Battery parameter acquisition assembly, battery module, battery pack and electric equipment

Abstract

The embodiment of the utility model discloses a battery parameter acquisition assembly, a battery module, a battery pack and electric equipment, which are used for solving the technical problem that the battery module is easy to scrap when pseudo soldering of a welding spot or abnormal circuit occurs in the existing mode of acquiring battery parameters by adopting an FPC (Flexible Printed Circuit). The embodiment of the utility model comprises an acquisition line, a battery, a busbar and a fixing screw, the battery is provided with a pole, a threaded hole is formed in the pole, a first through hole is formed in the position, corresponding to the threaded hole, of the busbar, a second through hole penetrating through the interior of the fixing screw is formed in the fixing screw, and the threaded part of the fixing screw penetrates through the through hole and then is in threaded connection with the interior of the threaded hole so that the busbar can be fixed to the pole. The collecting part of the collecting wire penetrates through the second through hole and enters the threaded hole, and the collecting part of the collecting wire is tightly pressed on the inner side bottom wall of the threaded hole by the bottom surface of the threaded part of the fixing screw.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and in particular to a battery parameter acquisition component, a battery module, a battery pack and an electrical device. Background Art

[0002] The battery parameters (such as battery temperature, battery voltage and other parameters) in the existing battery module are generally collected through the FPC component. The traditional FPC component has a variety of collection circuits inside. The collection circuit is welded and fixed to the nickel sheet of the FPC component. Then, the nickel sheet of the FPC component is welded to the battery pole and busbar to complete the assembly process of the entire battery parameter collection. If the internal circuit is broken or there is a cold solder joint between two solder joints, the relevant parameters of the battery (battery voltage, battery temperature, etc.) will not be collected, and the entire battery module will be scrapped.

[0003] Therefore, finding a technical solution that can solve the above technical problems has become an important topic studied by technical personnel in this field. Utility Model Content

[0004] The utility model discloses a battery parameter acquisition component, a battery module, a battery pack and an electrical device, which are used to solve the technical problem that the existing method of using FPC to collect battery parameters easily leads to the scrapping of the battery module when a solder joint is cold or a line is abnormal.

[0005] The embodiment of the utility model provides a battery parameter acquisition component, including an acquisition line, a battery, a bus bar and fixing screws;

[0006] The battery has a pole, a threaded hole is formed on the pole, a first through hole is formed at a position of the busbar corresponding to the threaded hole, a second through hole is formed on the fixing screw which passes through the inside thereof, a threaded portion of the fixing screw passes through the first through hole and is threadedly connected to the threaded hole so that the busbar is fixed to the pole, a collecting portion of the collecting line passes through the second through hole and enters into the threaded hole, and a bottom surface of the threaded portion of the fixing screw presses the collecting portion of the collecting line against an inner bottom wall of the threaded hole.

[0007] Optionally, the acquisition part of the acquisition line includes a temperature acquisition terminal for acquiring the battery temperature and a voltage acquisition terminal for acquiring the battery voltage.

[0008] Optionally, a fixing glue for fixing the acquisition line is injected into the second through hole.

[0009] Optionally, a gasket is also included;

[0010] A third through hole is formed at a position of the gasket corresponding to the first through hole, the gasket is arranged on the top surface of the bus bar, and the first through hole overlaps with the third through hole;

[0011] When the threaded portion of the fixing screw passes through the first through hole and the third through hole in sequence and is threadedly connected to the threaded hole, the nut of the fixing screw presses the gasket against the top surface of the busbar.

[0012] Optionally, a buffer layer is provided on the bottom surface of the threaded portion of the fixing screw.

[0013] Optionally, the buffer layer is a silicone layer or a rubber layer.

[0014] The embodiment of the utility model provides a battery module, comprising the above-mentioned battery parameter acquisition component; the battery parameter acquisition component is provided with a plurality of batteries, and the plurality of batteries are arranged in sequence;

[0015] The poles of two adjacent batteries are conductively connected via a busbar of the battery parameter acquisition component.

[0016] The embodiment of the utility model provides a battery pack, comprising a box body and the above-mentioned battery module;

[0017] The battery module is installed in the box.

[0018] An embodiment of the utility model provides an electric device, including the above-mentioned battery parameter acquisition component.

[0019] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0020] In the battery parameter acquisition assembly of this embodiment, the threaded portion of the fixing screw passes through the first through hole and is threadedly connected to the threaded hole to fix the busbar to the pole, the acquisition portion of the acquisition line passes through the second through hole and enters the threaded hole, and the bottom surface of the threaded portion of the fixing screw presses the acquisition portion of the acquisition line against the inner bottom wall of the threaded hole. Through the above design, it is possible to avoid welding problems such as cold welding, and when there is a problem with the acquisition line, the operator can directly replace the acquisition line by loosening the screw. After replacing the acquisition line, it will not affect the normal use of the entire battery module, and will not cause the battery module to be scrapped. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of a battery parameter acquisition component provided in an embodiment of the utility model;

[0023] Figure 2 An exploded diagram of a battery parameter acquisition component provided in an embodiment of the utility model;

[0024] Figure 3 A cross-sectional view of a battery parameter acquisition component provided in an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the structure of a battery module provided in an embodiment of the utility model;

[0026] Figure 5 A partial structural diagram of a battery parameter acquisition component provided in an embodiment of the utility model;

[0027] Illustration: battery 1; pole 2; threaded hole 201; busbar 3; first through hole 301; fixing screw 4; second through hole 401; collection line 5; collection part 501; temperature collection terminal 5011; voltage collection terminal 5012; gasket 6. DETAILED DESCRIPTION

[0028] The utility model discloses a battery parameter acquisition component, a battery module, a battery pack and an electrical device, which are used to solve the technical problem that the existing method of using FPC to collect battery parameters easily leads to the scrapping of the battery module when a solder joint is cold or a line is abnormal.

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 3 , a battery parameter acquisition component provided in an embodiment of the utility model includes an acquisition line 5, a battery 1, a bus bar 3 and a fixing screw 4;

[0031] The battery 1 has a pole 2, a threaded hole 201 is formed on the pole 2, a first through hole 301 is formed at a position of the bus 3 corresponding to the threaded hole 201, a second through hole 401 is formed on the fixing screw 4 and passes through the first through hole 301 and is threadedly connected to the threaded hole 201 to fix the bus 3 to the pole 2, a collecting portion 501 of the collecting line 5 passes through the second through hole 401 and enters the threaded hole 201, and the bottom surface of the threaded portion of the fixing screw 4 presses the collecting portion 501 of the collecting line 5 against the inner bottom wall of the threaded hole 201.

[0032] In the battery parameter collection assembly of this embodiment, the threaded portion of the fixing screw 4 passes through the first through hole 301 and is threadedly connected to the threaded hole 201 to fix the bus 3 to the pole 2, and the collection portion 501 of the collection line 5 passes through the second through hole 401 and enters the threaded hole 201, and the bottom surface of the threaded portion of the fixing screw 4 presses the collection portion 501 of the collection line 5 against the inner bottom wall of the threaded hole 201. Through the above design, it is possible to avoid welding problems such as cold welding, and when there is a problem with the collection line 5, the operator can directly replace the collection line 5 by loosening the screws. After replacing the collection line 5, it will not affect the normal use of the entire battery module, and will not cause the battery module to be scrapped.

[0033] In addition, the above design can effectively simplify the battery module assembly process, eliminate the traditional FPC components, and effectively reduce the production cost; the collection line 5 is directly fixed by the fixing screw 4, saving the welding cost; the collection line 5 can be routed from the outside of the battery 1 to avoid the explosion-proof valve on the battery 1, so as to avoid damage to the collection line 5 when the battery 1 expands cyclically or undergoes thermal runaway.

[0034] Furthermore, the acquisition part 501 of the acquisition line 5 in this embodiment includes a temperature acquisition terminal 5011 for acquiring the temperature of the battery 1 and a voltage acquisition terminal 5012 for acquiring the voltage of the battery 1 .

[0035] It should be noted that the collection portion 501 of the collection line 5 in this embodiment is specifically a forked structure, one of the forks is specifically the above-mentioned temperature collection end 5011, and the other fork is the above-mentioned voltage collection end 5012. The bottom surface of the threaded portion of the fixing screw 4 presses the above-mentioned temperature collection end 5011 and the voltage collection end 5012 into the threaded hole 201, so that the temperature collection end 5011 and the voltage collection end 5012 have good contact with the pole 2 of the battery 1.

[0036] Furthermore, in this embodiment, a fixing glue for fixing the collection line 5 is injected into the second through hole 401 .

[0037] It should be noted that, through the above design, the fixing glue can fix the acquisition line 5 and the fixing screw 4, thereby preventing the acquisition line 5 from loosening or displacement during the use of the battery module, thereby ensuring the stability of the battery 1 parameter acquisition.

[0038] Further, refer to Figure 5 , the battery parameter acquisition component in this embodiment also includes a gasket 6;

[0039] A third through hole is formed at a position of the gasket 6 corresponding to the first through hole 301. The gasket 6 is disposed on the top surface of the busbar 3, and the first through hole 301 overlaps with the third through hole.

[0040] When the threaded portion of the fixing screw 4 passes through the first through hole 301 and the third through hole in sequence and is threadedly connected to the threaded hole 201 , the nut of the fixing screw 4 presses the gasket 6 against the top surface of the busbar 3 .

[0041] It should be noted that, through the above design, the gasket 6 can protect the top surface of the busbar 3 and effectively prevent the nut of the fixing screw 4 from scratching the surface of the busbar 3 .

[0042] Furthermore, a buffer layer is provided on the bottom surface of the threaded portion of the fixing screw 4 in this embodiment.

[0043] It should be noted that, through the above design, the buffer layer can play a certain buffering role, which can prevent the threaded portion of the fixing screw 4 from crushing the collection portion 501 of the collection line 5.

[0044] Specifically, the buffer layer in this embodiment is preferably a silicone layer or a rubber layer.

[0045] See also Figures 1 to 4 , a battery module provided in an embodiment of the utility model comprises a plurality of batteries 1 arranged in sequence and the above-mentioned battery parameter acquisition component;

[0046] The poles 2 of two adjacent batteries 1 are conductively connected via a bus bar 3 of the battery parameter acquisition component.

[0047] It should be noted that by introducing the above-mentioned battery parameter acquisition component into the battery module, it is possible to avoid problems such as cold soldering caused by welding, and when there is a problem with the acquisition line 5, the operator can directly replace the acquisition line 5 by loosening the screws. After replacing the acquisition line 5, it has no effect on the normal use of the entire battery module, and will not cause the battery module to be scrapped.

[0048] See also Figures 1 to 5 , a battery pack provided in an embodiment of the utility model comprises a box body and the above-mentioned battery module;

[0049] The battery module is installed in the box.

[0050] It should be noted that the battery pack in this embodiment can be used in application scenarios such as new energy vehicles and energy storage equipment.

[0051] See also Figures 1 to 5 An electrical device provided in an embodiment of the utility model includes the above-mentioned battery module.

[0052] It should be noted that the electrical equipment may be new energy vehicles, energy storage equipment and other equipment that requires electrical energy to work.

[0053] The above is a detailed introduction to a battery parameter acquisition component, a battery module, a battery pack and an electrical device provided by the present invention. For a person skilled in the art, according to the idea of ​​the embodiments of the present invention, there may be changes in the specific implementation method and the scope of application. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery parameter acquisition component, characterized in that: It includes a collection line (5), a battery (1), a bus bar (3) and fixing screws (4); The battery (1) comprises a pole (2), a threaded hole (201) is formed on the pole (2), a first through hole (301) is formed on the busbar (3) at a position corresponding to the threaded hole (201), the fixing screw (4) comprises a second through hole (401) penetrating therein, the threaded portion of the fixing screw (4) passes through the first through hole (301) and is then threadedly connected to the threaded hole (201) so that the busbar (3) is fixed to the pole (2), the collecting portion (501) of the collecting wire (5) passes through the second through hole (401) and enters the threaded hole (201), and the bottom surface of the threaded portion of the fixing screw (4) presses the collecting portion (501) of the collecting wire (5) against the inner bottom wall of the threaded hole (201).

2. The battery parameter acquisition component according to claim 1, characterized in that: The acquisition part (501) of the acquisition line (5) comprises a temperature acquisition terminal (5011) for acquiring the temperature of the battery (1) and a voltage acquisition terminal (5012) for acquiring the voltage of the battery (1).

3. The battery parameter acquisition component according to claim 1, characterized in that: Fixing glue for fixing the collection line (5) is injected into the second through hole (401).

4. The battery parameter acquisition component according to claim 1, characterized in that: Also includes a gasket (6); A third through hole is provided at a position of the gasket (6) corresponding to the first through hole (301); the gasket (6) is arranged on the top surface of the busbar (3), and the first through hole (301) overlaps with the third through hole; When the threaded portion of the fixing screw (4) passes through the first through hole (301) and the third through hole in sequence and is threadedly connected to the threaded hole (201), the nut of the fixing screw (4) presses the gasket (6) against the top surface of the busbar (3).

5. The battery parameter acquisition component according to claim 1, characterized in that: The bottom surface of the threaded portion of the fixing screw (4) is provided with a buffer layer.

6. The battery parameter acquisition component according to claim 5, characterized in that: The buffer layer is a silicone layer or a rubber layer.

7. A battery module, characterized in that: Comprising the battery parameter acquisition component according to any one of claims 1 to 6; the battery parameter acquisition component is provided with a plurality of batteries (1), and the plurality of batteries (1) are arranged in sequence; The poles (2) of two adjacent batteries (1) are conductively connected via a bus bar (3) of the battery parameter acquisition component.

8. A battery pack, characterized in that: comprising a box body and a battery module as claimed in claim 7; The battery module is installed in the box.

9. An electrical device, characterized in that: It comprises the battery parameter acquisition component as described in any one of claims 1 to 6.

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