Convergence assembly, battery and energy storage device

Abstract

The utility model relates to the field of batteries, and provides a bus assembly, a battery and an energy storage device. The confluence assembly comprises a confluence piece, a temperature detection device, a shell, an elastic piece, a pressing piece and a positioning pin. The confluence piece is used for being in contact with a battery cell, the temperature detection device is arranged on the back face of the portion, in contact with the battery cell, of the confluence piece, the shell covers the outer side of the temperature detection device, and the pressing piece abuts against the side, away from the confluence piece, of the shell through the elastic piece. And the elastic piece is connected with the shell and / or the elastic piece is connected with the pressing piece through the positioning pin. The positioning effect is achieved between the elastic piece and the shell and between the elastic piece and the pressing piece through the positioning pins, displacement of the elastic piece relative to the shell or the pressing piece is avoided, and the stability of the elastic piece is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a current collector assembly, a battery and an energy storage device. Background Art

[0002] With the rapid development of new energy vehicles, the design and development technology of battery packs is also constantly updated and improved. Inside the battery pack, the voltage and problem collection of multi-module battery cells can be better realized through the busbar assembly.

[0003] In the related art, the busbar assembly usually includes a busbar, a temperature sensor, a shell, foam and a pressing piece. The busbar can be set as a flexible printed circuit (FPC), the temperature sensor is set on the FPC and is against the battery cell through the FPC to detect the temperature information of the battery cell, and the shell cover is set on the outside of the temperature sensor. The pressing piece is against the shell through the foam, and the FPC is pressed against the battery cell through the shell, so that the FPC can maintain a certain pressure between the battery cell and ensure the temperature conduction effect.

[0004] The position of the FPC used to install the temperature sensor usually needs to be bent, and deformation is likely to occur during the bending stress release process. In addition, the foam is bonded to the shell and the clamping piece respectively. Therefore, when the FPC is deformed, it is easy to cause the connection between the foam and the shell or between the foam and the clamping piece to be disconnected, eventually causing the foam to separate from the shell or the clamping piece, affecting temperature collection. Utility Model Content

[0005] The utility model provides a current collector component, a battery and an energy storage device, which are used to solve or improve the defect in the related art that the foam and the shell or the foam and the pressing member are easily disconnected when the current collector is deformed.

[0006] On the one hand, the utility model provides a busbar assembly, including a busbar, a temperature detection device, a housing, an elastic member, a pressing member and a positioning pin;

[0007] Wherein, the busbar is used to contact the battery cell, the temperature detection device is arranged on the back side of the part of the busbar that contacts the battery cell, the shell cover is arranged on the outside of the temperature detection device, the clamping piece is abutted against the side of the shell away from the busbar through the elastic piece, and the elastic piece and the shell and / or the elastic piece and the clamping piece are connected by the positioning pin.

[0008] According to a busbar assembly provided by the utility model, the number of the positioning pins is set to at least two.

[0009] According to a confluence assembly provided by the utility model, a slot for inserting the elastic member is provided on a side of the pressing member facing the elastic member.

[0010] According to a busbar assembly provided by the utility model, it also includes a metal plate, and the metal plate is connected to the part of the busbar that contacts the battery core.

[0011] According to a busbar assembly provided by the utility model, the busbar component includes a main body, a bending section and an installation section, one end of the bending section is connected to the main body, the other end of the bending section is inclined toward the direction close to the battery cell and connected to the installation section, the installation section is used to contact the battery cell, and the temperature detection device is arranged on the back side of the contact part between the installation section and the battery cell.

[0012] According to a confluence assembly provided by the utility model, an opening is provided on a side of the shell close to the elastic member, and the elastic member blocks the opening.

[0013] According to a confluence assembly provided by the utility model, the elastic member is respectively bonded and connected to the pressing member and the shell.

[0014] According to a busbar assembly provided by the utility model, the shell is bonded and connected to the busbar.

[0015] On the other hand, the utility model further provides a battery, comprising the above-mentioned busbar assembly.

[0016] On the other hand, the utility model also provides an energy storage device, comprising the battery as described above.

[0017] The busbar assembly provided by the utility model is provided with a temperature detection device on the back of the part where the busbar contacts the battery core, so that the temperature detection device can obtain the temperature information of the battery core. By providing the shell cover on the outside of the temperature detection device, the temperature detection device can be protected. The pressing piece is abutted against the side of the shell away from the busbar through the elastic piece, so that the busbar and the battery core can maintain good contact, thereby ensuring the temperature conduction effect.

[0018] By arranging positioning pins between the elastic member and the shell and / or between the elastic member and the pressing member, a positioning effect can be formed between the elastic member and the shell and between the elastic member and the pressing member through the positioning pins, thereby avoiding displacement of the elastic member relative to the shell or the pressing member, ensuring the stability of the elastic member, and improving the problem in the related art that the connection between the foam and the shell or between the foam and the pressing member is easily disconnected when the busbar is deformed.

[0019] The battery and energy storage device provided by the utility model include the busbar assembly of the utility model, and thus include all the above advantages of the busbar assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present utility model or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a confluence assembly provided by an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A partial enlarged view of position Ⅰ in the view shown;

[0023] Figure 3 It is a structural schematic diagram of a pressing member provided in an embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the relative position relationship between the temperature detection device and the housing provided in the embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the installation state of the confluence assembly provided by the embodiment of the utility model;

[0026] Figure 6 yes Figure 5 A local enlarged view of point II in the view shown.

[0027] Reference numerals:

[0028] 1. Busbar; 101. Main body; 102. Bending section; 103. Mounting section; 2. Temperature detection device; 3. Shell; 4. Elastic member; 5. Pressing member; 501. Slot; 6. Positioning pin; 7. Bracket. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Combine the following Figure 1-Figure 6 The confluence assembly provided in the embodiment of the utility model is described.

[0031] Specifically, the busbar assembly includes a busbar 1 , a temperature detection device 2 , a housing 3 , an elastic member 4 , a pressing member 5 and a positioning pin 6 .

[0032] The busbar 1 is used to contact the battery cell. When installed, the busbar 1 is usually installed on the bracket 7. The temperature detection device 2 is arranged on the back of the contact part of the busbar 1 and the battery cell. Optionally, the temperature detection device 2 can be set as a temperature sensor. Optionally, the busbar 1 is set as an FPC.

[0033] The housing 3 is covered on the outside of the temperature detection device 2, and the pressing member 5 is against the side of the housing 3 away from the current collector 1 through the elastic member 4, that is, the elastic member 4 is arranged between the pressing member 5 and the housing 3. Optionally, the pressing member 5 can be connected to the bracket 7 of the current collector 1. Optionally, the elastic member 4 is set to foam, silicone or rubber. Optionally, the housing 3 is set to glass fiber reinforced epoxy resin composite material.

[0034] The elastic member 4 and the housing 3 and / or the elastic member 4 and the pressing member 5 are connected via a positioning pin 6 .

[0035] The busbar assembly provided in the embodiment of the utility model is provided on the back of the part of the busbar 1 that contacts the battery cell through the temperature detection device 2. The temperature of the battery cell can be transmitted to the temperature detection device 2 through the busbar 1, so that the temperature detection device 2 can obtain the temperature information of the battery cell. By setting the shell 3 cover on the outside of the temperature detection device 2, the temperature detection device 2 can be protected. The pressing member 5 is against the side of the shell 3 facing away from the busbar 1 through the elastic member 4, that is, the pressing member 5 presses the busbar 1 through the elastic member 4, which can keep the busbar 1 in good contact with the battery cell, thereby ensuring the temperature conduction effect.

[0036] By providing a positioning pin 6 between the elastic member 4 and the shell 3 and / or between the elastic member 4 and the pressing member 5, a positioning effect can be formed between the elastic member 4 and the shell 3 and between the elastic member 4 and the pressing member 5 through the positioning pin 6, thereby avoiding displacement of the elastic member 4 relative to the shell 3 or the pressing member 5, ensuring the stability of the elastic member 4, and improving the problem in the related art that the bonding between the foam and the shell 3 or between the foam and the pressing member 5 is easily disconnected when the collector 1 is deformed.

[0037] In some embodiments provided by the utility model, the positioning pin 6 is connected to the clamping member 5, for example, the positioning pin 6 is connected to the clamping member 5 by bonding, threading, interference fit or an integral structure. The elastic member 4 is provided with a through hole for the positioning pin 6 to pass through, and the housing 3 is provided with a positioning hole for the positioning pin 6 to be inserted. In this embodiment, in the process of clamping the collector 1 by the clamping member 5, the positioning pin 6 can simultaneously pass through the elastic member 4 and be placed in the positioning hole of the housing 3, so that the installation is more convenient. The positioning pin 6 passes through the elastic member 4, and the two ends of the positioning pin 6 are respectively connected to the clamping member 5 and the housing 3, so that the positioning pin 6 can position the elastic member 4 between the clamping member 5 and the housing 3, so that the elastic member 4 will neither shift relative to the housing 3 nor shift relative to the clamping member 5.

[0038] In some embodiments provided by the present invention, the number of the positioning pins 6 is set to at least two. By providing at least two positioning pins 6, the elastic member 4 is positioned, which can prevent the elastic member 4 from moving between the pressing member 5 and the housing 3, and can also prevent the elastic member 4 from rotating between the pressing member 5 and the housing 3, thereby further improving the stability of the elastic member 4.

[0039] In some embodiments provided by the utility model, a clamping groove 501 for inserting the elastic member 4 is provided on the side of the pressing member 5 facing the elastic member 4. In this embodiment, by providing the clamping groove 501 on the pressing member 5, a limiting effect can be formed on the elastic member 4 to prevent the elastic member 4 from shifting relative to the pressing member 5, thereby ensuring the stability of the position of the elastic member 4 relative to the pressing member 5.

[0040] In some embodiments provided by the present invention, the busbar assembly further includes a metal plate, which is connected to the portion where the busbar 1 contacts the battery cell, that is, the busbar 1 contacts the battery cell through the metal plate. The metal plate is provided at the portion where the busbar 1 contacts the battery cell. On the one hand, the structural strength of the busbar 1 can be improved to avoid deformation of the busbar 1 when it is overheated. On the other hand, the metal plate has good thermal conductivity and can better transfer the heat of the battery cell to the busbar.

[0041] refer to Figure 6 As shown, in some embodiments provided by the present invention, the busbar 1 includes a main body 101 , a bending section 102 and a mounting section 103 .

[0042] The main body 101 is used to be connected to the bracket 7, one end of the bending section 102 is connected to the main body 101, and the other end of the bending section 102 is inclined toward the direction close to the battery cell and connected to the mounting section 103. The mounting section 103 is used to contact the battery cell, and the temperature detection device 2 is arranged on the back of the portion of the mounting section 103 that contacts the battery cell.

[0043] In this embodiment, since the battery cell is usually provided with a window, the inclined bending section 102 is provided to facilitate the installation section 103 to be placed in the window of the battery cell, so that the temperature detection device 2 can be placed in the window to detect the temperature of the battery cell.

[0044] refer to Figure 4 As shown, in some embodiments provided by the utility model, an opening is provided on one side of the housing 3 close to the elastic member 4, and the elastic member 4 blocks the opening. In this embodiment, the opening is provided to facilitate detection, repair or replacement of the temperature detection device 2. By blocking the opening with the elastic member 4, the elastic member 4 can be protected.

[0045] In some embodiments provided by the present invention, the elastic member 4 is respectively bonded to the pressing member 5 and the housing 3. In this embodiment, by bonding the elastic member 4 to the pressing member 5 and the housing 3, respectively, through bonding and the cooperation of the positioning pin 6, double protection can be formed, thereby improving the fixing effect of the elastic member 4.

[0046] In some embodiments provided by the present invention, the housing 3 is bonded to the current collector 1. This arrangement facilitates installation and fixation of the housing 3.

[0047] A battery is also provided in an embodiment of the utility model.

[0048] Specifically, the battery includes the busbar assembly described above.

[0049] It should be noted that the battery includes a busbar assembly, and also includes all the above advantages of the busbar assembly, which will not be elaborated on.

[0050] An energy storage device is also provided in an embodiment of the utility model.

[0051] Specifically, the energy storage device includes the battery as described above.

[0052] It should be noted that the energy storage device includes a battery, and also includes all the above advantages of the battery, which will not be described in detail. For example, the energy storage device can be a vehicle or other movable or immovable energy storage station.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A confluence component, It is characterized in that It comprises a current collector (1), a temperature detection device (2), a housing (3), an elastic member (4), a pressing member (5) and a positioning pin (6); The busbar (1) is used to contact the battery cell, the temperature detection device (2) is arranged on the back of the part of the busbar (1) that contacts the battery cell, the shell (3) is arranged on the outside of the temperature detection device (2), the pressing member (5) is abutted against the side of the shell (3) facing away from the busbar (1) through the elastic member (4), and the elastic member (4) and the shell (3) and / or the elastic member (4) and the pressing member (5) are connected via the positioning pin (6).

2. The busbar assembly according to claim 1, It is characterized in that The number of the positioning pins (6) is set to at least two.

3. The busbar assembly according to claim 1, It is characterized in that A slot (501) for inserting the elastic member (4) is provided on one side of the pressing member (5) facing the elastic member (4).

4. The busbar assembly according to claim 1 or 3, It is characterized in that It also comprises a metal plate, wherein the metal plate is connected to the portion of the busbar (1) that contacts the battery core.

5. The busbar assembly according to claim 1, It is characterized in that The busbar (1) comprises a main body (101), a bent section (102) and a mounting section (103); one end of the bent section (102) is connected to the main body (101); the other end of the bent section (102) is inclined in a direction close to the battery cell and connected to the mounting section (103); the mounting section (103) is used to contact the battery cell; and the temperature detection device (2) is arranged on the back side of the portion of the mounting section (103) that contacts the battery cell.

6. The busbar assembly according to claim 1 or 5, It is characterized in that An opening is provided on one side of the housing (3) close to the elastic member (4), and the elastic member (4) blocks the opening.

7. The busbar assembly according to claim 1 or 5, It is characterized in that The elastic member (4) is respectively bonded to the pressing member (5) and the housing (3).

8. The busbar assembly according to claim 1 or 5, It is characterized in that The housing (3) is bonded to the current collector (1).

9. A battery, It is characterized in that It comprises a busbar assembly as described in any one of claims 1 to 8.

10. An energy storage device, It is characterized in that Comprising the battery as claimed in claim 9.

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