Information acquisition assembly and battery pack

Abstract

The utility model provides an information acquisition assembly and a battery pack, the information acquisition assembly comprises two conducting bars and at least one acquisition wire harness, the two conducting bars are oppositely arranged and are used for electrically connecting a plurality of battery cells, the at least one acquisition wire harness is used for acquiring information of the plurality of battery cells, each acquisition wire harness comprises a main body wire harness, each main body wire harness is positioned on one side, far away from the other conducting bar, of the corresponding conducting bar; the limitation of a narrow space between adjacent conducting bars is reduced, and wiring and fixing of a main body wire harness are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, specifically to an information acquisition component and a battery pack. Background Technology

[0002] In related technologies, the information acquisition component has multiple acquisition harnesses for acquiring information from multiple battery cells. When the size of the information acquisition component is small, the main harness in the acquisition harness is set between adjacent conductive bars. The main harness will be affected by the narrow space between adjacent conductive bars, making it inconvenient for wiring and fixing.

[0003] Therefore, the information acquisition components in related technologies suffer from technical problems such as the inconvenience of wiring and fixing the main wiring harness. Utility Model Content

[0004] The embodiments of this utility model provide an information acquisition component and a battery pack, which can improve the technical problem in the prior art where the main wiring harness of the information acquisition component is inconvenient for wiring and fixing.

[0005] In a first aspect, embodiments of the present invention provide an information acquisition component, comprising:

[0006] Two conductive busbars, arranged opposite each other and used for electrically connecting multiple battery cells; and

[0007] At least one acquisition harness is used to acquire information from multiple said battery cells, and each acquisition harness includes a main harness.

[0008] Each of the main wire harnesses is located on the side of the corresponding conductive busbar that is away from the other conductive busbar.

[0009] In one embodiment, each of the conductive busbars includes a plurality of conductive units, each conductive unit includes a first portion for electrically connecting to the corresponding battery cell; the information acquisition component further includes at least one temperature sensor, each temperature sensor for detecting the temperature information of the corresponding battery cell; wherein each temperature sensor is disposed between the corresponding first portion and the corresponding main body harness.

[0010] In one embodiment, the conductive unit further includes a second portion connected to the side of the corresponding first portion near the corresponding main wire harness; wherein the temperature sensor is mounted on the second portion.

[0011] In one embodiment, the thickness of the second portion is less than the thickness of the first portion, and the absolute value of the difference between the thickness of the second portion and the thickness of the first portion is greater than 0 and less than or equal to 1 mm.

[0012] In one embodiment, in a direction perpendicular to the extension direction of the main wire harness and the thickness direction of the second portion, the width of the second portion is greater than the width of the temperature sensor, and the absolute value of the width difference is less than or equal to 0.5 mm.

[0013] In one embodiment, the acquisition harness further includes at least one temperature-sensing branch harness connected to the main harness, each of the temperature-sensing branch harnesses being connected between the corresponding temperature sensor and the corresponding main harness, wherein the temperature-sensing branch harness is located on the side of the corresponding first portion closer to the corresponding main harness.

[0014] In one embodiment, the conductive unit includes two first portions and two second portions, the two second portions being spaced apart and having first holes formed therein, and the temperature-sensing branch wire harness being located in the corresponding first holes.

[0015] In one embodiment, the conductive unit further includes a third portion located on the side of one of the first portions away from the other first portion, the third portion being spaced apart from the adjacent second portion and having a second hole formed therein, the temperature-sensing branch wire harness being located in the corresponding second hole.

[0016] In one embodiment, the acquisition harness further includes at least one signal branch harness, with each signal branch harness having its two ends electrically connected to the main harness and the third part, respectively. The signal branch harness includes a first segment and a second segment connected to each other, the first segment being arranged parallel to the main harness and the second segment being arranged perpendicular to the main harness.

[0017] Secondly, embodiments of the present invention provide a battery pack including an information acquisition component as described in any of the above embodiments.

[0018] The beneficial effects of the embodiments of this utility model are as follows:

[0019] In the embodiments of this utility model, by setting the main wire harness on the side of the conductive bar away from the other conductive bar, the limitation of the narrow space between adjacent conductive bars is reduced, which facilitates the wiring and fixing of the main wire harness and alleviates the technical problem of the main wire harness being inconvenient to wire and fix in the information acquisition component in the prior art. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the information acquisition component provided in an embodiment of this utility model;

[0022] Figure 2 This is an enlarged schematic diagram of the first region in the information acquisition component provided in an embodiment of this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0024] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words indicate two or more unless otherwise expressly specified.

[0025] Please see Figure 1 and Figure 2 The information acquisition component 1 provided in the embodiment of this utility model includes two conductive bars 3 and at least one acquisition wire harness 2. The two conductive bars 3 are arranged opposite each other and are used to electrically connect multiple battery cells. The at least one acquisition wire harness 2 is used to acquire information from multiple battery cells. Each acquisition wire harness 2 includes a main wire harness 21, wherein each main wire harness 21 is located on the side of the corresponding conductive bar 3 away from the other conductive bar 3.

[0026] The main wiring harness 21 extends along the long side of the information acquisition component 1.

[0027] It is understandable that, due to the limited space between two adjacent conductive bars 3, it is inconvenient to lay and fix the main wire harness 21 when it is placed between the two conductive bars 3; by placing the main wire harness 21 on the side of the conductive bar 3 away from the other conductive bar 3, it is convenient to lay and fix the main wire harness 21.

[0028] In this embodiment, by placing the main wire harness 21 on the side of the conductive busbar 3 away from the other conductive busbar 3, the limitation of the narrow space between adjacent conductive busbars 3 is reduced, which facilitates the wiring and fixing of the main wire harness 21.

[0029] The technical solution of this application will now be described in conjunction with specific embodiments.

[0030] In one embodiment, please refer to Figure 1 Each conductive busbar 3 includes multiple conductive units 31, and each conductive unit 31 includes a first part 301, which is used to electrically connect to the corresponding battery cell; the information acquisition component 1 also includes at least one temperature sensor 4, and each temperature sensor 4 is used to detect the temperature information of the corresponding battery cell; wherein, each temperature sensor 4 is disposed between the corresponding first part 301 and the corresponding main body harness 21.

[0031] Among them, adjacent conductive units 31 of adjacent conductive bars 3 are electrically connected through battery cells.

[0032] Among them, the temperature sensor 4 is directly or indirectly thermally connected to the battery cell.

[0033] Among them, the temperature sensing branch harness 5 can be provided on the conductive unit 31 in fewer ways, or the temperature sensing branch harness 5 can be not provided on the conductive unit 31.

[0034] Among them, the temperature sensing branch harness 5 can be provided on the conductive unit 31 in fewer ways, or the temperature sensing branch harness 5 can be not provided on the conductive unit 31.

[0035] It is understandable that the temperature sensor 4 is located between the first part 301 and the main wiring harness 21 so that the temperature sensing branch wiring harness 5 can be directly connected to the temperature sensor 4. Compared with the prior art where a conductive unit 31 is provided between the main wiring harness 21 and the temperature sensor 4, the temperature sensing branch wiring harness 5 in this application does not need to run from the conductive unit 31, which alleviates the problem of the temperature sensing branch wiring harness 5 aging due to heat caused by the heat generated by the conductive unit 31.

[0036] In this embodiment, by placing the temperature sensor 4 between the first part 301 and the main wiring harness 21, the main wiring harness 21 can be directly connected to the temperature sensor 4 through the temperature sensing branch wiring harness 5, thereby reducing the impact of the temperature sensing branch wiring harness 5 being heated by the conductive unit 31 and reducing the damage to the temperature sensing branch wiring harness 5.

[0037] In one embodiment, please refer to Figure 2 The conductive unit 31 also includes a second part 302, which is connected to the side of the corresponding first part 301 near the corresponding main body wire harness 21; wherein the temperature sensor 4 is mounted on the second part 302.

[0038] The temperature sensor 4 is used as an interface for connecting to the temperature-sensing branch harness 5. It can be flush with the edge of the second part 302 in the thickness direction to reduce the contact between the temperature-sensing branch harness 5 and the conductive unit 31 and avoid damage to the temperature-sensing branch harness 5 due to heat.

[0039] The signal acquisition component also includes a support 9, a conductive busbar 3 and a acquisition harness 2, which are mounted on the support 9, and the battery cell is located on the side of the support 9 away from the conductive busbar 3.

[0040] The support component 9 may also include adhesive material, and the battery cell and the conductive busbar 3 are bonded together by the adhesive material.

[0041] It is understandable that, in addition to mounting the temperature sensor 4 on the second part 302, the temperature sensor 4 can also be directly placed on the surface of the battery cell, or the temperature sensor 4 can be placed on the support member 9 and then indirectly connected to the battery cell through the heat-conducting component.

[0042] In this embodiment, the temperature sensor 4 is mounted on the second part 302, which is located closer to the main wiring harness 21 than the first part 301, so that the main wiring harness 21 and the temperature sensor 4 can be connected through the temperature-sensing branch wiring harness 5.

[0043] In one embodiment, please refer to Figure 2 , Figure 2 for Figure 1 An enlarged schematic diagram of the first region 10 shows that the thickness of the second part 302 is less than the thickness of the first part 301, and the absolute value of the difference between the thickness of the second part 302 and the thickness of the first part 301 is greater than 0 and less than or equal to 1 mm.

[0044] The absolute value of the difference between the thickness of the second part 302 and the thickness of the first part 301 is greater than or equal to 0.2 and less than or equal to 1 mm.

[0045] The absolute value of the difference between the thickness of the second part 302 and the thickness of the first part 301 can be any one of 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, or 1 mm.

[0046] The information acquisition component 1 also includes thermally conductive adhesive, the thickness of which is greater than or equal to the thickness of the temperature sensor 4, and the thermally conductive adhesive at least covers the temperature sensor 4.

[0047] When the absolute value of the difference between the thickness of the second part 302 and the thickness of the first part 301 is greater than 1 mm, since the thickness of the second part 302 is reduced by cutting grooves, the groove depth is too large, which can easily lead to insufficient current carrying capacity of the conductive unit 31.

[0048] Understandably, the groove can also be used to fix the temperature sensor 4.

[0049] It should be noted that since the thickness of the first part 301 is less than that of the second part 302, when the temperature sensor 4 is placed on the second part 302, and when the top surface of the temperature sensor 4 is lower than or flush with the top surface of the first part 301, the thermal conductive adhesive only needs to be placed in the groove of the second part 302. This saves the amount of thermal conductive adhesive without affecting the heat dissipation of the temperature sensor 4.

[0050] It is worth noting that when the height of the temperature sensor 4 is higher than the height of the top surface of the first part 301, the thermal conductive adhesive still needs to cover at least the top surface of the first part 301. However, the thickness of the thermal conductive adhesive on the top surface of the first part 301 is less than the thickness of the thermal conductive adhesive on the top surface of the second part 302. Therefore, the amount of thermal conductive adhesive used is saved.

[0051] In this embodiment, by making the absolute value of the difference between the thickness of the second part 302 and the thickness of the first part 301 greater than 0 and less than or equal to 1 mm, on the one hand, insufficient current carrying capacity of the conductive unit 31 can be avoided, and on the other hand, the amount of thermally conductive adhesive can be saved to reduce costs.

[0052] In one embodiment, the conductive unit 31 may be an aluminum busbar.

[0053] In one embodiment, in a direction perpendicular to the extension direction of the main wire harness 21 and the thickness direction of the second portion 302, the width of the second portion 302 is greater than the width of the temperature sensor 4, and the absolute value of the width difference is less than or equal to 0.5 mm.

[0054] The absolute value of the difference between the width of the second part 302 and the width of the main wire harness 21 can be any one of 0.1 mm, 0.3 mm, or 0.5 mm.

[0055] It is understandable that when the absolute value of the difference between the width of the second part 302 and the width of the main wire harness 21 is greater than 0.5 mm, it will lead to waste of thermal conductive adhesive and will also affect the current carrying capacity of the conductive unit 31.

[0056] In this embodiment, the absolute value of the difference between the width of the second part 302 and the width of the main wire harness 21 is less than or equal to 0.5 mm, thus avoiding waste of thermal conductive adhesive.

[0057] In one embodiment, the acquisition harness 2 further includes at least one temperature-sensing branch harness 5 connected to the main harness 21. Each temperature-sensing branch harness 5 is connected between the corresponding temperature sensor 4 and the corresponding main harness 21, wherein the temperature-sensing branch harness 5 is located on the side of the corresponding first part 301 closer to the corresponding main harness 21.

[0058] It is understandable that the temperature-sensing branch harness 5 is located on the side of the corresponding first part 301 that is close to the corresponding main body harness 21, which can reduce the contact area between the temperature-sensing branch harness 5 and the conductive unit 31 and prevent the temperature-sensing branch harness 5 from being damaged by heat.

[0059] In one embodiment, please refer to Figure 2 The conductive unit 31 includes two first parts 301 and two second parts 302. The two second parts 302 are arranged at intervals and have first holes 7. The temperature sensing branch wire harness 5 is located in the corresponding first hole 7.

[0060] An arch bridge portion 304 is provided between adjacent first portions 301. The arch bridge portion 304 is offset from the first hole 7 to avoid contact between the temperature sensing branch harness 5 and the arch bridge portion 304.

[0061] It is understandable that by providing a first hole 7 on the conductive unit 31 to accommodate the temperature sensing branch wire harness 5, the temperature sensing branch wire harness 5 is prevented from needing to be wound from the conductive unit 31, thereby preventing the temperature sensing branch wire harness 5 from aging due to the heat generated by the conductive unit 31.

[0062] In one embodiment, please refer to Figure 2 The conductive unit 31 also includes a third part 303, which is located on the side of one of the first parts 301 away from the other first part 301. The third part 303 and the adjacent second part 302 are spaced apart and a second hole 8 is formed therein. The temperature sensing branch wire harness 5 is located in the corresponding second hole 8.

[0063] The third part 303 is used for electrical connection with the signal branch harness 22.

[0064] Understandably, the second hole 8 is provided to accommodate the temperature-sensing branch harness 5, thus preventing the temperature-sensing branch harness 5 from aging due to heat generated by the conductive unit 31.

[0065] In one embodiment, the acquisition harness 2 further includes at least one signal branch harness 22, with both ends of each signal branch harness 22 electrically connected to the main harness 21 and the third part 303, respectively. The signal branch harness 22 includes a first segment and a second segment connected to each other. The first segment is arranged parallel to the main harness 21, and the second segment is arranged perpendicular to the main harness 21.

[0066] Understandably, compared to the existing technology where the signal branch harness 22 is set in a straight line, which is easily pulled and broken during the thermal expansion of the battery cell, setting the signal branch harness 22 into two segments in a zigzag shape allows for more harness slack, as the connection point between the conductive unit 31 and the main harness 21 is fixed, and the sum of the lengths of the first and second segments is greater than the length of the straight signal branch line. Therefore, setting the signal branch harness 22 into a first segment and a second end provides more harness slack, preventing the signal branch harness 22 from being pulled and broken.

[0067] In this embodiment, the signal branch harness 22 is configured as a first segment and a second segment connected together, so that the signal branch harness 22 will have more harness slack to avoid breakage of the signal branch harness 22.

[0068] In one embodiment, the information acquisition component 1 further includes a copper sleeve region 6, which is located in the first part 301, and the temperature sensor 4 is offset from the copper sleeve region 6.

[0069] It is understandable that placing the temperature sensor 4 on the second part 302, so that the temperature sensor 4 is staggered from the copper sleeve area 6, can avoid interference between the temperature sensor 4 and the copper sleeve area 6.

[0070] In one embodiment, by increasing the length of the wiring harness connecting the information acquisition component 1 and the power management component, and by placing the acquisition wiring harness 2 on the side of the conductive busbar 3 away from the other conductive busbar 3, an electrical connection between the information acquisition component 1 and the power management component can be achieved.

[0071] Secondly, the battery pack provided in the embodiments of this utility model includes an information acquisition component 1 as described in any of the above embodiments.

[0072] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An information acquisition component (1), characterized in that, include: Two conductive busbars (3) are arranged opposite each other and used to electrically connect multiple battery cells; as well as At least one acquisition harness (2) is used to acquire information of multiple said cells, and each acquisition harness includes a main harness (21). Each of the main wire harnesses is located on the side of the corresponding conductive busbar that is away from the other conductive busbar.

2. The information acquisition component (1) according to claim 1, characterized in that, Each of the conductive busbars includes multiple conductive units (31), each conductive unit (31) includes a first part (301), the first part (301) is used to electrically connect to the corresponding battery cell; the information acquisition component (1) also includes at least one temperature sensor (4), each temperature sensor (4) is used to detect the temperature information of the corresponding battery cell; wherein, each temperature sensor (4) is disposed between the corresponding first part (301) and the corresponding main wire harness (21).

3. The information acquisition component (1) according to claim 2, characterized in that, The conductive unit (31) further includes a second part (302), which is connected to the side of the corresponding first part (301) near the corresponding main wire harness (21); wherein the temperature sensor (4) is mounted on the second part (302).

4. The information acquisition component (1) according to claim 3, characterized in that, The thickness of the second part (302) is less than the thickness of the first part (301), and the absolute value of the difference between the thickness of the second part (302) and the thickness of the first part (301) is greater than 0 and less than or equal to 1 mm.

5. The information acquisition component (1) according to claim 3, characterized in that, In a direction perpendicular to the extension direction of the main wire harness (21) and the thickness direction of the second part (302), the width of the second part (302) is greater than the width of the temperature sensor (4), and the absolute value of the width difference is less than or equal to 0.5 mm.

6. The information acquisition component (1) according to claim 3, characterized in that, The acquisition harness (2) further includes at least one temperature-sensing branch harness (5) connected to the main harness (21). Each temperature-sensing branch harness (5) is connected between the corresponding temperature sensor (4) and the corresponding main harness (21), wherein the temperature-sensing branch harness (5) is located on the side of the corresponding first part (301) closer to the corresponding main harness (21).

7. The information acquisition component (1) according to claim 6, characterized in that, The conductive unit (31) includes two first portions (301) and two second portions (302), the two second portions (302) are spaced apart and have first holes (7), and the temperature-sensing branch wire harness (5) is located in the corresponding first hole (7).

8. The information acquisition component (1) according to claim 7, characterized in that, The conductive unit (31) further includes a third part (303), which is located on the side of one of the first parts (301) away from the other first part (301). The third part (303) is spaced apart from the adjacent second part (302) and has a second hole (8). The temperature sensing branch wire harness (5) is located in the corresponding second hole (8).

9. The information acquisition component (1) according to claim 8, characterized in that, The acquisition harness (2) further includes at least one signal branch harness (22), and the two ends of each signal branch harness (22) are electrically connected to the main harness (21) and the third part (303), respectively. The signal branch harness (22) includes a first segment and a second segment connected to each other. The first segment is arranged parallel to the main harness (21), and the second segment is arranged perpendicular to the main harness (21).

10. A battery pack, characterized in that, Includes the information acquisition component (1) as described in any one of claims 1 to 9.

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