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TP48200A-HT19C4-1, TBC300A-TCA2 Outdoor Power System User Manual

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
TEC

TEC

The TEC unit consists of the TEC module (TEC04C) and TCUA control box. It controls temperatures for the battery compartment.

TEC Module (TEC04C)

Figure 3-13 shows a TEC04C.

Figure 3-13  TEC04C

(1) External circulation fan (2) External circulation heat sink (3) Semiconductor refrigeration chip
(4) Internal circulation heat sink (5) Internal circulation fan  

TCUA

TCUA controls the operating of the fans and refrigeration chip, monitors the TEC, and reports alarms if faults occur. Figure 3-14 shows a TCUA.

Figure 3-14  TCUA
(1) Power input port (2) External circulation fan port 1 (3) External circulation fan port 2
(4) Switch port (reserved) (5) Door status sensor port (6) Electronic label port (reserved)
(7) Indicator (8) Communications port 1 (9) Communications port 2
(10) Temperature signal port 1 (11) TEC air conditioner port (12) Internal circulation fan port 1
(13) Internal circulation fan port 2 (14) Temperature signal port 2  

TEC Working Principle

The TEC cools and heats air through internal and external circulation. Table 3-11 describes how the TEC works. Figure 3-15 shows the TEC airflow directions.

Table 3-11  TEC working principles

Function

Working Principle

Cooling

The TCUA control box controls the refrigeration chip in the TEC module to cool the internal circulating air. The internal circulation fan draws the air inside the battery compartment into the internal circulation heat sink. The internal circulation heat sink cools the air and then returns the cooled air to the battery compartment through the air exhaust vents. Meantime, the external circulation fan draws natural air into the external circulation heat sink to accelerate the airflow. The air absorbs the heat from the external circulation heat sink and returns to the external environment through the air exhaust vents on the external circulation heat sink. The heat exchange between the internal and external environment is implemented so far.

Heating

The TCUA control box controls the refrigeration chip in the TEC module to heat the internal circulating air. The internal circulation fan draws the air inside the battery compartment into the internal circulation heat sink. The internal circulation heat sink heats the air and then returns the heated air to the battery compartment through the air exhaust vents. Meantime, the external circulation fan operates according to control logic and draws natural air into the external circulation heat sink. The air gives out heat and returns to the external environment through the air exhaust vents on the external circulation heat sink.

Figure 3-15  TEC airflow directions
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Updated: 2019-03-05

Document ID: EDOC1000078969

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