Battery pack

Abstract

The utility model discloses a battery pack which comprises a box body, a battery module, an electric appliance module and a battery management system (BMS) module, and the battery module is arranged in the box body and is fixedly connected with the box body; the electric appliance mounting plate is used for mounting electric appliance elements, and the electric appliance mounting plate is fixed at the bottom of the box body; the BMS mounting plate is used for mounting a BMS assembly, and the BMS mounting plate is respectively connected with the electric appliance mounting plate and the battery module. According to the technical scheme of the utility model, the problems that the installation of the BMS assembly is limited by the installation space in the box body and the locking operation is inconvenient in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, in particular to a battery pack. Background Art

[0002] The existing BMS components are installed in the battery box mainly by locking the BMS components to the BMS mounting plate through bolts, and then locking the BMS mounting plate to the box, so that the BMS mounting plate is isolated from the electrical components in the box. This method is limited by the installation space in the box and has the problem of inconvenient locking operation. Utility Model Content

[0003] The main purpose of the utility model is to provide a battery pack, aiming to solve the problem of inconvenient locking operation due to insufficient installation space in a box when installing BMS components in the prior art.

[0004] To achieve the above-mentioned purpose, the battery pack proposed by the utility model includes:

[0005] Box;

[0006] A battery module is placed in the box and fixedly connected to the box;

[0007] An electrical installation plate, used for installing electrical components, the electrical installation plate being fixed to the bottom of the box; and

[0008] The BMS mounting plate is used to install the BMS components, and the BMS mounting plate is connected to the electrical mounting plate and the battery module respectively.

[0009] Optionally, a reinforcement structure is provided on the electrical installation board to improve the structural strength of the electrical installation board.

[0010] Optionally, the reinforcement structure is configured as a reinforcement rib, and the reinforcement rib is arranged adjacent to the electrical component.

[0011] Optionally, the reinforcing ribs include a plurality of reinforcing ribs, and the plurality of reinforcing ribs are individually enclosed or enclosed with the edge of the electrical appliance mounting board to form a plurality of closed figures with non-unique patterns.

[0012] Optionally, some of the closed figures are provided with weight-reducing holes.

[0013] Optionally, the BMS mounting plate includes a plate body, an upper fixing portion provided at the upper end of the plate body, and a lower fixing portion provided at the lower end of the plate body, the battery pack also includes a battery module, the battery module is provided in the box body, the upper fixing portion is connected to the battery module, and the lower fixing portion is connected to the electrical mounting plate.

[0014] Optionally, the battery module includes a module pressing plate and a module end plate, the upper fixing portion is connected to the module pressing plate, and the lower fixing portion is respectively connected to the module end plate and the electrical installation plate.

[0015] Optionally, the upper fixing portion is a first lug bent at the upper end of the plate body, the first lug faces the direction of the battery module, and the first lug is provided with a mounting hole for a fastener to pass through and fix.

[0016] Optionally, the lower fixing portion is a second lug bent at the lower end of the plate body, the second lug faces the electrical installation board, and the second lug is provided with a first fixing hole and a second fixing hole, the first fixing hole is used to connect to the module end plate, and the second fixing hole is used for connection to the electrical installation board.

[0017] Optionally, the battery pack further comprises an insulating fireproof cloth, which is located above the BMS mounting plate and shields the BMS assembly.

[0018] Optionally, the electrical module is integrally mounted on the bottom of the box, and the BMS module is integrally mounted on the battery module and the electrical mounting plate.

[0019] The technical solution of the utility model adopts a box, a battery module, an electrical installation board and a BMS installation board. The battery module is placed in the box and fixedly connected to the box; the electrical installation board is used to install electrical components, and the electrical installation board is fixed to the bottom of the box; the BMS installation board is used to install BMS components, and the BMS installation board is connected to the electrical installation board and the battery module respectively. During assembly, the electrical components can be pre-installed on the electrical installation board, and the BMS components can be pre-installed on the BMS installation board. Compared with assembly in the box, the installation of the BMS components and electrical components is more convenient; then, after the electrical installation board is loaded into the box and fixed, the BMS installation board is fixed to the box and the electrical installation board, which solves the problem in the prior art that the electrical components are pre-assembled in the box, the BMS installation board is fixed separately in the box, and the BMS components need to be isolated from the electrical components. Due to the limited box space, the operation is difficult in the process of pre-tightening the BMS installation board with fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a battery pack of the utility model;

[0022] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 It is a structural schematic diagram of another embodiment of the battery pack of the utility model.

[0024] Description of Figure Numbers:

[0025] Label name Label name 100 Battery Pack 510 Board body 200 Cabinet 520 Upper fixed part 300 Battery Module 521 First lug 310 Module pressure plate 530 Lower fixing part 320 Module end plate 531 Second lug 400 Electrical installation board 600 Electrical components 410 Strengthening the structure 700 BMS Components 420 Reinforcement 710 Motherboard components 421 Weight reduction hole 720 From the board components 500 BMS mounting plate 800 Insulation fireproof cloth

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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 ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] The utility model provides a battery pack.

[0032] In one embodiment of the present invention, Figures 1 to 3 As shown, the battery pack 100 includes:

[0033] Box 200;

[0034] The battery module 300 is placed in the box body 200 and fixedly connected to the box body 200;

[0035] An electrical module, comprising an electrical mounting plate 400 and an electrical component 600, wherein the electrical mounting plate 400 is fixed to the bottom of the box 200, and the electrical component 600 is mounted on the electrical mounting plate 400; and

[0036] The BMS module includes a BMS mounting plate 500 and a BMS assembly 700 . The BMS assembly 600 is mounted on the BMS mounting plate 500 . The BMS mounting plate 500 is connected to the electrical mounting plate 400 and the battery module 300 , respectively.

[0037] The BMS component 700 usually includes a shell and a circuit board arranged in the shell, and mainly receives and collects signals, such as receiving vehicle computer signals; collecting voltage, temperature and other signals of the battery module 300; the existing BMS component 700 is installed on the battery module 300, mainly by first fixing the BMS component 700 to the BMS mounting plate 500, the battery module 300 is provided with a mounting bracket, and then the BMS mounting plate 500 with the BMS component 700 is fixed to the battery module 300 through the mounting bracket. The full name of BMS (Battery Management System) is battery management system, which manages the charging and discharging of the battery to keep the battery in an optimal state. BMS is divided into master-slave type and integrated type according to different topological structures; the BMS component 700 described in this solution includes a main board component 710 and a slave board component 720.

[0038] The existing BMS component 700 is installed in the battery box body 200 mainly by locking the BMS component 700 to the BMS mounting plate 500 through bolts, and then locking the BMS mounting plate 500 to the box body 200, so that the BMS mounting plate 500 is isolated from the electrical components in the box body 200. This method is limited by the installation space in the box body 200, and there is a problem of inconvenient locking operation.

[0039] This solution can optimize the space in the box by centrally installing the electrical components 600 on the electrical installation board 400, so that when the BMS installation board 500 is fixed to the battery module 300 and the electrical installation board 400, there is more space in the horizontal and longitudinal beams, and the operation is more convenient.

[0040] In addition, because the electrical module is integrally mounted on the bottom of the box, the BMS module is integrally mounted on the battery module and the electrical mounting plate.

[0041] During assembly of the present solution, the electrical component 600 can be pre-installed on the electrical installation board 400, and the BMS assembly 700 can be pre-installed on the BMS installation board 500. Compared with assembly in the cabinet 200, the installation of the BMS assembly 700 and the electrical component 600 is more convenient. Then, after the electrical installation board 400 is loaded into the cabinet 200 for fixing, the BMS installation board 500 is fixed to the cabinet 200 and the electrical installation board 400. This solves the problem in the prior art that the electrical component 600 is pre-assembled in the cabinet 200, the BMS installation board 500 is fixed separately to the cabinet 200, and the BMS assembly 700 needs to be isolated from the electrical component 600. Due to the limited space of the cabinet 200, the operation is difficult during the process of pre-tightening and fixing the BMS installation board 500 with fasteners.

[0042] The BMS mounting plate 500 is connected to the battery module 300 , which reduces the space occupied by the box 200 , thereby providing more space when installing the BMS mounting plate 500 and making it more convenient to pre-tighten the fasteners.

[0043] The electrical component 600 is mounted on the electrical mounting board 400. In order to ensure the structural stability of the electrical mounting board 400, a reinforcing structure 410 is provided on the electrical mounting board 400 to improve the structural strength of the electrical mounting board 400. Compared with using thicker plates or harder materials, the cost is lower.

[0044] In one embodiment, the reinforcing structure 410 is configured as a reinforcing rib 420, and the reinforcing rib 420 is arranged adjacent to the electrical component 600. The reinforcing rib 420 includes a plurality of reinforcing ribs, and the plurality of reinforcing ribs 420 respectively enclose or enclose the edge of the electrical mounting board 400 to form a plurality of closed figures with non-unique patterns.

[0045] In another embodiment, the reinforcement structure 410 is a member made of metal or other solid materials embedded in the electrical mounting plate 400 , thereby increasing the strength and durability of the connection points on the electrical mounting plate 400 , thereby increasing the structural strength and stability of the electrical mounting plate 400 .

[0046] In another embodiment, the reinforcement structure 410 is a reinforcement rib 420 added to the surface or inside of the electrical installation board 400 to increase the rigidity and bending resistance of the electrical installation board 400. The reinforcement rib 420 can be in a planar shape or in a lapped, folded, or other shape.

[0047] In one embodiment, the reinforcing ribs 420 are configured as structural reinforcements, which are components disposed on the surface or inside a structural member made of plastic, metal or other materials to improve the strength, rigidity and stability of the structure. They can be ribs or ribs disposed transversely or longitudinally on the surface of the structure, or reinforcement rods or reinforcement ribs disposed inside.

[0048] In another embodiment, the reinforcing rib 420 is a rib member formed by protrusions or depressions of the plate body 510. The rib member refers to a strip-shaped member provided on the surface of a structure such as a plastic or a plate in a protruding or recessed manner, and is used to increase the bearing capacity and anti-deformation ability of the structure.

[0049] Without loss of generality, the above solution may be used on the BMS mounting plate 500 , thereby reducing the cost of the BMS mounting plate 500 and improving the structural strength of the BMS mounting plate 500 .

[0050] In order to meet the requirement of lightweight, and under the premise of meeting the structural strength of the electrical installation board 400, in order to reduce the weight of the electrical installation board 400, some of the closed figures are further provided with weight-reducing holes 421.

[0051] The reinforcing rib 420 is a pattern formed by stamping in the electrical installation board 400. Compared with other methods, the stamping method has high processing efficiency and good product quality.

[0052] Specifically, the pattern can be closed or open. The setting of the pattern here is mainly to ensure the structural strength of the mounting plate, and can be designed according to the difficulty of actual manufacturing. The pattern can be a single combination of multiple rectangles, circles, prisms, etc., such as the concentric setting of inner and outer rectangles; or a cross combination, such as the scheme of outer rectangle and inner circle.

[0053] In this way, the reinforcing ribs 420 of the electrical installation board 400 are formed by self-stamping, and the complex shape increases the strength and stability of the structure. On this basis, weight-reducing holes 421 are provided to reduce the weight of the electrical installation board 400. In order to avoid affecting the structural strength of the electrical installation board 400, the weight-reducing holes 421 are provided in the reinforcing ribs 420. Compared with the existing electrical installation board 400 of the same thickness, this solution has a lower weight and a higher structural stability.

[0054] Specifically, because it is located inside the reinforcing rib 420, the process in the stamping process is guaranteed, and the factors affecting the quality due to the stamping process are reduced; in order to facilitate the stamping of the lightening hole 421 and avoid affecting the quality of the electrical installation board 400, there is a preset distance between the inner periphery of the reinforcing rib 420 and the periphery of the lightening hole 421, and the preset distance is 3mm-5mm. If the preset distance is less than 3mm, on the one hand, the processing difficulty is large, and on the other hand, the quality after stamping is difficult to ensure; if the preset distance is greater than 5mm, the lightening hole 421 is too large, which easily increases the risk of cracking of the board surface of the board body 510, and the quality of the electrical installation board 400 is difficult to ensure.

[0055] Regarding the BMS assembly 700 and the BMS mounting plate 500 .

[0056] Specifically, the BMS assembly 700 includes a main board assembly 710 and a slave board assembly 720. A main installation area and a secondary installation area are provided on the surface of the BMS mounting plate 500. The main board assembly 710 is installed in the main installation area, and the slave board assembly 720 is installed in the secondary installation area. Reinforcing ribs 420 are provided in both the main installation area and the secondary installation area to strengthen the structural strength of the BMS mounting plate 500.

[0057] Specifically, the BMS mounting plate 500 includes a plate body 510, an upper fixing portion 520 provided at the upper end of the plate body 510, and a lower fixing portion 530 provided at the lower end of the plate body 510. The battery pack 100 also includes a battery module 300, which is provided in the box body 200. The upper fixing portion 520 is connected to the battery module 300, and the lower fixing portion 530 is connected to the electrical mounting plate 400.

[0058] The battery module 300 includes a module pressing plate 310 and a module end plate 320 , the upper fixing portion 520 is connected to the module pressing plate 310 , and the lower fixing portion 530 is connected to the module end plate 320 and the electrical installation plate 400 , respectively.

[0059] In one embodiment, the upper fixing portion 520 is a first lug 521 bent at the upper end of the plate body 510 , the first lug 521 faces the direction of the battery module 300 , and the first lug 521 is provided with a mounting hole for fasteners to pass through and fix.

[0060] In one embodiment, the lower fixing portion 530 is a second lug 531 bent at the lower end of the plate body 510, the second lug 531 faces the electrical installation board 400, and the second lug 531 is provided with a first fixing hole and a second fixing hole, the first fixing hole is used to connect with the module end plate 320, and the second fixing hole is used for connection with the electrical installation board 400.

[0061] In one embodiment, the upper fixing portion 520 is a first lug 521, and the lower fixing portion 530 is a second lug 531. The first lug 521 is connected to the module pressing plate by bolts, and the second lug 531 is connected to the module end plate 320 and the electrical installation plate 400 by bolts respectively.

[0062] In other embodiments, the upper fixing portion 520 and / or the lower fixing portion 530 may also be other structures, including but not limited to a pressing sheet, an angle head, etc.

[0063] After the BMS mounting plate 500 is assembled in the box body 200 , in order to avoid the risk of condensed water entering the connector during the subsequent assembly process, the battery pack 100 also includes an insulating fireproof cloth 800, which is located above the BMS mounting plate 500 and covers the BMS assembly 700.

[0064] The electrical components 600 of this solution can be pre-installed on the electrical installation board outside the box 200, and then installed in the box 200 for easy assembly. When installing the BMS component 700, the BMS component 700 is pre-installed on the BMS installation board 500, which solves the problem of small installation space and difficult installation. Then the electrical installation board is installed in the box 200, and the BMS installation board 500 is fixed to the battery module 300 and the electrical installation board, and an insulating fireproof cloth 800 is covered on top to prevent the BMS installation board 500 from being installed vertically and condensed water from entering the dripping connector and causing failure.

[0065] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery pack, characterized in that: include: Box; A battery module is placed in the box and fixedly connected to the box; An electrical module, comprising an electrical mounting plate and electrical components mounted on the electrical mounting plate, wherein the electrical mounting plate is fixed to the bottom of the box; and The BMS module comprises a BMS mounting plate and a BMS component mounted on the BMS mounting plate, wherein the BMS mounting plate is connected to the electrical mounting plate and the battery module respectively.

2. The battery pack according to claim 1, characterized in that: The electrical appliance mounting plate is provided with a reinforcement structure to improve the structural strength of the electrical appliance mounting plate.

3. The battery pack according to claim 2, characterized in that: The reinforcing structure is configured as a reinforcing rib, and the reinforcing rib is arranged adjacent to the electrical component. The reinforcing rib includes a plurality of reinforcing ribs, and the plurality of reinforcing ribs are respectively enclosed individually or together with the edge of the electrical installation board to form a plurality of closed figures with non-unique patterns.

4. The battery pack according to claim 3, characterized in that: Some of the closed figures are also provided with weight-reducing holes.

5. The battery pack according to claim 1, wherein: The BMS mounting plate includes a plate body, an upper fixing portion provided at the upper end of the plate body, and a lower fixing portion provided at the lower end of the plate body, the upper fixing portion is connected to the battery module, and the lower fixing portion is connected to the electrical mounting plate.

6. The battery pack according to claim 5, characterized in that: The battery module comprises a module pressing plate and a module end plate, the upper fixing portion is connected to the module pressing plate, and the lower fixing portion is respectively connected to the module end plate and the electrical installation plate.

7. The battery pack according to claim 6, characterized in that: The upper fixing portion is a first lug bent and arranged at the upper end of the plate body, the first lug faces the direction of the battery module, and the first lug is provided with a mounting hole for a fastener to pass through and fix.

8. The battery pack according to claim 6, wherein: The lower fixing portion is a second lug bent at the lower end of the plate body, the second lug faces the electrical installation board, and the second lug is provided with a first fixing hole and a second fixing hole, the first fixing hole is used to connect with the module end plate, and the second fixing hole is used for connection with the electrical installation board.

9. The battery pack according to claim 1, characterized in that: The battery pack also includes an insulating fireproof cloth, which is located above the BMS mounting plate and shields the BMS assembly.

10. The battery pack according to claim 1, characterized in that: The electrical module is integrally mounted on the bottom of the box, and the BMS module is integrally mounted on the battery module and the electrical mounting plate.

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