WO2019227569A1 - Micro power supply management module - Google Patents

Abstract

Disclosed is a micro power supply management module, comprising a frame and a diode chip, wherein a left portion of the frame is provided with a first electrode terminal and a right portion thereof is provided with a second electrode terminal; the diode chip is provided between the first electrode terminal and the second electrode terminal, and the diode chip is provided with a P junction and an N junction, the N junction of the diode chip is electrically connected to the second electrode terminal, and the P junction of the diode chip is electrically connected to the first electrode terminal by means of a jumper wire; the diode chip is packaged on the frame by means of a plastic packaging body, and the frame is provided with a first bus bar lead-out hole and a second bus bar lead-out hole; and the first bus bar lead-out hole is provided between the first electrode terminal and the plastic packaging body, and the second bus bar lead-out hole is provided between the second electrode terminal and the plastic packaging body. The present invention is simple in structure and has the characteristics of auxiliary lead-in and lead-out of a solar bus bar, and at the same time, the problems that the diode chip has a high temperature increase and is easily damaged are solved.

Description

Mini Power Management Module Technical field

The invention relates to the technical field of photovoltaic accessories, in particular to a miniature power management module.

Background technique

Solar energy is a renewable resource. Photovoltaic modules are widely used in solar power generation, and photovoltaic junction boxes are used to interconnect photovoltaic modules with external power modules and output the power of photovoltaic modules to the outside. When the internal battery of the photovoltaic module appears to be cracked or blocked by shadows to generate a hot spot effect, the Schottky diode assembled in the photovoltaic module junction box acts as a bypass protection device for the photovoltaic module, thereby ensuring the normal operation of the photovoltaic module.

Most photovoltaic modules on the market are single-glass modules with glass on the front, photovoltaic cells in the middle, and a backplane structure. Only the front side can receive solar energy for charging. Its junction box generally uses an integrated junction box. With the technological innovation, double-glass double-sided power generation modules are gradually promoted on the market. The front and back sides are both glass. The use of photovoltaic cells in the middle can convert solar light into electricity. At present, the mainstream method is to install a three-piece junction box on the back of the module. However, the three-junction junction box on the market now takes into consideration the reasons for the heat dissipation of the diode. When ensuring sufficient heat dissipation space, the box size is relatively large. The hot spot effect of the double-glass double-sided power generation module causes serious power consumption of the double-glass double-sided power module. The general solution now is to increase the glass size of the double-glass double-sided power generation module, so as to ensure that the junction box is large enough to install the control without blocking the back battery. Therefore, the prior art has the following defects: the existing diode chip is inserted on the conductor through soldering or through auxiliary components, and heat is dissipated through the pins of the diode chip, resulting in a high temperature rise of the diode chip and easy damage.

Summary of the Invention

Aiming at the shortcomings of the prior art, the object of the present invention is to provide a miniature power management module with a simple structure, which has the characteristics of assisting the introduction and extraction of solar bus belts. problem.

In order to achieve the above object, the technical solution adopted by the present invention is as follows: a miniature power management module including a frame and a diode chip, a first electrode terminal is provided at a left portion of the frame, and a second electrode terminal is provided at a right portion; The diode chip is disposed between a first electrode terminal and a second electrode terminal. The diode chip has a P junction and an N junction. The N junction of the diode chip is electrically connected to the second electrode terminal. The P junction of the diode chip passes through The jumper wire is electrically connected to the first electrode terminal; the diode chip is packaged on the frame through a plastic package, and the frame is provided with a first bus bar lead-out hole and a second bus bar lead-out hole; wherein the first bus bar The lead-out hole is provided between the first electrode terminal and the plastic package, and the second bus-belt lead-out hole is provided between the second electrode terminal and the plastic package.

As a preferred solution, one side of the first electrode terminal is provided with a connecting slot, and the other side is stepped. The second electrode terminal has the same structure as the first electrode terminal, and is the same as the first electrode. The terminals are arranged symmetrically,

As a preferred solution, the frame is a long flat structure.

As a preferred solution, the frame is made of metal copper.

As a preferred solution, the plastic package body has a hexagonal structure, and the first electrode terminal and the second electrode terminal are embedded in the plastic package body by an embedded method and the plastic package body is separated into an upper plastic package portion with a trapezoidal cross section and The lower plastic sealing section with an inverted trapezoidal cross section; wherein the slope of the lower plastic sealing section with an inverted trapezoidal waist is the auxiliary guide inclined plane.

As a preferred solution, an included angle formed by the auxiliary guide slope and the frame is 30 ° to 60 °.

As a preferred solution, the plastic package is made of epoxy resin material.

As a preferred solution, the diode chip is a Schottky diode chip.

As a preferred solution, the jumper is made of metal copper.

As a preferred solution, the miniature power management module is disposed in an ultra-narrow photovoltaic junction box.

Compared with the prior art, the present invention has the beneficial effects that the structure of the present invention is simple and has the characteristics of assisting in and out of the solar bus belt, and simultaneously solves the problem of high temperature rise of the diode chip and easy damage.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a miniature power management module in the present invention;

2 is a top view of a miniature power management module in the present invention;

3 is a front view of a miniature power management module in the present invention;

4 is an internal view of a package body of a micro power management module according to the present invention;

5 is a front view of an ultra-narrow photovoltaic junction box body in the present invention;

6 is a top view of an ultra-narrow photovoltaic junction box body in the present invention;

7 is a bottom view of the ultra-narrow photovoltaic junction box body in the present invention;

FIG. 8 is an exploded view of an ultra-narrow photovoltaic junction box with a miniature power management module in the present invention.

Detailed ways

The present invention is further described below with reference to specific embodiments. The following embodiments are only used to explain the technical solution of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

Example 1:

As shown in FIGS. 1 to 4, a miniature power management module includes a frame and a diode chip 11. A first electrode terminal 12 is provided on a left portion of the frame, and a second electrode terminal 13 is provided on a right portion. The diode chip 11 is provided. The diode chip 11 is provided between the first electrode terminal 12 and the second electrode terminal 13. The diode chip 11 has a P junction and an N junction. The N junction of the diode chip 11 is electrically connected to the second electrode terminal 13. The P junction is electrically connected to the first electrode terminal 12 through a jumper 15; the diode chip 11 is packaged on a frame through a plastic package 14, and the frame is provided with a first busbar lead-out hole 16 and a second busbelt lead-out hole. 17; wherein the first busbar lead-out hole 16 is provided between the first electrode terminal 12 and the plastic package 14, and the second busbelt lead-out hole 17 is provided between the second electrode terminal 13 and the plastic package 14.

Preferably, one side of the first electrode terminal 12 is provided with a connecting slot 18 and the other side is stepped. The second electrode terminal 13 has the same structure as the first electrode terminal 12 and is the same as the first electrode terminal 12. The electrode terminals 12 are arranged symmetrically. The electrode terminal is used for connection with the solar bus belt and the cable 212, and the card slot 18 is used for fixed connection with the ultra-narrow photovoltaic junction box body 2.

Preferably, the frame is a long flat structure, and the frame is made of metal copper. Adopting a long flat structure can greatly reduce the size of the micro power management module 1 while ensuring heat dissipation.

Preferably, the plastic package body 14 has a hexagonal structure, and the first electrode terminal 12 and the second electrode terminal 13 are embedded in the plastic package body 14 in an embedded manner and divide the plastic package body 14 into a trapezoidal section. The plastic sealing portion 141 and the lower plastic sealing portion 142 having an inverted trapezoidal cross-section; wherein the lower plastic sealing portion 142 has an inverted trapezoidal cross-section and the inclined plane on which the waist is located is an auxiliary guiding inclined plane 143; an angle formed by the auxiliary guiding inclined plane 143 and the frame It is 30 ° to 60 °. The auxiliary guide inclined surface 143 can better complete the introduction and extraction of the solar confluence zone.

Preferably, the plastic packaging body 14 is made of epoxy resin material, which has good plastic packaging performance and long service life.

Preferably, the diode chip 11 is a Schottky diode chip.

Preferably, the jumper 15 is made of metallic copper.

Preferably, the miniature power management module 1 is disposed in an ultra-narrow photovoltaic junction box body 2.

The miniature power management module 1 of this embodiment not only generates less heat, dissipates heat better, and is less prone to melting and thermal damage.

Example 2:

As shown in FIGS. 5 to 7, an ultra-narrow photovoltaic junction box body includes a box body 24 and a box cover 25. The box cover 25 is fixedly disposed on the top of the box body 24; a bus is provided on the bottom of the box body 24. With a lead-in port 26, a guide boss 27 is provided in the middle of the bus-port inlet 26; the guide boss 27 and the two ends of the bus-port inlet 26 respectively form a first introduction channel 28 and a second introduction channel 29, wherein The first introduction channel 28 and the second introduction channel 29 are provided along the introduction direction with a first installation hole 210 and a second installation hole 211 through which the busbar passes.

Preferably, the cross section of the guide protrusion 27 is an inverted triangle, wherein the surfaces of the two waists of the inverted triangle are the first guide slope 214 and the second guide slope 215 of the guide protrusion 27; the first introduction channel 28 is formed by the first guide slope 214 and the end of the bus inlet 26; the second introduction channel 29 is formed by the second guide slope 215 and the end of the bus inlet 26, and is structured with the first introduction channel 28 Identical and symmetrical settings. Specifically, the structure provided with the guide protrusion 27 can prevent a short circuit, and the use of the guide slope and the combination with the auxiliary guide slope 143 of the plastic body 14 can better complete the introduction and extraction of the solar bus.

Preferably, a diameter of the first mounting hole 210 is larger than a diameter of the second mounting hole 211. Wherein, the position of the second mounting hole 211 is consistent with the position of the bus bar lead-out hole.

Preferably, the bottom of the box body 24 is provided with a connected filling hole 216 for filling the potting glue.

Preferably, a demolding hole 217 is provided at the bottom of the box body 24 to facilitate demolding of the box body 24.

Preferably, a buckle for fixing the micro power management module 1 is provided inside the box body 24 for fixing the micro power management module 1.

Preferably, one end of the box body 24 is provided with a cable 212 to receive the fastening channel, and the cable line 212 is provided in the corresponding box body 24 by a pressing block 213; one end of the cable line 212 is located in the corresponding box body 24 The other end extends outside the corresponding box body 24.

Preferably, the right end of the cable 212 of the box body 24 is the positive box body 21 is connected to the corresponding micro power management module 1, and the cable line 212 extends to the left outside the positive box body 21; the box body 24 The left end of the cable 212 which is the negative electrode box body 23 is connected to the corresponding micro power management module 1, and the cable line 212 extends to the right outside the negative electrode box body 23. Among them, the cable 212 is connected to the electrode terminal by an intermediate frequency welding method. Such a welding method is stronger and better in heat dissipation.

The junction box body of this embodiment has the characteristics of being small in size and suitable for a double-glass double-sided power generation module, and at the same time, it is easy to operate when introducing and pulling out a solar bus belt to prevent a short circuit.

Example 3:

As shown in Figures 1 to 8, an ultra-narrow photovoltaic junction box with a miniature power management module, including

Ultra-narrow photovoltaic junction box body, the ultra-narrow photovoltaic junction box body includes a positive case 21, an intermediate case 22, and a negative case 23, and the positive case 21, the intermediate case 22, and the negative case 23 each include a case The body 24 and the box cover 25 are fixedly disposed on the top of the box body 24; the bottom of the box body 24 is provided with a bus bar introduction port 26, and a guide protrusion is provided in the middle of the bus bar introduction port 26 27; one end of the positive electrode box 21 and the negative electrode box 23 is provided with a cable 212 to accommodate a fastening channel, and the cable 212 is provided in the corresponding box 24 through a pressing block 213; one end of the cable 212 is located at Inside the corresponding box body 24, the other end extends outside the corresponding box body 24;

The miniature power management module 1 is disposed in a box body 24 and includes a frame and a diode chip 11. A first electrode terminal 12 is provided on a left portion of the frame, and a second electrode terminal 13 is provided on a right portion. The first electrode terminal 12 A diode chip 11 is provided between the second electrode terminal 13 and the diode chip 11 and is packaged on the frame by a plastic package 14. The frame is provided with a first busbar lead-out hole 16 and a second busbelt lead-out hole 17. The first busbar lead-out hole 16 is provided between the first electrode terminal 12 and the plastic package 14, and the second busbelt lead-out hole 17 is provided between the second electrode terminal 13 and the plastic package 14;

The busbar inlet 26 covers the first busbar outlet 16 and the second busbar outlet 17.

Preferably, it further includes a solar busbar, which is connected to adjacent solar cell groups; the adjacent solar busbars are led out from the busbar inlet 26 after being led out, respectively, from the first busbar outlet holes 16 / The two bus strip lead-out holes 17 are connected to the first electrode terminal 12 / the second electrode terminal 13.

As a preferred embodiment, the micro power management module 1 in the embodiment 1 is adopted, and the micro power management module 1 is snapped into the ultra-narrow photovoltaic junction box body 2 in the embodiment 2. More specifically, the present invention It includes at least four solar buses, including a first solar bus, a second solar bus, a third solar bus, and a fourth solar bus, which are sequentially connected to adjacent solar cell groups. The first solar bus At the first electrode terminal 12 provided with the cable 212 connected to the positive electrode case 21, the first solar bus strip passes through the first installation hole 210 and the second of the first introduction channel 28 of the positive case 21 in the upward direction in order. The mounting hole 211, and then the top end of the first solar bus bar passes through the first bus bar lead-out hole 16 of the micro power management module 1 in the positive electrode box body 21 and is fixed to the first electrode terminal 12 by welding; the second solar bus bar The first mounting hole 210 and the second mounting hole 211 of the second introduction channel 29 of the box body 24 with the one end close to the first solar busbar upward pass through the positive electrode box 21, and then the top of the second solar busbar The end passes through the second busbar lead-out hole 17 of the micro power management module 1 in the positive electrode box body 21 and is fixed to the second electrode terminal 13 by welding; an end of the second solar busbar near the third solar busbar passes upward Pass the first mounting hole 210 and the second mounting hole 211 of the first introduction channel 28 of the box body 24 of the middle box body 22, and then the top end of the second solar bus belt passes through the first of the micro power management module 1 in the middle box body 22. A bus strip lead-out hole 16 is welded and fixed to the first electrode terminal 12; an end of the third solar bus strip near the second solar bus strip passes through the box body 24 of the middle box body 22 and the second lead-in channel 29 first. A mounting hole 210 and a second mounting hole 211, and then the top end of the third solar bus bar passes through the second bus bar lead-out hole 17 of the micro power management module 1 in the middle box 22 and is fixed to the second electrode terminal 13 by welding. ; One end of the third solar bus belt close to the fourth solar bus belt passes through the first mounting hole 210 and the second mounting hole 211 of the first introduction channel 28 of the box body 24 of the negative electrode box 23 upward, and then the third solar bus Bring The end passes through the first busbar lead-out hole 16 of the miniature power management module 1 in the negative electrode case 23 and is fixed to the first electrode terminal 12 by welding; the fourth solar busbar is provided for connecting the negative case 23 The second electrode terminal 13 of the cable 212, the fourth solar busbar, pass through the first mounting hole 210 and the second mounting hole 211 of the second introduction channel 29 of the negative box 23 and the box 24 of the negative box 23 in order, and then the fourth solar bus The top end of the belt passes through the second bus-belt lead-out hole 17 of the miniature power management module 1 in the negative electrode case 23 and is fixed to the second electrode terminal 13 by welding. The invention effectively prevents a short circuit by physically blocking the solar bus belt.

The above is only a preferred embodiment of the present invention. It should be noted that, for those of ordinary skill in the art, without departing from the technical principles of the present invention, a number of improvements and modifications can be made. It should also be regarded as the protection scope of the present invention.

Claims (10)

1. A miniature power management module is characterized in that it includes a frame and a diode chip, a first electrode terminal is provided at a left portion of the frame, and a second electrode terminal is provided at a right portion; the diode chip is provided at the first electrode terminal and the first electrode terminal; Between the two electrode terminals, the diode chip has a P junction and an N junction, the N junction of the diode chip is electrically connected to the second electrode terminal, and the P junction of the diode chip is electrically connected to the first electrode terminal through a jumper; The diode chip is packaged on a frame by a plastic package, and the frame is provided with a first busbar lead-out hole and a second busbelt lead-out hole; wherein the first busbelt lead-out hole is provided at the first electrode terminal and the plastic package. In between, the second busbar lead-out hole is disposed between the second electrode terminal and the plastic package.
2. The micro power management module according to claim 1, characterized in that: one side of the first electrode terminal is provided with a connection card slot, and the other side is stepped; the second electrode terminal and the first electrode terminal The structure of one electrode terminal is the same, and is arranged symmetrically to the first electrode terminal.
3. The miniature power management module according to claim 1, wherein the frame is a long flat structure.
4. The micro power management module according to any one of claims 1 to 3, wherein the frame is made of metal copper.
5. The miniature power management module according to claim 1, wherein the plastic package has a hexagonal structure, and the first electrode terminal and the second electrode terminal are embedded in the plastic package by an embedded method and The plastic package is divided into an upper plastic package with a trapezoidal cross section and a lower plastic package with an inverted trapezoidal cross section; wherein the lower plastic package has a cross section whose slope is the slope of the waist of the inverted trapezoid and serves as an auxiliary guide slope.
6. The miniature power management module according to claim 5, wherein an angle formed by the auxiliary guide slope and the frame is 30 ° to 60 °.
7. The miniature power management module according to any one of claims 1 or 5, wherein the plastic package is made of an epoxy resin material.
8. The miniature power management module according to claim 1, wherein the diode chip is a Schottky diode chip.
9. The miniature power management module according to claim 1, wherein the jumper is made of metal copper.
10. The miniature power management module according to claim 1, wherein the miniature power management module is disposed in an ultra-narrow photovoltaic junction box.

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