Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle, which are used for reducing the weight of the battery pack, improving the integration efficiency of the battery pack and reducing the production cost of the battery pack. The battery pack comprises a battery frame, a battery cell module, a high-voltage connecting bar, an insulating structure and a fixed bracket, the battery cell module is fixed on the battery frame; the insulating structure is fixed on the upper end surface of the battery cell module; the fixing brackets are arranged at the two ends of the battery cell module and are fixed on the battery frame; the two ends of the high-voltage connecting bar are connected with the fixing supports respectively, and the high-voltage connecting bar is pressed on the insulating structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery field, concretely is a battery pack and vehicle. BACKGROUND

[0002] As one of the most critical components of new energy vehicles, the demand for power batteries is also increasing. The electric core is an important part of the power battery, which determines the safety and service life of the new energy vehicle. In order to meet the power requirements of the vehicle, multiple electric cores need to be integrated to provide the voltage and current required for the normal operation of the new energy vehicle. In order to provide the pre-tightening force required for the combined connection of multiple electric core groups and effectively solve the problem of electric core expansion during use, many scholars and researchers at home and abroad have proposed using a fixing device to combine and connect the electric core module of the power battery, for example: the electric core module is compressed by a top steel belt arranged in the longitudinal direction of the electric core module, and the two ends of each top steel belt are connected with the end plates distributed at both ends of the electric core module.

[0003] The existing top steel belt compression method requires additional parts, which increases the weight of the battery pack, reduces the integration efficiency of the battery pack, and increases the production cost of the battery pack. SUMMARY

[0004] The utility model provides a kind of battery pack and vehicle, to reduce the weight of battery pack, improve the integration efficiency of battery pack and reduce the production cost of battery pack.

[0005] The technical scheme of the present application is as follows:

[0006] The present application provides a kind of battery pack, comprising: battery frame, electric core module, high-voltage connection row, insulating structure and fixed support;

[0007] The electric core module is fixed on the battery frame;

[0008] The insulating structure is fixed on the upper end surface of the electric core module;

[0009] The fixed support is arranged at both ends of the electric core module, and the fixed support is fixed on the battery frame;

[0010] The two ends of the high-voltage connection row are connected with one of the fixed supports respectively, and the high-voltage connection row is pressed on the insulating structure.

[0011] Preferably, the high-voltage connection row comprises: connection row body and insulating sleeve;

[0012] The insulating sleeve wraps the connection row body, and the two ends of the connection row body protrude out of the insulating sleeve.

[0013] Preferably, the high-voltage connecting strip further comprises a pultruded composite material.

[0014] The pultruded composite material is pressed against the insulating structure, and two ends of the pultruded composite material are respectively connected with one of the fixing supports.

[0015] The insulating sleeve is fixed in the inner cavity of the pultruded composite material.

[0016] Preferably, the pultruded composite material is provided with an opening arranged along the length direction of the pultruded composite material on the side end face away from the battery cell module.

[0017] Preferably, the insulating sleeve is fixedly attached in the inner cavity of the pultruded composite material. Preferably, the battery cell module is attached to the battery frame by structural adhesive.

[0018] Preferably, the high-voltage connecting strip is connected with the fixing support by a bolt.

[0019] Preferably, the fixing support is welded to the battery frame.

[0020] Preferably, the insulating structure is attached to the upper end face of the battery cell module.

[0021] The application also provides a vehicle comprising the battery pack.

[0022] The application has the following beneficial effects:

[0023] The high-voltage connecting strip is used to replace the existing pressing strip, which can cancel the existing steel belt structure, effectively reduce the overall weight of the battery pack, improve the integration efficiency of the battery pack, and reduce the production cost of the battery pack. In addition, the high-voltage connecting strip can provide the required pre-tightening force for the installation of the battery cell module, inhibit the excessive expansion of the battery cell during use, and realize reliable fixation of the battery cell module. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the assembly of the battery pack in the embodiment of the application;

[0025] Figure 2 It is a schematic diagram of the disassembly of the battery pack in the embodiment of the application;

[0026] Figure 3 It is a top view schematic diagram of the high-voltage connecting strip in the embodiment of the application;

[0027] In the figure, 1-battery frame; 2-battery cell module; 3-high-voltage connecting strip; 4-insulating structure; 5-fixing support; 6-structural adhesive; 7-bolt; 31-connecting strip body; 32-insulating sleeve; 33-pultruded composite material; 331-opening. DETAILED DESCRIPTION

[0028] The utility model discloses a concrete implementation mode in combination with the drawings is explained in detail below.

[0029] According to the concrete implementation scheme of the utility model, a power battery high-voltage connecting row loop fixed cell module structure is provided. The high-voltage connecting row in the power battery can realize the accurate and reliable fixation of the cell module while conducting.

[0030] With reference to Figure 1 And Figure 2 The application embodiment provides a battery pack, comprising: a battery frame 1, a cell module 2, a high-voltage connecting row 3, an insulation structure 4 and a fixed support 5;The cell module 2 is fixed on the battery frame 1;The insulation structure 4 is fixed on the upper end surface of the cell module 2;The fixed support 5 is arranged at both ends of the cell module 2, and the fixed support 5 is fixed on the battery frame 1;The both ends of the high-voltage connecting row 3 are connected with a fixed support 5 respectively, and the high-voltage connecting row 3 is pressed on the insulation structure 4.

[0031] By using the high-voltage connecting row 3 to replace the existing steel belt structure, the existing steel belt structure can be cancelled, the overall weight of the battery pack can be effectively reduced, the integration efficiency of the battery pack can be improved, and the production cost of the battery pack can be reduced. Moreover, the high-voltage connecting row 3 can provide the required pre-tightening force for the installation of the cell module 2, inhibit the excessive expansion of the cell during use, and realize the reliable fixation of the cell module 2.

[0032] In combination with Figure 2 The installation process of the battery pack in the application embodiment includes: first, a specified number of cells are arranged in order, and the CCS electrical connection component is welded to the surface of the cell by laser welding to form a cell module 2. Then, the cell module 2 is placed into the battery frame 1 through a tool clamp, and the cell module 2 and the battery frame 1 are adhesively fixed by applying a structural adhesive 6. The insulation structure 4 is pasted on the cell module 2. Then, the high-voltage connecting row 3 is electrically connected with the battery frame 1, and the high-voltage connecting row 3 is mechanically connected with the fixed support 5 by using a bolt 7 (such as an M8 hexagonal head bolt).

[0033] The insulation structure 4 in the application embodiment can be an insulation film, which insulates the cell module 2 and the high-voltage connecting row 3 to prevent the battery pack from leaking electricity. The insulation film is heated by a hot plate machine to soften, and at the same time, the hot plate machine applies appropriate pressure to make the insulation film fully contact and adhere to the surface of the cell module 2. The hot plate machine usually has a precise temperature control system, which can adjust the appropriate working temperature according to the requirements of different insulation film materials.

[0034] With reference to Figure 3The high-voltage connecting bus 3 in this embodiment includes a connecting bus body 31 and an insulating sleeve 32; the insulating sleeve 32 wraps around the connecting bus body 31, and both ends of the connecting bus body 31 extend beyond the insulating sleeve 32.

[0035] To prevent damage to the connecting bus body 31 due to vibration or other factors, it is necessary to protect the connecting bus body 31. (Refer to...) Figure 3 In this embodiment of the application, the high-voltage connection bar 3 further includes: a pultruded composite material 33; the pultruded composite material 33 is pressed onto the insulating structure 4, and both ends of the pultruded composite material 33 are respectively connected to a fixed bracket 5; the insulating sleeve 32 is fixed in the inner cavity of the pultruded composite material 33.

[0036] The insulating sleeve 32 is fixed in the inner cavity of the pultruded composite 33 by double-sided adhesive tape, and the pultruded composite 33 is connected to the fixing bracket 5 on the battery frame 1 by bolts 7.

[0037] Pultruded composite 33 is a pultruded composite material, specifically a high-performance fiber-reinforced polymer (FRP) composite material. Because pultruded composite materials do not deform or crack over time, they provide excellent protection for the connecting bar body 31.

[0038] Reference Figure 3 In this embodiment, the pultruded composite 33 has an opening 331 on the side of the pultruded composite material 33 away from the battery cell module 2, which reduces the material used in the pultruded composite material 33 and achieves the purpose of cost reduction.

[0039] This application also provides a vehicle including the aforementioned battery pack.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A battery pack, characterized in that, include: Battery frame (1), cell module (2), high voltage connector (3), insulation structure (4) and fixing bracket (5); The cell module (2) is fixed on the battery frame (1); The insulation structure (4) is fixed to the upper end surface of the battery cell module (2); The fixing brackets (5) are arranged at both ends of the battery cell module (2), and the fixing brackets (5) are fixed on the battery frame (1); The two ends of the high-voltage connection bar (3) are respectively connected to a fixed bracket (5), and the high-voltage connection bar (3) is pressed against the insulating structure (4).

2. The battery pack according to claim 1, characterized in that, The high-voltage connection bus (3) includes: a connection bus body (31) and an insulating sleeve (32); The insulating sleeve (32) wraps around the connecting bar body (31), and both ends of the connecting bar body (31) extend beyond the insulating sleeve (32).

3. The battery pack according to claim 2, characterized in that, The high-pressure connecting bar (3) also includes: pultruded composite material (33); The pultruded composite (33) is pressed onto the insulating structure (4), and both ends of the pultruded composite (33) are respectively connected to one of the fixed brackets (5); The insulating sleeve (32) is fixed in the inner cavity of the pultruded composite (33).

4. The battery pack according to claim 3, characterized in that, The pultruded composite (33) has an opening (331) on the end face away from the battery cell module (2) along its length direction.

5. The battery pack according to claim 3, characterized in that, The insulating sleeve (32) is pasted and fixed in the inner cavity of the pultruded composite (33).

6. The battery pack according to claim 1, characterized in that, The cell module (2) is bonded to the battery frame (1) using structural adhesive (6).

7. The battery pack according to claim 1, characterized in that, The high-voltage connection bar (3) is connected to the fixed bracket (5) by bolts (7).

8. The battery pack according to claim 1, characterized in that, The fixing bracket (5) is welded to the battery frame (1).

9. The battery pack according to claim 1, characterized in that, The insulating structure (4) is bonded and fixed to the upper end face of the battery cell module (2).

10. A vehicle, characterized in that, Includes the battery pack as described in any one of claims 1-9.

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