CN221198697U

CN221198697U - Composite bus temperature measuring device

Info

Publication number: CN221198697U
Application number: CN202323178828.XU
Authority: CN
Inventors: 李振升; 黄彭发; 杨善文
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2023-11-21
Filing date: 2023-11-21
Publication date: 2024-06-21
Anticipated expiration: 2033-11-21

Abstract

The utility model relates to the technical field of composite bus temperature measurement, in particular to a composite bus temperature measurement device. The composite busbar includes a plurality of electrodes stacked in a thickness direction, and each of the electrodes is stacked with an insulating layer on opposite sides in the thickness direction. The composite bus temperature measuring device comprises a temperature guide piece, an insulating pressing piece and a temperature sensing piece, wherein the temperature guide piece is abutted against and attached to one insulating layer, the insulating layer abutted against and attached to the temperature guide piece is an abutted insulating layer, the insulating pressing piece is used for pressing and fixing the temperature guide piece on the abutted insulating layer, and the temperature sensing piece is attached to and connected with the temperature guide piece. The heat generated by the electrodes in the composite bus is transferred to the temperature-conducting piece after the insulating layer is pressed, and the temperature-conducting piece transfers the heat to the temperature-sensing piece, so that the temperature measuring effect of the temperature-sensing piece on the composite bus is improved. In addition, the temperature guide piece is fixed on the pressing insulating layer through the insulating pressing piece in a pressing mode, insulating effect is guaranteed, safety is improved, and the structure of the composite bus temperature measuring device is more compact.

Description

Composite bus temperature measuring device

Technical Field

The utility model relates to the technical field of composite bus temperature measurement, in particular to a composite bus temperature measurement device.

Background

The composite bus is used as an indispensable current transmission scheme in industrial products, and is widely applied to new energy automobiles, new energy power generation and related electrical equipment, and is commonly used for connecting electronic devices with larger heat, such as capacitors, IGBTs and the like, due to the action of the composite bus. The composite bus comprises a plurality of electrodes which are overlapped along the thickness direction, insulating layers are overlapped on two opposite sides of each electrode along the thickness direction, the electrodes can generate certain heat in the use process of the composite bus, the sensitivity of the composite bus to temperature is high in the use process of a product, and if the composite bus exceeds a certain temperature, the composite bus has a problem, so that the operation reliability of the product is affected. Thus, the temperature of the composite bus needs to be monitored in real time during the operation process.

The existing composite bus temperature measuring device needs to reserve a threaded hole on one electrode of the composite bus, then clamps the temperature sensing piece between the insulating piece and the insulating pressing block, places the insulating piece on the composite bus, and finally enables the fixing screw to pass through the insulating pressing block and the insulating piece in sequence and then be in threaded connection with the threaded hole on the electrode. By the arrangement mode, at least the insulating part and one insulating layer are arranged between the temperature sensing part and the electrode, so that the temperature measuring effect of the temperature sensing part on the electrode is greatly reduced. In addition, because fastening screw and temperature-sensing spare are electrified metal material, need reserve between fastening screw and the temperature-sensing spare has sufficient creepage distance, just can guarantee whole composite bus temperature measuring device's security, greatly increased composite bus temperature measuring device's occupation space.

Therefore, a new composite busbar temperature measuring device is needed to solve the above problems.

Disclosure of utility model

The utility model aims to provide a composite bus temperature measuring device which is used for improving the temperature measuring effect of a temperature sensing piece on a composite bus and improving the safety and the structural compactness of the composite bus temperature measuring device.

To achieve the purpose, the utility model adopts the following technical scheme:

A composite busbar temperature measurement device including a plurality of electrodes stacked in a thickness direction, and each of the electrodes being stacked with insulating layers on opposite sides in the thickness direction, the composite busbar temperature measurement device comprising:

the temperature guide piece is abutted against one layer of the insulating layers, and the insulating layers abutted against the temperature guide piece are abutted against insulating layers;

an insulation pressing member configured to press-fix the temperature-guiding member onto the pressing insulation layer; and

The temperature sensing piece is connected with the temperature guiding piece in a fitting mode.

Preferably, the temperature guide member includes:

The temperature-conducting lamination sheet is abutted against and laminated with the abutting insulating layer; and

The temperature sensing piece is sleeved and fixed on the temperature guiding connecting column and is in fit connection with the temperature guiding fit piece.

Preferably, the insulating pressing member includes:

the insulating film is sleeved on the periphery of the temperature guide piece, and is connected to the temperature guide attaching piece in a pressing mode and the pressing insulating layer in a pressing mode.

Preferably, the insulating pressing member includes a plurality of insulating films, and the plurality of insulating films are stacked one on another in the thickness direction.

Preferably, the insulating film is made of PET material, PN material or epoxy resin material.

Preferably, the insulating pressing member includes:

The insulation briquetting, the insulation briquetting cover is located the periphery of heat conduction spare, the insulation briquetting is configured to with heat conduction laminating piece pressfitting is fixed in on the insulating layer of support.

As the preferable scheme, the insulation briquetting comprises a first briquetting and a second briquetting which are coaxially connected, the inner diameter and the outer diameter of the first briquetting are smaller than those of the second briquetting, the first briquetting is pressed on the heat-conducting lamination sheet, and the second briquetting is pressed on the pressing insulation layer.

Preferably, the electrode above the pressing insulating layer is a pressing electrode, and the pressing electrode is pressed on the insulating pressing block.

Preferably, the temperature guide member is made of a thermal good conductor material.

Preferably, the temperature-guiding connecting column is a threaded column, and the temperature sensing piece is in threaded connection with the threaded column.

The utility model has the beneficial effects that:

The utility model provides a composite bus temperature measuring device, which comprises a plurality of electrodes stacked in the thickness direction, wherein insulating layers are stacked on two opposite sides of each electrode in the thickness direction. The composite bus temperature measuring device comprises a temperature guide piece, an insulating pressing piece and a temperature sensing piece, wherein the temperature guide piece is abutted against and attached to one insulating layer, the insulating layer abutted against and attached to the temperature guide piece is an abutted insulating layer, the insulating pressing piece is used for pressing and fixing the temperature guide piece on the abutted insulating layer, and the temperature sensing piece is abutted against and connected with the temperature guide piece. When the composite bus temperature measuring device operates, heat generated by the electrodes in the composite bus is transferred to the temperature-conducting piece after the insulating layer is pressed, and the temperature-conducting piece transfers the heat to the temperature-sensing piece, so that the temperature-sensing piece only presses the insulating layer to measure the temperature of the electrodes through one layer, and the temperature measuring effect of the temperature-sensing piece on the composite bus is guaranteed. In addition, the insulating pressing piece is used for pressing and fixing the temperature guide piece on the pressing insulating layer, so that the insulating effect of the composite bus temperature measuring device is guaranteed, the safety is improved, the creepage distance between the insulating pressing piece and the temperature sensing piece is not required to be reserved, and the structure of the whole composite bus temperature measuring device is more compact.

Drawings

FIG. 1 is a sectional view of a composite busbar temperature measuring device for measuring temperature of a composite busbar according to an embodiment of the present utility model;

FIG. 2 is an assembly diagram of a temperature sensing element and a temperature guiding element according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a composite bus temperature measuring device according to a second embodiment of the present utility model for measuring temperature of a composite bus;

FIG. 4 is an exploded view of a composite bus temperature measuring device according to a second embodiment of the present utility model;

Fig. 5 is a sectional view of a structure of a composite busbar temperature measuring device according to a second embodiment of the present utility model.

In the figure:

200. A composite bus; 210. an electrode; 220. an insulating layer; 230. penetrating holes;

100. A composite bus temperature measuring device; 1. a temperature guide member; 11. a temperature-conducting lamination sheet; 12. a temperature-conducting connecting column; 2. an insulating pressing member; 21. an insulating film; 211. a via hole; 22. an insulating compact; 221. a first briquette; 222. a second briquetting; 3. a temperature sensing member.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

As shown in fig. 1, the present embodiment provides a composite bus temperature measuring device 100, which is mainly used for measuring the temperature of a composite bus 200, so as to monitor the temperature of the composite bus 200 in real time and ensure the normal operation of the composite bus 200. It should be noted that, the composite busbar 200 includes a plurality of electrodes 210 stacked in a thickness direction (up-down direction in the drawing), and each electrode 210 is stacked with an insulating layer 220 on two opposite sides in the thickness direction, and the embodiment is described by taking the composite busbar 200 having two electrodes 210 as an example, and in other embodiments, the number of electrodes 210 in the composite busbar 200 may be set according to the needs.

In this embodiment, as shown in fig. 1, the composite busbar temperature measuring device 100 includes a temperature-conducting member 1, an insulating pressing member 2 and a temperature-sensing member 3, wherein the temperature-conducting member 1 is abutted against and attached to one of the insulating layers 220, the insulating layer 220 abutted against and attached to the temperature-conducting member 1 is an abutted insulating layer, the insulating pressing member 2 is used for pressing and fixing the temperature-conducting member 1 on the abutted insulating layer, and the temperature-sensing member 3 is abutted and connected with the temperature-conducting member 1. When the composite bus temperature measuring device 100 operates, heat generated by the electrode 210 in the composite bus 200 is transferred to the temperature-conducting member 1 after the insulating layer is pressed, and the temperature-conducting member 1 transfers the heat to the temperature-sensing member 3, so that the temperature-sensing member 3 only presses the insulating layer to measure the temperature of the electrode 210, and the temperature measuring effect of the temperature-sensing member 3 on the composite bus 200 is ensured. In addition, the insulating pressing piece 2 is used for pressing and fixing the temperature guide piece 1 on the pressing insulating layer, so that the insulating effect of the composite bus temperature measuring device 100 is guaranteed, the safety is improved, the creepage distance between the insulating pressing piece 2 and the temperature sensing piece 3 is not required to be reserved, the structure of the whole composite bus temperature measuring device 100 is more compact, and the volume of the whole composite bus temperature measuring device 100 is effectively reduced. It should be noted that, the temperature sensing element 3 is a conventional temperature sensor structure, and will not be described herein.

In this embodiment, as shown in fig. 1, the heat conducting member 1 is abutted against and attached to the uppermost insulating layer 220 in the composite bus 200, so that the structure of the whole composite bus 200 is not required to be damaged, and the assembly of the composite bus temperature measuring device 100 and the composite bus 200 is more convenient. It should be noted that, in other embodiments, the heat conducting member 1 may be embedded into the composite bus 200, so that the heat conducting member 1 is pressed against and attached to a layer of insulating layer 220 inside the composite bus 200, and the insulating layer 220 located above the pressed insulating layer and the electrode 210 are all guaranteed to be provided with corresponding avoiding positions to avoid the heat conducting member 1, the insulating pressing member 2 and the temperature sensing member 3.

In this embodiment, as shown in fig. 1 and 2, the temperature-guiding member 1 includes a temperature-guiding attaching plate 11 and a temperature-guiding connecting column 12, wherein the temperature-guiding attaching plate 11 is abutted against and attached to the insulation layer, the temperature-guiding connecting column 12 is connected to the temperature-guiding attaching plate 11, and the temperature-sensing member 3 is sleeved and fixed on the temperature-guiding connecting column 12 and attached to the temperature-guiding attaching plate 11. By arranging the temperature-conducting connecting column 12, the stability and reliability of connection and fixation of the temperature sensing piece 3 and the temperature conducting piece 1 are ensured. In addition, the structural design of the temperature guide piece 1 effectively ensures the abutting area of the temperature guide piece 1 and the abutting insulating layer, effectively ensures the heat transfer effect of the temperature guide piece 1 between the electrode 210 and the temperature sensing piece 3, and ensures the temperature measurement effect of the temperature sensing piece 3 to the electrode 210. Optionally, the temperature-conducting lamination sheet 11 is in the form of a sheet, and further ensures the heat transfer effect of the temperature-conducting lamination sheet 11 between the electrode 210 and the temperature sensing member 3.

Preferably, in the present embodiment, the temperature-conducting connection post 12 is a threaded post, and the temperature sensing element 3 is in threaded connection with the threaded post. The design ensures that the temperature sensing piece 3 is detachably connected with the temperature guiding piece 1, thereby being convenient for replacing or maintaining the temperature sensing piece 3.

Preferably, in the present embodiment, the temperature-conducting member 1 is made of a thermally good conductive material, so that the heat transfer effect of the temperature-conducting member 1 between the electrode 210 and the temperature-sensing member 3 is further ensured. Specifically, the heat conducting member 1 may be made of copper, iron or the like.

In this embodiment, as shown in fig. 1, the insulating pressing member 2 includes an insulating film 21, the insulating film 21 is sleeved on the outer periphery of the temperature-guiding member 1, and the insulating film 21 is pressed and connected to the temperature-guiding lamination sheet 11 and the pressing insulating layer. Specifically, a part of the insulating film 21 is press-fit and connected to the heat-conducting lamination sheet 11, and the rest of the insulating film 21 is press-fit and connected to the pressing insulating layer, so that press-fit and fixation of the insulating film 21 to the heat-conducting member 1 and the pressing insulating layer are realized.

Preferably, as shown in fig. 1, the insulating lamination member 2 includes a plurality of layers of insulating films 21, the plurality of layers of insulating films 21 being stacked one on another in the thickness direction. By providing the multilayer insulating film 21, the press-fit fixing effect between the heat conducting member 1 and the pressing insulating layer is effectively ensured. In this embodiment, the insulating pressing member 2 includes two insulating films 21, and in other embodiments, only one insulating film 21 may be provided, or three, four or more layers may be provided, and in particular, may be provided as required. In this embodiment, each layer of insulating film 21 is provided with a via hole 211, and the via hole 211 is used for avoiding the heat-conducting connecting column 12 and the temperature sensing element 3.

Further, in the present embodiment, the insulating film 21 may be made of a PET material, a PN material, or an epoxy resin material. The material of the insulating film 21 is not particularly limited in this embodiment, as long as the insulating film 21 is ensured to have good insulation and high temperature resistance.

Example two

The composite bus temperature measuring device 100 provided in this embodiment is substantially the same as the first embodiment, and the composite bus temperature measuring device 100 provided in this embodiment is different from the first embodiment in that:

As shown in fig. 3 to 5, the insulation pressing member 2 provided in this embodiment includes an insulation pressing block 22, the insulation pressing block 22 is sleeved on the periphery of the heat conducting member 1, and the insulation pressing block 22 is used for pressing and fixing the heat conducting lamination sheet 11 on the pressing insulation layer. By designing the insulating pressing member 2 into the form of the insulating pressing block 22, the pressing fixing effect between the heat conduction attaching sheet 11 and the pressing insulating layer is ensured.

In this embodiment, the insulating compact 22 is made of an epoxy material, a nylon material, a glass fiber material, or an acryl material. However, the insulating press 22 may be made of other plastic materials, so long as the insulating press 22 has good insulation and high temperature resistance.

In addition, in the present embodiment, as shown in fig. 4 and 5, the heat conducting member 1 is embedded into the composite bus 200, so that the heat conducting member 1 is pressed against and attached to a layer of insulating layer 220 inside the composite bus 200, and the insulating layer 220 and the electrode 210 above the pressed insulating layer are provided with penetrating holes 230, so that the embedded heat conducting member 1, the insulating pressing block 22 and the temperature sensing member 3 are avoided through the penetrating holes 230. The aperture sizes of the insulating layers 220 and the through holes 230 of the electrodes 210 above the pressing insulating layers are different, and specifically, the size of the device to be avoided is set according to the need. It should be noted that, in other embodiments, the heat conducting member 1 may be pressed against and attached to the uppermost insulating layer 220 of the composite bus 200, so that the structure of the whole composite bus 200 is not required to be damaged, and the assembly of the composite bus temperature measuring device 100 and the composite bus 200 is more convenient.

In this embodiment, as shown in fig. 5, the insulation pressing block 22 includes a first pressing block 221 and a second pressing block 222 that are coaxially connected, where the inner diameter and the outer diameter of the first pressing block 221 are smaller than those of the second pressing block 222, the first pressing block 221 is pressed on the heat-conducting lamination sheet 11, and the second pressing block 222 is pressed on the pressing insulation layer. The structural design of the insulating pressing block 22 effectively ensures the pressing area of the insulating pressing block 22 and the heat-conducting lamination sheet 11, and improves the pressing fixing effect on the heat-conducting lamination sheet 11. Preferably, in the present embodiment, both the first and second compacts 221 and 222 are annular.

In addition, as shown in fig. 5, in the present embodiment, the electrode 210 located above the pressing insulating layer is a pressing electrode, and the aperture size of the penetrating hole 230 of the pressing electrode is larger than the outer diameter of the first pressing block 221 and smaller than the outer diameter of the second pressing block 222, so that the pressing electrode is pressed on the second pressing block 222, which improves the pressing effect on the insulating pressing block 22 and prevents the insulating pressing block 22 from falling off. The aperture size of the penetrating hole 230 of the insulating layer 220 above the pressing electrode is smaller than the outer diameter of the first pressing block 221, so that the insulating layer 220 above the pressing electrode is overlapped on the first pressing block 221, the pressing electrode above the pressing insulating layer is separated from the heat conducting piece 1 through the insulating pressing block 22, the insulativity between the pressing electrode and the heat conducting piece 1 is ensured, and the electrical safety of the whole composite bus temperature measuring device 100 is ensured. In addition, it should be noted that an insulating layer 220 is further disposed between the pressing insulating layer and the pressing electrode, and the hole size of the penetrating hole 230 of the insulating layer 220 is larger than the outer diameter of the second pressing block 222, so as to avoid the second pressing block 222.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A composite busbar temperature measurement device, characterized in that a composite busbar (200) includes a plurality of electrodes (210) stacked in a thickness direction, and each of the electrodes (210) is stacked with an insulating layer (220) on opposite sides in the thickness direction, the composite busbar temperature measurement device comprising:

The temperature guide piece (1), the temperature guide piece (1) is abutted against and attached to one layer of the insulating layers (220), and the insulating layers (220) abutted against and attached to the temperature guide piece (1) are abutted against insulating layers;

an insulation press-fit member (2), the insulation press-fit member (2) being configured to press-fix the temperature-guiding member (1) on the pressing insulation layer; and

The temperature sensing piece (3), temperature sensing piece (3) with heat conduction piece (1) laminating is connected.

2. The composite busbar temperature measurement device according to claim 1, wherein the temperature guide (1) comprises:

The temperature-conducting attaching piece (11), wherein the temperature-conducting attaching piece (11) is abutted and attached with the abutted insulating layer; and

The temperature-conducting connecting column (12), the temperature-conducting connecting column (12) is connected with the temperature-conducting attaching sheet (11), and the temperature sensing piece (3) is sleeved and fixed on the temperature-conducting connecting column (12) and is attached and connected with the temperature-conducting attaching sheet (11).

3. The composite busbar temperature measurement device according to claim 2, wherein the insulating press-fit (2) comprises:

The insulation film (21), the periphery of heat conduction spare (1) is located to insulation film (21) cover, and insulation film (21) pressfitting connect in heat conduction laminating piece (11) with support and press on the insulating layer.

4. A composite busbar temperature measurement device according to claim 3, wherein the insulating pressing member (2) includes a plurality of layers of the insulating film (21), the plurality of layers of the insulating film (21) being stacked in order along the thickness direction.

5. A composite busbar temperature measurement device according to claim 3, wherein the insulating film (21) is made of PET material, PN material or epoxy resin material.

6. The composite busbar temperature measurement device according to claim 2, wherein the insulating press-fit (2) comprises:

The insulation pressing block (22), the insulation pressing block (22) is sleeved on the periphery of the heat conducting piece (1), and the insulation pressing block (22) is configured to fix the heat conducting attaching piece (11) on the pressing insulation layer in a pressing mode.

7. The composite busbar temperature measurement device according to claim 6, wherein the insulating press block (22) comprises a first press block (221) and a second press block (222) which are coaxially connected, the inner diameter and the outer diameter of the first press block (221) are smaller than those of the second press block (222), the first press block (221) is pressed on the heat-conducting attaching sheet (11), and the second press block (222) is pressed on the pressing insulating layer.

8. The composite busbar temperature measurement device of claim 6, wherein the electrode (210) located above the voltage-withstanding insulating layer is a voltage-withstanding electrode that is voltage-wise compounded on the insulating compact (22).

9. The composite busbar temperature measurement device according to any one of claims 1 to 8, wherein the temperature guide (1) is made of a thermally good conductor material.

10. The composite busbar temperature measurement device according to any one of claims 2 to 8, wherein the temperature-guiding connection column (12) is a threaded column, and the temperature sensing element (3) is in threaded connection with the threaded column.