and discharge of the battery and ensuring the safety performance of the battery pack.
Also mounted on the electrical device mounting board 3 are a shunt 303, a pre-charge group 307, a pre-charge control relay 308 and a DC power supply 302.
The first negative electrode terminals of the plurality of parallel battery modules 1 connected in series are electrically connected to the charging plug 309 through the current divider 303, and the second negative electrode terminals are electrically connected to the discharging plug 310 through the current divider 303. The shunt 303 is electrically connected to the battery management system 301, and the battery management system 301 may calculate a current value by collecting the current passing through the shunt.
One end of the pre-charge control relay 308 is electrically connected with the fuse 304, and the other end is electrically connected with the discharge plug-in 310; the precharge resistor 307 and the precharge control relay 308 are connected in series; the precharge control relay 308 is electrically connected to the battery management system 301. The precharge resistor 307 has a current reducing function, and when discharging, the current firstly passes through the precharge resistor 307 and then becomes smaller, at the moment, the discharge relay 305 is sucked, the discharge relay 305 is protected by the small current, and then the large current passes through; the precharge control relay 308 is used to control the precharge circuit, and functions as a switch, which is controlled on and off by the battery management system 301, and also prevents the overcurrent condition of the circuit.
The DC power supply 302 is electrically connected to the battery management system 301 for powering the battery management system 301.
As shown in fig. 3, the front panel of the housing 2 is further provided with a charging input port 6, a discharging output port 7, and a communication plug-in. Specifically, the charging plug 309 and the discharging plug 310 on the electrical device mounting board 3 are respectively matched in size and position with the charging input port 6 and the discharging output port 7.
Preferably, the communication cards comprise a first communication card 8 and a second communication card 9. Alternatively, the first communication plug-in 8 may be used for charging device communication and the second communication plug-in 9 may be used for load side communication.
Optionally, fixed feet 5 are also arranged at the bottom of the periphery of the shell.
As shown in fig. 1, the battery pack further includes an upper cover 4, the upper cover 4 is covered on the top of the housing 2, and the upper cover 4 is detachably connected with the housing 2.
Preferably, the battery pack further includes a heat dissipation mechanism provided at the bottom inside the case 2 and connected to the bottom surface of the battery module 1. Specifically, the heat dissipation mechanism may include a heat dissipation fin and a heat conduction bottom plate, where the heat dissipation fin is fixed on the top surface of the heat conduction bottom plate, and the top surface of the heat dissipation fin is connected with the bottom surface of the battery module 1, so as to connect the heat dissipation mechanism with the battery module 1 to dissipate heat of the battery module 1; the radiating fin and the heat conducting bottom plate are preferably made of steel-aluminum composite materials, so that the radiating mechanism not only has the high-strength characteristic of a steel structure, but also improves the radiating effect by means of high heat conductivity of aluminum materials.
As shown in fig. 4, the battery module 1 includes a fixing frame 102, a battery cell group 101 and an insulating plate 103 fixedly arranged around the battery cell group, wherein the battery cell group 101 is installed in the fixing frame 102; the battery cell group comprises a plurality of echelon battery cells which are arranged in parallel, and the plurality of the echelon battery cells which are arranged in parallel are electrically connected through the flow guide row 104. Preferably, the diversion row is fixedly connected with the echelon cells in a laser welding mode, so that the electric connection between the echelon cells is realized.
The battery module further comprises a pressing bar 105 and an upper insulating plate 106; the pressing bar 105 is arranged above the battery cell group 101 and is used for pressing a plurality of parallel echelon battery cells; the upper insulating plate 106 is fixed above the pressing bar 105, and preferably, the upper insulating plate 106 is fixed on the pressing bar 105 by using a screw, and the pressing bar 105 is fixed on the fixing frame 102.
Preferably, the number of the battery modules 1 is at least 3.
The above is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present utility model are deemed to be included within the scope of the present utility model.
Claims (10)
1. The battery pack is characterized by comprising a plurality of battery modules, a shell and an electric device mounting plate which are connected in series and are arranged in parallel; the battery module is arranged in the shell, and the electric device mounting plate is fixedly arranged above the battery module; the electric device mounting board is provided with a battery management system, a charging plug-in unit, a discharging plug-in unit, a charging relay, a discharging relay and a fuse; the first positive electrode ends of the plurality of battery modules which are connected in series and arranged in parallel are electrically connected with one end of the charging relay through the fuse, and the second positive electrode ends are electrically connected with one end of the discharging relay through the fuse; the other end of the charging relay is electrically connected with the charging plug-in unit, and the other end of the discharging relay is electrically connected with the discharging plug-in unit; the charging relay and the discharging relay are electrically connected with the battery management system; an antenna is mounted on the front panel of the housing and electrically connected with the battery management system.
2. The battery pack according to claim 1, wherein the electric device mounting board is further provided with a current divider, a first negative electrode terminal of the plurality of battery modules arranged in parallel in series is electrically connected to the charging plug-in unit through the current divider, and a second negative electrode terminal is electrically connected to the discharging plug-in unit through the current divider.
3. The battery pack of claim 1, wherein the electrical device mounting plate further mounts thereon a pre-charge resistor and a pre-charge control relay; one end of the pre-charging control relay is electrically connected with the fuse, and the other end of the pre-charging control relay is electrically connected with the discharging plug-in; the pre-charging resistor and the pre-charging control relay are connected in series; the pre-charge control relay is electrically connected with the battery management system.
4. The battery pack of claim 1, wherein the front panel of the housing is provided with a charge input port and a discharge output port that are mated with the charge plug-in and discharge plug-in, respectively.
5. The battery pack of claim 1, wherein the electrical device mounting board has a DC power source mounted thereon, the DC power source being electrically connected to the battery management system for powering the battery management system.
6. The battery pack of any one of claims 1-5, wherein a communication plug is provided on the front panel of the housing.
7. The battery pack of any one of claims 1-5, further comprising an upper cover disposed on top of the housing, the upper cover being removably coupled to the housing.
8. The battery pack according to any one of claims 1 to 5, further comprising a heat dissipation mechanism provided at the bottom inside the case and connected to the bottom surface of the battery module.
9. The battery pack according to any one of claims 1 to 5, wherein the battery module comprises a fixing frame, a battery cell group and an insulating plate fixedly arranged around the battery cell group, and the battery cell group is arranged in the fixing frame; the battery cell group comprises a plurality of echelon battery cells which are arranged in parallel, and the plurality of the echelon battery cells which are arranged in parallel are electrically connected through a flow guide row.
10. The battery pack according to claim 9, wherein the battery module further comprises a bead and an upper insulating plate; the pressing strip is arranged above the battery cell group and is used for pressing the plurality of echelon battery cells which are arranged in parallel; the upper insulating plate is fixed above the pressing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348336.1U CN219979635U (en) | 2023-03-01 | 2023-03-01 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348336.1U CN219979635U (en) | 2023-03-01 | 2023-03-01 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219979635U true CN219979635U (en) | 2023-11-07 |
Family
ID=88590149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320348336.1U Active CN219979635U (en) | 2023-03-01 | 2023-03-01 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219979635U (en) |
-
2023
- 2023-03-01 CN CN202320348336.1U patent/CN219979635U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A battery pack Granted publication date: 20231107 Pledgee: Jiangsu Jiangyin Rural Commercial Bank Co.,Ltd. high tech Zone sub branch Pledgor: Jiangsu Yuechang New Energy Technology Co.,Ltd. Registration number: Y2024980001554 |