CN220138624U - Busbar support and battery - Google Patents

Abstract

The utility model discloses a busbar bracket and a battery, and relates to the field of batteries. In a second aspect, the battery includes the above-described buss bar support and buss bars. Through seting up the isolation groove between two adjacent regions that are used for installing the busbar to increased the creepage distance between two adjacent busbars, and the isolation groove also can increase the structural strength of body, has solved the problem that causes the short circuit owing to the distance is nearer between busbar and the busbar.

Description

Busbar support and battery

Technical Field

The utility model relates to the field of batteries, in particular to a busbar bracket and a battery.

Background

The battery typically includes a cell, a buss bar, a sampling assembly, and the like. The battery comprises at least one battery cell group, the battery cell is connected with the battery cell by a bus to realize current carrying transmission, and the voltage of the battery cell and the temperature information of the battery cell in the battery are transmitted to a BMS (battery management system) by means of a sampling component.

However, as the space utilization requirement of the battery is higher and higher, the adjacent bus bars are closer due to space limitation, and short circuit accidents are easy to occur. On the other hand, for battery modules with different series-parallel numbers of battery cells, each battery module needs to develop an independent bus bar bracket, the universality of parts is poor, and the process is complex when the module information acquisition assembly is connected with the bus bars and the battery modules, so that the production beat is low.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a bus bar bracket and a battery so as to solve the problem of short circuit caused by a short distance between bus bars in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

one aspect of the present utility model provides a bus bar bracket including: the battery cell structure comprises a body, wherein a plurality of mounting holes used for avoiding battery cell polar columns and arranged at intervals are formed in the body, isolation grooves are formed in the body between two adjacent areas used for mounting the bus bars along the arrangement direction of the battery cells, and the isolation grooves are used for increasing the creepage distance between the two adjacent bus bars.

Further, the isolation groove is formed in one side of the body, where the bus bar is installed.

Further, the isolation groove protrudes out of the body, and the groove depth of the isolation groove is smaller than the height of the battery core pole.

Further, the isolation groove is in a strip shape, and the length of the isolation groove is longer than that of the bus bar along the length direction of the isolation groove.

Further, the isolation grooves are respectively formed between two adjacent mounting holes.

Further, a containing groove is formed in one side, used for installing the busbar, of the body along the arrangement direction of the electric cores, and a guide groove extending towards the direction close to the installation hole is formed in one side, close to the installation hole, of the containing groove.

Further, a fixing protrusion is further arranged on the body and used for being connected with the busbar rivet.

Further, the body is also provided with a fixing hole for the fixing piece to pass through.

Further, the body is further provided with at least one boss, and the boss is provided with an avoidance hole for avoiding the explosion-proof valve.

Another aspect of the present utility model provides a bus bar support, including the bus bar support, a bus bar, and at least one battery cell group, where the battery cell group includes a plurality of battery cells that are sequentially arranged.

Compared with the prior art, the utility model has the advantages that: through seting up the isolation groove between two adjacent regions that are used for installing the busbar to increased the creepage distance between two adjacent busbars, and the isolation groove also can increase the structural strength of body, has solved the problem that causes the short circuit owing to the distance is nearer between busbar and the busbar.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other 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 bus bar bracket according to the present utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of a battery according to the present utility model;

fig. 4 is a schematic view of a busbar holder, a busbar and a cell according to the present utility model.

In the figure: 1. a body; 11. a mounting hole; 12. an isolation groove; 13. a fixing protrusion; 14. a receiving groove; 15. a guide groove; 16. a fixing hole; 17. a boss; 171. avoidance holes; 2. a busbar; 3. a sampling assembly; 4. and a fixing piece.

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. 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.

Embodiments of a bus bar bracket and a battery according to the present utility model are described in further detail below with reference to the accompanying drawings.

In a first aspect, as shown in fig. 1, the present utility model provides a busbar support, including a body 1, where a plurality of mounting holes 11 for avoiding electric core poles are formed on the body 1 and are arranged at intervals, and an isolation slot 12 is formed between two adjacent areas for mounting busbars 2, so as to increase a creepage distance between two adjacent busbars 2.

In the present utility model, the number of the mounting holes 11 is not limited, and may be set according to the actual situation. The number of mounting holes 11 may be increased or decreased in consideration of the variation in the number of the battery cells.

It can be understood that a plurality of electric core arrange in proper order and form electric core group, include at least one electric core group in the battery, connect in order to realize the current-carrying transmission through the busbar between electric core and the electric core, the busbar support then is used for setting up at the top of all electric cores, bears the busbar, improves the space utilization of battery through the busbar support.

Because the battery cells are connected through the bus bars, and safety accidents such as short circuit are easy to cause due to the fact that the distance between two adjacent bus bars is relatively close, in the example, the isolation groove 12 is formed between two adjacent mounting holes 11 for mounting the bus bars 2, the two adjacent bus bars 2 are isolated through the isolation groove 12, the creepage distance between the adjacent bus bars 2 is increased, and the insulation and voltage resistance performance of the battery is improved.

As shown in fig. 1, the arrangement direction of the plurality of cells is the longitudinal direction of the battery, i.e., the left-right direction in the drawing, and the width direction of the battery is perpendicular to the arrangement direction of the cells, i.e., the up-down direction in the drawing. The length and width directions of the body 1 are respectively consistent with the length and width directions of the battery.

In this example, a plurality of mounting hole groups are formed in the body 1 along the width direction of the body 1 at intervals, each mounting hole group comprises a plurality of mounting holes 11 formed in the body 1 along the length direction at intervals, and each mounting hole 11 corresponds to the electrode position of the battery cell and is adaptive in size. Specifically, referring to fig. 1, two sets of mounting hole groups are formed on the body 1, each set of mounting hole groups may extend along the length direction of the body 1, and each set of mounting holes corresponds to a terminal on one side of the battery cell in the width direction of the battery.

In some alternative embodiments, as shown in fig. 2, the isolation groove 12 is formed on the side of the body 1 for installing the busbar 2, that is, the notch of the isolation groove 12 is located on the side of the body 1 for installing the busbar 2, and the groove bottom extends in a direction approaching to the cell. Further, the isolation groove 12 protrudes out of the main body 1, and the groove depth of the isolation groove 12 is smaller than the height of the cell terminal.

It can be appreciated that the isolation groove 12 can be formed on one side of the body 1 for installing the busbar 2, or on one side of the body 1 close to the battery cell, so as to increase the creepage distance of the busbar between two adjacent battery cell poles. However, since the isolation groove 12 is formed on the side of the body 1 close to the battery cell and protrudes out of the body 1, it is preferable that the isolation groove 12 is formed on the side of the body 1 for mounting the bus bar 2 in this example, since it interferes with other structures of the battery. Meanwhile, in order to enable the battery cell pole to pass through the mounting hole 11 and the busbar 2, the groove depth of the isolation groove 12 protruding out of the body 1 should be smaller than the height of the battery cell pole.

In some alternative embodiments, the isolation groove 12 has a strip shape, and the length of the isolation groove 12 is greater than the length of the busbar 2 along the length direction of the isolation groove 12, wherein the length direction of the isolation groove 12 is the same as the width direction of the body 1.

In this example, the length of the isolation groove 12 in the width direction of the body 1 is longer than the length of the bus bar 2 in the width direction of the body 1. It will be appreciated that for better isolation of adjacent two of the bus bars 2, the length of the isolation groove 12 is set to be greater than the length of the bus bar 2 along the length of the isolation groove 12.

In some alternative embodiments, the isolation groove 12 is formed between two adjacent mounting holes 11.

In order to quickly realize the mounting of the busbar holder and the battery when adapting to different batteries, the isolation groove 12 is provided between two adjacent mounting holes 11, so that two adjacent mounting holes 11 with the isolation groove 12 do not need to be respectively configured to two different cell electrodes, and the two adjacent mounting holes 11 are used for configuring two different busbars 2. Therefore, the mounting beat of the production line can be improved, the universality of the busbar bracket is further improved, the universal development of the busbar bracket is realized, the universality of parts is improved, the manpower and material resource investment in the development process is saved, and the die cost is saved.

In some alternative embodiments, a receiving groove 14 is formed in the body 1 at a side for mounting the bus bar 2 along the cell arrangement direction, and a guide groove 15 extending in a direction approaching the mounting hole 11 is formed at a side of the receiving groove 14 near the mounting hole 11.

It will be appreciated that the accommodating groove 14 is used for accommodating the main conductive wire of the sampling assembly 3 for placement and passing, and the guiding groove 15 is used for guiding the branches of the sampling assembly 3 through the guiding groove 15 to be connected with the corresponding bus bars, so that the collection of the core information is facilitated, and the core information is transmitted to the BMS through the sampling assembly 3.

Each row of mounting hole sets is provided with one of the above-described receiving grooves 14, the receiving grooves 14 being located on the same side of all mounting holes in a set of mounting hole sets. In this example, the accommodating groove 14 is opened between two rows of mounting holes 11, and two ends of the accommodating groove 14 along the length direction of the body 1 respectively correspond to two mounting holes 11 located at the outermost side in the length direction of the body 1. The number of the guide grooves 15 is the same as that of the mounting holes 11, and the positions thereof correspond to each other, and one end of the guide groove 15 communicates with the accommodating groove 14 and the other end extends in a direction approaching the mounting holes 11.

Preferably, two adjacent accommodating grooves 14 are communicated to adapt to different sampling requirements, so that the universality of the busbar bracket is improved, and the dead weight of the busbar bracket is reduced.

The accommodating groove 14 and the guide groove 15 are provided, the sampling assembly 3 can be installed on the body 1 of the busbar bracket to form a whole, and then the whole is directly installed on a battery, so that the production takt of a production line is improved.

In some alternative embodiments, a fixing protrusion 13 is further provided on the body 1 for hot riveting with the busbar 2.

During installation, the fixing protrusion 13 and the busbar 2 are combined together through hot riveting, and the fixing protrusion 13 not only can play a role in fixing the busbar 2, but also has a positioning effect.

In some alternative embodiments, the body 1 is further provided with a fixing hole 16 for the fixing member 4 to pass through.

It will be appreciated that the fixing holes 16 are matched with the fixing members 4, the fixing members 4 are arranged on the battery cells, and the fixing members 4 penetrate through the fixing holes 16 to connect and fix the busbar bracket and the battery cells together. In this example, the fixing member 4 is an annular member, and the main conducting wire of the sampling assembly 3 passes through the fixing member 4 and is placed in the accommodating groove 14, so that the fixing member 4 can fix the relative position of the employing assembly 3 at the same time.

Alternatively, the fixing hole 16 may be a circular hole, a square hole, or the like.

The relative position between the busbar bracket and the battery core can be further fixed by the arrangement, and the structural stability of the battery is improved.

In some alternative embodiments, at least one boss 17 is further provided on the body 1, and a relief hole 171 for relieving the explosion-proof valve is provided on the boss 17.

It will be appreciated that the boss 17 protrudes in the thickness direction of the body 1, i.e. the height direction of the cell, the boss 17 being located directly above the explosion-proof valve. The bosses 17 are disposed along the length direction of the body 1, and the number of the bosses is the same as that of the battery cells. The avoidance holes 171 are used for preventing the explosion-proof valve from being unable to be opened when the module is in thermal runaway, so that more serious safety accidents are caused, and each avoidance hole 171 can prevent the ejecta of the explosion-proof valve of the thermal runaway battery cell from splashing to the corresponding battery cell, so that the structure is simple, and the safety performance is high. The opening positions of the avoidance holes 171 are in one-to-one correspondence with the positions of the explosion-proof valves and are adaptive in size.

In this example, the boss 17 is rectangular, and the avoiding hole 171 is a oblong hole. In other embodiments, the outer contours of the boss 17 and the avoidance hole 171 may be circular, elliptical, oblong or polygonal, and the shape of the outer contour of the avoidance hole 171 may be selected to be a shape suitable for the shape of the outlet surface of the explosion-proof valve, thereby widening the application range of the body 1, improving the practicality of the busbar bracket, and being economical and practical.

Alternatively, the body 1 may be made of a PC (Polycarbonate) material, and formed by thermoplastic molding, so as to form the mounting hole 11, the isolation groove 12, the receiving groove 14, the guide groove 15, the fixing protrusion 13, the fixing hole 16, the boss 17, and the avoiding hole 171 on the boss, which is simple in processing, and greatly shortens the mold opening period and reduces the mold opening cost.

In a second aspect, as shown in fig. 3, the present utility model further provides a battery, including the above-mentioned bus bar bracket, the bus bar 2, and at least one cell group, where the cell group includes a plurality of cells arranged in sequence. In particular, the battery of the present utility model may be a battery module in which the battery cell assembly is fixed by the end plate and the side plate, or the end plate and the strap, or may be a battery pack in which the battery cell assembly is directly placed in the case, or the like, and is not limited thereto.

It will be appreciated that, as shown in fig. 4, with the above-described bus bar bracket, the bus bar 2 and the sampling assembly 3 can be mounted on the body 1 of the bus bar bracket to form a whole and then directly mounted on the battery, thereby improving the tact of the production line.

According to the busbar bracket and the battery, the isolation groove 12 is formed between the two adjacent mounting holes 11 for mounting the busbars 2, the two adjacent busbars 2 are isolated through the isolation groove 12, the creepage distance between the two adjacent busbars 2 is increased, and the insulation and voltage resistance performance of the battery is improved; in order to increase the creepage distance between the adjacent bus bars 2, the isolation groove 12 protrudes out of the body 1 in the height direction of the battery core, and in order to better isolate the adjacent two bus bars 2, the length of the isolation groove 12 is set to be larger than the length of the bus bars 2 along the length direction of the isolation groove 12, so that the insulation and voltage resistance performance of the battery is further improved; the universality of the busbar mounting bracket is improved by arranging the isolation grooves 12 between two adjacent mounting holes 11; by providing the receiving groove 14 and the guide groove 15, the sampling assembly 3 can be mounted on the body 1 of the busbar bracket to form a whole and then directly mounted on the battery, thereby improving the production takt of the production line; the fixing holes 16 for the fixing pieces 4 to pass through are formed, so that the relative positions between the busbar bracket and the battery core can be further fixed, and the structural stability of the battery is improved; the boss 17 and the avoidance hole 171 can prevent the blowout of the explosion-proof valve of the thermal runaway cell from splashing onto the corresponding cell, and the structure is simple and the safety performance is high.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A bus bar bracket, comprising:

the battery cell electrode post structure comprises a body (1), wherein a plurality of mounting holes (11) used for avoiding the battery cell electrode post and arranged at intervals are formed in the body (1), isolation grooves (12) are formed between two adjacent areas used for mounting the bus bars (2) along the arrangement direction of the battery cells on the body (1), and the isolation grooves (12) are used for increasing the creepage distance between the two adjacent bus bars (2).

2. The busbar holder according to claim 1, wherein the isolation groove (12) is opened at one side of the body (1) for mounting the busbar (2).

3. The busbar holder according to claim 2, wherein the isolation groove (12) protrudes from the body (1), and a groove depth of the isolation groove (12) is smaller than a height of the cell post.

4. The bus bar bracket according to claim 1, wherein the isolation groove (12) has a long strip shape, and the length of the isolation groove (12) is longer than the length of the bus bar (2) along the length direction of the isolation groove (12).

5. The busbar bracket as set forth in claim 1, wherein the isolation groove (12) is provided between two adjacent mounting holes (11).

6. The busbar holder according to claim 1, wherein a receiving groove (14) is provided in the body (1) on a side for mounting the busbar (2) in the cell arrangement direction, and a guide groove (15) extending in a direction approaching the mounting hole (11) is provided on a side of the receiving groove (14) approaching the mounting hole (11).

7. The busbar holder according to claim 1, characterized in that a fixing projection (13) is also provided on the body (1) for a hot-riveted connection with the busbar (2).

8. The busbar holder according to claim 1, characterized in that a fixing hole (16) for passing the fixing element (4) is further provided on the body (1).

9. The busbar bracket as set forth in claim 1, wherein the body (1) is further provided with at least one boss (17), and the boss (17) is provided with a avoidance hole (171) for avoiding the explosion-proof valve.

10. A battery comprising a busbar holder according to any one of claims 1 to 9, a busbar (2) and at least one cell stack, said cell stack comprising a plurality of cells arranged in sequence.