CN211507703U

CN211507703U - Temperature regulating system inside battery pack and temperature-equalizing battery pack

Info

Publication number: CN211507703U
Application number: CN201922380330.9U
Authority: CN
Inventors: 魏生其
Original assignee: Wuhao Technology Zhejiang Co ltd
Current assignee: Wuhao Technology Zhejiang Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-15
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to a battery field specifically discloses an inside temperature regulating system of group battery and samming group battery. The temperature regulating system in the battery pack comprises a plurality of hot rows arranged side by side, each hot row comprises a support plate, a plurality of accommodating grooves penetrating through the surface of the support plate along the length direction are respectively arranged on two sides of the support plate, the accommodating grooves on two side surfaces of the same support plate are alternately distributed in the width direction, the accommodating grooves on two adjacent support plates are in one-to-one correspondence, and the opening directions of the corresponding accommodating grooves are opposite; and each accommodating groove is internally provided with a main heat transfer pipe, the corresponding main heat transfer pipes on every two adjacent heat rows are communicated through a transition heat transfer pipe to form a temperature equalizing unit, and each temperature equalizing unit is filled with superconducting heat transfer materials. The internal temperature regulating system of the battery pack balances the temperature among all the battery units in the battery pack and reduces the overall working performance reduction or potential safety hazard of the battery pack caused by overhigh local temperature.

Description

Temperature regulating system inside battery pack and temperature-equalizing battery pack

Technical Field

The utility model relates to a battery field, concretely relates to inside temperature regulating system of group battery and samming group battery.

Background

With the increasing importance of environmental protection all over the world, the new energy field has been rapidly developed, and the most prominent is the use of electric energy, such as electric vehicles. The performance of the battery is a key factor limiting the wide spread of electric energy, wherein the problem of battery heating is an important factor limiting the performance of the battery, and the safety of the battery operation is influenced.

In order to ensure the voltage, current, capacity and other key performance parameters of the battery, a plurality of groups of battery units are usually arranged in the battery in a battery pack mode, when the battery pack works, due to the difference of heat dissipation performance among the battery units, large temperature difference exists among different battery units, and when the temperature of a certain battery unit is higher than a approved temperature, the working performance of the whole battery pack is greatly influenced, and even safety risk exists.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an inside temperature regulating system of group battery and samming group battery, the temperature between the inside each battery cell of balanced group battery reduces the whole working property decline of group battery or the potential safety hazard that leads to because of local high temperature.

In order to solve the technical problem, the utility model provides a technical scheme as follows: a temperature regulating system in a battery pack comprises a plurality of hot rows arranged side by side, wherein each hot row comprises a supporting plate, a plurality of accommodating grooves penetrating through the surface of the supporting plate along the length direction are respectively arranged on two sides of the supporting plate, the accommodating grooves on two side surfaces of the same supporting plate are alternately distributed in the width direction, the accommodating grooves on two adjacent supporting plates are in one-to-one correspondence, and the opening directions of the corresponding accommodating grooves are opposite; and each accommodating groove is internally provided with a main heat transfer pipe, the corresponding main heat transfer pipes on every two adjacent heat rows are communicated through a transition heat transfer pipe to form a temperature equalizing unit, and each temperature equalizing unit is filled with superconducting heat transfer materials.

When the temperature of some battery units in the group battery is too high, the corresponding main heat transfer pipe absorbs heat and rapidly transfers the heat to other battery units through the superconductive heat transfer material, balances the temperature difference between each battery unit in the group battery, and avoids the whole working performance reduction or potential safety hazard of the group battery caused by local too high temperature. The arrangement of the supporting plate plays a role in supporting and protecting the main heat transfer pipe, and meanwhile, the relative position among all the temperature equalizing units can be kept stable, so that the optimal heat transfer effect is realized. Because the space between two adjacent battery units is limited, the opening directions of the accommodating grooves on the supporting plate are alternately arranged, and the main heat transfer pipes corresponding to the two adjacent battery units can be respectively arranged in the limited space. The transition heat transfer pipe is positioned at the end part of the battery unit and is used for communicating each main heat transfer pipe, exchanging heat with the battery unit from the end part and also radiating partial heat to the outside from the end part.

Preferably, the depth of the accommodating groove is not greater than the diameter of the main heat transfer pipe, so that the heat transfer efficiency between the heat transfer pipe and the battery unit is prevented from being influenced as much as possible while the support protection of the main heat transfer pipe is ensured.

Preferably, the main heat transfer pipe is clamped with the support plate, so that the assembly difficulty is reduced.

Preferably, two transition heat transfer pipes connected with the same main heat transfer pipe are positioned at different ends of the main heat transfer pipe; the transition heat transfer pipes between two adjacent heat rows are positioned at the same end of the corresponding heat row. The transition heat transfer pipes are arranged in a centralized mode, production and assembly are facilitated, meanwhile, each temperature equalizing unit can be manufactured through a single branch pipe by adopting a pipe bending operation, production cost is low, and sealing performance is reliable.

Preferably, the heat exchanger further comprises a reinforcing plate corresponding to the transition heat transfer pipe, and the reinforcing plate and the support plate are arranged separately; the reinforcing plate is provided with slots corresponding to the transition heat transfer pipes one by one, and the slots corresponding to two adjacent transition heat transfer pipes are positioned on different side surfaces of the reinforcing plate; the opening directions of the corresponding slots on the two adjacent reinforcing plates are the same. The reinforcing plate supports the transition heat transfer pipe fixedly, and the risk of damage to the transition heat transfer pipe in the use process is reduced. Part of the slot openings on the reinforcing plate face the direction of the battery unit and are used for carrying out heat exchange with the battery unit, and the other part of the slot openings are far away from the direction of the battery unit and are used for emitting heat to the outside.

A temperature-equalizing battery pack comprises a shell and a cover plate, wherein a plurality of battery units are distributed in the shell, and a heat dissipation space is reserved between every two adjacent battery units; the battery pack internal temperature regulating system is characterized by further comprising a heat bar and a heat dissipation space, wherein the heat bar corresponds to the heat dissipation space one by one, and the heat bar is inserted into the corresponding heat dissipation space.

The internal temperature regulating system has small change to the original structure of the battery pack, can be obtained by simply modifying the process and spare parts of the existing battery production, has the basis of large-scale popularization, and has good feeding benefit.

Preferably, the heat row is connected with the inner wall of the cover plate, and the whole temperature regulating system is connected with the cover plate, so that the structural stability and the dismounting efficiency are improved.

Preferably, the outer end surface of the cover plate is distributed with radiating fins, and two ends of each radiating fin are respectively provided with a protective plate. Because the end parts of the radiating fins are sharp, the arrangement of the protective plate can reduce the exposure of the sharp parts and improve the use safety.

Drawings

Fig. 1 is a schematic structural diagram of a temperature regulating system inside a battery pack according to the embodiment;

FIG. 2 is a schematic view of a partial structure of a connection between a heat sink and a transition heat transfer pipe in a temperature regulating system inside a battery pack according to the present embodiment;

fig. 3 is a schematic structural diagram of a support plate in the internal temperature adjustment system of the battery pack according to the embodiment;

FIG. 4 is a partial schematic view illustrating the connection between a transition heat transfer pipe and a reinforcing plate in the temperature regulating system inside the battery pack according to the present embodiment;

fig. 5 is a schematic structural diagram of the temperature-equalizing battery pack of the present embodiment;

FIG. 6 is an exploded view of the temperature-equalizing battery pack of the present embodiment;

fig. 7 is a schematic structural view of a medium temperature adjusting system and a battery pack installation state of the temperature equalizing battery pack of the present embodiment;

fig. 8 is a schematic view illustrating a connection between a middle temperature adjusting system and a cover plate of the temperature equalizing battery pack of the present embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

As shown in fig. 1 to 3, a temperature adjustment system inside a battery pack includes a plurality of thermal banks 1 arranged side by side, each of the thermal banks 1 includes a supporting plate 11, a plurality of accommodating grooves 13 penetrating through a surface of the supporting plate 11 along a length direction are respectively disposed on two sides of the supporting plate 11, the accommodating grooves 13 on two sides of the same supporting plate 11 are alternately distributed in a width direction, the accommodating grooves 13 on two adjacent supporting plates 11 are in one-to-one correspondence, and openings of the corresponding accommodating grooves 13 are opposite in direction.

As shown in fig. 1 to fig. 3, a main heat transfer pipe 12 is clamped in each of the accommodating grooves 13, and the depth of each accommodating groove 13 is not greater than the diameter of the main heat transfer pipe 12. The corresponding main heat transfer pipes 12 on every two adjacent heat rows 1 are communicated through transition heat transfer pipes 21 to form temperature equalizing units, and superconducting heat transfer materials are filled in each temperature equalizing unit.

As shown in fig. 1 to 3, two transition heat transfer pipes 21 connected to the same main heat transfer pipe 12 are located at different ends of the main heat transfer pipe 12; the transition heat transfer tubes 21 between two adjacent heat rows 1 are located at the same end of the corresponding heat row 1. The transition heat transfer pipes 21 are arranged in a centralized mode, production and assembly are facilitated, meanwhile, each temperature equalizing unit can be manufactured through a single branch pipe by adopting a pipe bending operation, production cost is low, and sealing performance is reliable.

Further, as shown in fig. 1 and 4, the heat exchanger further comprises a reinforcing plate 2 corresponding to the transition heat transfer pipe 21, wherein the reinforcing plate 2 is arranged separately from the support plate 11; the reinforcing plate 2 is provided with slots corresponding to the transition heat transfer tubes 21 one by one, and the slots corresponding to two adjacent transition heat transfer tubes 21 are positioned on different side surfaces of the reinforcing plate 2; the opening directions of the corresponding slots on the two adjacent reinforcing plates 2 are the same. The reinforcing plate 2 supports and fixes the transition heat transfer pipe 21, and the risk of damage to the transition heat transfer pipe 21 in the use process is reduced. Part of the insertion grooves on the reinforcing plate 2 are opened toward the battery unit 4 for heat exchange with the battery unit 4, and the other part of the insertion grooves are opened away from the battery unit 4 for heat radiation to the outside.

When the temperature of some battery units 4 in the battery pack is too high, the corresponding main heat transfer pipes 12 absorb heat and rapidly transfer the heat to other battery units 4 through the superconducting heat transfer material, so that the temperature difference between the battery units 4 in the battery pack is balanced, and the reduction of the overall working performance of the battery pack or potential safety hazards caused by local overhigh temperature is avoided. The arrangement of the supporting plate 11 plays a role in supporting and protecting the main heat transfer pipe 12, and simultaneously, the relative positions of the temperature equalizing units can be kept stable, so that the optimal heat transfer effect is realized. Because the space between two adjacent battery units 4 is limited, the opening directions of the accommodating grooves 13 on the supporting plate 11 are alternately arranged, so that the main heat transfer pipes 12 corresponding to two adjacent groups of battery units 4 can be respectively arranged in the limited space. The transition heat transfer pipe 21 is located at an end portion of the battery cell 4, and is used to communicate with each main heat transfer pipe 12, and may exchange heat with the battery cell 4 from the end portion or may radiate a part of the heat from the end portion to the outside.

As shown in fig. 5 to 7, the temperature-equalizing battery pack includes a housing 3 and a cover plate 5, wherein a plurality of battery units 4 are distributed in the housing 3, and a heat dissipation space 41 is left between two adjacent battery units 4. The battery pack internal temperature regulating system further comprises the battery pack internal temperature regulating system, wherein the heat bars 1 correspond to the heat dissipation spaces 41 one by one, and the heat bars 1 are inserted into the corresponding heat dissipation spaces 41. As shown in figure 8, the heat row 1 is connected with the inner wall of the cover plate 5, and the whole temperature regulating system is connected with the cover plate 5, so that the structural stability and the dismounting efficiency are improved.

As shown in fig. 5 and 6, heat dissipation fins 52 are distributed on the outer end surface of the cover plate 5, and protection plates 51 are respectively disposed at two ends of the heat dissipation fins 52. Because the end of the heat dissipation fin 52 is sharp, the protection plate 51 can reduce the exposure of the sharp part, and the use safety is improved.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides an inside temperature regulating system of group battery which characterized in that: the hot rows are arranged side by side, each hot row comprises a support plate, a plurality of accommodating grooves penetrating through the surface of the support plate along the length direction are respectively arranged on two sides of the support plate, the accommodating grooves on two side surfaces of the same support plate are alternately distributed in the width direction, the accommodating grooves on two adjacent support plates are in one-to-one correspondence, and the opening directions of the corresponding accommodating grooves are opposite;

and each accommodating groove is internally provided with a main heat transfer pipe, the corresponding main heat transfer pipes on every two adjacent heat rows are communicated through a transition heat transfer pipe to form a temperature equalizing unit, and each temperature equalizing unit is filled with superconducting heat transfer materials.

2. The battery pack internal temperature regulation system according to claim 1, characterized in that: the depth of the containing groove is not more than the diameter of the main heat transfer pipe.

3. The battery pack internal temperature regulation system according to claim 1, characterized in that: the main heat transfer pipe is clamped with the support plate.

4. The battery pack internal temperature regulation system according to claim 1, characterized in that: two transition heat transfer pipes connected with the same main heat transfer pipe are positioned at different ends of the main heat transfer pipe; the transition heat transfer pipes between two adjacent heat rows are positioned at the same end of the corresponding heat row.

5. The battery pack internal temperature conditioning system according to any one of claims 1 to 4, characterized in that: the heat exchanger also comprises a reinforcing plate corresponding to the transition heat transfer pipe, and the reinforcing plate and the supporting plate are arranged in a split manner; the reinforcing plate is provided with slots corresponding to the transition heat transfer pipes one by one, and the slots corresponding to two adjacent transition heat transfer pipes are positioned on different side surfaces of the reinforcing plate; the opening directions of the corresponding slots on the two adjacent reinforcing plates are the same.

6. The utility model provides a samming group battery, includes casing and apron, the casing in distribute and have a plurality of battery cell, its characterized in that: a heat dissipation space is reserved between every two adjacent battery units; the battery pack internal temperature regulating system according to any one of claims 1 to 5, wherein the heat bars are in one-to-one correspondence with the heat dissipation spaces, and the heat bars are inserted into the corresponding heat dissipation spaces.

7. The temperature equalization battery pack of claim 6, wherein: the heat row is connected with the inner wall of the cover plate.

8. The temperature-equalizing battery pack according to claim 6 or 7, wherein: radiating fins are distributed on the outer end face of the cover plate, and protective plates are respectively arranged at two ends of each radiating fin.