CN219873894U - Battery module upper cover assembly and battery module - Google Patents

Abstract

The utility model discloses a battery module upper cover assembly and a battery module, wherein the upper cover assembly comprises an upper cover, and a plurality of clamping holes are formed in the upper cover; the support plate is covered on the battery cell group, and one surface of the support plate, which is away from the battery cell group, is provided with a plurality of clamping columns corresponding to the plurality of clamping holes; the clamping column comprises a column body and a column cap arranged at the top of the column body; when the upper cover is covered on the support plate, the column cap and the column body sequentially pass through the clamping holes, and the bottom of the column cap is abutted with the top of the upper cover so as to realize the stop. Therefore, the upper cover can be quickly assembled on the support plate through the plug-in matching of the clamping holes in the upper cover and the clamping columns on the support plate, and the assembly efficiency is high. The upper cover assembly of the battery module, provided by the utility model, has the advantages that the structural integration degree is high, the automation is easy to realize, the material quantity is reduced, and the management is convenient.

Description

Battery module upper cover assembly and battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module upper cover assembly and a battery module.

Background

Along with the rapid development of new energy battery industry, the productivity is improved, the automation requirement on the assembly and manufacture of the battery module is higher and higher, and the structural design of the battery module is required to fully evaluate the automatic production on the premise of meeting the reliability. Currently, the upper cover of the battery module is usually fixed by means of rivet fastening (as shown in fig. 1); the rivet button is small in size, is not easy to realize automation, reduces production efficiency, and meanwhile, the number of material types is increased, so that the rivet button is not easy to manage.

Accordingly, there is a need to provide a battery module upper cover assembly and a battery module to solve the above problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the upper cover assembly of the battery module and the battery module, which have high structural integration degree, are easy to realize automation, reduce the quantity of materials and are convenient to manage.

The utility model adopts the technical proposal for solving the problems that:

a battery module upper cover assembly, comprising:

the upper cover is provided with a plurality of clamping holes;

the support plate is covered on the battery cell group, and one surface of the support plate, which is away from the battery cell group, is provided with a plurality of clamping columns corresponding to the clamping holes; the clamping column comprises a column body and a column cap arranged at the top of the column body;

when the upper cover is covered on the support plate, the column cap and the column body sequentially pass through the clamping holes, and the bottom of the column cap is abutted to the top of the upper cover so as to realize blocking.

Therefore, the upper cover can be quickly assembled on the support plate through the plug-in matching of the clamping holes in the upper cover and the clamping columns on the support plate, and the assembly efficiency is high. Therefore, the fixing mode is high in structural integration degree, easy to realize automation, and convenient to manage, and reduces the quantity of materials.

Further, the column body is square, the column cap is hemispherical, and the diameter of the column cap is larger than the length and the width of the column body and forms a step surface;

when the upper cover is covered on the support plate, the step surface is abutted with the top of the upper cover to realize stopping.

Further, a slot is formed in the clamping column to form two elastic clamping blocks, and when the clamping column passes through the clamping hole, the two elastic clamping blocks elastically deform towards the opposite directions.

Therefore, through forming grooves on the clamping columns to form two elastic clamping blocks, when the clamping columns are inserted into the clamping holes, the two elastic clamping blocks on the clamping columns can move towards opposite directions so that the inserting process is smoother, and the assembly efficiency is improved.

Further, the length of the clamping hole is larger than that of the cylinder, and the width of the clamping hole is the same as that of the cylinder; or the width of the clamping hole is larger than that of the column body, and the length of the clamping hole is the same as that of the column body; or the length and the width of the clamping hole are respectively larger than the length and the width of the column body.

Therefore, when the length of the clamping hole is larger than that of the column body, the excessive length of the clamping hole can be used for absorbing the assembly error of the upper cover in the length direction; similarly, when the width of the clamping hole is larger than the width of the column body, the excessive width of the clamping hole can be used for absorbing the assembly error of the upper cover in the width direction, so that the upper cover can be assembled conveniently.

Further, the clamping hole is a kidney-shaped hole and extends along the length or width direction of the upper cover.

Further, through holes are formed in the support plate and located on two sides of the bottom surface of the clamping column.

From this, the through-hole has still been seted up to the bottom surface both sides of this card post to the assembly of last module and bed die has been made things convenient for, has simplified the mould structure, has reduced the die sinking cost of mould, and then is favorable to injection moulding.

Further, the battery cell module further comprises a plurality of bus plates and a flexible circuit board, wherein the bus plates are arranged on one surface of the support plate, which is away from the battery cell group, and are connected with the battery cell group; the flexible circuit board covers a plurality of the bus plates and is connected with the bus plates.

Further, a plurality of mounting grooves corresponding to the plurality of bus plates are formed in the support plate, one side of each mounting groove is provided with a limiting protrusion, and the other side of each mounting groove is provided with an elastic clamping hook; the bus plate is arranged in the mounting groove, one side of the bus plate is clamped below the limiting protrusion, and the other side of the bus plate is clamped below the elastic clamping hook.

Further, a limiting groove is further formed in the bus plate, one side of the limiting groove is clamped below the limiting protrusion, and the other side of the limiting groove is clamped below the elastic clamping hook.

From this, through seting up the spacing groove on the busbar, this spacing groove can play the effect of quick location when the installation, and then improves the installation effectiveness of busbar.

Further, one surface of the support plate, which is away from the battery cell group, is provided with a plurality of positioning columns, a plurality of positioning holes corresponding to the positioning columns are formed in the flexible circuit board, and the positioning columns penetrate through the positioning holes.

Further, the device also comprises a plurality of mica sheets arranged at the bottom of the upper cover, and when the upper cover is covered on the support plate, the mica sheets are covered on the plurality of bus plates.

Therefore, the mica sheet is arranged at the bottom of the upper cover, when the battery core is out of control, the high-temperature and high-pressure gas mixture sprayed out through the battery core explosion-proof valve can be shielded by the mica sheet, and serious secondary damage caused by that the gas mixture ignites other parts in the battery pack is prevented.

Further, the battery cell assembly also comprises at least two temperature sensors and heat-conducting glue, wherein one surface of the support plate, which is connected with the battery cell assembly, is also provided with at least two grooves, and one surface of the support plate, which is away from the battery cell assembly, is provided with an opening communicated with the grooves; the temperature sensor is arranged in the groove, and the heat conducting glue is injected into the groove through the opening, so that the temperature sensor is fixed in the groove and the temperature of the electric core group is fixed.

In addition, the utility model also provides a battery module, which comprises a battery cell group and the upper cover assembly, wherein the battery cell group comprises a plurality of battery cells, and the upper cover assembly is covered on the battery cell group.

In summary, the battery module upper cover assembly and the battery module provided by the utility model have the following beneficial effects:

(1) According to the upper cover assembly of the battery module, the upper cover can be quickly assembled on the support plate through the insertion fit of the clamping holes in the upper cover and the clamping columns on the support plate, and the assembly efficiency is high. Therefore, the fixing mode is high in structural integration degree, easy to realize automation, and convenient to manage, and reduces the quantity of materials.

(2) According to the upper cover assembly of the battery module, the grooves are formed in the clamping columns to form the two elastic clamping blocks, and when the clamping columns are inserted into the clamping holes, the two elastic clamping blocks on the clamping columns can move towards opposite directions, so that the inserting process is smoother, and the assembly efficiency is improved.

(3) When the length of the clamping hole is larger than that of the column body, the excessive length of the upper cover assembly of the battery module can be used for absorbing the assembly error of the upper cover in the length direction; similarly, when the width of the clamping hole is larger than the width of the column body, the excessive width of the clamping hole can be used for absorbing the assembly error of the upper cover in the width direction, so that the upper cover can be assembled conveniently.

(4) According to the upper cover assembly of the battery module, the through holes are formed in the two sides of the bottom surface of the clamping column, so that the assembly of the upper module and the lower die is facilitated, the die structure is simplified, the die opening cost of the die is reduced, and the injection molding is facilitated.

(5) According to the upper cover assembly of the battery module, the limiting groove is formed in the bus plate, so that the limiting groove can achieve the effect of quick positioning during installation, and the installation efficiency of the bus plate is improved.

(6) According to the upper cover assembly of the battery module, the mica sheet is arranged at the bottom of the upper cover, when the battery core is out of control, the high-temperature and high-pressure gas mixture sprayed out through the battery core explosion-proof valve can be shielded by the mica sheet, so that the gas mixture is prevented from igniting other parts in the battery pack to cause serious secondary damage.

Drawings

Fig. 1 is a schematic view illustrating a structure of a related art battery module upper cover assembly;

fig. 2 is an exploded view of the battery module upper cover assembly according to the present utility model;

fig. 3 is a schematic view of the structure of an upper cover in the battery module upper cover assembly of the present utility model;

fig. 4 is a schematic structural view of a support plate in the upper cover assembly of the battery module according to the present utility model;

FIG. 5 is a schematic view of the bottom structure of the bracket plate of the present utility model;

FIG. 6 is a schematic structural view of a support plate according to another embodiment of the present utility model;

fig. 7 is a schematic view of the structure of a bus plate in the upper cover assembly of the battery module according to the present utility model;

fig. 8 is a schematic view of the structure of a flexible circuit board in the battery module upper cover assembly of the present utility model;

fig. 9 is a schematic structural view of a battery module upper cover assembly according to the present utility model;

fig. 10 is an exploded view of the battery module according to the present utility model;

fig. 11 is a schematic structural view of a battery module according to the present utility model.

Wherein the reference numerals have the following meanings:

1. an upper cover assembly; 11. an upper cover; 111. a clamping hole; 112. a first side plate; 113. a second side plate; 12. a support plate; 121. a clamping column; 1211. a column; 1212. a cap; 1213. slotting; 1214. an elastic clamping block; 122. a through hole; 123. a mounting groove; 1231. a limit protrusion; 1232. an elastic clamping hook; 124. positioning columns; 125. an opening; 126. a groove; 13. a bus plate; 131. a limit groove; 132. a fixing hole; 14. a flexible circuit board; 141. positioning holes; 15. mica sheets; 2. a cell group; 21. a battery cell; 3. a housing.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1

Referring to fig. 2-9, the present utility model firstly provides a battery module upper cover assembly 1, which comprises an upper cover 11 and a bracket plate 12, wherein the upper cover 11 is rectangular and is provided with a plurality of clamping holes 111; the support plate 12 is likewise rectangular and covers the battery cell group 2; the support plate 12 is provided with a plurality of clamping columns 121 corresponding to the plurality of clamping holes 111 in a protruding manner on the surface facing away from the battery cell group 2. Specifically, the clamping post 121 includes a square post 1211 and a hemispherical cap 1212 disposed on top of the post 1211, wherein the diameter of the cap 1212 is greater than the length and width of the post 1211 to form a stepped surface. In addition, the left and right ends of the upper cover 11 are provided with first side plates 112 extending downward in a vertical shape, and the front and rear ends of the upper cover 11 are provided with second side plates 113 extending downward in a vertical shape. Therefore, when the upper cover 11 is covered on the support plate 12, the two first side plates 112 in the upper cover 11 are respectively abutted against the left and right ends of the support plate 12 to realize the limit fixation of the upper cover 11 in the left and right direction, the two second side plates 113 in the upper cover 11 are respectively abutted against the front and rear ends of the support plate 12 to realize the limit fixation of the upper cover 11 in the front and rear direction, the cap 1212 and the column 1211 in the clamping column 121 in the upper cover 11 sequentially pass through the clamping hole 111, and the step surface is abutted against the top surface of the upper cover 11 to realize the stop fixation of the upper cover 11 in the up and down direction, so as to realize the complete fixation of the upper cover 11, as shown in fig. 9.

Therefore, the upper cover 11 can be quickly assembled on the support plate 12 by inserting the clamping holes 111 in the upper cover 11 into the clamping columns 121 on the support plate 12, and the assembly efficiency is high. Therefore, the fixing mode is high in structural integration degree, easy to realize automation, and convenient to manage, and reduces the quantity of materials.

Referring to fig. 3, the clamping hole 111 is a kidney-shaped hole and extends along the length direction of the upper cover 11, the length of the clamping hole 111 is greater than the length of the cylinder 1211, and the width of the clamping hole 111 is equal to the width of the cylinder 1211. Thus, by providing the catching hole 111 in a waist shape and having a length greater than that of the cylinder 1211, the excessive length thereof can be used to absorb the assembly error of the upper cover 11 in the length direction, thereby facilitating the assembly of the upper cover 11.

Of course, in other embodiments, the fastening hole 111 may be a kidney-shaped hole extending along the width direction of the upper cover 11, and the fastening hole 111 has a width larger than that of the cylinder 1211, and the excessive width thereof can be used to absorb the assembly error of the upper cover 11 in the width direction, so as to facilitate the assembly of the upper cover 11.

Of course, in other embodiments, the clamping hole 111 may be configured in other shapes so that the length and width of the clamping hole 111 are larger than the length and width of the cylinder 1211, respectively, and the extra length and width thereof can be used to absorb the assembly error of the upper cover 11 in the length and width directions, thereby further facilitating the assembly of the upper cover 11.

Referring to fig. 6, in other embodiments, the locking post 121 is further provided with a slot 1213 to form two elastic locking blocks 1214. Specifically, the slot 1213 is a through slot; when the engaging hole 111 is a kidney-shaped hole extending in the longitudinal direction of the upper cover 11 (i.e., in the left-right direction in the drawing), the slit 1213 is also extended in the left-right direction; when the engaging hole 111 is a kidney-shaped hole extending in the width direction (i.e., the front-rear direction in the drawing) of the upper cover 11, the slit 1213 is also provided extending in the front-rear direction. So arranged, when the clamping post 121 passes through the clamping hole 111, the two elastic clamping blocks 1214 can elastically deform towards opposite directions, so that the plugging and matching are smoother.

Therefore, by forming the slots 1213 on the clamping post 121 to form the two elastic clamping blocks 1214, when the clamping post 121 is inserted into the clamping hole 111, the two elastic clamping blocks 1214 on the clamping post 121 can move towards opposite directions so that the insertion process is smoother, and the assembly efficiency is further improved.

Referring to fig. 3, through holes 122 are further formed on the support plate 12 at two sides of the bottom surface of the clamping post 121. Therefore, the through hole 122 is arranged, so that the assembly of the upper die set and the lower die is facilitated, the die structure is simplified, the die opening cost of the die is reduced, and the injection molding is facilitated. If the through hole 122 is not provided, only the left mold and the right mold can be designed, and the mold structure is complex, so that the mold opening cost is greatly increased.

Referring to fig. 2, 7 and 8, the upper cover assembly 1 further includes a plurality of bus plates 13 and a flexible circuit board 14, wherein the bus plates 13 are disposed on one surface of the support plate 12 away from the battery cell group 2 and are connected with the battery cell group 2; the flexible circuit board 14 is covered on and connected to the plurality of bus plates 13. Compared with the traditional wiring mode of the wire harness, the flexible circuit board 14 is adopted, so that the layout is more regular, the structure is compact, the weight of the upper cover assembly 1 can be effectively reduced, and the energy density of the battery module is improved. In addition, the flexible circuit board 14 can be automatically welded with the bus plate 13, so that the assembly efficiency of the battery module is improved, and the labor cost is reduced.

Referring to fig. 4, the support plate 12 is provided with a plurality of mounting slots 123 corresponding to the plurality of bus plates 13, one side of the mounting slot 123 is provided with a limiting protrusion 1231, and the other side is provided with an elastic clamping hook 1232; the bus plate 13 is disposed in the mounting groove 123, one side thereof is clamped under the limiting protrusion 1231, and the other side thereof is clamped under the elastic clamping hook 1232. Specifically, the limiting protrusion 1231 is square, and the elastic hook 1232 is provided with a guiding surface, which is an inclined surface; when the bus plate 13 is mounted in the mounting groove 123, the bus plate 13 is firstly inclined, one side of the bus plate 13 is clamped below the limiting boss 1231, then the other side of the bus plate 13 is put down, the edge of the bus plate 13 is abutted against the guide surface of the elastic clamping hook 1232, and the bus plate 13 is pressed again to elastically deform the elastic clamping hook 1232 until the other side of the bus plate 13 also enters the mounting groove 123 and is clamped below the elastic clamping hook 1232, so that the assembly of the bus plate 13 can be completed. Therefore, the mounting groove 123, the limiting protrusion 1231 and the elastic hook 1232 together have a preliminary fixing effect on the bus plate 13, and before the bus plate 13 and the battery cell group 2 are welded, the bus plate 13 can be positioned at a correct position and wait for welding.

Further, the bus plate 13 is further provided with a limiting groove 131, one side of the limiting groove 131 is clamped under the limiting protrusion 1231, and the other side of the limiting groove is clamped under the elastic clamping hook 1232. This spacing groove 131 can provide the guide effect for the correct installation of busbar board 13, when beginning installation busbar board 13, directly places one side of spacing groove 131 in the below of spacing protruding 1231, then makes the opposite side of spacing groove 131 gradually be close to elasticity pothook 1232, can play quick location's effect, improves the installation effectiveness of busbar board 13. Preferably, the limiting groove 131 is punched, the bus plate 13 forms a curved arch structure at the limiting groove 131, so that the bus plate 13 has a certain deformation capability, the cells 21 in the cell group 2 undergo a certain degree of expansion after being circularly discharged, and the bus plate 13 can resist a certain degree of expansion through deformation, thereby reducing the probability of cracking of the bus plate 13.

In addition, the bus plate 13 is further provided with a plurality of fixing holes 132, and the bus plate 13 is welded with the terminals of the battery cells 21 in the battery cell group 2 through the fixing holes 132.

Referring to fig. 3, a plurality of positioning posts 124 are disposed on a surface of the support plate 12 facing away from the battery cell group 2, a plurality of positioning holes 141 corresponding to the positioning posts 124 are formed on the flexible circuit board 14, and the positioning posts 124 pass through the positioning holes 141. Since the flexible circuit board 14 needs to be connected with all the bus plates 13, the flexible circuit board 14 is large in size and high in positioning accuracy. By providing the positioning posts 124, the flexible circuit board 14 can be quickly mounted in place, thereby improving the assembly efficiency of the battery module.

Referring to fig. 2, the upper cover assembly 1 further comprises two mica sheets 15 disposed at the bottom of the upper cover 11, preferably, the mica sheets 15 are fixed at the bottom of the upper cover 11 by gluing; when the upper cover 11 is covered on the support plate 12, the mica sheet 15 is covered on the plurality of bus plates 13. Therefore, when the battery cell 21 is out of control, the high-temperature and high-pressure gas mixture sprayed out through the explosion-proof valve of the battery cell 21 can be shielded by the mica sheet 15, so that the gas mixture is prevented from igniting other parts in the battery pack to cause serious secondary damage.

Referring to fig. 4-5, two grooves 126 are further formed on the surface of the support plate 12 connected to the battery cell group 2, an opening 125 communicating with the grooves 126 is formed on the surface of the support plate 12 facing away from the battery cell group 2, a temperature sensor (not shown in the drawings) is disposed in the grooves 126, and heat-conducting glue can be injected into the grooves 126 through the openings 125, so that the temperature sensor is fixed in the grooves 126 and the temperature of the battery cell 21 is collected.

Specifically, the size of the opening 125 may be set larger so that the temperature sensor may be directly inserted into the groove 126 through the opening 125. Of course, the size of the opening 125 may be smaller than the size of the temperature sensor, which may be mounted from the side of the holder plate 12 near the battery cell 21. When the support plate 12 is covered on the battery cell group 2, the bottom surface of the support plate 12 is in contact with the upper surface of the battery cell group 2, so that the upper surface of the battery cell group 2 has a sealing effect on the groove 126, and only the other surface of the support plate 12 is provided with the opening 125 communicated with the groove 126, at the moment, the heat conducting glue is injected into the groove 126 through the opening 125, and gradually fills the groove 126, finally overflows from the opening 125 on the support plate 12, which means that the heat conducting glue is filled in the groove 126, the temperature sensor can be firmly fixed in the groove 126, the temperature of the battery cell 21 is transferred to the temperature sensor through the heat conducting glue, and the current temperature of the battery cell 21 can be reliably collected because the temperature sensor does not shake or fall off.

Further, at least two temperature sensors are provided, at least one is used for collecting the battery cell 21 with the highest temperature, at least another is used for collecting the battery cell 21 with the lower temperature, and the more the number of the temperature sensors is, the more the current temperature condition of the battery module can be accurately reflected. Typically, the temperature of the cells 21 located in the middle of the cell stack 2 is the highest, and the temperature of the cells 21 located at the ends of the cell stack 2 is the lowest. Therefore, the temperature sensor needs to collect the temperatures of the cell 21 located at the middle and the cell 21 located at the end, and the corresponding opening position of the groove 126 is the middle of the support plate 12 and one end of the support plate 12 in the length direction.

Example two

Referring to fig. 10-11, in addition, the present utility model further provides a battery module, which includes a battery cell group 2 and the upper cover assembly 1 in the first embodiment, where the battery cell group 2 includes a plurality of battery cells 21, and the plurality of battery cells 21 are arranged in parallel and spaced along the length direction (i.e. the left-right direction) of the upper cover 11, and the upper cover assembly 1 is covered on the battery cell group 2. Specifically, the battery module further comprises a casing 3, a cavity for accommodating the battery cell group 2 is formed in the casing 3, and the upper cover assembly 1 is covered above the casing 3, so that the cavity has a good insulating and sealing effect.

In summary, the battery module upper cover assembly 1 and the battery module provided by the utility model have the following beneficial effects:

the upper cover assembly 1 of the battery module can realize rapid assembly of the upper cover 11 on the support plate 12 through the plug-in matching of the clamping holes 111 in the upper cover 11 and the clamping columns 121 on the support plate 12, and has high assembly efficiency. Therefore, the fixing mode is high in structural integration degree, easy to realize automation, and convenient to manage, and reduces the quantity of materials.

And (II) in the upper cover assembly 1 of the battery module, the slots 1213 are formed on the clamping columns 121 to form two elastic clamping blocks 1214, when the clamping columns 121 are inserted into the clamping holes 111, the two elastic clamping blocks 1214 on the clamping columns 121 can move towards opposite directions so as to enable the insertion process to be smoother, and further improve the assembly efficiency.

(III) the battery module upper cover assembly 1 of the present utility model, when the length of the card hole 111 is greater than the length of the cylinder 1211, the excessive length thereof can be used to absorb the assembly error of the upper cover 11 in the length direction; similarly, when the width of the clip hole 111 is larger than the width of the cylinder 1211, the excessive width thereof can be used to absorb the assembly error of the upper cover 11 in the width direction, thereby facilitating the assembly of the upper cover 11.

And (IV) in the upper cover assembly 1 of the battery module, through holes 122 are formed on two sides of the bottom surface of the clamping column 121, so that the upper module and the lower die are matched conveniently, the die structure is simplified, the die opening cost of the die is reduced, and the injection molding is facilitated.

And fifthly, in the upper cover assembly 1 of the battery module, the limiting groove 131 is formed in the bus plate 13, so that the limiting groove 131 can achieve the effect of rapid positioning during installation, and the installation efficiency of the bus plate 13 is improved.

(six) according to the upper cover assembly 1 of the battery module, the mica sheet 15 is arranged at the bottom of the upper cover 11, so that when the battery core 21 is out of control, the high-temperature and high-pressure gas mixture sprayed out through the explosion-proof valve of the battery core 21 can be shielded by the mica sheet 15, and serious secondary damage caused by the fact that the gas mixture ignites other parts in the battery pack is prevented.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that the terms "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, in the description of the present utility model, the meaning of "a plurality", "a number" is two or more, unless explicitly defined otherwise.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (13)

1. A battery module upper cover assembly (1), characterized by comprising:

an upper cover (11) provided with a plurality of clamping holes (111);

the support plate (12) is covered on the battery cell group (2), and one surface of the support plate, which is away from the battery cell group (2), is provided with a plurality of clamping columns (121) corresponding to the clamping holes (111); the clamping column (121) comprises a column body (1211) and a column cap (1212) arranged at the top of the column body (1211);

when the upper cover (11) is covered on the support plate (12), the column cap (1212) and the column body (1211) sequentially pass through the clamping hole (111), and the bottom of the column cap (1212) is abutted against the top of the upper cover (11) to realize blocking.

2. The cap assembly (1) of claim 1, wherein the post (1211) is square and the cap (1212) is hemispherical, the cap (1212) having a diameter greater than the length and width of the post (1211) and forming a stepped surface;

when the upper cover (11) is covered on the support plate (12), the step surface is abutted with the top of the upper cover (11) to realize the stop.

3. The upper cover assembly (1) according to claim 1 or 2, wherein the clamping column (121) is provided with a slot (1213) to form two elastic clamping blocks (1214), and when the clamping column (121) passes through the clamping hole (111), the two elastic clamping blocks (1214) elastically deform towards opposite directions.

4. The cover assembly (1) according to claim 1 or 2, wherein the length of the clamping hole (111) is greater than the length of the cylinder (1211), the width of the clamping hole (111) being the same as the width of the cylinder (1211); alternatively, the width of the clamping hole (111) is larger than the width of the cylinder (1211), and the length of the clamping hole (111) is the same as the width of the cylinder (1211); alternatively, the length and width of the clamping hole (111) are respectively greater than the length and width of the column (1211).

5. The upper cover assembly (1) according to claim 4, wherein the clamping hole (111) is a kidney-shaped hole and extends along the length or width direction of the upper cover (11).

6. The upper cover assembly (1) according to claim 1 or 2, wherein through holes (122) are further formed in the support plate (12) at two sides of the bottom surface of the clamping column (121).

7. Upper cover assembly (1) according to claim 1 or 2, further comprising a number of bus plates (13) and a flexible circuit board (14), wherein a number of the bus plates (13) are arranged on a side of the support plate (12) facing away from the cell group (2) and connected with the cell group (2); the flexible circuit board (14) is covered on the plurality of bus plates (13) and is connected with the plurality of bus plates (13) in a homogeneous mode.

8. The upper cover assembly (1) according to claim 7, wherein a plurality of mounting grooves (123) corresponding to a plurality of the bus plates (13) are formed in the support plate (12), one side of each mounting groove (123) is provided with a limiting protrusion (1231), and the other side of each mounting groove is provided with an elastic clamping hook (1232); the bus plate (13) is arranged in the mounting groove (123), one side of the bus plate is clamped below the limiting protrusion (1231), and the other side of the bus plate is clamped below the elastic clamping hook (1232).

9. The upper cover assembly (1) according to claim 8, wherein the bus plate (13) is further provided with a limiting groove (131), one side of the limiting groove (131) is clamped below the limiting protrusion (1231), and the other side of the limiting groove is clamped below the elastic clamping hook (1232).

10. The upper cover assembly (1) according to claim 7, wherein a plurality of positioning columns (124) are arranged on one surface of the support plate (12) facing away from the battery cell group (2), a plurality of positioning holes (141) corresponding to the positioning columns (124) are formed in the flexible circuit board (14), and the positioning columns (124) penetrate through the positioning holes (141).

11. The upper cover assembly (1) according to claim 7, further comprising a plurality of mica sheets (15) arranged at the bottom of the upper cover (11), wherein the mica sheets (15) cover a plurality of the bus plates (13) when the upper cover (11) is covered on the support plate (12).

12. The upper cover assembly (1) according to claim 7, further comprising at least two temperature sensors and heat conducting glue, wherein one surface of the support plate (12) connected with the battery cell group (2) is further provided with at least two grooves (126), and one surface of the support plate (12) facing away from the battery cell group (2) is provided with an opening (125) communicated with the grooves (126); the temperature sensor is arranged in the groove (126), and the heat-conducting glue is injected into the groove (126) through the opening (125), so that the temperature sensor is fixed in the groove (126) and the temperature of the current core group (2) is fixed.

13. A battery module, characterized by comprising a battery cell group (2) and an upper cover assembly (1) according to any one of claims 1-12, wherein the battery cell group (2) comprises a plurality of battery cells (21), and the upper cover assembly (1) is covered on the battery cell group (2).