CN220042188U - Battery module and power utilization device - Google Patents

Abstract

The embodiment of the utility model provides a battery module and an electric device, and relates to the technical field of batteries. The battery module comprises a battery monomer, wherein a pole is arranged on the battery monomer; the isolation plate is arranged on one side of the battery cell, on which the pole is arranged, and is provided with a through hole; the tab, the tab includes the tab main part and the utmost point post lid of being connected with the tab main part, and the tab main part joint is in the through-hole, and utmost point post lid looks joint, and it can promote the stability that the tab is connected with battery utmost point post.

Description

Battery module and power utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module and an electric device.

Background

With the rapid development of the lithium battery industry, for example, in the vehicle industries such as an excavator, a bulldozer and the like, the traditional fuel power system is gradually replaced by a lithium battery pack, but the vehicles generally walk on a bumpy road surface due to the special use environment, so that vibration can be generated during working, and the internal structure of the lithium battery is fragile, so that the loosening of parts in the battery pack can be caused in the environment of high-intensity vibration for a long time, and particularly, when the connection of a tab and a pole of the battery is loosened or even disconnected, the whole battery system can be caused to give an alarm, so that the normal operation of the vehicle is influenced.

Disclosure of Invention

The utility model aims to provide a battery module, which can improve the stability of connection of a tab and a battery pole.

The utility model further provides an electric device which can improve the stability of connection of the tabs and the battery poles.

Embodiments of the utility model may be implemented as follows:

an embodiment of the present utility model provides a battery module including:

the battery unit is provided with a pole;

the isolation plate is arranged on one side of the battery cell, provided with the pole, and is provided with a through hole;

the tab comprises a tab main body and a pole cover connected with the tab main body, wherein the tab main body is clamped in the through hole, and the pole cover is clamped with the pole.

Optionally, a first clamping groove is formed in one side, facing the pole, of the pole cover, and the first clamping groove is clamped with the pole.

Optionally, a welding hole is formed in the tab main body, and the pole is exposed out of the welding hole.

Optionally, the welding hole is a counter bore.

Optionally, be provided with first boss in the through-hole, first boss supports the tab main part, be provided with the reference column on the first boss, the locating hole has been seted up on the tab main part, the locating hole with the reference column cooperation location.

Optionally, the tab further includes a voltage acquisition rod, the voltage acquisition rod is connected with the tab body, the battery module further includes an acquisition harness, and the voltage acquisition rod is connected with the acquisition harness.

Optionally, a second clamping groove is formed in the isolation plate, and the voltage acquisition rod is clamped in the second clamping groove.

Optionally, the battery module further comprises an acquisition wire harness adapter plate, a second boss is arranged on the isolation plate, and the second boss supports the acquisition wire harness adapter plate;

the collecting wire harness adapter plate is provided with a third clamping groove, and the voltage collecting rod and the collecting wire harness are clamped in the third clamping groove.

Optionally, the isolating plate is provided with an avoidance hole, and the pressure relief opening of the battery monomer is exposed out of the avoidance hole.

The embodiment of the utility model also provides an electric device comprising the battery module.

The battery module and the power utilization device have the beneficial effects that: in order to improve the stability that the tab is connected with the battery post, through set up the division board in the free post side of battery, offer the through-hole on the division board, with tab main part joint in the through-hole, post lid and post joint to with tab and post relatively fixed, when the vehicle marcing on comparatively jolt road surface, the tab is difficult for not hard up with the post, has promoted the stability that the tab is connected with the battery post.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a battery module according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a separator according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of a structure of a patch according to an embodiment of the present utility model;

FIG. 5 is an exploded view showing the assembly relationship of the tabs and the pole in an embodiment of the present utility model;

FIG. 6 is a partial exploded view showing the connection relationship between a voltage acquisition rod and an acquisition harness in an embodiment of the present utility model;

fig. 7 is an exploded view of the portion B of fig. 6.

Icon: 10-a battery module; 100-battery cells; 110-pole; 200-isolating plates; 210-a through hole; 220-a first boss; 221-positioning columns; 230-a second card slot; 240-a second boss; 250-avoiding holes; 300-bara; 310-a wafer body; 311-welding holes; 312-positioning holes; 320-pole cap; 330-a voltage acquisition rod; 400-collecting wire harnesses; 500-collecting a wiring harness adapter plate; 510-a third card slot; 600-collecting end pressing plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

The inventor of the utility model finds that the vehicles taking the battery pack as a power system such as an excavator, a bulldozer and the like generally walk on a bumpy road surface due to special use environment, so that vibration can be generated during operation, and because the internal structure of a lithium battery is fragile, the loosening of parts in the battery pack can be caused in the high-intensity vibration environment for a long time, and particularly, when the connection between a tab and a pole of a battery is loosened or even disconnected, the whole battery system can be caused to give an alarm, so that the normal operation of the vehicle is influenced.

Referring to fig. 1 to 5, a battery module 10 according to an embodiment of the present utility model includes a battery cell 100, a separator 200, and a tab 300; the battery cell 100 is provided with a post 110; the isolation plate 200 is arranged on one side of the battery cell 100 provided with the pole 110, and the isolation plate 200 is provided with a through hole 210; the tab 300 includes a tab main body 310 and a post cover 320 connected to the tab main body 310, where the tab main body 310 is clamped in the through hole 210, and the post cover 320 is clamped with the post 110.

The battery cells 100 are sequentially arranged in a plurality, and the isolation plate 200 is arranged on one side of the battery cells 100 where the pole 110 is arranged; the isolation plate 200 is provided with a plurality of through holes 210, and the positions of the poles 110 and the through holes 210 correspond; when the tab body 310 is clamped in the through hole 210, the pole cover 320 faces the pole 110 and is clamped with the pole 110; the tab body 310 and the pole cover 320 are formed at one time by die casting, thereby ensuring the structural strength of the entire tab 300.

In fact, two pole covers 320 are symmetrically disposed on the single tab body 310, and the two pole covers 320 are respectively clamped with the two poles 110.

In order to improve the stability of the connection between the tab 300 and the battery post 110, the isolation board 200 is arranged on the side of the post 110 of the battery unit 100, the through hole 210 is formed in the isolation board 200, the tab main body 310 is clamped in the through hole 210, the post cover 320 is clamped with the post 110, the tab 300 and the post 110 are fixed relatively, and when a vehicle runs on a bumpy road, the tab 300 and the post 110 are not easy to loosen, so that the stability of the connection between the tab 300 and the battery post 110 is improved.

In addition, the pole cover 320 is matched with the pole 110, so that the contact area between the tab 300 and the pole 110 can be increased, and the surface temperature of the tab 300 can be reduced when the battery module 10 works, thereby prolonging the service life of the whole battery system.

It should be noted that, the tabs 300 at two ends of the separator 200 are the output tabs 300, and the remaining tabs 300 are the series tabs 300, and the series tabs 300 are all exemplified as the tabs 300 in the embodiment of the present utility model.

In an alternative embodiment, a side of the pole cover 320 facing the pole 110 is provided with a first clamping groove, and the first clamping groove is clamped with the pole 110.

It should be noted that, the size of the notch of the first clamping groove is smaller than or equal to the size of the end surface of the top of the pole 110, so that when the pole 110 is clamped in the first clamping groove, the pole 110 can be stably connected with the pole cover 320, and the connection stability of the pole 110 and the tab 300 is improved.

In an alternative embodiment, the tab body 310 is provided with a welding hole 311, and the pole 110 is exposed to the welding hole 311.

The welding hole 311 penetrates the tab body 310 and the post cover 320, and when welding the tab 300, an operator can observe the post 110 below the tab 300 through the welding hole 311, thereby facilitating welding.

Wherein, the welding hole 311 is a counter bore. Providing the welding hole 311 as a counter bore can increase welding strength.

In an alternative embodiment, a first boss 220 is disposed in the through hole 210, the first boss 220 supports the tab main body 310, a positioning column 221 is disposed on the first boss 220, a positioning hole 312 is disposed on the tab main body 310, and the positioning hole 312 is located in cooperation with the positioning column 221.

It should be noted that two first bosses 220 are symmetrically disposed in the through hole 210, two first bosses 220 support the tab main body 310 at the same time, each first boss 220 is provided with a positioning column 221, two positioning holes 312 are formed in a single tab main body 310, and the two positioning holes 312 are in plug-in fit with the two positioning columns 221 to position the tab 300.

In the process of installing the tab 300, the tab 300 is positioned by utilizing the plug-in fit of the two positioning holes 312 and the two positioning columns 221, the positions between the tab 300 and the isolation plate 200 are relatively fixed, at the moment, the tab 300 and the pole 110 are welded to ensure the stability of welding, and the tab 300 can be rapidly positioned by the plug-in fit of the positioning columns 221 and the positioning holes 312.

In other embodiments, the positioning post 221 is disposed on the tab body 310, the positioning hole 312 is disposed on the first boss 220, and when the tab 300 is assembled, the positioning post 221 on the tab body 310 is in plug-in fit with the positioning hole 312 on the first boss 220, so that quick positioning can be completed.

In an alternative embodiment, the tab 300 further includes a voltage collection lever 330, the voltage collection lever 330 is connected with the tab body 310, the battery module 10 further includes a collection harness 400, and the voltage collection lever 330 is connected with the collection harness 400.

It should be noted that, the voltage collecting rod 330 is connected to the tab main body 310, the voltage collecting rod 330 is used for collecting the voltage of the single battery when the tab 300 is electrically connected to the pole 110, and the voltage collecting rod 330 transmits the voltage information of the single battery to the battery management system through the collecting harness 400 after collecting the voltage of the single battery.

In an alternative embodiment, the isolation board 200 is provided with a second clamping groove 230, and the voltage collecting rod 330 is clamped in the second clamping groove 230.

It should be noted that, since the collecting wire harness 400 is disposed at one end of the length direction of the isolation board 200, the distances between the tabs 300 at different positions and the collecting wire harness 400 are different, and thus the lengths of the voltage collecting bars 330 on the tab main bodies 310 at different positions are different; be provided with a plurality of second draw-in grooves 230 on the division board 200, the extending direction of a plurality of second draw-in grooves 230 is the same with the length direction of division board 200, and the extending direction of a plurality of second draw-in grooves 230 is parallel to each other, and single voltage acquisition pole 330 joint is fixed in corresponding second draw-in groove 230, can guarantee the stability that voltage acquisition pole 330 is connected with the collection pencil 400 electricity, and then guarantees the stability of voltage acquisition.

Referring to fig. 6 and 7, in an alternative embodiment, the battery module 10 further includes an acquisition harness adapter plate 500, and the isolation plate 200 is provided with a second boss 240, where the second boss 240 supports the acquisition harness adapter plate 500; the collection wire harness adapter plate 500 is provided with a third clamping groove 510, and the voltage collection rod 330 and the collection wire harness 400 are both clamped in the third clamping groove 510.

It should be noted that, the second boss 240 is provided with a mounting hole, through which the collection wire harness adapter plate 500 is fixed to the second boss 240, and the second boss 240 supports the collection wire harness adapter plate 500 so that the collection wire harness adapter plate 500 is approximately flush with the top surface of the isolation board 200; the opposite ends of the voltage collection rod 330 and the collection wire harness 400 are simultaneously clamped in the third clamping groove 510 on the collection wire harness adapter plate 500 and are electrically connected, so that the stability of voltage collection is further improved.

In addition, be provided with the hole site on the collection pencil keysets 500, the voltage acquisition pole 330 also is provided with corresponding hole site with the one end that gathers pencil 400 in opposite directions, still be provided with collection end clamp plate 600 on the collection pencil keysets 500, also be provided with the hole site on the collection end clamp plate 600, pass the hole site on collection end clamp plate 600 in proper order through fastener such as bolt, the hole site on voltage acquisition pole 330 or the collection pencil 400 is last with the hole phase cooperation on the collection pencil keysets 500, in order to further fix voltage acquisition pole 330 and collection pencil 400, promote the stability that voltage acquisition pole 330 and collection pencil 400 electricity are connected.

In an alternative embodiment, the isolation plate 200 is provided with a relief hole 250, and the pressure relief opening of the battery cell 100 is exposed to the relief hole 250.

Wherein, the avoidance hole 250 is positioned on the central line of the isolation plate 200, two sides of the avoidance hole 250 are respectively provided with a plurality of parallel second clamping grooves 230, and one side of the second clamping grooves 230 away from the avoidance hole 250 is provided with a through hole 210; the number of the avoidance holes 250 is multiple, the plurality of avoidance holes 250 are sequentially formed along the length direction of the isolation plate 200, the plurality of avoidance holes 250 are in one-to-one correspondence with the pressure relief openings of the plurality of battery cells 100 and are matched in position, and when gas in the battery cells 100 is discharged through the pressure relief openings, the avoidance holes 250 can be used for discharging the gas.

In addition, the battery module 10 further includes end plates, one end plate is provided at each of both ends in the arrangement direction of the battery cells 100, and the battery cells 100 and the end plates are restrained and fixed by packing belts.

The assembly sequence of the battery module 10 in the embodiment of the utility model is approximately as follows:

after the battery cells 100 are sequentially arranged, two ends of the arranged battery cells 100 are respectively provided with an end plate, the battery cells 100 and the end plates are restrained and fixed through packing belts, then the isolation plate 200 is assembled above the battery module 10, a plurality of serial connection tabs 300 and pole outlet tabs 300 are placed in through holes 210 on the isolation plate 200, positioning holes 312 on the tabs 300 are matched with positioning columns 221 on the first boss 220 in an inserting manner, finally the tabs 300 and the pole columns 110 are welded through corresponding welding equipment, and an acquisition wire harness 400 is connected with a voltage acquisition rod 330 after the operation is finished, so that the voltage of the battery module 10 is acquired into a battery management system.

The embodiment of the utility model also provides an electric device, at least taking the battery module 10 as a power source.

Such electrical devices include, but are not limited to, automobiles, boats, and spacecraft. The automobile can be a fuel oil automobile, a fuel gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like; spacecraft include airplanes, rockets, space planes, spacecraft, and the like. The embodiment of the utility model does not limit the electric device in particular.

In summary, in order to improve the stability of connection between the tab 300 and the battery post 110, the embodiment of the utility model provides a battery module 10 and an electric device, in which a partition board 200 is disposed on the post 110 side of the battery unit 100, a through hole 210 is formed on the partition board 200, a first boss 220 is disposed in the through hole 210, and a positioning post 221 is disposed on the first boss 220. When the tab 300 is installed, the positioning hole 312 on the tab main body 310 is in plug-in fit with the positioning column 221 on the first boss 220 to rapidly position the tab 300, the tab main body 310 is clamped in the through hole 210, the pole cover 320 is clamped with the pole 110, so that the tab 300 and the pole 110 are relatively fixed, and when a vehicle runs on a bumpy road, the tab 300 and the pole 110 are not easy to loosen, and the stability of connection of the tab 300 and the battery pole 110 is improved; in addition, in order to ensure the stability of the voltage acquisition of the battery module 10, the acquisition wire harness adapter plate 500 is supported by the second boss 240, one end, opposite to the acquisition wire harness 400, of the voltage acquisition rod 330 is simultaneously clamped in the third clamping groove 510 on the acquisition wire harness adapter plate 500 and electrically connected, and the voltage acquisition rod 330 and the acquisition wire harness 400 sequentially penetrate through the hole site on the acquisition end pressing plate 600, the hole site on the voltage acquisition rod 330 or the acquisition wire harness 400 through fasteners such as bolts and finally are matched with the hole site on the acquisition wire harness adapter plate 500, so that the voltage acquisition rod 330 and the acquisition wire harness 400 are further fixed, and the stability of the electrical connection of the voltage acquisition rod 330 and the acquisition wire harness 400 is improved.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A battery module, comprising:

the battery unit is provided with a pole;

the isolation plate is arranged on one side of the battery cell, provided with the pole, and is provided with a through hole;

the tab comprises a tab main body and a pole cover connected with the tab main body, wherein the tab main body is clamped in the through hole, and the pole cover is clamped with the pole.

2. The battery module according to claim 1, wherein a side of the pole cover facing the pole is provided with a first clamping groove, and the first clamping groove is clamped with the pole.

3. The battery module according to claim 1, wherein the tab body is provided with a welding hole, and the post is exposed from the welding hole.

4. The battery module of claim 3, wherein the welding hole is a counterbore.

5. The battery module according to claim 1, wherein a first boss is disposed in the through hole, the first boss supports the tab main body, a positioning column is disposed on the first boss, a positioning hole is formed in the tab main body, and the positioning hole is matched with the positioning column for positioning.

6. The battery module of claim 1, wherein the tab further comprises a voltage acquisition rod connected to the tab body, the battery module further comprising an acquisition harness, the voltage acquisition rod connected to the acquisition harness.

7. The battery module of claim 6, wherein the separator is provided with a second clamping groove, and the voltage acquisition rod is clamped in the second clamping groove.

8. The battery module of claim 6, further comprising an acquisition harness adapter plate, wherein a second boss is provided on the separator plate, the second boss supporting the acquisition harness adapter plate;

the collecting wire harness adapter plate is provided with a third clamping groove, and the voltage collecting rod and the collecting wire harness are clamped in the third clamping groove.

9. The battery module according to claim 1, wherein the isolation plate is provided with an avoidance hole, and the pressure relief opening of the battery cell is exposed to the avoidance hole.

10. An electrical device comprising a battery module according to any one of claims 1-9.