CN207459047U

CN207459047U - Battery modules

Info

Publication number: CN207459047U
Application number: CN201721630981.3U
Authority: CN
Inventors: 刘小荣; 赵宾; 陆巍巍; 温昌金; 朱涛声
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2017-11-29
Filing date: 2017-11-29
Publication date: 2018-06-05
Anticipated expiration: 2027-11-29

Abstract

The utility model is related to a kind of battery modules, including：Multiple single batteries, are arranged side by side along the first direction, and each single battery includes head cover and the electrode terminal stretched out from head cover；Flexible PCB, it extends in a first direction, flexible PCB includes the connecting portion being spaced apart in a first direction and the buffer part being connected between adjacent connecting portion, and flexible PCB is connected to electrode terminal by connecting portion, and buffer locations are between adjacent single battery；Fixed component is arranged at buffer part both sides, and can flexible PCB be fixed on head cover in a first direction.In the utility model, when relative displacement occurs between neighboring unit cell, this vibration can be absorbed by buffer part, so as to weaken the vibration of connecting portion on flexible PCB, the impact that flexible PCB is subject to by fixed component is transferred directly to buffer part, the impact force that connecting portion is subject to is reduced to the greatest extent, so as to be further ensured that the bonding strength between connecting portion and electrode terminal.

Description

Battery modules

Technical field

The utility model is related to battery technology field, more particularly to a kind of battery modules.

Background technology

In battery technology growing today, reliability of structure is that battery system is transported safely in battery pack and battery pack Capable guarantee.In order to ensure the safety movement of battery system, battery modules can be to information such as the voltage of each single battery and temperature It being sampled, general battery modules are sampled using conductor wire, need to fix using harness isolation board progress harness at this time, The problems such as this method of sampling is more there are harness, and management difficulty is big and multiple bunch occupied spaces are big, therefore select flexible electrical Road plate (English full name：Flexible Primted Circuit；English abbreviation：FPC) combination of component and bonding technology is to list Body battery is sampled, and FPC components are generally fixed on the isolation board of single battery by modes such as glue stickings, and are connected to connection Piece, isolation board relative monomer battery and connection sheet can move, when battery is vibrated or impacts, isolation board relative monomer electricity Pond can move, and can influence the bonding strength between FPC and connection sheet, may finally cause bonding failure.

Therefore, there is an urgent need for a kind of new battery modules.

Utility model content

The utility model embodiment provides a kind of battery modules, can effectively absorb vibratory impulse power, ensures flexible electrical Bonding strength between road plate and electrode terminal.

On the one hand the utility model provides a kind of battery modules, including：Multiple single batteries, set side by side along the first direction It puts, each single battery includes head cover and the electrode terminal stretched out from head cover；Flexible PCB extends in a first direction, flexible Circuit board includes the connecting portion being spaced apart in a first direction and the buffer part being connected between adjacent connecting portion, flexible electrical Road plate is connected to electrode terminal by connecting portion, and buffer locations are between adjacent single battery；Fixed component, in a first direction On be arranged at buffer part both sides, and flexible PCB can be fixed on head cover.

One side according to the present utility model, buffer part includes more than one protrusion, by flexible PCB bent Into.

One side according to the present utility model, buffer part include respective protrusions and run through the cushion hole of flexible PCB, When the number of protrusion is more than two, cushion hole is set at least through a protrusion.

One side according to the present utility model, protrusion include submitting the angled section for distribution and bending in a first direction Area, cushion hole are arranged at bent area.

One side according to the present utility model, cushion hole at least two, and be arranged side by side in a second direction in protrusion, Second direction is perpendicular to first direction.

One side according to the present utility model, fixed component include：Spaced buckle column, adjacent buckle column it Between form buckle slot；Be buckled handle, and including opposite first end and second end, first end is rotatablely arranged at single battery, the Two ends can be snapped in buckle slot, and flexible PCB is limited between buckle handle and single battery.

One side according to the present utility model, buckle column include the fixing end and stop end that are oppositely arranged, and buckle column leads to It crosses fixing end and is fixed on single battery, the stop end of adjacent buckle column extends along direction close to each other, to form buckle slot； One side of the stop end away from fixing end is provided with guide surface, enters buckle slot with the second end of guiding buckle handle.

One side according to the present utility model, fixed component include mounting hole, through flexible PCB and positioned at buffering Portion both sides；Fixed column, by stretching out on head cover and being adapted with mounting hole, so that flexible PCB is consolidated by mounting hole and fixed column Due to head cover.

One side according to the present utility model is provided with heavy platform on electrode terminal, is recessed by the lateral surface of electrode terminal It is formed；Head cover outer surface is provided with sampler tray, is connected to heavy platform；Connecting portion has been extended connection neck towards sampler tray, so that Connecting portion is connected to sampler tray.

One side according to the present utility model is provided with connecting pole in heavy platform, and sampler tray extends heavy platform, and is provided with The connecting hole being adapted with connecting pole, sampler tray are connected to heavy platform by connecting hole and connecting pole；Or, the company of being provided on sampler tray Bridge is connect, connecting bridge is domed, and the height of connecting bridge is less than the height of electrode terminal, and it is heavy that sampler tray is connected to by connecting bridge Platform.

In the utility model embodiment, flexible PCB is connected to the electrode terminal of single battery, on flexible PCB Buffer part is provided with, it, can be by buffer part shock-absorbing, so as to weaken shaking for flexible PCB when flexible PCB is impacted It is dynamic, and when battery modules are subject to impact to shake, relative displacement often occurs between adjacent single battery, it will be slow The portion of punching can be effectively absorbed between being arranged at adjacent single battery due to the vibration that relative displacement occurs for single battery and generates； Fixed component is located at the both sides of buffer part, and the impact that can be subject to flexible PCB ends in fixed component, and impact is direct Buffer part is transferred to, reduces the impact force that connecting portion is subject to the greatest extent, so as to be further ensured that between connecting portion and electrode terminal Bonding strength ensures the stability of sampling, in addition, the flexible PCB of the utility model embodiment is directly fixed on single battery Head cover, without separately setting isolation board, can effectively reduce assembly difficulty, save installation time, while save material and cost.

Description of the drawings

The feature of the utility model exemplary embodiment, advantage and technique effect described below with reference to the accompanying drawings.

Fig. 1 is the structure diagram of the battery modules of the utility model one embodiment；

Fig. 2 is the blown-up partial detail at the A of Fig. 1；

Fig. 3 is the local detail structure diagram of the battery modules of the utility model one embodiment；

Fig. 4 is the local detail structure diagram of the battery modules of the utility model one embodiment；

Fig. 5 is the blown-up partial detail at the B of Fig. 4；

Fig. 6 is the structure diagram of the battery modules of the utility model another embodiment.

Reference sign：110th, single battery；111st, head cover, 112, electrode terminal；112a, heavy platform；112b, connection Column；113rd, fixed column；114th, sampler tray；114a, connecting hole；115th, connecting bridge；211st, connecting portion；211a, connection neck；212nd, delay Rush portion；213rd, it is raised；213a, angled section；213b, bent area；214th, cushion hole；215th, mounting hole；221st, be buckled column；222nd, block Button Handle；221a, fixing end；221b, stop end；221c, guide surface.

In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to actual ratio.

Specific embodiment

The feature and exemplary embodiment of the various aspects of the utility model is described more fully below.It is retouched in detail in following In stating, it is proposed that many details, in order to provide the comprehensive understanding to the utility model.But for people in the art It will be apparent that the utility model can be implemented in the case of some details being not required in these details for member. Below the description of embodiment is used for the purpose of providing to the more preferable of the utility model by showing the example of the utility model Understanding.In the the accompanying drawings and the following description, at least part of known features and technology are not illustrated, to avoid to this reality Unnecessary obscure is caused with new；Also, for clarity, it may be exaggerated the size of part-structure.In addition, it is hereinafter retouched Feature, the structure or characteristic stated can be in any suitable manner incorporated in one or more embodiments.

The noun of locality of middle appearance described below is the direction shown in figure, is not the electrical connection group to the utility model Part and the concrete structure of battery modules are defined.In the description of the utility model, it is also necessary to explanation, unless otherwise bright True regulation and restriction, term " installation ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or removable It unloads connection or is integrally connected；It can be directly connected, can also be indirectly connected.For those of ordinary skill in the art Speech, visual concrete condition understand concrete meaning of the above-mentioned term in the utility model.

The utility model in order to better understand, with reference to Fig. 1 to Fig. 6 according to the battery mould of the utility model embodiment Group is described in detail.

Referring to Fig. 1, Fig. 1 illustrates the structure diagram of the battery modules of the utility model one embodiment, battery Module includes multiple single batteries 110, and each single battery 110 includes head cover 111 and stretches out the electrode terminal of the head cover 111 112；Flexible PCB extends in a first direction, and flexible PCB includes 211 He of connecting portion being spaced apart in a first direction The buffer part 212 being connected between adjacent connecting portion 211, flexible PCB are connected to electrode terminal by connecting portion 211 112, buffer part 212 is between adjacent single battery 110；Fixed component is arranged at 212 liang of buffer part in a first direction Side, and flexible PCB can be fixed on to head cover 111.The buffer part 212 being bent to form is arranged at intervals on flexible PCB, When flexible PCB is impacted, can be connected by the deformation of buffer part 212 come shock-absorbing so as to weaken on flexible PCB The vibration that portion 211 is subject to, and when battery modules are subject to impact to shake, often between adjacent single battery 110 Generation relative displacement, buffer part 212 being arranged between adjacent single battery 110 can effectively absorb due to single battery 110 vibrations that relative displacements occur and generate；Fixed component is located at the both sides of buffer part 212, can be subject to flexible PCB Impact end in fixed component, impact is transferred directly to buffer part 212, reduces the impact force that connecting portion 211 is subject to the greatest extent, So as to the bonding strength being further ensured that between connecting portion 211 and electrode terminal 112, ensure the stability sampled, in addition, this reality The head cover 111 of single battery 110 is directly fixed on the flexible PCB of new embodiment, without separately setting isolation board, Neng Gouyou Effect reduces assembly difficulty, saves installation time, while saves material and cost.

It is appreciated that flexible PCB is fixed on there are many embodiments of head cover 111, such as on flexible PCB Location hole is offered, positioning column is provided on head cover 111, flexible PCB is positioned at head cover by location hole and positioning column first 111, buffer part 212 is made between two adjacent single batteries 110, it is then solid by gluing, welding, hot melt, melting welding etc. Determining mode makes flexible PCB be fixed on head cover 111.

Also referring to Fig. 3, there are many set-up modes of buffer part 212, as a kind of optional embodiment, buffer part 212 include more than one raised 213, and protrusion 213 is bent to form by flexible PCB.Wherein buffer part 212 is by flexible circuit Plate, which is bent to form, refers to that flexible PCB is bent to form along perpendicular to the direction of plane where the flexible PCB.It is appreciated that That there are many set-up modes of protrusion 213, such as the section of each protrusion 213 is arc-shaped, two neighboring raised 213 it is convex Outgoing direction is identical or opposite etc..

Further alternative, buffer part 212 further includes respective protrusions 213 and runs through the cushion hole 214 of flexible PCB, when When the number of protrusion 213 is more than two, cushion hole 214 is set at least through a protrusion 213.It is set in buffer part 212 There is cushion hole 214, can effectively reduce the rigidity of buffer part 212, increase the flexibility of buffer part 212, further improve buffer part 212 shock-absorbing effect.

In some optional embodiments, protrusion 213 includes submitting the angled section 213a and curved for distribution in a first direction Folding area 213b, cushion hole 214 are arranged at bent area 213b.When flexible PCB is impacted, rely primarily in buffer part 212 Bent area 213b deform to absorb vibration, cushion hole 214 can effectively reduce the firm of bent area 213b by bent area 213b Degree further improves the shock-absorbing effect of buffer part 212.Cushion hole 214 can be one or more, when cushion hole 214 is When more than two, more than two cushion holes 214 are arranged side by side in a second direction in protrusion 213, and second direction is perpendicular to first Direction.Multiple cushion holes 214 being arranged side by side can further reduce the flexibility of buffer part 212, and improve the suction of buffer part 212 Shake effect.

Also referring to Fig. 1 and Fig. 2, it is to be understood that there are many set-up modes of fixed component, as a kind of optional Embodiment, fixed component includes：Spaced buckle column 221, forms buckle slot (figure between adjacent buckle column 221 Not shown in)；Be buckled handle 222, and including opposite first end and second end, first end is rotatablely arranged at single battery 110 Head cover 111, second end can be snapped in buckle slot, by flexible PCB be limited in buckle handle 222 and single battery 110 it Between.After buckle column 221 and buckle handle 222 are individually fixed on single battery 110, by rotating the handle 222 that is buckled, order buckle handle 222 second end is arranged in buckle slot, you can flexible PCB is fixed between buckle handle 222 and single battery 110, knot Structure is simple, easy to operate.

Further, there are many set-up modes of buckle column 221, as an alternative embodiment, buckle column 221 wraps The end 221a and stop end 221b that is relatively fixed is included, buckle column 221 can be fixed on single battery 110 by fixing end 221a, The stop end 221b of adjacent buckle column 221 extends along direction close to each other, to form buckle slot；Stop end 221b is away from solid The one side of fixed end 221a is provided with guide surface 221c, enters buckle slot with the second end of guiding buckle handle 222.As shown in figure 3, card Button column 221 is fixed on the head cover 111 of single battery 110 by fixing end 221a, and the stop end 221b of adjacent buckle column 221 is along hanging down Directly in buckle column 221 direction it is close to each other extend to form, buckle slot, backstop are formed between head cover 111 and stop end 221b End one sides of the 221b away from fixing end 221a is provided with guide surface 221c, and guide surface 221c dips down along direction close to each other Tiltedly, order buckle handle 222 is easier to be pressed into buckle slot under the guiding function of guide surface 221c.In order to ensure fastener Meanwhile convenient card Button Handle 222 enters in buckle slot, the opening width in buckle slot a directions along figure is more than the width of buckle handle 222 1/3rd, and less than the half of buckle 222 width of handle, the height in buckle slot b directions along figure is slightly larger than buckle handle 222 height；Handle 222 be buckled in triangular prism shape, and with the top extended downward, the angle of inclination of guide surface 221c and buckle Angle of inclination on handle 222 with the guide surface 221c faces contacted is consistent substantially, so as to further reduce driving card The second end of Button Handle 222 enters driving force required during buckle slot, and flexible PCB is caused in order to reduce buckle handle 222 in addition Damage, what buckle handle 222 was in contact with flexible PCB stupefied does fillet processing.

Also referring to Fig. 4, as the optional embodiment of another fixed component, fixed component includes mounting hole 215, it is set through flexible PCB, and positioned at 212 both sides of buffer part；Fixed column 113 is stretched out by the head cover 111 and with consolidating Determine hole 215 to be oppositely arranged.In these optional embodiments, connecting portion 211 is fixed on by mounting hole 215 and fixed column 113 Head cover 111, mounting hole 215 and fixed column 113 are located at the both sides of buffer part 212, can cut the impact that flexible PCB is subject to Fixed component is terminated in, impact is transferred to buffer part 212, reduces the impact force that connecting portion 211 is subject to the greatest extent, so as to further protect The stability connected between card connecting portion 211 and electrode terminal 112.Wherein, connecting portion 211 passes through mounting hole 215 and fixed column 113 are fixed on there are many set-up modes of head cover 111, such as when mounting hole 215 is sheathed on fixed column 113 and then will connection Portion 211 is adhered to head cover 11 or connecting portion 211 is welded in fixed column 113 by mounting hole 215, ensures 211 He of connecting portion Stable connection between fixed column 113.

Also referring to Fig. 5 and Fig. 6, in some optional embodiments, heavy platform 112a is provided on electrode terminal 112, It is recessed by the lateral surface of electrode terminal 112 and is formed；111 outer surface of head cover is provided with sampler tray 114, is connected to heavy platform 112a；Even Socket part 211 is extended towards sampler tray 114 connection neck 211a, so that connecting portion 211 is connected to sampler tray 114.At these In optional embodiment, heavy platform 112a is provided on electrode terminal 112, sampler tray 114 is connected to heavy platform 112a, so as to connect In electrode terminal 112, by setting heavy platform 112a, it can prevent the connector between sampler tray 114 and heavy platform 112a from protruding from Electrode terminal 112 and occupy the space in battery modules.Wherein, the lateral surface of electrode terminal 112 refers to remote on electrode terminal 112 Side from head cover 111.

It is understood that there are many connection modes of sampler tray 114 and heavy platform 112a, as a kind of optional embodiment party Formula is provided with connecting pole 112b on heavy platform 112a, and sampler tray 114 extends to heavy platform 112a, is provided with and connects on sampler tray 114 The connecting hole 114a that column 112b is adapted, sampler tray 114 are connected to heavy platform 112a by connecting hole 114a and connecting pole 112b, In these optional embodiments, since the height of heavy platform 112a is less than the whole height of electrode terminal 112, sampler tray 114 extends Electrode terminal 112 will not be protruded from during to heavy platform 112a, so as to save battery modules inner space, improves the energy of battery modules Metric density, while the mutual cooperation of connecting hole 114a and connecting pole 112b can ensure to connect between sampler tray 114 and heavy platform 112a The stability connect.

As the connection mode between another sampler tray 114 and heavy platform 112a, connecting bridge is provided on sampler tray 114 115, connecting bridge 115 is domed, and the height of connecting bridge 115 is less than the height of electrode terminal 112, and sampler tray 114 passes through connection Bridge 115 is connected to heavy platform 112a.In these optional embodiments, sampler tray 114 is connected to heavy platform by connecting bridge 115 112a, connecting bridge 115 is domed, and connecting bridge 115 is made to have good flexibility, so as to ensure connecting bridge 115 and heavy platform 112a it Between the stability that connects, the height of connecting bridge 115 is less than the height of electrode terminal 112, so as to which connecting bridge 115 be made not occupy electricity The inner space of battery modules is saved in extra space in the module of pond, effectively improves the energy density of battery modules.

Although the present utility model has been described by reference to the preferred embodiments, but the model of the utility model is not being departed from In the case of enclosing, various improvement can be carried out to it and component therein can be replaced with equivalent.Especially, as long as not depositing In structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model It is not limited to specific embodiment disclosed herein, but all technical solutions including falling within the scope of the appended claims.

Claims

1. a kind of battery modules, which is characterized in that including：

Multiple single batteries, are arranged side by side along the first direction, and each single battery includes head cover and stretched out from the head cover Electrode terminal；

Flexible PCB is fixed on the head cover and extends along the first direction, and the flexible PCB is included in described the The connecting portion being spaced apart on one direction and the buffer part being connected between the adjacent connecting portion, the flexible PCB lead to It crosses the connecting portion and is connected to the electrode terminal, the buffer locations are between the adjacent single battery；

Fixed component is arranged at the buffer part both sides, and can fix the flexible PCB in said first direction In the head cover.

2. battery modules according to claim 1, which is characterized in that the buffer part includes more than one protrusion, institute Protrusion is stated to be bent to form by the flexible PCB.

3. battery modules according to claim 2, which is characterized in that the buffer part includes the corresponding protrusion and runs through The cushion hole of the flexible PCB, when the number of the protrusion is more than two, the cushion hole is at least through an institute State raised setting.

4. battery modules according to claim 3, which is characterized in that the protrusion is included on the first direction alternately The angled section and bent area of distribution, the cushion hole are arranged at the bent area.

5. battery modules according to claim 3, which is characterized in that the cushion hole at least two, and along second party To being arranged side by side in the protrusion, the second direction is perpendicular to the first direction.

6. battery modules according to claim 1, which is characterized in that the fixed component includes：

Spaced buckle column forms buckle slot between the adjacent buckle column；

Be buckled handle, and including opposite first end and second end, the first end is rotatablely arranged at the single battery, described Second end can be snapped in the buckle slot, by the flexible PCB be limited in it is described buckle handle and the single battery it Between.

7. battery modules according to claim 6, which is characterized in that the buckle column include the fixing end that is oppositely arranged and Stop end, the buckle column are fixed on the single battery, the backstop of the adjacent buckle column by the fixing end End extends along direction close to each other, to form the buckle slot；One side of the stop end away from the fixing end is provided with Guide surface enters the buckle slot with the second end for guiding the buckle handle.

8. battery modules according to claim 1, which is characterized in that the fixed component includes：

Mounting hole, through the flexible PCB and positioned at the buffer part both sides；

Fixed column, by the head cover stretch out and be adapted with the mounting hole so that the flexible PCB pass through it is described solid Determine hole and the fixed column is fixed on the head cover.

9. battery modules according to claim 1, which is characterized in that

Heavy platform is provided on the electrode terminal, is recessed by the lateral surface of the electrode terminal and is formed；

The head cover outer surface is provided with sampler tray, is connected to the heavy platform；

The connecting portion has been extended connection neck towards the sampler tray, so that the connecting portion is connected to the sampler tray.

10. battery modules according to claim 9, which is characterized in that

Connecting pole is provided in the heavy platform, the sampler tray extends the heavy platform, and is provided with and is mutually fitted with the connecting pole The connecting hole matched somebody with somebody, the sampler tray are connected to the heavy platform by the connecting hole and connecting pole；

Or, connecting bridge is provided on the sampler tray, the connecting bridge is domed, and the height of the connecting bridge is less than the electricity The height of extreme son, the sampler tray are connected to the heavy platform by the connecting bridge.