Electric motorcycle battery pack

Abstract

The utility model provides an electric motorcycle battery pack, including a heat dissipation shell and a battery module installed in the heat dissipation shell, the battery module including a BMS and a collection system, an aluminum wire, an upper bracket, a battery, a lower bracket and a heat pipe, the upper bracket is connected to the lower bracket, the battery is installed between the upper bracket and the lower bracket, all the positive electrodes of the battery are installed on the upper bracket, the heat pipe is inserted in the gap between adjacent battery cells, the heat pipe is thermally connected to the heat dissipation shell, the BMS and the collection system are provided with an aluminum wire welding process hole, one end of the aluminum wire is connected to the BMS and the collection system, the other end of the aluminum wire passes through the aluminum wire welding process hole and is connected to the positive electrode of the battery, and the battery corresponds to the aluminum wire one by one. The beneficial effect of the utility model is that the heat of the battery cell can be transferred to the heat dissipation shell through the heat pipe, the heat dissipation efficiency can be improved, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to a battery pack, in particular to a battery pack for an electric motorcycle. Background Art

[0002] As electric motorcycles become more common, the demand for cost, reliability, safety, and high-rate discharge becomes more and more urgent. Since the power density of small cylindrical cells is limited, large cylindrical cells are mostly used to meet the demand, which greatly compresses the limited space of the battery pack for active heat dissipation, and large cylindrical cells have relatively high requirements for failure pressure relief space. When the cells are frequently charged and discharged at high rates, a large amount of heat will be generated. The heat cannot be dissipated in time, causing the cells to fail and seriously reduce the life of the battery pack. In addition, it may cause thermal runaway of the cells, resulting in serious safety problems.

[0003] Therefore, how to improve the heat dissipation efficiency of the electric motorcycle battery pack is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In order to solve the problems in the prior art, the utility model provides an electric motorcycle battery pack.

[0005] The utility model provides an electric motorcycle battery pack, comprising a heat dissipation shell and a battery module installed in the heat dissipation shell, the battery module comprising a BMS and a collection system, an aluminum wire, an upper bracket, a battery, a lower bracket and a heat pipe, the upper bracket is connected to the lower bracket, the battery is installed between the upper bracket and the lower bracket, all positive electrodes of the battery are installed on the upper bracket, the heat pipe is passed through the gap between adjacent battery cells, the heat pipe is thermally connected to the heat dissipation shell, an aluminum wire welding process hole is provided on the BMS and the collection system, one end of the aluminum wire is connected to the BMS and the collection system, the other end of the aluminum wire passes through the aluminum wire welding process hole and is connected to the positive electrode of the battery, and the battery cell corresponds to the aluminum wire one by one.

[0006] As a further improvement of the utility model, the BMS and the acquisition system are provided with a chip resistor, the upper bracket is provided with a temperature acquisition through hole, and the chip resistor passes through the temperature acquisition through hole and is attached to the battery cell.

[0007] As a further improvement of the utility model, the space between adjacent battery cells and heat pipes is filled with thermal conductive glue.

[0008] As a further improvement of the utility model, the tail end of the heat pipe is not filled with glue, and the tail end of the battery core is not filled with glue.

[0009] As a further improvement of the utility model, a busbar is provided on the upper bracket.

[0010] As a further improvement of the utility model, the heat dissipation shell includes an aluminum barrel, an upper cover and a lower cover, the aluminum barrel is sealed and connected to the upper cover through an upper sealing ring, the aluminum barrel is sealed and connected to the lower cover through a lower sealing ring, the battery cell module is arranged between the aluminum barrels, a silicone pad is provided between the battery cell module and the lower cover, and the heat pipe is thermally connected to the aluminum barrel.

[0011] As a further improvement of the utility model, a ventilation valve is provided on the lower cover, and a discharge terminal is connected to the upper cover.

[0012] As a further improvement of the utility model, heat dissipation fins are provided on the front and back sides of the aluminum barrel.

[0013] As a further improvement of the present invention, the heat pipe is U-shaped.

[0014] As a further improvement of the present invention, the BMS and the collection system are bonded to the upper bracket.

[0015] The beneficial effect of the utility model is that: through the above scheme, the heat of the battery core can be transferred to the heat dissipation shell through the heat pipe, which can improve the heat dissipation efficiency and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments 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 solutions can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The utility model is an exploded schematic diagram of a battery pack for an electric motorcycle.

[0018] Figure 2 The utility model is an exploded schematic diagram of a battery cell module of an electric motorcycle battery pack.

[0019] Figure 3 The utility model is a schematic diagram of the installation of a BMS and a data collection system of a battery module of an electric motorcycle battery pack.

[0020] Figure 4 The utility model is a cross-sectional schematic diagram of a battery cell module of an electric motorcycle battery pack. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, 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 limiting the scope of protection of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figures 1 to 4 As shown, an electric motorcycle battery pack includes a heat dissipation shell and a battery cell module 1 installed in the heat dissipation shell.

[0026] The battery module 1 includes a BMS (battery management system) and a collection system 11 , an aluminum wire 12 , an upper bracket 14 , a battery cell 15 , a lower bracket 16 and a heat pipe 17 .

[0027] The upper bracket 14 is connected to the lower bracket 16 , and the battery cells 15 are installed between the upper bracket 14 and the lower bracket 16 . There are at least two battery cells 15 , and the battery cells 15 are installed in groups.

[0028] The positive electrodes of all the battery cells 15 are installed on the upper bracket 14, and the heat pipe 17 is arranged in the gap between adjacent battery cells 15. The heat pipe 17 is thermally connected to the heat dissipation shell, and the heat of the battery cell 15 is transferred to the heat dissipation shell through the heat pipe 17 for heat dissipation.

[0029] The BMS and collection system 11 is provided with an aluminum wire welding process hole 111, one end of the aluminum wire 12 is connected to the BMS and collection system 11, and the other end of the aluminum wire 12 passes through the aluminum wire welding process hole 111 and is connected to the positive electrode of the battery cell 15. The battery cell 15 corresponds to the aluminum wire 12 one by one. Each battery cell 15 is connected to the BMS and collection system 11 through the aluminum wire 12, so that the BMS can detect the voltage of each battery cell.

[0030] The BMS and acquisition system 11 is provided with a chip resistor, which is a thermistor used for temperature sensing. The upper bracket 14 is provided with a temperature acquisition through hole 141. The chip resistor passes through the temperature acquisition through hole 141 and is attached to the battery cell 15. Temperature detection is performed through the attachment between the chip resistor and the battery cell 15.

[0031] The space between adjacent battery cells 15 and heat pipes 17 is filled with thermal conductive adhesive 18 .

[0032] The tail end of the heat pipe 17 is not filled with glue, and the tail end of the battery core 15 is not filled with glue.

[0033] The upper bracket 14 is provided with a busbar 13 .

[0034] The heat dissipation housing includes an aluminum barrel 5, an upper cover 2 and a lower cover 6. The aluminum barrel 5 is sealed and connected to the upper cover 2 through an upper sealing ring 3, and the aluminum barrel 5 is sealed and connected to the lower cover 6 through a lower sealing ring 8. The battery cell module 1 is arranged between the aluminum barrels 5. A silicone pad 7 is provided between the battery cell module 1 and the lower cover 6. The heat pipe 17 is thermally connected to the aluminum barrel 5.

[0035] The lower cover 6 is provided with a vent valve 9 , and the upper cover 2 is connected with a discharge terminal 4 .

[0036] The front and back sides of the aluminum barrel 5 are provided with heat dissipation fins.

[0037] The heat pipe 16 is U-shaped.

[0038] The BMS and collection system 11 are bonded to the upper bracket 14 by structural adhesive.

[0039] There are at least two battery cell modules 1 , and the battery cell modules 1 are filled with thermal conductive glue.

[0040] The utility model provides an electric motorcycle battery pack. The heat generated during the charging and discharging process of the battery core is transferred to the heat pipe 17 through the heat conductive glue. The heat pipe 17 quickly transfers the heat to the aluminum barrel 5. The aluminum barrel 5 then diffuses into the air through heat radiation, thereby achieving the purpose of reducing the temperature of the battery core. The utility model has a simple structure, is easy to implement, and has a low cost.

[0041] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An electric motorcycle battery pack, characterized in that: It includes a heat dissipation shell and a battery module installed in the heat dissipation shell, the battery module includes a BMS and a collection system, aluminum wire, an upper bracket, a battery, a lower bracket and a heat pipe, the upper bracket is connected to the lower bracket, the battery is installed between the upper bracket and the lower bracket, all the positive electrodes of the battery cells are installed on the upper bracket, the heat pipe is passed through the gap between adjacent battery cells, the heat pipe is thermally connected to the heat dissipation shell, the BMS and the collection system are provided with an aluminum wire welding process hole, one end of the aluminum wire is connected to the BMS and the collection system, the other end of the aluminum wire passes through the aluminum wire welding process hole and is connected to the positive electrode of the battery cell, and the battery cell corresponds to the aluminum wire one by one.

2. The electric motorcycle battery pack according to claim 1, characterized in that: The BMS and the acquisition system are provided with a chip resistor, the upper bracket is provided with a temperature acquisition through hole, and the chip resistor passes through the temperature acquisition through hole and is attached to the battery cell.

3. The electric motorcycle battery pack according to claim 1, characterized in that: Adjacent battery cells and heat pipes are filled with thermal conductive glue.

4. The electric motorcycle battery pack according to claim 3, characterized in that: The tail end of the heat pipe is not filled with glue, and the tail end of the battery core is not filled with glue.

5. The electric motorcycle battery pack according to claim 1, characterized in that: A busbar is arranged on the upper bracket.

6. The electric motorcycle battery pack according to claim 1, characterized in that: The heat dissipation housing comprises an aluminum barrel, an upper cover and a lower cover. The aluminum barrel is sealed and connected to the upper cover via an upper sealing ring, and the aluminum barrel is sealed and connected to the lower cover via a lower sealing ring. The battery cell module is arranged between the aluminum barrels, a silicone pad is provided between the battery cell module and the lower cover, and the heat pipe is thermally connected to the aluminum barrel.

7. The electric motorcycle battery pack according to claim 6, characterized in that: The lower cover is provided with a vent valve, and the upper cover is connected with a discharge terminal.

8. The electric motorcycle battery pack according to claim 6, characterized in that: The front and back sides of the aluminum barrel are provided with heat dissipation fins.

9. The electric motorcycle battery pack according to claim 1, characterized in that: The heat pipe is U-shaped.

10. The electric motorcycle battery pack according to claim 1, characterized in that: The BMS and the collection system are bonded to the upper bracket.

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