BMS mounting structure and battery pack

Abstract

The utility model belongs to the technical field of battery packs, and discloses a BMS mounting structure and a battery pack, the BMS mounting structure comprises a rubber shell, a first wiring end and a second wiring end, at least two coil mounting cavities and at least two wiring cavities are arranged in the rubber shell, the coil mounting cavities are used for mounting coils, and the wiring cavities are used for connecting the first wiring end and the second wiring end. First insulating partition plates are arranged between every two adjacent coil mounting cavities and between every two adjacent wiring cavities, the first wiring ends are arranged on the outer sides of the coil mounting cavities, the second wiring ends are arranged on the outer sides of the wiring cavities, one ends of lead wires of the coils are connected with the first wiring ends, and the other ends of lead wires of the coils are connected with the second wiring ends. The other end of the lead sequentially penetrates through the coil installation cavity and the wiring cavity to be connected with the second wiring end, the rubber shell is filled with silica gel to fix the coil and the lead, the insulation performance of the BMS installation structure is improved, and the requirement for high voltage resistance is met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a BMS installation structure and a battery pack. Background Art

[0002] The BMS battery system is also called a battery nanny or battery butler. It is mainly used to intelligently manage and maintain each battery unit, monitor the battery status, prevent the battery from overcharging and over-discharging, and extend the battery life. Most existing BMS installation structures place the coil directly in the plastic shell, fix the plastic shell and the coil with glue, and there is shaking between the plastic shell and the coil. The insulation performance is poor and cannot meet the high voltage resistance requirements. Therefore, a BMS installation structure and battery pack are urgently needed to solve the above problems. Utility Model Content

[0003] One purpose of the utility model is to:

[0004] On the one hand, a BMS installation structure is provided, in which a coil installation chamber and a wiring chamber are arranged, and the insulation performance of the BMS installation structure is increased by a first insulating partition to meet high voltage resistance requirements.

[0005] On the other hand, a battery pack is provided, comprising the above-mentioned BMS installation structure, which further improves the pressure resistance performance of the battery pack.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A BMS installation structure comprises a plastic shell, a first terminal and a second terminal. At least two coil installation chambers and at least two wiring chambers are provided in the plastic shell. The coil installation chamber is used to install a coil. A first insulating partition is provided between two adjacent coil installation chambers and between two adjacent wiring chambers. The first terminal is provided on the outside of the coil installation chamber, and the second terminal is provided on the outside of the wiring chamber. One end of the lead of the coil is connected to the first terminal, and the other end of the lead passes through the coil installation chamber and the wiring chamber in sequence to be connected to the second terminal. The plastic shell is filled with silica gel to fix the coil and the lead.

[0008] Preferably, an isolation chamber is provided between the coil installation chamber and the wiring chamber, a second insulating partition is provided between the isolation chamber and both the coil installation chamber and the wiring chamber, and the second insulating partition is provided with a clearance gap for the lead wire to pass through.

[0009] Preferably, the first insulating partition and the second insulating partition are both integrally formed with the plastic shell.

[0010] Preferably, the first wiring terminal includes a plurality of first PIN pins, the first PIN pins are inserted into the plastic shell, one end of the first PIN pin extends into the coil installation chamber, and the other end of the first PIN pin extends to the outer end of the plastic shell; and / or

[0011] The second wiring terminal includes a plurality of second PIN pins, the second PIN pins are inserted into the plastic shell, one end of the second PIN pin extends into the wiring cavity, and the other end of the second PIN pin extends to the outer end of the plastic shell.

[0012] Preferably, the plastic shell is provided with a plurality of first wiring slots, and one end of the first PIN pin extends into the first wiring slot; and / or

[0013] The plastic shell is provided with a plurality of second wiring slots, and one end of the second PIN pin extends into the second wiring slot.

[0014] Preferably, the heights of the first wiring groove and the second wiring groove are flush with the first insulating partition, and the filling height of the silica gel is flush with the first insulating partition.

[0015] Preferably, an installation mark is further provided in the plastic shell, and the installation mark is arranged in the coil installation chamber or the wiring chamber, and the installation mark is used to indicate the coil installation chamber or the wiring chamber.

[0016] Preferably, the BMS installation structure further comprises a cover shell, which is disposed on the top of the plastic shell and is connected to the plastic shell.

[0017] Preferably, the distance between the first terminal and the second terminal is not less than 30 mm.

[0018] A battery pack is provided, comprising the BMS installation structure.

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a BMS installation structure, comprising a plastic shell, a first wiring terminal and a second wiring terminal. At least two coil installation chambers and at least two wiring chambers are arranged in the plastic shell. A first insulating partition is arranged between two adjacent coil installation chambers and two adjacent wiring chambers. The coil is installed in the coil installation chamber, and the lead wire of the coil passes through the coil installation chamber and the wiring chamber in sequence to be connected with the second wiring terminal. The coil installation chamber is convenient for installing the coil on the one hand, and can improve the insulation performance of the plastic shell on the other hand to avoid contact short circuit between two adjacent coils. The wiring chamber is convenient for coil wiring and avoids short circuit between the leads touching each other, thereby avoiding coil damage. After the wiring is completed, silica gel is filled in the plastic shell to fill and cover the coil to fix the coil and the lead wire, thereby improving the insulation performance of the BMS installation structure and meeting high voltage resistance requirements.

[0021] On the other hand, the utility model provides a battery pack, including the above-mentioned BMS installation structure, to further improve the pressure resistance performance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below according to the accompanying drawings and embodiments;

[0023] Figure 1 It is a partial axonometric drawing of the BMS installation structure;

[0024] Figure 2 A partial top view of the BMS installation structure.

[0025] In the figure:

[0026] 1. Plastic shell; 11. Coil installation chamber; 12. Wiring chamber; 13. First insulating partition; 14. Isolation chamber; 15. Second insulating partition; 16. Installation mark;

[0027] 2. Coil; 21. Lead wire;

[0028] 31. First PIN pin; 32. First wiring slot;

[0029] 41. Second PIN pin; 42. Second wiring slot. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0035] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0036] like Figure 1 to Figure 2As shown, the utility model provides a BMS installation structure, including a plastic shell 1, a first wiring terminal and a second wiring terminal. A plurality of coil installation chambers 11 and a plurality of wiring chambers 12 are arranged in the plastic shell 1. A first insulating partition 13 is arranged between two adjacent coil installation chambers 11 and two adjacent wiring chambers 12. The coil installation chamber 11 is used to install the coil 2. The first wiring terminal is arranged on the outside of the coil installation chamber 11, and the second wiring terminal is arranged on the outside of the wiring chamber 12. One end of the lead 21 of the coil 2 is connected to the first wiring terminal, and the other end passes through the coil installation chamber 11 and the wiring chamber 12 in sequence to be connected to the second wiring terminal. The coil installation chamber 11 is convenient for installing the coil 2 on the one hand, and can improve the insulation performance of the plastic shell 1 on the other hand, and avoid short circuit between two adjacent coils 2. The wiring chamber 12 is convenient for wiring the coil 2, and at the same time avoids short circuit between the leads 21, thereby avoiding damage to the coil 2.

[0037] In this embodiment, the model of the BMS installation structure is TM1202SR.

[0038] During the actual installation process, the coil 2 is installed in the coil installation chamber 11, the lead 21 of the coil 2 is pulled out, one end of the lead 21 is electrically connected to the first terminal by welding, and the other end of the lead 21 passes through the coil installation chamber 11 and the wiring chamber 12 in turn, and is electrically connected to the second terminal by welding. After the wiring is completed, the rubber shell 1 is filled with silica gel to cover the coil 2 to fix the coil 2 and the lead 21 to prevent the lead 21 from shaking, strengthen the insulation isolation and withstand voltage, improve the insulation performance of the BMS installation structure, and meet the high withstand voltage requirements.

[0039] In this embodiment, the silicone is a highly insulating organic silicone, which can effectively protect the coil 2 and enhance the insulation isolation and withstand voltage.

[0040] Exemplarily, the first terminal includes a plurality of first PIN pins 31, which are inserted into the plastic shell 1, one end of the first PIN pin 31 extends into the coil installation chamber 11, and the other end extends to the outer end of the plastic shell 1, the lead 21 is welded to the inner end of the first PIN pin 31, and the outer end of the first PIN pin 31 extends out of the outer end of the plastic shell 1 for easy use of the BMS installation structure wiring. The second terminal includes a plurality of second PIN pins 41, which are inserted into the plastic shell 1, one end of the second PIN pin 41 extends into the wiring chamber 12, and the other end extends to the outer end of the plastic shell 1, the lead 21 is welded to the inner end of the second PIN pin 41, and the outer end of the second PIN pin 41 extends out of the outer end of the plastic shell 1 for easy use of the BMS installation structure wiring.

[0041] Furthermore, the plastic shell 1 is provided with a plurality of first wiring slots 32 and a plurality of second wiring slots 42. The first wiring slots 32 are arranged in one-to-one correspondence with the first PIN pins 31, and one end of the first PIN pins 31 extends into the first wiring slots 32. The second wiring slots 42 are arranged in one-to-one correspondence with the second PIN pins 41, and one end of the second PIN pins 41 extends into the second wiring slots 42. In actual operation, the lead 21 and the first PIN pins 31 are wound and then welded in the first wiring slots 32. The first wiring slots 32 are isolated from each other to avoid short circuits during welding. At the same time, the first PIN pins 31 are fixed to ensure the connection stability between the first PIN pins 31 and the lead 21. The second PIN pins 41 and the second wiring slots 42 are similar, and they are not described one by one here.

[0042] Furthermore, the height of the first wiring groove 32 and the second wiring groove 42 is flush with the first insulating partition 13, and the filling height of the silicone is flush with the first insulating partition 13, ensuring the overall flatness of the plastic shell 1. At the same time, after the silicone is fixed, it can further fix the position of the first PIN foot 31 and the second PIN foot 41 to prevent the first PIN foot 31 and the second PIN foot 41 from shaking.

[0043] Exemplarily, an isolation chamber 14 is provided between the coil installation chamber 11 and the wiring chamber 12, and a second insulating partition 15 is provided between the isolation chamber 14 and the coil installation chamber 11 and the wiring chamber 12, and the second insulating partition 15 is provided with a clearance gap for the lead 21 to pass through. The isolation chamber 14 can provide a space for placing the lead 21, and provide a sufficient creepage distance for the lead 21.

[0044] Exemplarily, the first insulating partition 13 and the second insulating partition 15 are integrally connected to the plastic shell 1, which is convenient for processing and production, improves the connection strength between the first insulating partition 13 and the second insulating partition 15 and the plastic shell 1, and avoids the first insulating partition 13 and the second insulating partition 15 and the plastic shell 1. The gap between the first insulating partition 13 and the second insulating partition 15 and the plastic shell 1 prevents the coil 2 from being scratched.

[0045] Exemplarily, an installation mark 16 is also provided in the plastic shell 1. The installation mark 16 is set in the coil installation chamber 11 or the wiring chamber 12. The installation mark 16 is used to distinguish the coil installation chamber 11 and the wiring chamber 12, which facilitates the installation and automated operation of the coil 2.

[0046] In this embodiment, the distance between the first terminal and the second terminal is not less than 30 mm, that is, the length of the plastic shell 1 should be not less than 30 mm. The overall space of the plastic shell 1 is increased, the assembly production efficiency is improved, and at the same time, damage to the coil 2 is effectively avoided, thereby improving the withstand voltage qualification rate.

[0047] Exemplarily, the BMS installation structure also includes a cover shell, which is arranged on the top of the plastic shell 1 and is connected to the plastic shell 1 to block the top opening of the plastic shell 1, thereby protecting the coil 2 and lead wire 21 inside the plastic shell 1 and playing a role in waterproofing and dustproofing.

[0048] On the other hand, the present embodiment provides a battery pack, including the above-mentioned BMS installation structure, to further improve the pressure resistance performance of the battery pack.

[0049] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A BMS installation structure, characterized in that: The invention comprises a plastic shell (1), a first wiring terminal and a second wiring terminal. The plastic shell (1) is provided with at least two coil installation chambers (11) and at least two wiring chambers (12). The coil installation chamber (11) is used to install the coil (2). A first insulating partition (13) is provided between two adjacent coil installation chambers (11) and between two adjacent wiring chambers (12). The first wiring terminal is arranged outside the coil installation chamber (11), and the second wiring terminal is arranged outside the wiring chamber (12). One end of the lead wire (21) of the coil (2) is connected to the first wiring terminal, and the other end of the lead wire (21) passes through the coil installation chamber (11) and the wiring chamber (12) in sequence to be connected to the second wiring terminal. The plastic shell (1) is filled with silica gel to fix the coil (2) and the lead wire (21).

2. The BMS installation structure according to claim 1, characterized in that: An isolation chamber (14) is provided between the coil installation chamber (11) and the wiring chamber (12); a second insulating partition (15) is provided between the isolation chamber (14) and the coil installation chamber (11) and the wiring chamber (12); the second insulating partition (15) is provided with a clearance notch for the lead wire (21) to pass through.

3. The BMS installation structure according to claim 2, characterized in that: The first insulating partition (13) and the second insulating partition (15) are both integrally formed with the plastic shell (1).

4. The BMS installation structure according to claim 1, characterized in that: The first wiring terminal comprises a plurality of first PIN pins (31), the first PIN pins (31) being inserted into the plastic shell (1), one end of the first PIN pin (31) extending into the coil installation chamber (11), and the other end of the first PIN pin (31) extending to the outer end of the plastic shell (1); and / or The second wiring terminal comprises a plurality of second PIN pins (41), wherein the second PIN pins (41) are inserted into the plastic shell (1), one end of the second PIN pin (41) extends into the wiring chamber (12), and the other end of the second PIN pin (41) extends to the outer end of the plastic shell (1).

5. The BMS installation structure according to claim 4, characterized in that: The plastic shell (1) is provided with a plurality of first wiring slots (32), and one end of the first PIN pin (31) extends into the first wiring slot (32); and / or The plastic shell (1) is provided with a plurality of second wiring slots (42), and one end of the second PIN pin (41) extends into the second wiring slot (42).

6. The BMS installation structure according to claim 5, characterized in that: The heights of the first wiring groove (32) and the second wiring groove (42) are flush with the first insulating partition (13), and the filling height of the silica gel is flush with the first insulating partition (13).

7. The BMS installation structure according to claim 1, characterized in that: The plastic shell (1) is also provided with an installation mark (16), and the installation mark (16) is arranged in the coil installation chamber (11) or the wiring chamber (12), and the installation mark (16) is used to indicate the coil installation chamber (11) or the wiring chamber (12).

8. The BMS installation structure according to claim 1, characterized in that: The BMS installation structure further comprises a cover shell, wherein the cover shell is arranged on the top of the plastic shell (1), and the cover shell is connected to the plastic shell (1).

9. The BMS installation structure according to any one of claims 1 to 8, characterized in that: The distance between the first wiring terminal and the second wiring terminal is not less than 30 mm.

10. A battery pack, characterized in that: Comprising the BMS installation structure according to any one of claims 1-9.

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