Energy storage battery pack heater

Abstract

The utility model discloses an energy storage battery pack heater which comprises a liquid storage container, a water inlet pipe and a water outlet pipe arranged at the two ends of the liquid storage container, a plurality of embedded parts with one ends extending into the liquid storage container, and heating parts detachably arranged in the embedded parts. Cold liquid injected into the liquid storage container through the water inlet pipe is heated after being heated through the embedded part and flows out towards the water outlet pipe end. By means of the technical scheme, the problems that when cold liquid flows, internal flow resistance is caused, and leakage is likely to happen can be solved, a firm and stable heating environment is created, the leakage risk is reduced, and the material cost is further reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power batteries, and in particular to an energy storage battery pack heater. BACKGROUND

[0002] The thermal management industry is currently more applied in the power battery industry and the energy storage industry. In the field of power batteries, the thermal management of new energy vehicles grows rapidly. With the increasing penetration rate of new energy vehicles in the market and the upgrading of the performance of related products, the market space and value of the thermal management system in new energy are huge. Thermal management has multiple meanings for new energy vehicles. First, the range of new energy vehicles is one of the indicators that consumers pay close attention to. The thermal management system can effectively control the temperature of the battery, prevent the performance of the battery from being reduced due to overheating and overcooling, and improve the efficiency of the battery to extend the range of the vehicle. Second, the safety of the power battery can be enhanced. The power battery is the power source and an important component of the new energy vehicle. The thermal management system can effectively control the working temperature through the BMS system to prevent accidents such as fire caused by thermal runaway and ensure the safety of the vehicle and passengers. Moreover, with the development of the new energy vehicle industry, the relevant departments have higher requirements for the safety performance and quality of the vehicle, and relevant laws and regulations also require vehicle manufacturers to have corresponding thermal management capabilities to ensure the safety and quality of the vehicle.

[0003] At present, the thermal management scheme can be roughly divided into air cooling, liquid cooling, direct cooling and phase change material. Among them, liquid cooling can be divided into cold plate liquid cooling and immersion liquid cooling. The cold plate liquid cooling is an indirect cooling method, which contacts the cooling plate with the battery, exchanges heat between the coolant in the cooling plate and the battery, and takes away the heat through the cooling channel. The immersion liquid cooling is a heat exchange cooling method that immerses the battery module in an insulating cooling liquid. Liquid cooling has the advantages of high heat exchange efficiency and uniform heat, but the cost is relatively high. Among them, the water tank heating type energy storage battery pack heater generally uses a water tank type multi-channel heat exchanger, which uses a porous flat tube as a water channel and exchanges heat with the electrified equipment after being attached. However, the internal flow resistance of the cold liquid is large during the flow process, and leakage is prone to occur. Safety accidents are prone to occur between the attached electrified equipment. In addition, the turbulence generated by the water chambers on both sides of the water tank heater is prone to cause leakage risk. SUMMARY

[0004] In order to solve the technical problems existing in the prior art, the purpose of the present application is to provide an energy storage battery pack heater, which can solve the problems of internal flow resistance and easy leakage of cold liquid during flow. Not only a solid and stable heating environment is created, but also the risk of leakage is reduced, and the material cost is further reduced.

[0005] In order to solve the above-mentioned technical problems in the prior art, the technical scheme of the present application is as follows:

[0006] The energy storage battery pack heater comprises a liquid storage container, water inlet pipes and water outlet pipes arranged at both ends of the liquid storage container, a plurality of embedded parts with one end extending into the liquid storage container, and a detachable heating component arranged in the embedded parts. The cold liquid injected into the liquid storage container is heated by the embedded parts and flows out of the water outlet pipe end.

[0007] Preferably, the liquid storage container comprises a cylindrical shell, sealing flanges arranged at both ends of the shell, and the water inlet pipe and the water outlet pipe are arranged between the sealing flanges at both ends.

[0008] Preferably, one end of the water inlet pipe extends into the interior of the liquid storage container, and the extending end of the water inlet pipe is provided with a first water outlet hole and a second water outlet hole on the side wall and the bottom, respectively.

[0009] Preferably, the first water outlet hole is annularly distributed in several turns along the axial direction of the water inlet pipe.

[0010] Preferably, the diameters of the first water outlet holes on the side wall of the water inlet pipe in the several turns gradually decrease from outside to inside.

[0011] Preferably, the embedded parts are tubular structures with one end blocked, and a plurality of the embedded parts are uniformly arranged in a ring around the liquid storage container with the water inlet pipe and the water outlet pipe as the center.

[0012] Preferably, one side of the shell is provided with an outwardly protruding mounting strip.

[0013] Compared with the prior art, the beneficial effects of the present application are as follows:

[0014] The present application can effectively solve the problem of large internal flow resistance of the existing water tank type channel heat exchanger when the cold liquid flows, and the whole structure is simple, the sealing index is difficult to achieve, thereby greatly reducing the risk of easy leakage, and no longer needs to be operated with electrified equipment, and the safety is higher.

[0015] When the fluid is moving, it will generate forces in multiple directions when encountering resistance in front, some of which will be completely opposite to the forward direction. After the convergence of multiple forces, turbulence will occur. After improvement, the turbulence phenomenon generated by the water chambers on both sides of the heater will no longer occur, the risk of leakage will not easily occur again, not only a solid and stable heating environment is created, but also the risk of leakage is reduced, and the material cost is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the combined structure of the present application;

[0017] Figure 2The schematic diagram of the overall structure without the heating component in the application;

[0018] Figure 3 The schematic diagram of the connection structure of the partial embedded part, the water outlet pipe and the sealing flange in the application;

[0019] Figure 4 The schematic diagram of the structure of the shell in the application;

[0020] In the figure: 1, the water outlet pipe; 2, the heating component; 3, the embedded part; 4, the liquid storage container; 41, the shell; 42, the sealing flange; 43, the positioning hole; 5, the water inlet pipe; 6, the first water outlet hole; 7, the second water outlet hole; 8, the mounting strip. DETAILED DESCRIPTION

[0021] In the following, the application will be further described in conjunction with the drawings and the specific embodiments, and it should be noted that the following described embodiments or technical features can be combined arbitrarily to form new embodiments without conflict.

[0022] In the description of the application, it should be understood that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0023] The terms "first", "second", and the like in the application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0024] As Figure 1 shown, an energy storage battery pack heater, comprising a liquid storage container 4, a water inlet pipe 5 and a water outlet pipe 1 arranged at both ends of the liquid storage container 4, a plurality of embedded parts 3 extending into the liquid storage container 4 at one end, a heating component 2 detachably arranged in the embedded part 3, the cold liquid injected into the liquid storage container 4 through the embedded part 3 after heating is heated and flows out of the water outlet pipe 1 end.

[0025] When the cold liquid is heated, it is first injected into the liquid storage container 4 through the water inlet pipe 5, and then the pre-embedded part 3 is heated by the heating component 2, and then the heated cold liquid is injected into the energy storage battery pack through the water outlet pipe 1 to exchange heat and then return to the water inlet pipe 5 for repeated heating, thereby effectively solving the problem of large internal flow resistance of the existing water tank type channel heat exchanger when the cold liquid flows, and the whole structure is simple, the sealing index is difficult to achieve, thereby greatly reducing the risk of easy leakage, and no longer needs to be operated with electrified equipment, and the safety is higher. In addition, when the fluid moves, it will generate various forces in various directions when encountering resistance in front, some of which will be completely opposite to the forward direction, and after the various forces converge, turbulence will occur, therefore, after the improvement of the structure, the turbulence phenomenon can be alleviated, and the obvious turbulence phenomenon generated by the water chamber on both sides of the heater will not occur again, the risk of leakage is not easy to occur again, not only a solid and stable heating environment is created, but also the risk of leakage is reduced, and the material cost is further reduced.

[0026] Further improvement is that, as shown in Figure 2 The liquid storage container 4 includes a cylindrical shell 41, a sealing flange 42 arranged at both ends of the shell 41, and the water inlet pipe 5 and the water outlet pipe 1 are arranged between the sealing flanges 42 at both ends.

[0027] Compared with the structure of other heat management modes, it is simpler to assemble, and the commonly used pre-embedded heating component 2 is commonly square. When the liquid flows, the existing structure is easy to generate turbulence phenomenon at the corner, and the contact area with the heater is insufficient, and energy is lost. In order to avoid the occurrence of the above problems, the shell 41 is improved into a cylindrical structure, and the internal components are also a circular pipe structure, that is, the inner wall of the liquid storage container 4 is circular, which not only increases the inner surface area, but also effectively reduces the turbulence phenomenon, can be completely contacted with the circular heating embedded pipe, reduces the heat loss, and further reduces the risk of leakage.

[0028] Further improvement is that, as shown in

[0029] The pipe in the cavity of the water inlet pipe 5 is perforated, so that the entering liquid is evenly distributed in the cavity. Since the water inlet is lost with the liquid, the water pressure is further reduced. From the second water outlet hole, the hole diameter is sequentially reduced. A second water outlet hole 7 needs to be punched at the end as a pressure relief hole, which can prevent backflow and hinder water flow.

[0030] Further improvement is that, as shown inFigure 3 As shown, the embedded part 3 is a tubular structure with one end blocked, and a plurality of embedded parts 3 are evenly arranged on the liquid storage container 4 with the water inlet pipe 5 and the water outlet pipe 1 as the axis; a plurality of positioning holes 43 are arranged on the sealing flange 42, and the two ends of the embedded part 3 are fixed through the positioning holes 43.

[0031] A plurality of pipelines are regularly arranged, and a heating component 2 is embedded in the pipeline to heat or cool the solution in the chamber. After the liquid passes through the heater, it enters the battery PACK module for heat exchange, and then flows back to the chamber for the next heating or cooling. It can completely contact with the circular heating embedded pipe, reduce heat loss, further reduce the risk of leakage, the whole device structure is simple, the heating pipeline is more reasonable, does not need too much mold cost, is more suitable for matching with various systems, and creates a solid and stable heating environment. Not only reduces the risk of leakage, but also further reduces the material cost.

[0032] Further improvement is made, as shown in the figure, Figure 4 As shown, one side of the shell 41 is provided with an outwardly protruding mounting strip 8.

[0033] Because the shell 41 is a circular structure, the fixing method is relatively single during installation, therefore, an outwardly protruding mounting strip 8 is formed on one side of the shell 41, which can be used as a clamping block or a nail surface during screw fixing, and has higher flexibility during installation and wider application range.

[0034] The energy storage battery pack heater needs to place a heating component 2, such as a PTC heating pipeline, in the embedded part 3 before use. When the battery needs to be heated, the heating system needs to enter the prepared heating solution through the water inlet, and stay in the chamber composed of the shell 41 and the sealing flanges 42 on both sides for heating. After being heated by the heating pipeline, the liquid flows out of the water outlet. After the liquid exchanges heat in the battery pack through the heat exchange pipeline, it flows into the water inlet again through the pipeline, and reciprocates to achieve the heat exchange effect of the battery system. The structure of the heater is simple, the heating pipeline is more reasonable, does not need too much mold cost, is more suitable for matching with various systems, and creates a solid and stable heating environment. Not only reduces the risk of leakage, but also further reduces the material cost.

[0035] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A heater for an energy storage battery pack, characterized in that: It includes a liquid storage container (4), an inlet pipe (5) and an outlet pipe (1) at both ends of the liquid storage container (4), a number of embedded parts (3) with one end extending into the liquid storage container (4), and a detachable heating component (2) installed in the embedded part (3). The cold liquid injected into the liquid storage container (4) through the inlet pipe (5) is heated by the embedded part (3) and flows out to the outlet pipe (1).

2. The energy storage battery pack heater according to claim 1, characterized in that: The liquid storage container (4) includes a cylindrical shell (41) and sealing flanges (42) at both ends of the shell (41). The water inlet pipe (5) and the water outlet pipe (1) are respectively located between the sealing flanges (42) at both ends.

3. A heater for an energy storage battery pack according to claim 1 or 2, characterized in that: One end of the water inlet pipe (5) extends into the interior of the liquid storage container (4), and the side wall and bottom of the inlet end of the water inlet pipe (5) are respectively provided with a first water outlet (6) and a second water outlet (7).

4. A heater for an energy storage battery pack according to claim 3, characterized in that: The first water outlet (6) is distributed in a ring shape along the axis of the water inlet pipe (5).

5. A heater for an energy storage battery pack according to claim 3, characterized in that: The diameter of the first water outlet hole (6) on the side wall of the water inlet pipe (5) decreases from the outside to the inside.

6. A heater for an energy storage battery pack according to claim 1, characterized in that: The embedded part (3) is a tubular structure with one end sealed. Several of the embedded parts (3) are evenly arranged around the liquid storage container (4) with the water inlet pipe (5) and the water outlet pipe (1) as the axis.

7. A heater for an energy storage battery pack according to claim 2, characterized in that: The sealing flange (42) is provided with several positioning holes (43), and the two ends of the embedded part (3) are fixed through the positioning holes (43).

8. A heater for an energy storage battery pack according to claim 2, characterized in that: The housing (41) has an outwardly protruding mounting strip (8) on one side.

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