Battery pack and electric equipment with same

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack and electric equipment with the battery pack, and the battery pack comprises a box body with an opening; the cover plate is connected with the box body and covers the opening, and a containing cavity is defined by the cover plate and the box body; the battery pack is arranged in the accommodating cavity, the battery pack comprises a plurality of batteries, and each battery comprises a top cover; the isolation plate is arranged between the battery pack and the cover plate, the isolation plate comprises a first mounting part and a pressing piece assembly, the first mounting part is provided with a hollowed-out opening, at least part of the top cover is exposed out of the hollowed-out opening, the pressing piece assembly is connected with the first mounting part, and the projection of the pressing piece assembly is located in the range of the hollowed-out opening; and the information acquisition assembly is arranged between the battery pack and the isolation plate and comprises a temperature acquisition part, and the temperature acquisition part is located between the tabletting assembly and the top cover. According to the battery pack disclosed by the utility model, the temperature acquisition part is tightly pressed through the pressing sheet assembly, the position of the temperature acquisition part is fixed, the vibration probability of the temperature acquisition part is reduced, and the reliability of an acquisition result is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a battery pack and an electrical device having the same. Background Technology

[0002] In related technologies, battery packs typically include batteries and flexible printed circuit boards (FPCs). The FPCs are equipped with devices such as temperature sensors to collect temperature information from the batteries. However, due to the low rigidity of the FPCs, they are not easy to fix and are prone to vibration. This causes the temperature sensors to vibrate relative to the batteries, affecting the reliability of the temperature information. Utility Model Content

[0003] In view of this, the present invention provides a battery pack to solve the problems of poor temperature acquisition unit fixation and easy vibration in the information acquisition component.

[0004] In a first aspect, this utility model provides a battery pack, comprising: a housing having an opening; a cover plate connected to the housing and sealing the opening, the cover plate and the housing forming a receiving cavity; a battery pack disposed within the receiving cavity, the battery pack including a plurality of batteries, each battery including a top cover; a separator plate disposed between the battery pack and the cover plate, the separator plate including a first mounting portion and a pressing assembly, the first mounting portion having a perforation along a first direction, at least a portion of the top cover protruding from the perforation, the pressing assembly being connected to the first mounting portion, and at least a portion of the projection of the pressing assembly being located within the perforation in the first direction; and an information acquisition component disposed between the battery pack and the separator plate, the information acquisition component including a temperature acquisition portion, the temperature acquisition portion being located between the pressing assembly and the top cover in the first direction, the temperature acquisition portion being disposed on the top cover and abutting against the pressing assembly.

[0005] Beneficial effects: Positioning the information acquisition component between the separator and the battery pack provides two advantages. First, the closer proximity of the component to the battery pack facilitates temperature measurement by the temperature acquisition unit. Second, the separator applies pressure to the component, fixing its position and reducing vibration probability, thus further stabilizing the temperature acquisition unit. Additionally, the pressure plate assembly further secures the relative position between the temperature acquisition unit and the top cover, further reducing vibration and improving temperature measurement accuracy.

[0006] In one optional embodiment, the pressing assembly includes: a pressing sheet connected to the first mounting portion, wherein at least a portion of the projection of the pressing sheet is located within the area of ​​the cutout; and an elastic member, wherein the temperature sensing portion and the pressing sheet clamp the elastic member in the first direction.

[0007] Beneficial effects: On the one hand, it can avoid hard contact between the temperature sensing part and the pressure plate, reducing the probability of the pressure plate damaging the temperature sensing part. On the other hand, the elastic element can undergo elastic deformation to adapt to the gap between the temperature sensing part and the pressure plate, thereby pressing the temperature sensing part tightly against the top cover.

[0008] In one alternative embodiment, the side of the pressure plate facing the elastic member is configured as a plane, and the elastic member abuts against the side of the pressure plate facing the elastic member.

[0009] Beneficial effects: The tableting process is convenient and it is also beneficial to adjust the relative position between the elastic element and the tablet.

[0010] In one alternative embodiment, the battery pack further includes an adhesive member disposed between the elastic member and the pressure plate, wherein the elastic member and the pressure plate are bonded together by the adhesive member.

[0011] Beneficial effects: Improves the connection strength between the elastic element and the pressure plate, preventing misalignment between the elastic element and the pressure plate due to shaking.

[0012] In one alternative embodiment, the top cover has an insulating element on the side facing the isolation plate, the insulating element has a window area, the top cover protrudes from the window area, and the temperature acquisition unit is located in the window.

[0013] Beneficial effects: By setting up a window area, the temperature acquisition unit can directly contact the top cover. The top cover is usually made of metal, which has good heat conduction and can improve the accuracy of temperature acquisition.

[0014] In one alternative embodiment, the battery further includes a terminal post connected to the top cover, an insulating member surrounding the terminal post, the terminal post being located at the edge of the top cover, and the opening being located at the center of the top cover.

[0015] Beneficial effects: Increases the distance between the temperature acquisition unit and the electrode, reduces the probability of interference between the temperature acquisition unit and the electrode, and improves the ease of layout.

[0016] In one optional embodiment, there are multiple first mounting portions, and the isolation plate further includes multiple second mounting portions, with the multiple first mounting portions and multiple second mounting portions arranged alternately, and the first mounting portion connected to its adjacent second mounting portion; the battery further includes a terminal post, which is connected to the top cover, and the information acquisition component further includes an electrical signal acquisition unit, which is located between the second mounting portion and the battery and connected to the terminal post.

[0017] Beneficial effects: The electrical signal acquisition unit collects electrical signals such as battery voltage and current, and the second mounting unit presses the electrical signal acquisition unit firmly onto the battery, which is beneficial to the accuracy of electrical signal information.

[0018] In one alternative embodiment, the tablet press and the first mounting portion are integrated into a single structure.

[0019] Beneficial effects: The connection strength between the tablet press and the first mounting part is high, and production efficiency is improved.

[0020] Secondly, this utility model provides an electrical device, including the battery pack described in the first aspect.

[0021] Beneficial effects: The electrical equipment of this utility model, using the battery pack described in the first aspect, can reduce the probability of vibration of the temperature acquisition unit and improve the accuracy of temperature acquisition. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the battery pack according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram showing the connection between the battery pack and the separator in an embodiment of the present invention;

[0026] Figure 4 for Figure 3 A partial schematic diagram of region A in the middle;

[0027] Figure 5 This is a cross-sectional view of the battery pack and separator plate according to an embodiment of the present utility model;

[0028] Figure 6 for Figure 5 A partial schematic diagram of region B in the middle;

[0029] Figure 7 This is an exploded view of the battery pack, separator, and information acquisition component according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the battery structure according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the information collection component according to an embodiment of the present utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Battery pack;

[0034] 100. Box body; 101. Receiving cavity; 102. Cover plate; 103. Opening;

[0035] 200. Battery pack; 210. Battery; 211. Terminal post; 212. Top cover; 213. Window area; 214. Insulating component;

[0036] 300, isolation plate; 310, first mounting part; 311, perforation; 320, second mounting part; 330, pressing plate; 340, elastic element; 350, pressing plate assembly;

[0037] 400. Information acquisition component; 401. Temperature acquisition unit; 402. Electrical signal acquisition unit. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In the description of this utility model, "a plurality of" means two or more. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The following is combined with Figures 1-9 The embodiments of the present invention are described below.

[0043] According to an embodiment of the present invention, in a first aspect, a battery pack 1 is provided, the battery pack 1 including a housing 100, a cover plate 102, a battery pack 200, an isolation plate 300, and an information acquisition component 400.

[0044] The housing 100 has an opening 103. A cover plate 102 is connected to the housing 100 and seals the opening 103. The cover plate 102 and the housing 100 enclose a receiving cavity 101. A battery pack 200 is disposed within the receiving cavity 101. The battery pack 200 includes multiple batteries 210, and each battery 210 includes a top cover 212. A separator plate 300 is disposed between the battery pack 200 and the cover plate 102. The separator plate 300 includes a first mounting portion 310 and a pressing assembly 350. The first mounting portion 310 has a cutout 311 along a first direction. At least a portion of the top cover 212 protrudes from the cutout 311. The pressing assembly 350 is connected to the first mounting portion 310. In the first direction, at least a portion of the projection of the pressing assembly 350 is located within the area of ​​the cutout 311. The information acquisition component 400 is located between the battery pack 200 and the separator 300. The information acquisition component 400 includes a temperature acquisition part 401, which is located between the pressing plate 330 and the top cover 212 in a first direction. The temperature acquisition part 401 is located on the top cover 212 and abuts against the pressing plate assembly 350.

[0045] The first direction is the height direction of the housing 100 or the battery pack 200; the cutout 311 can be circular, elliptical or rectangular, or irregular in shape. It is understood that it is only necessary to allow at least a part of the top cover 212 to be exposed therein, so that the temperature acquisition unit 401 can be placed between the pressing assembly 350 and the top cover 212.

[0046] Specifically, the separator 300 can be made of insulating material, such as insulating plastic. The separator 300 can separate the battery pack 200 from the cover plate 102, preventing electrical connection between them, reducing the probability of the cover plate 102 becoming charged, and improving the safety of the battery pack 1. The information acquisition component 400 may include a flexible circuit board and a temperature sensor. The temperature sensor is mounted on the flexible circuit board and is used to acquire temperature information of the battery pack 200. The temperature sensor is part of the temperature acquisition unit.

[0047] By providing a perforation 311 in the first mounting part 310, the weight of the isolation plate 300 can be reduced, the cost can be lowered, and the contact between the temperature acquisition part 401 and the top cover 212 can be facilitated. The top cover 212 is usually made of metal material, so the thermal conductivity of the top cover 212 is relatively good. Contacting the temperature acquisition part 401 with the top cover 212 helps to improve the reliability of temperature detection of the battery 210.

[0048] Positioning the information acquisition component 400 between the isolation plate 300 and the battery pack 200 serves two purposes: firstly, the closer proximity of the information acquisition component 400 to the battery 210 facilitates the temperature acquisition unit 401 in acquiring the temperature of the battery 210; secondly, the isolation plate 300 applies pressure to the information acquisition component 400, fixing the relative position of the information acquisition component 400 and the battery 210, reducing the probability of vibration of the information acquisition component 400, and thus fixing the position of the temperature acquisition unit 401. Furthermore, the pressure plate assembly 350 fixes the relative position between the temperature acquisition unit 401 and the top cover 212, further reducing the probability of vibration of the temperature acquisition unit 401 and improving the accuracy of temperature acquisition.

[0049] like Figure 4 and Figure 6 As shown, in this embodiment, the pressing assembly 350 includes a pressing sheet 330 and an elastic member 340. The pressing sheet 330 is connected to the first mounting portion 310, and at least a portion of the projection of the pressing sheet 330 is located within the area of ​​the cutout 311. The elastic member 340 is disposed between the temperature sensing portion 401 and the pressing sheet 330, specifically, the elastic member 340 is clamped between the temperature sensing portion 401 and the pressing sheet 330. The elastic member 340 can be foam, silicone, or rubber.

[0050] By providing the elastic element 340, on the one hand, hard contact between the temperature acquisition part 401 and the pressure plate 330 can be avoided, reducing the probability that the pressure plate 330 will damage the temperature acquisition part 401. On the other hand, the elastic element 340 can undergo elastic deformation to adapt to the gap between the temperature acquisition part 401 and the pressure plate 330, thereby pressing the temperature acquisition part 401 tightly against the top cover 212.

[0051] Furthermore, the elastic element 340 can be made of heat-insulating material. This reduces the heat exchange efficiency between the temperature acquisition unit 401 and the pressure plate 330, limits the heat dissipation efficiency of the temperature acquisition unit 401, and improves the reliability of the data acquired by the temperature acquisition unit 401.

[0052] Furthermore, the elastic element 340 can be made of an insulating material. This reduces the probability of the temperature sensing part 401 becoming conductive with other structures, thus improving the safety of the battery pack 1.

[0053] In some embodiments, a groove may be formed on the side of the pressure plate 330 facing the elastic member 340 to accommodate the elastic member 340, wherein the groove may be formed by a recess in the pressure plate 330 facing the elastic member 340. For example... Figure 4 and Figure 6As shown, in a preferred embodiment of this example, the side of the pressure plate 330 facing the elastic member 340 is constructed as a plane, and the elastic member 340 and the side of the pressure plate 330 facing the elastic member 340 abut against each other. The side of the pressure plate 330 facing away from the elastic member 340 can also be constructed as a plane. This makes the pressure plate 330 easier to process and facilitates adjustment of the relative position between the elastic member 340 and the pressure plate 330.

[0054] In this embodiment, the battery pack 1 further includes an adhesive (not shown in the figure), which is disposed between the elastic member 340 and the pressure plate 330, and the elastic member 340 and the pressure plate 330 are bonded together by the adhesive. The adhesive can be structural adhesive, double-sided adhesive, thermally conductive adhesive, etc.

[0055] This improves the connection strength between the elastic element 340 and the pressure plate 330, preventing misalignment between the elastic element 340 and the pressure plate 330 due to shaking during the assembly or handling of the battery pack 1, and making it less likely for the temperature acquisition unit 401 to shift.

[0056] In this embodiment, the pressing plate 330 and the first mounting part 310 are integrated into a single structure. This results in a high connection strength between the pressing plate 330 and the first mounting part 310, reducing the probability of damage to the isolation plate 300. Furthermore, the pressing plate 330 and the first mounting part 310 can be formed in a single process, improving production efficiency.

[0057] like Figure 4 and Figure 8 As shown, the top cover 212 has an insulating component 214 on the side facing the isolation plate 300. The insulating component 214 has a window area 213. The top cover 212 is exposed from the window area 213. The temperature acquisition unit 401 is located in the window area 213 to contact the top cover 212.

[0058] By providing the insulating component 214, the probability of electrical connection between the top cover 212 and the cover plate 102 can be reduced, thereby improving the safety of the battery pack 1. By providing the window area 213, the temperature acquisition unit 401 can directly contact the top cover 212. The top cover 212 is usually a metal part, for example, the top cover 212 is made of copper. The thermal conductivity between the temperature acquisition unit 401 and the top cover 212 is good, which can improve the accuracy of temperature data acquisition.

[0059] Furthermore, the battery 210 also includes a terminal post 211, which is connected to the top cover 212. An insulating member 214 surrounds the terminal post 211. The terminal post 211 is located at the edge of the top cover 212, and the window area 213 is located in the middle of the top cover 212. That is to say, the temperature acquisition unit 401 is located in the middle of the top cover 212.

[0060] Since the pole post 211 is close to the edge of the top cover 212, by placing the temperature acquisition unit 401 in the middle of the top cover 212, the distance between the temperature acquisition unit 401 and the pole post 211 can be increased, the probability of interference between the temperature acquisition unit 401 and the pole post 211 can be reduced, and the convenience of arranging the temperature acquisition unit 401 can be improved.

[0061] like Figure 3 , Figures 7-9 As shown, in this embodiment, there are multiple first mounting portions 310, and the isolation plate 300 also includes multiple second mounting portions 320. The multiple first mounting portions 310 and multiple second mounting portions 320 are arranged alternately, and the first mounting portion 310 is connected to its adjacent second mounting portion 320. The battery 210 also includes a terminal post 211, which is connected to the top cover 212. The information acquisition component 400 also includes an electrical signal acquisition unit 402, which is located between the second mounting portions 320 and the battery 210 and is connected to the terminal post 211.

[0062] Since the electrical signal acquisition unit 402 is connected to the terminal 211, the electrical signal acquisition unit 402 can acquire electrical signals such as voltage and current of the battery 210. Furthermore, the second mounting part 320 presses the electrical signal acquisition unit 402 firmly onto the battery 210, which can prevent the electrical signal acquisition unit 402 from shaking relative to the battery 210. This helps to ensure the reliability of the connection between the electrical signal acquisition unit 402 and the terminal 211, thereby improving the accuracy of electrical signal acquisition.

[0063] According to an embodiment of the present invention, in a second aspect, an electrical device is provided, which includes the aforementioned battery pack 1. The electrical device can be a vehicle or an energy storage cabinet, etc.

[0064] The electrical device of this invention, by utilizing the aforementioned battery pack 1, can reduce the probability of vibration in the temperature acquisition unit 401 and improve the accuracy of temperature acquisition.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery pack, characterized in that, include: The box (100) has an opening (103); A cover plate (102) is connected to the box body (100) and covers the opening (103). The cover plate (102) and the box body (100) together form a receiving cavity (101). A battery pack (200) is disposed within the receiving cavity (101), the battery pack (200) includes a plurality of batteries (210), and each battery (210) includes a top cover (212); An isolation plate (300) is disposed between the battery pack (200) and the cover plate (102). The isolation plate (300) includes a first mounting part (310) and a pressing assembly (350). The first mounting part (310) has a cutout (311) along a first direction. At least a portion of the top cover (212) is exposed through the cutout (311). The pressing assembly (350) is connected to the first mounting part (310). In the first direction, at least a portion of the projection of the pressing assembly (350) is located within the range of the cutout (311). An information acquisition component (400) is disposed between the battery pack (200) and the separator plate (300). The information acquisition component (400) includes a temperature acquisition unit (401) for acquiring temperature information of the battery (210). The temperature acquisition unit (401) is located between the pressing assembly (350) and the top cover (212) in the first direction. The temperature acquisition unit (401) is disposed on the top cover (212) and abuts against the pressing assembly (350).

2. The battery pack according to claim 1, characterized in that, The tablet compression assembly (350) includes: A pressure plate (330) is connected to the first mounting part (310), and at least a portion of the projection of the pressure plate (330) is located within the area of ​​the cutout (311); The elastic element (340) is held by the temperature sensing part (401) and the pressure plate (330) in the first direction.

3. The battery pack according to claim 2, characterized in that, The side of the pressure plate (330) facing the elastic member (340) is constructed as a plane, and the elastic member (340) and the side of the pressure plate (330) facing the elastic member (340) abut against each other.

4. The battery pack according to claim 3, characterized in that, Also includes: An adhesive element is disposed between the elastic element (340) and the pressure plate (330), and the elastic element (340) and the pressure plate (330) are bonded together by the adhesive element.

5. The battery pack according to claim 1, characterized in that, The top cover (212) has an insulating element (214) on the side facing the isolation plate (300). The insulating element (214) has a window area (213). The top cover (212) protrudes from the window area (213). The temperature acquisition unit (401) is located in the window area (213).

6. The battery pack according to claim 5, characterized in that, The temperature acquisition unit (401) is attached to the portion of the top cover (212) that is exposed from the window area (213).

7. The battery pack according to claim 6, characterized in that, The battery (210) also includes a terminal post (211) connected to the top cover (212), an insulating member (214) surrounding the terminal post (211), the terminal post (211) being located at the edge of the top cover (212), and the window area (213) being located in the middle of the top cover (212).

8. The battery pack according to any one of claims 1-7, characterized in that, There are multiple first mounting portions (310), and the isolation plate (300) also includes multiple second mounting portions (320). The multiple first mounting portions (310) and the multiple second mounting portions (320) are arranged alternately, and the first mounting portion (310) is connected to its adjacent second mounting portion (320). The battery (210) further includes a terminal post (211) connected to the top cover (212). The information acquisition component (400) further includes an electrical signal acquisition unit (402) located between the second mounting part (320) and the battery (210) and connected to the terminal post (211).

9. The battery pack according to any one of claims 2-4, characterized in that, The tablet (330) is integrated with the first mounting part (310) into a single structure.

10. An electrical appliance, characterized in that, Includes the battery pack (1) according to any one of claims 1-9.

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