CN209515650U

CN209515650U - The power module and power modules of multiple-way supply placement-and-routing

Info

Publication number: CN209515650U
Application number: CN201920268207.5U
Authority: CN
Inventors: 周卫国
Original assignee: Shenzhen Huicheng Rate Electronics Co Ltd
Current assignee: Shenzhen Yitong Power Electronics Co., Ltd.
Priority date: 2019-03-01
Filing date: 2019-03-01
Publication date: 2019-10-18
Anticipated expiration: 2029-03-01

Abstract

To overcome the problems of the prior art, the utility model provides the power module and power modules of a kind of multiple-way supply placement-and-routing, a kind of power module of multiple-way supply placement-and-routing, its the second input conductive layer includes that multichannel second inputs interconnecting piece, multichannel the second input channel portion and the second chip layout area, second bridge arm power chip group is arranged in second chip layout area, and the multichannel second inputs interconnecting piece and is electrically connected with second input electrode.The power modules of multiple-way supply placement-and-routing provided by the utility model, in power module by the second input conductive layer setting multichannel second input interconnecting piece, in this way, can conveniently adjust the current distribution on each road.Can also by adjust multichannel second input interconnecting piece width and binding line number, to adjust the current distribution between the second input conductive layer and the second input electrode, directly affect the current distribution passed through in parasitic inductance and each power chip thereon.

Description

The power module and power modules of multiple-way supply placement-and-routing

Technical field

The utility model relates to a kind of power module fields.

Background technique

Power module is power electronic electrical device such as metal-oxide-semiconductor (Chinese name: metal-oxide half field effect transistor；Full name in English: Metal-Oxide-Semiconductor Field-Effect Transistor), IGBT (full name in English: Insulated Gate Bipolar Transistor, Chinese name: insulated gate bipolar transistor), FRD (fast recovery diode) is by certain The power switch that is combined and packaged into of function, be mainly used for electric car, photovoltaic power generation, wind-power electricity generation, industrial frequency conversion etc. is each Power conversion under kind occasion.

It is as shown in Figure 1a, common to be made of about two concatenated metal-oxide-semiconductors by taking metal-oxide-semiconductor as an example, form bridge.Upper bridge In metal-oxide-semiconductor drain D meet positive pole P+, source S is connect with the drain D of metal-oxide-semiconductor on lower bridge, and the source electrode of metal-oxide-semiconductor connects on lower bridge The drain D of power cathode P-, the source S of upper bridge metal-oxide-semiconductor and lower bridge metal-oxide-semiconductor is as output end Out.Upper bridge metal-oxide-semiconductor and lower bridge MOS The pole G of pipe connects control signal.

Repeatedly switched however as the power switch in module, function can be reduced by configuring generated inductance by its structure The reliability of rate module.Traditional power module causes the continuous current circuit inductance of module very big since continuous current circuit area is larger, Keep the switching loss of module big, reliability is low.

As shown in Fig. 1 b, Fig. 1 c, power module 1000 mainly includes the power cell 1 of bottom plate 2 and arrangement on a base plate 2 (wherein, power module 1000 controls the quantity of number as needed, may include multiple power cells 1, for example if be used for It is used as control module in three-phase circuit, then may include that 3 power cells 1 are respectively labeled as 1U, 1V, 1W as shown in the figure), Layout is formed with conductive pattern layer on power cell 1, and power chip is arranged in conductive pattern layer, realizes the switch of bridge formula Control, the power cell 1 is by including that the power electronic device of upper and lower two groups of metal-oxide-semiconductors or IGBT is connected in series, two groups of metal-oxide-semiconductors Or the electrode between IGBT is as output electrode；The first input electrode 3,4 and of the second input electrode are connected on power cell 1 Output electrode 5；Usual first input electrode 3 and the second input electrode 4 are respectively used to connection and (also wrap respectively as positive and negative electrode Include and do not used in figure for fixing and drawing each Insulating frame) anode and cathode of external power supply.

Wherein as preferably mode, mentioned in portion of techniques at present by two input electrodes (the first input electrode 3 and the Two input electrodes 4) shown in be set as arrangement stacked on top of one another, to reduce its inductance by this kind of arrangement.

In the prior art, the input conductive layer being electrically connected with corresponding input electrode is typically provided in existing conductive pattern layer, Including the first input conductive layer and the second input conductive layer, it is used to be electrically connected with the first input electrode and the second input electrode, with Lower bridge chip is arranged on first input conductive layer, is formed the first bridge arm power chip group, is arranged upper bridge on the second input conductive layer Chip is formed for the second bridge arm power chip group；It is typically provided with an access on second input conductive layer, is used as and corresponding the Two input electrodes 4 are directly or indirectly electrically connected, this kind of mode only one current path, so that its current convergence is on one side, Parasitic inductance is larger.And this kind of mode can not rationally adjust the current distribution of bridge chip.

Utility model content

Arrange that the input conductive layer of upper bridge chip generallys use a monolith layers of copper on power module in the prior art to overcome It is electrically connected as access with corresponding input electrode, this kind of mode only one current path, so that its current convergence, parasitic inductance It is larger, the problem of corresponding to current distribution on upper bridge chip can not be rationally adjusted, the utility model provides a kind of multiple-way supply cloth The power module and power modules of office's wiring.

On the one hand the utility model provides a kind of power module of multiple-way supply placement-and-routing, including bottom plate and be set to Power cell, output electrode and input electrode on bottom plate；The input electrode includes the first input electrode, the second input electricity Pole；

The power cell includes substrate, circuit layers of copper and power chip group, and the circuit layers of copper is formed in the substrate On, the power chip group is arranged in the circuit layers of copper；The circuit layers of copper includes the first input conductive layer, the second input Conductive layer and output conductive layer；The power chip group includes the first bridge arm power chip group and the second bridge arm power chip group；

The first input conductive layer is directly or indirectly electrically connected with first input electrode, and second input is led Electric layer is directly or indirectly electrically connected with second input electrode；

Wherein, the second input conductive layer includes that multichannel second inputs interconnecting piece, multichannel the second input channel portion and the Two chip layout areas, multichannel second input interconnecting piece and are electrically connected by multichannel the second input channel portion and second chip layout area It connects；

The second bridge arm power chip group is arranged in second chip layout area, the input of multichannel second connection Portion is electrically connected with second input electrode.

The power module of multiple-way supply placement-and-routing provided by the utility model, by being set on the second input conductive layer It sets multichannel second and inputs interconnecting piece, in this way, can conveniently adjust the current distribution on each road.It can also be defeated by adjusting multichannel second Enter interconnecting piece width and binding line number, to adjust the electric current between the second input conductive layer and the second input electrode point Cloth directly affects the current distribution passed through in parasitic inductance and each power chip thereon.

Further, correspondence is divided into multichannel in second input electrode, with the multichannel second on the second input conductive layer Input interconnecting piece electrical connection.

Further, the circuit layers of copper includes the first input drainage layer, the first input conductive layer, the second input conduction Layer and output conductive layer；

The first input conductive layer is equipped with lower bridge chip, and the second input conductive layer is equipped with upper bridge chip；

The first input drainage layer is electrically connected with the source electrode of the lower bridge chip on the first input conductive layer,

The first input drainage layer is electrically connected with first input electrode；

The second input conductive layer is electrically connected with second input electrode.

Further, second chip layout area includes several second input support arms, the second bridge arm power chip Group is arranged on several second input support arms.

Further, it is formed with first inside the second input conductive layer to leave a blank area, described first leaves a blank arrangement in area There are the first input conductive layer and the first input drainage layer.

Further, several control conductive layers are additionally provided in the circuit layers of copper.

Further, the first input electrode on the multiple power cell is integrated into the first input bus busbar；

The second input electrode on the multiple power cell is integrated into the second input bus busbar.

The utility model second aspect additionally provides a kind of power modules, including power module and capacitance module, wherein institute Stating power module is above-mentioned power module.

The power modules of multiple-way supply placement-and-routing provided by the utility model, by the second input in power module Multichannel second is set on conductive layer and inputs interconnecting piece, in this way, can conveniently adjust the current distribution on each road.Adjusting can also be passed through Multichannel second input interconnecting piece width and binding line number, to adjust between the second input conductive layer and the second input electrode Current distribution, directly affect the current distribution passed through in parasitic inductance and each power chip thereon.

Detailed description of the invention

Fig. 1 a is power module circuit schematic illustration in the prior art；

Fig. 1 b is the schematic top plan view of power module in the prior art；

Fig. 1 c is the schematic front view of power module in the prior art；

Fig. 2 a is the vertical of the power module (naked frame) of the model A provided in specific embodiment of the present invention Body schematic diagram；

Fig. 2 b is the front-view schematic diagram of the power module of the model A provided in specific embodiment of the present invention；

Fig. 3 is the vertical of the power module (containing Insulating frame) of the model A provided in specific embodiment of the present invention Body schematic diagram；

Fig. 4 is the schematic top plan view of the power module of model A in specific embodiment of the present invention；

Fig. 5 is enlarged diagram at A in Fig. 2 a；

Fig. 6 is enlarged diagram at B in Fig. 2 a；

Fig. 7 is enlarged diagram at C in Fig. 2 b；

Fig. 8 is the enlarged diagram of power cell in Fig. 4；

Fig. 9 is the second input conductive layer schematic diagram in Fig. 8；

Figure 10 is the first input conductive layer schematic diagram in Fig. 8；

Figure 11 is that the first input conductive layer, the second input conductive layer, output conductive layer and first are defeated in circuit figure layer in Fig. 8 Enter to drain the arrangement schematic diagram of layer；

Figure 12 is the stereoscopic schematic diagram of the second input bus busbar in Fig. 2 a；

Figure 13 is the stereoscopic schematic diagram of the first input bus busbar in Fig. 2 a；

Figure 14 is the stereoscopic schematic diagram of output electrode in Fig. 2 a；

Figure 15 is the stereoscopic schematic diagram of lower bridge source connection；

Figure 16 is the stereoscopic schematic diagram of upper bridge source connection；

Figure 17 is that the solid of the power modules (no encapsulation) of the model A provided in specific embodiment of the present invention is shown It is intended to；

Figure 18 is that the solid of the power modules (after encapsulation) of the model A provided in specific embodiment of the present invention is shown It is intended to；

Figure 19 A is the power module (naked frame) of the model B provided in specific embodiment of the present invention Decomposition diagram；

Figure 19 B is the power module (naked frame) of the model B provided in specific embodiment of the present invention Stereoscopic schematic diagram；

Figure 20 A is the power module of the model B provided in specific embodiment of the present invention (containing Insulating frame) Stereoscopic schematic diagram；

Figure 20 B is that power cell is arranged on the power module of the model B provided in specific embodiment of the present invention In the schematic top plan view on bottom plate；

Figure 20 C is the enlarged diagram of single power cell in Figure 20 B；

Figure 20 D is the second input conductive layer enlarged diagram in Figure 20 C power cell；

Figure 20 E is the first input conductive layer enlarged diagram in Figure 20 C power cell；

Figure 21 is that the solid of the power modules (no encapsulation) of the model B provided in specific embodiment of the present invention is shown It is intended to；

Figure 22 is the power modules of the model B provided in specific embodiment of the present invention (containing Insulating frame) Stereoscopic schematic diagram；

Figure 23 is the vertical of the power module (naked frame) of the model C provided in specific embodiment of the present invention Body schematic diagram；

Figure 24 is that the solid of the power modules (no encapsulation) of the model C provided in specific embodiment of the present invention is shown It is intended to；

Figure 25 is that the solid of the power modules (after encapsulation) of the model C provided in specific embodiment of the present invention is shown It is intended to；

Figure 26 is the vertical of the power module (naked frame) of the model D provided in specific embodiment of the present invention Body schematic diagram；

Figure 27 is the vertical of the power module (containing Insulating frame) of the model D provided in specific embodiment of the present invention Body schematic diagram；

Figure 28 is that the lower bridge source connection solid in the model D provided in specific embodiment of the present invention is shown It is intended to；

Figure 29 is that the upper bridge source connection solid in the model D provided in specific embodiment of the present invention is shown It is intended to；

Figure 30 is that the solid of the power modules (before encapsulation) of the model D provided in specific embodiment of the present invention is shown It is intended to；

Figure 31 is the solid of the power modules (after encapsulation) of the model D provided in specific embodiment of the present invention Schematic diagram.

Appended drawing reference is as follows:

1000, power module；2000, capacitance module；

1, power cell；11, circuit layers of copper；12, substrate；13, power chip；13a, lower bridge chip；13b, upper bridge chip； 14, data pin；

111, the first input drainage layer；112, the second input conductive layer；113, the first input conductive layer；114, output is conductive Layer；115, conductive layer is controlled；

1121, the second input interconnecting piece；1122, the second input channel portion；1123, the second input support arm；1124, it first stays Dead zone；1125, it second leaves a blank area；1131, the first input interconnecting piece；1132, the first input support arm；1133, third is left a blank area；

2, bottom plate；

3, the second input electrode；31, the second external connection portion；32, the second main part；33, connect portion in second；311, second is external Hole；

4, the first input electrode；41, the first external connection portion；42, the first main part；43, connect portion in first；411, first is external Hole；

30, the second input bus busbar；301, the second busbar external connection portion；302, the second busbar main part；303, second is female Connect portion in row；3011, the second busbar external hole；

40, the first input bus busbar；401, the first busbar external connection portion；402, the first busbar main part；403, first is female Connect portion in row；4011, the first busbar external hole；

5, output electrode；51, external connection portion is exported；52, main part is exported；53, connect portion in output；511, external hole is exported；

6, Insulating frame；

7, capacitor；

8, the second capacitance electrode；81, the second capacitance electrode connecting pin；810, the second capacitance electrode connecting hole；

9, first capacitor electrode；91, first capacitor electrode connecting end；910, first capacitor electrode connecting hole；911, it avoids Hole；

10, source connection；10a, lower bridge source connection；10b, upper bridge source connection；101, welded bridge；102, it converges Stream portion；102a, negative electrode connecting pin；102b, cathode confluence end；103, output electrode connecting pin；1011, weld part；1012, it keeps away Allow portion.

Specific embodiment

The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below In conjunction with accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific implementation described herein Example is only used to explain the utility model, is not used to limit the utility model.

In this embodiment, it is intended that by multiple embodiments for example, with to shown in Figure of description Five kinds of power modules 1000 and its mould group explaining property explanation.With to improved electrode structure in its power module 1000, The optimization of circuit layers of copper 11 is laid out and improved explaining property of source connection explanation.

As illustrated by figures 1 a-1 c, to make skilled in the art realises that the utility model, it is intended to protection in the utility model There is the identical widely-known technique in part in utility model point.Wherein, the power module to be protected in the utility model 1000 include bottom plate 2 and arrangement power cell 1 on a base plate 2, which is usually metal material, for example, copper, copper alloy, Aluminium, aluminium alloy, any one in aluminium silicon carbide are made, and the purpose is to distribute the heat in power cell 1 by the bottom plate 2 It goes out.

Power cell 1 includes substrate 12, and layout is formed with circuit layers of copper 11 on the substrate 12, and sets in circuit layers of copper 11 Power chip 13 is set, these power chips 13 are divided into two groups, are referred to as the first bridge arm power chip group and the second bridge arm power Chipset, referred to as the first power chip group and the second power chip group, or it is known as upper bridge power chip group and lower bridge power core (for example, the second bridge arm power chip group is as upper bridge power chip group, the first bridge arm power chip group is as lower bridge power for piece group Chipset)；Realize the switch control of bridge formula, which passes through the power electricity including upper and lower two groups of metal-oxide-semiconductors or IGBT Sub- devices in series forms, and is connect between two input electrodes respectively, and makees in two groups of extraction electrodes between metal-oxide-semiconductor or IGBT For output electrode 5；

Metal-oxide-semiconductor is known to the public comprising 3 electrodes: grid G, source S and drain D, wherein source S and drain D connect drive Dynamic power supply, grid G are used for input control signal, the on-off between control source S, drain D as input control pole.By from source It is exported in pole S or drain D.IGBT is equally also known to the public, also includes three electrodes: gate pole G, collector C, emitter E；Its In, gate pole G corresponds to the grid G of metal-oxide-semiconductor, and collector C corresponds to the drain D of metal-oxide-semiconductor；Emitter E corresponds to the source S of metal-oxide-semiconductor；Gate pole G also controls the on-off between emitter E and collector C as input control pole；The two control is also essentially identical.It rises for convenience See, specific explanations explanation will be carried out in following embodiment by taking metal-oxide-semiconductor as an example.

In the utility model, it is not applied to etc. to carry out specific explanations explanation, and only to the electrode of power module 1000 The structure that the arrangement of structure and the layout of circuit layers of copper 11 and each source electrode are electrically connected optimizes.Therefore, with Also emphasis passes through the application progress specific explanations explanation to different capacity module 1000 and its corresponding power modules in lower embodiment.

Embodiment 1

As shown in Fig. 2 a- Figure 18, this example will be introduced by the power module 1000 and power modules of model A, with The claimed following innovative point of the utility model is subjected to specific explanations explanation, core utility model point is as follows in this example: closing The layout optimization design of circuit layers of copper 11 in the Curve guide impeller of electrode, power module 1000 and the source electrode of new utility model Connector 10.

As shown in Fig. 2 a- Fig. 7, a kind of power module 1000 is disclosed in this example comprising bottom plate 2 and be arranged in bottom plate 2 On more than two power cells 1, the power cell 1 include substrate 12, circuit layers of copper 11 and power chip group, the electricity Road layers of copper 11 is formed on the substrate 12, and the power chip group is arranged in the circuit layers of copper 11；Power chip group packet The first bridge arm power chip group, the second bridge arm power chip group are included, or claims to include upper bridge power chip group and lower bridge power core Piece group；In general, connecting power electrode (or claiming power pin) also from power cell 1, power electrode is used to external input electricity Source and output drive signal, power electrode functionally generally include input electrode and an output electrode 5.Except above-mentioned power electricity Pole (or power pin) outside, is additionally provided with the data pin 14 for being sampled or being controlled on power cell 1.This is ability Well known to field technique personnel.It further include having power in order to which above-mentioned power electrode and data pin 14 to be fixed and insulate The Insulating frame 6 that pin and data pin 14 are packaged.Input electrode generally includes the first input electrode 4 and the second input electricity Pole 3；First input electrode 4 one are used as positive electrode, another is then used as negative electrode.For example, if 4 conduct of the first input electrode Positive electrode, then the second input electrode 3 is then used as negative electrode.If the second input electrode 3 is used as positive electrode, the first input electrode 4 Then it is used as negative electrode.Which as positive electrode, which be not particularly limited as negative electrode, belong to artificial rule in most cases It is fixed.It is defined in which the polarity of an input electrode, then the polarity of another input electrode is on the contrary, that's what it all adds up to.This example In, it is positive electrode with the second input electrode 3 for the convenience of description, the first input electrode 4 is negative electrode.

In general, the circuit layers of copper 11 includes that the first input conductive layer 113, second inputs conductive layer 112 and output conduction Layer 114；The first input electrode 4, the second input electrode 3 and output electrode 5 are connected on the power cell 1；Wherein, first is defeated Enter conductive layer 113 and the second input conductive layer 112 is also typically used as opposite polarity setting, for example, the first input is led in this example Electric layer 113 is used as negative conductive layer, then the second input conductive layer 112 is used as positive conductive layer.It is of course also possible to which polarity is reversed. Its polarity is relevant with the input electrode that it is electrically connected, this is known to those skilled in the art.

And above-mentioned upper bridge power chip group and lower bridge power chip group are respectively disposed at the first input conductive layer 113, Two input conductive layers 112 input on any two copper foil layer of conductive layer, as long as its result to constitute bridge power chip Group and lower bridge power chip group series connection, and from output conductive layer 114 on output drive signal.In general, upper bridge power chip Group is generally arranged on positive conductive layer, in this example, is arranged on the second input conductive layer 112, and lower bridge power chip group is then arranged On negative conductive layer or output conductive layer 114, in this example, it is arranged on the first input conductive layer 113.

Corresponding first input electrode 4 of a usual power cell 1 and the second input electrode 3；If power module There are 3 power cells 1 in 1000, then it is corresponding, 3 the first input electrode 4 and 3 second inputs are equipped in power module 1000 Electrode 3 and 3 output electrodes 5.

Applicant has found this kind of mode in R&D process, and there are problems: since power electrode can all introduce inductance, causing The unit commutation circuit inductance is very big, and peak voltage is very high, and dynamic loss is very big.

To solve this problem, to reduce power electrode inductance, and in the external structure for not changing module generally.This example In the structure of existing power electrode is improved, the input electrode of the identical polar in original multiple power electrodes is closed And form input bus busbar；The first input bus busbar 40 is formed for example, several first input electrodes 4 are merged；It will be several Second input electrode 3, which merges, forms the second input bus busbar 30.First input bus busbar 40 and the second input bus busbar The setting of 30 laminations.

As shown in Fig. 2 a- Fig. 7, the first input bus busbar 40 and 30 arranged stacked of the second input bus busbar, So-called arranged stacked, i.e., so that above-mentioned first input bus busbar 40 and the second input bus busbar 30 be arranged such that its Spatially it is arranged in lamination.In this example, the first input bus busbar 40 is located at top, under the second input bus busbar 30 is located at Portion.

As shown in figure 12, the second input bus busbar 30 in this example is including in the second busbar main part 302, the second busbar Portion, company 303 and the second busbar external connection portion 301；The number of the second busbar external connection portion 301 can be one or more.It is preferred that 2 More than a, for example, can be 2, or 3, or 4 or more.In this example, the second busbar external connection portion 301 Number is corresponding with the number of power cell 1, in this example power module 1000 be equipped with 3 power cells 1 (be respectively labeled as 1U, 1W and 1V), then the second busbar external connection portion 301 is also 3.

It is connected on power cell 1 as shown in figure 5, connecting portion 303 in second busbar, the second busbar external connection portion 301 is from Extend on two busbar main parts 302 to outside power module 1000, the second busbar external connection portion 301 is used for one of electricity with power supply Pole, which is electrically connected, (has the specific explanations to power cell 1, specific electrical connection will in the following embodiments in the embodiment of lower part It is specifically described)；

As shown in figure 13, the first input bus busbar 40 in this example is including in the first busbar main part 402, the first busbar Portion, company 403 and the first busbar external connection portion 401；The number of the first busbar external connection portion 401 can be one or more.It is preferred that 2 More than a, for example, can be 2, or 3, or 4 or more.In this example, the first busbar external connection portion 401 Number is corresponding with the number of power cell 1, in this example power module 1000 be equipped with 3 power cells 1 (be respectively labeled as 1U, 1W and 1V), then the first busbar external connection portion 401 is also 3.

It is connected on power cell 1 as shown in figure 5, connecting portion 403 in first busbar, the first busbar external connection portion 401 is from Extend on one busbar main part 402 to outside power module 1000, the first busbar external connection portion 401 is used for one of electricity with power supply Pole, which is electrically connected, (has the specific explanations to power cell 1, specific electrical connection will in the following embodiments in the embodiment of lower part It is specifically described)；

Wherein, as shown in figure 13, output electrode 5 includes connecting portion 53 in output main part 52, output external connection portion 51 and output； Wherein, output external connection portion 51 is used for external output drive signal；Connect portion 53 in output for being electrically connected (lower part with power cell 1 There are the specific explanations to power cell 1 in embodiment, specific electrical connection will be specifically described in the following embodiments).This In example, the corresponding power cell 1 of each input electrode, it will be understood that the power module 1000 in this example includes 3 power lists Member 1.It is then corresponding, it include 3 output electrodes 5 in power module 1000.

As preferred mode, above-mentioned first input bus busbar 40 is equipped with 3 the first busbar external connection portions 401.Second Input bus busbar 30 is equipped with 3 the second busbar external connection portions 301.Wherein, from above getting off, above-mentioned first input bus busbar 40 and second input bus busbar 30 set in upper and lower level laying up, meanwhile, from the point of view of horizontal space, above-mentioned second input bus busbar 30 3 the second busbar external connection portions 301 and 3 the first busbar external connection portions 401 of the first input bus busbar 40 are set in distance； In this example, the first input bus busbar 40 is negative electrode, and the second input bus busbar 30 is positive electrode, as shown in Figure 2 a, in figure From right to left, the first mother of the second busbar external connection portion 301 of the second input bus busbar 30 and the first input bus busbar 40 The spaced polarity of electrode of exclusive socket part 401 is as follows: anode, cathode, anode, cathode, anode, cathode.(certainly, it can also make Its polarity is reversed, can also with the first input bus busbar 40 be anode, the second input bus busbar 30 be cathode, then its The polarity of spaced first busbar external connection portion 401 and the second busbar external connection portion 301 is as follows: cathode, anode, cathode, anode, Cathode, anode.)

In this example, as preferred mode, the first busbar external connection portion 401, second of the first input bus busbar 40 Settable external hole in second busbar external connection portion 301 of input bus busbar 30 and the output external connection portion 51 of output electrode 5, passes through The external hole is threadedly coupled with bolt with the cooperation of nut, wherein the number of above-mentioned external hole is not intended to limit, and can be one It is a or multiple.Wherein, as shown in figure 13, the first busbar external connection portion 401 of the first input bus busbar 40 is equipped with first Busbar external hole 4011, as shown in figure 12, the second busbar external connection portion 301 of the second input bus busbar 30 are equipped with second Busbar external hole 3011, as shown in figure 14, the output external connection portion 51 of the output electrode 5 are equipped with output external hole 511.

The shape of above-mentioned first input bus busbar 40, the second input bus busbar 30 and output electrode 5 does not limit especially Fixed, as preferred mode, as shown in figure 12, in this example, whole the second input bus busbar 30 is in zigzag, such as Figure 13 institute Show, in this example, which is in zigzag, and as shown in figure 14, in this example, which is in zigzag.

It is folded as shown in the figure using preferred first input bus busbar 40 above-mentioned in this example and the second input bus busbar 30 Layer arrangement is connected in parallel the input electrode of three power cells 1, power distribution to three power cells 1.It is such to set Meter, is similar to the inductance in parallel of the input electrode three groups of power supplys, module commutation circuit inductance greatly reduces, reduces mould The loss of block.

As shown in figures s-11, this example will carry out the optimization of circuit layers of copper 11 disclosed by the utility model layout further It illustrates.Circuit layers of copper 11 in this example includes that the second input conductive layer 112, first inputs conductive layer 113 and output conduction Layer 114；It is used as preferred mode in example, further includes the first input drainage layer 111 and control conductive layer 115；First input is drawn Fluid layer 111 is used to the convenient source electrode with the lower bridge power chip 13 on the first input conductive layer 113 and is electrically connected, and controls conductive layer 115 are used to be electrically connected with the gate pole on each power chip 13 by binding line or other electrical connectors, with input control Signal.Then power chip 13 is set in foregoing circuit layers of copper 11, bridge power chip group and lower bridge power chip group in formation, The upper bridge power chip group includes several upper bridge chip 13b, and the lower bridge power chip group includes several lower bridge chip 13a； The lower bridge power chip group is arranged on the negative conductive layer or output conductive layer 114；The upper bridge chip 13b is arranged in On the positive conductive layer.

In this example, power chip 13 (referred to as descending bridge chip 13a) is set on the first input conductive layer 113, it is defeated second Enter to be respectively set power chip 13 (referred to as upper bridge chip 13b) on conductive layer 112.Power chip 13 is arranged in circuit layers of copper 11 When, it is electrically connected the drain electrode of its lower surface directly with circuit layers of copper 11, the source electrode on the upper surface of power chip 13 is then It is electrically connected by binding line or other electrical connectors.Setting multichannel first inputs connection on first input conductive layer 113 Portion 1131, each road first input between interconnecting piece 1131 and are not connected to, to facilitate the current distribution for adjusting each section.

In the prior art, it is typically provided with an access on the second input conductive layer 112, be used as straight with the second input electrode 3 It connects or is electrically connected indirectly, this kind of mode only one current path, so that its current convergence, on one side, parasitic inductance is larger. And this kind of mode can not rationally adjust the current distribution of each upper bridge chip.

As shown in figure 9, the second input conductive layer described in the second input conductive layer 112 disclosed in this example includes multichannel second Input interconnecting piece 1121, the second input channel of multichannel portion 1122 and the second chip layout area, the second bridge arm power chip group It is arranged in second chip layout area, the multichannel second inputs interconnecting piece 1121 and is electrically connected with second input electrode 4 It connects.Wherein, second chip layout area includes several second input support arms 1123, the second bridge arm power chip group arrangement In on several second input support arms 1123.In this example, interconnecting piece 1121 is inputted equipped with two-way second and is used to pass through binding line It is electrically connected with portion 303 is connected in the second busbar of the second input bus busbar 30；Also the input connection of multichannel second can be set Portion 1121.Two-way second at left and right sides of this inputs interconnecting piece 1121 and is separately connected the second input channel portion 1122, this is second defeated Enter the forming circuit connection of passage portion 1122, and from several second input support arms 1123 are connected thereon, the upper bridge chip 13b is arranged On above-mentioned second input support arm 1123.In this example, due to the second input bus busbar 30 be used as positive electrode, for it is external Positive pole is electrically connected, and therefore, the electric current introduced from the second input conductive layer 112 will be from bridge chip 13b's thereon The source electrode of upper surface is reserved to output electrode 5.

In this example, first being formed with inside the second input conductive layer 112 and is left a blank area 1124, first area 1124 of leaving a blank is main To be used to arrange the first input conductive layer 113 and other circuit layers of copper 11.In this example, each the of the second input conductive layer 112 Second is additionally provided between two input support arms 1123 to leave a blank area 1125, which is used to arrange control conductive layer 115, The control conductive layer 115 will be electrically connected with binding line or other electrical connectors with the gate pole on upper bridge chip 13b.

In this example, interconnecting piece 1121 is inputted by multichannel second and inputs positive electrode current, to facilitate the electric current for adjusting each section Distribution.Can also by adjust the second input interconnecting piece 1121 width and binding line number adjust the second input conductive layer 112 and the second current distribution between input electrode 3, it directly affects logical in parasitic inductance and each power chip 13 thereon The current distribution crossed.

As shown in Figure 10, the first input conductive layer 113 disclosed in this example includes the first input interconnecting piece 1131 and first Support arm 1132 is inputted, which is used to connect in output conductive layer 114 or the second input conductive layer 112 Upper bridge chip 13b source electrode (because the source electrode of upper bridge chip 13b be also electrically connected to output conductive layer 114), this first input branch Lower bridge chip 13a is arranged on arm 1132, the drain electrode of the lower bridge chip 13a is directly electrically connected with the first input conductive layer 113, Directly or indirectly (the first input electrode 4, is the first input bus preferably in this example to its source electrode in this example with external negative electrode Connect portion 403 in the first busbar on busbar 40) electrical connection.In this example, there are thirds between above-mentioned each first input support arm 1132 It leaves a blank area 1133, third area 1133 of leaving a blank is used to arrange its corresponding control conductive layer 115.

It in this example, is routed for convenience, is first provided with one first input and drains layer 111, the first input drainage layer 111 As the articulamentum between lower bridge chip 13a and the first input bus busbar 40, the first input drainage layer 111 is used to pass through binding Line perhaps other electrical connectors and the source electrode of the lower bridge chip 13a be electrically connected and pass through binding line or other electrical connectors with The portion of company is electrically connected in first busbar of the first input bus busbar 40.

As shown in figure 11, in this example, the in the second input conductive layer 112 first area 1124 of leaving a blank is mainly used to arrangement the One input conductive layer 113 and the first input drainage layer 111.

Enlarged drawing as shown in Figure 5, connect in the second busbar of the second input bus busbar 30 portion 303 by binding line or Other electrical connectors (unmarked in figure) are electrically connected to the input interconnecting piece 1121 of the multichannel second on the second input conductive layer 112； Connect portion 403 in first busbar of the first input bus busbar 40 and passes through binding line or other electrical connectors electricity (unmarked in figure) It is connected to the first input drainage layer 111.

It has been found that several lower bridge chip 13a of the first input support arm 1132 on its first input conductive layer 113, It is the relationship being connected in parallel, and each lower bridge chip 13a passes through electrical connector and is electrically connected to the first input electrode 4 or sheet On the first input bus busbar 40 in example.The existing single binding line or other metal foils of generalling use is as electrical connection Part individually descends source electrode and the electrical connection of the first input electrode 4 or the first input bus busbar 40 of bridge chip 13a to realize；It should Kind connection type is extremely complex, and is easy error.

Enlarged drawing as shown in Figure 6, if likewise, its second input conductive layer 112 on second input support arm 1123 on Dry upper bridge chip 13b, is also the relationship being connected in parallel, it is direct that the source electrode of each upper bridge chip 13b passes through electrical connector Either be indirectly electrically connected on output electrode 5 or the first input conductive layer 113 (when such as the first input conductive layer 113 is negative, Then the first input conductive layer 113 and output conductive layer 114 must be electrically connected).It is existing generally use single binding line or Other metal foils realize that the source electrode of single upper bridge chip 13b and the output electrode 5 or first are defeated as electrical connector Enter the electrical connection of conductive layer 113；This kind of connection type is extremely complex, and same easy error.

Applicant has found the connection general character of each power chip 13 in R&D process, is based on above-mentioned connection general character, practical Novel following improved two source connections 10；Two source connections 10 are respectively intended to realize bridge chip 13b Be connected in parallel, lower bridge chip 13a is connected in parallel, and be correspondingly connected with corresponding input electrode (or inlet highway be total Row) or output electrode 5.It, will be for realizing the source connection 10 of sources connected in parallel connection on upper bridge chip 13b for the sake of difference Referred to as upper bridge source connection 10b, under the source connection 10 connected for realizing sources connected in parallel on lower bridge chip 13a is known as Bridge source connection 10a.

The source electrode of upper bridge chip 13b in the upper bridge power chip group passes through bridge source connection 10b parallel connection on one and connects It connects, and the upper bridge source connection 10b is connected directly or indirectly to the output electrode 5；In the lower bridge power chip group Lower bridge chip 13a be connected in parallel by bridge source connection 10a once, and the lower bridge source connection 10a directly or It is connected to negative electrode in succession.

As shown in Figure 15,16, two source connections 10 disclosed in this example are in E font.It includes confluence portion 102 With the welded bridge 101 being connected in confluence portion 102, the welding welded with power chip 13 is formed on each welded bridge 101 It arches upward to form the relief portion 1012 of evacuation between portion 1011 and weld part 1011.By this kind of welded bridge 101, may be implemented Parallel connection between bridge chip 13b, and it is passed through into confluence portion 102 or welded bridge 101 and external input electrode or output Electrode 5 is electrically connected.

Specifically, as shown in figure 15, a kind of lower bridge source connection 10a of E font is disclosed in this example；The source Xia Qiao Pole connector 10a includes confluence portion 102 and the welded bridge 101 that is connected in confluence portion 102, formed on each welded bridge 101 with It arches upward to form the relief portion 1012 of evacuation between the weld part 1011 and weld part 1011 that lower bridge chip 13a is welded.It converges Stream portion 102 is equipped with negative electrode connecting pin 102a (or negative electrode connecting pin 102a can also be set on welded bridge 101), such as schemes Enlarged drawing shown in 5, negative electrode connecting pin 102a are welded on the first input drainage layer 111, so make each lower bridge chip 13a's Source electrode be electrically connected by way of in parallel with the first input drainage layer 111, the first input drainage layer 111 pass through binding line and The electrical connection of first input bus busbar 40.It is of course also possible to consider to cancel the first input drainage layer 111, directly by the lower bridge The negative electrode connecting pin 102a of source connection 10a is welded direct on the first input bus busbar 40 or the first input On electrode 4 (the first input bus busbar 40 or the first input electrode 4 are negative electrode at this time).

As shown in figure 16, a kind of upper bridge source connection 10b of E font is disclosed in this example；The upper bridge source electrode connection Part 10b includes confluence portion 102 and the welded bridge 101 that is connected in confluence portion 102, is formed and upper bridge core on each welded bridge 101 It arches upward to form the relief portion 1012 of evacuation between the weld part 1011 and weld part 1011 that piece 13b is welded；The confluence The output electrode connecting pin 103 being directly or indirectly electrically connected with output electrode 5 is formed in portion 102 or welded bridge 101.

Preferred mode is used as in this example, end setting should be directly or indirectly electric with output electrode 5 on welded bridge 101 The output electrode connecting pin 103 of connection.

In this example, as preferred mode, cathode confluence end 102b is additionally provided in confluence portion 102, as shown in fig. 6, this is negative Pole confluence end 102b is welded on the first input conductive layer 113, and the source electrode of each lower bridge chip 13a is so made to pass through side in parallel Formula is electrically connected with the first input conductive layer 113, and the output electrode connecting pin 103 and output conductive layer 114 are welded to connect, the output Conductive layer 114 is electrically connected by binding line with output electrode 5.It is of course also possible to consider to cancel the output conductive layer 114, directly The output electrode connecting pin 103 of bridge source connection 10b on this is welded direct in the output electrode 5.

Above-mentioned source connection 10 is formed by using metal foil integral production.Its generally use metal foil integrated punching at Type.The material of the metal foil is preferably aluminium foil or copper foil；It is preferred that using copper foil, ductility and solderability are more preferable.

Using source connection 10 disclosed in this example, each setting of power chip 13 correspondence in the prior art can be substituted and tied up The mode of alignment or other electrical connectors, source connection 10 connect multiple power chips using integrated molding, are allowed to Current path is formed, the wiring of module is simplified, reduces the wiring inductance of module, while facilitating installation, its dress can be made It is simpler with technique, production efficiency is promoted, and enhance its connection reliability, reduces production cost.

As shown in Figure 17, Figure 18, this example will be to the first power module 1000 disclosed by the utility model and capacitor mould The power modules that block 2000 is formed after combining carry out specific explanations explanation.

A kind of power modules disclosed in this example, as shown in Figure 17, Figure 18, which includes power module 1000 and electricity Molar block 2000；

Wherein the power module 1000 is the content of the present embodiment middle and upper part description, and capacitance module 2000 includes capacitor electricity Pole and capacitor 7, the capacitance electrode include first capacitor electrode 9 and the second capacitance electrode 8, the first capacitor electrode 9 and Several capacitors 7 being connected in parallel are folded between two capacitance electrodes 8, capacitor 7 in parallel forms capacitance core group；The first capacitor Electrode and second capacitance electrode have the lead division being stacked；First capacitor electrode 9 and the second capacitance electrode 8 connect respectively Connect the positive and negative anodes of above-mentioned capacitance core group；

Wherein, the lead division of first capacitor electrode 9 is equipped with first capacitor electrode connecting end 91 outstanding；Second capacitor electricity The lead division of pole 8 is equipped with the second capacitance electrode outstanding connecting pin 81.The first capacitor electrode connecting end 91 and the second capacitor Electrode connecting end 81 respectively in power module 1000 the first input bus busbar 40 and the second input bus busbar 30 be electrically connected It connects.Specifically, the first busbar external connection end on the first input bus busbar 40 is electrically connected with first capacitor electrode connecting end 91； The second busbar external connection end on second input bus busbar 30 is electrically connected with the second capacitance electrode connecting pin 81.

The first capacitor electrode 9 and the second capacitance electrode 8 arrange in zigzag, is sheet (or template) structure, first 9 connecting pin 81 of capacitance electrode and the second capacitance electrode connecting pin 81 are located at the middle part of its capacitance core group side.

As shown in Figure 17, Figure 18, first capacitor electrode connecting end 91 is defeated by fixed device (not shown) and first Enter the first busbar external connection end electrical connection of bus busbar 40；Second capacitance electrode connecting pin 81 passes through fixed device and the second input Second busbar external connection end of bus busbar 30 is electrically connected.The fixation device can such as use the combination of bolt, nut, Huo Zheqi He is arbitrarily alternatively fastened and fixed mode.By bolt, nut combination for, the first capacitor electrode connecting end 91 and second Connecting hole is equipped on capacitance electrode connecting pin 81, and (for the sake of difference, the connecting hole on first capacitor electrode connecting end 91 is known as First capacitor electrode connecting hole 910；Connecting hole on second capacitance electrode connecting pin 81 is known as the second capacitance electrode connecting hole 810；) by the external hole on the corresponding connecting hole and input electrode through on capacitance electrode of bolt, then locked by nut, with Corresponding capacitance electrode and input electrode are electrically connected.

Its course of work is described as follows, and the upper bridge chip 13b parallel connection being located on the second input conductive layer 112 becomes upper bridge Power chip group, the lower bridge chip 13a parallel connection on the first input conductive layer 113 is as lower bridge power chip group, by control The grid (pole G) for stating power chip 13 in bridge power chip group and lower bridge power chip group controls the on-off of above-mentioned bridge arm；Its The course of work is described as follows: passing through the second input conductive layer 112 by binding line by the operating current that the second input electrode 3 flows into Bridge arm in inflow, by the power chip 13 (upper bridge chip 13b) on upper bridge arm, Jing Shangqiao source connection 10b flow to output Conductive layer 114 is reserved through binding line to output electrode 5 by output conductive layer 114；By the first input electrode 4 (cathode) through binding The freewheel current that line flows into flows into the first input drainage layer 111 and then separately flows into lower bridge arm by lower bridge source connection 10a On power chip 13 (lower bridge chip 13a), then pass to output conductive layer 114, from output conductive layer 114 by binding line most After flow to output electrode 5.

Embodiment 2

As shown in Figure 19 A- Figure 22, it will be introduced by the power module 1000 and power modules of model B in this example, In its overall structure with have similar design in embodiment 1, but the design and implementation example 1 of electrode is variant.By this implementation Improvement of the example to the source connection 10 of the layout optimization design and new utility model of the circuit figure layer in power module 1000 Design is further illustrated by.

As shown in Figure 19 A, Figure 19 B, Figure 20 A, a kind of power module 1000 is disclosed in this example, wherein the power module 1000 include bottom plate 2, several power cells 1 being arranged on bottom plate 2, and each power cell 1 is connected separately with the first input electricity Pole 4, the second input electrode 3 and output electrode 5；Its each power cell 1 is respectively connected with the first input electrode 4, second input electricity In pole 3 and output electrode 5, with embodiment 1 that the first input electrode 4 in each power cell 1 is integrated into the first input is total Line busbar 40, the mode that the second input electrode 3 is integrated into the second input bus busbar 30 are variant.

When it carries out the connection of upper bridge chip 13b and lower bridge chip 13a in a power cell 1, as an improvement, it is also such as Mode in embodiment 1 is electrically connected using source connection 10.Two source connections 10 are respectively intended to realize bridge Being connected in parallel of chip 13b, lower bridge chip 13a are connected in parallel, and are correspondingly connected with corresponding input electrode or output Electrode 5.For the sake of difference, the source connection 10 connected for realizing sources connected in parallel on upper bridge chip 13b is known as upper bridge source The source connection connected for realizing sources connected in parallel on lower bridge chip 13a is known as lower bridge source connection by pole connector 10b 10a。

Bridge source connection 10b and lower bridge source connection 10a and the mode in embodiment 1 are essentially identical on this, poor Not only in the number of the bridge of welded bridge 101, therefore, details are not described herein again.

Likewise, power cell disclosed in this example is similar with the thinking in embodiment 1, specific structure is micro- variant, Words and phrases combination attached drawing 20B-20E carries out specific explanations explanation.

As shown in Figure 20 B- Figure 20 E, this example will to the optimization of circuit layers of copper 11 disclosed by the utility model be laid out carry out into One step illustrates.As shown in Figure 20 B, 20C, the circuit layers of copper 11 in this example includes that the second input conductive layer 112, first inputs Conductive layer 113 and output conductive layer 114；It is used as preferred mode in example, further includes that the first input drainage layer 111 and control are conductive Layer 115；The first input drainage layer 111 is used to the convenient source electrode with the lower bridge power chip 13 on the first input conductive layer 113 Electrical connection, control conductive layer 115 are used to carry out with the gate pole on each power chip 13 by binding line or other electrical connectors Electrical connection, with input control signal.Then power chip 13, bridge power chip group in formation are set in foregoing circuit layers of copper 11 With lower bridge power chip group, the upper bridge power chip group includes several upper bridge chip 13b, and the lower bridge power chip group includes Several lower bridge chip 13a；The lower bridge power chip group is arranged on the negative conductive layer or output conductive layer 114；It is described Upper bridge chip 13b is arranged on the positive conductive layer.

As seen in fig. 2 od, the second input conductive layer described in the second input conductive layer 112 disclosed in this example includes 3 tunnels the Two input interconnecting pieces 1121,3 tunnel the second input channel portions 1122 and the second chip layout area, the second bridge arm power chip group It is arranged in second chip layout area, 3 tunnel second inputs interconnecting piece 1121 and is electrically connected with second input electrode 4 It connects.Wherein, second chip layout area includes that 4 tunnels second input support arm 1123, the second bridge arm power chip group arrangement In on 4 tunnel second input support arm 1123.In this example, 3 tunnels second input interconnecting piece 1121 and are used to pass through binding line and second Connect portion 303 in second busbar of input bus busbar 30 to be electrically connected；3 tunnel second input interconnecting piece 1121 is separately connected pair The the second input channel portion 1122 answered, and from several second input support arms 1123 are connected thereon, the upper bridge chip 13b is arranged in On above-mentioned second input support arm 1123.In this example, due to the second input bus busbar 30 be used as positive electrode, for external electricity Source anode is electrically connected, therefore, will be from the upper of bridge chip 13b thereon from the electric current that introduces on the second input conductive layer 112 The source electrode on surface is reserved to output electrode 5.

It in this example, is formed inside the second input conductive layer 112 and is left a blank area 1124 there are two first, this first is left a blank area 1124 are mainly used to the first input conductive layer 113 of arrangement and other circuit layers of copper 11 (as control conductive layer 115 and the first input draw Fluid layer 111).In this example, second is additionally provided between each second input support arm 1123 of the second input conductive layer 112 and is left a blank area 1125, this second leave a blank area 1125 be used to arrange control conductive layer 115, the control conductive layer 115 will with binding line or other Electrical connector is electrically connected with the gate pole on upper bridge chip 13b.

In this example, interconnecting piece 1121 is inputted by 3 tunnels second and inputs positive electrode current, to facilitate the electric current point for adjusting each section Cloth.Can also by adjust the second input interconnecting piece 1121 width and binding line number adjust the second input conductive layer 112 and the second current distribution between input electrode 3, it directly affects logical in parasitic inductance and each power chip 13 thereon The current distribution crossed.

As shown in figure 20 E, the first input conductive layer 113 disclosed in this example includes the first input interconnecting piece 1131 and first Support arm 1132 is inputted, which is used to connect in output conductive layer 114 or the second input conductive layer 112 Upper bridge chip 13b source electrode (because the source electrode of upper bridge chip 13b be also electrically connected to output conductive layer 114), this first input branch Lower bridge chip 13a is arranged on arm 1132, the drain electrode of the lower bridge chip 13a is directly electrically connected with the first input conductive layer 113, Directly or indirectly (the first input electrode 4, is the first input bus preferably in this example to its source electrode in this example with external negative electrode Connect portion 403 in the first busbar on busbar 40) electrical connection.In this example, there are thirds between above-mentioned each first input support arm 1132 It leaves a blank area 1133, third area 1133 of leaving a blank is used to arrange its corresponding control conductive layer 115.

It in this example, is routed for convenience, has been preferably provided with one first input drainage layer 111, the first input drainage layer 111 are used to pass through as the articulamentum between lower bridge chip 13a and the first input bus busbar 40, the first input drainage layer 111 Perhaps other electrical connectors are electrically connected and pass through binding line with the source electrode of the lower bridge chip 13a to binding line or other are electrically connected Part is electrically connected with the portion of company in the first busbar of the first input bus busbar 40.

Likewise, using power module 1000 disclosed in this example, due to using source connection 10, existing skill can be substituted Each power chip 13 is arranged corresponding binding line or the mode of other electrical connectors in art, source connection 10 using one at Type, while multiple chips are connected, it is allowed to form current path, simplifies the wiring of module, reduce the wiring inductance of module, together When facilitate installation, its assembly technology can be made simpler, production efficiency is promoted, and enhance its connection reliability, reduced Production cost.

Likewise, the power modules disclosed in this example include power module 1000 and capacitor mould as shown in Figure 21, Figure 22 Block 2000；

Wherein the power module 1000 is the content of the present embodiment middle and upper part description, and capacitance module 2000 includes capacitor electricity Pole and capacitor 7, the capacitance electrode include first capacitor electrode 9 and the second capacitance electrode 8, the first capacitor electrode 9 and Several capacitors 7 being connected in parallel, the first capacitor electrode and second capacitance electrode tool are folded between two capacitance electrodes 8 There is the lead division being stacked；Capacitor 7 in parallel forms capacitance core group；First capacitor electrode 9 and the second capacitance electrode 8 connect respectively Connect the positive and negative anodes of above-mentioned capacitance core group；

Wherein, the lead division of first capacitor electrode 9 is equipped with first capacitor electrode connecting end 91 outstanding；Second capacitor electricity The lead division of pole 8 is equipped with the second capacitance electrode outstanding connecting pin 81.The first capacitor electrode connecting end 91 and the second capacitor Electrode connecting end 81 respectively in power module 1000 the first input electrode 4 and the second input electrode 3 be electrically connected.Specifically, First external connection end of first input electrode 4 is electrically connected with first capacitor electrode connecting end 91；Second in second input electrode 3 External connection end is electrically connected with the second capacitance electrode connecting pin 81.

As shown in Figure 21, Figure 22, first capacitor electrode connecting end 91 is defeated by fixed device (not shown) and first Enter the first external connection portion 41 electrical connection of electrode 4；Second capacitance electrode connecting pin 81 passes through fixed device and the second input electrode 3 The electrical connection of second external connection portion 31.

The fixation device such as can be using bolt, the combination of nut or any other alternative side of being fastened and fixed Formula.By bolt, nut combination for, be equipped on the first capacitor electrode connecting end 91 and the second capacitance electrode connecting pin 81 (for the sake of difference, the connecting hole on first capacitor electrode connecting end 91 is known as first capacitor electrode connecting hole 910 to connecting hole；The Connecting hole on two capacitance electrode connecting pins 81 is known as the second capacitance electrode connecting hole 810；) bolt is corresponding through capacitance electrode On connecting hole and input electrode on external hole, then by nut lock, by corresponding capacitance electrode and input electrode It is electrically connected.Since the first capacitor electrode connecting end 91 and the second capacitance electrode connecting pin 81 are in arranged stacked, so that its Superposed first capacitor electrode connecting end 91 forms the second capacitance electrode connecting pin 81 and blocks, for this reason, it may be necessary to the second electricity Avoid holes 911 are arranged in the top for holding electrode connecting hole 810.

Embodiment 3

As shown in Figure 23-Figure 25, it will be introduced by the power module 1000 and power modules of model C in this example, Its about in input electrode and output electrode 5 with have similar design, but power module 1000 in embodiment 1 and embodiment 2 In circuit figure layer layout designs and embodiment 1 and embodiment 2 it is variant, and using the source in embodiment 1 and embodiment 2 Pole connector 10.This example main purpose is to introduce another kind to have the function for converting original each input electrode to input bus busbar Rate module 1000 and power modules.

As shown in figure 23, in this example, as identical in embodiment 1, the structure of existing power electrode is changed in this example Into by the input electrode merging of the identical polar in original multiple power electrodes, formation input bus busbar；If for example, will Dry first input electrode 4, which merges, forms the first input bus busbar 40；Several second input electrodes 3 are merged and form the second input Bus busbar 30.

Wherein, the first input bus busbar 40 and 30 arranged stacked of the second input bus busbar, so-called stacking cloth It sets, i.e., so that above-mentioned first input bus busbar 40 and the second input bus busbar 30 are arranged such that it is spatially in Lower setting.In this example, the first input bus busbar 40 is located at top, and the second input bus busbar 30 is located at lower part.

The second input bus busbar 30 in this example includes the second busbar main part 302, connects portion 303 and the in the second busbar Two busbar external connection portions 301；The number of the second busbar external connection portion 301 can be one or more.It is preferred that 2 or more, for example, It can be 2, or 3, or 4 or more.In this example, the number and power list of the second busbar external connection portion 301 The number of member 1 is corresponding, and power module 1000 is equipped with 3 power cells 1 (being respectively labeled as 1U, 1W and 1V) in this example, then and the Two busbar external connection portions 301 are also 3.

First input bus busbar 40 in the first busbar main part 402, the first busbar including connecting outside portion 403 and the first busbar Socket part 401 connects portion 403 in first busbar and is connected on power cell 1, and the first busbar external connection portion 401 is from the first busbar main body Extend in portion 402 to outside power module 1000, the first busbar external connection portion 401 is used to be electrically connected with one of electrode of power supply It connects；

Wherein, output electrode 5 includes connecting portion 53 in output main part 52, output external connection portion 51 and output；Wherein, output is outer Socket part 51 is used for external output drive signal；Connect portion 53 in output for being electrically connected with power cell 1.In this example, each input Electrode corresponds to a power cell 1, it will be understood that the power module 1000 in this example includes 3 power cells 1.It is then corresponding, It include 3 output electrodes 5 in power module 1000.

As preferred mode, above-mentioned first input bus busbar 40 is equipped with 3 the first busbar external connection portions 401.Second Input bus busbar 30 is equipped with 3 the second busbar external connection portions 301.Wherein, from above getting off, above-mentioned first input bus busbar 40 and second input bus busbar 30 set in upper and lower level laying up, meanwhile, from the point of view of horizontal space, above-mentioned second input bus busbar 30 3 the second busbar external connection portions 301 and 3 the first busbar external connection portions 401 of the first input bus busbar 40 are set in distance

In this example, as preferred mode, the first busbar external connection portion 401, second of the first input bus busbar 40 Settable external hole in second busbar external connection portion 301 of input bus busbar 30 and the output external connection portion 51 of output electrode 5, passes through The external hole is threadedly coupled with bolt with the cooperation of nut, wherein the number of above-mentioned external hole is not intended to limit, and can be one It is a or multiple.

The shape of above-mentioned first input bus busbar 40, the second input bus busbar 30 and output electrode 5 does not limit especially Fixed, as preferred mode, in this example, whole the second input bus busbar 30 is in zigzag, the first input bus busbar 40 In zigzag, which is in zigzag.

Using the improved first input bus busbar 40 of this example and the second input bus busbar 30.Likewise, its three The input electrode of a power cell 1 is connected in parallel, power distribution to three power cells 1.Such design, is similar to handle The inductance in parallel of the input electrode of three groups of power supplys greatly reduces module commutation circuit inductance, reduces the loss of module.

Likewise, the power modules include power module 1000 and capacitance module 2000 as shown in Figure 24, Figure 25；

Wherein, lead division is equipped with first capacitor electrode connecting end 91 outstanding on first capacitor electrode 9；Second capacitance electrode Lead division is equipped with the second capacitance electrode outstanding connecting pin 81 on 8.The first capacitor electrode connecting end 91 and the second capacitance electrode Connecting pin 81 respectively in power module 1000 the first input bus busbar 40 and the second input bus busbar 30 be electrically connected.Tool Body, the first busbar external connection end on the first input bus busbar 40 is electrically connected with first capacitor electrode connecting end 91；Second The second busbar external connection end on input bus busbar 30 is electrically connected with the second capacitance electrode connecting pin 81.

As shown in Figure 24, Figure 25, first capacitor electrode connecting end 91 is defeated by fixed device (not shown) and first Enter the first busbar external connection end electrical connection of bus busbar 40；Second capacitance electrode connecting pin 81 passes through fixed device and the second input Second busbar external connection end of bus busbar 30 is electrically connected.The fixation device can such as use the combination of bolt, nut, Huo Zheqi He is arbitrarily alternatively fastened and fixed mode.By bolt, nut combination for, the first capacitor electrode connecting end 91 and second Connecting hole is equipped on capacitance electrode connecting pin 81, and (for the sake of difference, the connecting hole on first capacitor electrode connecting end 91 is known as First capacitor electrode connecting hole 910；Connecting hole on second capacitance electrode connecting pin 81 is known as the second capacitance electrode connecting hole 810；) by the external hole on the corresponding connecting hole and input electrode through on capacitance electrode of bolt, then locked by nut, with Corresponding capacitance electrode and input bus busbar are electrically connected.

Embodiment 4

As shown in Figure 26-Figure 31, it will be introduced by the power module 1000 and power modules of model D in this example, In its overall structure with have similar design in embodiment 1, but the layout designs of the circuit figure layer in power module 1000 are real It is variant to apply example 1.The claimed following innovative point of the utility model to be further illustrated by: being connected about source electrode The optimization design of part 10 and the optimization design of input electrode.

As shown in Figure 26, Figure 27, power module 1000 disclosed in this example include equally bottom plate 2, are arranged on bottom plate 2 Power cell 1, the power cell 1 includes substrate 12, circuit layers of copper 11 and power chip group, the circuit layers of copper 11 formation On the substrate 12, the power chip group is arranged in the circuit layers of copper 11；Power chip group includes upper bridge power core Piece group and lower bridge power chip group；This example and embodiment 1 use similar design, are changed to the structure of existing power electrode Into by the input electrode merging of the identical polar in original multiple power electrodes, formation input bus busbar；If for example, will Dry first input electrode 4, which merges, forms the first input bus busbar 40；Several second input electrodes 3 are merged and form the second input Bus busbar 30.

The first input bus busbar 40 and 30 arranged stacked of the second input bus busbar, so-called arranged stacked, i.e., So that above-mentioned first input bus busbar 40 and the second input bus busbar 30 are arranged such that it is spatially in and divide into It sets.In this example, the first input bus busbar 40 is located at top, and the second input bus busbar 30 is located at lower part.

About above-mentioned first input bus busbar 40 and the second input bus busbar 30, structure and connection type and implementation Bus busbar in example 1 is identical, repeats no more.

Likewise, the input electrode of three power cells 1 is connected in parallel in this example, power distribution to three power Unit 1.Such design is similar to the inductance in parallel of the input electrode three groups of power supplys, and the module change of current greatly reduces and returns Road inductance reduces the loss of module.

In this example, also as in Example 1, it is respectively intended to realize upper bridge chip 13b using two source connections 10 Be connected in parallel, lower bridge chip 13a is connected in parallel, and be correspondingly connected with corresponding input electrode (or inlet highway be total Row) or output electrode 5.Likewise, the source connection 10 connected for realizing sources connected in parallel on upper bridge chip 13b is known as The source connection connected for realizing sources connected in parallel on lower bridge chip 13a is known as lower bridge source electrode by upper bridge source connection 10b Connector 10a.

As shown in Figure 26, Figure 27, bridge source connection 10b and lower bridge source connection 10a is in king's font thereon.Specifically , as shown in figure 28, disclose the lower bridge source connection 10a of a Seed King font comprising be located in the middle 102 He of confluence portion The welded bridge 101 being connected in confluence portion 102 forms the weld part welded with lower bridge chip 13a on each welded bridge 101 It arches upward to form the relief portion 1012 of evacuation between 1011 and weld part 1011.It is similar in its specific connection type such as embodiment 1, It repeats no more.

As shown in figure 29, the upper bridge source connection 10b of a Seed King font is disclosed in this example；The upper bridge source electrode connection Part 10b includes confluence portion 102 and the welded bridge 101 that is connected in confluence portion 102, is formed and upper bridge core on each welded bridge 101 It arches upward to form the relief portion 1012 of evacuation between the weld part 1011 and weld part 1011 that piece 13b is welded, wherein confluence Portion 102 is equipped with cathode confluence end 102b, and cathode confluence end 102b and output conductive layer 114 are welded to connect, output conduction Layer 114 is electrically connected by binding line with output electrode 5.It is of course also possible to consider to cancel the output conductive layer 114, it directly should The cathode confluence end 102b of upper bridge source connection 10b is welded direct in the output electrode 5, or is connected by binding line Onto output electrode 5.

It is also disclosed as shown in Figure 30, Figure 31, in this example a kind of based on the encapsulation of power module 1000 formation above-mentioned in this example Power modules, after this example will combine the first power module 1000 disclosed by the utility model with capacitance module 2000 The power modules of formation carry out specific explanations explanation.

Source connection 10 disclosed in this example can also substitute each power chip in the prior art and corresponding binding line is arranged Or the mode of other electrical connectors, source connection 10 connect multiple chips using integrated molding, are allowed to form electric current Access simplifies the wiring of module, reduces the wiring inductance of module, while facilitating installation, can make its assembly technology more Simply, production efficiency is promoted, and enhances its connection reliability, reduces production cost.

A kind of power modules disclosed in this example, as shown in Figure 30, Figure 31, which includes power module 1000 and electricity Molar block 2000；

As shown in Figure 30, Figure 31, first capacitor electrode connecting end 91 is defeated by fixed device (not shown) and first Enter the first busbar external connection end electrical connection of bus busbar 40；Second capacitance electrode connecting pin 81 passes through fixed device and the second input Second busbar external connection end of bus busbar 30 is electrically connected.The fixation device can such as use the combination of bolt, nut, Huo Zheqi He is arbitrarily alternatively fastened and fixed mode.By bolt, nut combination for, the first capacitor electrode connecting end 91 and second Connecting hole is equipped on capacitance electrode connecting pin 81, and (for the sake of difference, the connecting hole on first capacitor electrode connecting end 91 is known as First capacitor electrode connecting hole 910；Connecting hole on second capacitance electrode connecting pin 81 is known as the second capacitance electrode connecting hole 810；) by the external hole on the corresponding connecting hole and input electrode through on capacitance electrode of bolt, then locked by nut, with Corresponding capacitance electrode and input electrode are electrically connected.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims

1. a kind of power module of multiple-way supply placement-and-routing, including bottom plate and the power cell being set on bottom plate, output electricity Pole and input electrode；The input electrode includes the first input electrode, the second input electrode；

The power cell includes substrate, circuit layers of copper and power chip group, and the circuit layers of copper is formed on the substrate, institute Power chip group is stated to be arranged in the circuit layers of copper；The circuit layers of copper includes the first input conductive layer, the second input conduction Layer and output conductive layer；The power chip group includes the first bridge arm power chip group and the second bridge arm power chip group；

The first input conductive layer is directly or indirectly electrically connected with first input electrode, the second input conductive layer Directly or indirectly it is electrically connected with second input electrode；

It is characterized in that, it is described second input conductive layer include multichannel second input interconnecting piece, multichannel the second input channel portion and Second chip layout area, multichannel second input interconnecting piece and pass through multichannel the second input channel portion and second chip layout area electricity Connection；

The second bridge arm power chip group is arranged in second chip layout area, the multichannel second input interconnecting piece with The second input electrode electrical connection.

2. the power module of multiple-way supply placement-and-routing according to claim 1, which is characterized in that the second input electricity Extremely upper correspondence is divided into multichannel, inputs interconnecting piece with the multichannel second on the second input conductive layer and is electrically connected.

3. the power module of multiple-way supply placement-and-routing according to claim 1, which is characterized in that the circuit layers of copper packet Include the first input drainage layer, the first input conductive layer, the second input conductive layer and output conductive layer；

4. the power module of multiple-way supply placement-and-routing according to claim 3, which is characterized in that the second chip cloth Setting area includes several second input support arms, and the second bridge arm power chip group is arranged on several second input support arms.

5. the power module of multiple-way supply placement-and-routing according to claim 4, which is characterized in that second input is led It is formed with first inside electric layer to leave a blank area, described first, which leaves a blank, is disposed with the first input conductive layer and the first input drainage in area Layer.

6. the power module of multiple-way supply placement-and-routing according to claim 3, which is characterized in that in the circuit layers of copper It is additionally provided with several control conductive layers.

7. the power module of multiple-way supply placement-and-routing described in any one of -6 according to claim 1, which is characterized in that institute It states the first input electrode on multiple power cells and is integrated into the first input bus busbar；

8. a kind of power modules of multiple-way supply placement-and-routing, including power module and capacitance module, which is characterized in that the function Rate module is power module described in any one of claim 1-7.