CN108735936A

CN108735936A - Battery module, battery pack and vehicle

Info

Publication number: CN108735936A
Application number: CN201810350194.6A
Authority: CN
Inventors: 柳在旭; 姜达模; 金秀彰; 文祯晤; 尹智秀
Original assignee: LG Chemical Co Ltd
Current assignee: LG Energy Solution Ltd
Priority date: 2017-04-18
Filing date: 2018-04-18
Publication date: 2018-11-02
Anticipated expiration: 2038-04-18
Also published as: WO2018194296A1; CN208078066U; CN108735936B

Abstract

Battery module, battery pack and vehicle are disclosed, which there can be low height and ensure that stable cooling performance, the battery pack and vehicle include the battery module.The battery module, which has, is arranged in thermal component at its underpart, which includes：Uni-body components, the uni-body components have the multiple can type secondary batteries stacked in the form of horizontal in the horizontal direction；And busbar, the busbar has interconnecting piece and heat transmitting member, interconnecting piece is configured to the electrode of two or more can type secondary batteries of contact uni-body components, two or more can type secondary batteries to be electrically connected, heat transmitting member is located at below interconnecting piece to contact thermal component, to which the heat of secondary cell is transmitted to thermal component, which is made of an electrically conducting material at least partly.

Description

Battery module, battery pack and vehicle

Cross reference to related applications

This application claims the South Korea patent application No.10-2017-0049938 submitted on April 18th, 2017 in South Korea and The priority for the South Korea patent application No.10-2018-0026447 that on March 6th, 2018 submits, it is open to be incorporated by reference into this Text.

Technical field

This disclosure relates to the battery module with multiple can type secondary batteries, and more particularly, to can ensure The battery module of low clearance, and the battery pack etc. including the battery module are designed to have while stablizing cooling performance.

Background technology

Recently, as the demand for portable electronic product such as camera and portable phone has sharp increased And using and developing for energy storage batteries, vehicle, robot, satellite etc. has expanded, and the battery pack used wherein becomes It obtains and is paid high attention to and obtain active research.

Battery module or battery pack generally comprise at least one secondary cell of also known as monomer.In addition, Current commercial The secondary cell of change includes nickel-cadmium cell, Ni-MH battery, nickel-zinc cell, lithium secondary battery etc..Among them, due to such as by It is freely charged and discharged caused by basic memory-less effect, low-down self-discharge rate and the advantages of high-energy density, lithium is secondary Battery is more exposed to concern compared with Ni-based secondary cell.

Lithium secondary battery mainly uses lithium base oxide and carbonaceous material as active positive electrode material and negative electrode respectively Active material.In addition, lithium secondary battery includes electrode assembly and battery case, arrangement is coated with positive electrode and lives in electrode assembly The positive electrode plate of property material and the negative electrode plate coated with negative electrode active material, separator are placed into positive electrode plate and negative electrode Between plate, battery case accommodates the electrode assembly together with electrolyte in the form of salable.

Meanwhile according to the type of battery case, lithium secondary battery can be classified into wherein electrode assembly and be included in gold Belong to the can type secondary battery in tank and wherein electrode assembly is included in the bag type secondary battery in the bag made of aluminum-laminated sheets. In addition, the shape depending on metal can, can type secondary battery can also be classified into cylindrical battery and rectangular battery.Rectangle or The outside of person's column secondary battery includes having the shell (i.e. battery can) of open end and being connected to battery in the form of salable The cap assembly of the open end of tank.

Battery module can be configurable to include multiple can type secondary batteries.At this point, multiple can type secondary battery is frequent It is arranged to upper in above-below direction erect to cool down.In battery module, be especially mounted to electric vehicle etc., be used for vehicle Battery module situation in, cooling device be commonly located in the lower part of battery module or battery module below to cool down battery Module.It in this case, can be by the bottom of all batteries if can type secondary battery is configured to upper standing in above-below direction Portion is connected to cooling device.

However, if battery module is constructed such that multiple can type secondary battery is erected in the up-down direction so as to cold But, then it is difficult to the height of battery module being decreased below specified level.Certain battery modules are especially used for the battery of vehicle Module needs to be designed to have low height.Moreover, for most of electric vehicles, battery module is commonly located at vehicle At lower part.In this case, since the size of vehicle or structure limit, the height of battery module should be restricted to specific water It is flat.However, because can type secondary battery usually has given specification, it is difficult to arbitrarily reduce the length of can type secondary battery Degree, i.e. height.Therefore, if battery module is constructed such that can type secondary battery erects, the height of battery module cannot Less than the height of can type secondary battery.In order to reduce the height of battery module, the height of can type secondary battery is made it below, it is desirable that It correspondingly redesigns and manufactures secondary cell, however which increase cost and time and therefore efficiency is made to deteriorate.In addition, taking Certainly in application, such as vehicle, battery module can have different height, and be individually the different secondary electricity of vehicle manufacture Pond is not so ideal.Therefore, when being applied to vehicle, there is the battery mould for the can type secondary battery for being configured to erect Block may cause various problems, such as increase height of car or reduce vehicle bottom.

Meanwhile in order to reduce the height of battery module, can type secondary battery can be configured to horizontal in the horizontal direction. However, in such configuration, in addition to the can type secondary battery stacked at lower side, the can type secondary battery of stacking at upside The cooling device below battery module cannot directly be contacted.Therefore, it is necessary to which individual cooling component is such as cooling Pipe or cooling fin are set to the side of battery module, and the heat of each secondary cell is transmitted to cooling device.However, In this situation, because individual cooling structure such as cooling tube or cooling fin should be arranged, battery module has complexity Structure, need difficult assembling and there is increased weight, and energy density by inevitably with by cooling component The space occupied reduces equally bigly.Moreover, multiple battery modules can be arranged in battery pack in the horizontal direction, and In this case, if individual cooling component such as cooling tube or cooling fin are set to each battery module, with Upper problem may become more serious.

Invention content

Technical problem

The disclosure aims to solve the problem that problem of the prior art, and therefore this disclosure relates to provide a kind of battery module and one kind Battery pack including the battery module, the battery module can in the case where not changing the design of usual can type secondary battery with Non-complex structure with low height, ensure to stablize cooling performance and with high-energy density.

The these and other objects and advantage of the disclosure can understand and by showing from the disclosure from following detailed description Example property embodiment becomes more fully apparent.And will be apparent from, hand shown in appended claims and combinations thereof can be passed through The objects and advantages of the Duan Shixian disclosure.

Technical solution

In one aspect of the present disclosure, a kind of battery module is provided, which includes being arranged in dissipating at its underpart Thermal part, the battery module include：Uni-body components, the uni-body components are multiple with what is stacked in the form of horizontal in the horizontal direction Can type secondary battery；And there is interconnecting piece and heat transmitting member, the interconnecting piece to be configured to contact monomer group for busbar, the busbar Two or more can type secondary batteries are electrically connected, the heat by the electrode of two or more can type secondary batteries of part Site of delivery below the interconnecting piece to contact thermal component, to which the heat of secondary cell is transmitted to thermal component, the busbar It is made of an electrically conducting material at least partly.

Here, busbar can have twisted plate form, wherein interconnecting piece to be configured to exist along the side of uni-body components It is erected in upper and lower directions, and heat transmitting member is configured to horizontal in the horizontal direction to be placed into the lower part of uni-body components and dissipate Between the top of thermal part.

In addition, busbar may include positive electrode busbar and negative electrode busbar, which has contact There is contact to be arranged in list for the interconnecting piece of the positive electrode for the can type secondary battery being arranged in uni-body components, the negative electrode busbar The interconnecting piece of the negative electrode of can type secondary battery in body component.

In addition, positive electrode busbar and negative electrode busbar can be located at the two opposite sides of uni-body components so that positive electricity The heat transmitting member of pole busbar and negative electrode busbar is bent in the opposite direction.

In addition, positive electrode busbar and negative electrode busbar can be in contact with single thermal component.

In addition, the battery module may further include heat pad piece, heat pad piece is placed into positive electrode busbar and negative electrode Between at least one of busbar and thermal component, the heat of busbar is transmitted to thermal component, heat pad piece is by being electrically insulated Material is made.

In addition, busbar may further include portion of terminal, which provides the end for electrically connecting to external component Son.

In addition, portion of terminal can be bent on the direction towards the top of uni-body components at the top of interconnecting piece.

In addition, two or more portion of terminal can be arranged at single busbar, to be spaced with preset distance It opens.

In addition, the battery module according to the disclosure may further include module housing, which includes first shell Body and second shell, the first shell have the empty space formed in the first shell to accommodate one of uni-body components Point, which has the empty space formed in the second shell to accommodate another part of uni-body components, and the One shell and second shell can be configured to couple at the side and the other side in uni-body components respectively.

In addition, busbar can be attached to the outside of module housing.

In addition, module housing can have the connection groove formed wherein so that busbar is at least partially inserted In the connection groove.

In another aspect of the disclosure, a kind of battery pack of the battery module including the disclosure is also provided.

In another aspect of the disclosure, a kind of vehicle of the battery module including the disclosure is also provided.

Advantageous effect

In accordance with an embodiment of the present disclosure, because multiple can type secondary battery by the form of horizontal arrange, by Use common secondary cell, battery module that can be configured to the height for having low in the case of not changing its design.

In addition, in accordance with an embodiment of the present disclosure, even if individual cooling component such as cooling tube and cooling fin are not arranged In the side of battery module, remain able to ensure efficient battery module cooling.

Particularly, when thermal component is such as heat sink, cooling tube and cooling fin are arranged at the lower part of battery module, institute There is the heat of secondary cell to be successfully transmitted to thermal component, therefore ensures that stable battery module cooling performance.

In addition, because individual cooling component, the structure of battery module is not required individually to be simplified, thus permit Perhaps it readily manufactures, reduce weight and manufacturing cost and increase energy density.

Description of the drawings

Attached drawing illustrates preferred embodiment of the present disclosure and is used to provide disclosed technique spy together with foregoing disclosure Sign is further understood, and therefore, the disclosure is not understood to be limited to draw.

Fig. 1 is the perspective view for showing battery module according to an embodiment of the present disclosure in the assembled state.

Fig. 2 is the decomposition perspective view for showing battery module according to an embodiment of the present disclosure.

Fig. 3 is the viewgraph of cross-section for roughly showing can type secondary battery according to an embodiment of the present disclosure.

Fig. 4 is the figure for the thermal transfer construction for roughly showing battery module according to an embodiment of the present disclosure.

Fig. 5 is the viewgraph of cross-section for roughly showing battery module according to another embodiment of the present disclosure.

Fig. 6 is roughly to show that positive electrode busbar according to an embodiment of the present disclosure is detached transversal from uni-body components Face view.

Fig. 7 is roughly to show that negative electrode busbar according to an embodiment of the present disclosure is detached transversal from uni-body components Face view.

Fig. 8 is roughly to show that certain portion of terminal of busbar are set in battery module according to an embodiment of the present disclosure It is set to the perspective view of standing.

Fig. 9 is roughly to show the connected figure of multiple battery modules according to an embodiment of the present disclosure.

Figure 10 is the enlarged view for the part A2 for showing Fig. 2.

Figure 11 is the enlarged view for the part A3 for showing Fig. 2.

Figure 12 is the perspective view for roughly showing battery module according to another embodiment of the present disclosure.

Figure 13 is the front sectional view for the part A4 for showing Figure 12.

Figure 14 is the connected figure of multiple battery modules roughly shown according to another embodiment of the present disclosure.

Reference numerals list

10：Thermal component

100：Uni-body components

110：Secondary cell

200：Busbar

201：Positive electrode busbar

202：Negative electrode busbar

210：Interconnecting piece

220：Heat transmitting member

230：Portion of terminal

300：Heat pad piece

400：Module housing

401：First shell

402：Second shell

510：Connecting component for positive electrode

520：Connecting component for negative electrode

Specific implementation mode

Hereinafter, preferred embodiment of the present disclosure will be described in detail with reference to the attached drawings.Before describing, it should be appreciated that saying The term used in bright book and appended claims is not construed as being limited to general and dictionary meaning, but is based on The principle that the present inventor suitably defines term for best explanation is allowed to be based on contain corresponding in terms of disclosed technique Justice and concept explanation.

Therefore, the explanation provided herein is only not intended to be limiting the model of the disclosure only for the preferred embodiment of signal It encloses, accordingly, it should be understood that other equivalent and modification can be made without departing from disclosure range to this.

Fig. 1 is to show the perspective view of battery module according to an embodiment of the present disclosure in the assembled state, and Fig. 2 is to show Go out the decomposition perspective view of battery module according to an embodiment of the present disclosure.Particularly, Fig. 2 is the battery module observed from below Perspective view.

With reference to figure 1 and Fig. 2, the battery module according to the disclosure may include uni-body components 100 and busbar 200.In addition, At the battery module lower part that thermal component 10 can be disposed in.

Such as schematically by the arrow in Fig. 1, thermal component 10 can be constructed such that coolant inside it space or It is flowed in person's lower space.Here, coolant can be liquid either gas such as cooling water or air.Thermal component 10 can To absorb the heat of uni-body components 100 and busbar 200 and the heat be transmitted to coolant by contacting coolant.For example, Thermal component 10 can make air be flowed at its underpart or make cooling water etc. with pipe shape with heat sink form Flow through its cavity.

Thermal component 10 can be the external component of battery module, be such as installed to as the independent component with battery module The component of vehicle.Alternatively, thermal component 10 can be included as the component of battery module.

Uni-body components 100 may include multiple can type secondary batteries 110.Here, can type secondary battery 110 can be such Construction so that electrode assembly and electrolyte are accommodated in battery case, i.e., in battery can, and cap assembly can be coupled to electricity The open end of pond tank.

Fig. 3 is the viewgraph of cross-section for roughly showing can type secondary battery 110 according to an embodiment of the present disclosure.

With reference to figure 3, can type secondary battery 110 may include electrode assembly 111, battery can 112 and cap assembly 113.

Electrode assembly 111 can have the following structure, wherein positive electrode plate and negative electrode plate are wound, and separator is set to Enter between positive electrode plate and negative electrode plate.Positive electrode tab 114 can be attached to positive electrode plate and be connected to cap assembly 113, and negative electrode tab 115 can be attached to negative electrode plate and be connected to the lower end of battery can 112.

Battery can 112 can have the empty space formed wherein with accommodate electrod component 111.Particularly, battery can 112 can have with open-topped cylindrical or rectangular shape.In addition, battery can 112 can be by metal material such as Steel or aluminium are made to ensure rigidity.Moreover, negative electrode tab can be attached to the lower end of battery can so that under battery can Portion or entire battery can functionally be used as negative electrode terminal.

Cap assembly 113 can be coupled to the open top of battery can 112 with the open end of sealed cell tank.Cap assembly 113 can have round or rectangular shape according to the shape of battery can and may include such as top cap c1, safe ventilation mouth The component of c2 and washer c3.

Here, top cap c1 can be located at the top of cap assembly and project upwards.Particularly, top cap can be in pot two It is used as positive electrode terminal at primary cell 110.Therefore, top cap can be electrically connected to by busbar external device (ED) such as another Secondary cell, load and charging unit.Top cap can for example be made of metal material such as stainless steel or aluminium.

If the internal pressure that safe ventilation mouth c2 can be configured to the i.e. battery can of internal pressure of secondary cell increases Then make safe ventilation mouth c2 shape distortions more than to specified level.In addition, washer c3 can be by the material system with electrical insulating property At so that the edge portions of top cap and safe ventilation mouth can be insulated from battery can.

Meanwhile cap assembly may further include current interruptions component c4.Current interruptions component is also called CID (electric currents Interruption means).If the internal pressure of battery increases the shape reversion so that safe ventilation mouth since gas generates, pacifying Contact between all-pass gas port and current interruptions component is cut off or current interruptions component disconnects, and is thus interrupted in safe ventilation Electrical connection between mouth and electrode assembly.

When submitting this application, to those skilled in the art, the construction of can type secondary battery 110 be it is well known simultaneously And it is therefore not described in detail herein.In addition, even if Fig. 3 shows an example of can type secondary battery, according to the electricity of the disclosure Pond module is still not limited to any specific can type secondary battery.I.e., it is possible to using when submitting this application known various two Primary cell is as the battery module according to the disclosure.

In addition, even if showing the can type secondary battery 110 of Fig. 3 based on column secondary battery, rectangle two can also be applied Primary cell is as the battery module according to the disclosure.

Uni-body components 100 can be constructed such that multiple can type secondary batteries 110 are stacked on wherein.For example, this is more A can type secondary battery 110 can be arranged in the horizontal direction.In addition, multiple can type secondary battery 110 can be by upper Lower section is arranged upwards.In addition, multiple can type secondary battery 110 can be stacked as so that their side surface is in face of cylinder The curved surface of battery can.

Particularly, in the battery module according to the disclosure, multiple can type secondary battery 110 of uni-body components 100 can With horizontal in the horizontal direction.That is, as shown in FIG. 2, each can type secondary battery 110 can be configured in right and left Extend (on the x-axis direction in drawing) upwards.At this point, the positive electrode terminal and negative electricity of each can type secondary battery 110 Extreme son can be located at left side or right side.

According to this construction of the disclosure, battery module can have the height reduced.That is, if making can type secondary battery 110 horizontal, then battery module can be configured to that there is the height more shorter than the length of can type secondary battery.Thus, it is easy to set Count the battery module with low height.

The multiple can type secondary battery being arranged in uni-body components 100 can be electrically connected to each other by busbar 200, such as All secondary cells or certain secondary cells are electrically connected to each other.For this purpose, at least part of busbar 200 can be by leading Electric material is made.For example, busbar 200 can be made of metal material such as copper, aluminium or nickel.

Particularly, in the disclosure, as shown in FIG. 2, busbar 200 may include interconnecting piece 210 and heat transmitting member 220。

Two or more can type secondary batteries 110 being arranged in uni-body components 100 can be electrically connected by interconnecting piece 210. For this purpose, interconnecting piece 210 can contact the electricity for two or more can type secondary batteries 110 being arranged in uni-body components 100 Pole.For example, interconnecting piece 210 can contact the electrode for all secondary cells 110 being arranged in uni-body components 100 will own Secondary cell 110 be electrically connected to each other.In addition, interconnecting piece 210 can contact this two be arranged in uni-body components 100 or more They to be connected in parallel by the identical polar of more can type secondary batteries 110.Alternatively, interconnecting piece 210 can contact setting and exist They to be electrically connected to each other by the electrode of certain secondary cells in all secondary cells in uni-body components 100.

Heat transmitting member 220 can be located at 210 lower section of interconnecting piece.In addition, thermal component 10 can be disposed in heat transmitting member 220 lower sections.Heat transmitting member 220 can transfer heat to this thermal component 10.That is, being produced from the secondary cell of uni-body components 100 Raw heat can be passed to interconnecting piece 210, and heat transmitting member 220 can transfer to the secondary cell of interconnecting piece 210 Heat is transmitted to thermal component 10.In addition, heat transmitting member 220 can contact thermal component 10 to transmit heat with conductive fashion.

Fig. 4 is the figure for the thermal transfer construction for roughly showing battery module according to an embodiment of the present disclosure.For example, Fig. 4 It can be considered as roughly being showing along the cross-sectional configuration of the line A1-A1 ' interceptions of Fig. 1.However, Fig. 4 does not have all of depiction 1 Component but certain components are only shown for convenience's sake.Meanwhile in Fig. 4, arrow indicates heat transfer path.

With reference to figure 4, the heat generated from the secondary cell stacked in the up-down direction on the ground (can be painted in the horizontal direction Left and right directions on figure) on move and be then passed to interconnecting piece 210, interconnecting piece 210 is located at the side of secondary cell And it is vertically erected relative to ground.In addition, being transmitted to the heat of interconnecting piece 210 can move down and be passed under it The heat transmitting member 220 of side.Moreover, heat transmitting member 220 is directly or indirectly contacted with thermal component 10 below.Therefore, hot The heat of transfer part 220 can be passed to thermal component 10 and is then discharged by coolant.

In this construction of the disclosure, busbar 200 simultaneously can be electrically connected and cool down secondary cell.In other words, If using the busbar 200 according to the disclosure, multiple secondary cells can be electrically connected to each other by interconnecting piece 210, and And secondary cell can also be cooled down by the heat of secondary cell is transmitted to thermal component 10 with heat transmitting member 220.

In addition, if all secondary cells being arranged in uni-body components 100 are connected to interconnecting piece 210, then it is each The heat of a secondary cell can be transmitted to interconnecting piece 210, and the heat for being transmitted to interconnecting piece 210 can be transmitted to hot transmission It portion 220 and thermal component 10 and is then discharged by coolant.It in this case, because can be by conducting discharge setting The heat of all secondary cells in uni-body components 100, so each secondary cell can be cooled efficiently.Therefore, According to this construction, it is not necessary that cooling component is individually arranged between secondary cell.Therefore, battery module can have non-complex Structure, the weight and volume of reduction and the energy density of raising.

Busbar 200 can have plate shape.Moreover, busbar 200 can be constructed with form of a metal plate to ensure just Degree and electric conductivity.Particularly, in the disclosure, busbar 200 can be constructed in the form of twisted plate.

For example, as shown in Figures 1 and 2, busbar 200 can be with the plate shape that its lower end is bent with about 90 degree Formula.In this case, it is based on bending part, the top of busbar 200 may be used as interconnecting piece 210, and lower part may be used as Heat transmitting member 220.

Particularly, interconnecting piece 210 can be configured to a left side for the side such as uni-body components 100 along uni-body components 100 Side or right side erect on (the z-axis line direction in drawing) in above-below direction.That is, in the disclosure, if uni-body components 100 Can type secondary battery by it is long by (the x-axis direction in drawing) in left and right directions, in the form of horizontal in front-rear direction (in drawing Y-axis direction) on and/or stack on (the z-axis line direction in drawing) in above-below direction, then the electrode of several secondary cells can To be parallelly arranged on front-rear direction and upper and lower directions.Therefore, the interconnecting piece 210 with flat pattern is configured to preceding It is stood in rear direction and upper and lower directions flat so that interconnecting piece 210 can be in direct contact with the electrode of several secondary cells.

In addition, heat transmitting member 220 can be configured to horizontal in the horizontal direction.For example, heat transmitting member 220 can be by structure It causes so that its surface is parallel to x-y plane.In this case, as shown in FIG. 4, heat transmitting member 220 can be placed into Between the lower part and the top of thermal component 10 of uni-body components 100.

Interconnecting piece 210 and heat transmitting member 220 can be configured to single plate, such as the single metal plate being bent.Herein In situation, busbar 200 may insure easily fabricated and simple structure.

Meanwhile it may include positive electrode and negative electrode that each secondary cell in uni-body components 100, which is arranged,.Busbar 200 can have at least two busbars 200 to be separately connected the positive electrode and negative electrode of secondary cell.That is, busbar 200 can To include positive electrode busbar 201 and negative electrode busbar 202.

Here, the interconnecting piece 210 of positive electrode busbar 201 can be with the secondary electricity of pot that is arranged in uni-body components 100 The positive electrode (positive electrode terminal) in pond is in contact.Therefore, positive electrode busbar 201 can be by the positive electricity of several can type secondary batteries Pole is electrically connected to each other.The interconnecting piece 210 of negative electrode busbar 202 can be with the secondary electricity of pot that is arranged in uni-body components 100 The negative electrode (negative electrode terminal) in pond is in contact.Therefore, negative electrode busbar 202 can be by the negative electricity of several can type secondary batteries Pole is electrically connected to each other.

For example, with reference to the construction of Fig. 2, two busbars can be disposed at the side of uni-body components 100.At this point, one A busbar can be positive electrode busbar 201 and another busbar can be negative electrode busbar 202.In addition, setting The positive electrode of all can type secondary batteries in uni-body components 100 can be in contact and by that with positive electrode busbar 201 This connection, and the negative electrode for all can type secondary batteries being arranged in uni-body components 100 can be with negative electrode busbar 202 It is in contact and is in contact with each other.

Preferably, positive electrode busbar 201 and negative electrode busbar 202 can be based on uni-body components 100 positioned at opposite two At side.

Each can type secondary battery being arranged in uni-body components 100 can be formed to extend in one direction. In addition, each can type secondary battery can have the positive electrode terminal arranged at two opposite sides in their longitudinal direction and bear Electrode terminal.Particularly, multiple can type secondary battery can be become water in the form of horizontal with their longitudinal direction Square to form arrangement so that positive electrode terminal and negative electrode terminal are located at multiple can type secondary battery in the horizontal direction On both ends at.In addition, multiple can type secondary battery can be arranged such that its positive electrode terminal is located at the same side And negative electrode terminal is located at the same side.Therefore, positive electrode busbar 201 and negative electrode busbar 202 can be based on secondary Battery is located at two opposite sides.

For example, as shown in FIG. 2, secondary cell can be formed to stretch (on x-axis direction) in the lateral direction It is long so that positive electrode terminal and negative electrode terminal are respectively disposed at the right side and left side of secondary cell.Therefore, positive electrode Busbar 201 can be disposed at the right side of uni-body components 100, and negative electrode busbar 202 can be disposed in monomer At the left side of component 100.

In this case, positive electrode busbar 201 and negative electrode busbar 202 can be constructed such that heat transmitting member 220 are bent in the opposite direction.In other words, the lower end of positive electrode busbar 201 and negative electrode busbar 202 can be bent to So that being defined as interconnecting piece 210 and heat transmitting member 220 based on bending part.At this point, positive electrode busbar 201 and negative electrode converge Stream item 202 can be bent in the opposite direction.

For example, in fig. 2, the lower end of positive electrode busbar 201 can by left direction (on-x-axis direction) Bending.In addition, the lower end of negative electrode busbar 202 can be by the bending (on+x-axis direction) in right direction.That is, positive electricity It the lower end of pole busbar 201 and negative electrode busbar 202 can be by toward each other, i.e., on the direction that lower end becomes close to each other Bending.Using this curved configuration, the heat transmitting member 220 of positive electrode busbar 201 and negative electrode busbar 202 can such as scheme It is placed into shown in 4 between uni-body components 100 and thermal component 10.Particularly, 210 He of interconnecting piece of positive electrode busbar 201 The interconnecting piece 210 of negative electrode busbar 202 can by the longitudinal direction of secondary cell (on x-axis direction) with pre- spacing From being separated from each other with parallel to each other.In addition, the heat of the heat transmitting member 220 and negative electrode busbar 202 of positive electrode busbar 201 Transfer part 220 can be configured to be placed in single plane under the horizontal state under two surface faces upward.

According to this construction of the disclosure, the gap between uni-body components 100 and thermal component 10 can narrow, and The heat transmitting member 220 of 202 the two of positive electrode busbar 201 and negative electrode busbar can connect with single thermal component 10 It touches.Therefore, in this case, battery module can have the volume reduced, the cooling construction of simplification and further increase cold But efficiency.

Meanwhile for simplified and efficient cooling construction, positive electrode busbar 201 and negative electrode busbar 202 can To be in contact with single thermal component 10.In this case, heat pad piece may further include according to the battery module of the disclosure 300。

Heat pad piece 300 can be placed at least one of positive electrode busbar 201 and negative electrode busbar 202 and heat dissipation Between component 10.For example, as shown in Fig. 1 and Fig. 4, the heat transmitting member of positive electrode busbar 201 and negative electrode busbar 202 220 lower surface can be in contact with the upper surface of same thermal component 10.

In addition, the heat of busbar can be transmitted to thermal component 10 by heat pad piece 300.Correspondingly, heat pad piece 300 can be by Thermally conductive materials are made.

However, heat pad piece 300 can be made of the not substantive electrically insulating material flowed through of electric current, to prevent in positive electrode Short circuit between busbar 201 and negative electrode busbar 202.In addition, thermal component 10 can be made of metal etc., and even if In this case, heat pad piece 300 still can prevent positive electrode busbar 201 and negative electrode busbar 202 by thermal component 10 It connects and therefore causes short circuit.

As described above, heat pad piece 300 can be made of the material with thermal conductivity and electrical insulating property.For example, heat pad piece 300 It can be made of silicon, acryl etc..

It is further preferred that heat transmitting member 220 can have the protrusion formed at its underpart.This will be below with reference to Fig. 5 more Add and describes in detail.

Fig. 5 is the viewgraph of cross-section for roughly showing battery module according to another embodiment of the present disclosure.Particularly, Fig. 5 can be considered as the modification example of Fig. 4.

With reference to figure 5, such as schematically by P1, multiple protrusions can be formed at heat transmitting member 220.Protrusion P1 can be passed in heat It passs and is downwardly projected at the lower part in portion 220.Particularly, multiple protrusion P1 can be arranged at single busbar.For example, multiple prominent The bottom surface of heat transmitting member 220 of positive electrode busbar 201 can be arranged on by playing P1, and multiple protrusion P1 can be set Set the bottom surface in the heat transmitting member 220 of negative electrode busbar 202.

In addition, multiple protrusion P1 can be separated from each other at each busbar with preset distance.For example, such as scheming Shown in 5, multiple protrusion P1 can the heat transmitting member 220 of each busbar bottom surface in the lateral direction (in x On axis direction) it is separated from each other with preset distance.Alternatively, multiple protrusion P1 can be passed in the heat of each busbar The bottom surface for passing portion 220 is separated from each other (on the y-axis direction of Fig. 1) with preset distance in the longitudinal direction.

According to this construction of the disclosure, the lower surface area of the heat transmitting member 220 of each busbar increases to improve The cooling efficiency realized by heat transmitting member 220.Particularly, heat pad piece 300 can be fabricated from a flexible material.Correspondingly, in this feelings In shape, even if since protrusion P1 forms heterogeneity at the surface of heat transmitting member 220, it still can root as shown in FIG. 5 Change the shape of the upper surface of heat pad piece 300 according to non-uniform shapes.Therefore, it is increased using the protrusion P1 of heat transmitting member 220 Contact area between busbar and heat pad piece 300, to be transmitted to the heat of thermal component 10 from busbar by heat pad piece 300 Amount can increase.In addition, because since protrusion P1 increases the frictional force between heat transmitting member 220 and heat pad piece 300 and connects Contacting surface is accumulated, so the connection between busbar and heat pad piece 300 can be modified.

In addition, being formed in the construction of protrusion wherein at the lower part of heat transmitting member 220, the protrusion with heat transmitting member 220 It accordingly positions and determines that the insertion groove (not shown) of size can be formed at the top of thermal component 10.According to this structure It makes, when the protrusion P1 of busbar is inserted into the insertion groove of thermal component 10, between busbar and thermal component 10 Connection can enhance.In addition, in this case, the upper surface area of thermal component 10 increase in the unit interval from busbar The heat that bigger is transmitted to thermal component 10, thus further increases cooling efficiency.

It is further preferred that in positive electrode busbar 201, interconnecting piece 210 can have the positive electrode with can type secondary battery The consistent concave portions of shape.This will be described more fully below with reference to Fig. 6.

Fig. 6 is roughly to show that positive electrode busbar 201 according to an embodiment of the present disclosure is detached from uni-body components 100 Viewgraph of cross-section.

With reference to figure 6, the positive electrode terminal of setting at the right end for each secondary cell being arranged in uni-body components 100 It such as can be schematically configured to projecting upwards to the right by B1.It is used as in the construction that protrusion can be described in figure 3 Top cap c1.In such configuration, it is arranged at the right side of uni-body components 100 and connects with the positive electrode of multiple secondary cell Tactile positive electrode busbar 201 can have at its left surface at its inner surface such as by G1 schematically in right direction Recessed concave portions.In addition, when battery module is constructed, the positive electrode terminal B1 of each secondary cell can be inserted into In concave portions.For this purpose, spill can accordingly be selected with the positive electrode terminal for the secondary cell being arranged in uni-body components 100 Position, number and the shape of part G1.For example, as shown in FIG. 6, making when four secondary cells are stacked in the up-down direction Four positive electrode terminals when being configured to be spaced apart with preset distance in above-below direction, four concave portions can also be just Be formed as being spaced apart with preset distance in the up-down direction at electrode converging item 201.

According to this construction of the disclosure, the connection between uni-body components 100 and positive electrode busbar 201 can be changed Into.That is, the positive electrode terminal in each secondary cell being arranged in uni-body components 100 is inserted into positive electrode busbar 201 Concave portions G1 in when, the connection between secondary cell and positive electrode busbar 201 is modified, and it can be prevented perpendicular Straight or transverse shifting.In addition, because the coupled position of secondary cell and positive electrode busbar 201 is guided by concave portions G1, So uni-body components 100 and positive electrode busbar 201 can be assembled more easily.

In addition, according to this construction of the disclosure, between the positive electrode terminal and positive electrode busbar 201 of secondary cell Contact area can increase.For example, in the cross-sectional configuration of Fig. 6, the concave portions of positive electrode busbar 201 can have greatly Three insides (upside, downside and right side) are caused, and the positive electrode terminal of secondary cell can be with this three all inside phases Contact.If the contact area as above between the positive electrode terminal of secondary cell and positive electrode busbar 201 increases, from two The area that the positive electrode of primary cell transmits heat to positive electrode busbar 201 increases, and thus further increases and is realized by busbar Secondary cell cooling performance.In addition, the contact area between the positive electrode and positive electrode busbar 201 of secondary cell increases Added-time, electrical path can be amplified to reduce resistance.

In such configuration, the depth of concave portions G1 is preferably less than the protrusion length of positive electrode terminal B1.For example, In Fig. 6, the length in the lateral direction that the length in the lateral direction of positive electrode terminal B1 can be than concave portions G1 is more It is long.In can type secondary battery, battery can itself can functionally be used as negative electrode, and it is therefore desirable that work as positive electrode Positive electrode busbar 201 is not in contact with battery can when terminal is inserted into concave portions.

It is further preferred that in negative electrode busbar 202, interconnecting piece 210 can have the appearance pair with can type secondary battery The male portion answered.

Fig. 7 is roughly to show that negative electrode busbar 202 according to an embodiment of the present disclosure is detached from uni-body components 100 Viewgraph of cross-section.

With reference to figure 7, the negative electrode terminal being arranged at the left end for each secondary cell being arranged in uni-body components 100 is such as Can schematically have substantially flat shape by B2.Be formed as at its inner surface in addition, negative electrode busbar 202 can have Inwardly i.e. such as by P2 schematically towards secondary cell (in the right direction in drawing) male portion outstanding.

Male portion P2 can be between secondary cell and when negative electrode busbar 202 and uni-body components 100 are joined It is placed between secondary cell when connecing.For example, in the figure 7, male portion can be placed into stack in the up-down direction it is secondary In space between battery.In this case, it is possible to think that the end of the close negative electrode of the battery can of secondary cell is inserted into In space between male portion P2.

According to this construction of the disclosure, the connection between secondary cell and negative electrode busbar 202 can be enhanced, And the assembling position of secondary cell and negative electrode busbar 202 may be easy to be guided.Moreover, in the negative electrode of secondary cell Contact area between terminal and negative electrode busbar 202 can be amplified to increase from secondary cell to negative electrode busbar 202 transmit the amount and speed of heat.Particularly, as shown in FIG. 3, in can type secondary battery, battery can 112 can not only exist It is used as negative electrode terminal in its underpart but also in its side.Therefore, if a part for battery can is inserted in negative electrode In space between the male portion of busbar 202, then heat can not only the lower surface of battery can (cylindrical battery tank it is flat Smooth lower surface) at but also be passed at a part for the side surface of battery can (curved lateral surface of cylindrical battery tank) Negative electrode busbar 202.Therefore, in this case, area of heat transfer can increase.In addition, the negative electricity in secondary cell is extreme When contact area between son and negative electrode busbar 202 increases, electrical path can be extended to reduce resistance.

Meanwhile the electrode terminal of secondary cell can be in direct contact with busbar.In this case, in order to steadily maintain Contact condition between the electrode terminal and busbar of secondary cell, the electrode and busbar of secondary cell can utilize welding It is Deng being in contact with each other fixed.Particularly, as in the construction of Fig. 6 and Fig. 7, if concave portions G1 or male portion P2 is formed at the interconnecting piece 210 of busbar, then secondary cell and busbar are preliminarily fixed before welding, are thus improved Welding process between secondary cell and busbar.In addition, in the portion that concave portions G is formed at positive electrode busbar 201 In point, the length (width) in the lateral direction of positive electrode busbar 201 reduces, and the fixed force to be realized by welding can be with It further increases.

In addition, the heat transmitting member 220 of busbar can in uni-body components 100 at lower side stack pot it is secondary The lower part of battery is in contact.In this case, the heat of the secondary cell stacked at lower side can be directly transmitted to heat Transfer part 220 is without by interconnecting piece 210, being thus further improved the cooling performance of uni-body components 100.

It is further preferred that as shown in FIG. 2, busbar may further include portion of terminal 230.

Portion of terminal 230 can provide the terminal for being electrically connected with external component.Portion of terminal 230 can be disposed in connection It is protruded at the top in portion 210 and from interconnecting piece 210.

Particularly, portion of terminal 230 can be by integrated with the interconnecting piece 210 of secondary cell.For example, portion of terminal 230, connection Portion 210 and heat transmitting member 220 can be formed using single metal plate.

It is further preferred that portion of terminal 230 can be formed by being bent the top of interconnecting piece 210.For example, such as in Fig. 1 and Shown in Fig. 2, portion of terminal 230 can be configured to from the top of interconnecting piece 210 towards the top of uni-body components 100 with about 90 The angle of degree is bent.Particularly, busbar 200 can use the single metal plate structure that upper part and lower part are bent so that It is divided into interconnecting piece 210, heat transmitting member 220 and portion of terminal 230 based on bending part (fold line).

Portion of terminal 230 can be arranged at both positive electrode busbar 201 and negative electrode busbar 202.In addition, positive electricity The portion of terminal 230 of pole busbar 201 and the portion of terminal 230 of negative electrode busbar 202 can be toward each other by the opposite direction Bending.

For example, as shown in FIG. 2, uni-body components 100 can be arranged in the portion of terminal 230 being bent upwards to the left Right side at positive electrode busbar 201 top at formed.In addition, the portion of terminal 230 being bent upwards to the right can be It is arranged at the top of the negative electrode busbar 202 at the left side of uni-body components 100 and is formed.

It is further preferred that two or more portion of terminal 230 can be arranged at single busbar make with preset distance that This is spaced apart.

For example, as shown in FIG. 1, positive electrode busbar 201 and negative electrode busbar 202 can be respectively disposed in At the right side and left side of battery module.Here, two portion of terminal 230 can be arranged at the top of positive electrode busbar 201, And two portion of terminal 230 can also be arranged at the top of negative electrode busbar 202.In addition, portion of terminal 230 can be every It is separated from each other with preset distance at one busbar.For example, two ends being arranged at the top of positive electrode busbar 201 Sub-portion 230 can be separated from each other (on the y-axis direction in drawing) with preset distance in the longitudinal direction.

According to this construction of the disclosure, because multiple portion of terminal 230 is formed at same busbar, busbar It can be connected to external device (ED) in various ways.That is, even if the connection terminal for the device that battery module is applied to is any Side upwardly close to, still can depend on situation selectively use portion of terminal 230 appropriate.Therefore, when battery module by with When assembling, assembling can be improved and simplify structure.

Particularly, if multiple portion of terminal 230 are formed at single busbar, certain portion of terminal 230 can be constructed At standing.This will be described more fully below with reference to Fig. 8.

Fig. 8 is the certain portion of terminal 230 for roughly showing the busbar in battery module according to an embodiment of the present disclosure It is configured to the perspective view erected.

With reference to figure 8, positive electrode busbar 201 and negative electrode busbar 202 can respectively have in the longitudinal direction ( On y-axis direction) with two portion of terminal 230 of preset distance separation.At this point, two portion of terminal 230 of positive electrode busbar 201 Illustrated respectively by M1 and M2, and two portion of terminal 230 of negative electrode busbar 202 are illustrated by N1 and N2 respectively.

In such configuration, positive electrode busbar 201 can be so constructed so that the portion of terminal M1 quilts being located at front side Horizontal and the portion of terminal M2 standings at rear side.That is, the portion of terminal M1 of positive electrode busbar 201 can be configured to from even Socket part 210 is bent towards the top of uni-body components 100 with about 90 degree, and portion of terminal M2 can be configured to substantially flat Row is in the standing (on z-axis line direction) in the upper and lower directions of interconnecting piece 210.

In addition, in this configuration, negative electrode busbar 202 can be so constructed so that the portion of terminal being located at front side N1 is erected and the portion of terminal N2 horizontal at rear side.That is, the portion of terminal N1 of negative electrode busbar 202 can be configured to Substantially it is erected in the upper and lower directions parallel with interconnecting piece 210, and portion of terminal N2 can be configured to from interconnecting piece 210 towards list The top of body component 100 is bent with about 90 degree.

According to this construction of the disclosure, in multiple portion of terminal of busbar, battery module can pass through standing Portion of terminal is connected to external device (ED).As described above, the connection terminal of external device (ED) can be approached more easily and is coupled To the portion of terminal of standing.

Moreover, in this case, positive electrode busbar 201 and negative electrode busbar 202 can be detached more easily.Specifically Ground, when multiple portion of terminal 230 of each busbar is arranged in positive electrode busbar 201 and negative electrode busbar 202 When place is for example spaced apart along the front-rear direction of battery module with preset distance along the longitudinal direction of battery module, the end of standing Sub-portion can be located at position different on the front-rear direction of battery module.

For example, in fig. 8, the portion of terminal of positive electrode busbar 201 and negative electrode busbar 202 is before and after battery module It is spaced apart with preset distance (on y-axis direction) on direction.Here, negative electrode busbar 202 can be constructed such that Portion of terminal N1 at front side is erected, and positive electrode busbar 201 can be constructed such that the terminal at rear side Portion M2 is erected.In addition, positioned at negative electrode busbar 202 rear side at portion of terminal N2 and before positive electrode busbar 201 Portion of terminal M1 at side can be configured to horizontal.

In this case, at the rear side of the portion of terminal N1 at the front side of negative electrode busbar 202 and positive electrode busbar 201 Portion of terminal M2 can be considered as being used respectively as the portion of terminal of negative electrode busbar 202 and positive electrode busbar 201.Therefore, When using battery module configurations battery pack, the negative electrode for battery module being connected to each other or being connected to external device (ED) converges The terminal of the terminal and positive electrode busbar 201 that flow item 202 can be considered separately as being used as portion of terminal N1 and M2.

In positive electrode busbar 201 and negative electrode busbar 202, multiple portion of terminal can be configured to curved It is bent.That is, user can selectively fold or be unfolded the positive electrode busbar 201 in the battery module according to the disclosure and bear Certain portion of terminal in multiple portion of terminal of electrode converging item 202.Therefore, the case where depending on using battery module, terminal Portion can fully erect or horizontal.

If the portion of terminal of busbar is configured to be bent as described above, portion of terminal can more easily be connected It connects, and positive electrode busbar 201 and negative electrode busbar 202 can be detached more easily.

With reference to figure 9, according to multiple battery modules of the disclosure can by transverse horizontal direction (on x-axis direction) Arrange in the lateral direction.At this point, the positive electrode busbar 201 and negative electrode busbar 202 of each battery module can be with It is constructed such that its interconnecting piece 210 faces each other.In addition, in each battery module, as shown in FIG. 8, negative electrode Busbar 202 can be constructed such that the portion of terminal at front side erects, and positive electrode busbar 201 can be constructed such that The portion of terminal at rear side is obtained to erect.Moreover, the portion of terminal erected at the front side of negative electrode may be connected to for negative electrode Connecting component 520, and at the rear side of positive electrode erect portion of terminal may be connected to the interconnecting piece for positive electrode Part 510.

According to this construction, multiple battery module may be easy to be connected in parallel.That is, as shown in FIG. 9, at each The portion of terminal for the negative electrode being connected to each other in battery module can be arranged at the front side of battery module embarks on journey, and connects each other The portion of terminal of the positive electrode connect can be arranged at the rear side of battery module embarks on journey.Therefore, connect the portion of terminal of negative electrode, The portion of terminal of connecting component 520 and connection positive electrode for negative electrode, can be whole for the connecting component 510 of positive electrode It is formed in the form of essentially linear.Furthermore it is possible to be fastened on the connecting component 520 for negative electrode on specific or bigger is horizontal With the distance between the connecting component 510 for positive electrode.In addition, when the connecting component 510 for negative electrode is installed, even Relay part 510 can not interfere in structure with positive electrode terminal, and when the connecting component 520 for being used for positive electrode is installed When, connecting component 520 can not interfere in structure with negative electrode terminal.

Meanwhile even if having been based on multiple battery module is connected in parallel the embodiment for explaining Fig. 9, but multiple electricity Pond module can also be all arranged in series.

Module housing 400 is may further include according to the battery module of the disclosure.Particularly, as shown in FIG. 2, mould Block shell 400 may include first shell 401 and second shell 402.

Here, first shell 401 can be configured to the empty space formed wherein so that uni-body components 100 A part be accommodated in the space of the sky.In addition, second shell 402 can be configured to the sky formed wherein Space so that the different piece of uni-body components 100 is accommodated in the space of the sky.In addition, first shell 401 and second shell 402 can have the individual space for accommodating can type secondary battery respectively.For example, such as schematically by the R1 in Fig. 2, first Shell 401 can be constructed such that space wherein is divided into the sky for accommodating each secondary cell by partition wall Between.In addition, such as schematically by the R2 in Fig. 2, second shell 402 can also be constructed such that space wherein by partition wall It is divided into the space for accommodating each secondary cell.

According to this construction of the disclosure, can disposably be fixed by module housing 400 entire uni-body components 100, Each secondary cell and busbar.In addition, module housing 400 can be made of insulating materials such as polymer, and herein In situation, uni-body components 100 and busbar may be easy to be insulated.

In addition, when can type secondary battery is column secondary battery, such as schematically it is used to accommodate secondary electricity by R1 and R2 Space in the first shell 401 and second shell 402 in pond can have cylinder corresponding with the shape of can type secondary battery Shape.

Meanwhile space R1, R2 in the first shell 401 and second shell 402 for accommodating secondary cell can be by structures It causes on the longitudinal direction of secondary cell to run through module housing 400 (on the x-axis direction in drawing).For example, for holding Receive secondary cell cavity R1, R2 be formed in the lateral direction run through module housing 400 so that be located at module housing 400 The electrode of the secondary cell of inside is exposed outward from module housing 400.Therefore, in this case, it is located at the confluence of outside Item can be in direct contact with the electrode for the secondary cell for being exposed to outside.

First shell 401 and second shell 402 can be configured to be coupled to the side of uni-body components 100 and another respectively Side.For example, in fig. 2, receiving uni-body components 100 are sentenced on the right side that first shell 401 can be disposed in uni-body components 100 Right part.In addition, the left part for accommodating uni-body components 100 is sentenced in the left side that second shell 402 can be located at uni-body components 100.

Particularly, first shell 401 and second shell 402 can be respectively configured to the side of covering uni-body components 100 And the other side, and also cover whole side surfaces of can type secondary battery.For example, if can type secondary battery is cylindrical secondary Battery, then first shell 401 and second shell 402 can be configured to fully cover the side surface (bending of cylindrical battery Surface) so that the side surface of secondary cell does not expose outward from battery module.According to this construction of the disclosure, module housing 400 prevent the side surface of secondary cell from exposing, and thus improve the insulation of secondary cell and for external physical or chemistry member Part protects secondary cell.

In addition, first shell 401 and second shell 402 can be coupled to and fixed to each other.That is, first shell 401 left end and the right end of second shell 402 can be coupled to each other.By this coupling configuration, list can be covered on the whole Upper surface, lower surface, front surface and the rear surface of body component 100.In other words, as above in first shell 401 and second shell 402 When coupled, whole side surfaces (curved surface of cylinder) of secondary cell that can be in coverage diagram 3.Here, such as the institute in figure To show, first shell 401 and second shell 402 can have the attachment tabs and connection groove for being formed to correspond to each other, and It can be coupled by attachment tabs are assembled in connection groove and fixed to each other.

In battery module includes as described above the construction of module housing 400, busbar can be attached to module housing 400 outside.

For example, seeing Fig. 2, in order to construct battery module, first, first shell 401 and second shell 402 can be based on monomer Component 100 is coupled to right side and left side.After this, positive electrode busbar 201 and negative electrode busbar 202 can respectively by It is connected to the outside of first shell 401 and second shell 402.

In this construction of the disclosure, busbar and uni-body components 100 can be coupled in a stable manner.Especially Ground, because busbar can be fixed to the outside of module housing 400, the contact shape between busbar and secondary cell State and the contact condition between busbar and thermal component 10 can be stably maintained.

In addition, in this case, it is possible to ensuring the insulation between positive electrode busbar 201 and negative electrode busbar 202. Particularly because positive electrode busbar 201 can only contact the positive electrode terminal of can type secondary battery without contacting battery can, institute Positive electrode busbar 201 can be prevented to be connected to the negative electrode of secondary cell and therefore cause short circuit.In addition, in this feelings In shape, module housing 400 can be made of electrically insulating material such as plastics, to prevent busbar to be undesirably electrically connected to Another part of another busbar or secondary cell.

In addition, busbar can be curved to surround top, side and the lower part of module housing 400.

For example, in fig. 2, positive electrode busbar 201 can be arranged on the outside of first shell 401, i.e. first shell At the right side of body 401 so that the top and bottom of positive electrode busbar 201 are by towards the inside of first shell 401, i.e., to the left Side is bent upwards.In addition, due to this curved configuration, positive electrode busbar 201 can surround the upper of first shell 401 from outside Portion, side and lower part at least part of each.At this point, the center portion of the busbar erected with flat form may be used as Interconnecting piece 210 may be used as portion of terminal 230 in the part being bent upwards to the left at the upper end of busbar, and converge The left end of item is in the part being bent upwards to the left and may be used as heat transmitting member 220.

In addition, in fig. 2, negative electrode busbar 202 can be arranged on the outside of second shell 402, i.e. second shell At the left side of body 402 so that top and bottom are being bent upwards to the right by towards the inside of second shell 402.In addition, Due to this curved configuration, the top, side and lower part that negative electrode busbar 202 can surround second shell 402 from outside are every One at least part.In addition, in negative electrode busbar 202, central flat part may be used as interconnecting piece 210, upper end The bending part at place may be used as portion of terminal 230, and the bending part at lower end may be used as heat transmitting member 220.

It is further preferred that module housing 400 can have connection groove, connection groove to be formed so that busbar at least A part can be inserted into connection groove.

Figure 10 is the enlarged view for the part A2 for showing Fig. 2, and Figure 11 is the enlarged view for the part A3 for showing Fig. 2.

First, with reference to figure 10, the connection groove with concave shape can be such as by G2 schematically the in an upward direction It is formed at the lower surface of one shell 401.In addition, when first shell 401 and positive electrode busbar 201 are coupled, positive electrode converges The heat transmitting member 220 of stream item 201 can be inserted into connection groove G2 and be placed in connection groove G2.

In such configuration, first shell 401 can have stop portions, and stop portions are in positive electrode busbar 201 The outside of the end of heat transmitting member 220 is formed.That is, in Fig. 10, connection groove G2 can be in the lower surface of first shell 401 Place is formed, and such as by W2, schematically downward projection of stop portions can be arranged on the inside (drawing of connection groove G2 On left side at).In this case, the outside of the end for the heat transmitting member 220 being inserted into connection groove G2 can be blocked portion Divide W2 blockings, to be prevented more reliably the heat transmitting member 220 of positive electrode busbar 201 towards the heat of negative electrode busbar 202 Heat transmitting member 220 of the heat transmitting member 220 of the movement of transfer part 220 or negative electrode busbar 202 towards positive electrode busbar 201 It is mobile.Therefore, in this case, it is possible to more steadily ensure the exhausted of positive electrode busbar 201 and negative electrode busbar 202 Edge.

In addition, with reference to figure 11, second shell 402 can have connection groove, following table of the connection groove in second shell 402 It is formed in face and schematically such as there is concave shape in an upward direction by G3.When second shell 402 and negative electrode busbar 202 When coupled, the heat transmitting member 220 of negative electrode busbar 202 can be inserted into connection groove G3 and be placed in connection groove In G3.

In such configuration, second shell 402 can have in the end of the heat transmitting member 220 of negative electrode busbar 202 Outside formed stop portions.That is, in fig. 11, connection groove G3 can be formed at the lower surface of second shell 402, And stop portions such as can be schematically arranged on the inside of connection groove G3 by W3 (in the right side in drawing).In this feelings In shape, the outside of the end for the heat transmitting member 220 being inserted into connection groove G3 can be blocked part W3 blockings, thus more steady Surely ensure the insulation between negative electrode busbar 202 and positive electrode busbar 201.

Meanwhile even if the heat transmitting member 220 for describing busbar in the embodiment of Figure 10 and Figure 11 is inserted into mould In block shell 400, but it is still possible that the interconnecting piece 210 of busbar and/or portion of terminal 230, which are inserted into module housing 400,.

For example, such as schematically by the G4 in Fig. 8, connection groove can be with corresponding with the portion of terminal of positive electrode busbar 201 Position, number and shape formed at the rear portion of the upper surface of first shell 401.In addition, the terminal of positive electrode busbar 201 Portion M2 can be inserted in connection groove G4.

In addition, such as schematically by the G5 in Fig. 8, connection groove can be with corresponding with the portion of terminal of negative electrode busbar 202 Position, number and shape formed at the front of the upper surface of second shell 402.In addition, the terminal of negative electrode busbar 202 Portion N1 can be inserted in connection groove G5.

In addition, connection groove can also respectively at the front of the upper surface of first shell 401 and second shell 402 it is upper It is formed at the rear portion on surface so that the portion of terminal M1 of positive electrode busbar 201 and the portion of terminal N2 of negative electrode busbar 202 are inserted Enter in connection groove.

According to this construction of the disclosure, in busbar, particularly the portion of terminal 230 of busbar and module housing 400 it Between connection can be enhanced.In addition, when portion of terminal 230 is inserted into connection groove, the outer of portion of terminal 230 can be reduced Portion exposes, and thus reduces other components and is contacted with the accident of portion of terminal 230.Therefore, the electrical isolation of the portion of terminal 230 of busbar can To be improved.In addition, in this case, the portion of terminal 230 for being not used for electrical connection of the battery module to external device (ED) also can Enough it is inserted into connection groove.

Particularly, connection groove G4, G5 of module housing 400 can be so constructed so that stop portions are in portion of terminal The outside of 230 end is formed.

For example, in fig. 8, such as schematically by W4 and W5, stop portions can be in the outer of the connection groove of module housing 400 Formed at side is displaced outwardly or prevents another conductor from joining close to insertion with the portion of terminal 230 for preventing from being inserted into connection groove Connect the portion of terminal 230 in groove.Therefore, in this case, it is possible to more reliably be blocked in the portion of terminal 230 of module busbar Between contact.

In addition, module housing 400 and busbar can have the construction for being coupled to each other.

For example, second shell 402 can have protrusion, the protrusion such as by the P3 in Fig. 2 and Figure 11 schematically It is formed to outwardly protrude (at the left surface in drawing) in outer surface.In addition, negative electrode busbar 202 can have connection Hole, the connection holes are such as by the H3 in Fig. 2 schematically with location and shape shape corresponding with the protrusion P3 of second shell 402 At.In this case, when second shell 402 and negative electrode busbar 202 are coupled, protrusion P3 can be inserted into connection In the H3 of hole.

In addition, the connection holes of the protrusion and negative electrode busbar 202 similar to second shell 402, first shell 401 It can also be coupled to each other by with protrusion and connection holes with positive electrode busbar 201.

According to this construction of the disclosure, module housing 400 and busbar can more reliably be coupled and more easily In assembled.In addition, in this case, it is possible to being more smoothly performed the electrode terminal that busbar is welded to secondary cell Process.

Figure 12 is the perspective view for roughly showing battery module according to another embodiment of the present disclosure, and Figure 13 is to show The starting section enlarged view of the part A4 of Figure 12, and Figure 14 is roughly to show according to another embodiment of the present disclosure more A connected figure of battery module.In this embodiment, by main description different from the feature of previous embodiment, and will not The feature that can be applied in a manner of similar or identical in previous embodiment is explained in detail.

Referring to figs. 12 to Figure 14, portion of terminal 230 can be configured to prominent towards the top of module housing 400 and then It is least partially bent to extend in the horizontal direction.Particularly, with reference to figure 13, portion of terminal 230 can be configured to from attached The interconnecting piece 210 for being connected to the outside of module housing 400 upwardly extends, and then in the part illustrated by A5 by with substantially straight Angular distortion to extend in the horizontal direction.In this case, such as by the J in Figure 13 schematically, portion of terminal 230 can be upward In the state of protruding and being spaced apart from the upper surface of module housing 400 with preset distance in horizontal direction parallel to the ground The part flatly formed.

According to this construction of the disclosure, put down with ground using in the state of being protruded towards the top of portion of terminal 230 The part flatly formed in capable horizontal direction, i.e., horizontal component J outstanding, connecting component and portion of terminal 230 can be by more Add easily and steadily connects.In other words, with reference to figure 12, when for positive electrode connecting component 510 and be used for negative electrode Connecting component 520 be configured to contact and when connecting end sub-portion 230, the horizontal component J outstanding of portion of terminal 230 can divide It is not contacted with connecting component 510,520 surfaces.Therefore, the electrical contact between portion of terminal 230 and connecting component 510,520 can With more stable and contact resistance can further decrease.Moreover, in this case, when portion of terminal 230 and connecting component 510,520 by weld etc. it is coupled when, connection process can be more smoothly performed.

In addition, being arranged in the construction at portion of terminal 230 in horizontal component J wherein outstanding, interconnecting piece 210 and terminal Both portions 230 can be made of the sheet metal of single one.That is, the portion of terminal 230 including horizontal component J outstanding can be by shape As the single metal plate with 210 one of interconnecting piece.In this case, the upper end of interconnecting piece 210 can be bent to form end Sub-portion 230 particularly includes the portion of terminal 230 of horizontal component J outstanding.According to this construction of the disclosure, there is portion of terminal 230 busbar 200 can be manufactured more easily.

In addition, horizontal component J outstanding can be arranged at the portion of terminal of the module terminals as battery module.Example Such as, in fig. 12, two portion of terminal N1, N2 can be configured to the portion of terminal 230 of negative electrode busbar 202, and outstanding Horizontal component J can be formed only at the portion of terminal N1 at front side.In addition, in fig. 12, two portion of terminal M1, M2 can be with It is configured to the portion of terminal 230 of positive electrode busbar 201, and horizontal component J outstanding can be only at the end at rear side It is formed at sub-portion M2.

It is further preferred that portion of terminal 230 can be configured to define horizontal component J outstanding and then again to downward It stretches.More specifically, with reference to figure 13, portion of terminal 230 can be configured to project upwards from the top of module housing 400, in portion Divide at A5 and is bent in the horizontal direction to form horizontal component J outstanding, and then at the A6 of part by with basic right angle It is bent downwardly.In this case, it is possible to think that at least two bending part A5, A6 are formed at portion of terminal 230.

Meanwhile in constructed above, the lower end for being bent downwardly part of portion of terminal 230 can be considered as portion of terminal 230 The upper part of end and busbar 200.Here, the end of portion of terminal 230 can be configured to the table of contact module housing 400 Face.That is, such as schematically by the A7 in Figure 13, the end of portion of terminal 230 can be configured to be placed on the upper of module housing 400 On surface.

According to this construction of the disclosure, the end of portion of terminal 230 can in an upward direction be propped up by module housing 400 Support.Therefore, when the horizontal component J-shaped outstanding of connecting component 510,520 and portion of terminal 230 is at when contacting or after this, The end of portion of terminal 230 does not move down so that horizontal component J outstanding can be stably retained under horizontality.Cause This, in this case, portion of terminal 230 and connecting component 510,520 can be connected more successfully, and are directed to and are vibrated, is outer Portion's impact etc., the connection status of portion of terminal 230 and connecting component 510,520 can be maintained more steadily.

In addition, in such configuration, module housing 400, which can have, places groove, which is formed so that The end of portion of terminal 230 is inserted into and is placed in the placement groove.More specifically, with reference to figure 12 and Figure 13, such as by E1 Schematically, the placement groove for being formed as concave in a downward direction can particularly exist at the upper surface of module housing 400 It is formed at upper connection groove G4, G5 of module housing 400.In addition, the end of portion of terminal 230 can be inserted downwardly module housing In 400 placement groove E1.Particularly, the groove E1 that places of module housing 400 can be with the front-rear direction in battery module The shape of slit of upper extension.

According to this construction of the disclosure, because the end of portion of terminal 230 is inserted into the placement groove E1 of module housing 400 In, so the shape of portion of terminal 230 can be stably maintained.Particularly, the end of portion of terminal 230 can be not easy in left and right It is mobile (on the X-axis line direction in drawing) on direction.Therefore, the horizontal component J outstanding of portion of terminal 230 can be easy to tie up Hold the longitudinal direction to be parallel to the upper surface of module housing 400, being parallel to ground or be parallel to connecting component 510,520. Therefore, contact and connection status of the portion of terminal 230 with connecting component can be maintained more reliably.

In addition, can include further insulating panel in the outside of busbar according to the battery module of the disclosure.Insulation Panel can be made of electrically insulating material such as polymer, silicones or rubber.In addition, insulating panel can be in vertically side The outside of the interconnecting piece 210 of busbar is arranged in the state of to standing.

According to this construction of the disclosure, because insulating panel prevents or reduces the exposure of interconnecting piece 210, it is possible to Steadily ensure to be electrically insulated with busbar.

In addition, being arranged in the embodiment at battery module in wherein module housing 400, insulating panel can be coupled To the outside of module housing 400.For example, groove can be formed such that the side of insulating panel close to the outer edge of module housing 400 Edge can be inserted in groove.Alternatively, protrusion can be formed in the outer edge of module housing 400 so that protrusion can be by It is inserted into the edge of insulating panel.

Battery pack according to the disclosure may include at least one battery module of the disclosure.For example, such as institute in fig.9 Show, the battery pack according to the disclosure may include multiple battery modules, and in this case, it is possible to further comprise for connecting Connect the connecting component of battery module.In addition, other than battery module, can further include according to the battery pack of the disclosure The various devices such as cell tube of battery housing for accommodating battery module and the charge/discharge for controlling battery module Reason system (BMS), current sensor and fuse.

It can be applied to vehicle such as electric vehicle and hybrid electric vehicle according to the battery module of the disclosure.That is, root Vehicle according to the disclosure may include the battery module of the disclosure.Particularly, in the situation of electric vehicle, battery module can be with It is disposed at the lower part of vehicle.At this time, it may be necessary to which battery module does not have big height.Moreover, for the battery module of vehicle, Cooling performance is also very important.Therefore, if being applied to vehicle according to the battery module of the disclosure, battery module can With the cooling performance for ensuring low height and stablizing.

Meanwhile even if having used the term in signal up, down, left, right, before and after direction in the description, but for ability For field technique personnel it is evident that for the sake of for convenience of explanation, these terms only indicate opposite position, and can be based on The position of observer is wherein placed the shape of object and is changed.

The disclosure is described in detail.It should be appreciated, however, that when illustrating preferred embodiment of the present disclosure, specifically Bright and specific example is only provided by signal, because from this detailed description, to those skilled in the art, at this Various changes and modifications in the open scope will be apparent.

Claims

1. a kind of battery module, the battery module includes the thermal component being arranged at its underpart, and the battery module includes：

Uni-body components, the uni-body components have the multiple can type secondary batteries stacked in the form of horizontal in the horizontal direction；With

There is interconnecting piece and heat transmitting member, the interconnecting piece to be configured to contact the uni-body components for busbar, the busbar Two or more can type secondary batteries electrode, the two or more can type secondary batteries are electrically connected, it is described Heat transmitting member is located at the lower section of the interconnecting piece to contact the thermal component, to which the heat of the secondary cell is transmitted to institute Thermal component is stated, the busbar is made of an electrically conducting material at least partly.

2. battery module according to claim 1,

Wherein, the busbar has twisted plate form, wherein the interconnecting piece is configured to one along the uni-body components Side erects in the up-down direction, and the heat transmitting member be configured in the horizontal direction horizontal to be placed into the monomer group Between the lower part of part and the top of the thermal component.

3. battery module according to claim 1,

Wherein, the busbar includes positive electrode busbar and negative electrode busbar, and there is the positive electrode busbar contact to set The interconnecting piece of the positive electrode of the can type secondary battery in the uni-body components is set, the negative electrode busbar has contact The interconnecting piece of the negative electrode for the can type secondary battery being arranged in the uni-body components.

4. battery module according to claim 3,

Wherein, the positive electrode busbar and the negative electrode busbar are located at the two opposite sides of the uni-body components so that The heat transmitting member of the heat transmitting member of the positive electrode busbar and the negative electrode busbar is by the opposite direction Bending.

5. battery module according to claim 3,

Wherein, the positive electrode busbar and the negative electrode busbar are in contact with single thermal component, and

Wherein, the battery module further comprises heat pad piece, and the heat pad piece is placed into the positive electrode busbar and described Between at least one of negative electrode busbar and the thermal component, the heat of the busbar is transmitted to the radiating part Part, the heat pad piece are formed of an electrically insulating material.

6. battery module according to claim 1,

Wherein, the busbar further comprises that portion of terminal, the portion of terminal provide the terminal for electrically connecting to external component.

7. battery module according to claim 6,

Wherein, the portion of terminal is bent on the direction on the top towards the uni-body components at the top of the interconnecting piece.

8. battery module according to claim 6,

Wherein, two or more portion of terminal are arranged at single busbar, to be separated from each other with preset distance.

9. battery module according to claim 1, further comprises：

Module housing, the module housing include first shell and second shell, and the first shell has in the first shell To accommodate a part for the uni-body components, the second shell has in the second shell in the empty space formed in body The empty space of formation to accommodate another part of the uni-body components,

Wherein, the first shell and the second shell are configured to the respectively side and the other side in the uni-body components Place's connection.

10. battery module according to claim 9,

Wherein, the busbar is attached to the outside of the module housing.

11. battery module according to claim 9,

Wherein, the module housing has the connection groove formed wherein so that the busbar is at least partially inserted In the connection groove.

12. a kind of battery pack, including at least one battery module according to any one of claim 1 to 11.

13. a kind of vehicle, including at least one battery module according to any one of claim 1 to 11.