阅读说明：本技术 具有多件式母线帽组件的电池组件 (Battery component with multi-piece type bus cap assembly ) 是由 C-C·陈 W·W·蔡 S·D·洛伦兹 于 2019-04-25 设计创作，主要内容包括：一种电池组件,包括电极接线片和多件式母线帽组件。帽组件的第一帽构件具有形成U形横截面的侧壁和位于远端的径向凸起。第二帽构件具有侧壁,其中在第二构件的远端处具有M形横截面,并且在M形远端之间延伸有U形横截面。在制造电池组件的方法中,接线片通道接收电极接线片。第二帽构件限定径向凹槽,当第一帽构件朝向第二帽构件的底板移动时,该径向凹槽接收径向凸起,以将第一帽构件固定到第二帽构件,并且结合帽构件之间的接触将电极接线片固定在接线片通道内。(A kind of battery component, including electrode tabs and multi-piece type bus cap assembly.First cap component of cap assembly has the side wall for forming U-shaped cross-section and the radial protrusion positioned at distal end.Second cap component has side wall, wherein the far-end in second component has M shape cross section, and is extended with U-shaped cross-section between M shape distal end.In the method for manufacture battery component, lug plate channel reception electrode tabs.Second cap component limits radial groove, when the bottom plate of the first cap component towards the second cap component is mobile, the radial groove receives radial protrusion, the first cap component is fixed to the second cap component, and combine the contact between cap component that electrode tabs are fixed in lug plate channel.)

1. a kind of battery component, including

First and second electrode tabs；And

Multi-piece type bus cap assembly, comprising:

First cap component has and forms the first bottom plate and elongate side wall of U-shaped cross-section, and first cap component is described the The far-end of one cap component limits radial protrusion；And

Second cap component has the second bottom plate and elongate side wall, and it is transversal to form M shape in the far-end of second cap component Face, and it is formed in the U-shaped cross-section extended between the distal end of second cap component, M shape cross section defines and institute The second bottom plate adjacent pair lug plate channel is stated, is configured to receive first and second electrode tabs, wherein institute The second cap component is stated to limit at first and second positions of the far-end relative to second bottom plate of second cap component Radial groove；

Wherein the radial protrusion of first cap component is configured as entering the second cap structure at the first position First cap component is attached to second cap component by the radial groove of part, and in the second place by institute The first and second electrode tabs are stated to be fixed in lug plate channel.

2. battery component according to claim 1, wherein when first cap component is in the second position, institute It states the first and second electrode tabs and is laser-welded to the multi-piece type along the corresponding length of first and second cap component Bus cap assembly.

3. battery component according to claim 1, wherein first cap component is made of bimetallic material.

4. battery component according to claim 3, wherein the bimetallic material is copper and aluminium.

5. battery component according to claim 1, wherein the multi-piece type bus cap assembly is partly by nonmetallic materials It constitutes.

6. battery component according to claim 5, wherein the nonmetallic materials are molded plastics.

7. battery component according to claim 1, wherein the radial protrusion and the radial groove be respectively convex and Concave character.

8. battery component according to claim 1, wherein the lug plate channel is with about 0.35-0.40 millimeters Gap width, and first and second electrode tabs have about 0.15-0.25 millimeters of thickness.

9. a kind of method that manufacture has the battery component of the first and second electrodes, which comprises

First cap component is provided, there is the first bottom plate and elongate side wall for being formed together U-shaped cross-section, first cap component There is radial protrusion in the far-end of first cap component；

The second cap component is provided, second cap component, which has, forms M shape cross section in the far-end of the second component together The second bottom plate and elongate side wall, and there is the U-shaped cross-section that extends between the distal end, M shape cross section limits With the second bottom plate adjacent pair lug plate channel, it is configured to receive first and second electrode tabs, Wherein second cap component limits radial groove in each far-end of the second component；And

In first position by the first cap component temporary attachment to second cap component, to form multi-piece type bus cap group Part, the radial groove including the radial protrusion of first cap component to be inserted into second cap component in the first position In.

10. according to the method described in claim 9, further comprising:

When first cap component is when the first position is attached to second cap component, by first and second electrode Lug plate is inserted into the lug plate channel；

By first cap component be moved to than the first position closer to second cap component bottom plate the second position, So that the contact between first cap component and second cap component pushes first cap component and the first and second electricity Pole contact；And

When first cap component is in the second position, first and second electrode laser is welded to the more than one piece In first and second cap component of formula bus cap assembly.

Summary of the invention

Disclosed herein is a kind of battery components, for the multi-piece type busbar cap assembly in battery component and use cap The method of component composition battery component.Each stacks of cells of battery component includes at least one symmetrically connecing by the above-mentioned type The battery unit that the configuration of line piece is constituted.That is, the diameter of unit connection piece from the battery unit of a given battery unit is opposite Outer edge protrusion.Serial or parallel connection electrical connection can be formed in stacks of cells, such as use laser welding process.

Multi-piece type bus cap assembly as battery component a part constructs in this way, i.e., final to provide closely For lug plate to the assembly of bus cap, this is conducive to the laser welding during battery component manufacture.This method is pressed from both sides using outside Tight fixture comes the above-mentioned gap between closed cell lug plate and bus cap, and current method is instead will be from clamping structure feature It is integrated into bus cap itself, to form multi-piece type bus cap assembly as described herein.

The exemplary embodiment of battery component includes electrode tabs, that is, cathode or anode lug and multi-piece type are female Line cap assembly.Cap assembly includes the first and second cap components.First cap component has the elongate side wall for forming U-shaped cross-section, together When side wall may such as tilt in certain embodiments about 1-5 degree slightly offset from true vertical direction.First cap component may be used also To include the radial protrusion positioned at the first cap component distal end.Radial protrusion is used as interim positioning as described herein and keeps feature.

Second cap component further includes elongate side wall, defines M shape cross section in its distal end.The side wall of second cap component With across the U-shaped cross-section between M shape distal end, while this M shape distal end may be in the interconnection plate (ICB) of battery component Cladding molding.Second cap component defines a bottom plate, and the side of the bottom plate is a pair of of lug plate channel, that is, " protrusion " of M shape Form the closed end in lug plate channel.Second cap component also limits two pairs of radial grooves in each of which distal end.Radial groove is matched It is set to and engages the radial protrusion of the first cap component in two different positions, as described further below, while each engagement The bottom plate of position and the second cap component is at a distance from different.

Electrode tabs receive in a corresponding lug plate channel for the second cap component.The radial convex of first cap component It rises and enters the radial groove of the second cap component in first position, the first cap component is temporarily fixed to the second cap component.This Occur before welding unit lug plate, wherein first height or distance of the first position above the bottom plate of the second cap component Place.This feature ensures the first and second cap components as completely to being temporarily attached to each other, such as when delivering from suppliers Or when being transported in manufacturing facility.

Radial protrusion is also by first or second electrode tabs temporary attachment in a corresponding lug plate channel.When When one cap component is moved to the second position relative to the second cap component, that is, above the floor of the second cap component second height or Apart from when, this contact between the first and second cap components combines generation.Due to the elongate side wall of first cap component The property being slightly tilted, movement of first cap component to the second position of the bottom plate closer to the second cap component, lightly contacts Electrode tabs in lug plate channel are set.

After the radial protrusion of the first cap component is in the second position, the first and second electrode tabs can be along One and second the corresponding length of cap component be laser-welded to multi-piece type bus cap assembly.

Multi-piece type bus cap assembly can be made of bimetallic material, such as copper and aluminium.Alternatively, cap assembly can portion Divide and constructed by nonmetallic materials, such as molded plastics.

Radial protrusion and radial groove can be embodied as concave and convex surface, so that radial protrusion and radial groove shape together At positioning mechanism.

Above-mentioned abstract is not intended to indicate each possible embodiment disclosed herein or each aspect.On the contrary, front Abstract is intended to illustrate some novelty aspect and feature disclosed herein.By being wanted in conjunction with the following drawings with appended right Ask the detailed description to representative embodiment for carrying out the present invention and mode, features described above of the invention and advantage and its Its feature and advantage will become obvious.

Detailed description of the invention

Fig. 1 is the schematic, exploded perspective view of battery component comprising multi-piece type bus cap assembly as described herein.

Fig. 2 can be used as the schematic of the multi-piece type bus cap assembly of a part of exemplary battery component shown in FIG. 1 Perspective view.

Fig. 2A and 2B is respectively along the schematic cross-section of the bus cap assembly of Fig. 2 of cutting line 2A-2A and 2B-2B interception Side view.

Fig. 3 is the perspective schematic view of the bus cap assembly of Fig. 2 in pre-installed position.

Fig. 3 A and 3B are respectively along the schematic cross-section of the bus cap assembly of Fig. 3 of cutting line 3A-3A and 3B-3B interception Side view.

Fig. 4 is the perspective schematic view of a pair of of the unit connection piece and bus cap assembly of Fig. 3 in pre-installed position.

Fig. 4 A and 4B are respectively along a pair of of the unit connection piece and bus cap group of Fig. 4 of cutting line 4A-4A and 4B-4B interception The cross-sectional schematic side view of part.

Fig. 5 is the perspective schematic view of a pair of of the unit connection piece and bus cap assembly of Fig. 3 in installation site.

Fig. 5 A and 5B are this pair of of unit connection pieces and bus cap along Fig. 5 of cutting line 5A-5A and 5B-5B interception respectively The cross-sectional schematic side view of component.

Fig. 6 and 7 be in installation site a pair of of unit connection piece and optional composite bus cap assembly it is schematic View, while in order to illustrate for the sake of simplicity, the first cap component is omitted.

The disclosure is easy to modifications and substitutions form, and wherein representative embodiment is shown simultaneously below by the example in attached drawing Detailed description.The creative aspect of the disclosure is not limited to particular forms disclosed.It falls on the contrary, the disclosure is intended to cover by institute Modification, equivalent, combination and replacement in the attached the open scope for illustrating to require to limit.

Specific embodiment

With reference to attached drawing, wherein identical appended drawing reference is for identifying similar or identical component, Fig. 1 in each view The exploded view for schematically showing exemplary battery component 10, can be used alone or as battery pack (not shown) more Big a part uses.Battery component 10 uses multi-piece type bus cap assembly 30, is respectively provided with the first cap component 40 and second Cap component 50, as elaborated below.Battery component 10 is made of the stacks of cells 12 of multiple electrical interconnections.Battery component 10 Individual battery unit group 12 can be positioned near protection side panel 13, such as plastics or other light-weight and structural rigidity Plate, they are formed together the external barrier of the protectiveness on 12 side of stacks of cells and structural support.As shown, can wrap Spacer 19 is included, the individual battery unit in stacks of cells 12 is isolated.Although showing the battery of four same configurations in Fig. 1 Unit group 12, but the actual quantity of the stacks of cells 12 used in given application can change, therefore shown in Fig. 1 Battery component 10 is non-limiting, and is the exemplary of this introduction.

Each stacks of cells 12 includes multiple battery units 16, i.e. two or more battery units 16.Given battery The battery unit 16 of unit group 12 can be separated, may be implemented as above-mentioned by spacer 19 and adjacent battery unit 16 The polymer-coated foil pouch-type battery cell of type.In this way, each battery unit 16 includes internal positive electrode foil and negative electrode foil (not shown), they terminate at the specific unit connection piece 17 of charge.The individual of the battery unit 16 of given stacks of cells 12 Unit connection piece 17 forms a line as shown in the figure or a line.

As described below, individual cell lug plate 17 welds together, and is electrically connected to positioned at battery component 10 opposite two The interconnection plate (ICB) 22 or 122 of side.Although (not showing in order to illustrate for the sake of simplicity, master battery controller is omitted from each figure Out), but master battery controller can be used in combination with battery component 10.This controller may be coupled to ICBs22 and 122, And it is embodied as Multipurpose electric sensing plate, for example, via more pin connectors and/or wireless connection, for measuring each battery The individual battery voltage and/or electric current of each battery unit 16 of unit group 12, temperature and other possible control parameters.

As being described in detail referring to Fig. 2-7, battery component 10 includes the more than one piece as a part of ICB22 and 122 Formula bus cap assembly 30, multi-piece type bus cap assembly 30 are respectively provided with the first and second cap components 40 and 50.The knot of cap assembly 30 Structure and geometry are configured to accommodate the component of battery component 10, and are conducive to the laser welding of unit connection piece 17. That is not passing through the first and second shapes of cap component 40 and 50 using single entry bus above-mentioned and clamping fixture At close metal stack, to prepare the stacking progress laser welding process to cap assembly 30 and unit connection piece 17.In addition to having Except laser welding process, the resultant force assembly between cap assembly 30 and unit connection piece 17 also contributes to reducing fusion weld The diffusion and mistake scattering of splashing, otherwise molten drop may be deposited on the sensitive electrical component of battery component 10.

Fig. 2-5B describes the formation of the battery component 10 relative to Fig. 1 in each stage of construction and assembling jointly Multi-piece type bus cap assembly 30.Fig. 2 shows the first and second cap components 40 and 50 before being interconnected, wherein Fig. 2A and 2B It is the cross-sectional view by the taken along line of the 2A-2A and 2B-2B of Fig. 2 respectively.First cap component 40, which has, forms U-shaped cross-section Parallel elongate side wall 42 and 44.U-shaped cross-section includes the middle section (figure formed by elongate side wall 42,44 and bottom plate 43 2A), and by elongate side wall 142,144 and another bottom plate 143 concordant with bottom plate 43 two ends (Fig. 2 B) formed.Relatively It can be slightly tilted in the wall 42 and 44 of real vertical direction, i.e., 90 °, middle section, that is, pass through about 1-5 ° of inclination of angle It spends (θ), so that wall 42 and 44 is inclined slightly outwards.As shown in Fig. 2, optional vertical tube 41 can appear in the first cap component 40 One distal end 40E, such as it is connected to elongate side wall 144, wherein vertical tube 41 possibly serves for resistance test contact point.

As illustrated in figures 2 and 2, the second cap component 50 also has parallel elongate side wall 52 and 54.In addition, the second cap component 50 limit M shape cross section as shown in Figure 2 B at the distal end 50E of the second cap component 50, and across such as between the 50E of distal end U-shaped cross-section shown in Fig. 2A.U-shaped cross-section includes the middle section (figure formed by elongate side wall 52 and 54 and bottom plate 53 2A), and by elongate side wall 152 and 154 and the bottom plate extended between side wall 152 and 154 153 two ends formed (Fig. 2 B).

First cap component 40 limits radial protrusion 46 at the 40E of distal end.Similarly, the second cap component 50 is in second component 50 Each distal end 50E at limit radial groove 146 and 246.Second cap component 50 is configured to use by its M tee section It is received in the butted line piece channel 51 in by the electrode tabs 17 of Fig. 1, for example, by each " protrusion " of M shape cross section Restriction and the nip in it, as described in figures 4 and 5 gradually.

158 closing, or " protrusion " above-mentioned in M shape cross section at one end of the lug plate channel 51 of Fig. 2 and 2B.The The radial protrusion 46 of one cap component 40 is configured to enter and thus engages 146 He of pairing radial groove of the second cap component 50 246.When the first cap 40, which is respectively relative to the second cap 50, is in the first and second positions, groove 146 and 246 is used for the One cap 40 is temporarily attached and secured to the second cap 50, as described below.First position is as shown in Figures 3 and 4.In addition, Fig. 5 institute The radial protrusion 46 in groove 246 shown is interconnected for electrode tabs 17 to be fixed in lug plate channel 51, that is, When the first cap component 40 is in the second position relative to the second cap component 50, by the side for lightly pushing the second cap component 50 Wall 52 and 54 is contacted with electrode tabs 17.

One possible embodiment of radial protrusion 46 and groove 146 is the embodiment of positioning mechanism, wherein radial protrusion 46 It is the radial protrusion being stamped and formed out at the distal end 40E of the first cap component 40, and groove 146 is at the 50E of distal end In second cap component 50 with matching hole or the suitable location structure of cavity format.Therefore, when radial protrusion 46 and groove 146 Or 246 (as described below) when being in alignment with each other, radial protrusion 46 enters groove 146 or 246, and the first cap component 40 is temporarily kept In the second cap component 50.

As described above, and as in Fig. 3 best seen from, the first cap component 40 it is mobile towards the second cap component 50 and with It is engaged.In shown position, the radial protrusion 46 of the first cap component 40 above the bottom surface 153 of the second cap component 50 first The groove 146 of second component is engaged at distance (D1).Therefore, the position of Fig. 3 corresponds to first position mentioned above, that is, will Multi-piece type bus cap assembly 30 is attached to the pre-assembled position before unit connection piece 17.

In Fig. 4, which depict the assembling steps after pre-assembled step shown in Fig. 3, unit connection piece 17 and 170 is slid into In the lug plate channel 51 of second component 50.Unit connection piece 17 and 170 can be the sun of two adjacent cells 16 (Fig. 1) Pole lug plate and cathode connection piece, vice versa.Since the first cap component 40 is at first distance (D1) relative to bottom plate 153 Position, lug plate channel 51 stays open, and enables unit connection piece 17 and 170 logical without lug plate is interferingly freely accessible to Road 51.In the exemplary embodiment, lug plate channel 51 can have about 0.35-0.40 millimeters of gap width, while single First lug plate 17 and 170 has about 0.15-0.25 millimeters of thickness, and the assembling stage shown in Fig. 4 leaves 0.1-0.25 milli The gap of rice.

Fig. 5 describes the multi-piece type bus cap assembly 30 in assembled position.Here, the first cap 40 it is mobile closer to The bottom surface 153 of second cap 40.The radial protrusion 46 of first cap component 40 is at the first distance (D1) of Fig. 3 B from the second cap structure The groove 146 of part 50 discharges, and engages with groove 246, the second place of certain distance (D2) above floor 153, That is, closer to floor 153.

Due to the incline structure of the elongate side wall 42 and 44 of the first cap component 40, the engagement with groove 246 eventually lead to The gentle touchdown of unit connection piece 17 and 170.That is, in the side wall of electrode tabs 17 and 170 and the first cap component 40 42 and 44 and second cap component 50 side wall 52 and 54 between form continuous physical contact.Hereafter, by the arrow LL of Fig. 5 A The laser schematically shown can be used for irradiation electrode lug plate 17 and 170 and multi-piece type bus cap assembly 30, especially edge The corresponding length of elongate side wall 42 and 44.

Electrode tabs 17 and 170 can be made of conductive metal foil.For example, in the exemplary embodiment, being used as anode The electrode tabs 17 or 170 of unit connection piece can be made of copper, and be used as the electrode tabs 17 of cathode electrode unit lug plate Or 170 can be made of aluminium.In other embodiments, the first cap component 40 can be made of bimetallic material, such as copper and aluminium Combination.This embodiment is shown in Fig. 2-5B, for example, when being welded to copper electrode lug plate 17 or 170, elongate side wall 42 Or 44 be made of copper, or when being welded to aluminium electrode lug plate 17 or 170, is alternatively made of aluminium.

In other embodiments, the second cap component 50 shown in Fig. 1-5 can be partly by molded plastics or other non-gold Belong to material to constitute.This " mixing material " embodiment is shown as multi-piece type bus cap assembly 230 in figs. 6 and 7, in order to simply rise See, the first cap component 40 be omitted, may the bimetallic material described in embodiment as above constitute.Relative to Fig. 2's -5 Embodiment, mixing material configuration can reduce weight and tenor.That is, the alternative of Fig. 6 and 7 uses metal plate Or a part of insert as side wall 352 and 354 wherein plate or is inserted rather than with entire second cap component 50 of metal construction Enter object and is respectively labeled as 352I and 354I.For example, when being constituted together with the electrode tabs 17 and 170 being made of respectively copper and aluminium When, plate or insert labeled as 352I and 354I can be made of copper and aluminium respectively.Bottom plate 253 and the second cap component 250 Rest part can be made of plastics.This side wall 352 and 354 can coat molding or side wall in the second cap component 250 352 and 354 can independently form and be inserted into the mating groove (not shown) in second component 250.

According to the disclosure, it will be recognized by those of ordinary skill in the art that the method for manufacture battery component 10 is also can be real Existing.This method may include for example providing above-mentioned first and second cap component 40 and 50 by punching press or pressing process, so It is afterwards in the first position of the bottom plate 53 relative to the second cap component 50, i.e. the distance D1 of Fig. 3 B, the first cap component 40 is temporarily attached It is connected to the second cap component 50.The radial protrusion 46 of first cap component 40 can be by being inserted into the radial direction of the second cap component 50 by attachment It is completed in groove 146.

Hereafter, this method may include that corresponding first and second electrode tabs 17 and 170 are inserted into lug plate channel In 51, and the first cap component 40 remains attached to the second cap component 50 in above-mentioned first position.Then the first cap component 40 is moved The second position of the bottom plate 153 closer to the second cap component 50 is moved, so that the first cap component 40 and the second cap component 50 are gently Ground contacts the first and second electrodes 17 and 170.Hereafter this method may include by the first and second laser weldings of electrode 17 and 170 Onto the first and second cap components 40 and 50 of multi-piece type bus cap assembly 30.

Multi-piece type bus cap assembly 30 described herein passes through the complementary structure via the first and second cap components 40 and 50 It eliminates external fixture and simplifies the manufacture of the battery component 10 of Fig. 1.The configuration of the disclosure cap assembly 30 ensures the first cap component 40 effectively clamp certainly when suppressing the second cap component 50.Resulting assembly is minimum by the seriousness of spatter in turn Change.Meanwhile first and second cap component 40 and 50 can keep together in the different piece of assembling process, by with radial convex Play the docking feature of 46 and the form of groove 146 and 246.In view of the disclosure, these and other adjoint advantages be should be understood that.

Although some optimal modes and other embodiments are described in detail, exist for practicing in appended right The various supplement or replacements of this introduction limited in it is required that.It would be recognized by those skilled in the art that not departing from this public affairs In the case where the range opened, it can modify to the disclosed embodiments.In addition, this design clearly includes described member The combination and sub-portfolio of part and feature.The detailed description and the accompanying drawings have supported and described this introduction, at the same the range of this introduction only by Claim limits.