CN220021469U - Battery assembly and electric equipment - Google Patents

Abstract

The utility model discloses a battery pack and electric equipment, the battery pack includes: the battery comprises a first battery unit, a second battery unit, an electric connector and a blocking device. The first battery unit and the second battery unit comprise electric cores, an electric connecting piece is electrically connected between the first battery unit and the second battery unit, a blocking device seals a part of the electric connecting piece, the blocking device is used for separating the battery assembly into at least two isolation cavities, and the first battery unit and the second battery unit are respectively arranged in the two isolation cavities. Therefore, the blocking device blocks the two isolation cavities where the first battery unit and the second battery unit are located, so that the two battery units can be prevented from being mutually influenced when thermal runaway occurs, the range of thermal diffusion is reduced when the thermal runaway occurs, the safety of the battery units which are not in thermal runaway is protected, and the aggravation of the thermal diffusion is avoided. Meanwhile, the blocking device can seal the electric connecting piece, so that the electric connecting piece is prevented from being corroded by water vapor and the like, and the stability of connection of the electric connecting piece is improved.

Description

Battery assembly and electric equipment

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery assembly and electric equipment.

Background

Among the prior art, battery pack is heated easily in the use and takes place the security that thermal runaway influences battery pack used, when battery pack inside includes more than two battery cells, and the high temperature gas that one of them battery cell thermal runaway produced forms the impact to other battery cells easily and leads to a plurality of battery cell thermal runaway, and battery pack's security is lower.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a battery assembly that can reduce the diffusion of thermal runaway in the battery assembly and improve the safety of the battery assembly.

Another object of the present utility model is to provide a powered device, including the battery assembly described in the above embodiments.

A battery assembly according to an embodiment of the first aspect of the present utility model includes: the battery pack comprises a first battery unit, a second battery unit, an electric connecting piece and a blocking device, wherein the first battery unit and the second battery unit comprise electric cores, the electric connecting piece is electrically connected between the first battery unit and the second battery unit, the blocking device seals a part of the electric connecting piece, the blocking device is used for dividing the battery pack into at least two isolation cavities, and the first battery unit and the second battery unit are respectively arranged in the two isolation cavities.

According to the battery assembly, the first battery unit and the second battery unit are connected through the electric connector to keep electricity in the battery assembly, so that the battery assembly can work normally, the blocking device blocks the two isolation cavities where the first battery unit and the second battery unit are located, the two battery units can be prevented from being influenced mutually when thermal runaway occurs, the thermal diffusion range when the thermal runaway occurs is reduced, the safety of the battery units which are not in thermal runaway is protected, and the aggravation of the thermal diffusion is avoided. Meanwhile, the blocking device can seal the electric connecting piece, so that the electric connecting piece is prevented from being corroded by water vapor and the like, and the stability of connection of the electric connecting piece is improved.

In some embodiments, the barrier defines a sealed cavity therein, the portion of the electrical connector being located within the sealed cavity, the sealed cavity being filled with a first sealant to seal the portion of the electrical connector.

In some embodiments, the barrier device comprises: the battery pack comprises a blocking piece, a first supporting piece and a second supporting piece, wherein a first opening is formed in one side of the blocking piece, facing the first battery unit, a second opening is formed in one side of the blocking piece, facing the second battery unit, two ends of the electric connecting piece penetrate through the first opening and the second opening respectively and are electrically connected with the first battery unit and the second battery unit, and a glue injection opening is formed in the blocking piece. The first supporting piece is arranged at the first opening, and the first supporting piece and the electric connecting piece jointly seal the first opening. The second supporting piece is arranged at the second opening, the second supporting piece and the electric connecting piece jointly seal the second opening, and the blocking piece, the first supporting piece and the second supporting piece jointly define the sealing cavity.

In some embodiments, further comprising: a first compressible member disposed on an inner wall of the first opening, the first compressible member abutting between the electrical connector and a sidewall of the first opening to seal a gap between the electrical connector and the sidewall of the first opening; the second compressible member is disposed on an inner wall of the second opening, the second compressible member is abutted between the electrical connector and a sidewall of the second opening to seal a gap between the electrical connector and the sidewall of the second opening, and the barrier member, the first compressible member, the first support plate, the second compressible member, and the second support plate collectively define the sealed cavity.

In some embodiments, the first compressible member includes a first side and two second sides, the first side is connected between the same ends of the two second sides, the first side is connected with the bottom wall of the first opening, the two second sides are respectively connected with the two side walls of the first opening, the bottom surface of the electrical connector is abutted with the first side, the two sides of the width direction of the electrical connector are abutted with the two second sides, and the first supporting piece is abutted with the top surface of the electrical connector. The second compressible member comprises a third side and two fourth sides, wherein the third side is connected between the same ends of the two fourth sides, the third side is connected with the bottom wall of the second opening, the two fourth sides are respectively connected with the two side walls of the second opening, the bottom surface of the electric connecting member is in butt joint with the third side, the two sides of the width direction of the electric connecting member are in butt joint with the two fourth sides, and the second supporting piece is in butt joint with the top surface of the electric connecting member.

In some embodiments, the width of the second side edge increases gradually from the free end of the second side edge toward the end of the second side edge connected to the first side edge, and the width of the fourth side edge increases gradually from the free end of the fourth side edge toward the end of the fourth side edge connected to the third side edge.

In some embodiments, the first support tab is connected to one side surface of the two second sides adjacent the center of the sealed cavity, and the second support tab is connected to one side surface of the two fourth sides adjacent the center of the sealed cavity.

In some embodiments, the barrier device further comprises: the second sealing glue and the third sealing glue are arranged between the first supporting sheet and the electric connecting piece to seal a gap between the first supporting sheet and the electric connecting piece, and the third sealing glue is arranged between the second supporting sheet and the electric connecting piece to seal a gap between the second supporting sheet and the electric connecting piece.

In some embodiments, the second and third sealants are structural glues.

In some embodiments, the electrical connector comprises: the battery pack comprises a first electric connecting piece and a second electric connecting piece, wherein one end of the first electric connecting piece is electrically connected with the electric core of the first battery unit, the other end of the first electric connecting piece stretches into the sealing cavity, one end of the second electric connecting piece is electrically connected with the electric core of the second battery unit, and the other end of the second electric connecting piece stretches into the sealing cavity and is overlapped with the other end of the first electric connecting piece to realize electric connection.

In some embodiments, a support boss is disposed within the barrier device, the support boss being located within the sealed cavity, the other end of the first electrical connector and the other end of the second electrical connector being supported on the support boss.

In some embodiments, the other end of the first electrical connector is formed with a first connection hole, the other end of the second electrical connector is formed with a second connection hole, and the support boss is formed with a relief hole, the relief hole being opposite to both the first connection hole and the second connection hole.

In some embodiments, the barrier device comprises: the separation beam is arranged between the first battery unit and the second battery unit, the separation piece is supported on the separation beam, and the glue injection port is formed on one side, far away from the separation beam, of the separation piece.

In some embodiments, the barrier is a plastic piece, the first compressible piece and the second compressible piece are insulating foam pieces, and the first support sheet and the second support sheet are insulating sheets.

In some embodiments, the first sealant is a potting adhesive.

In some embodiments, further comprising: the tray and the top cover are opened at one side of the tray, and the first battery unit, the second battery unit, the electric connecting piece and the blocking device are arranged in the tray; the top cover is arranged on one open side of the tray, the top cover is connected with the blocking device, and the top cover and the blocking device jointly separate the two isolation cavities.

An electrical consumer according to an embodiment of the second aspect of the utility model comprises a battery assembly as described in the above embodiments.

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 assembled schematic view of a battery cell and a blocking device according to an embodiment of the present utility model.

Fig. 2 is an enlarged schematic view of the region P in fig. 1.

Fig. 3 is a schematic partial cross-sectional view of a battery assembly according to an embodiment of the present utility model.

Fig. 4 is an enlarged schematic view of the Q region in fig. 3.

Fig. 5 is an enlarged schematic view of the N region in fig. 4.

Fig. 6 is a schematic view of a compressible member according to an embodiment of the utility model.

Fig. 7 is a schematic view of a barrier according to an embodiment of the utility model.

Reference numerals:

100. a battery assembly;

10. a blocking device; 11. sealing the cavity; 111. a glue injection port; 112. a first sealant; 12. a barrier; 121. a first opening; 122. a second opening; 123. a support boss; 1231. avoidance holes; 13. a first compressible member; 131. a first side; 132. a second side; 14. a second compressible member; 141. a third side; 142. a fourth side; 15. a first support sheet; 16. a second support sheet; 17. a second sealant; 18. a third sealant;

20. an electrical connection; 21. a first electrical connection; 211. a first connection hole; 22. a second electrical connection; 221. a second connection hole;

30. a first battery cell; 40. a second battery cell; 50. a partition beam; 60. a tray; 70. isolating the cavity.

Detailed Description

Embodiments of the present utility model are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and a battery assembly 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 7, including: the first battery cell 30, the second battery cell 40, the electrical connector 20 and the barrier device 10.

Specifically, as shown in fig. 1 and 2, each of the first and second battery cells 30 and 40 includes a plurality of battery cells spaced apart along a width direction B of the electrical connector 20, the first and second battery cells 30 and 40 are spaced apart along a length direction a of the electrical connector 20, the electrical connector 20 is electrically connected between the first and second battery cells 30 and 40, the blocking device 10 seals a portion of the electrical connector 20, the blocking device 10 is used to divide the battery assembly 100 into at least two isolation chambers 70, the first and second battery cells 30 and 40 are respectively disposed within the two isolation chambers 70, and the blocking device 10 is configured to block a high temperature gas and/or an electrolyte when thermal runaway of at least a portion of the battery cells occurs.

For example, the internal blocking device 10 of the battery assembly 100 divides the battery assembly 100 into two isolation chambers 70, the two isolation chambers 70 are disposed along the length direction a of the electrical connector 20, the two isolation chambers 70 are not communicated with each other, the first battery unit 30 and the second battery unit 40 are respectively disposed in the two isolation chambers 70 and connected by the electrical connector 20, and the electrical connector 20 is disposed between the first battery unit 30 and the second battery unit 40. During the use of the battery assembly 100, when the first battery unit 30 or the second battery unit 40 is in thermal runaway, the blocking device 10 can block the communication between the two isolation cavities 70, so that the first battery unit 30 and the second battery unit 40 can avoid thermal diffusion caused by mutual influence during the thermal runaway, that is, high-temperature gas or electrolyte generated during the thermal runaway of the first battery unit 30 can not affect the second battery unit 40, and vice versa for the second battery unit 40. The first and second battery cells 30 and 40 may be provided at both ends of the electrical connector 20 along the length direction a of the electrical connector 20, or the first and second battery cells 30 and 40 may be spaced apart along the thickness direction of the electrical connector 20.

According to the battery assembly 100 of the embodiment of the utility model, the first battery unit 30 and the second battery unit 40 are connected through the electric connector 20 to keep the electricity in the battery assembly 100, so that the battery assembly 100 can work normally, the blocking device 10 blocks the two isolation cavities 70 where the first battery unit 30 and the second battery unit 40 are located, the two battery units can be prevented from being influenced mutually when thermal runaway occurs, the thermal diffusion range when thermal runaway occurs is reduced, the safety of the battery units which do not occur thermal runaway is protected, and the aggravation of the thermal diffusion is avoided. Meanwhile, the blocking device 10 can seal the electric connector 20, so that the electric connector 20 is prevented from being corroded by moisture and the like, and the stability of connection of the electric connector 20 is improved.

In some embodiments, as shown in fig. 2-4, the barrier device 10 defines a seal cavity 11 therein, a portion of the electrical connector 20 being located within the seal cavity 11, the seal cavity 11 being filled with a first sealant 112 to seal a portion of the electrical connector 20. One end of the electric connector 20 is connected with the first battery unit 30, the other end of the electric connector 20 is connected with the second battery unit 40, a part of the electric connector 20 away from the first battery unit 30 and the second battery unit 40 is located in the sealing cavity 11, and after the electric connector 20 is assembled with the blocking device 10, the sealing cavity 11 is filled with first sealant 112 to seal the sealing cavity 11. Therefore, a part of the electric connector 20 is positioned in the sealing cavity 11 and seals the sealing cavity 11 through the first sealant 112, so that the part of the electric connector 20 positioned in the sealing cavity 11 can be sealed, the space inside the battery assembly 100 is saved, the protection of the electric connector 20 is increased, and the isolation effect of two battery units is improved.

In some embodiments, as shown in fig. 2, 4 and 7, the barrier device 10 comprises: the blocking member 12, the first supporting piece 15 and the second supporting piece 16, a first opening 121 is formed on one side of the blocking member 12 facing the first battery unit 30, a second opening 122 is formed on one side of the blocking member 12 facing the second battery unit 40, two ends of the electric connecting piece 20 respectively penetrate through the first opening 121 and the second opening 122 to be electrically connected with the first battery unit 30 and the second battery unit 40, a glue injection opening 111 is formed on the blocking member 12, and the sealing cavity 11 is defined by the blocking member 12, the first supporting piece 15 and the second supporting piece 16. When the first battery cell 30 and the second battery cell 40 are disposed at intervals along the length direction a of the electrical connector 20, the first opening 121 and the second opening 122 are disposed at two ends of the barrier 12 along the length direction a of the electrical connector 20, the barrier 12 is disposed between the two battery cells, and the electrical connector 20 is connected to the first battery cell 30 and the second battery cell 40 through the first opening 121 and the second opening 122, respectively. The glue injection port 111 is provided above the barrier member 12, and the first sealant 112 is injected from the glue injection port 111 after the barrier device 10, the first battery cell 30, the second battery cell 40, and the electrical connection member 20 are assembled.

As shown in fig. 2, the first support piece 15 is provided at the first opening 121, and the first support piece 15 and the electrical connector 20 jointly close the first opening 121. The second support piece 16 is disposed at the second opening 122, and the second support piece 16 and the electrical connector 20 together close the second opening 122. For example, the first supporting piece 15 and the second supporting piece 16 have certain elasticity, and the area of the supporting piece is larger than the area of the corresponding opening, so that the supporting piece is deformed to seal the opening.

Thus, the first support sheet 15 and the second support sheet 16 can facilitate sealing the first opening 121 and the second opening 122, increase the tightness of the sealing cavity 11, improve the blocking capability of the blocking device 10 between two adjacent isolating cavities 70, and increase the use safety of the battery assembly 100.

In some alternative embodiments, as shown in fig. 2 and 4, the barrier device 10 further comprises: a first compressible member 13 and a second compressible member 14, the first compressible member 13 being disposed on an inner wall of the first opening 121, the first compressible member 13 being stopped between the electrical connector 20 and a side wall of the first opening 121 to seal a gap between the electrical connector 20 and the side wall of the first opening 121. The second compressible member 14 is disposed on an inner wall of the second opening 122, the second compressible member 14 abutting between the electrical connector 20 and a sidewall of the second opening 122 to seal a gap between the electrical connector 20 and the sidewall of the second opening 122. That is, when the electrical connector 20 is assembled with the barrier member 12, the first compressible member 13 is first installed at the first opening 121 of the barrier member 12, the second compressible member 14 is disposed at the second opening 122, the first and second compressible members 13, 14 are positioned between the electrical connector 20 and the barrier member 12, and the first and second compressible members 13, 14 can form a seal against the gap formed between the electrical connector 20 and the barrier member 12.

In the present embodiment, the first support piece 15 is provided at the first opening 121, and the first support piece 15, the first compressible member 13, and the electrical connection member 20 collectively close the first opening 121. The second support tab 16 is disposed at the second opening 122, and the second support tab 16, the second compressible member 14, and the electrical connector 20 collectively close the second opening 122. The electrical connector 20 fits within the first and second openings 121 and 122 at the bottom of the first and second openings 121 and 122, and the first and second compressible members 13 and 14 seal the gap between the electrical connector 20 and the barrier member 12 at the bottom of the first and second openings 121 and 122. The first supporting piece 15 and the second supporting piece 16 are respectively installed at the first opening 121 and the second opening 122, the first supporting piece 15 and the second supporting piece 16 are located above the electric connecting piece 20, the first supporting piece 15 and the second supporting piece 16 are connected with two ends of the blocking piece 12 along the width direction B of the electric connecting piece 20, the first compressible piece 13 and the second compressible piece 14 are connected with the blocking piece 12 along the width direction B of the electric connecting piece 20 and used for sealing gaps between the first supporting piece 15 and the second supporting piece 16 and the blocking piece 12, so that the blocking piece 12, the first compressible piece 13, the first supporting piece 15, the second compressible piece 14 and the second supporting piece 16 jointly define the sealing cavity 11, the first sealing glue 112 can be prevented from being lost from the circumference of the sealing cavity 11 when the first sealing glue 112 is filled, and the first sealing glue 112 can be better filled in the sealing cavity 11 to prevent heat from diffusing.

Therefore, through the arrangement of the first compressible element 13, the second compressible element 14, the first supporting piece 15 and the second supporting piece 16, the electric connection piece 20 and the blocking piece 12 can form a seal, the tightness of the formed sealing cavity 11 is ensured, the electric connection piece 20 in the sealing cavity 11 is conveniently and effectively prevented from losing when the first sealing glue 112 is injected into the sealing cavity 11, the electric connection piece 20 in the sealing cavity 11 is sealed, the impact of high-temperature gas on the second battery unit 40 when the first battery unit 30 is in thermal runaway is avoided, the thermal diffusion range when the thermal runaway is controlled, the protection of the battery assembly 100 can be increased, and the use safety of the battery assembly 100 is improved.

Alternatively, referring to fig. 4 to 6, the first compressible member 13 includes a first side 131 and two second sides 132, the first side 131 is connected between the same ends of the two second sides 132, the first side 131 is connected to the bottom wall of the first opening 121, the two second sides 132 are respectively connected to two side walls of the first opening 121, the bottom surface of the electrical connector 20 is abutted to the first side 131, two sides of the electrical connector 20 in the width direction B are abutted to the two second sides 132, and the first supporting piece 15 is abutted to the top surface of the electrical connector 20. That is, the two second sides 132 are respectively connected with the two side walls of the first opening 121, the first side 131 is connected with the bottom wall of the first opening 121, the electrical connector 20 is stopped downward from the first opening 121 on the first side 131, and at least the second sides 132 are pressed in the width direction B of the electrical connector 20, so that the electrical connector 20 can be better mounted on the barrier member 12. The first supporting piece 15 abuts against the electric connector 20 at a side of the electric connector 20 away from the first side 131. Similarly, the second compressible element 14 includes a third side 141 and two fourth sides 142, the third side 141 is connected between the same ends of the two fourth sides 142, the third side 141 is connected to the bottom wall of the second opening 122, the two fourth sides 142 are respectively connected to two side walls of the second opening 122, the bottom surface of the electrical connector 20 is abutted to the third side 141, two sides of the electrical connector 20 in the width direction B are abutted to the two fourth sides 142, and the second supporting piece 16 is abutted to the top surface of the electrical connector 20.

Thus, the first side 131 and the second side 132 are arranged to connect the first compressible member 13 to the first opening 121 at the bottom wall and the side wall of the first opening 121, and seal the gap between the first support piece 15 and the first opening 121, and between the electrical connector 20 and the first opening 121. Meanwhile, the third side 141 and the fourth side 142 may connect the second compressible member 14 with the second opening 122 at the bottom wall and the side wall of the second opening 122, seal the gap between the second support piece 16 and the second opening 122, and between the electrical connection member 20 and the second opening 122, improve the tightness of the sealing cavity 11, and effectively isolate the first battery cell 30 and the second battery cell 40.

In some embodiments, as shown in fig. 6, the width of the second side 132 increases gradually from the free end of the second side 132 toward the end of the second side 132 connected to the first side 131, and the width of the fourth side 142 increases gradually from the free end of the fourth side 142 toward the end of the fourth side 142 connected to the third side 141. Since the first and second compressible members 13, 14 are identical in construction, the first and third sides 131, 141 are opposed, and the second and fourth sides 132, 142 are opposed, the first and second sides 131, 132 included in the first compressible member 13 are illustrated herein as examples. The two second sides 132 are respectively connected to two ends of the first side 131 and are located on the same side of the first side 131, and in a direction in which the second sides 132 face the first side 131, a distance between two adjacent second sides 132 is gradually reduced, and a width of the second sides 132 in a width direction B of the electrical connector 20 is gradually increased. Thus, the second side 132 and the fourth side 142 with gradually increased widths can increase the structural strength of the first compressible member 13 and the second compressible member 14, increase the reliability of the connection between the second side 132 and the first side 131 and the connection between the fourth side 142 and the third side 141, and facilitate the stopping of the compressible member by the electrical connector 20, so that the connection between the electrical connector 20 and the barrier member 12 has better tightness

In some embodiments, as shown in fig. 2, the first support tab 15 is connected to one side surface of the two second side edges 132 adjacent to the center of the sealed cavity 11, and the second support tab 16 is connected to one side surface of the two fourth side edges 142 adjacent to the center of the sealed cavity 11. During installation of the barrier device 10, the first and second compressible members 13, 14 are bonded to the barrier member 12, the electrical connector 20 is mated to the barrier member 12, and the first and second support tabs 15, 16 are respectively disposed on a side of the electrical connector 20 remote from the barrier member 12, wherein the first support tab 15 is bonded to the first compressible member 13 on a side surface of the first compressible member 13 adjacent the seal cavity 11, and the second support tab 16 is bonded to the second compressible member 14 on a side surface of the second compressible member 14 adjacent the seal cavity 11. Thus, by connecting one side surfaces of the first support piece 15 and the second side 132 and connecting one side surface of the second support piece 16 and the fourth side 142, the mounting of the first support piece 15 and the second support piece 16, the stability of the mounting of Tian Gong, and the assembly efficiency of the support piece and the compressible member can be facilitated.

In some embodiments, referring to fig. 4, the barrier device 10 further comprises: the second sealing glue 17 and the third sealing glue 18, wherein the second sealing glue 17 is arranged between the first supporting sheet 15 and the electric connecting piece 20 to seal a gap between the first supporting sheet 15 and the electric connecting piece 20, and the third sealing glue 18 is arranged between the second supporting sheet 16 and the electric connecting piece 20 to seal a gap between the second supporting sheet 16 and the electric connecting piece 20. After the first supporting piece 15 and the second supporting piece 16 are connected with the first compressible piece 13 and the second compressible piece 14, the first supporting piece 15 and the second supporting piece 16 are respectively abutted against the electric connecting piece 20, and gaps formed between the supporting pieces and the electric connecting piece 20 are sealed by arranging the second sealant 17 and the third sealant 18, so that the first sealant 112 is prevented from losing from the gaps when the first sealant 112 is filled into the sealing cavity 11, and the sealing performance of the sealing cavity 11 is further improved.

In some embodiments, the second and third sealants 17 and 18 are structural adhesives. The structural adhesive has the characteristics of high strength, corrosion resistance, fatigue resistance and stable performance, can better realize the sealing of the gap between the supporting sheet and the electric connecting piece 20, has good sealing effect and has good service life.

In some embodiments, as shown in fig. 2 and 4, the electrical connector 20 includes: the first electric connector 21, the second electric connector 22, the one end of first electric connector 21 is connected with the electric core of first battery cell 30 electricity, and the other end of first electric connector 21 stretches into sealed chamber 11, and the one end of second electric connector 22 is connected with the electric core of second battery cell 40 electricity, and the other end of second electric connector 22 stretches into sealed chamber 11 and overlaps with the other end of first electric connector 21 in order to realize electric connection. The battery cells of the first battery unit 30 and the second battery unit 40 are respectively provided with a first bracket and a second bracket, the battery cells of the first bracket and the first battery unit 30 are provided with pole posts which are clamped and connected, one end of the first electric connecting piece 21 is matched with the first bracket in a clamping way, and after the first electric connecting piece 21 is welded with the battery cells, the first electric connecting piece 21 is electrically connected with the battery cells. The first electrical connector 21 has a first bending section extending in a direction of the length direction a of the electrical connector 20 from the first battery cell 30 towards the second battery cell 40, the first bending section being arranged adjacent to the bottom wall of the first opening 121, the first side 131 being arranged between the first bending section and the barrier 12. The second bracket is clamped with a pole of the battery cell of the second battery unit 40, and after one end of the second electric connecting piece 22 is assembled with the second bracket, the second electric connecting piece 22 and the battery cell are welded to realize electric connection of the second electric connecting piece 22 and the battery cell. The second electrical connector 22 has a second bending section extending along the length direction a of the electrical connector 20 such that the battery cell extends in a direction towards the first battery cell 30, the second bending section being disposed adjacent to the bottom wall of the second opening 122, and the third side 141 being disposed between the second bending section and the barrier 12.

Therefore, the first electrical connector 21 and the second electrical connector 22 can facilitate communication between the first battery unit 30 and the second battery unit 40, so that the electrical connector 20 can be better matched in the sealing cavity 11, and the sealing of the first sealant 112 to the electrical connector 20 is facilitated. At the same time, the reliability of the connection between the first battery cell 30 and the second battery cell 40 is improved, and the utilization of the space within the sealed cavity 11 is increased.

In some embodiments, referring to fig. 4 and 7, a support boss 123 is provided in the barrier device 10, the support boss 123 being located in the sealed cavity 11, and the other end of the first electrical connector 21 and the other end of the second electrical connector 22 being supported on the support boss 123. Therefore, the supporting boss 123 can support the first electrical connector 21 and the second electrical connector 22, so that the connection tightness between the first electrical connector 21 and the second electrical connector 22 is facilitated, the use of the first sealant 112 is reduced, and the cost is reduced.

In some embodiments, as shown in fig. 2 and 7, the first electrical connector 21 has a first connection hole 211 formed at the other end thereof, the second electrical connector 22 has a second connection hole 221 formed at the other end thereof, and the support boss 123 has a relief hole 1231 formed thereon, the relief hole 1231 being opposite to both the first connection hole 211 and the second connection hole 221. When the first electric connector 21 and the second electric connector 22 are abutted against the supporting boss 123, fasteners are arranged in the first connecting hole 211 and the second connecting hole 221, so that the fasteners penetrate through the first electric connector 21 and the second electric connector 22 to realize fastening connection of the first electric connector 21 and the second electric connector 22. The fastener passes through the first and second connection holes 211 and 221 and then extends into the escape hole 1231. From this, the setting of first connecting hole 211 and second connecting hole 221, the connection of first electric connector 21 and second electric connector 22 of being convenient for, dodge the setting of hole 1231 and be convenient for connect the setting of the fastener of first electric connector 21 and second electric connector 22, increase the protection to supporting boss 123, avoid producing the interference to the installation of fastener, improve the reliability that first, second electric connector 22 connects.

In some embodiments, as shown in fig. 1 and 2, the blocking device 10 further includes a blocking beam 50, the blocking beam 50 is disposed between the first battery cell 30 and the second battery cell 40, the blocking member 12 is supported on the blocking beam 50, and the blocking member 12 is located at an end of the blocking beam 50 along the width direction B of the electrical connector 20, the blocking beam 50 is disposed on a tray 60 of the battery pack, and here, the blocking beam 50 is disposed between the two battery cells, taking the first battery cell 30 and the second battery cell 40 disposed at intervals along the length direction a of the electrical connector 20 as an example. When the battery assembly 100 is installed, the first and second battery units 40 and the blocking device 10 are arranged on the reversible fixture, the two battery units and the electric connector 20 are assembled on the tray 60 in a reverse buckling manner, and the reversible fixture is turned over after the fixed connection is formed by welding at the corresponding positions. The glue injection port 111 is formed on one side of the blocking member 12 away from the partition beam 50, and after the blocking member is turned over, the first sealant 112 is injected from the glue injection port 111 to seal the sealing cavity 11. Thus, the provision of the partition beam 50 can increase the insulation effect between the first and second battery cells 40, improve the structural strength of the battery assembly 100, and facilitate the formation of the support for the barrier 12.

In some embodiments, barrier member 12 is a plastic member, first compressible member 13 and second compressible member 14 are insulating foam members, and first support sheet 15 and second support sheet 16 are insulating sheets. Therefore, the weight of the battery assembly 100 can be reduced by the barrier member 12 being a plastic member, the sealing effect of the sealing cavity 11 can be increased by the compressible member being an insulating foam member, and the occurrence of the short circuit of the electric connector 20 caused by the electric connection between the first battery unit 30 and the second battery unit 40 through the compressible member is avoided, the insulating effect of the barrier device 10 can be increased by the supporting sheet being an insulating sheet, and the possibility of heat diffusion during thermal runaway is reduced.

In some embodiments, the first sealant 112 is a potting adhesive. That is, the first sealant 112 is a polymer insulating material that can be cured at normal temperature or under heated conditions, and can be used in a liquid state to fully fill the sealing cavity 11, so that the barrier device 10 has good insulating properties, the safety of using the battery assembly 100 when thermal runaway occurs inside is improved, and the possibility of thermal diffusion is reduced.

In some embodiments, the battery assembly 100 further includes: the tray, top cap, one side of tray is opened, and first cell 30, second cell 40, electric connector 20 and separation device 10 are located in the tray, and the open one side of tray is located to the top cap, and the top cap is connected with the tray, and the top cap is connected with separation device 10, and two isolation chamber 70 are separated jointly to top cap and separation device 10. Therefore, the tray and the top cover define a closed space, the blocking device 10 divides the closed space into two isolation cavities 70 in the tray 60, and the first battery unit 30 and the second battery unit 80 are respectively arranged in the two isolation cavities 70, so that the mutual influence of the two battery units in thermal runaway can be effectively blocked, and the use safety of the battery assembly 100 is improved.

A powered device according to an embodiment of the second aspect of the present utility model includes the battery assembly 100 in the above-described embodiment. The electric equipment can be an energy storage system, an electric automobile and the like, and the battery assembly 100 is used for supplying power to an electric device in the electric automobile or forming the energy storage system for supplying power to the outside.

According to the electric equipment provided by the embodiment of the utility model, the blocking device 10 and the pouring sealant arranged on the blocking device 10 are arranged between two adjacent battery units in the battery assembly 100, so that the blocking device 10 can well isolate the influence between the first battery unit 30 and the second battery unit 40, the influence on the other battery unit in case of thermal runaway is reduced, the flow of high-temperature gas or electrolyte between the two battery units is effectively blocked, the aggravation of thermal diffusion is avoided, and the use safety of the battery assembly 100 and the electric equipment is improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "height", "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 simplify 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 utility model, a "first feature" or "second feature" may include one or more of such features. In the description of the present utility model, "plurality" means two or more. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

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 (17)

1. A battery assembly, comprising:

the battery comprises a first battery unit and a second battery unit, wherein the first battery unit and the second battery unit comprise electric cores;

an electrical connection member electrically connected between the first battery cell and the second battery cell;

and the blocking device is used for separating the battery assembly into at least two isolation cavities, and the first battery unit and the second battery unit are respectively arranged in the two isolation cavities.

2. The battery assembly of claim 1, wherein the barrier defines a sealed cavity therein, the portion of the electrical connector being located within the sealed cavity, the sealed cavity being filled with a first sealant to seal the portion of the electrical connector.

3. The battery assembly of claim 2, wherein the barrier means comprises:

the side of the blocking piece facing the first battery unit is provided with a first opening, the side of the blocking piece facing the second battery unit is provided with a second opening, two ends of the electric connecting piece respectively penetrate through the first opening and the second opening to be electrically connected with the first battery unit and the second battery unit, and the blocking piece is provided with a glue injection opening;

the first supporting piece is arranged at the first opening, and the first supporting piece and the electric connecting piece jointly close the first opening;

the second supporting piece is arranged at the second opening, the second supporting piece and the electric connecting piece jointly seal the second opening,

the barrier, the first support sheet, and the second support sheet collectively define the sealed cavity.

4. The battery assembly of claim 3, further comprising:

a first compressible member disposed on an inner wall of the first opening, the first compressible member abutting between the electrical connector and a sidewall of the first opening to seal a gap between the electrical connector and the sidewall of the first opening;

a second compressible member disposed on an inner wall of the second opening, the second compressible member abutting between the electrical connector and a sidewall of the second opening to seal a gap between the electrical connector and the sidewall of the second opening,

the barrier, the first compressible member, the first support tab, the second compressible member, and the second support tab collectively define the sealed cavity.

5. The battery pack according to claim 4, wherein the first compressible member includes a first side and two second sides, the first side being connected between the same ends of the two second sides, the first side being connected to the bottom wall of the first opening, the two second sides being connected to the two side walls of the first opening, respectively, the bottom surface of the electrical connector being in abutment with the first side, the two sides in the width direction of the electrical connector being in abutment with the two second sides, the first support piece being in abutment with the top surface of the electrical connector;

the second compressible member comprises a third side and two fourth sides, wherein the third side is connected between the same ends of the two fourth sides, the third side is connected with the bottom wall of the second opening, the two fourth sides are respectively connected with the two side walls of the second opening, the bottom surface of the electric connecting member is in butt joint with the third side, the two sides of the width direction of the electric connecting member are in butt joint with the two fourth sides, and the second supporting piece is in butt joint with the top surface of the electric connecting member.

6. The battery assembly of claim 5, wherein the width of the second side increases gradually from the free end of the second side toward the end of the second side that is connected to the first side;

the width of the fourth side edge gradually increases from the free end of the fourth side edge toward the end of the fourth side edge connected with the third side edge.

7. The battery assembly of claim 5, wherein the first support tab is attached to a side surface of both of the second side edges adjacent the center of the sealed cavity;

the second supporting piece is connected with one side surface of the two fourth side edges, which is adjacent to the center of the sealing cavity.

8. The battery assembly of claim 3, wherein the barrier device further comprises:

the second sealant is arranged between the first supporting sheet and the electric connecting piece so as to seal a gap between the first supporting sheet and the electric connecting piece;

and the third sealant is arranged between the second supporting sheet and the electric connecting piece so as to seal a gap between the second supporting sheet and the electric connecting piece.

9. The battery assembly of claim 8, wherein the second and third sealants are structural adhesives.

10. The battery assembly of claim 3, wherein the electrical connector comprises:

one end of the first electric connecting piece is electrically connected with the electric core of the first battery unit, and the other end of the first electric connecting piece stretches into the sealing cavity;

and one end of the second electric connecting piece is electrically connected with the electric core of the second battery unit, and the other end of the second electric connecting piece stretches into the sealing cavity and is overlapped with the other end of the first electric connecting piece to realize electric connection.

11. The battery assembly of claim 10, wherein a support boss is provided in the blocking device, the support boss being located in the sealed cavity, the other end of the first electrical connector and the other end of the second electrical connector being supported on the support boss.

12. The battery pack according to claim 11, wherein the other end of the first electrical connector is formed with a first connection hole, and the other end of the second electrical connector is formed with a second connection hole;

the support boss is provided with an avoidance hole, and the avoidance hole is opposite to the first connecting hole and the second connecting hole.

13. A battery assembly according to claim 3, wherein the barrier means comprises: the partition beam is arranged between the first battery unit and the second battery unit;

the blocking piece is supported on the partition beam, and the glue injection port is formed on one side, far away from the partition beam, of the blocking piece.

14. The battery assembly of claim 4, wherein the barrier is a plastic piece, the first compressible piece and the second compressible piece are insulating foam pieces, and the first support sheet and the second support sheet are insulating sheets.

15. The battery assembly of any one of claims 2-14, wherein the first sealant is a potting adhesive.

16. The battery assembly of claim 15, further comprising:

the tray is opened at one side, and the first battery unit, the second battery unit, the electric connector and the blocking device are arranged in the tray;

the top cover is arranged on one open side of the tray and connected with the tray, the top cover is connected with the blocking device, and the top cover and the blocking device jointly separate the two isolation cavities.

17. A powered device comprising a battery assembly according to any one of claims 1-16.