Battery cell module end plate for fixing BMS (Battery Management System) assembly and fixing structure of battery cell module end plate

Abstract

The utility model provides a battery cell module end plate for fixing a BMS (Battery Management System) component, which comprises an end plate, a buckle is arranged on the end plate, the buckle comprises a plurality of clamping plates, the clamping plates are arranged at intervals in the thickness direction of the end plate, the projections of the clamping plates on the plate surface of the end plate do not coincide, the gaps among the clamping plates form bayonets, and the bayonets are matched with the clamping plates. And the bayonet is used for fixing the head of the bolt. Compared with a metal plate support fixing scheme in the prior art, the end plate integrates the buckling function, and the number of parts is reduced. And the buckle design realizes rapid insertion, and the installation time is reduced. And through double constraint of bayonet axial limiting and limiting part radial limiting, the vibration resistance is better than that of pure metal plate bracket fixing, and the battery bracket is particularly suitable for the use scene of an automobile battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery cell module, specifically relates to a battery cell module end plate for fixing BMS assembly and its fixing structure. BACKGROUND

[0002] At present, energy storage devices have been more and more widely popularized and applied, and the pack is the internal core component of the energy storage container, which is used for assembling a plurality of battery cells into a module.

[0003] Most of the packs on the market are composed of battery cell series-parallel connection structure 1P104S, the battery cell series-parallel connection structure 1P104S is composed of front and rear modules, and the battery cells are stacked and fixed through the module end plate. The traditional end plate has a single function, and the BMS in the pack box needs to be fixed on the end plate by a sheet metal part, which causes the weight and cost to rise. UTILITY MODEL CONTENTS

[0004] The utility model discloses a battery cell module end plate for fixing BMS assembly, which aims at the defects of the prior art, and comprises an end plate, a buckle is arranged on the end plate, the buckle comprises a plurality of clamping plates, the clamping plates are arranged at intervals along the thickness direction of the end plate and the projections of the clamping plates on the surface of the end plate do not coincide, the gaps between the clamping plates form a clamping hole, and the clamping hole is used for fixing the head of a bolt.

[0005] Further, the size of the clamping hole in the thickness direction of the end plate matches the thickness of the head of the bolt to limit the axial displacement of the bolt.

[0006] Further, the clamping plate has a limiting portion, and the limiting portion is used for limiting the head of the bolt in a specified area.

[0007] Further, the limiting portion is a groove matched with the shape of the head of the bolt.

[0008] Further, the limiting portions are oppositely arranged.

[0009] Further, the buckle is integrally formed with the end plate.

[0010] Further, the clamping plate is an elastic metal sheet.

[0011] Further, the plurality of clamping plates are symmetrically arranged.

[0012] Further, the edge of the clamping plate is provided with a guide inclined surface to guide the fixation of the head of the bolt.

[0013] A fixing structure for fixing a BMS assembly to a cell module end plate, comprising: a BMS assembly having a through hole, the head of a bolt is fixed to the buckle of the end plate, and the tail of the bolt is locked by a nut after passing through the through hole, so as to fix the BMS assembly on the end plate.

[0014] The utility model discloses the beneficial effects are:

[0015] 1. Compared with the sheet metal support fixing scheme in the prior art, the end plate integrates buckle function, and the number of parts is reduced. The buckle design realizes quick insertion and reduces installation time. The axial limiting of the bayonet and the radial limiting of the limiting part are double constraints, and the anti-vibration performance is better than that of the pure sheet metal support fixing, especially suitable for the use scene of automobile battery.

[0016] 2. The design of the clamping plate and the guide slope can adapt to different size bolts, improve the universality, and simplify the installation process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of a cell module;

[0018] Figure 2 It is a reverse structure schematic view of the end plate buckle of the cell module;

[0019] Figure 3 It is a front structure schematic view of the end plate buckle of the cell module;

[0020] Figure 4 It is a front structure schematic view of the end plate buckle of the cell module;

[0021] Figure 5 It is a reverse structure schematic view of the end plate buckle of the cell module;

[0022] Figure 6 It is a structure schematic view of the end plate buckle of the cell module with a guide slope;

[0023] Reference signs: 1-end plate;11-buckle;111-clamping plate;1111-limiting part;112-bayonet;113-guide slope;2-BMS assembly;21-through hole;3-bolt;4-nut. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical schemes and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0025] Example 1

[0026] Reference Figures 1 to 6An end plate for fixing the cell module of BMS components, comprising: an end plate 1, provided with a buckle 11, the buckle 11 comprises 4 clamping plates 111, the clamping plates 111 are arranged in the thickness direction of the end plate 1 and the projections of the clamping plates 111 on the surface of the end plate 1 do not coincide, the gap between the clamping plates 111 forms a buckle 112, which is used to fix the head of the bolt 3. Wherein, the projections of the clamping plates 111 on the surface of the end plate 1 do not coincide, that is, each clamping plate 111 is responsible for clamping a part of the head of the bolt 3, as shown in Figure 4 And Figure 5 , the 4 clamping plates 111 fix the head of the bolt 3 in front of and behind each other. The size of the buckle 112 in the thickness direction of the end plate 1 matches the thickness of the head of the bolt 3 to limit the axial displacement of the bolt 3, prevent the bolt from falling off in the vibration environment, especially suitable for high vibration scenes such as automobile batteries. The clamping plate 111 is provided with a limiting portion 1111, which is used to limit the head of the bolt 3 in a specified area, and the limiting portion 1111 is a groove matched with the shape of the head of the bolt 3, the limiting portion 1111 groove is matched with the shape of the bolt head, realizing radial limiting, preventing the bolt from rotating or deviating. The limiting portions 1111 are oppositely arranged, forming a symmetrical force structure, which improves the stability of the bolt fixation. The buckle 11 is integrally formed with the end plate 1, which reduces the assembly link and improves the overall strength of the structure. As a preferred scheme, the clamping plate 111 is an elastic metal sheet, which provides a flexible clamping force, adapts to the size tolerance of the bolt head, and at the same time buffers the vibration impact. A plurality of clamping plates 111 are symmetrically arranged with each other, the symmetrical clamping plate design balances the stress, and avoids structural failure caused by unilateral stress concentration. As shown in Figure 6 , the edge of the clamping plate 111 is provided with a guide slope 113 to guide the fixation of the head of the bolt 3, the guide slope 113 guides the head of the bolt 3 to slide into the buckle 112, simplifying the installation process. The elastic clamping plate and the guide slope design can adapt to different sizes of bolts, improving the universality.

[0027] Embodiment 2

[0028] A fixing structure of an end plate for fixing the cell module of BMS components, characterized in that it comprises: a BMS component 2, the BMS component 2 has a through hole 21, the head of the bolt 3 is fixed on the buckle 11 of the end plate 1, and the tail of the bolt 3 is locked through the through hole 21 by a nut 4 to fix the BMS component 2 on the end plate 1.

[0029] Compared with the sheet metal support fixing scheme in the prior art, the end plate integrates the buckle function, reducing the number of parts. The buckle design realizes quick insertion, reducing the installation time. The buckle 112 axial limiting and the groove (limiting portion 1111) radial limiting double restraint, the anti-vibration performance is better than that of the pure sheet metal support fixing.

[0030] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A cell module end plate for fixing BMS components, characterized in that, include: An end plate (1) is provided with a buckle (11), the buckle (11) includes multiple clamping plates (111), the clamping plates (111) are spaced apart along the thickness direction of the end plate (1) and their projections on the surface of the end plate (1) do not overlap, the gap between the multiple clamping plates (111) forms a bayonet (112), the bayonet (112) is used to fix the head of the bolt (3).

2. The cell module end plate for fixing BMS components according to claim 1, characterized in that: The dimensions of the bayonet (112) in the thickness direction of the end plate (1) are matched with the head thickness of the bolt (3) to limit the axial displacement of the bolt (3).

3. The cell module end plate for fixing BMS components according to claim 1, characterized in that: The card plate (111) has a limiting part (1111) for limiting the head of the bolt (3) in a designated area.

4. The cell module end plate for fixing BMS components according to claim 3, characterized in that: The limiting part (1111) is a groove that matches the head shape of the bolt (3).

5. The cell module end plate for fixing BMS components according to claim 4, characterized in that: The limiting part (1111) is arranged opposite to each other.

6. The cell module end plate for fixing BMS components according to claim 1, characterized in that: The buckle (11) is integrally formed with the end plate (1).

7. The cell module end plate for fixing BMS components according to claim 1, characterized in that: The card plate (111) is an elastic metal sheet.

8. The cell module end plate for fixing BMS components according to claim 1, characterized in that: The multiple card plates (111) are arranged symmetrically to each other.

9. The cell module end plate for fixing BMS components according to claim 1, characterized in that: The edge of the card plate (111) is provided with a guide slope (113) to guide the head of the bolt (3) for fixing.

10. A fixing structure for fixing the cell module end plate of a BMS assembly according to any one of claims 1 to 9, characterized in that, include: BMS assembly (2) has a through hole (21). The head of the bolt (3) is fixed to the buckle (11) of the end plate (1). The tail of the bolt (3) passes through the through hole (21) and is locked by a nut (4) to fix the BMS assembly (2) on the end plate (1).

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