CN219350598U - Battery cell assembly, battery assembly and electronic device - Google Patents

Abstract

The utility model discloses a battery cell assembly, a battery assembly and an electronic device, wherein the battery cell assembly comprises: the battery cell comprises a battery cell piece, wherein a battery cell rivet and a liquid injection hole are formed in the side edge of the battery cell piece, the liquid injection hole and the battery cell rivet are arranged at intervals, and the battery cell rivet has a first polarity; the liquid injection sealing piece is arranged on one side of the electric core piece and seals the liquid injection hole, and the liquid injection sealing piece is a conductive piece and has a second polarity. Thus, by providing a cell rivet and a fluid seal in the cell assembly, the cell rivet has a first polarity, the fluid seal seals the fluid orifice, and has a second polarity. Therefore, the cell rivet and the liquid filling sealing piece can play a structural role in the cell assembly, and polarity leading-out of the cell assembly can be realized. Furthermore, the number of parts of the battery cell assembly is reduced, and the assembly procedure of the battery cell assembly is simplified.

Description

Battery cell assembly, battery assembly and electronic device

Technical Field

The present utility model relates to the field of battery technologies, and in particular, to a battery cell assembly, a battery assembly, and an electronic device.

Background

Along with development of information technology, people demand higher and higher mobile terminal's live time, in order to improve mobile terminal's live time, extension battery's cycle life, mobile phone, notebook, dull and stereotyped etc. equipment on the market adopts lithium ion battery mostly, because the physical chemistry characteristic of lithium ion battery self can't overcharge and put excessively, need increase protection circuit in the battery for prevent that the battery from overcharging and putting excessively.

In the prior art, the welding is provided with positive pole post and negative pole post on the electric core, and positive pole post and negative pole post are connected with the electricity of circuit board respectively to realize the assembly of electric core and circuit board, still need the position welding of annotating the liquid hole alone on the electric core set up annotate the liquid sealing member, make annotate the liquid sealing member with annotating the liquid hole on the electric core sealed, annotate the liquid sealing member and can only play sealed effect of annotating the liquid hole, part quantity on the electric core is many, and the assembly flow is complicated.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a battery cell assembly which can reduce the production cost.

The utility model further provides a battery assembly.

The utility model further provides an electronic device.

According to an embodiment of the utility model, a cell assembly includes: the battery cell comprises a battery cell piece, wherein a battery cell rivet and a liquid injection hole are formed in one side of the battery cell piece, the liquid injection hole and the battery cell rivet are arranged at intervals, and the battery cell rivet has a first polarity; the liquid injection sealing piece is arranged on one side of the electric core piece and seals the liquid injection hole, and the liquid injection sealing piece is a conductive piece and has a second polarity.

Thus, by providing a cell rivet and a fluid seal in the cell assembly, the cell rivet has a first polarity, the fluid seal seals the fluid orifice, and has a second polarity. Therefore, the cell rivet and the liquid filling sealing piece can play a structural role in the cell assembly, and polarity leading-out of the cell assembly can be realized. Furthermore, the number of parts of the battery cell assembly is reduced, and the assembly flow of the battery cell assembly is simplified.

According to some embodiments of the utility model, the liquid injection sealing member comprises a sealing sheet and a connecting sheet, wherein the sealing sheet is arranged on one side of the electric core member, the sealing member seals the liquid injection hole and is electrically connected with the electric core member, and the connecting sheet is electrically connected with the sealing sheet.

According to some embodiments of the utility model, the sealing piece is welded and fixed with the periphery of the liquid injection hole.

According to some embodiments of the utility model, the cell comprises: and the sealing piece is flush with the surface of one side of the cell piece, which is provided with the positioning groove.

According to some embodiments of the utility model, the sealing piece is provided with an explosion-proof indentation, the center of the explosion-proof indentation corresponds to the liquid injection hole, and the explosion-proof indentation extends to the periphery along the radial direction of the liquid injection hole.

According to some embodiments of the utility model, the electric core piece comprises an electric core main body, a shell and a cover body, wherein the electric core main body is arranged in the shell, one side of the shell is opened, the cover body is arranged on one opened side of the shell, a first avoiding opening and a second avoiding opening are formed in the cover body, the first avoiding opening is used for avoiding the electric core rivet, and the second avoiding opening is used for avoiding the liquid injection sealing piece.

According to some embodiments of the utility model, an insulating sealing ring is sleeved on the periphery of the cell rivet, and the insulating sealing ring is located between the cell rivet and the inner wall of the first avoidance port.

The battery assembly according to the present utility model includes: a circuit board; according to the battery cell assembly, the battery cell rivet and the liquid injection sealing piece are electrically connected with the circuit board.

According to some embodiments of the utility model, the circuit board is provided with a connecting hole, and the liquid injection sealing piece penetrates through the connecting hole and is electrically connected with the circuit board.

According to some embodiments of the utility model, the connecting piece is inserted and fixed with the connecting hole and is in contact electrical connection with the side wall of the connecting hole.

According to some embodiments of the utility model, the connecting piece extends into the connecting hole, and the connecting piece is welded with the side wall of the connecting hole or is adhered by conductive glue; or the connecting sheet penetrates through the connecting hole and is welded or bonded with the surface of one side, far away from the battery cell, of the circuit board through conductive glue.

According to some embodiments of the utility model, the circuit board comprises: the circuit board comprises an insulating part and a circuit board main body, wherein an avoidance hole is formed in the insulating part, the connection hole is formed in the circuit board main body, the avoidance hole corresponds to the connection hole, and the insulating part is nested on the surface of the circuit board main body and wraps the circuit board main body.

According to some embodiments of the utility model, a connecting belt is arranged on the circuit board and is electrically connected with the cell rivet, one side of the cell assembly is provided with insulating adhesive paper, a third avoiding opening and a fourth avoiding opening are arranged on the insulating adhesive paper, the third avoiding opening is used for avoiding the cell rivet, the fourth avoiding opening is used for avoiding the liquid injection sealing element, and the insulating adhesive paper is positioned between the connecting belt and the cell element.

An electronic device according to an embodiment of the present utility model includes: the battery assembly described above.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is an exploded view of a battery assembly according to an embodiment of the present utility model;

fig. 2 is a partial exploded view of a battery assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a liquid injection seal according to an embodiment of the utility model;

fig. 4 is a partial schematic view of a battery assembly according to an embodiment of the present utility model.

Reference numerals:

1000. a battery assembly;

100. a cell assembly;

10. a housing; 11. a cell rivet; 111. an insulating seal ring; 12. a liquid injection hole; 13. a positioning groove; 14. a cover body; 141. a first avoidance port; 142. a second avoidance port; 15. insulating gummed paper; 151. a third avoidance port; 152. a fourth avoidance port; 16. a cell element;

20. a circuit board; 21. a connection hole; 22. a circuit board main body; 23. an insulating member; 231. avoidance holes; 24. a connecting belt;

30. a liquid injection seal; 31. a sealing sheet; 311. explosion-proof indentation; 32. a connecting sheet;

40. and (5) insulating labels.

Detailed Description

Embodiments of the present utility model will be described in detail below, by way of example with reference to the accompanying drawings.

The following describes a battery cell assembly 100 according to an embodiment of the present utility model with reference to fig. 1 to 4, and the battery cell assembly 100 may be applied to a battery assembly 1000, which may be applied to an electronic device.

As shown in connection with fig. 1-4, a cell assembly 100 according to the present utility model may generally include: the battery cell 16 and the liquid injection sealing member 30, wherein the battery cell 16 is mainly composed of a positive electrode material, a negative electrode material, electrolyte, a diaphragm and a shell, the battery cell 16 is matched with a protection circuit to form a battery together, electric energy can be stored and released, a battery cell rivet 11 and a liquid injection hole 12 are arranged on one side of the battery cell 16, a circuit board 20 is an important electronic component in the battery cell assembly 100, and is a carrier for the battery cell assembly 100 and electric connection, the circuit board 20 is arranged to protect the battery cell assembly 100 from overcharging, overdischarging, short-circuiting and overcurrent, the product quality and the working safety of the battery cell assembly 100 can be ensured, the production efficiency of the battery cell assembly 100 can be improved, the cost is reduced, the maintenance is convenient, the liquid injection hole 12 of the battery cell assembly 100 needs to be sealed after the liquid injection procedure is completed, and the liquid injection sealing member 30 can play a role in sealing the liquid injection hole 12, so that the structural stability and the functional reliability of the battery cell assembly 100 can be ensured. In an embodiment of the present utility model, the cell 16 is a hard-shell cell 16, and the shape of the hard-shell cell 16 includes, but is not limited to, square or cylindrical.

Further, a cell rivet 11 and a liquid injection hole 12 are arranged on one side of the cell member 16, the liquid injection hole 12 is arranged at a distance from the cell rivet 11, and the cell rivet 11 has a first polarity. Specifically, one side of the electric core piece 16 is provided with an electric core rivet 11 and a liquid injection hole 12, the electric core rivet 11 is a pole in the electric core assembly 100 and has a first polarity, the electric core piece can play a role in leading out and extending an electrode of the electric core assembly 100, the electric core piece can be used for connecting the electric core assembly 100 and the electric core piece, the liquid injection hole 12 can be used for conveniently filling electrolyte into the electric core piece 16, the liquid injection hole 12 and the electric core rivet 11 are arranged at intervals, and therefore, the mutual independence of the structures of the electric core rivet 11 and the liquid injection hole 12 on the electric core piece 16 can be ensured, and the functional reliability of the electric core rivet 11 and the liquid injection hole 12 can be ensured on the premise of realizing the compact structure of the electric core piece 16. In embodiments of the present utility model, the cell rivet 11 may be replaced with other conductive structures.

Further, a liquid injection seal 30 is provided on one side of the cell 16 and seals the liquid injection hole 12, and the liquid injection seal 30 is located between the circuit board 20 and one side of the cell 16 and is electrically connected with the circuit board 20. Specifically, the liquid injection sealing member 30 is disposed on one side of the cell member 16 and seals the liquid injection hole 12, so that not only can the injection of the cell member 16 be facilitated, but also the leakage of the electrolyte from the cell member 16 after the production of the cell assembly 100 is completed can be prevented, and the sealing performance of the liquid injection hole 12 can be ensured.

Further, the liquid-filled seal 30 is an electrically conductive member and has a second polarity. Specifically, the liquid injection sealing member 30 is made of conductive materials, the liquid injection sealing member 30 is a pole in the battery cell assembly 100, has second polarity, can play a role in leading out and extending an electrode of the battery cell assembly 100, is positioned between the circuit board 20 and one side of the battery cell assembly 16 and is electrically connected with the circuit board 20, so that the tightness of the liquid injection hole 12 can be ensured, the circuit communication between the liquid injection sealing member 30 and the circuit board 20 can be facilitated, the sharing of one part of a plurality of functional structures in the battery cell assembly 100 can be realized, the sharing of the parts of the battery cell assembly 100 can be realized, the arrangement of other pole structures in the battery cell assembly 100 can be omitted, the structural compactness of the battery cell assembly 100 can be improved, the number of parts of the battery cell assembly 100 can be reduced, the liquid injection sealing member 30 is electrically connected with the circuit board 20, the battery cell assembly 16 can complete the charging and discharging of the battery cell assembly 100 through the electrical connection of the battery cell rivet 11 and the circuit board 20, and the reliable and stable circuit of the battery cell assembly 100 can be provided.

In the embodiment of the utility model, the electric core rivet 11 is electrically connected with the circuit board 20, the liquid injection sealing piece 30 is electrically connected with the circuit board 20, so that the functional diversity of parts in the electric core assembly 100 can be improved, the stable and reliable structure of the electric core assembly 100 can be ensured, the normal charging and discharging functions of the electric core assembly 100 can be ensured, the parts in the electric core assembly 100 can be fully utilized, the functional setting of the part structure in the electric core assembly 100 can be optimized, the number of parts in the electric core assembly 100 can be reduced, the space of the electric core assembly 100 can be saved, the volume of the electric core assembly 100 can be reduced, and the production cost of the electric core assembly 100 can be reduced.

Thus, by providing the cell rivet 11 and the fluid seal 30 in the cell assembly 100, the cell rivet 11 has a first polarity and the fluid seal 30 seals against the fluid orifice and has a second polarity. In this way, the cell rivet 11 and the liquid injection seal 30 can not only play a structural role in the cell assembly 100, but also realize the polarity extraction of the cell assembly 100. Therefore, by arranging the cell rivet 11 and the liquid injection sealing member 30 in the cell assembly 100, the cell rivet 11 has a first polarity, the liquid injection sealing member 30 seals the liquid injection hole 12 and has a second polarity, so that the cell rivet 11 and the liquid injection sealing member 30 play a structural role in the cell assembly 100 and simultaneously bear the polarity leading-out function of the cell assembly 100, the functionality of parts in the battery assembly 1000 can be improved, the number of parts of the battery assembly 1000 can be reduced, the assembly process of the cell assembly 100 can be simplified, the volume of the battery assembly 1000 can be reduced, and the production cost of the battery assembly 1000 can be reduced.

As shown in fig. 1, 3 and 4, the liquid injection sealing member 30 includes a sealing plate 31 and a connecting plate 32, the sealing plate 31 is disposed on one side of the cell 16, the sealing plate 31 seals the liquid injection hole 12 and is electrically connected to the cell 16, and the connecting plate 32 is electrically connected to the sealing plate 31. Specifically, the liquid injection sealing member 30 includes sealing plate 31 and connection piece 32, and sealing plate 31 can play sealed effect to liquid injection hole 12, and connection piece 32 can be used for being connected with circuit board 20 electricity and electric core piece 16 turnover, so sets up, can be convenient for the installation and the connection of liquid injection sealing member 30, and sealing plate 31 sets up in one side of electric core piece 16, and sealing plate 31 seals liquid injection hole 12 to be connected with electric core piece 16 electricity, like this can make the stable circuit of formation between electric core piece 16 and sealing plate 31 when guaranteeing the sealing performance of liquid injection sealing member 30 stable. In the embodiment of the utility model, the connection sheet 32 and the cell rivet 11 are battery poles, and the polarities of the connection sheet 32 and the cell rivet 11 are opposite.

In the embodiment of the utility model, one end of the connecting piece 32 is connected with the sealing piece 31, the other end is arranged towards the circuit board 20 in a protruding way, and is electrically connected with the sealing piece 31, the connecting piece 32 is electrically connected with the sealing piece 31 through the cell piece 16, the connecting piece 32 is connected with the sealing piece 31, and the connecting piece 32 is electrically connected with the circuit board 20, so that the communication of a circuit among the cell piece 16, the liquid injection sealing piece 30 and the circuit board 20 can be realized, and one end of the connecting piece 32 is arranged towards the circuit board 20 in a protruding way, so that the installation connection of the connecting piece 32 and the circuit board 20 can be facilitated.

In the embodiment of the present utility model, the sealing plate 31 is welded to the outer periphery of the pouring spout 12. Specifically, through setting up sealing piece 31 and annotating the periphery welded fastening of liquid hole 12 to sealing piece 31 in annotating liquid seal 30 to annotating liquid hole 12's sealing, sealing piece 31 welds in annotating the periphery of liquid hole 12, not only can guarantee that sealing piece 31 is stable and reliable to the structure of electric core piece 16 one side, but also can promote sealing piece 31 and annotate liquid hole 12's sealed effect, can promote annotating liquid seal 30 and annotate the leakproofness of liquid hole 12, can effectively prevent that electrolyte in the electric core piece 16 from spilling. In the embodiment of the present utility model, the welding manner of the sealing plate 31 and the outer periphery of the liquid injection hole 12 includes, but is not limited to, laser welding, resistance rolling welding and solder welding, and when resistance rolling and laser welding are adopted, the welding is performed for a plurality of times around the circumference of the liquid injection hole 12, so that the welding tightness and the welding structure reliability can be improved.

Referring to fig. 1, the cell 16 is provided with a positioning groove 13 at a position on the outer periphery of the injection hole 12, a sealing piece 31 is disposed in the positioning groove 13, and the sealing piece 31 is flush with a surface of the cell 16 on which the positioning groove 13 is disposed. Specifically, the electric core piece 16 is provided with the constant head tank 13 in the position of annotating the liquid hole 12 periphery, the sealing piece 31 sets up in the constant head tank 13, so set up, can make annotate the structure position of liquid seal piece 30 on electric core piece 16 reliable and stable, set up the constant head tank 13, the constant head tank 13 is sunken to the direction that is close to electric core piece 16, can be convenient for annotate liquid seal piece 30 and electric core piece 16 location, can promote the equipment convenience of annotating liquid seal piece 30 in electric core assembly 100 like this, can promote the structural stability of electric core assembly 100, can promote the production efficiency of electric core assembly 100, sealing piece 31 and electric core piece 16 correspond one side surface looks parallel and level that is provided with the constant head tank 13, can promote the compact structure of electric core assembly 100, can guarantee the structural stability of sealing piece 31 on one side of electric core piece 16.

As shown in fig. 3 to 4, the seal piece 31 is provided with an explosion-proof indentation 311, the center of the explosion-proof indentation 311 corresponds to the liquid injection hole 12, and the explosion-proof indentation 311 extends to the periphery along the radial direction of the liquid injection hole 12. Specifically, the sealing piece 31 is provided with the explosion-proof indentation 311, the center of the explosion-proof indentation 311 corresponds to the liquid injection hole 12, the explosion-proof indentation 311 extends to the periphery along the radial direction of the liquid injection hole 12, and by the arrangement, the battery cell piece 16 can be prevented from being exploded due to the increase of the volume of internal gas, compared with other explosion-proof structures, the space structure of the battery cell assembly 100 can be saved due to the arrangement of the explosion-proof indentation 311, the number of parts of the battery cell assembly 100 can be reduced, the explosion-proof reliability of the battery cell assembly 100 can be ensured, the structure of the battery cell assembly 100 can be optimized, and the production cost of the battery cell assembly 100 can be reduced.

Referring to fig. 1, 2 and 4, the cell 16 includes a cell main body, a housing 10 and a cover 14, where the cell main body is disposed in the housing 10, one side of the housing 10 is opened, the cover 14 is disposed on the open side of the housing 10, the cell rivet 11 and the liquid injection sealing member 30 are disposed on one side of the cell main body, a first avoiding opening 141 and a second avoiding opening 142 are disposed on the cover 14, the first avoiding opening 141 avoids the cell rivet 11, and the second avoiding opening 142 avoids the liquid injection sealing member 30. Specifically, the electric core piece 16 includes electric core main part, casing 10 and lid 14, and the electric core main part sets up in casing 10, and one side of casing 10 opens the setting, and lid 14 sets up in the open one side of casing 10, can be convenient for place the electric core main part in casing 10 like this, and casing 10 and lid 14 can play the guard action to the electric core main part jointly, can prevent dust, moisture entering electric core main part, influence the job stabilization nature of electric core main part.

Further, the electric core rivet 11 is arranged on one side of the electric core main body, the cover body 14 is provided with the first avoiding opening 141 and the second avoiding opening 142, the first avoiding opening 141 is used for avoiding the rivet, so that the electric core rivet 11 protrudes out of the cover body 14, the electric core rivet 11 can be ensured to smoothly lead out the first polarity of the electric core piece 16, the cover body 14 can be prevented from covering the pole post of the electric core piece 16 to cause the electric core piece 16 to be electrically connected with the electric part, the second avoiding opening 142 is used for avoiding the liquid injection sealing piece 30, the liquid injection sealing piece 30 can be exposed from the cover body 14, the second polarity of the electric core piece 16 can be ensured to be smoothly led out by the liquid injection sealing piece 30, and the cover body 14 can be prevented from covering the pole post of the electric core piece 16 to cause the electric core piece 16 to be electrically connected with the electric part.

As shown in fig. 1, 2 and 4, the outer periphery of the cell rivet 11 is sleeved with an insulating sealing ring 111, and the insulating sealing ring 111 is located between the cell rivet 11 and the inner wall of the first avoiding port 141. The periphery cover of electric core rivet 11 is equipped with insulating seal 111, and insulating seal 111 is located between the inner wall of electric core rivet 11 and first dodge mouthful 141, and insulating seal 111 can play insulating effect between electric core rivet 11 and the lid 14, can guarantee electric core rivet 11 and circuit board 20's electric conductivity, can prevent effectively that the circuit in the electric core subassembly 100 from taking place the short circuit, can promote the operational safety of electric core subassembly 100.

As shown in connection with fig. 1 and 2, the cell 16 is peripherally wrapped with an insulating label 40. Specifically, in the embodiment of the present utility model, after the assembly of the battery cell assembly 100 is completed, the battery cell assembly 100 is placed in a mold, and an insulating material is injected into the mold to be molded through injection molding, encapsulation and other processes, so that the structural fixation and circuit connection of the circuit board 20 and the battery cell 16 can be realized, and finally, the insulating label 40 is wrapped around the periphery of the molded battery cell assembly 100, thereby completing the production and assembly of the battery cell assembly 100.

According to the embodiment of the present utility model, as shown in fig. 1 and 2, the battery assembly 1000 includes the circuit board 20 and the above-mentioned battery cell assembly 100, and further, the circuit board 20 is disposed at one side of the battery cell 16 and electrically connected with the battery cell rivet 11. Specifically, the circuit board 20 is disposed on one side of the electric core piece 16, so that the structure of the circuit board 20 and the electric core piece 16 is more compact in the battery assembly 1000, the space utilization rate of the battery assembly 1000 can be improved, connection between the circuit board 20 and the electric core piece 16 can be facilitated, the circuit board 20 is electrically connected with the electric core rivet 11, the electric core rivet 11 and the circuit board 20 are smooth, the electric core piece 16 can complete charging and discharging of the battery assembly 1000 through the electrical connection of the electric core rivet 11 and the circuit board 20, the circuit of the battery assembly 1000 is stable and reliable, the electric core rivet 11 and the liquid injection sealing piece 30 in the electric core assembly 100 are electrically connected with the circuit board 20, so that the circuit connectivity in the battery assembly 1000 can be ensured, and the battery assembly 1000 can complete charging and discharging functions and the like.

As shown in fig. 1, the circuit board 20 is provided with a connection hole 21, and the liquid injection seal 30 penetrates the connection hole 21 and is electrically connected to the circuit board 20. Specifically, be provided with connecting hole 21 on the circuit board 20, annotate the liquid seal 30 and wear to establish connecting hole 21 through the connection piece 32 to be connected with the circuit board 20 electricity, so set up, can guarantee that circuit board 20 stable in structure, under the general circumstances of circuit, the connection piece 32 of being convenient for wear to establish circuit board 20, can guarantee the reliability that connection piece 32 and circuit board 20 electricity are connected, can guarantee the intercommunication of circuit between electric core piece 16, annotate liquid seal 30 and circuit board 20, thereby can promote the circuit intercommunication reliability in the battery pack 1000, can promote the operational reliability of battery pack 1000.

According to some embodiments of the present utility model, as shown in connection with fig. 1, the connection piece 32 is inserted and fixed with the connection hole 21, and is in contact electrical connection with the side wall of the connection hole 21. Specifically, in some embodiments of the present utility model, the connection piece 32 is inserted and fixed with the connection hole 21, and is in contact and electric connection with the side wall of the connection hole 21, so that a tight fit between the liquid injection sealing member 30 and the circuit board 20 can be achieved, the reliability of the electric connection between the connection piece 32 and the circuit board 20 can be ensured, the communication between the electric core member 16, the liquid injection sealing member 30 and the circuit board 20 can be ensured, and thus the reliability of the electric circuit communication in the battery assembly 1000 can be improved, and the operational reliability of the battery assembly 1000 can be improved.

According to further embodiments of the utility model, the connecting piece 32 protrudes into the connecting hole 21, and the connecting piece 32 is welded to the side wall of the connecting hole 21 or bonded by conductive glue. Specifically, in other embodiments of the present utility model, the connecting piece 32 extends into the connecting hole 21, the connecting piece 32 is welded to the side wall of the connecting hole 21 or is adhered by conductive glue, the welding and the conductive glue can both realize the conduction between the connecting piece 32 and the circuit board 20, and under the condition that a gap exists between the connecting piece 32 and the side wall of the connecting hole 21, the conduction between the liquid injection sealing member 30 and the circuit board 20 can still be realized, the reliability of the electrical connection between the connecting piece 32 and the circuit board 20 can be ensured, and the communication between the electric core member 16, the liquid injection sealing member 30 and the circuit board 20 can be ensured, so that the reliability of the circuit communication in the battery assembly 1000 can be improved, and the operational reliability of the battery assembly 1000 can be improved.

According to further embodiments of the utility model, the connection tabs 32 are provided through the connection holes 21 and are soldered or glued by means of conductive glue to the surface of the side of the circuit board 20 facing away from the cell 16. Specifically, the connection piece 32 is penetrated through the connection hole 21 and is welded or adhered to the surface of the side, away from the cell piece 16, of the circuit board 20, the connection piece 32 is connected with the surface of the side, away from the cell piece 16, of the circuit board 20, connection stability of the connection piece 32 and the circuit board 20 can be further enhanced, conductivity between the connection piece 32 and the circuit board 20 can be realized through welding and conductive glue, conductivity between the liquid injection sealing piece 30 and the circuit board 20 can still be realized under the condition that gaps exist between the connection piece 32 and the side wall of the connection hole 21, reliability of electric connection between the connection piece 32 and the circuit board 20 can be ensured, communication between the cell piece 16, the liquid injection sealing piece 30 and the circuit board 20 can be ensured, and accordingly, circuit communication reliability in the battery assembly 1000 can be improved, and working reliability of the battery assembly 1000 can be improved.

Referring to fig. 1, the circuit board 20 includes a circuit board main body 22 and an insulating member 23, the insulating member 23 is nested on the surface of the circuit board main body 22, and wraps the circuit board main body 22, the connection hole 21 is disposed on the circuit board main body 22, and the insulating member 23 is provided with an avoidance hole 231, where the avoidance hole 231 corresponds to the connection hole 21. Specifically, the circuit board 20 includes a circuit board main body 22 and an insulating member 23, where the insulating member 23 is nested on the surface of the circuit board main body 22 and wraps the circuit board main body 22, so that not only can the structural stability of the circuit board 20 in the battery assembly 1000 be improved, but also the circuit board 20 can be prevented from contacting with the surrounding environment outside the battery assembly 1000, and the battery assembly 1000 can be effectively prevented from being shorted, thereby improving the use safety of the battery assembly 1000 and protecting the stable communication of the circuit in the battery assembly 1000.

Further, the connecting hole 21 is formed in the circuit board main body 22, the avoiding hole 231 is formed in the insulating member 23, the avoiding hole 231 corresponds to the connecting hole 21, so that the connecting sheet 32 penetrates out of the insulating member 23, a battery polarity leading-out structure can be provided for the battery module 100, a connection position can be provided for the battery module 1000 and an external electric member to be electrified, functional diversity of the liquid injection sealing member 30 can be improved, post welding operation of the battery module 1000 can be reduced, stable and reliable structure of the battery module 1000 can be guaranteed, normal charging and discharging functions of the battery module 1000 can be guaranteed, part functionality in the battery module 1000 can be improved, part function setting in the battery module 1000 can be optimized, the number of parts in the battery module 1000 can be reduced, space of the battery module 1000 can be saved, the volume of the battery module 1000 can be reduced, and production cost of the battery module 1000 can be reduced.

Be provided with connecting band 24 on circuit board 20, connecting band 24 is connected with electric core rivet 11 electricity, and one side of electric core subassembly 100 is provided with insulating adhesive tape 15, is provided with the third on the insulating adhesive tape 15 and dodges mouthful 151 and fourth dodges mouthful 152, and the third dodges mouthful 151 dodges electric core rivet 11, and fourth dodges mouthful 152 dodges notes liquid seal 30, and insulating adhesive tape 15 is located between connecting band 24 and the electric core piece 16. Specifically, the circuit board 20 is provided with a connection belt 24, the connection belt 24 is electrically connected with the cell rivet 11, and the connection belt 24 can realize the electrical connection between the cell rivet 11 and the circuit board 20. In an embodiment of the present utility model, the cell rivet 11 may be lengthened and the setting of the connection strap 24 may be eliminated.

Further, one side of the battery cell assembly 100 is provided with the insulating adhesive paper 15, the insulating adhesive paper 15 is provided with a third avoiding opening 151 and a fourth avoiding opening 152, the third avoiding opening 151 is used for avoiding the battery cell rivet 11, the fourth avoiding opening 152 is used for avoiding the liquid injection sealing member 30, the insulating adhesive paper 15 is positioned between the connecting belt 24 and the battery cell member 16, so that the stable and reliable electric connection between the battery cell rivet 11 and the circuit board 20 can be ensured, short circuits of a circuit in the battery assembly 1000 can be effectively prevented, and the working safety of the battery assembly 1000 can be improved. In the embodiment of the utility model, the insulating adhesive paper 15 is provided with a fold line, and the fold line corresponds to the edge of the battery cell assembly 100, so that the insulating adhesive paper 15 can be conveniently assembled on the battery cell assembly 100, the insulating adhesive paper 15 can be attached to the battery cell assembly 100, and the structural integrity of the battery assembly 1000 can be improved.

The electronic device according to the present utility model may mainly include: the battery assembly 1000, when the battery assembly 1000 is applied to an electronic device, not only can the structure of the electronic device be more compact and the volume of the electronic device be more compact, but also the cost of the electronic device can be reduced.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A cell assembly (100), comprising:

the battery cell comprises a battery cell piece (16), wherein a battery cell rivet (11) and a liquid injection hole (12) are formed in one side of the battery cell piece (16), the liquid injection hole (12) and the battery cell rivet (11) are arranged at intervals, and the battery cell rivet (11) has a first polarity;

and the liquid injection sealing piece (30) is arranged on one side of the electric core piece (16) and seals the liquid injection hole (12), and the liquid injection sealing piece (30) is a conductive piece and has a second polarity.

2. The cell assembly (100) of claim 1, wherein the liquid injection seal (30) comprises:

a sealing sheet (31), wherein the sealing sheet (31) is arranged on one side of the electric core piece (16), and the sealing sheet (31) seals the liquid injection hole (12) and is electrically connected with the electric core piece (16);

-a connection piece (32), said connection piece (32) being electrically connected to said sealing piece (31).

3. The cell assembly (100) according to claim 2, wherein the sealing sheet (31) is welded and fixed to the outer periphery of the liquid injection hole (12).

4. The cell assembly (100) of claim 2, wherein the cell (16) comprises:

the positioning groove (13), positioning groove (13) set up in annotate liquid hole (12) periphery, sealing piece (31) set up in positioning groove (13), sealing piece (31) with electric core piece (16) are provided with correspondingly one side surface looks parallel and level of positioning groove (13).

5. The cell assembly (100) according to claim 2, wherein the sealing sheet (31) is provided with an explosion-proof indentation (311), the center of the explosion-proof indentation (311) corresponds to the liquid injection hole (12), and the explosion-proof indentation (311) extends to the periphery along the radial direction of the liquid injection hole (12).

6. The cell assembly (100) of claim 2, wherein the cell (16) comprises: cell main part, casing (10) and lid (14), the cell main part set up in casing (10), one side of casing (10) is opened and is set up, lid (14) set up in the open one side of casing (10), be provided with on lid (14) and dodge mouthful (141) and second and dodge mouthful (142), first dodge mouthful (141) dodge electric core rivet (11), second dodge mouthful (142) dodge annotate liquid sealing member (30).

7. The cell assembly (100) according to claim 6, wherein an insulating sealing ring (111) is sleeved on the periphery of the cell rivet (11), and the insulating sealing ring (111) is located between the cell rivet (11) and the inner wall of the first avoiding port (141).

8. A battery assembly (1000), comprising:

a wiring board (20); a kind of electronic device with high-pressure air-conditioning system

The cell assembly (100) of any of claims 2-7, the cell rivet (11) and the liquid injection seal (30) each being electrically connected to the circuit board (20).

9. The battery assembly (1000) according to claim 8, wherein the circuit board (20) is provided with a connection hole (21), and the liquid injection sealing member (30) is inserted through the connection hole (21) and electrically connected to the circuit board (20).

10. The battery assembly (1000) according to claim 9, wherein the connecting piece (32) is inserted and fixed with the connecting hole (21) and is in contact electrical connection with a side wall of the connecting hole (21).

11. The battery assembly (1000) according to claim 10, wherein the connecting piece (32) protrudes into the connecting hole (21), the connecting piece (32) being welded to a side wall of the connecting hole (21) or adhesively provided by conductive glue; or (b)

The connecting sheet (32) penetrates through the connecting hole (21) and is welded or bonded with the surface of one side, far away from the battery core piece (16), of the circuit board (20).

12. The battery assembly (1000) of claim 9, wherein the wiring board (20) comprises:

an insulating member (23), wherein the insulating member (23) is provided with a relief hole (231);

the circuit board comprises a circuit board main body (22), wherein the connecting hole (21) is formed in the circuit board main body (22), the avoidance hole (231) corresponds to the connecting hole (21), and the insulating piece (23) is nested on the surface of the circuit board main body (22) and wraps the circuit board main body (22).

13. The battery assembly (1000) according to claim 8, wherein a connecting belt (24) is arranged on the circuit board (20), the connecting belt (24) is electrically connected with the cell rivet (11), an insulating adhesive paper (15) is arranged on one side of the cell assembly (100), a third avoiding opening (151) and a fourth avoiding opening (152) are arranged on the insulating adhesive paper (15), the third avoiding opening (151) is avoided from the cell rivet (11), the fourth avoiding opening (152) is avoided from the liquid injection sealing member (30), and the insulating adhesive paper (15) is positioned between the connecting belt (24) and the cell member (16).

14. An electronic device, comprising: the battery assembly (1000) of any of claims 8-13.

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