BMS network transformer
By setting heat dissipation holes and embedding a shielding mesh on the BMS network transformer housing, combined with a U-shaped groove structure and injection molding process to fix the pins, the problems of heat dissipation and electromagnetic shielding are solved, achieving stable operation and dust prevention, and extending the equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-10
AI Technical Summary
The BMS network transformer suffers from significant heat dissipation issues during operation, leading to excessively high internal temperatures that affect performance and lifespan. Additionally, the opening of heat dissipation holes compromises electromagnetic shielding and easily introduces dust, causing equipment malfunctions.
Design a BMS network transformer with heat dissipation holes and an embedded shielding mesh on the outer shell. Combined with a U-shaped groove structure, it enhances heat dissipation and blocks electromagnetic radiation and dust. The pins are fixed by injection molding to improve stability.
It effectively improves heat dissipation capacity, while also providing electromagnetic shielding, preventing dust from entering, ensuring stable equipment operation, and extending service life.
Smart Images
Figure CN224110093U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer technical field especially relates to a BMS network transformer. BACKGROUND
[0002] The BMS network transformer plays an important role in the battery management system, is used for realizing signal isolation and transmission between different circuits in the battery management system, ensures that signals are not disturbed and stably transmit. Generally, it has characteristics such as high reliability, low loss, good common mode rejection ratio, can work in a wide temperature range and complex electromagnetic environment, thereby ensuring that the battery system is safely operated and the communication is stable and real. With the global energy conversion and the vigorous development of China's new energy automobile industry and the vigorous promotion of electrification, and the recognition of new energy vehicles by consumers, the BMS system as the core component of the power battery, the requirement of network transformer is also higher and higher.
[0003] At present, the BMS network transformer faces many problems in the operation process. Among them, the heat dissipation problem is more prominent, the transformer generates a large amount of heat when working, which leads to the temperature of the equipment inside being too high, and then affects the performance and service life of the transformer. In order to improve the heat dissipation effect and avoid the temperature of the equipment inside being too high, some designs will increase the heat dissipation hole, but this brings new problems. The opening of the heat dissipation hole will damage the original integrity of the shell, resulting in a big discount of the electromagnetic shielding effect, and the external electromagnetic interference is more likely to invade, affecting the normal operation of the equipment. At the same time, although the heat dissipation hole can promote air convection to assist heat dissipation, it also opens a channel for dust to enter the equipment inside. Even if there is a shell protection, dust may still enter and accumulate in the equipment inside, which will cause damage to electronic components and cause failure in the long run.
[0004] Therefore, it is necessary to propose a new technical scheme to solve the above problems. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a technical scheme that can solve the above problems.
[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a BMS network transformer, comprising a shell with a lower end opening, a plurality of pins are arranged on the side end of the shell;
[0007] A coil is arranged in the shell, the coil is electrically connected with the pins, and the pins are electrically connected with an external circuit.
[0008] A heat dissipation hole is arranged on the shell, and a shielding mesh cover is embedded in the shell, and the shielding mesh cover is used for covering the heat dissipation hole.
[0009] As a further scheme of the utility model: the shell upper end is provided with a back-shaped groove extending into the shell frame, and the shielding net cover is embedded in the back-shaped groove.
[0010] As a further scheme of the utility model: the heat dissipation holes are provided with a plurality of holes and are distributed on each side of the shell.
[0011] As a further scheme of the utility model: the shell is further provided with an assembly block, the assembly block is provided with an assembly groove, and the coil is fixed in the assembly groove by adhesive.
[0012] As a further scheme of the utility model: the pin is integrally formed on the shell by injection molding after being embedded, the pin is provided with a welding part protruding from the shell bottom frame, and the coil is provided with a lead-out wire welded with the welding part.
[0013] As a further scheme of the utility model: the welding part is provided with a winding notch, and the lead-out wire is wound on the winding notch.
[0014] Compared with the prior art, the beneficial effects of the technical scheme are that: during operation, the heat dissipation holes provided on the shell can promote air convection and enhance the heat dissipation effect, so that the heat generated during operation can be quickly discharged from the shell, thereby avoiding the influence of the high temperature inside the equipment on the service life; meanwhile, the shielding net cover is embedded in the shell to cover the heat dissipation holes, the shielding net cover can effectively block electromagnetic radiation, and make up for the weakening of the electromagnetic shielding effect caused by the opening of the heat dissipation holes, so that the heat dissipation capacity of the transformer is significantly improved, and the electromagnetic shielding effect is compatible, so that the equipment can stably operate.
[0015] Secondly, the fine structure of the shielding net cover can also effectively block dust, prevent dust from entering the shell through the heat dissipation holes, effectively avoid the accumulation of dust in the shell, and prevent dust from causing damage to the equipment and causing failure.
[0016] The additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0018] Figure 1It is the overall structure schematic view of the utility model;
[0019] Figure 2 It is the structure schematic view of the utility model after overall overturning;
[0020] Figure 3 It is the section structure schematic view of the utility model;
[0021] Figure 4 It is the shell structure schematic view of the utility model;
[0022] Figure 5 It is the structure schematic view of the utility model after shell overturning;
[0023] The corresponding label explanation in the drawing is as follows:
[0024] 1, shell; 11, heat dissipation hole; 12, back type groove; 2, pin; 21, welding part; 22, winding notch; 3, coil; 31, lead-out wire; 4, shielding mesh cover; 5, assembly block; 51, assembly groove. Specific implementation
[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0026] Please refer to Figures 1-5 A BMS network transformer, comprising a shell 1 with a lower end opening, the shell 1 side end is equipped with a plurality of pins 2;
[0027] The shell 1 is equipped with a coil 3, the coil 3 is electrically connected with the pin 2, and the pin 2 is electrically connected with the external circuit;
[0028] The shell 1 is provided with a heat dissipation hole 11, and the shell 1 is embedded with a shielding mesh cover 4, and the shielding mesh cover 4 is used for covering the heat dissipation hole 11.
[0029] In the technical scheme of the utility model, the coil 3 is composed of a high magnetic permeability magnetic ring and an enameled wire wound on the magnetic ring, and the coil 3 is electrically connected with the pin 2 at the side end of the shell 1, and is electrically connected with the external circuit through the pin 2, to form a complete transformer acting in the circuit;
[0030] During operation, the air convection can be promoted through the heat dissipation holes 11 opened on the shell 1, the heat dissipation effect is enhanced, the heat generated during operation can be quickly discharged from the inside of the shell 1, so as to avoid that the temperature inside the equipment is too high to affect the service life; at the same time, in order to avoid that the opening of the heat dissipation holes 11 destroys the integrity of the shell 1, the electromagnetic shielding effect provided by the shell 1 is affected, and then the equipment is easily affected by electromagnetic interference; the shielding mesh cover 4 is embedded in the shell 1 to cover the heat dissipation holes 11, the shielding mesh cover 4 can effectively block the electromagnetic radiation, make up for the weakening of the electromagnetic shielding effect caused by the opening of the heat dissipation holes 11, so as to significantly improve the heat dissipation capacity of the transformer while compatible with the electromagnetic shielding effect, so that the equipment can stably operate;
[0031] Secondly, the fine structure of the shielding mesh cover 4 can also effectively block dust, prevent dust from entering the inside of the shell 1 through the heat dissipation holes 11, effectively avoid the accumulation of dust inside the shell 1, prevent the damage of dust to the inside of the equipment and cause failure;
[0032] Further, the shielding mesh cover 4 is made of copper material, which can effectively conduct heat and absorb heat inside the shell 1, and then the heat is carried away by the airflow in the heat dissipation holes 11, so as to further improve the heat dissipation capacity of the equipment.
[0033] In this embodiment, referring to Figure 1 , Figure 3 and Figure 4 , it is further proposed that the shell 1 is provided with a back-shaped groove 12 extending into the frame of the shell 1, and the shielding mesh cover 4 is embedded in the back-shaped groove 12.
[0034] Specifically, the shielding mesh cover 4 is embedded in the back-shaped groove 12, so that the shielding mesh cover 4 wraps the shell 1 with the shape of the shell 1, which can improve the electromagnetic shielding effect of the shielding mesh cover 4 and make the equipment run more stably; at the same time, when embedding the shielding mesh cover 4, glue can be applied on the shielding mesh cover 4, so that the shielding mesh cover 4 is fixed after embedding.
[0035] In this embodiment, referring to Figure 4 , it is further proposed that the heat dissipation holes 11 are provided in plurality and distributed on each side of the shell 1.
[0036] Specifically, the design of the plurality of heat dissipation holes 11 can maximize the speed of air passing through the shell 1, so that the internal heat is carried out by the airflow more quickly, and the internal temperature is kept stable.
[0037] In this embodiment, referring to Figure 2 , Figure 3 and Figure 5Further, the shell 1 is internally provided with an assembling block 5, the assembling block 5 is provided with an assembling groove 51, and the coil 3 is fixed in the assembling groove 51 by gluing.
[0038] The coil 3 is fixed in the assembling groove of the assembling block 5 by gluing, the glue overflow can be prevented by the assembling block 5, so that the heat dissipation holes 11 are not blocked by the glue, and the heat dissipation effect is not affected, that is, the coil 3 is placed in the assembling groove 51, then the glue (preferably silicone glue) is injected into the assembling groove 51, and the position of the coil 3 is fixed after the glue is cured.
[0039] In addition, referring to Figure 2 and Figure 5 , the pin 2 is integrally formed on the shell 1 by the injection molding process after being embedded, the pin 2 is provided with a welding part 21 protruding from the bottom frame of the shell 1, and the coil 3 is provided with a lead-out wire 31 welded and fixed with the welding part 21.
[0040] Specifically, the pin 2 is integrally formed on the shell 1 by the injection molding process after being embedded, so that the overall strength is improved, and the pin 2 is prevented from falling by accident, and the welding part 21 protruding from the pin 2 is convenient for the connection and fixation of the lead-out wire 31 of the coil 3.
[0041] Further, the welding part 21 is formed with a winding notch 22, and the lead-out wire 31 is wound on the winding notch 22; the lead-out wire 31 can be wound on the winding notch 22 first, so as to facilitate welding, prevent the lead-out wire 31 from falling off during welding, cause the welding to be not firm, and ensure the connection stability.
[0042] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.
Claims
1. A BMS network transformer, characterized in that, Including the shell (1) with lower end opening, the shell (1) side end is equipped with several pins (2); The shell (1) is equipped with coil (3) inside, the coil (3) is electrically connected with pin (2), the pin (2) is electrically connected with external circuit; The shell (1) is opened with heat dissipation hole (11), the shell (1) is embedded with shielding mesh cover (4) inside, the shielding mesh cover (4) is used to cover heat dissipation hole (11).
2. The BMS network transformer of claim 1, wherein, The shell (1) upper end is opened with back type slot (12) extending to the frame inside shell (1), the shielding mesh cover (4) is embedded inside back type slot (12).
3. The BMS network transformer of claim 2, wherein, The heat dissipation hole (11) is opened with multiple, and is distributed on each side of shell (1).
4. The BMS network transformer of claim 3, wherein, The shell (1) inside is also provided with assembly block (5), the assembly block (5) is opened with assembly groove (51) on it, the coil (3) is fixed in assembly groove (51) inside through glue joint.
5. The BMS network transformer of claim 1, wherein, The pin (2) is integrally formed on the shell (1) through injection molding process after pre-buried, and the pin (2) is provided with welding part (21) protruding from the bottom frame of the shell (1), and the coil (3) is provided with lead wire (31) welded with the welding part (21).
6. The BMS network transformer of claim 5, wherein, The welding part (21) is formed with winding notch (22), and the lead wire (31) is wound on the winding notch (22).