CN204578358U

CN204578358U - Battery vehicle DC/DC transducer

Info

Publication number: CN204578358U
Application number: CN201520169922.5U
Authority: CN
Inventors: 姜桂宾
Original assignee: ZHUHAI INPOWERCAR ELECTRIC Co Ltd
Current assignee: Zhuhai Enpower Electric Co Ltd
Priority date: 2015-03-24
Filing date: 2015-03-24
Publication date: 2015-08-19
Anticipated expiration: 2025-03-24

Abstract

The utility model relates to the DC/DC transducer that a kind of battery vehicle uses, and it comprises shell and substrate, and shell comprises base plate and the case of cover cap on base plate, and shell is provided with output port and input port; Substrate is furnished with power device; Substrate comprises aluminium base, and the back side of more than one aluminium base and the inwall of shell are fixed on the inwall of shell closely; On the aluminium base that the inwall that power device is arranged in the more than one back side and shell is close to.This DC/DC transducer has good heat dispersion.

Description

Battery vehicle DC/DC transducer

Technical field

The utility model relates to battery vehicle field, especially relates to the DC/DC transducer that battery vehicle uses.

Background technology

The DC/DC transducer that battery vehicle uses a kind ofly changes the electric pressure converter effectively exporting fixed voltage after input voltage, is usually divided into step-up DC/DC transducer, voltage-dropping type DC/DC transducer and buck-boost type DC/DC transducer.DC/DC transducer generally includes shell, is installed on the substrate on the inwall of shell and is arranged in control chip, Inductive component, power device and the capacitor on this substrate.

In order to reduce the area occupied of DC/DC transducer, normally assembled in the mode of lamination by multiple substrate, the normal employing support column be placed between two adjacent substrate is the conductive connection element of two substrates.But be distributed in a large amount of heat trnasfer that power device on each substrate produces to substrate and substrate surrounding air, and this part heat not easily passs through in the air that shell is passed to outside shell rapidly.

Summary of the invention

Main purpose of the present utility model is to provide a kind of battery vehicle DC/DC transducer.

In order to realize above-mentioned main purpose, the battery vehicle DC/DC transducer that the utility model provides comprises shell and substrate, and shell comprises base plate and the case of cover cap on base plate, and shell is provided with output port and input port; Substrate is furnished with power device; Substrate comprises aluminium base, and the back side of more than one aluminium base and the inwall of shell are fixed on the inwall of shell closely; On the aluminium base that the inwall that power device is arranged in the more than one back side and shell is close to.

From above scheme, through the back side, the aluminium base be close on outer casing inner wall passes to shell to most of heat that all power devices produce, and is passed to by shell in the air outside shell, thus improves the heat dispersion of whole DC/DC transducer.

Concrete scheme is that the back side of the aluminium base being furnished with power device is close on the bottom surface of the chamber of cover body.

Scheme is that power device is all arranged in a back side and is close on the aluminium base on the bottom surface of the chamber of case more specifically.

Another concrete scheme is be filled with one deck thermal conductive silicon glue-line between the back side of the aluminium base being furnished with power device and the inwall of shell.

Preferred scheme is that the lateral wall of cover body is provided with multiple fin.

Preferred scheme is that more than one substrate is furnished with Inductive component, and this Inductive component comprises inductive rack and winding; Inductive rack comprises housing and pin, and winding is placed in the inner chamber of housing, and winding is electrically connected with the circuit on substrate by pin; More than one inductive rack and fix it substrate between form Stilt layer structure.

From above scheme, due to inductive rack and fix it substrate between form Stilt layer structure, thus can cloth circuits and other electronic devices on the real estate immediately below housing, reduce Inductive component to the real estate of real estate, improve the flexibility of base on-board circuitry and electronic device layout, effectively reduce the area of substrate.

Another preferred scheme is that more than one substrate is furnished with Inductive component, and this Inductive component comprises inductive rack and winding; Inductive rack comprises housing and pin, and winding is placed in the inner chamber of housing, and winding is electrically connected with the circuit on substrate by pin; More than one inductive rack and fix it substrate between form Stilt layer structure.

A preferred scheme is that inductive rack also comprises pillar; One end of this pillar is supported between housing and substrate with housing with being fixedly connected with.

Another preferred scheme is that case and base plate surround an airtight chamber.

Another preferred scheme is that Inductive component also comprises embedding blob of viscose, and this embedding blob of viscose is full of the inner chamber of housing together with winding.

Accompanying drawing explanation

Fig. 1 is the stereogram of the utility model first embodiment;

Fig. 2 is the STRUCTURE DECOMPOSITION figure of the utility model first embodiment;

Fig. 3 is the stereogram of Inductive component and heat-conducting silica gel sheet in the utility model first embodiment;

Fig. 4 omits the Inductive component of embedding blob of viscose and the structure chart of heat-conducting silica gel sheet in the utility model first embodiment;

Fig. 5 is the relative position schematic diagram of Inductive component in the utility model first embodiment, heat-conducting silica gel sheet and the first aluminium base and other electronic devices;

Fig. 6 is the relative position schematic diagram of power device and the second aluminium base in the utility model first embodiment;

Fig. 7 is the relative position relation schematic diagram of the second aluminium base and case in the utility model first embodiment;

Fig. 8 is the relative position schematic diagram of the first aluminium base and the second aluminium base in the utility model first embodiment;

Fig. 9 be in the utility model first embodiment the first aluminium base and the second aluminium base be fixedly connected with schematic diagram.

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Embodiment

In the DC/DC transducer that the utility model mainly uses battery vehicle, power device is arranged and connected mode between substrate and shell is improved on substrate, to improve the heat dispersion of whole DC/DC transducer, other part-structures of DC/DC transducer design according to existing product.

First embodiment

See Fig. 1, by base plate 12 and cover cap, the case 11 on base plate 12 is formed the shell of DC/DC transducer 1, adopt silica gel ring to seal between case 11 and base plate 12 thus form an airtight chamber, can waterproof effectively, case 11 and base plate 12 all adopt aluminum casting to form.Case 11 outer surface is formed with polylith fin 111, and one end of case 11 is provided with output port 13 and input port 14.

See Fig. 2, by on the inwall that case 11 and base plate 12 form the shell of DC/DC transducer 1, first aluminium base 15 and the second aluminium base 16 is installed, first aluminium base 15 and the second aluminium base 16 are arranged at a distance of a determining deviation Horizon is capable, the first aluminium base 15 are furnished with Inductive component 18 and electric capacity 193.

See Fig. 3 and Fig. 4, Inductive component 18 is made up of inductive rack, embedding blob of viscose and winding 185, inductive rack is made up of housing 181, pillar 182 and pin 183, one end of pillar 182 is fixedly connected with housing 181, winding 185 is electrically connected with pin 183, winding 185 is placed in the inner chamber of housing 181, is filled with the casting glue injected under vacuum conditions and forms embedding blob of viscose, make winding 185 and embedding blob of viscose be full of the inner chamber of housing 181 in the inner chamber of housing 181.In the process of assembling DC/DC transducer 1, a heat-conducting silica gel sheet 184 is accompanied between the embedding blob of viscose and base plate 12 of Inductive component 18, thus the heat produced in the course of the work by winding 185 is through embedding blob of viscose and heat-conducting silica gel sheet 184, be distributed to from base plate 12 in the air shell, improve the heat dispersion of whole Inductive component.

See Fig. 5, when Inductive component 18 is welded on the first aluminium base 15, the free end face of pillar 182 is resisted against on the first aluminium base 15, thus arrange respective electronic device 192 in the space that can be supported by pillar 182 in the below of housing 181, effectively reduce Inductive component 18 to the real estate of the first aluminium base, more electronic device can be arranged in limited substrate area, and the impact that minimizing Inductive component is arranged other electronic devices and substrate circuit, and the heat that winding 185 produces is passed in air by the below of housing 181, instead of be directly passed to substrate, improve the heat dispersion of Inductive component 18.In DC/DC transducer 1 course of work, the heat that winding 185 produces passes to heat-conducting silica gel sheet 184 until dispel the heat to air from base plate 12 via embedding blob of viscose 186, improves the heat dispersion of whole DC/DC transducer.

See Fig. 6, all power devices 191 such as the power MOSFET in DC/DC transducer 1 are all arranged on the second aluminium base 16, and the lower surface of power device 191 is close to the upper surface of the second aluminium base 16.

See Fig. 7, the bottom surface of the chamber of case 11 is close at the back side of the second aluminium base 16, thus a large amount of heat that power device 191 can be produced passes to case 11 through the second aluminium base 16, and dispel the heat in air through fin 111, effectively most of heat that power device 191 produces promptly is passed in the air outside shell, improves the heat dispersion of whole DC/DC transducer 1.

See Fig. 8, spaced apart by the support column 173 be made up of copper product between second aluminium base 16 and the first aluminium base 15, and the circuit of the two realizes electrical connection by support column 173, and by screw 171, the two is fixed on the inwall of case 11, there is an insulating sleeve 172 at screw 171 overcoat.

See Fig. 9, insulating sleeve 172 is T font structure, and it is formed with counter sink, pad 174 is placed in counterbore, the lower end of insulating sleeve 172 is successively through the fixing hole on formation first aluminium base 15, and the endoporus of support column 173, until its lower surface is resisted against on the upper surface of the second aluminium base 16.During assembling, the lower surface of the bulge of insulating sleeve 172 will be resisted against on the periphery surface of the fixing hole of the first aluminium base 15, screw 171 successively through inner via hole, the inner via hole of insulating sleeve 172, the fixing hole be formed on the second aluminium base 16 of pad 174, until with the screw threaded engagement be formed on case 11 and the first aluminium base 15 and the second aluminium base 16 are fixed on the inwall of case 11.Can effectively prevent support column 173 from skew occurring in the assembling and use procedure of DC/DC transducer and encounters on screw 171, by the aluminum base layer conducting of two aluminium bases, thus by multiple support column conducting, the normal work of whole DC/DC transducer 1 is impacted.

Second embodiment

As the explanation to the utility model second embodiment, only the difference with above-mentioned first embodiment is described below.

Fill one deck thermal conductive silicon glue-line in gap between the surface of the inwall of the second aluminium base and case, to improve the speed of the second aluminium base to case transferring heat, improve the heat dispersion of whole DC/DC transducer.

3rd embodiment

As the explanation to the utility model the 3rd embodiment, only the difference with above-mentioned first embodiment is described below.

The pillar of Inductive component is the sleeve pipe be placed on outside pin, and one end of sleeve pipe is fixedly connected with housing, and the free end of pin stretches out outside the free end of sleeve pipe.Effectively can reduce the real estate of Inductive component to substrate.

In the various embodiments described above, the quantity of the pillar of inductive rack can be one or more, only needs housings support to be formed Stilt layer structure away from substrate, and the quantity of pillar is preferably 4, and these 4 pillars are preferably distributed on the periphery of housing equably.In addition, the pin by inductive rack is welded on substrate, makes housing and forms Stilt layer structure between pin and substrate, and without the need to pillar.

Claims

1. battery vehicle DC/DC transducer, comprises shell and substrate, and described shell comprises base plate and the case of cover cap on described base plate, and described shell is provided with output port and input port;

Described substrate is furnished with power device;

It is characterized in that:

Described substrate comprises aluminium base, and the back side of more than one described aluminium base and the inwall of described shell are fixed on described inwall closely;

Described power device is arranged on the aluminium base that the more than one back side and described inwall be close to.

2. battery vehicle DC/DC transducer according to claim 1, is characterized in that:

The back side being furnished with the aluminium base of described power device is close on the bottom surface of the chamber of described case.

3. battery vehicle DC/DC transducer according to claim 2, is characterized in that:

Described power device is all arranged in a back side and is close on the aluminium base on described bottom surface.

4. battery vehicle DC/DC transducer according to claim 1, is characterized in that:

Be furnished with between the aluminium base of power device and described inwall and be filled with one deck thermal conductive silicon glue-line.

5. battery vehicle DC/DC transducer according to any one of Claims 1-4, is characterized in that:

The outer surface of described case is provided with multiple fin.

6. battery vehicle DC/DC transducer according to claim 5, is characterized in that:

More than one substrate is furnished with Inductive component, and described Inductive component comprises inductive rack and winding;

Described inductive rack comprises housing and pin, and described winding is placed in the inner chamber of described housing, and described winding is electrically connected with the circuit on substrate by described pin;

More than one described inductive rack and fix it substrate between form Stilt layer structure.

7. battery vehicle DC/DC transducer according to any one of Claims 1-4, is characterized in that:

More than one described inductive rack and arrange it substrate between form Stilt layer structure.

8. battery vehicle DC/DC transducer according to claim 7, is characterized in that:

Described inductive rack also comprises pillar;

One end of described pillar is supported between described housing and substrate with described housing with being fixedly connected with.

9. battery vehicle DC/DC transducer according to claim 7, is characterized in that:

Described case and described base plate surround an airtight chamber.

10. battery vehicle DC/DC transducer according to claim 7, is characterized in that:

Described Inductive component also comprises embedding blob of viscose, and described embedding blob of viscose is full of the inner chamber of described housing together with described winding.