Power battery CTP module end plate

Abstract

The utility model relates to the technical field of power battery module end plates, and discloses a power battery CTP module end plate which comprises a lower box body, and a metal plate end plate and an end plate supporting plate are welded on the lower box body; the metal plate end plate is welded on the lower box body; the end plate supporting plate is welded on the lower box body; the sheet metal end plate is connected with the sheet metal side plate through a bolt, so that the sheet metal end plate is constructed to press the battery cell. The metal plate side plates, the metal plate end plates, the end plate supporting plates and the rear beam are arranged, the metal plate end plates and the end plate supporting plates are welded to the lower box body in an integrated mode, the metal plate end plates are connected with the metal plate side plates and the T-shaped strips through bolts, all the structural parts are high-strength metal plates, the structural strength of the whole package module is improved, the extrusion and collision safety of the whole package is improved, and the service life of the whole package module is prolonged. And the problems of internal circulation lithium precipitation and cycle life attenuation of the battery core caused by poor structural strength of the end plate are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery module end plate technical field especially relates to a power battery CTP module end plate. BACKGROUND

[0002] The existing power battery CTP module end plate is mostly split type, the material is mostly cast aluminum, aluminum profile and plastic part, the module column number is generally not more than three, the pack integration is low, the cast aluminum, aluminum profile, plastic part material cost is higher, the part rigidity is far inferior to sheet metal part, and there are more fastener connections, the fastener cost increases, the production cost increases, the production efficiency is low, and the probability of connection failure increases.

[0003] The internal circulation lithium precipitation and circulation life attenuation of the battery cell caused by the poor structure strength of the end plate, and the bulk type end plate has more fastener connections, aiming at the problems of the poor rigidity of the power battery CTP module end plate, low collision safety, low production efficiency, connection failure and other prominent problems, the market urgently needs a new type of power battery CTP module end plate to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a power battery CTP module end plate to solve the technical problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a power battery CTP module end plate, which comprises:

[0006] The lower box body is welded with a sheet metal end plate and an end plate support plate;

[0007] The sheet metal end plate is welded on the lower box body;

[0008] The end plate support plate is welded on the lower box body;

[0009] The sheet metal end plate is connected with the sheet metal side plate through bolts and is configured to compress the battery cell;

[0010] The sheet metal end plate and the end plate support plate are integrally welded on the lower box body, which reduces the types of parts of the power battery pack and reduces the cost of the power battery pack.

[0011] Further description of the above technical scheme:

[0012] The upper part of the lower box body is welded with a sheet metal end plate and an end plate support plate on both sides, and the sheet metal end plate and the end plate support plate are provided with battery cells.

[0013] Further description of the above technical scheme:

[0014] The electric core is arranged on the upper part of the lower box body.

[0015] As a further description of the above technical solution:

[0016] Both ends of the sheet metal side plate are fixedly connected with the sheet metal end plate.

[0017] As a further description of the above technical solution:

[0018] The two groups of sheet metal end plates are connected through T-shaped strips, and the T-shaped strips are configured as multiple groups.

[0019] As a further description of the above technical solution:

[0020] The sheet metal end plate and the T-shaped strip are connected, and are configured to transversely press the electric core.

[0021] As a further description of the above technical solution:

[0022] The sheet metal side plate is provided with two groups, and the two groups of sheet metal side plates longitudinally press the electric core.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, the sheet metal end plate, the end plate support plate, the rear beam, the sheet metal end plate and the end plate support plate are integrated and welded to the lower box body, the sheet metal end plate is connected with the sheet metal side plate and the T-shaped strip through bolts, all the above-mentioned structural members are high-strength sheet metal parts, the structural strength of the whole package module is improved, the extrusion and collision safety of the whole package is improved, the internal lithium precipitation and cycle life attenuation of the electric core caused by the poor structural strength of the end plate are solved.

[0025] 2. In the utility model, the sheet metal end plate and the end plate support plate are integrated and welded to the lower box body, compared with the commonly used aluminum profile end plate, the amount of fastener connection can be reduced, the production is simplified, the production efficiency is improved, the connection failure risk is reduced, the connecting bolts of the end plate and the lower box body are cancelled, and the cost of the power battery package is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structure diagram of a power battery CTP module end plate is provided in the utility model Figure One .

[0027] Figure 2 A structure diagram of a power battery CTP module end plate is provided in the utility model Figure Two .

[0028] Figure 3 A Figure 2 sectional structure diagram along A-A in the utility model.

[0029] Figure 4 The utility model provides a kind of structure diagram of power battery CTP module end plate Figure Four .

[0030] Legend:

[0031] 1, sheet metal side plate;2, bolt;3, sheet metal end plate;4, end plate support plate;5, battery cell;6, T-shaped strip;7, lower box;8, busbar;9, rear beam. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0033] Referring to Figures 1-4 , the utility model provides an embodiment: a kind of power battery CTP module end plate, comprising:

[0034] Lower box 7, sheet metal end plate 3 and end plate support plate 4 are welded on lower box 7;

[0035] Sheet metal end plate 3, sheet metal end plate 3 is welded on lower box 7, sheet metal end plate 3, end plate support plate 4 are integrated and welded to lower box 7, improve module end plate rigidity, improve the structural strength of whole package module, improve the extrusion, collision safety of whole package, solve the problem of internal circulation lithium precipitation and cycle life attenuation of battery cell 5 caused by poor end plate structural strength;

[0036] End plate support plate 4, end plate support plate 4 is welded on lower box 7;

[0037] Sheet metal side plate 1, T-shaped strip 6 and battery cell 5, sheet metal end plate 3 is connected with sheet metal side plate 1 by bolt 2, and is structured as pressing battery cell 5;

[0038] Wherein, sheet metal end plate 3 and end plate support plate 4 are integrated and welded on lower box 7, are structured as reducing the part types of power battery package, and are structured as reducing the cost of power battery package, sheet metal end plate 3, end plate support plate 4 are integrated and welded to lower box 7, sheet metal end plate 3 is connected with sheet metal side plate 1 and T-shaped strip 6 by bolt 2, fixedly presses battery cell 5 module, reduces the amount of fastener connection, simplifies production, improves production efficiency, reduces connection failure risk.

[0039] The upper part of the lower box body 7 is welded with sheet metal end plates 3 and end plate support plates 4 on both sides, the inside of the sheet metal end plates 3 and the end plate support plates 4 is provided with battery cells 5, the battery cells 5 are arranged on the upper part of the lower box body 7, both ends of the sheet metal side plates 1 are fixedly connected with the sheet metal end plates 3, by integrating and welding the sheet metal end plates 3 and the end plate support plates 4 to the lower box body 7, compared with the commonly used aluminum end plates, the amount of fasteners used can be reduced, the production is simplified, the production efficiency is improved, the connection failure risk is reduced, the connecting bolts 2 of the end plates and the lower box body 7 are cancelled, the cost of the power battery pack is reduced, the two groups of sheet metal end plates 3 are connected through T-shaped strips 6, the T-shaped strips 6 are constructed as multiple groups, the sheet metal end plates 3 are connected with the T-shaped strips 6, and are configured to horizontally press the battery cells 5, the sheet metal side plates 1 are provided with two groups, the two groups of sheet metal side plates 1 longitudinally press the battery cells 5, the battery cells 5 are provided with busbars 8, and the lower box body 7 is internally arranged with rear beams 9.

[0040] Working principle: first, the sheet metal end plates 3 and the end plate support plates 4 are integrated and welded to the lower box body 7, the module end plate rigidity is improved, the overall package module structure strength is improved, the extrusion and collision safety of the overall package is improved, the internal circulating lithium precipitation and circulating life attenuation problems of the battery cells 5 caused by poor end plate structure strength are solved;

[0041] Then, the sheet metal end plates 3 and the end plate support plates 4 are integrated and welded to the lower box body 7, the sheet metal end plates 3 are connected with the sheet metal side plates 1 and the T-shaped strips 6 through the bolts 2, the battery cell 5 module is fixedly pressed, the amount of fasteners used is reduced, the production is simplified, the production efficiency is improved, and the connection failure risk is reduced.

[0042] Finally, it should be noted that: the above only describes preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A power battery CTP module end plate, characterized in that: The power battery CTP module end plate includes: The lower housing (7) is welded with a sheet metal end plate (3) and an end plate support plate (4). Sheet metal end plate (3), said sheet metal end plate (3) is welded to the lower box body (7); End plate support plate (4), which is welded to the lower box body (7); Sheet metal side plate (1), T-shaped strip (6) and battery cell (5), wherein the sheet metal end plate (3) is connected to the sheet metal side plate (1) by bolts (2) and is configured to press the battery cell (5); The sheet metal end plate (3) and the end plate support plate (4) are integrated and welded onto the lower box body (7).

2. The power battery CTP module end plate according to claim 1, characterized in that: Sheet metal end plates (3) and end plate support plates (4) are welded to both sides of the upper part of the lower box (7), and battery cells (5) are installed inside the sheet metal end plates (3) and end plate support plates (4).

3. The power battery CTP module end plate according to claim 2, characterized in that: The battery cell (5) is located on the upper part of the lower housing (7).

4. The power battery CTP module end plate according to claim 3, characterized in that: Both ends of the sheet metal side plate (1) are fixedly connected to sheet metal end plates (3).

5. The power battery CTP module end plate according to claim 4, characterized in that: The two sets of sheet metal end plates (3) are connected by T-shaped strips (6), and the T-shaped strips (6) are constructed in multiple sets.

6. The power battery CTP module end plate according to claim 5, characterized in that: The sheet metal end plate (3) and the T-shaped strip (6) are connected and configured to laterally press the battery cell (5).

7. The power battery CTP module end plate according to claim 6, characterized in that: The sheet metal side plate (1) is provided in two sets, and the two sets of sheet metal side plates (1) longitudinally press the battery cell (5).

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