Battery of electric motorcycle

Abstract

The utility model relates to a battery of an electric motorcycle. The battery comprises a battery cell module, the shell is provided with a containing cavity penetrating through the shell in the first direction, the containing cavity is used for containing the battery cell module, and the shell is further provided with a liquid cooling loop surrounding the containing cavity; the base is fixed at one end of the shell along the first direction and is used for supporting the battery cell module; the end cover is fixed to the other end, in the first direction, of the shell, and the battery cell module is sealed in the containing cavity of the shell through the end cover and the base together; the liquid inlet part is communicated with the liquid cooling loop and is used for inputting the cooling liquid into the liquid cooling loop; and the liquid outlet piece is communicated with the liquid cooling loop and is used for outputting the cooling liquid of the liquid cooling loop. According to the utility model, the heat dissipation efficiency is improved, the heat dissipation cost is reduced, and the maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to an electric motorcycle battery. Background Art

[0002] With the rapid development of the new energy industry, lithium batteries have become the main focus of replacing lead-acid batteries or gasoline engines. Lithium batteries are becoming more and more popular among consumers due to their significant advantages such as long cycle life, stable power output, no environmental pollution, no manual maintenance, and fast charging. In the electric motorcycle industry, especially in racing off-road scenarios, with the upgrading of consumer experience, the demand for high-rate discharge of lithium batteries has grown rapidly, and the heat dissipation design of lithium batteries has become an important basis for measuring battery performance.

[0003] At present, conventional electric motorcycle batteries generally use plastic shells, and the internal battery cells transfer the heat of the battery cells to the shell through natural heat dissipation or by filling the battery with thermal conductive structural glue, and use the shell to dissipate heat. However, the thermal conductivity of the plastic shell is low, and it is impossible to quickly exchange the heat inside the battery with the outside, and the natural heat dissipation efficiency is low. The cost of thermal conductive structural glue is high, and the battery using this heat dissipation method cannot be reworked and repaired. Once the battery cell is abnormal, the entire battery can only be replaced. Utility Model Content

[0004] Based on this, the utility model provides an electric motorcycle battery, comprising:

[0005] Battery cell module;

[0006] A housing having a receiving cavity penetrating the housing along a first direction, the receiving cavity being used to receive the battery cell module, and the housing also having a liquid cooling circuit surrounding the receiving cavity;

[0007] A base, fixed to one end of the housing along the first direction, for supporting the battery module;

[0008] An end cover is fixed to the other end of the housing along the first direction, and the end cover and the base together seal the battery module in the receiving cavity of the housing;

[0009] a liquid inlet component connected to the liquid cooling circuit and used for inputting cooling liquid into the liquid cooling circuit; and

[0010] The liquid outlet is connected to the liquid cooling circuit and is used to output the cooling liquid of the liquid cooling circuit.

[0011] Furthermore, the outer shell includes a first blocking body, a shell and a second blocking body fixed in sequence along the first direction, the shell is provided with a plurality of liquid cooling channels which penetrate the shell along the first direction and surround the accommodating cavity at even intervals, the first blocking body is provided with a first guide groove connected to the liquid cooling channel at one end facing the shell, the second blocking body is provided with a second guide groove connected to the liquid cooling channel at one end facing the shell, the first guide groove and the second guide groove are connected to all the liquid cooling channels together to form the liquid cooling circuit.

[0012] Furthermore, the first sealing body is provided with a plurality of the first guide grooves which are evenly spaced and surround the receiving cavity, and each of the first guide grooves is connected to at least two of the liquid cooling channels; the second sealing body is provided with a plurality of the second guide grooves which are evenly spaced and surround the receiving cavity, and each of the second guide grooves is connected to at least two of the liquid cooling channels.

[0013] Further, a projection of the first guide groove along the first direction and a projection of the second guide groove along the first direction do not overlap or partially overlap.

[0014] Furthermore, the electric motorcycle battery also includes a first seal and a second seal, wherein the first seal is arranged between the end cover and the shell, and the second seal is arranged between the base and the shell.

[0015] Further, the liquid inlet component includes a first liquid inlet connection portion and a second liquid inlet connection portion connected to the cooling liquid supply pipeline, one end of the first liquid inlet connection portion is fixed to the outer shell, and the other end passes through the end cover and is detachably connected to the second liquid inlet connection portion; the liquid outlet component includes a first liquid outlet connection portion and a second liquid outlet connection portion connected to the cooling liquid output pipeline, one end of the first liquid outlet connection portion is fixed to the outer shell, and the other end passes through the end cover and is detachably connected to the second liquid outlet connection portion.

[0016] Furthermore, the battery cell module includes a support base and a plurality of battery cells fixed in the support base.

[0017] Furthermore, the shell is made of metal.

[0018] Furthermore, the base and / or the end cover are made of plastic.

[0019] Furthermore, the end cover includes a cover body and a handle fixed on the cover body.

[0020] Compared with the prior art, the beneficial features of the utility model are: the electric motorcycle battery, the shell has a receiving cavity that penetrates the shell along a first direction, the receiving cavity is used to receive the battery cell module, the end cover and the base together seal the battery cell module in the receiving cavity of the shell, the shell also has a liquid cooling circuit surrounding the receiving cavity, the cooling liquid flows through the periphery of the battery cell module through the liquid cooling circuit, and provides an exchange carrier for rapid heat dissipation of the battery cell module, which not only improves the heat dissipation efficiency, but also reduces the heat dissipation cost and facilitates maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an electric motorcycle battery according to an embodiment of the utility model;

[0022] Figure 2 for Figure 1 The schematic diagram of the explosion structure of the electric motorcycle battery shown;

[0023] Figure 3 for Figure 2 The schematic diagram of the housing structure of the electric motorcycle battery shown;

[0024] Figure 4 for Figure 2 The schematic structural diagram of the first sealing body in the electric motorcycle battery from another perspective is shown;

[0025] Figure 5 for Figure 2 The schematic diagram of the structure of the second blocking body in the electric motorcycle battery shown;

[0026] Figure 6 for Figure 1 A schematic diagram of the front view of the electric motorcycle battery shown;

[0027] Figure 7 for Figure 6 Left view of

[0028] Figure 8 for Figure 6 Bottom view of

[0029] Fig. 9 for Figure 6 A top view of

[0030] Fig.10 for Fig. 9 AA section view;

[0031] Among them: 1-battery cell module (101-support base, 102-battery cell), 2-housing (201-receiving chamber, 202-first blocking body (2021-first guide groove), 203-shell (2031-liquid cooling channel), 204-second blocking body (2041-second guide groove)), 3-base, 4-end cover (401-cover body, 402-handle), 5-liquid inlet (501-first liquid inlet connection part, 502-second liquid inlet connection part), 6-liquid outlet (601-first liquid outlet connection part, 602-second liquid outlet connection part), 7-first sealing part, 8-second sealing part, 9-protective plate. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] Please refer to Figures 1 to 10The electric motorcycle battery of the utility model embodiment includes a battery cell module 1, a shell 2, a base 3, an end cover 4, a liquid inlet 5 and a liquid outlet 6. The shell 2 has a receiving chamber 201 and a liquid cooling circuit. The receiving chamber 201 penetrates the shell 2 along a first direction, and the receiving chamber 201 is used to receive the battery cell module 1, and the liquid cooling circuit surrounds the receiving chamber 201. The base 3 is fixed to one end of the shell 2 along the first direction, and the base 3 is used to support the battery cell module 1. The end cover 4 is fixed to the other end of the shell 2 along the first direction, and the end cover 4 and the base 3 jointly seal the battery cell module 1 in the receiving chamber 201 of the shell 2. The liquid inlet 5 is connected to the liquid cooling circuit, and the liquid inlet 5 is used to input cooling liquid into the liquid cooling circuit. The liquid outlet 6 is connected to the liquid cooling circuit, and the liquid outlet 6 is used to output cooling liquid from the liquid cooling circuit. That is to say, the cooling liquid from the outside of the electric motorcycle battery passes through the liquid inlet 5 and the liquid cooling circuit in sequence, and then flows out to the outside of the electric motorcycle battery through the liquid outlet 6, thereby bringing the heat of the battery cell module 1 to the outside of the electric motorcycle battery to achieve heat dissipation.

[0036] In this embodiment, the housing 2 has a receiving cavity 201 that penetrates the housing 2 along a first direction. The receiving cavity 201 is used to receive the battery module 1. The end cover 4 and the base 3 together seal the battery module 1 in the receiving cavity 201 of the housing 2. The housing 2 also has a liquid cooling circuit surrounding the receiving cavity 201. The cooling liquid flows through the periphery of the battery module 1 through the liquid cooling circuit, providing the battery module 1 with an exchange carrier for rapid heat dissipation, which not only improves the heat dissipation efficiency but also reduces the heat dissipation cost. In addition, the cooling liquid does not directly contact the battery module 1, which can not only better protect the battery module 1, but also facilitate maintenance.

[0037] For some examples, see Figure 2 , the outer contour of the battery module 1 is roughly in the shape of a rectangular parallelepiped. Accordingly, in order to better dissipate the heat of the battery module 1, the shell 2 is roughly in the shape of a rectangular cylindrical structure, and the cross-sectional shape of the receiving cavity 201 is also rectangular, which can reduce the distance between the battery module 1 and the surface of the receiving cavity 201 as much as possible. The cooling liquid flowing through the liquid cooling circuit provides an exchange carrier for rapid heat dissipation around the battery module 1, which can fully exchange heat with the battery module 1, not only improving the heat dissipation efficiency, but also dissipating the heat more evenly.

[0038] In some preferred embodiments, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 as well as Fig.10 The housing 2 includes a first blocking body 202, a shell 203 and a second blocking body 204. The first blocking body 202, the shell 203 and the second blocking body 204 are sequentially arranged along the first direction and fixed as a whole. Figure 3 and Fig.10The shell 203 is provided with a plurality of liquid cooling channels 2031, each of which penetrates the shell 203 along the first direction, and all the liquid cooling channels 2031 are evenly spaced and surround the receiving cavity 201, so that the cooling liquid in the liquid cooling circuit can fully surround the receiving cavity 201, which can not only ensure the heat exchange effect, but also make the heat exchange more uniform. Please refer to Figure 4 and Fig.10 The first blocking body 202 is provided with a first guide groove 2021, which is provided at one end of the first blocking body 202 facing the shell 203, and the first guide groove 2021 is connected to the liquid cooling channel 2031. Figure 5 and Fig.10 A second guide groove 2041 is provided on the second blocking body 204. The second guide groove 2041 is provided at one end of the second blocking body 204 facing the shell 203, and the second guide groove 2041 is connected to the liquid cooling channel 2031. The first guide groove 2021 and the second guide groove 2041 are connected to all the liquid cooling channels 2031 to form a liquid cooling circuit.

[0039] In this embodiment, the housing 2 is a split structure, including a shell 203 and a first blocking body 202 and a second blocking body 204 respectively blocking the two ends of the first direction of the shell 203. The first blocking body 202, the shell 203 and the second blocking body 204 jointly limit the receiving chamber 201 and the liquid cooling circuit, which is more convenient for production and manufacturing. As an example, the first blocking body 202 can be welded and fixed to the shell 203, and the second blocking body 204 can also be welded and fixed to the shell 203. It can be understood that the first blocking body 202 and the second blocking body 204 can also be fixedly connected to the shell 203 in other ways, as long as the above-mentioned receiving chamber 201 and the liquid cooling circuit can be formed.

[0040] It should be noted that, in other embodiments, the housing 2 may also be an integrated structure, which will not be described in detail here.

[0041] In some more preferred embodiments, please refer to Figure 4 The first blocking body 202 is provided with a plurality of first guide grooves 2021, all of which are evenly spaced and surround the receiving chamber 201, and each first guide groove 2021 is connected to at least two liquid cooling channels 2031. Please refer to Figure 5 A plurality of second guide grooves 2041 are formed on the second blocking body 204 , and all the second guide grooves 2041 are evenly spaced and surround the receiving cavity 201 , and each second guide groove 2041 is connected to at least two liquid cooling channels 2031 .

[0042] In some more preferred embodiments, the projection of the first guide groove 2021 along the first direction and the projection of the second guide groove 2041 along the first direction do not overlap. Figure 4 , Figure 5 and Fig.10 , the projection of the first guide groove 2021 along the first direction and the projection of the second guide groove 2041 along the first direction only partially overlap.

[0043] In this embodiment, the projection of the first guide groove 2021 along the first direction and the projection of the second guide groove 2041 along the first direction do not overlap or partially overlap, so that the cooling liquid can flow more fully in the liquid cooling circuit, thereby improving the cooling effect.

[0044] In some preferred embodiments, please refer to Figure 2 and Fig.10 The electric motorcycle battery also includes a first seal 7 and a second seal 8 , wherein the first seal 7 is padded between the end cover 4 and the housing 2 , and the second seal 8 is padded between the base 3 and the housing 2 .

[0045] In this embodiment, the first sealing member 7 and the second sealing member 8 are respectively arranged between the end cover 4 and the outer shell 2, and between the base 3 and the outer shell 2, which can ensure that the electric motorcycle battery meets the dust and water resistance requirements, effectively protect the battery cell module 1 accommodated in the accommodating cavity 201, and improve the product quality of the electric motorcycle battery and the service life of the electric motorcycle battery.

[0046] As an example, the first sealing member 7 may be made of silicone material, and the second sealing member 8 may also be made of silicone material.

[0047] In some preferred embodiments, please refer to Figure 2 and Fig.10 The liquid inlet component 5 includes a first liquid inlet connection part 501 and a second liquid inlet connection part 502, one end of the first liquid inlet connection part 501 is fixed to the shell 2, the other end of the first liquid inlet connection part 501 passes through the end cover 4, and the other end of the first liquid inlet connection part 501 is detachably connected to one end of the second liquid inlet connection part 502, and the other end of the second liquid inlet connection part 502 is connected to the cooling liquid supply pipeline.

[0048] In some preferred embodiments, please refer to Figure 1 The liquid outlet part 6 includes a first liquid outlet connection part 601 and a second liquid outlet connection part 602, one end of the first liquid outlet connection part 601 is fixed to the shell 2, the other end of the first liquid outlet connection part 601 passes through the end cover 4, and the other end of the first liquid outlet connection part 601 is detachably connected to one end of the second liquid outlet connection part 602, and the other end of the second liquid outlet connection part 602 is connected to the cooling liquid output pipeline.

[0049] As an example, the second liquid inlet connection part 502 can be a quick plug fixed to the cooling liquid supply pipeline, the cooling liquid supply pipeline can be connected to the cooling liquid supply system for providing cooling liquid, and the first liquid inlet connection part 501 can be plugged and matched with the second liquid inlet connection part 502, which is convenient to use. The second liquid outlet connection part 602 can be a quick plug fixed to the cooling liquid output pipeline, the cooling liquid output pipeline can be connected to the cooling liquid supply system to realize the recycling of cooling liquid, or the cooling liquid output pipeline can be connected to the cooling liquid recovery system for recovering cooling liquid, and the first liquid outlet connection part 601 can be plugged and matched with the second liquid outlet connection part 602, which is convenient to use.

[0050] For some examples, see Figure 2 The first liquid inlet connection part 501 and the first liquid outlet connection part 601 have the same structure, and their functions can be interchanged. The first liquid inlet connection part 501 can be connected to the second liquid outlet connection part 602, and the first liquid inlet connection part 501 can be used as a liquid outlet. The first liquid outlet connection part 601 can also be connected to the second liquid inlet connection part 502, and the first liquid outlet connection part 601 can be used as a liquid inlet. It is more flexible to use, and the liquid inlet position and the liquid outlet position can be selected as needed.

[0051] It is understandable that in other embodiments, the liquid inlet member 5 may also be other structures, or the first liquid inlet connection portion 501 and the second liquid inlet connection portion 502 may also be connected in other ways, which are not limited here. Similarly, in other embodiments, the liquid outlet member 6 may also be other structures, or the first liquid outlet connection portion 601 and the second liquid outlet connection portion 602 may also be connected in other ways, which are not limited here.

[0052] In some preferred embodiments, please refer to Figure 2 The battery cell module 1 includes a support base 101 and a plurality of battery cells 102. All battery cells 102 are fixed in the support base 101. The number of battery cells 102 can be set as needed. The battery cell module 1 is a prior art and is not limited here.

[0053] As an example, the electric motorcycle battery may further include a protection plate 9, which may be accommodated in the accommodation cavity 201 or the end cover 4. The protection plate 9 may be electrically connected to the battery cell 102 to monitor the state of the battery cell 102, thereby extending the service life of the battery cell 102. In extreme cases, the protection plate 9 may also activate a protection function for the battery cell 102. For example, the protection plate 9 may be electrically connected to the battery cell 102 via a voltage acquisition line, a temperature acquisition line, and positive and negative cables. The protection plate 9 is a prior art and is not limited here.

[0054] In some preferred embodiments, the housing 2 is made of metal.

[0055] In some more preferred embodiments, the first blocking body 202, the shell 203 and the second blocking body 204 can be welded and fixed to form the shell 2. It is understandable that in other embodiments, the first blocking body 202, the shell 203 and the second blocking body 204 can also be fixedly connected in other ways to form the shell 2, which is not limited here.

[0056] As an optional implementation, the housing 2 may be made of aluminum alloy, which is not only light in weight and high in strength, but also has good heat dissipation effect.

[0057] In some examples, the first blocking body 202, the shell 203 and the second blocking body 204 are all made of aluminum alloy. The first liquid inlet connection part 501 and the first liquid outlet connection part 601 are also made of aluminum alloy. The first blocking body 202 and the second blocking body 204 are respectively welded and fixed to the shell 203 to limit the accommodating cavity 201 and the liquid cooling circuit. The first liquid inlet connection part 501 and the first liquid outlet connection part 601 are respectively welded and fixed to the first blocking body 202, and the liquid inlet part 5 and the liquid outlet part 6 are respectively connected to the liquid cooling circuit, so that the cooling liquid in the cooling liquid supply system can flow through the liquid inlet part 5 and the liquid cooling circuit in turn, and then flow out from the liquid outlet part 6, thereby bringing the heat of the battery module 1 to the outside of the battery to achieve heat dissipation. It can be understood that the first liquid inlet connection part 501 and the first liquid outlet connection part 601 can also be fixed to other places of the shell 2, as long as the battery module 1 can be cooled.

[0058] As an example, the first blocking body 202 and the second blocking body 204 can be made of aluminum alloy material through CNC (Computer Numerical Control) processing or die-casting. The shell 203 can be formed into a rectangular cylindrical structure through an extrusion process. It is understandable that in other embodiments, the first blocking body 202, the shell 203 and the second blocking body 204 can also be made in other ways, which are not limited here.

[0059] In some preferred embodiments, the base 3 and the end cap 4 can be made of plastic, which is lighter and more suitable for electric motorcycles. It is understandable that the base 3 and the end cap 4 can be made of the same material, or different materials. In other embodiments, the base 3 and the end cap 4 can also be made of other materials, which will not be described in detail here.

[0060] In some examples, the end cap 4 is fixed to the housing 2 by a threaded member, and the base 3 is fixed to the housing 2 by a threaded member, which is not only convenient for installation, but also convenient for disassembly and maintenance, and is easy to use. As an example, the threaded member can be a screw.

[0061] It is understandable that in other embodiments, the end cover 4 and the base 3 may also be fixed to the housing 2 in other ways, which are not limited here.

[0062] In some preferred embodiments, please refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 and Fig. 9 The end cover 4 includes a cover body 401 and a handle 402. The handle 402 is fixed on the cover body 401 to facilitate operations such as inserting and removing batteries and carrying batteries for users, and is easy to use.

[0063] As an example, the cooling liquid can be water or other liquids. Alternatively, the cooling liquid can also be replaced by other flowing cooling media, as long as the heat of the battery module 1 can be safely and reliably dissipated.

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An electric motorcycle battery, characterized in that: include: Battery cell module; A housing having a receiving cavity penetrating the housing along a first direction, the receiving cavity being used to receive the battery cell module, and the housing also having a liquid cooling circuit surrounding the receiving cavity; A base, fixed to one end of the housing along the first direction, for supporting the battery module; An end cover is fixed to the other end of the housing along the first direction, and the end cover and the base together seal the battery module in the receiving cavity of the housing; a liquid inlet component connected to the liquid cooling circuit and used for inputting cooling liquid into the liquid cooling circuit; and The liquid outlet is connected to the liquid cooling circuit and is used to output the cooling liquid of the liquid cooling circuit.

2. The electric motorcycle battery according to claim 1, characterized in that: The shell includes a first blocking body, a shell and a second blocking body fixed in sequence along the first direction. The shell is provided with a plurality of liquid cooling channels that penetrate the shell along the first direction and surround the accommodating cavity at uniform intervals. The first blocking body is provided with a first guide groove connected to the liquid cooling channel at one end facing the shell. The second blocking body is provided with a second guide groove connected to the liquid cooling channel at one end facing the shell. The first guide groove and the second guide groove are connected to all the liquid cooling channels together to form the liquid cooling circuit.

3. The electric motorcycle battery according to claim 2, characterized in that: The first sealing body is provided with a plurality of first guide grooves which are evenly spaced and surround the receiving cavity, and each of the first guide grooves is connected to at least two of the liquid cooling channels. The second sealing body is provided with a plurality of second guide grooves which are evenly spaced and surround the receiving cavity, and each of the second guide grooves is connected to at least two of the liquid cooling channels.

4. The electric motorcycle battery according to claim 2, characterized in that: A projection of the first guiding groove along the first direction and a projection of the second guiding groove along the first direction do not overlap or partially overlap.

5. The electric motorcycle battery according to claim 1, characterized in that: The electric motorcycle battery also includes a first seal and a second seal, wherein the first seal is arranged between the end cover and the shell, and the second seal is arranged between the base and the shell.

6. The electric motorcycle battery according to claim 1, characterized in that: The liquid inlet component includes a first liquid inlet connection part and a second liquid inlet connection part connected to the cooling liquid supply pipeline, one end of the first liquid inlet connection part is fixed to the shell, the other end passes through the end cover and is detachably connected to the second liquid inlet connection part; the liquid outlet component includes a first liquid outlet connection part and a second liquid outlet connection part connected to the cooling liquid output pipeline, one end of the first liquid outlet connection part is fixed to the shell, the other end passes through the end cover and is detachably connected to the second liquid outlet connection part.

7. The electric motorcycle battery according to claim 1, characterized in that: The battery cell module includes a support seat and a plurality of battery cells fixed in the support seat.

8. The electric motorcycle battery according to claim 1, characterized in that: The shell is made of metal.

9. The electric motorcycle battery according to claim 1, characterized in that: The base and / or the end cover are made of plastic.

10. The electric motorcycle battery according to claim 1, characterized in that: The end cover comprises a cover body and a handle fixed on the cover body.

Images