CN210327122U - Lithium battery charger - Google Patents
Lithium battery charger Download PDFInfo
- Publication number
- CN210327122U CN210327122U CN201921626472.2U CN201921626472U CN210327122U CN 210327122 U CN210327122 U CN 210327122U CN 201921626472 U CN201921626472 U CN 201921626472U CN 210327122 U CN210327122 U CN 210327122U
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- inductor
- circuit
- shielding shell
- lithium battery
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Abstract
The utility model discloses a lithium battery charger, including AC-DC circuit and output filter circuit, the input and the alternating current commercial power of AC-DC circuit are connected, its characterized in that: the output filter circuit comprises a common-mode inductor, the common-mode inductor is connected with the output end of the AC-DC circuit, the common-mode inductor comprises a shielding shell and an inductor body arranged in the shielding shell, the inductor body comprises a winding core and an inductor coil, and the inductor coil is wound on the winding core. The common mode inductor with the shielding shell is used for effectively shielding electromagnetic interference generated by the AC-DC circuit, so that the filtering effect of the common mode inductor is better.
Description
Technical Field
The utility model relates to a lithium battery charger.
Background
The existing lithium battery charger comprises a control circuit and a charging circuit, wherein the charging circuit comprises an AC-DC circuit and a pair of charging output terminals for connecting an object to be charged (such as a rechargeable battery), the AC-DC circuit comprises an input rectifying module, a power factor correction module, an IGBT full-bridge inversion module, a high-frequency isolation transformer and an output rectifying module which are sequentially connected, the output end of the AC-DC circuit is further connected with an output filter circuit, and the output end of the output filter circuit is connected with the charging output terminals. The output filter circuit comprises a common mode inductor which is connected with the output end of the AC-DC circuit. In the lithium battery charger, because elements such as a high-frequency isolation transformer in an AC-DC circuit can generate common-mode electromagnetic interference, the electromagnetic interference can influence the stable work of a lithium battery management system, and can also influence the communication stability of the charger and the battery management system, and influence the stability of the output voltage of a charging circuit.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lithium battery charger increases the common mode inductance through the output side that charges the machine and is used for solving current lithium battery charging circuit's electromagnetic interference's problem.
The technical scheme of the utility model is realized like this:
the utility model provides a pair of lithium battery charger, including AC-DC circuit and output filter circuit, the input and the alternating current commercial power of AC-DC circuit are connected, its characterized in that: the output filter circuit comprises a common-mode inductor, the common-mode inductor is connected with the output end of the AC-DC circuit, the common-mode inductor comprises a shielding shell and an inductor body arranged in the shielding shell, the inductor body comprises a winding core and an inductor coil, and the inductor coil is wound on the winding core.
The shielding shell and the inductor body are sealed by pouring sealant.
The inductor comprises an inductor body, wherein an installation space is arranged in the shielding shell, an opening is formed in the top of the installation space, a bottom support is arranged in the installation space, the inductor body is arranged in the installation space, the bottom support supports the inductor body, and the wire outlet end of the inductor coil extends out of the shielding shell from the opening.
The bottom of the shielding shell protrudes outwards and is provided with a plurality of outward flanges, and the outward flanges are provided with a plurality of mounting holes.
Compared with the prior art, the utility model, there is following advantage:
1. the lithium battery charger comprises an AC-DC circuit and an output filter circuit, wherein the input end of the AC-DC circuit is connected with an alternating current mains supply, and the lithium battery charger is characterized in that: the output filter circuit comprises a common-mode inductor, the common-mode inductor is connected with the output end of the AC-DC circuit, the common-mode inductor comprises a shielding shell and an inductor body arranged in the shielding shell, the inductor body comprises a winding core and an inductor coil, and the inductor coil is wound on the winding core. The common mode inductor with the shielding shell is used for effectively shielding electromagnetic interference generated by the AC-DC circuit, so that the filtering effect of the common mode inductor is better.
2. Other advantages of the present invention will be described in detail in the examples section.
Drawings
Fig. 1 is a schematic block diagram of a lithium battery charger according to an embodiment of the present invention;
FIG. 2 is a perspective view of a common mode inductor in a lithium battery charger;
FIG. 3 is a front view of a common mode inductor;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
fig. 5 is an exploded view of a common mode inductor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
As shown in fig. 1 to fig. 5, the present embodiment provides a lithium battery charger, which includes an AC-DC circuit 1 and an output filter circuit 2, wherein an input terminal of the AC-DC circuit 1 is connected to an AC mains, and the lithium battery charger is characterized in that: the output filter circuit 2 comprises a common mode inductor 21, the common mode inductor 21 is connected with the output end of the AC-DC circuit 1, the common mode inductor 21 comprises a shielding shell 31 and an inductor body 32 installed in the shielding shell 31, the inductor body 32 comprises a winding core 321 and an inductor coil 322, and the inductor coil 322 is wound on the winding core 321. The common-mode inductor 21 with the shielding shell 31 is used for effectively shielding electromagnetic interference generated by the AC-DC circuit 1, so that the filtering effect of the common-mode inductor 21 is better.
The AC-DC circuit 1 comprises an input rectification module, a power factor correction module, an IGBT full-bridge inversion module, a high-frequency isolation transformer and an output rectification module which are sequentially connected, and the input end of the output filter circuit 2 is connected with the output end of the output rectification module.
The shielding shell 31 and the inductor body 32 are sealed by a potting adhesive 33. The potting adhesive 33 fixes the shielding shell 31 and the inductor body 32 together, and further increases the shielding effect.
The shielding housing 31 is provided with an installation space 310 therein, the top of the installation space 310 is provided with an opening 311, a bottom support 312 is installed in the installation space 310, the inductor body 32 is installed in the installation space 310, the bottom support 312 supports the bottom of the inductor body 32, and the wire outlet 323 of the inductor coil 322 extends out of the shielding housing 31 from the opening 311. Simple structure and convenient production.
The bottom of the shielding shell 31 is protruded outward with a plurality of flanges 313, and the flanges 313 are provided with a plurality of mounting holes 314. The installation is convenient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (4)
1. A lithium battery charger comprises an AC-DC circuit and an output filter circuit, wherein the input end of the AC-DC circuit is connected with an alternating current commercial power, and the lithium battery charger is characterized in that: the output filter circuit comprises a common-mode inductor, the common-mode inductor is connected with the output end of the AC-DC circuit, the common-mode inductor comprises a shielding shell and an inductor body arranged in the shielding shell, the inductor body comprises a winding core and an inductor coil, and the inductor coil is wound on the winding core.
2. A lithium battery charger as claimed in claim 1, characterized in that: the shielding shell and the inductor body are sealed by pouring sealant.
3. A lithium battery charger as claimed in claim 2, characterized in that: be equipped with installation space in the shielding shell, installation space's top is equipped with the opening, installs the collet in the installation space, and the inductance body is installed in the installation space, and collet bearing inductance body bottom, inductance coil's leading-out terminal stretches out outside the shielding shell from the opening.
4. A lithium battery charger as claimed in claim 3, characterized in that: the bottom of the shielding shell protrudes outwards and is provided with a plurality of outward flanges, and the outward flanges are provided with a plurality of mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626472.2U CN210327122U (en) | 2019-09-27 | 2019-09-27 | Lithium battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626472.2U CN210327122U (en) | 2019-09-27 | 2019-09-27 | Lithium battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210327122U true CN210327122U (en) | 2020-04-14 |
Family
ID=70133539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921626472.2U Active CN210327122U (en) | 2019-09-27 | 2019-09-27 | Lithium battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210327122U (en) |
-
2019
- 2019-09-27 CN CN201921626472.2U patent/CN210327122U/en active Active
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